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audk/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
Chen, Lin Z 94f905b3bf MdeModulePkg/HiiDatabase: Fix Setup numeric default value incorrect issue 
When default/manufacturing flag get removed from numeric varid, it can't
get default value from StructurePcd in 'UpdateDefaultSettingInFormPackage'
function since there is no EFI_IFR_DEFAULT_OP opcode in IFR file. Add a
chance to get numeric default value from StructurePcd in the case that
numeric minimum value will be used as default value.

Signed-off-by: Chen Lin Z <lin.z.chen@intel.com>
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2022-04-08 02:08:35 +00:00

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/** @file
Implementation of interfaces function for EFI_HII_CONFIG_ROUTING_PROTOCOL.
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "HiiDatabase.h"
extern HII_DATABASE_PRIVATE_DATA mPrivate;
/**
Calculate the number of Unicode characters of the incoming Configuration string,
not including NULL terminator.
This is a internal function.
@param String String in <MultiConfigRequest> or
<MultiConfigResp> format.
@return The number of Unicode characters.
**/
UINTN
CalculateConfigStringLen (
IN EFI_STRING String
)
{
EFI_STRING TmpPtr;
//
// "GUID=" should be the first element of incoming string.
//
ASSERT (String != NULL);
ASSERT (StrnCmp (String, L"GUID=", StrLen (L"GUID=")) == 0);
//
// The beginning of next <ConfigRequest>/<ConfigResp> should be "&GUID=".
// Will meet '\0' if there is only one <ConfigRequest>/<ConfigResp>.
//
TmpPtr = StrStr (String, L"&GUID=");
if (TmpPtr == NULL) {
return StrLen (String);
}
return (TmpPtr - String);
}
/**
Convert the hex UNICODE %02x encoding of a UEFI device path to binary
from <PathHdr> of <ConfigHdr>.
This is a internal function.
@param String UEFI configuration string
@param DevicePathData Binary of a UEFI device path.
@retval EFI_NOT_FOUND The device path is not invalid.
@retval EFI_INVALID_PARAMETER Any incoming parameter is invalid.
@retval EFI_OUT_OF_RESOURCES Lake of resources to store necessary structures.
@retval EFI_SUCCESS The device path is retrieved and translated to
binary format.
**/
EFI_STATUS
GetDevicePath (
IN EFI_STRING String,
OUT UINT8 **DevicePathData
)
{
UINTN Length;
EFI_STRING PathHdr;
UINT8 *DevicePathBuffer;
CHAR16 TemStr[2];
UINTN Index;
UINT8 DigitUint8;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
if ((String == NULL) || (DevicePathData == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Find the 'PATH=' of <PathHdr> and skip it.
//
for ( ; (*String != 0 && StrnCmp (String, L"PATH=", StrLen (L"PATH=")) != 0); String++) {
}
if (*String == 0) {
return EFI_INVALID_PARAMETER;
}
//
// Check whether path data does exist.
//
String += StrLen (L"PATH=");
if (*String == 0) {
return EFI_INVALID_PARAMETER;
}
PathHdr = String;
//
// The content between 'PATH=' of <ConfigHdr> and '&' of next element
// or '\0' (end of configuration string) is the UNICODE %02x bytes encoding
// of UEFI device path.
//
for (Length = 0; *String != 0 && *String != L'&'; String++, Length++) {
}
//
// Check DevicePath Length
//
if (((Length + 1) / 2) < sizeof (EFI_DEVICE_PATH_PROTOCOL)) {
return EFI_NOT_FOUND;
}
//
// The data in <PathHdr> is encoded as hex UNICODE %02x bytes in the same order
// as the device path resides in RAM memory.
// Translate the data into binary.
//
DevicePathBuffer = (UINT8 *)AllocateZeroPool ((Length + 1) / 2);
if (DevicePathBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Convert DevicePath
//
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < Length; Index++) {
TemStr[0] = PathHdr[Index];
DigitUint8 = (UINT8)StrHexToUint64 (TemStr);
if ((Index & 1) == 0) {
DevicePathBuffer[Index/2] = DigitUint8;
} else {
DevicePathBuffer[Index/2] = (UINT8)((DevicePathBuffer[Index/2] << 4) + DigitUint8);
}
}
//
// Validate DevicePath
//
DevicePath = (EFI_DEVICE_PATH_PROTOCOL *)DevicePathBuffer;
while (!IsDevicePathEnd (DevicePath)) {
if ((DevicePath->Type == 0) || (DevicePath->SubType == 0) || (DevicePathNodeLength (DevicePath) < sizeof (EFI_DEVICE_PATH_PROTOCOL))) {
//
// Invalid device path
//
FreePool (DevicePathBuffer);
return EFI_NOT_FOUND;
}
DevicePath = NextDevicePathNode (DevicePath);
}
//
// return the device path
//
*DevicePathData = DevicePathBuffer;
return EFI_SUCCESS;
}
/**
Converts the unicode character of the string from uppercase to lowercase.
This is a internal function.
@param ConfigString String to be converted
**/
VOID
EFIAPI
HiiToLower (
IN EFI_STRING ConfigString
)
{
EFI_STRING String;
BOOLEAN Lower;
ASSERT (ConfigString != NULL);
//
// Convert all hex digits in range [A-F] in the configuration header to [a-f]
//
for (String = ConfigString, Lower = FALSE; *String != L'\0'; String++) {
if (*String == L'=') {
Lower = TRUE;
} else if (*String == L'&') {
Lower = FALSE;
} else if (Lower && (*String >= L'A') && (*String <= L'F')) {
*String = (CHAR16)(*String - L'A' + L'a');
}
}
return;
}
/**
Generate a sub string then output it.
This is a internal function.
@param String A constant string which is the prefix of the to be
generated string, e.g. GUID=
@param BufferLen The length of the Buffer in bytes.
@param Buffer Points to a buffer which will be converted to be the
content of the generated string.
@param Flag If 1, the buffer contains data for the value of GUID or PATH stored in
UINT8 *; if 2, the buffer contains unicode string for the value of NAME;
if 3, the buffer contains other data.
@param SubStr Points to the output string. It's caller's
responsibility to free this buffer.
**/
VOID
GenerateSubStr (
IN CONST EFI_STRING String,
IN UINTN BufferLen,
IN VOID *Buffer,
IN UINT8 Flag,
OUT EFI_STRING *SubStr
)
{
UINTN Length;
EFI_STRING Str;
EFI_STRING StringHeader;
CHAR16 *TemString;
CHAR16 *TemName;
UINT8 *TemBuffer;
UINTN Index;
ASSERT (String != NULL && SubStr != NULL);
if (Buffer == NULL) {
*SubStr = AllocateCopyPool (StrSize (String), String);
ASSERT (*SubStr != NULL);
return;
}
//
// Header + Data + '&' + '\0'
//
Length = StrLen (String) + BufferLen * 2 + 1 + 1;
Str = AllocateZeroPool (Length * sizeof (CHAR16));
ASSERT (Str != NULL);
StrCpyS (Str, Length, String);
StringHeader = Str + StrLen (String);
TemString = (CHAR16 *)StringHeader;
switch (Flag) {
case 1:
//
// Convert Buffer to Hex String in reverse order
//
TemBuffer = ((UINT8 *)Buffer);
for (Index = 0; Index < BufferLen; Index++, TemBuffer++) {
UnicodeValueToStringS (
TemString,
sizeof (CHAR16) * (Length - StrnLenS (Str, Length)),
PREFIX_ZERO | RADIX_HEX,
*TemBuffer,
2
);
TemString += StrnLenS (TemString, Length - StrnLenS (Str, Length));
}
break;
case 2:
//
// Check buffer is enough
//
TemName = (CHAR16 *)Buffer;
ASSERT ((BufferLen * 2 + 1) >= (StrLen (TemName) * 4 + 1));
//
// Convert Unicode String to Config String, e.g. "ABCD" => "0041004200430044"
//
for ( ; *TemName != L'\0'; TemName++) {
UnicodeValueToStringS (
TemString,
sizeof (CHAR16) * (Length - StrnLenS (Str, Length)),
PREFIX_ZERO | RADIX_HEX,
*TemName,
4
);
TemString += StrnLenS (TemString, Length - StrnLenS (Str, Length));
}
break;
case 3:
//
// Convert Buffer to Hex String
//
TemBuffer = ((UINT8 *)Buffer) + BufferLen - 1;
for (Index = 0; Index < BufferLen; Index++, TemBuffer--) {
UnicodeValueToStringS (
TemString,
sizeof (CHAR16) * (Length - StrnLenS (Str, Length)),
PREFIX_ZERO | RADIX_HEX,
*TemBuffer,
2
);
TemString += StrnLenS (TemString, Length - StrnLenS (Str, Length));
}
break;
default:
break;
}
//
// Convert the uppercase to lowercase since <HexAf> is defined in lowercase format.
//
StrCatS (Str, Length, L"&");
HiiToLower (Str);
*SubStr = Str;
}
/**
Retrieve the <ConfigBody> from String then output it.
This is a internal function.
@param String A sub string of a configuration string in
<MultiConfigAltResp> format.
@param ConfigBody Points to the output string. It's caller's
responsibility to free this buffer.
@retval EFI_INVALID_PARAMETER There is no form package in current hii database.
@retval EFI_OUT_OF_RESOURCES Not enough memory to finish this operation.
@retval EFI_SUCCESS All existing storage is exported.
**/
EFI_STATUS
OutputConfigBody (
IN EFI_STRING String,
OUT EFI_STRING *ConfigBody
)
{
EFI_STRING TmpPtr;
EFI_STRING Result;
UINTN Length;
if ((String == NULL) || (ConfigBody == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// The setting information should start OFFSET, not ALTCFG.
//
if (StrnCmp (String, L"&ALTCFG=", StrLen (L"&ALTCFG=")) == 0) {
return EFI_INVALID_PARAMETER;
}
TmpPtr = StrStr (String, L"GUID=");
if (TmpPtr == NULL) {
//
// It is the last <ConfigResp> of the incoming configuration string.
//
Result = AllocateCopyPool (StrSize (String), String);
if (Result == NULL) {
return EFI_OUT_OF_RESOURCES;
} else {
*ConfigBody = Result;
return EFI_SUCCESS;
}
}
Length = TmpPtr - String;
if (Length == 0) {
return EFI_NOT_FOUND;
}
Result = AllocateCopyPool (Length * sizeof (CHAR16), String);
if (Result == NULL) {
return EFI_OUT_OF_RESOURCES;
}
*(Result + Length - 1) = 0;
*ConfigBody = Result;
return EFI_SUCCESS;
}
/**
Append a string to a multi-string format.
This is a internal function.
@param MultiString String in <MultiConfigRequest>,
<MultiConfigAltResp>, or <MultiConfigResp>. On
input, the buffer length of this string is
MAX_STRING_LENGTH. On output, the buffer length
might be updated.
@param AppendString NULL-terminated Unicode string.
@retval EFI_INVALID_PARAMETER Any incoming parameter is invalid.
@retval EFI_SUCCESS AppendString is append to the end of MultiString
**/
EFI_STATUS
AppendToMultiString (
IN OUT EFI_STRING *MultiString,
IN EFI_STRING AppendString
)
{
UINTN AppendStringSize;
UINTN MultiStringSize;
UINTN MaxLen;
if ((MultiString == NULL) || (*MultiString == NULL) || (AppendString == NULL)) {
return EFI_INVALID_PARAMETER;
}
AppendStringSize = StrSize (AppendString);
MultiStringSize = StrSize (*MultiString);
MaxLen = MAX_STRING_LENGTH / sizeof (CHAR16);
//
// Enlarge the buffer each time when length exceeds MAX_STRING_LENGTH.
//
if ((MultiStringSize + AppendStringSize > MAX_STRING_LENGTH) ||
(MultiStringSize > MAX_STRING_LENGTH))
{
*MultiString = (EFI_STRING)ReallocatePool (
MultiStringSize,
MultiStringSize + AppendStringSize,
(VOID *)(*MultiString)
);
MaxLen = (MultiStringSize + AppendStringSize) / sizeof (CHAR16);
ASSERT (*MultiString != NULL);
}
//
// Append the incoming string
//
StrCatS (*MultiString, MaxLen, AppendString);
return EFI_SUCCESS;
}
/**
Get the value of <Number> in <BlockConfig> format, i.e. the value of OFFSET
or WIDTH or VALUE.
<BlockConfig> ::= 'OFFSET='<Number>&'WIDTH='<Number>&'VALUE'=<Number>
This is a internal function.
@param StringPtr String in <BlockConfig> format and points to the
first character of <Number>.
@param Number The output value. Caller takes the responsibility
to free memory.
@param Len Length of the <Number>, in characters.
@retval EFI_OUT_OF_RESOURCES Insufficient resources to store necessary
structures.
@retval EFI_SUCCESS Value of <Number> is outputted in Number
successfully.
**/
EFI_STATUS
GetValueOfNumber (
IN EFI_STRING StringPtr,
OUT UINT8 **Number,
OUT UINTN *Len
)
{
EFI_STRING TmpPtr;
UINTN Length;
EFI_STRING Str;
UINT8 *Buf;
EFI_STATUS Status;
UINT8 DigitUint8;
UINTN Index;
CHAR16 TemStr[2];
if ((StringPtr == NULL) || (*StringPtr == L'\0') || (Number == NULL) || (Len == NULL)) {
return EFI_INVALID_PARAMETER;
}
Buf = NULL;
TmpPtr = StringPtr;
while (*StringPtr != L'\0' && *StringPtr != L'&') {
StringPtr++;
}
*Len = StringPtr - TmpPtr;
Length = *Len + 1;
Str = (EFI_STRING)AllocateZeroPool (Length * sizeof (CHAR16));
if (Str == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
CopyMem (Str, TmpPtr, *Len * sizeof (CHAR16));
*(Str + *Len) = L'\0';
Length = (Length + 1) / 2;
Buf = (UINT8 *)AllocateZeroPool (Length);
if (Buf == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
Length = *Len;
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < Length; Index++) {
TemStr[0] = Str[Length - Index - 1];
DigitUint8 = (UINT8)StrHexToUint64 (TemStr);
if ((Index & 1) == 0) {
Buf[Index/2] = DigitUint8;
} else {
Buf[Index/2] = (UINT8)((DigitUint8 << 4) + Buf[Index/2]);
}
}
*Number = Buf;
Status = EFI_SUCCESS;
Exit:
if (Str != NULL) {
FreePool (Str);
}
return Status;
}
/**
To find the BlockName in the string with same value.
@param String Pointer to a Null-terminated Unicode string.
@param BlockName Pointer to a Null-terminated Unicode string to search for.
@param Buffer Pointer to the value correspond to the BlockName.
@param Found The Block whether has been found.
@param BufferLen The length of the buffer.
@retval EFI_OUT_OF_RESOURCES Insufficient resources to store necessary structures.
@retval EFI_SUCCESS The function finishes successfully.
**/
EFI_STATUS
FindSameBlockElement (
IN EFI_STRING String,
IN EFI_STRING BlockName,
IN UINT8 *Buffer,
OUT BOOLEAN *Found,
IN UINTN BufferLen
)
{
EFI_STRING BlockPtr;
UINTN Length;
UINT8 *TempBuffer;
EFI_STATUS Status;
TempBuffer = NULL;
*Found = FALSE;
BlockPtr = StrStr (String, BlockName);
while (BlockPtr != NULL) {
BlockPtr += StrLen (BlockName);
Status = GetValueOfNumber (BlockPtr, &TempBuffer, &Length);
if (EFI_ERROR (Status)) {
return Status;
}
ASSERT (TempBuffer != NULL);
if ((BufferLen == Length) && (0 == CompareMem (Buffer, TempBuffer, Length))) {
*Found = TRUE;
FreePool (TempBuffer);
TempBuffer = NULL;
return EFI_SUCCESS;
} else {
FreePool (TempBuffer);
TempBuffer = NULL;
BlockPtr = StrStr (BlockPtr + 1, BlockName);
}
}
return EFI_SUCCESS;
}
/**
Compare the <AltResp> in ConfigAltResp and DefaultAltCfgResp, if the <AltResp>
in DefaultAltCfgResp but not in ConfigAltResp,add it to the ConfigAltResp.
@param DefaultAltCfgResp Pointer to a null-terminated Unicode string in
<MultiConfigAltResp> format. The default value
string may contain more than one ConfigAltResp
string for the different varstore buffer.
@param ConfigAltResp Pointer to a null-terminated Unicode string in
<ConfigAltResp> format.
@param AltConfigHdr Pointer to a Unicode string in <AltConfigHdr> format.
@param ConfigAltRespChanged Whether the ConfigAltResp has been changed.
@retval EFI_OUT_OF_RESOURCES Insufficient resources to store necessary structures.
@retval EFI_SUCCESS The function finishes successfully.
**/
EFI_STATUS
CompareBlockElementDefault (
IN EFI_STRING DefaultAltCfgResp,
IN OUT EFI_STRING *ConfigAltResp,
IN EFI_STRING AltConfigHdr,
IN OUT BOOLEAN *ConfigAltRespChanged
)
{
EFI_STATUS Status;
EFI_STRING BlockPtr;
EFI_STRING BlockPtrStart;
EFI_STRING StringPtr;
EFI_STRING AppendString;
EFI_STRING AltConfigHdrPtr;
UINT8 *TempBuffer;
UINTN OffsetLength;
UINTN AppendSize;
UINTN TotalSize;
BOOLEAN FoundOffset;
AppendString = NULL;
TempBuffer = NULL;
//
// Make BlockPtr point to the first <BlockConfig> with AltConfigHdr in DefaultAltCfgResp.
//
AltConfigHdrPtr = StrStr (DefaultAltCfgResp, AltConfigHdr);
ASSERT (AltConfigHdrPtr != NULL);
BlockPtr = StrStr (AltConfigHdrPtr, L"&OFFSET=");
//
// Make StringPtr point to the AltConfigHdr in ConfigAltResp.
//
StringPtr = StrStr (*ConfigAltResp, AltConfigHdr);
ASSERT (StringPtr != NULL);
while (BlockPtr != NULL) {
//
// Find the "&OFFSET=<Number>" block and get the value of the Number with AltConfigHdr in DefaultAltCfgResp.
//
BlockPtrStart = BlockPtr;
BlockPtr += StrLen (L"&OFFSET=");
Status = GetValueOfNumber (BlockPtr, &TempBuffer, &OffsetLength);
if (EFI_ERROR (Status)) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
//
// To find the same "&OFFSET=<Number>" block in ConfigAltResp.
//
Status = FindSameBlockElement (StringPtr, L"&OFFSET=", TempBuffer, &FoundOffset, OffsetLength);
if (TempBuffer != NULL) {
FreePool (TempBuffer);
TempBuffer = NULL;
}
if (EFI_ERROR (Status)) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
if (!FoundOffset) {
//
// Don't find the same "&OFFSET=<Number>" block in ConfigAltResp.
// Calculate the size of <BlockConfig>.
// <BlockConfig>::='OFFSET='<Number>'&WIDTH='<Number>'&VALUE='<Number>.
//
BlockPtr = StrStr (BlockPtr + 1, L"&OFFSET=");
if (BlockPtr != NULL) {
AppendSize = (BlockPtr - BlockPtrStart) * sizeof (CHAR16);
} else {
AppendSize = StrSize (BlockPtrStart);
}
//
// Copy the <BlockConfig> to AppendString.
//
if (AppendString == NULL) {
AppendString = (EFI_STRING)AllocateZeroPool (AppendSize + sizeof (CHAR16));
StrnCatS (AppendString, AppendSize / sizeof (CHAR16) + 1, BlockPtrStart, AppendSize / sizeof (CHAR16));
} else {
TotalSize = StrSize (AppendString) + AppendSize + sizeof (CHAR16);
AppendString = (EFI_STRING)ReallocatePool (
StrSize (AppendString),
TotalSize,
AppendString
);
if (AppendString == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
StrnCatS (AppendString, TotalSize / sizeof (CHAR16), BlockPtrStart, AppendSize / sizeof (CHAR16));
}
} else {
//
// To find next "&OFFSET=<Number>" block with AltConfigHdr in DefaultAltCfgResp.
//
BlockPtr = StrStr (BlockPtr + 1, L"&OFFSET=");
}
}
if (AppendString != NULL) {
//
// Reallocate ConfigAltResp to copy the AppendString.
//
TotalSize = StrSize (*ConfigAltResp) + StrSize (AppendString) + sizeof (CHAR16);
*ConfigAltResp = (EFI_STRING)ReallocatePool (
StrSize (*ConfigAltResp),
TotalSize,
*ConfigAltResp
);
if (*ConfigAltResp == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
StrCatS (*ConfigAltResp, TotalSize / sizeof (CHAR16), AppendString);
*ConfigAltRespChanged = TRUE;
}
Status = EFI_SUCCESS;
Exit:
if (AppendString != NULL) {
FreePool (AppendString);
}
return Status;
}
/**
Compare the <AltResp> in ConfigAltResp and DefaultAltCfgResp, if the <AltResp>
in DefaultAltCfgResp but not in ConfigAltResp,add it to the ConfigAltResp.
@param DefaultAltCfgResp Pointer to a null-terminated Unicode string in
<MultiConfigAltResp> format. The default value
string may contain more than one ConfigAltResp
string for the different varstore buffer.
@param ConfigAltResp Pointer to a null-terminated Unicode string in
<ConfigAltResp> format.
@param AltConfigHdr Pointer to a Unicode string in <AltConfigHdr> format.
@param ConfigAltRespChanged Whether the ConfigAltResp has been changed.
@retval EFI_OUT_OF_RESOURCES Insufficient resources to store necessary structures.
@retval EFI_SUCCESS The function finishes successfully.
**/
EFI_STATUS
CompareNameElementDefault (
IN EFI_STRING DefaultAltCfgResp,
IN OUT EFI_STRING *ConfigAltResp,
IN EFI_STRING AltConfigHdr,
IN OUT BOOLEAN *ConfigAltRespChanged
)
{
EFI_STATUS Status;
EFI_STRING NvConfigPtr;
EFI_STRING NvConfigStart;
EFI_STRING NvConfigValuePtr;
EFI_STRING StringPtr;
EFI_STRING NvConfigExist;
EFI_STRING AppendString;
CHAR16 TempChar;
UINTN AppendSize;
UINTN TotalSize;
AppendString = NULL;
NvConfigExist = NULL;
//
// Make NvConfigPtr point to the first <NvConfig> with AltConfigHdr in DefaultAltCfgResp.
//
NvConfigPtr = StrStr (DefaultAltCfgResp, AltConfigHdr);
ASSERT (NvConfigPtr != NULL);
NvConfigPtr = StrStr (NvConfigPtr + StrLen (AltConfigHdr), L"&");
//
// Make StringPtr point to the first <NvConfig> with AltConfigHdr in ConfigAltResp.
//
StringPtr = StrStr (*ConfigAltResp, AltConfigHdr);
ASSERT (StringPtr != NULL);
StringPtr = StrStr (StringPtr + StrLen (AltConfigHdr), L"&");
ASSERT (StringPtr != NULL);
while (NvConfigPtr != NULL) {
//
// <NvConfig> ::= <Label>'='<String> | <Label>'='<Number>.
// Get the <Label> with AltConfigHdr in DefaultAltCfgResp.
//
NvConfigStart = NvConfigPtr;
NvConfigValuePtr = StrStr (NvConfigPtr + 1, L"=");
ASSERT (NvConfigValuePtr != NULL);
TempChar = *NvConfigValuePtr;
*NvConfigValuePtr = L'\0';
//
// Get the <Label> with AltConfigHdr in ConfigAltResp.
//
NvConfigExist = StrStr (StringPtr, NvConfigPtr);
if (NvConfigExist == NULL) {
//
// Don't find same <Label> in ConfigAltResp.
// Calculate the size of <NvConfig>.
//
*NvConfigValuePtr = TempChar;
NvConfigPtr = StrStr (NvConfigPtr + 1, L"&");
if (NvConfigPtr != NULL) {
AppendSize = (NvConfigPtr - NvConfigStart) * sizeof (CHAR16);
} else {
AppendSize = StrSize (NvConfigStart);
}
//
// Copy the <NvConfig> to AppendString.
//
if (AppendString == NULL) {
AppendString = (EFI_STRING)AllocateZeroPool (AppendSize + sizeof (CHAR16));
StrnCatS (AppendString, AppendSize / sizeof (CHAR16) + 1, NvConfigStart, AppendSize / sizeof (CHAR16));
} else {
TotalSize = StrSize (AppendString) + AppendSize + sizeof (CHAR16);
AppendString = (EFI_STRING)ReallocatePool (
StrSize (AppendString),
TotalSize,
AppendString
);
if (AppendString == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
StrnCatS (AppendString, TotalSize / sizeof (CHAR16), NvConfigStart, AppendSize / sizeof (CHAR16));
}
} else {
//
// To find next <Label> in DefaultAltCfgResp.
//
*NvConfigValuePtr = TempChar;
NvConfigPtr = StrStr (NvConfigPtr + 1, L"&");
}
}
if (AppendString != NULL) {
//
// Reallocate ConfigAltResp to copy the AppendString.
//
TotalSize = StrSize (*ConfigAltResp) + StrSize (AppendString) + sizeof (CHAR16);
*ConfigAltResp = (EFI_STRING)ReallocatePool (
StrSize (*ConfigAltResp),
StrSize (*ConfigAltResp) + StrSize (AppendString) + sizeof (CHAR16),
*ConfigAltResp
);
if (*ConfigAltResp == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
StrCatS (*ConfigAltResp, TotalSize / sizeof (CHAR16), AppendString);
*ConfigAltRespChanged = TRUE;
}
Status = EFI_SUCCESS;
Exit:
if (AppendString != NULL) {
FreePool (AppendString);
}
return Status;
}
/**
Compare the <AltResp> in AltCfgResp and DefaultAltCfgResp, if the <AltResp>
in DefaultAltCfgResp but not in AltCfgResp,add it to the AltCfgResp.
@param AltCfgResp Pointer to a null-terminated Unicode string in
<ConfigAltResp> format.
@param DefaultAltCfgResp Pointer to a null-terminated Unicode string in
<MultiConfigAltResp> format. The default value
string may contain more than one ConfigAltResp
string for the different varstore buffer.
@param AltConfigHdr Pointer to a Unicode string in <AltConfigHdr> format.
@retval EFI_OUT_OF_RESOURCES Insufficient resources to store necessary
structures.
@retval EFI_SUCCESS The function finishes successfully.
**/
EFI_STATUS
CompareAndMergeDefaultString (
IN OUT EFI_STRING *AltCfgResp,
IN EFI_STRING DefaultAltCfgResp,
IN EFI_STRING AltConfigHdr
)
{
EFI_STATUS Status;
EFI_STRING AltCfgRespBackup;
EFI_STRING AltConfigHdrPtr;
EFI_STRING AltConfigHdrPtrNext;
EFI_STRING ConfigAltResp;
EFI_STRING StringPtr;
EFI_STRING StringPtrNext;
EFI_STRING BlockPtr;
UINTN ReallocateSize;
CHAR16 TempChar;
CHAR16 TempCharA;
BOOLEAN ConfigAltRespChanged;
Status = EFI_OUT_OF_RESOURCES;
BlockPtr = NULL;
AltConfigHdrPtrNext = NULL;
StringPtrNext = NULL;
ConfigAltResp = NULL;
AltCfgRespBackup = NULL;
TempChar = L'\0';
TempCharA = L'\0';
ConfigAltRespChanged = FALSE;
//
// To find the <AltResp> with AltConfigHdr in DefaultAltCfgResp, ignore other <AltResp> which follow it.
//
AltConfigHdrPtr = StrStr (DefaultAltCfgResp, AltConfigHdr);
ASSERT (AltConfigHdrPtr != NULL);
AltConfigHdrPtrNext = StrStr (AltConfigHdrPtr + 1, L"&GUID");
if (AltConfigHdrPtrNext != NULL) {
TempChar = *AltConfigHdrPtrNext;
*AltConfigHdrPtrNext = L'\0';
}
//
// To find the <AltResp> with AltConfigHdr in AltCfgResp, ignore other <AltResp> which follow it.
//
StringPtr = StrStr (*AltCfgResp, AltConfigHdr);
ASSERT (StringPtr != NULL);
StringPtrNext = StrStr (StringPtr + 1, L"&GUID");
if (StringPtrNext != NULL) {
TempCharA = *StringPtrNext;
*StringPtrNext = L'\0';
}
//
// Copy the content of <ConfigAltResp> which contain current AltConfigHdr in AltCfgResp.
//
ConfigAltResp = AllocateCopyPool (StrSize (*AltCfgResp), *AltCfgResp);
if (ConfigAltResp == NULL) {
goto Exit;
}
//
// To find the <ConfigBody> with AltConfigHdr in DefaultAltCfgResp.
//
BlockPtr = StrStr (AltConfigHdrPtr, L"&OFFSET=");
if (BlockPtr != NULL) {
//
// <BlockConfig>::='OFFSET='<Number>'&WIDTH='<Number>'&VALUE='<Number> style.
// Call function CompareBlockElementDefault to compare the <BlockConfig> in DefaultAltCfgResp and ConfigAltResp.
// The ConfigAltResp which may contain the new <BlockConfig> get from DefaultAltCfgResp.
//
Status = CompareBlockElementDefault (DefaultAltCfgResp, &ConfigAltResp, AltConfigHdr, &ConfigAltRespChanged);
if (EFI_ERROR (Status)) {
goto Exit;
}
} else {
//
// <NvConfig> ::= <Label>'='<String> | <Label>'='<Number> style.
// Call function CompareNameElementDefault to compare the <NvConfig> in DefaultAltCfgResp and ConfigAltResp.
// The ConfigAltResp which may contain the new <NvConfig> get from DefaultAltCfgResp.
//
Status = CompareNameElementDefault (DefaultAltCfgResp, &ConfigAltResp, AltConfigHdr, &ConfigAltRespChanged);
if (EFI_ERROR (Status)) {
goto Exit;
}
}
//
// Restore the AltCfgResp.
//
if (StringPtrNext != NULL) {
*StringPtrNext = TempCharA;
}
//
// If the ConfigAltResp has no change,no need to update the content in AltCfgResp.
//
if (!ConfigAltRespChanged) {
Status = EFI_SUCCESS;
goto Exit;
}
//
// ConfigAltResp has been changed, need to update the content in AltCfgResp.
//
if (StringPtrNext != NULL) {
ReallocateSize = StrSize (ConfigAltResp) + StrSize (StringPtrNext) + sizeof (CHAR16);
} else {
ReallocateSize = StrSize (ConfigAltResp) + sizeof (CHAR16);
}
AltCfgRespBackup = (EFI_STRING)AllocateZeroPool (ReallocateSize);
if (AltCfgRespBackup == NULL) {
goto Exit;
}
StrCatS (AltCfgRespBackup, ReallocateSize / sizeof (CHAR16), ConfigAltResp);
if (StringPtrNext != NULL) {
StrCatS (AltCfgRespBackup, ReallocateSize / sizeof (CHAR16), StringPtrNext);
}
FreePool (*AltCfgResp);
*AltCfgResp = AltCfgRespBackup;
Status = EFI_SUCCESS;
Exit:
if (ConfigAltResp != NULL) {
FreePool (ConfigAltResp);
}
//
// Restore the DefaultAltCfgResp.
//
if ( AltConfigHdrPtrNext != NULL) {
*AltConfigHdrPtrNext = TempChar;
AltConfigHdrPtrNext = NULL;
}
return Status;
}
/**
This function merges DefaultAltCfgResp string into AltCfgResp string for
the missing AltCfgId in AltCfgResq.
@param AltCfgResp Pointer to a null-terminated Unicode string in
<ConfigAltResp> format. The default value string
will be merged into it.
@param DefaultAltCfgResp Pointer to a null-terminated Unicode string in
<MultiConfigAltResp> format. The default value
string may contain more than one ConfigAltResp
string for the different varstore buffer.
@retval EFI_SUCCESS The merged string returns.
@retval EFI_INVALID_PARAMETER *AltCfgResp is to NULL.
**/
EFI_STATUS
EFIAPI
MergeDefaultString (
IN OUT EFI_STRING *AltCfgResp,
IN EFI_STRING DefaultAltCfgResp
)
{
EFI_STRING StringPtrDefault;
EFI_STRING StringPtrEnd;
CHAR16 TempChar;
EFI_STRING StringPtr;
EFI_STRING AltConfigHdr;
UINTN HeaderLength;
UINTN SizeAltCfgResp;
UINTN MaxLen;
UINTN TotalSize;
if (*AltCfgResp == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Get the request ConfigHdr
//
SizeAltCfgResp = 0;
StringPtr = *AltCfgResp;
//
// Find <ConfigHdr> GUID=...&NAME=...&PATH=...
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
return EFI_INVALID_PARAMETER;
}
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&NAME=", StrLen (L"&NAME=")) != 0) {
StringPtr++;
}
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&PATH=", StrLen (L"&PATH=")) != 0) {
StringPtr++;
}
if (*StringPtr == L'\0') {
return EFI_INVALID_PARAMETER;
}
StringPtr += StrLen (L"&PATH=");
while (*StringPtr != L'\0' && *StringPtr != L'&') {
StringPtr++;
}
HeaderLength = StringPtr - *AltCfgResp;
//
// Construct AltConfigHdr string "&<ConfigHdr>&ALTCFG=XXXX\0"
// |1| StrLen (ConfigHdr) | 8 | 4 | 1 |
//
MaxLen = 1 + HeaderLength + 8 + 4 + 1;
AltConfigHdr = AllocateZeroPool (MaxLen * sizeof (CHAR16));
if (AltConfigHdr == NULL) {
return EFI_OUT_OF_RESOURCES;
}
StrCpyS (AltConfigHdr, MaxLen, L"&");
StrnCatS (AltConfigHdr, MaxLen, *AltCfgResp, HeaderLength);
StrCatS (AltConfigHdr, MaxLen, L"&ALTCFG=");
HeaderLength = StrLen (AltConfigHdr);
StringPtrDefault = StrStr (DefaultAltCfgResp, AltConfigHdr);
while (StringPtrDefault != NULL) {
//
// Get AltCfg Name
//
StrnCatS (AltConfigHdr, MaxLen, StringPtrDefault + HeaderLength, 4);
StringPtr = StrStr (*AltCfgResp, AltConfigHdr);
//
// Append the found default value string to the input AltCfgResp
//
if (StringPtr == NULL) {
StringPtrEnd = StrStr (StringPtrDefault + 1, L"&GUID");
SizeAltCfgResp = StrSize (*AltCfgResp);
if (StringPtrEnd == NULL) {
//
// No more default string is found.
//
TotalSize = SizeAltCfgResp + StrSize (StringPtrDefault);
*AltCfgResp = (EFI_STRING)ReallocatePool (
SizeAltCfgResp,
TotalSize,
(VOID *)(*AltCfgResp)
);
if (*AltCfgResp == NULL) {
FreePool (AltConfigHdr);
return EFI_OUT_OF_RESOURCES;
}
StrCatS (*AltCfgResp, TotalSize / sizeof (CHAR16), StringPtrDefault);
break;
} else {
TempChar = *StringPtrEnd;
*StringPtrEnd = L'\0';
TotalSize = SizeAltCfgResp + StrSize (StringPtrDefault);
*AltCfgResp = (EFI_STRING)ReallocatePool (
SizeAltCfgResp,
TotalSize,
(VOID *)(*AltCfgResp)
);
if (*AltCfgResp == NULL) {
FreePool (AltConfigHdr);
return EFI_OUT_OF_RESOURCES;
}
StrCatS (*AltCfgResp, TotalSize / sizeof (CHAR16), StringPtrDefault);
*StringPtrEnd = TempChar;
}
} else {
//
// The AltCfgResp contains <AltCfgResp>.
// If the <ConfigElement> in <AltCfgResp> in the DefaultAltCfgResp but not in the
// related <AltCfgResp> in AltCfgResp, merge it to AltCfgResp. else no need to merge.
//
CompareAndMergeDefaultString (AltCfgResp, DefaultAltCfgResp, AltConfigHdr);
}
//
// Find next AltCfg String
//
*(AltConfigHdr + HeaderLength) = L'\0';
StringPtrDefault = StrStr (StringPtrDefault + 1, AltConfigHdr);
}
FreePool (AltConfigHdr);
return EFI_SUCCESS;
}
/**
This function inserts new DefaultValueData into the BlockData DefaultValue array.
@param BlockData The BlockData is updated to add new default value.
@param DefaultValueData The DefaultValue is added.
**/
VOID
InsertDefaultValue (
IN IFR_BLOCK_DATA *BlockData,
IN IFR_DEFAULT_DATA *DefaultValueData
)
{
LIST_ENTRY *Link;
IFR_DEFAULT_DATA *DefaultValueArray;
LIST_ENTRY *DefaultLink;
DefaultLink = &BlockData->DefaultValueEntry;
for (Link = DefaultLink->ForwardLink; Link != DefaultLink; Link = Link->ForwardLink) {
DefaultValueArray = BASE_CR (Link, IFR_DEFAULT_DATA, Entry);
if (DefaultValueArray->DefaultId == DefaultValueData->DefaultId) {
//
// DEFAULT_VALUE_FROM_OPCODE has high priority, DEFAULT_VALUE_FROM_DEFAULT has low priority.
// When default types are DEFAULT_VALUE_FROM_OTHER_DEFAULT, the default value can be overrode.
//
if ((DefaultValueData->Type > DefaultValueArray->Type) || ((DefaultValueData->Type == DefaultValueArray->Type) && (DefaultValueData->Type == DefaultValueFromOtherDefault))) {
//
// Update the default value array in BlockData.
//
CopyMem (&DefaultValueArray->Value, &DefaultValueData->Value, sizeof (EFI_IFR_TYPE_VALUE));
DefaultValueArray->Type = DefaultValueData->Type;
DefaultValueArray->Cleaned = DefaultValueData->Cleaned;
}
return;
}
}
//
// Insert new default value data in tail.
//
DefaultValueArray = AllocateZeroPool (sizeof (IFR_DEFAULT_DATA));
ASSERT (DefaultValueArray != NULL);
CopyMem (DefaultValueArray, DefaultValueData, sizeof (IFR_DEFAULT_DATA));
InsertTailList (Link, &DefaultValueArray->Entry);
}
/**
This function inserts new BlockData into the block link
@param BlockLink The list entry points to block array.
@param BlockData The point to BlockData is added.
**/
VOID
InsertBlockData (
IN LIST_ENTRY *BlockLink,
IN IFR_BLOCK_DATA **BlockData
)
{
LIST_ENTRY *Link;
IFR_BLOCK_DATA *BlockArray;
IFR_BLOCK_DATA *BlockSingleData;
BlockSingleData = *BlockData;
if (BlockSingleData->Name != NULL) {
InsertTailList (BlockLink, &BlockSingleData->Entry);
return;
}
//
// Insert block data in its Offset and Width order.
//
for (Link = BlockLink->ForwardLink; Link != BlockLink; Link = Link->ForwardLink) {
BlockArray = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if (BlockArray->Offset == BlockSingleData->Offset) {
if ((BlockArray->Width > BlockSingleData->Width) || (BlockSingleData->IsBitVar && (BlockArray->Width == BlockSingleData->Width))) {
//
// Insert this block data in the front of block array
//
InsertTailList (Link, &BlockSingleData->Entry);
return;
}
if ((!BlockSingleData->IsBitVar) && (BlockArray->Width == BlockSingleData->Width)) {
//
// The same block array has been added.
//
if (BlockSingleData != BlockArray) {
FreePool (BlockSingleData);
*BlockData = BlockArray;
}
return;
}
} else if (BlockArray->Offset > BlockSingleData->Offset) {
//
// Insert new block data in the front of block array
//
InsertTailList (Link, &BlockSingleData->Entry);
return;
}
}
//
// Add new block data into the tail.
//
InsertTailList (Link, &BlockSingleData->Entry);
}
/**
Retrieves a pointer to the a Null-terminated ASCII string containing the list
of languages that an HII handle in the HII Database supports. The returned
string is allocated using AllocatePool(). The caller is responsible for freeing
the returned string using FreePool(). The format of the returned string follows
the language format assumed the HII Database.
If HiiHandle is NULL, then ASSERT().
@param[in] HiiHandle A handle that was previously registered in the HII Database.
@retval NULL HiiHandle is not registered in the HII database
@retval NULL There are not enough resources available to retrieve the supported
languages.
@retval NULL The list of supported languages could not be retrieved.
@retval Other A pointer to the Null-terminated ASCII string of supported languages.
**/
CHAR8 *
GetSupportedLanguages (
IN EFI_HII_HANDLE HiiHandle
)
{
EFI_STATUS Status;
UINTN LanguageSize;
CHAR8 TempSupportedLanguages;
CHAR8 *SupportedLanguages;
ASSERT (HiiHandle != NULL);
//
// Retrieve the size required for the supported languages buffer.
//
LanguageSize = 0;
Status = mPrivate.HiiString.GetLanguages (&mPrivate.HiiString, HiiHandle, &TempSupportedLanguages, &LanguageSize);
//
// If GetLanguages() returns EFI_SUCCESS for a zero size,
// then there are no supported languages registered for HiiHandle. If GetLanguages()
// returns an error other than EFI_BUFFER_TOO_SMALL, then HiiHandle is not present
// in the HII Database
//
if (Status != EFI_BUFFER_TOO_SMALL) {
//
// Return NULL if the size can not be retrieved, or if HiiHandle is not in the HII Database
//
return NULL;
}
//
// Allocate the supported languages buffer.
//
SupportedLanguages = AllocateZeroPool (LanguageSize);
if (SupportedLanguages == NULL) {
//
// Return NULL if allocation fails.
//
return NULL;
}
//
// Retrieve the supported languages string
//
Status = mPrivate.HiiString.GetLanguages (&mPrivate.HiiString, HiiHandle, SupportedLanguages, &LanguageSize);
if (EFI_ERROR (Status)) {
//
// Free the buffer and return NULL if the supported languages can not be retrieved.
//
FreePool (SupportedLanguages);
return NULL;
}
//
// Return the Null-terminated ASCII string of supported languages
//
return SupportedLanguages;
}
/**
Retrieves a string from a string package.
If HiiHandle is NULL, then ASSERT().
If StringId is 0, then ASSET.
@param[in] HiiHandle A handle that was previously registered in the HII Database.
@param[in] StringId The identifier of the string to retrieved from the string
package associated with HiiHandle.
@retval NULL The string specified by StringId is not present in the string package.
@retval Other The string was returned.
**/
EFI_STRING
InternalGetString (
IN EFI_HII_HANDLE HiiHandle,
IN EFI_STRING_ID StringId
)
{
EFI_STATUS Status;
UINTN StringSize;
CHAR16 TempString;
EFI_STRING String;
CHAR8 *SupportedLanguages;
CHAR8 *PlatformLanguage;
CHAR8 *BestLanguage;
CHAR8 *Language;
ASSERT (HiiHandle != NULL);
ASSERT (StringId != 0);
//
// Initialize all allocated buffers to NULL
//
SupportedLanguages = NULL;
PlatformLanguage = NULL;
BestLanguage = NULL;
String = NULL;
Language = "";
//
// Get the languages that the package specified by HiiHandle supports
//
SupportedLanguages = GetSupportedLanguages (HiiHandle);
if (SupportedLanguages == NULL) {
goto Error;
}
//
// Get the current platform language setting
//
GetEfiGlobalVariable2 (L"PlatformLang", (VOID **)&PlatformLanguage, NULL);
//
// Get the best matching language from SupportedLanguages
//
BestLanguage = GetBestLanguage (
SupportedLanguages,
FALSE, // RFC 4646 mode
Language, // Highest priority
PlatformLanguage != NULL ? PlatformLanguage : "", // Next highest priority
SupportedLanguages, // Lowest priority
NULL
);
if (BestLanguage == NULL) {
goto Error;
}
//
// Retrieve the size of the string in the string package for the BestLanguage
//
StringSize = 0;
Status = mPrivate.HiiString.GetString (
&mPrivate.HiiString,
BestLanguage,
HiiHandle,
StringId,
&TempString,
&StringSize,
NULL
);
//
// If GetString() returns EFI_SUCCESS for a zero size,
// then there are no supported languages registered for HiiHandle. If GetString()
// returns an error other than EFI_BUFFER_TOO_SMALL, then HiiHandle is not present
// in the HII Database
//
if (Status != EFI_BUFFER_TOO_SMALL) {
goto Error;
}
//
// Allocate a buffer for the return string
//
String = AllocateZeroPool (StringSize);
if (String == NULL) {
goto Error;
}
//
// Retrieve the string from the string package
//
Status = mPrivate.HiiString.GetString (
&mPrivate.HiiString,
BestLanguage,
HiiHandle,
StringId,
String,
&StringSize,
NULL
);
if (EFI_ERROR (Status)) {
//
// Free the buffer and return NULL if the supported languages can not be retrieved.
//
FreePool (String);
String = NULL;
}
Error:
//
// Free allocated buffers
//
if (SupportedLanguages != NULL) {
FreePool (SupportedLanguages);
}
if (PlatformLanguage != NULL) {
FreePool (PlatformLanguage);
}
if (BestLanguage != NULL) {
FreePool (BestLanguage);
}
//
// Return the Null-terminated Unicode string
//
return String;
}
/**
This function checks VarOffset and VarWidth is in the block range.
@param RequestBlockArray The block array is to be checked.
@param VarOffset Offset of var to the structure
@param VarWidth Width of var.
@param IsNameValueType Whether this varstore is name/value varstore or not.
@param HiiHandle Hii handle for this hii package.
@retval TRUE This Var is in the block range.
@retval FALSE This Var is not in the block range.
**/
BOOLEAN
BlockArrayCheck (
IN IFR_BLOCK_DATA *RequestBlockArray,
IN UINT16 VarOffset,
IN UINT16 VarWidth,
IN BOOLEAN IsNameValueType,
IN EFI_HII_HANDLE HiiHandle
)
{
LIST_ENTRY *Link;
IFR_BLOCK_DATA *BlockData;
EFI_STRING Name;
//
// No Request Block array, all vars are got.
//
if (RequestBlockArray == NULL) {
return TRUE;
}
//
// Check the input var is in the request block range.
//
for (Link = RequestBlockArray->Entry.ForwardLink; Link != &RequestBlockArray->Entry; Link = Link->ForwardLink) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if (IsNameValueType) {
Name = InternalGetString (HiiHandle, VarOffset);
ASSERT (Name != NULL);
if (StrnCmp (BlockData->Name, Name, StrLen (Name)) == 0) {
FreePool (Name);
return TRUE;
}
FreePool (Name);
} else {
if ((VarOffset >= BlockData->Offset) && ((VarOffset + VarWidth) <= (BlockData->Offset + BlockData->Width))) {
return TRUE;
}
}
}
return FALSE;
}
/**
Get form package data from data base.
@param DataBaseRecord The DataBaseRecord instance contains the found Hii handle and package.
@param HiiFormPackage The buffer saves the package data.
@param PackageSize The buffer size of the package data.
**/
EFI_STATUS
GetFormPackageData (
IN HII_DATABASE_RECORD *DataBaseRecord,
IN OUT UINT8 **HiiFormPackage,
OUT UINTN *PackageSize
)
{
EFI_STATUS Status;
UINTN Size;
UINTN ResultSize;
if ((DataBaseRecord == NULL) || (HiiFormPackage == NULL) || (PackageSize == NULL)) {
return EFI_INVALID_PARAMETER;
}
Size = 0;
ResultSize = 0;
//
// 0. Get Hii Form Package by HiiHandle
//
Status = ExportFormPackages (
&mPrivate,
DataBaseRecord->Handle,
DataBaseRecord->PackageList,
0,
Size,
HiiFormPackage,
&ResultSize
);
if (EFI_ERROR (Status)) {
return Status;
}
(*HiiFormPackage) = AllocatePool (ResultSize);
if (*HiiFormPackage == NULL) {
Status = EFI_OUT_OF_RESOURCES;
return Status;
}
//
// Get HiiFormPackage by HiiHandle
//
Size = ResultSize;
ResultSize = 0;
Status = ExportFormPackages (
&mPrivate,
DataBaseRecord->Handle,
DataBaseRecord->PackageList,
0,
Size,
*HiiFormPackage,
&ResultSize
);
if (EFI_ERROR (Status)) {
FreePool (*HiiFormPackage);
}
*PackageSize = Size;
return Status;
}
/**
This function parses Form Package to get the efi varstore info according to the request ConfigHdr.
@param DataBaseRecord The DataBaseRecord instance contains the found Hii handle and package.
@param ConfigHdr Request string ConfigHdr. If it is NULL,
the first found varstore will be as ConfigHdr.
@param IsEfiVarstore Whether the request storage type is efi varstore type.
@param EfiVarStore The efi varstore info which will return.
**/
EFI_STATUS
GetVarStoreType (
IN HII_DATABASE_RECORD *DataBaseRecord,
IN EFI_STRING ConfigHdr,
OUT BOOLEAN *IsEfiVarstore,
OUT EFI_IFR_VARSTORE_EFI **EfiVarStore
)
{
EFI_STATUS Status;
UINTN IfrOffset;
UINTN PackageOffset;
EFI_IFR_OP_HEADER *IfrOpHdr;
CHAR16 *VarStoreName;
UINTN NameSize;
EFI_STRING GuidStr;
EFI_STRING NameStr;
EFI_STRING TempStr;
UINTN LengthString;
UINT8 *HiiFormPackage;
UINTN PackageSize;
EFI_IFR_VARSTORE_EFI *IfrEfiVarStore;
EFI_HII_PACKAGE_HEADER *PackageHeader;
HiiFormPackage = NULL;
LengthString = 0;
Status = EFI_SUCCESS;
GuidStr = NULL;
NameStr = NULL;
TempStr = NULL;
*IsEfiVarstore = FALSE;
Status = GetFormPackageData (DataBaseRecord, &HiiFormPackage, &PackageSize);
if (EFI_ERROR (Status)) {
return Status;
}
IfrOffset = sizeof (EFI_HII_PACKAGE_HEADER);
PackageOffset = IfrOffset;
PackageHeader = (EFI_HII_PACKAGE_HEADER *)HiiFormPackage;
while (IfrOffset < PackageSize) {
//
// More than one form packages exist.
//
if (PackageOffset >= PackageHeader->Length) {
//
// Process the new form package.
//
PackageOffset = sizeof (EFI_HII_PACKAGE_HEADER);
IfrOffset += PackageOffset;
PackageHeader = (EFI_HII_PACKAGE_HEADER *)(HiiFormPackage + IfrOffset);
}
IfrOpHdr = (EFI_IFR_OP_HEADER *)(HiiFormPackage + IfrOffset);
IfrOffset += IfrOpHdr->Length;
PackageOffset += IfrOpHdr->Length;
if (IfrOpHdr->OpCode == EFI_IFR_VARSTORE_EFI_OP ) {
IfrEfiVarStore = (EFI_IFR_VARSTORE_EFI *)IfrOpHdr;
//
// If the length is small than the structure, this is from old efi
// varstore definition. Old efi varstore get config directly from
// GetVariable function.
//
if (IfrOpHdr->Length < sizeof (EFI_IFR_VARSTORE_EFI)) {
continue;
}
NameSize = AsciiStrSize ((CHAR8 *)IfrEfiVarStore->Name);
VarStoreName = AllocateZeroPool (NameSize * sizeof (CHAR16));
if (VarStoreName == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
AsciiStrToUnicodeStrS ((CHAR8 *)IfrEfiVarStore->Name, VarStoreName, NameSize);
GenerateSubStr (L"GUID=", sizeof (EFI_GUID), (VOID *)&IfrEfiVarStore->Guid, 1, &GuidStr);
GenerateSubStr (L"NAME=", StrLen (VarStoreName) * sizeof (CHAR16), (VOID *)VarStoreName, 2, &NameStr);
LengthString = StrLen (GuidStr);
LengthString = LengthString + StrLen (NameStr) + 1;
TempStr = AllocateZeroPool (LengthString * sizeof (CHAR16));
if (TempStr == NULL) {
FreePool (GuidStr);
FreePool (NameStr);
FreePool (VarStoreName);
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
StrCpyS (TempStr, LengthString, GuidStr);
StrCatS (TempStr, LengthString, NameStr);
if ((ConfigHdr == NULL) || (StrnCmp (ConfigHdr, TempStr, StrLen (TempStr)) == 0)) {
*EfiVarStore = (EFI_IFR_VARSTORE_EFI *)AllocateZeroPool (IfrOpHdr->Length);
if (*EfiVarStore == NULL) {
FreePool (VarStoreName);
FreePool (GuidStr);
FreePool (NameStr);
FreePool (TempStr);
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
*IsEfiVarstore = TRUE;
CopyMem (*EfiVarStore, IfrEfiVarStore, IfrOpHdr->Length);
}
//
// Free allocated temp string.
//
FreePool (VarStoreName);
FreePool (GuidStr);
FreePool (NameStr);
FreePool (TempStr);
//
// Already found the varstore, break;
//
if (*IsEfiVarstore) {
break;
}
}
}
Done:
if (HiiFormPackage != NULL) {
FreePool (HiiFormPackage);
}
return Status;
}
/**
Check whether the ConfigRequest string has the request elements.
For EFI_HII_VARSTORE_BUFFER type, the request has "&OFFSET=****&WIDTH=****..." format.
For EFI_HII_VARSTORE_NAME_VALUE type, the request has "&NAME1**&NAME2..." format.
@param ConfigRequest The input config request string.
@retval TRUE The input include config request elements.
@retval FALSE The input string not includes.
**/
BOOLEAN
GetElementsFromRequest (
IN EFI_STRING ConfigRequest
)
{
EFI_STRING TmpRequest;
TmpRequest = StrStr (ConfigRequest, L"PATH=");
ASSERT (TmpRequest != NULL);
if ((StrStr (TmpRequest, L"&OFFSET=") != NULL) || (StrStr (TmpRequest, L"&") != NULL)) {
return TRUE;
}
return FALSE;
}
/**
Check whether the this varstore is the request varstore.
@param VarstoreGuid Varstore guid.
@param Name Varstore name.
@param ConfigHdr Current configRequest info.
@retval TRUE This varstore is the request one.
@retval FALSE This varstore is not the request one.
**/
BOOLEAN
IsThisVarstore (
IN EFI_GUID *VarstoreGuid,
IN CHAR16 *Name,
IN CHAR16 *ConfigHdr
)
{
EFI_STRING GuidStr;
EFI_STRING NameStr;
EFI_STRING TempStr;
UINTN LengthString;
BOOLEAN RetVal;
RetVal = FALSE;
GuidStr = NULL;
TempStr = NULL;
//
// If ConfigHdr has name field and varstore not has name, return FALSE.
//
if ((Name == NULL) && (ConfigHdr != NULL) && (StrStr (ConfigHdr, L"NAME=&") == NULL)) {
return FALSE;
}
GenerateSubStr (L"GUID=", sizeof (EFI_GUID), (VOID *)VarstoreGuid, 1, &GuidStr);
if (Name != NULL) {
GenerateSubStr (L"NAME=", StrLen (Name) * sizeof (CHAR16), (VOID *)Name, 2, &NameStr);
} else {
GenerateSubStr (L"NAME=", 0, NULL, 2, &NameStr);
}
LengthString = StrLen (GuidStr);
LengthString = LengthString + StrLen (NameStr) + 1;
TempStr = AllocateZeroPool (LengthString * sizeof (CHAR16));
if (TempStr == NULL) {
goto Done;
}
StrCpyS (TempStr, LengthString, GuidStr);
StrCatS (TempStr, LengthString, NameStr);
if ((ConfigHdr == NULL) || (StrnCmp (ConfigHdr, TempStr, StrLen (TempStr)) == 0)) {
RetVal = TRUE;
}
Done:
if (GuidStr != NULL) {
FreePool (GuidStr);
}
if (NameStr != NULL) {
FreePool (NameStr);
}
if (TempStr != NULL) {
FreePool (TempStr);
}
return RetVal;
}
/**
This function parses Form Package to get the efi varstore info according to the request ConfigHdr.
@param DataBaseRecord The DataBaseRecord instance contains the found Hii handle and package.
@param ConfigHdr Request string ConfigHdr. If it is NULL,
the first found varstore will be as ConfigHdr.
@retval TRUE This hii package is the request one.
@retval FALSE This hii package is not the request one.
**/
BOOLEAN
IsThisPackageList (
IN HII_DATABASE_RECORD *DataBaseRecord,
IN EFI_STRING ConfigHdr
)
{
EFI_STATUS Status;
UINTN IfrOffset;
UINTN PackageOffset;
EFI_IFR_OP_HEADER *IfrOpHdr;
CHAR16 *VarStoreName;
UINTN NameSize;
UINT8 *HiiFormPackage;
UINTN PackageSize;
EFI_IFR_VARSTORE_EFI *IfrEfiVarStore;
EFI_HII_PACKAGE_HEADER *PackageHeader;
EFI_IFR_VARSTORE *IfrVarStore;
EFI_IFR_VARSTORE_NAME_VALUE *IfrNameValueVarStore;
BOOLEAN FindVarstore;
HiiFormPackage = NULL;
VarStoreName = NULL;
Status = EFI_SUCCESS;
FindVarstore = FALSE;
Status = GetFormPackageData (DataBaseRecord, &HiiFormPackage, &PackageSize);
if (EFI_ERROR (Status)) {
return FALSE;
}
IfrOffset = sizeof (EFI_HII_PACKAGE_HEADER);
PackageOffset = IfrOffset;
PackageHeader = (EFI_HII_PACKAGE_HEADER *)HiiFormPackage;
while (IfrOffset < PackageSize) {
//
// More than one form packages exist.
//
if (PackageOffset >= PackageHeader->Length) {
//
// Process the new form package.
//
PackageOffset = sizeof (EFI_HII_PACKAGE_HEADER);
IfrOffset += PackageOffset;
PackageHeader = (EFI_HII_PACKAGE_HEADER *)(HiiFormPackage + IfrOffset);
}
IfrOpHdr = (EFI_IFR_OP_HEADER *)(HiiFormPackage + IfrOffset);
IfrOffset += IfrOpHdr->Length;
PackageOffset += IfrOpHdr->Length;
switch (IfrOpHdr->OpCode) {
case EFI_IFR_VARSTORE_OP:
IfrVarStore = (EFI_IFR_VARSTORE *)IfrOpHdr;
NameSize = AsciiStrSize ((CHAR8 *)IfrVarStore->Name);
VarStoreName = AllocateZeroPool (NameSize * sizeof (CHAR16));
if (VarStoreName == NULL) {
goto Done;
}
AsciiStrToUnicodeStrS ((CHAR8 *)IfrVarStore->Name, VarStoreName, NameSize);
if (IsThisVarstore ((VOID *)&IfrVarStore->Guid, VarStoreName, ConfigHdr)) {
FindVarstore = TRUE;
goto Done;
} else {
FreePool (VarStoreName);
VarStoreName = NULL;
}
break;
case EFI_IFR_VARSTORE_EFI_OP:
IfrEfiVarStore = (EFI_IFR_VARSTORE_EFI *)IfrOpHdr;
NameSize = AsciiStrSize ((CHAR8 *)IfrEfiVarStore->Name);
VarStoreName = AllocateZeroPool (NameSize * sizeof (CHAR16));
if (VarStoreName == NULL) {
goto Done;
}
AsciiStrToUnicodeStrS ((CHAR8 *)IfrEfiVarStore->Name, VarStoreName, NameSize);
if (IsThisVarstore (&IfrEfiVarStore->Guid, VarStoreName, ConfigHdr)) {
FindVarstore = TRUE;
goto Done;
} else {
FreePool (VarStoreName);
VarStoreName = NULL;
}
break;
case EFI_IFR_VARSTORE_NAME_VALUE_OP:
IfrNameValueVarStore = (EFI_IFR_VARSTORE_NAME_VALUE *)IfrOpHdr;
if (IsThisVarstore (&IfrNameValueVarStore->Guid, NULL, ConfigHdr)) {
FindVarstore = TRUE;
goto Done;
}
break;
case EFI_IFR_FORM_OP:
case EFI_IFR_FORM_MAP_OP:
//
// No matched varstore is found and directly return.
//
goto Done;
default:
break;
}
}
Done:
if (HiiFormPackage != NULL) {
FreePool (HiiFormPackage);
}
if (VarStoreName != NULL) {
FreePool (VarStoreName);
}
return FindVarstore;
}
/**
Check whether the this op code is required.
@param RequestBlockArray The array includes all the request info or NULL.
@param HiiHandle The hii handle for this form package.
@param VarStorageData The varstore data structure.
@param IfrOpHdr Ifr opcode header for this opcode.
@param VarWidth The buffer width for this opcode.
@param ReturnData The data block added for this opcode.
@param IsBitVar Whether the the opcode refers to bit storage.
@retval EFI_SUCCESS This opcode is required.
@retval EFI_NOT_FOUND This opcode is not required.
@retval Others Contain some error.
**/
EFI_STATUS
IsThisOpcodeRequired (
IN IFR_BLOCK_DATA *RequestBlockArray,
IN EFI_HII_HANDLE HiiHandle,
IN OUT IFR_VARSTORAGE_DATA *VarStorageData,
IN EFI_IFR_OP_HEADER *IfrOpHdr,
IN UINT16 VarWidth,
OUT IFR_BLOCK_DATA **ReturnData,
IN BOOLEAN IsBitVar
)
{
IFR_BLOCK_DATA *BlockData;
UINT16 VarOffset;
EFI_STRING_ID NameId;
EFI_IFR_QUESTION_HEADER *IfrQuestionHdr;
UINT16 BitOffset;
UINT16 BitWidth;
UINT16 TotalBits;
NameId = 0;
VarOffset = 0;
BitOffset = 0;
BitWidth = 0;
IfrQuestionHdr = (EFI_IFR_QUESTION_HEADER *)((CHAR8 *)IfrOpHdr + sizeof (EFI_IFR_OP_HEADER));
if (VarStorageData->Type == EFI_HII_VARSTORE_NAME_VALUE) {
NameId = IfrQuestionHdr->VarStoreInfo.VarName;
//
// Check whether this question is in requested block array.
//
if (!BlockArrayCheck (RequestBlockArray, NameId, 0, TRUE, HiiHandle)) {
//
// This question is not in the requested string. Skip it.
//
return EFI_NOT_FOUND;
}
} else {
//
// Get the byte offset/with and bit offset/width
//
if (IsBitVar) {
BitOffset = IfrQuestionHdr->VarStoreInfo.VarOffset;
BitWidth = VarWidth;
VarOffset = BitOffset / 8;
//
// Use current bit width and the bit width before current bit (with same byte offset) to calculate the byte width.
//
TotalBits = BitOffset % 8 + BitWidth;
VarWidth = (TotalBits % 8 == 0 ? TotalBits / 8 : TotalBits / 8 + 1);
} else {
VarOffset = IfrQuestionHdr->VarStoreInfo.VarOffset;
BitWidth = VarWidth;
BitOffset = VarOffset * 8;
}
//
// Check whether this question is in requested block array.
//
if (!BlockArrayCheck (RequestBlockArray, VarOffset, VarWidth, FALSE, HiiHandle)) {
//
// This question is not in the requested string. Skip it.
//
return EFI_NOT_FOUND;
}
//
// Check this var question is in the var storage
//
if (((VarOffset + VarWidth) > VarStorageData->Size)) {
return EFI_INVALID_PARAMETER;
}
}
BlockData = (IFR_BLOCK_DATA *)AllocateZeroPool (sizeof (IFR_BLOCK_DATA));
if (BlockData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
if (VarStorageData->Type == EFI_HII_VARSTORE_NAME_VALUE) {
BlockData->Name = InternalGetString (HiiHandle, NameId);
} else {
BlockData->Offset = VarOffset;
}
BlockData->Width = VarWidth;
BlockData->QuestionId = IfrQuestionHdr->QuestionId;
BlockData->OpCode = IfrOpHdr->OpCode;
BlockData->Scope = IfrOpHdr->Scope;
BlockData->IsBitVar = IsBitVar;
BlockData->BitOffset = BitOffset;
BlockData->BitWidth = BitWidth;
InitializeListHead (&BlockData->DefaultValueEntry);
//
// Add Block Data into VarStorageData BlockEntry
//
InsertBlockData (&VarStorageData->BlockEntry, &BlockData);
*ReturnData = BlockData;
return EFI_SUCCESS;
}
/**
This function parses Form Package to get the block array and the default
value array according to the request ConfigHdr.
@param HiiHandle Hii Handle for this hii package.
@param Package Pointer to the form package data.
@param PackageLength Length of the package.
@param ConfigHdr Request string ConfigHdr. If it is NULL,
the first found varstore will be as ConfigHdr.
@param RequestBlockArray The block array is retrieved from the request string.
@param VarStorageData VarStorage structure contains the got block and default value.
@param DefaultIdArray Point to the got default id and default name array.
@retval EFI_SUCCESS The block array and the default value array are got.
@retval EFI_INVALID_PARAMETER The varstore definition in the different form packages
are conflicted.
@retval EFI_OUT_OF_RESOURCES No enough memory.
**/
EFI_STATUS
EFIAPI
ParseIfrData (
IN EFI_HII_HANDLE HiiHandle,
IN UINT8 *Package,
IN UINT32 PackageLength,
IN EFI_STRING ConfigHdr,
IN IFR_BLOCK_DATA *RequestBlockArray,
IN OUT IFR_VARSTORAGE_DATA *VarStorageData,
OUT IFR_DEFAULT_DATA *DefaultIdArray
)
{
EFI_STATUS Status;
UINTN IfrOffset;
UINTN PackageOffset;
EFI_IFR_VARSTORE *IfrVarStore;
EFI_IFR_VARSTORE_EFI *IfrEfiVarStore;
EFI_IFR_VARSTORE_EFI *IfrEfiVarStoreTmp;
EFI_IFR_OP_HEADER *IfrOpHdr;
EFI_IFR_ONE_OF *IfrOneOf;
EFI_IFR_REF4 *IfrRef;
EFI_IFR_ONE_OF_OPTION *IfrOneOfOption;
EFI_IFR_DEFAULT *IfrDefault;
EFI_IFR_ORDERED_LIST *IfrOrderedList;
EFI_IFR_CHECKBOX *IfrCheckBox;
EFI_IFR_PASSWORD *IfrPassword;
EFI_IFR_STRING *IfrString;
EFI_IFR_DATE *IfrDate;
EFI_IFR_TIME *IfrTime;
IFR_DEFAULT_DATA DefaultData;
IFR_DEFAULT_DATA *DefaultDataPtr;
IFR_BLOCK_DATA *BlockData;
CHAR16 *VarStoreName;
UINTN NameSize;
UINTN NvDefaultStoreSize;
UINT16 VarWidth;
UINT16 VarDefaultId;
BOOLEAN FirstOneOfOption;
BOOLEAN FirstOrderedList;
LIST_ENTRY *LinkData;
LIST_ENTRY *LinkDefault;
EFI_IFR_VARSTORE_NAME_VALUE *IfrNameValueVarStore;
EFI_HII_PACKAGE_HEADER *PackageHeader;
EFI_VARSTORE_ID VarStoreId;
UINT16 SmallestDefaultId;
BOOLEAN SmallestIdFromFlag;
BOOLEAN FromOtherDefaultOpcode;
BOOLEAN QuestionReferBitField;
Status = EFI_SUCCESS;
BlockData = NULL;
DefaultDataPtr = NULL;
FirstOneOfOption = FALSE;
VarStoreId = 0;
FirstOrderedList = FALSE;
VarStoreName = NULL;
ZeroMem (&DefaultData, sizeof (IFR_DEFAULT_DATA));
SmallestDefaultId = 0xFFFF;
FromOtherDefaultOpcode = FALSE;
QuestionReferBitField = FALSE;
IfrEfiVarStoreTmp = NULL;
//
// Go through the form package to parse OpCode one by one.
//
PackageOffset = sizeof (EFI_HII_PACKAGE_HEADER);
PackageHeader = (EFI_HII_PACKAGE_HEADER *)Package;
IfrOffset = PackageOffset;
while (IfrOffset < PackageLength) {
//
// More than one form package found.
//
if (PackageOffset >= PackageHeader->Length) {
//
// Already found varstore for this request, break;
//
if (VarStoreId != 0) {
VarStoreId = 0;
}
//
// Get next package header info.
//
IfrOffset += sizeof (EFI_HII_PACKAGE_HEADER);
PackageOffset = sizeof (EFI_HII_PACKAGE_HEADER);
PackageHeader = (EFI_HII_PACKAGE_HEADER *)(Package + IfrOffset);
}
IfrOpHdr = (EFI_IFR_OP_HEADER *)(Package + IfrOffset);
switch (IfrOpHdr->OpCode) {
case EFI_IFR_VARSTORE_OP:
//
// VarStore is found. Don't need to search any more.
//
if (VarStoreId != 0) {
break;
}
IfrVarStore = (EFI_IFR_VARSTORE *)IfrOpHdr;
NameSize = AsciiStrSize ((CHAR8 *)IfrVarStore->Name);
VarStoreName = AllocateZeroPool (NameSize * sizeof (CHAR16));
if (VarStoreName == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
AsciiStrToUnicodeStrS ((CHAR8 *)IfrVarStore->Name, VarStoreName, NameSize);
if (IsThisVarstore ((VOID *)&IfrVarStore->Guid, VarStoreName, ConfigHdr)) {
//
// Find the matched VarStore
//
CopyGuid (&VarStorageData->Guid, (EFI_GUID *)(VOID *)&IfrVarStore->Guid);
VarStorageData->Size = IfrVarStore->Size;
VarStorageData->Name = VarStoreName;
VarStorageData->Type = EFI_HII_VARSTORE_BUFFER;
VarStoreId = IfrVarStore->VarStoreId;
} else {
FreePool (VarStoreName);
VarStoreName = NULL;
}
break;
case EFI_IFR_VARSTORE_EFI_OP:
//
// VarStore is found. Don't need to search any more.
//
if (VarStoreId != 0) {
break;
}
IfrEfiVarStore = (EFI_IFR_VARSTORE_EFI *)IfrOpHdr;
//
// If the length is small than the structure, this is from old efi
// varstore definition. Old efi varstore get config directly from
// GetVariable function.
//
if (IfrOpHdr->Length < sizeof (EFI_IFR_VARSTORE_EFI)) {
break;
}
NameSize = AsciiStrSize ((CHAR8 *)IfrEfiVarStore->Name);
VarStoreName = AllocateZeroPool (NameSize * sizeof (CHAR16));
if (VarStoreName == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
AsciiStrToUnicodeStrS ((CHAR8 *)IfrEfiVarStore->Name, VarStoreName, NameSize);
if (IfrEfiVarStoreTmp != NULL) {
FreePool (IfrEfiVarStoreTmp);
}
IfrEfiVarStoreTmp = AllocatePool (IfrEfiVarStore->Header.Length + AsciiStrSize ((CHAR8 *)IfrEfiVarStore->Name));
if (IfrEfiVarStoreTmp == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
CopyMem (IfrEfiVarStoreTmp, IfrEfiVarStore, IfrEfiVarStore->Header.Length);
AsciiStrToUnicodeStrS ((CHAR8 *)IfrEfiVarStore->Name, (CHAR16 *)&(IfrEfiVarStoreTmp->Name[0]), AsciiStrSize ((CHAR8 *)IfrEfiVarStore->Name) * sizeof (CHAR16));
if (IsThisVarstore (&IfrEfiVarStore->Guid, VarStoreName, ConfigHdr)) {
//
// Find the matched VarStore
//
CopyGuid (&VarStorageData->Guid, (EFI_GUID *)(VOID *)&IfrEfiVarStore->Guid);
VarStorageData->Size = IfrEfiVarStore->Size;
VarStorageData->Name = VarStoreName;
VarStorageData->Type = EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER;
VarStoreId = IfrEfiVarStore->VarStoreId;
} else {
FreePool (VarStoreName);
VarStoreName = NULL;
}
break;
case EFI_IFR_VARSTORE_NAME_VALUE_OP:
//
// VarStore is found. Don't need to search any more.
//
if (VarStoreId != 0) {
break;
}
IfrNameValueVarStore = (EFI_IFR_VARSTORE_NAME_VALUE *)IfrOpHdr;
if (IsThisVarstore (&IfrNameValueVarStore->Guid, NULL, ConfigHdr)) {
//
// Find the matched VarStore
//
CopyGuid (&VarStorageData->Guid, (EFI_GUID *)(VOID *)&IfrNameValueVarStore->Guid);
VarStorageData->Type = EFI_HII_VARSTORE_NAME_VALUE;
VarStoreId = IfrNameValueVarStore->VarStoreId;
}
break;
case EFI_IFR_DEFAULTSTORE_OP:
//
// Add new the map between default id and default name.
//
DefaultDataPtr = (IFR_DEFAULT_DATA *)AllocateZeroPool (sizeof (IFR_DEFAULT_DATA));
if (DefaultDataPtr == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
DefaultDataPtr->DefaultId = ((EFI_IFR_DEFAULTSTORE *)IfrOpHdr)->DefaultId;
InsertTailList (&DefaultIdArray->Entry, &DefaultDataPtr->Entry);
DefaultDataPtr = NULL;
break;
case EFI_IFR_FORM_OP:
case EFI_IFR_FORM_MAP_OP:
//
// No matched varstore is found and directly return.
//
if ( VarStoreId == 0) {
Status = EFI_SUCCESS;
goto Done;
}
break;
case EFI_IFR_REF_OP:
//
// Ref question is not in IFR Form. This IFR form is not valid.
//
if ( VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrRef = (EFI_IFR_REF4 *)IfrOpHdr;
if (IfrRef->Question.VarStoreId != VarStoreId) {
break;
}
VarWidth = (UINT16)(sizeof (EFI_HII_REF));
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, FALSE);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
break;
case EFI_IFR_ONE_OF_OP:
case EFI_IFR_NUMERIC_OP:
//
// Numeric and OneOf has the same opcode structure.
//
//
// Numeric and OneOf question is not in IFR Form. This IFR form is not valid.
//
if (VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrOneOf = (EFI_IFR_ONE_OF *)IfrOpHdr;
if (IfrOneOf->Question.VarStoreId != VarStoreId) {
break;
}
if (QuestionReferBitField) {
VarWidth = IfrOneOf->Flags & EDKII_IFR_NUMERIC_SIZE_BIT;
} else {
VarWidth = (UINT16)(1 << (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE));
}
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, QuestionReferBitField);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
//
// when go to there,BlockData can't be NULLL.
//
ASSERT (BlockData != NULL);
if (IfrOpHdr->OpCode == EFI_IFR_ONE_OF_OP) {
//
// Set this flag to TRUE for the first oneof option.
//
FirstOneOfOption = TRUE;
} else if (IfrOpHdr->OpCode == EFI_IFR_NUMERIC_OP) {
//
// Numeric minimum value will be used as default value when no default is specified.
//
DefaultData.Type = DefaultValueFromDefault;
if (QuestionReferBitField) {
//
// Since default value in bit field was stored as UINT32 type.
//
CopyMem (&DefaultData.Value.u32, &IfrOneOf->data.u32.MinValue, sizeof (UINT32));
} else {
switch (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE) {
case EFI_IFR_NUMERIC_SIZE_1:
DefaultData.Value.u8 = IfrOneOf->data.u8.MinValue;
break;
case EFI_IFR_NUMERIC_SIZE_2:
CopyMem (&DefaultData.Value.u16, &IfrOneOf->data.u16.MinValue, sizeof (UINT16));
break;
case EFI_IFR_NUMERIC_SIZE_4:
CopyMem (&DefaultData.Value.u32, &IfrOneOf->data.u32.MinValue, sizeof (UINT32));
break;
case EFI_IFR_NUMERIC_SIZE_8:
CopyMem (&DefaultData.Value.u64, &IfrOneOf->data.u64.MinValue, sizeof (UINT64));
break;
default:
Status = EFI_INVALID_PARAMETER;
goto Done;
}
}
//
// Set default value base on the DefaultId list get from IFR data.
//
NvDefaultStoreSize = PcdGetSize (PcdNvStoreDefaultValueBuffer);
for (LinkData = DefaultIdArray->Entry.ForwardLink; LinkData != &DefaultIdArray->Entry; LinkData = LinkData->ForwardLink) {
DefaultDataPtr = BASE_CR (LinkData, IFR_DEFAULT_DATA, Entry);
DefaultData.DefaultId = DefaultDataPtr->DefaultId;
if (NvDefaultStoreSize > sizeof (PCD_NV_STORE_DEFAULT_BUFFER_HEADER)) {
FindQuestionDefaultSetting (DefaultData.DefaultId, IfrEfiVarStoreTmp, &(IfrOneOf->Question), &DefaultData.Value, VarWidth, QuestionReferBitField);
}
InsertDefaultValue (BlockData, &DefaultData);
}
}
break;
case EFI_IFR_ORDERED_LIST_OP:
//
// offset by question header
// width by EFI_IFR_ORDERED_LIST MaxContainers * OneofOption Type
//
FirstOrderedList = TRUE;
//
// OrderedList question is not in IFR Form. This IFR form is not valid.
//
if (VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrOrderedList = (EFI_IFR_ORDERED_LIST *)IfrOpHdr;
if (IfrOrderedList->Question.VarStoreId != VarStoreId) {
BlockData = NULL;
break;
}
VarWidth = IfrOrderedList->MaxContainers;
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, FALSE);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
break;
case EFI_IFR_CHECKBOX_OP:
//
// EFI_IFR_DEFAULT_OP
// offset by question header
// width is 1 sizeof (BOOLEAN)
// default id by CheckBox Flags if CheckBox flags (Default or Mau) is set, the default value is 1 to be set.
// value by DefaultOption
// default id by DeaultOption DefaultId can override CheckBox Flags and Default value.
//
//
// CheckBox question is not in IFR Form. This IFR form is not valid.
//
if (VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrCheckBox = (EFI_IFR_CHECKBOX *)IfrOpHdr;
if (IfrCheckBox->Question.VarStoreId != VarStoreId) {
break;
}
VarWidth = (UINT16)sizeof (BOOLEAN);
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
if (QuestionReferBitField) {
VarWidth = 1;
}
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, QuestionReferBitField);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
//
// when go to there,BlockData can't be NULLL.
//
ASSERT (BlockData != NULL);
SmallestIdFromFlag = FALSE;
//
// Add default value for standard ID by CheckBox Flag
//
VarDefaultId = EFI_HII_DEFAULT_CLASS_STANDARD;
//
// Prepare new DefaultValue
//
DefaultData.DefaultId = VarDefaultId;
if ((IfrCheckBox->Flags & EFI_IFR_CHECKBOX_DEFAULT) == EFI_IFR_CHECKBOX_DEFAULT) {
//
// When flag is set, default value is TRUE.
//
DefaultData.Type = DefaultValueFromFlag;
if (QuestionReferBitField) {
DefaultData.Value.u32 = TRUE;
} else {
DefaultData.Value.b = TRUE;
}
InsertDefaultValue (BlockData, &DefaultData);
if (SmallestDefaultId > EFI_HII_DEFAULT_CLASS_STANDARD) {
//
// Record the SmallestDefaultId and update the SmallestIdFromFlag.
//
SmallestDefaultId = EFI_HII_DEFAULT_CLASS_STANDARD;
SmallestIdFromFlag = TRUE;
}
}
//
// Add default value for Manufacture ID by CheckBox Flag
//
VarDefaultId = EFI_HII_DEFAULT_CLASS_MANUFACTURING;
//
// Prepare new DefaultValue
//
DefaultData.DefaultId = VarDefaultId;
if ((IfrCheckBox->Flags & EFI_IFR_CHECKBOX_DEFAULT_MFG) == EFI_IFR_CHECKBOX_DEFAULT_MFG) {
//
// When flag is set, default value is TRUE.
//
DefaultData.Type = DefaultValueFromFlag;
if (QuestionReferBitField) {
DefaultData.Value.u32 = TRUE;
} else {
DefaultData.Value.b = TRUE;
}
InsertDefaultValue (BlockData, &DefaultData);
if (SmallestDefaultId > EFI_HII_DEFAULT_CLASS_MANUFACTURING) {
//
// Record the SmallestDefaultId and update the SmallestIdFromFlag.
//
SmallestDefaultId = EFI_HII_DEFAULT_CLASS_MANUFACTURING;
SmallestIdFromFlag = TRUE;
}
}
if (SmallestIdFromFlag) {
//
// When smallest default Id is given by the flag of CheckBox, set default value with TRUE for other default Id in the DefaultId list.
//
DefaultData.Type = DefaultValueFromOtherDefault;
if (QuestionReferBitField) {
DefaultData.Value.u32 = TRUE;
} else {
DefaultData.Value.b = TRUE;
}
//
// Set default value for all the default id in the DefaultId list.
//
for (LinkData = DefaultIdArray->Entry.ForwardLink; LinkData != &DefaultIdArray->Entry; LinkData = LinkData->ForwardLink) {
DefaultDataPtr = BASE_CR (LinkData, IFR_DEFAULT_DATA, Entry);
DefaultData.DefaultId = DefaultDataPtr->DefaultId;
InsertDefaultValue (BlockData, &DefaultData);
}
} else {
//
// When flag is not set, default value is FASLE.
//
DefaultData.Type = DefaultValueFromDefault;
if (QuestionReferBitField) {
DefaultData.Value.u32 = FALSE;
} else {
DefaultData.Value.b = FALSE;
}
//
// Set default value for all the default id in the DefaultId list.
//
for (LinkData = DefaultIdArray->Entry.ForwardLink; LinkData != &DefaultIdArray->Entry; LinkData = LinkData->ForwardLink) {
DefaultDataPtr = BASE_CR (LinkData, IFR_DEFAULT_DATA, Entry);
DefaultData.DefaultId = DefaultDataPtr->DefaultId;
InsertDefaultValue (BlockData, &DefaultData);
}
}
break;
case EFI_IFR_DATE_OP:
//
// offset by question header
// width MaxSize * sizeof (CHAR16)
// no default value, only block array
//
//
// Date question is not in IFR Form. This IFR form is not valid.
//
if (VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrDate = (EFI_IFR_DATE *)IfrOpHdr;
if (IfrDate->Question.VarStoreId != VarStoreId) {
break;
}
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
VarWidth = (UINT16)sizeof (EFI_HII_DATE);
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, FALSE);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
break;
case EFI_IFR_TIME_OP:
//
// offset by question header
// width MaxSize * sizeof (CHAR16)
// no default value, only block array
//
//
// Time question is not in IFR Form. This IFR form is not valid.
//
if (VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrTime = (EFI_IFR_TIME *)IfrOpHdr;
if (IfrTime->Question.VarStoreId != VarStoreId) {
break;
}
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
VarWidth = (UINT16)sizeof (EFI_HII_TIME);
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, FALSE);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
break;
case EFI_IFR_STRING_OP:
//
// offset by question header
// width MaxSize * sizeof (CHAR16)
// no default value, only block array
//
//
// String question is not in IFR Form. This IFR form is not valid.
//
if (VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrString = (EFI_IFR_STRING *)IfrOpHdr;
if (IfrString->Question.VarStoreId != VarStoreId) {
break;
}
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
VarWidth = (UINT16)(IfrString->MaxSize * sizeof (UINT16));
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, FALSE);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
break;
case EFI_IFR_PASSWORD_OP:
//
// offset by question header
// width MaxSize * sizeof (CHAR16)
// no default value, only block array
//
//
// Password question is not in IFR Form. This IFR form is not valid.
//
if (VarStoreId == 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrPassword = (EFI_IFR_PASSWORD *)IfrOpHdr;
if (IfrPassword->Question.VarStoreId != VarStoreId) {
break;
}
//
// The BlockData may allocate by other opcode,need to clean.
//
if (BlockData != NULL) {
BlockData = NULL;
}
VarWidth = (UINT16)(IfrPassword->MaxSize * sizeof (UINT16));
Status = IsThisOpcodeRequired (RequestBlockArray, HiiHandle, VarStorageData, IfrOpHdr, VarWidth, &BlockData, FALSE);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
//
// The opcode is not required,exit and parse other opcode.
//
break;
}
goto Done;
}
//
// No default value for string.
//
BlockData = NULL;
break;
case EFI_IFR_ONE_OF_OPTION_OP:
//
// No matched block data is ignored.
//
if ((BlockData == NULL) || (BlockData->Scope == 0)) {
break;
}
IfrOneOfOption = (EFI_IFR_ONE_OF_OPTION *)IfrOpHdr;
if (BlockData->OpCode == EFI_IFR_ORDERED_LIST_OP) {
if (!FirstOrderedList) {
break;
}
//
// Get ordered list option data type.
//
if ((IfrOneOfOption->Type == EFI_IFR_TYPE_NUM_SIZE_8) || (IfrOneOfOption->Type == EFI_IFR_TYPE_BOOLEAN)) {
VarWidth = 1;
} else if (IfrOneOfOption->Type == EFI_IFR_TYPE_NUM_SIZE_16) {
VarWidth = 2;
} else if (IfrOneOfOption->Type == EFI_IFR_TYPE_NUM_SIZE_32) {
VarWidth = 4;
} else if (IfrOneOfOption->Type == EFI_IFR_TYPE_NUM_SIZE_64) {
VarWidth = 8;
} else {
//
// Invalid ordered list option data type.
//
Status = EFI_INVALID_PARAMETER;
if (BlockData->Name != NULL) {
FreePool (BlockData->Name);
}
FreePool (BlockData);
goto Done;
}
//
// Calculate Ordered list QuestionId width.
//
BlockData->Width = (UINT16)(BlockData->Width * VarWidth);
//
// Check whether this question is in requested block array.
//
if (!BlockArrayCheck (RequestBlockArray, BlockData->Offset, BlockData->Width, (BOOLEAN)(BlockData->Name != NULL), HiiHandle)) {
//
// This question is not in the requested string. Skip it.
//
if (BlockData->Name != NULL) {
FreePool (BlockData->Name);
}
FreePool (BlockData);
BlockData = NULL;
break;
}
//
// Check this var question is in the var storage
//
if ((BlockData->Name == NULL) && ((BlockData->Offset + BlockData->Width) > VarStorageData->Size)) {
Status = EFI_INVALID_PARAMETER;
FreePool (BlockData);
goto Done;
}
//
// Add Block Data into VarStorageData BlockEntry
//
InsertBlockData (&VarStorageData->BlockEntry, &BlockData);
FirstOrderedList = FALSE;
break;
}
//
// 1. Set default value for OneOf option when flag field has default attribute.
// And set the default value with the smallest default id for other default id in the DefaultId list.
//
if (((IfrOneOfOption->Flags & EFI_IFR_OPTION_DEFAULT) == EFI_IFR_OPTION_DEFAULT) ||
((IfrOneOfOption->Flags & EFI_IFR_OPTION_DEFAULT_MFG) == EFI_IFR_OPTION_DEFAULT_MFG))
{
//
// This flag is used to specify whether this option is the first. Set it to FALSE for the following options.
// The first oneof option value will be used as default value when no default value is specified.
//
FirstOneOfOption = FALSE;
SmallestIdFromFlag = FALSE;
// Prepare new DefaultValue
//
DefaultData.Type = DefaultValueFromFlag;
CopyMem (&DefaultData.Value, &IfrOneOfOption->Value, IfrOneOfOption->Header.Length - OFFSET_OF (EFI_IFR_ONE_OF_OPTION, Value));
if ((IfrOneOfOption->Flags & EFI_IFR_OPTION_DEFAULT) == EFI_IFR_OPTION_DEFAULT) {
DefaultData.DefaultId = EFI_HII_DEFAULT_CLASS_STANDARD;
InsertDefaultValue (BlockData, &DefaultData);
if (SmallestDefaultId > EFI_HII_DEFAULT_CLASS_STANDARD) {
//
// Record the SmallestDefaultId and update the SmallestIdFromFlag.
//
SmallestDefaultId = EFI_HII_DEFAULT_CLASS_STANDARD;
SmallestIdFromFlag = TRUE;
}
}
if ((IfrOneOfOption->Flags & EFI_IFR_OPTION_DEFAULT_MFG) == EFI_IFR_OPTION_DEFAULT_MFG) {
DefaultData.DefaultId = EFI_HII_DEFAULT_CLASS_MANUFACTURING;
InsertDefaultValue (BlockData, &DefaultData);
if (SmallestDefaultId > EFI_HII_DEFAULT_CLASS_MANUFACTURING) {
//
// Record the SmallestDefaultId and update the SmallestIdFromFlag.
//
SmallestDefaultId = EFI_HII_DEFAULT_CLASS_MANUFACTURING;
SmallestIdFromFlag = TRUE;
}
}
if (SmallestIdFromFlag) {
//
// When smallest default Id is given by the flag of oneofOption, set this option value for other default Id in the DefaultId list.
//
DefaultData.Type = DefaultValueFromOtherDefault;
//
// Set default value for other default id in the DefaultId list.
//
for (LinkData = DefaultIdArray->Entry.ForwardLink; LinkData != &DefaultIdArray->Entry; LinkData = LinkData->ForwardLink) {
DefaultDataPtr = BASE_CR (LinkData, IFR_DEFAULT_DATA, Entry);
DefaultData.DefaultId = DefaultDataPtr->DefaultId;
InsertDefaultValue (BlockData, &DefaultData);
}
}
}
//
// 2. Set as the default value when this is the first option.
// The first oneof option value will be used as default value when no default value is specified.
//
if (FirstOneOfOption) {
// This flag is used to specify whether this option is the first. Set it to FALSE for the following options.
FirstOneOfOption = FALSE;
//
// Prepare new DefaultValue
//
DefaultData.Type = DefaultValueFromDefault;
CopyMem (&DefaultData.Value, &IfrOneOfOption->Value, IfrOneOfOption->Header.Length - OFFSET_OF (EFI_IFR_ONE_OF_OPTION, Value));
for (LinkData = DefaultIdArray->Entry.ForwardLink; LinkData != &DefaultIdArray->Entry; LinkData = LinkData->ForwardLink) {
DefaultDataPtr = BASE_CR (LinkData, IFR_DEFAULT_DATA, Entry);
DefaultData.DefaultId = DefaultDataPtr->DefaultId;
InsertDefaultValue (BlockData, &DefaultData);
}
}
break;
case EFI_IFR_DEFAULT_OP:
//
// Update Current BlockData to the default value.
//
if ((BlockData == NULL) || (BlockData->Scope == 0)) {
//
// No matched block data is ignored.
//
break;
}
//
// Get the DefaultId
//
IfrDefault = (EFI_IFR_DEFAULT *)IfrOpHdr;
VarDefaultId = IfrDefault->DefaultId;
//
// Prepare new DefaultValue
//
DefaultData.Type = DefaultValueFromOpcode;
DefaultData.DefaultId = VarDefaultId;
if (QuestionReferBitField) {
CopyMem (&DefaultData.Value.u32, &IfrDefault->Value.u32, sizeof (UINT32));
} else {
CopyMem (&DefaultData.Value, &IfrDefault->Value, IfrDefault->Header.Length - OFFSET_OF (EFI_IFR_DEFAULT, Value));
}
// If the value field is expression, set the cleaned flag.
if (IfrDefault->Type == EFI_IFR_TYPE_OTHER) {
DefaultData.Cleaned = TRUE;
}
//
// Add DefaultValue into current BlockData
//
InsertDefaultValue (BlockData, &DefaultData);
//
// Set default value for other default id in the DefaultId list.
// when SmallestDefaultId == VarDefaultId means there are two defaults with same default Id.
// If the two defaults are both from default opcode, use the first default as the default value of other default Id.
// If one from flag and the other form default opcode, use the default opcode value as the default value of other default Id.
//
if ((SmallestDefaultId > VarDefaultId) || ((SmallestDefaultId == VarDefaultId) && !FromOtherDefaultOpcode)) {
FromOtherDefaultOpcode = TRUE;
SmallestDefaultId = VarDefaultId;
for (LinkData = DefaultIdArray->Entry.ForwardLink; LinkData != &DefaultIdArray->Entry; LinkData = LinkData->ForwardLink) {
DefaultDataPtr = BASE_CR (LinkData, IFR_DEFAULT_DATA, Entry);
if (DefaultDataPtr->DefaultId != DefaultData.DefaultId) {
DefaultData.Type = DefaultValueFromOtherDefault;
DefaultData.DefaultId = DefaultDataPtr->DefaultId;
InsertDefaultValue (BlockData, &DefaultData);
}
}
}
//
// After insert the default value, reset the cleaned value for next
// time used. If not set here, need to set the value before every time.
// use it.
//
DefaultData.Cleaned = FALSE;
break;
case EFI_IFR_END_OP:
//
// End Opcode is for Var question.
//
QuestionReferBitField = FALSE;
if (BlockData != NULL) {
if (BlockData->Scope > 0) {
BlockData->Scope--;
}
if (BlockData->Scope == 0) {
BlockData = NULL;
//
// when finishing parsing a question, clean the SmallestDefaultId and GetDefaultFromDefaultOpcode.
//
SmallestDefaultId = 0xFFFF;
FromOtherDefaultOpcode = FALSE;
}
}
break;
case EFI_IFR_GUID_OP:
if (CompareGuid ((EFI_GUID *)((UINT8 *)IfrOpHdr + sizeof (EFI_IFR_OP_HEADER)), &gEdkiiIfrBitVarstoreGuid)) {
QuestionReferBitField = TRUE;
}
break;
default:
if (BlockData != NULL) {
if (BlockData->Scope > 0) {
BlockData->Scope = (UINT8)(BlockData->Scope + IfrOpHdr->Scope);
}
if (BlockData->Scope == 0) {
BlockData = NULL;
}
}
break;
}
IfrOffset += IfrOpHdr->Length;
PackageOffset += IfrOpHdr->Length;
}
//
// if Status == EFI_NOT_FOUND, just means the opcode is not required,not contain any error,
// so set the Status to EFI_SUCCESS.
//
if (Status == EFI_NOT_FOUND) {
Status = EFI_SUCCESS;
}
Done:
for (LinkData = VarStorageData->BlockEntry.ForwardLink; LinkData != &VarStorageData->BlockEntry; LinkData = LinkData->ForwardLink) {
BlockData = BASE_CR (LinkData, IFR_BLOCK_DATA, Entry);
for (LinkDefault = BlockData->DefaultValueEntry.ForwardLink; LinkDefault != &BlockData->DefaultValueEntry; ) {
DefaultDataPtr = BASE_CR (LinkDefault, IFR_DEFAULT_DATA, Entry);
LinkDefault = LinkDefault->ForwardLink;
if (DefaultDataPtr->Cleaned == TRUE) {
RemoveEntryList (&DefaultDataPtr->Entry);
FreePool (DefaultDataPtr);
}
}
}
if (IfrEfiVarStoreTmp != NULL) {
FreePool (IfrEfiVarStoreTmp);
}
return Status;
}
/**
parse the configrequest string, get the elements.
@param ConfigRequest The input configrequest string.
@param Progress Return the progress data.
@retval Block data pointer.
**/
IFR_BLOCK_DATA *
GetBlockElement (
IN EFI_STRING ConfigRequest,
OUT EFI_STRING *Progress
)
{
EFI_STRING StringPtr;
IFR_BLOCK_DATA *BlockData;
IFR_BLOCK_DATA *RequestBlockArray;
EFI_STATUS Status;
UINT8 *TmpBuffer;
UINT16 Offset;
UINT16 Width;
LIST_ENTRY *Link;
IFR_BLOCK_DATA *NextBlockData;
UINTN Length;
TmpBuffer = NULL;
//
// Init RequestBlockArray
//
RequestBlockArray = (IFR_BLOCK_DATA *)AllocateZeroPool (sizeof (IFR_BLOCK_DATA));
if (RequestBlockArray == NULL) {
goto Done;
}
InitializeListHead (&RequestBlockArray->Entry);
//
// Get the request Block array from the request string
// Offset and Width
//
//
// Parse each <RequestElement> if exists
// Only <BlockName> format is supported by this help function.
// <BlockName> ::= &'OFFSET='<Number>&'WIDTH='<Number>
//
StringPtr = ConfigRequest;
while (*StringPtr != 0 && StrnCmp (StringPtr, L"&OFFSET=", StrLen (L"&OFFSET=")) == 0) {
//
// Skip the OFFSET string
//
*Progress = StringPtr;
StringPtr += StrLen (L"&OFFSET=");
//
// Get Offset
//
Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
goto Done;
}
Offset = 0;
CopyMem (
&Offset,
TmpBuffer,
(((Length + 1) / 2) < sizeof (UINT16)) ? ((Length + 1) / 2) : sizeof (UINT16)
);
FreePool (TmpBuffer);
StringPtr += Length;
if (StrnCmp (StringPtr, L"&WIDTH=", StrLen (L"&WIDTH=")) != 0) {
goto Done;
}
StringPtr += StrLen (L"&WIDTH=");
//
// Get Width
//
Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
goto Done;
}
Width = 0;
CopyMem (
&Width,
TmpBuffer,
(((Length + 1) / 2) < sizeof (UINT16)) ? ((Length + 1) / 2) : sizeof (UINT16)
);
FreePool (TmpBuffer);
StringPtr += Length;
if ((*StringPtr != 0) && (*StringPtr != L'&')) {
goto Done;
}
//
// Set Block Data
//
BlockData = (IFR_BLOCK_DATA *)AllocateZeroPool (sizeof (IFR_BLOCK_DATA));
if (BlockData == NULL) {
goto Done;
}
BlockData->Offset = Offset;
BlockData->Width = Width;
InsertBlockData (&RequestBlockArray->Entry, &BlockData);
//
// Skip &VALUE string if &VALUE does exists.
//
if (StrnCmp (StringPtr, L"&VALUE=", StrLen (L"&VALUE=")) == 0) {
StringPtr += StrLen (L"&VALUE=");
//
// Get Value
//
Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
goto Done;
}
FreePool (TmpBuffer);
StringPtr += Length;
if ((*StringPtr != 0) && (*StringPtr != L'&')) {
goto Done;
}
}
//
// If '\0', parsing is finished.
//
if (*StringPtr == 0) {
break;
}
}
//
// Merge the requested block data.
//
Link = RequestBlockArray->Entry.ForwardLink;
while ((Link != &RequestBlockArray->Entry) && (Link->ForwardLink != &RequestBlockArray->Entry)) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
NextBlockData = BASE_CR (Link->ForwardLink, IFR_BLOCK_DATA, Entry);
if ((NextBlockData->Offset >= BlockData->Offset) && (NextBlockData->Offset <= (BlockData->Offset + BlockData->Width))) {
if ((NextBlockData->Offset + NextBlockData->Width) > (BlockData->Offset + BlockData->Width)) {
BlockData->Width = (UINT16)(NextBlockData->Offset + NextBlockData->Width - BlockData->Offset);
}
RemoveEntryList (Link->ForwardLink);
FreePool (NextBlockData);
continue;
}
Link = Link->ForwardLink;
}
return RequestBlockArray;
Done:
if (RequestBlockArray != NULL) {
//
// Free Link Array RequestBlockArray
//
while (!IsListEmpty (&RequestBlockArray->Entry)) {
BlockData = BASE_CR (RequestBlockArray->Entry.ForwardLink, IFR_BLOCK_DATA, Entry);
RemoveEntryList (&BlockData->Entry);
FreePool (BlockData);
}
FreePool (RequestBlockArray);
}
return NULL;
}
/**
parse the configrequest string, get the elements.
@param ConfigRequest The input config request string.
@param Progress Return the progress data.
@retval return data block array.
**/
IFR_BLOCK_DATA *
GetNameElement (
IN EFI_STRING ConfigRequest,
OUT EFI_STRING *Progress
)
{
EFI_STRING StringPtr;
EFI_STRING NextTag;
IFR_BLOCK_DATA *BlockData;
IFR_BLOCK_DATA *RequestBlockArray;
BOOLEAN HasValue;
StringPtr = ConfigRequest;
//
// Init RequestBlockArray
//
RequestBlockArray = (IFR_BLOCK_DATA *)AllocateZeroPool (sizeof (IFR_BLOCK_DATA));
if (RequestBlockArray == NULL) {
goto Done;
}
InitializeListHead (&RequestBlockArray->Entry);
//
// Get the request Block array from the request string
//
//
// Parse each <RequestElement> if exists
// Only <BlockName> format is supported by this help function.
// <BlockName> ::= &'Name***=***
//
while (StringPtr != NULL && *StringPtr == L'&') {
*Progress = StringPtr;
//
// Skip the L"&" string
//
StringPtr += 1;
HasValue = FALSE;
if ((NextTag = StrStr (StringPtr, L"=")) != NULL) {
*NextTag = L'\0';
HasValue = TRUE;
} else if ((NextTag = StrStr (StringPtr, L"&")) != NULL) {
*NextTag = L'\0';
}
//
// Set Block Data
//
BlockData = (IFR_BLOCK_DATA *)AllocateZeroPool (sizeof (IFR_BLOCK_DATA));
if (BlockData == NULL) {
goto Done;
}
//
// Get Name
//
BlockData->Name = AllocateCopyPool (StrSize (StringPtr), StringPtr);
InsertBlockData (&RequestBlockArray->Entry, &BlockData);
if (HasValue) {
//
// If has value, skip the value.
//
StringPtr = NextTag + 1;
*NextTag = L'=';
StringPtr = StrStr (StringPtr, L"&");
} else if (NextTag != NULL) {
//
// restore the '&' text.
//
StringPtr = NextTag;
*NextTag = L'&';
}
}
return RequestBlockArray;
Done:
if (RequestBlockArray != NULL) {
//
// Free Link Array RequestBlockArray
//
while (!IsListEmpty (&RequestBlockArray->Entry)) {
BlockData = BASE_CR (RequestBlockArray->Entry.ForwardLink, IFR_BLOCK_DATA, Entry);
RemoveEntryList (&BlockData->Entry);
if (BlockData->Name != NULL) {
FreePool (BlockData->Name);
}
FreePool (BlockData);
}
FreePool (RequestBlockArray);
}
return NULL;
}
/**
Generate ConfigRequest string base on the varstore info.
@param ConfigHdr The config header for this varstore.
@param VarStorageData The varstore info.
@param Status Return Status.
@param ConfigRequest The ConfigRequest info may be return.
@retval TRUE Need to continue
@retval Others NO need to continue or error occur.
**/
BOOLEAN
GenerateConfigRequest (
IN CHAR16 *ConfigHdr,
IN IFR_VARSTORAGE_DATA *VarStorageData,
OUT EFI_STATUS *Status,
IN OUT EFI_STRING *ConfigRequest
)
{
BOOLEAN DataExist;
UINTN Length;
LIST_ENTRY *Link;
CHAR16 *FullConfigRequest;
CHAR16 *StringPtr;
IFR_BLOCK_DATA *BlockData;
//
// Append VarStorageData BlockEntry into *Request string
// Now support only one varstore in a form package.
//
//
// Go through all VarStorageData Entry and get BlockEntry for each one for the multiple varstore in a single form package
// Then construct them all to return MultiRequest string : ConfigHdr BlockConfig
//
//
// Compute the length of the entire request starting with <ConfigHdr> and a
// Null-terminator
//
DataExist = FALSE;
Length = StrLen (ConfigHdr) + 1;
for (Link = VarStorageData->BlockEntry.ForwardLink; Link != &VarStorageData->BlockEntry; Link = Link->ForwardLink) {
DataExist = TRUE;
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if (VarStorageData->Type == EFI_HII_VARSTORE_NAME_VALUE) {
//
// Add <BlockName> length for each Name
//
// <BlockName> ::= &Name1&Name2&...
// |1| StrLen(Name1)
//
Length = Length + (1 + StrLen (BlockData->Name));
} else {
//
// Add <BlockName> length for each Offset/Width pair
//
// <BlockName> ::= &OFFSET=1234&WIDTH=1234
// | 8 | 4 | 7 | 4 |
//
Length = Length + (8 + 4 + 7 + 4);
}
}
//
// No any request block data is found. The request string can't be constructed.
//
if (!DataExist) {
*Status = EFI_SUCCESS;
return FALSE;
}
//
// Allocate buffer for the entire <ConfigRequest>
//
FullConfigRequest = AllocateZeroPool (Length * sizeof (CHAR16));
if (FullConfigRequest == NULL) {
*Status = EFI_OUT_OF_RESOURCES;
return FALSE;
}
StringPtr = FullConfigRequest;
//
// Start with <ConfigHdr>
//
StrCpyS (StringPtr, Length, ConfigHdr);
StringPtr += StrLen (StringPtr);
//
// Loop through all the Offset/Width pairs and append them to ConfigRequest
//
for (Link = VarStorageData->BlockEntry.ForwardLink; Link != &VarStorageData->BlockEntry; Link = Link->ForwardLink) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if (VarStorageData->Type == EFI_HII_VARSTORE_NAME_VALUE) {
//
// Append &Name1\0
//
UnicodeSPrint (
StringPtr,
(1 + StrLen (BlockData->Name) + 1) * sizeof (CHAR16),
L"&%s",
BlockData->Name
);
} else {
//
// Append &OFFSET=XXXX&WIDTH=YYYY\0
//
UnicodeSPrint (
StringPtr,
(8 + 4 + 7 + 4 + 1) * sizeof (CHAR16),
L"&OFFSET=%04X&WIDTH=%04X",
BlockData->Offset,
BlockData->Width
);
}
StringPtr += StrLen (StringPtr);
}
//
// Set to the got full request string.
//
HiiToLower (FullConfigRequest);
if (*ConfigRequest != NULL) {
FreePool (*ConfigRequest);
}
*ConfigRequest = FullConfigRequest;
return TRUE;
}
/**
Generate ConfigRequest Header base on the varstore info.
@param VarStorageData The varstore info.
@param DevicePath Device path for this varstore.
@param ConfigHdr The config header for this varstore.
@retval EFI_SUCCESS Generate the header success.
@retval EFI_OUT_OF_RESOURCES Allocate buffer fail.
**/
EFI_STATUS
GenerateHdr (
IN IFR_VARSTORAGE_DATA *VarStorageData,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT EFI_STRING *ConfigHdr
)
{
EFI_STRING GuidStr;
EFI_STRING NameStr;
EFI_STRING PathStr;
UINTN Length;
EFI_STATUS Status;
Status = EFI_SUCCESS;
NameStr = NULL;
GuidStr = NULL;
PathStr = NULL;
//
// Construct <ConfigHdr> : "GUID=...&NAME=...&PATH=..." by VarStorageData Guid, Name and DriverHandle
//
GenerateSubStr (L"GUID=", sizeof (EFI_GUID), (VOID *)&VarStorageData->Guid, 1, &GuidStr);
if (VarStorageData->Name != NULL) {
GenerateSubStr (L"NAME=", StrLen (VarStorageData->Name) * sizeof (CHAR16), (VOID *)VarStorageData->Name, 2, &NameStr);
} else {
GenerateSubStr (L"NAME=", 0, NULL, 2, &NameStr);
}
GenerateSubStr (
L"PATH=",
GetDevicePathSize ((EFI_DEVICE_PATH_PROTOCOL *)DevicePath),
(VOID *)DevicePath,
1,
&PathStr
);
Length = StrLen (GuidStr) + StrLen (NameStr) + StrLen (PathStr) + 1;
if (VarStorageData->Name == NULL) {
Length += 1;
}
*ConfigHdr = AllocateZeroPool (Length * sizeof (CHAR16));
if (*ConfigHdr == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
StrCpyS (*ConfigHdr, Length, GuidStr);
StrCatS (*ConfigHdr, Length, NameStr);
if (VarStorageData->Name == NULL) {
StrCatS (*ConfigHdr, Length, L"&");
}
StrCatS (*ConfigHdr, Length, PathStr);
//
// Remove the last character L'&'
//
*(*ConfigHdr + StrLen (*ConfigHdr) - 1) = L'\0';
Done:
if (GuidStr != NULL) {
FreePool (GuidStr);
}
if (NameStr != NULL) {
FreePool (NameStr);
}
if (PathStr != NULL) {
FreePool (PathStr);
}
return Status;
}
/**
Update the default value in the block data which is used as bit var store.
For example:
A question value saved in a bit fied: bitoffset = 1; bitwidth = 2;default value = 1.
And corresponding block data info: offset==0; width==1;currently the default value
is saved as 1.Actually the default value 1 need to be set to bit field 1, so the
default value of this block data shuold be:2.
typedef struct {
UINT8 Bit1 : 1; //
UINT8 Bit2 : 2; // Question saved in Bit2,so originalBlock info: offset = 0; width = 1;(byte level) defaul = 1.
// (default value record for the bit field)
......
}ExampleData;
After function UpdateDefaultValue,the Block info is: offset = 0; width = 1;(byte level) default = 2.
(default value record for the Block)
UpdateDefaultValue function update default value of bit var block based on the bit field info in the block.
@param BlockLink The Link of the block data.
**/
VOID
UpdateDefaultValue (
IN LIST_ENTRY *BlockLink
)
{
LIST_ENTRY *Link;
LIST_ENTRY *ListEntry;
LIST_ENTRY *LinkDefault;
IFR_BLOCK_DATA *BlockData;
IFR_DEFAULT_DATA *DefaultValueData;
UINTN StartBit;
UINTN EndBit;
UINT32 BitFieldDefaultValue;
for ( Link = BlockLink->ForwardLink; Link != BlockLink; Link = Link->ForwardLink) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if (!BlockData->IsBitVar) {
continue;
}
ListEntry = &BlockData->DefaultValueEntry;
//
// Update the default value in the block data with all existing default id.
//
for (LinkDefault = ListEntry->ForwardLink; LinkDefault != ListEntry; LinkDefault = LinkDefault->ForwardLink) {
//
// Get the default data, and the value of the default data is for some field in the block.
// Note: Default value for bit field question is stored as UINT32.
//
DefaultValueData = BASE_CR (LinkDefault, IFR_DEFAULT_DATA, Entry);
BitFieldDefaultValue = DefaultValueData->Value.u32;
StartBit = BlockData->BitOffset % 8;
EndBit = StartBit + BlockData->BitWidth - 1;
//
// Set the bit field default value to related bit filed, then we will got the new default vaule for the block data.
//
DefaultValueData->Value.u32 = BitFieldWrite32 (0, StartBit, EndBit, BitFieldDefaultValue);
}
}
}
/**
Merge the default value in two block datas which have overlap region.
For bit fields, their related block data may have overlap region, such as:
typedef struct {
UINT16 Bit1 : 6; // Question1 refer Bit1, Block1: offset = 0; width = 1;(byte level) default = 1
UINT16 Bit2 : 5; // Question2 refer Bit2, Block2: offset = 0; width = 2;(byte level) default = 5
// (default value record for the bit field)
......
}ExampleData;
After function UpdateDefaultValue:
Block1: offset = 0; width = 1;(byte level) default = 1
Block2: offset = 0; width = 2;(byte level) default = 320 (5 * (2 << 6))
(default value record for block)
After function MergeBlockDefaultValue:
Block1: offset = 0; width = 1;(byte level) default = 65
Block2: offset = 0; width = 2;(byte level) default = 321
(Block1 and Block2 has overlap region, merge the overlap value to Block1 and Blcok2)
Block1 and Block2 have overlap byte region, but currntly the default value of Block1 only contains
value of Bit1 (low 6 bits),the default value of Block2 only contains the value of Bit2 (middle 5 bits).
This fuction merge the default value of these two blocks, and make the default value of block1
also contain the value of lower 2 bits of the Bit2. And make the default value of Block2 also
contain the default value of Bit1.
We can get the total value of the whole block that just cover these two blocks(in this case is:
block: offset =0; width =2;) then the value of block2 is same as block, the value of block1 is
the first byte value of block.
@param FirstBlock Point to the block date whose default value need to be merged.
@param SecondBlock Point to the block date whose default value need to be merged.
**/
VOID
MergeBlockDefaultValue (
IN OUT IFR_BLOCK_DATA *FirstBlock,
IN OUT IFR_BLOCK_DATA *SecondBlock
)
{
LIST_ENTRY *FirstListEntry;
LIST_ENTRY *SecondListEntry;
LIST_ENTRY *FirstDefaultLink;
LIST_ENTRY *SecondDefaultLink;
IFR_DEFAULT_DATA *FirstDefaultValueData;
IFR_DEFAULT_DATA *SecondDefaultValueData;
UINT32 *FirstDefaultValue;
UINT32 *SecondDefaultValue;
UINT64 TotalValue;
UINT64 ShiftedValue;
UINT16 OffsetShift;
FirstListEntry = &FirstBlock->DefaultValueEntry;
for (FirstDefaultLink = FirstListEntry->ForwardLink; FirstDefaultLink != FirstListEntry; FirstDefaultLink = FirstDefaultLink->ForwardLink) {
FirstDefaultValueData = BASE_CR (FirstDefaultLink, IFR_DEFAULT_DATA, Entry);
SecondListEntry = &SecondBlock->DefaultValueEntry;
for (SecondDefaultLink = SecondListEntry->ForwardLink; SecondDefaultLink != SecondListEntry; SecondDefaultLink = SecondDefaultLink->ForwardLink) {
SecondDefaultValueData = BASE_CR (SecondDefaultLink, IFR_DEFAULT_DATA, Entry);
if (FirstDefaultValueData->DefaultId != SecondDefaultValueData->DefaultId) {
continue;
}
//
// Find default value with same default id in the two blocks.
// Note: Default value for bit field question is stored as UINT32 type.
//
FirstDefaultValue = &FirstDefaultValueData->Value.u32;
SecondDefaultValue = &SecondDefaultValueData->Value.u32;
//
// 1. Get the default value of the whole blcok that can just cover FirstBlock and SecondBlock.
// 2. Get the default value of FirstBlock and SecondBlock form the value of whole block based
// on the offset and width of FirstBlock and SecondBlock.
//
if (FirstBlock->Offset > SecondBlock->Offset) {
OffsetShift = FirstBlock->Offset - SecondBlock->Offset;
ShiftedValue = LShiftU64 ((UINT64)(*FirstDefaultValue), OffsetShift * 8);
TotalValue = ShiftedValue | (UINT64)(*SecondDefaultValue);
*SecondDefaultValue = (UINT32)BitFieldRead64 (TotalValue, 0, SecondBlock->Width * 8 -1);
*FirstDefaultValue = (UINT32)BitFieldRead64 (TotalValue, OffsetShift * 8, OffsetShift * 8 + FirstBlock->Width *8 -1);
} else {
OffsetShift = SecondBlock->Offset -FirstBlock->Offset;
ShiftedValue = LShiftU64 ((UINT64)(*SecondDefaultValue), OffsetShift * 8);
TotalValue = ShiftedValue | (UINT64)(*FirstDefaultValue);
*FirstDefaultValue = (UINT32)BitFieldRead64 (TotalValue, 0, FirstBlock->Width * 8 -1);
*SecondDefaultValue = (UINT32)BitFieldRead64 (TotalValue, OffsetShift * 8, OffsetShift * 8 + SecondBlock->Width *8 -1);
}
}
}
}
/**
Update the default value in the block data which used as Bit VarStore
@param BlockLink The Link of the block data.
**/
VOID
UpdateBlockDataArray (
IN LIST_ENTRY *BlockLink
)
{
LIST_ENTRY *Link;
LIST_ENTRY *TempLink;
IFR_BLOCK_DATA *BlockData;
IFR_BLOCK_DATA *NextBlockData;
//
// 1. Update default value in BitVar block data.
// Sine some block datas are used as BitVarStore, then the default value recored in the block
// is for related bit field in the block. so we need to set the default value to the related bit
// fields in the block data if the block data is used as bit varstore, then the default value of
// the block will be updated.
//
UpdateDefaultValue (BlockLink);
//
// 2.Update default value for overlap BitVar blcok datas.
// For block datas have overlap region, we need to merge the default value in different blocks.
//
for (Link = BlockLink->ForwardLink; Link != BlockLink; Link = Link->ForwardLink) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if (!BlockData->IsBitVar) {
continue;
}
for (TempLink = Link->ForwardLink; TempLink != BlockLink; TempLink = TempLink->ForwardLink) {
NextBlockData = BASE_CR (TempLink, IFR_BLOCK_DATA, Entry);
if (!NextBlockData->IsBitVar || (NextBlockData->Offset >= BlockData->Offset + BlockData->Width) || (BlockData->Offset >= NextBlockData->Offset + NextBlockData->Width)) {
continue;
}
//
// Find two blocks are used as bit VarStore and have overlap region, so need to merge default value of these two blocks.
//
MergeBlockDefaultValue (BlockData, NextBlockData);
}
}
}
/**
Generate ConfigAltResp string base on the varstore info.
@param HiiHandle Hii Handle for this hii package.
@param ConfigHdr The config header for this varstore.
@param VarStorageData The varstore info.
@param DefaultIdArray The Default id array.
@param DefaultAltCfgResp The DefaultAltCfgResp info may be return.
@retval TRUE Need to continue
@retval Others NO need to continue or error occur.
**/
EFI_STATUS
GenerateAltConfigResp (
IN EFI_HII_HANDLE HiiHandle,
IN CHAR16 *ConfigHdr,
IN IFR_VARSTORAGE_DATA *VarStorageData,
IN IFR_DEFAULT_DATA *DefaultIdArray,
IN OUT EFI_STRING *DefaultAltCfgResp
)
{
BOOLEAN DataExist;
UINTN Length;
LIST_ENTRY *Link;
LIST_ENTRY *LinkData;
LIST_ENTRY *LinkDefault;
LIST_ENTRY *ListEntry;
CHAR16 *StringPtr;
IFR_BLOCK_DATA *BlockData;
IFR_DEFAULT_DATA *DefaultId;
IFR_DEFAULT_DATA *DefaultValueData;
UINTN Width;
UINT8 *TmpBuffer;
CHAR16 *DefaultString;
UINTN StrSize;
BlockData = NULL;
DataExist = FALSE;
DefaultString = NULL;
//
// Add length for <ConfigHdr> + '\0'
//
Length = StrLen (ConfigHdr) + 1;
UpdateBlockDataArray (&VarStorageData->BlockEntry);
for (Link = DefaultIdArray->Entry.ForwardLink; Link != &DefaultIdArray->Entry; Link = Link->ForwardLink) {
DefaultId = BASE_CR (Link, IFR_DEFAULT_DATA, Entry);
//
// Add length for "&<ConfigHdr>&ALTCFG=XXXX"
// |1| StrLen (ConfigHdr) | 8 | 4 |
//
Length += (1 + StrLen (ConfigHdr) + 8 + 4);
for (LinkData = VarStorageData->BlockEntry.ForwardLink; LinkData != &VarStorageData->BlockEntry; LinkData = LinkData->ForwardLink) {
BlockData = BASE_CR (LinkData, IFR_BLOCK_DATA, Entry);
ListEntry = &BlockData->DefaultValueEntry;
for (LinkDefault = ListEntry->ForwardLink; LinkDefault != ListEntry; LinkDefault = LinkDefault->ForwardLink) {
DefaultValueData = BASE_CR (LinkDefault, IFR_DEFAULT_DATA, Entry);
if (DefaultValueData->DefaultId != DefaultId->DefaultId) {
continue;
}
if (VarStorageData->Type == EFI_HII_VARSTORE_NAME_VALUE) {
//
// Add length for "&Name1=zzzzzzzzzzzz"
// |1|Name|1|Value|
//
Length += (1 + StrLen (BlockData->Name) + 1 + BlockData->Width * 2);
} else {
//
// Add length for "&OFFSET=XXXX&WIDTH=YYYY&VALUE=zzzzzzzzzzzz"
// | 8 | 4 | 7 | 4 | 7 | Width * 2 |
//
Length += (8 + 4 + 7 + 4 + 7 + BlockData->Width * 2);
}
DataExist = TRUE;
}
}
}
//
// No default value is found. The default string doesn't exist.
//
if (!DataExist) {
return EFI_SUCCESS;
}
//
// Allocate buffer for the entire <DefaultAltCfgResp>
//
*DefaultAltCfgResp = AllocateZeroPool (Length * sizeof (CHAR16));
if (*DefaultAltCfgResp == NULL) {
return EFI_OUT_OF_RESOURCES;
}
StringPtr = *DefaultAltCfgResp;
//
// Start with <ConfigHdr>
//
StrCpyS (StringPtr, Length, ConfigHdr);
StringPtr += StrLen (StringPtr);
for (Link = DefaultIdArray->Entry.ForwardLink; Link != &DefaultIdArray->Entry; Link = Link->ForwardLink) {
DefaultId = BASE_CR (Link, IFR_DEFAULT_DATA, Entry);
//
// Add <AltConfigHdr> of the form "&<ConfigHdr>&ALTCFG=XXXX\0"
// |1| StrLen (ConfigHdr) | 8 | 4 |
//
UnicodeSPrint (
StringPtr,
(1 + StrLen (ConfigHdr) + 8 + 4 + 1) * sizeof (CHAR16),
L"&%s&ALTCFG=%04X",
ConfigHdr,
DefaultId->DefaultId
);
StringPtr += StrLen (StringPtr);
for (LinkData = VarStorageData->BlockEntry.ForwardLink; LinkData != &VarStorageData->BlockEntry; LinkData = LinkData->ForwardLink) {
BlockData = BASE_CR (LinkData, IFR_BLOCK_DATA, Entry);
ListEntry = &BlockData->DefaultValueEntry;
for (LinkDefault = ListEntry->ForwardLink; LinkDefault != ListEntry; LinkDefault = LinkDefault->ForwardLink) {
DefaultValueData = BASE_CR (LinkDefault, IFR_DEFAULT_DATA, Entry);
if (DefaultValueData->DefaultId != DefaultId->DefaultId) {
continue;
}
if (VarStorageData->Type == EFI_HII_VARSTORE_NAME_VALUE) {
UnicodeSPrint (
StringPtr,
(1 + StrLen (ConfigHdr) + 1) * sizeof (CHAR16),
L"&%s=",
BlockData->Name
);
StringPtr += StrLen (StringPtr);
} else {
//
// Add <BlockConfig>
// <BlockConfig> ::= 'OFFSET='<Number>&'WIDTH='<Number>&'VALUE'=<Number>
//
UnicodeSPrint (
StringPtr,
(8 + 4 + 7 + 4 + 7 + 1) * sizeof (CHAR16),
L"&OFFSET=%04X&WIDTH=%04X&VALUE=",
BlockData->Offset,
BlockData->Width
);
StringPtr += StrLen (StringPtr);
}
Width = BlockData->Width;
//
// Convert Value to a hex string in "%x" format
// NOTE: This is in the opposite byte that GUID and PATH use
//
if (BlockData->OpCode == EFI_IFR_STRING_OP) {
DefaultString = InternalGetString (HiiHandle, DefaultValueData->Value.string);
TmpBuffer = AllocateZeroPool (Width);
ASSERT (TmpBuffer != NULL);
if (DefaultString != NULL) {
StrSize = StrLen (DefaultString)* sizeof (CHAR16);
if (StrSize > Width) {
StrSize = Width;
}
CopyMem (TmpBuffer, (UINT8 *)DefaultString, StrSize);
}
} else {
TmpBuffer = (UINT8 *)&(DefaultValueData->Value);
}
for ( ; Width > 0 && (TmpBuffer != NULL); Width--) {
UnicodeValueToStringS (
StringPtr,
Length * sizeof (CHAR16) - ((UINTN)StringPtr - (UINTN)*DefaultAltCfgResp),
PREFIX_ZERO | RADIX_HEX,
TmpBuffer[Width - 1],
2
);
StringPtr += StrnLenS (StringPtr, Length - ((UINTN)StringPtr - (UINTN)*DefaultAltCfgResp) / sizeof (CHAR16));
}
if (DefaultString != NULL) {
FreePool (DefaultString);
DefaultString = NULL;
}
if ((BlockData->OpCode == EFI_IFR_STRING_OP) && (TmpBuffer != NULL)) {
FreePool (TmpBuffer);
TmpBuffer = NULL;
}
}
}
}
HiiToLower (*DefaultAltCfgResp);
return EFI_SUCCESS;
}
/**
This function gets the full request string and full default value string by
parsing IFR data in HII form packages.
When Request points to NULL string, the request string and default value string
for each varstore in form package will return.
@param DataBaseRecord The DataBaseRecord instance contains the found Hii handle and package.
@param DevicePath Device Path which Hii Config Access Protocol is registered.
@param Request Pointer to a null-terminated Unicode string in
<ConfigRequest> format. When it doesn't contain
any RequestElement, it will be updated to return
the full RequestElement retrieved from IFR data.
If it points to NULL, the request string for the first
varstore in form package will be merged into a
<MultiConfigRequest> format string and return.
@param AltCfgResp Pointer to a null-terminated Unicode string in
<ConfigAltResp> format. When the pointer is to NULL,
the full default value string retrieved from IFR data
will return. When the pinter is to a string, the
full default value string retrieved from IFR data
will be merged into the input string and return.
When Request points to NULL, the default value string
for each varstore in form package will be merged into
a <MultiConfigAltResp> format string and return.
@param PointerProgress Optional parameter, it can be NULL.
When it is not NULL, if Request is NULL, it returns NULL.
On return, points to a character in the Request
string. Points to the string's null terminator if
request was successful. Points to the most recent
& before the first failing name / value pair (or
the beginning of the string if the failure is in
the first name / value pair) if the request was
not successful.
@retval EFI_SUCCESS The Results string is set to the full request string.
And AltCfgResp contains all default value string.
@retval EFI_OUT_OF_RESOURCES Not enough memory for the return string.
@retval EFI_NOT_FOUND The varstore (Guid and Name) in Request string
can't be found in Form package.
@retval EFI_NOT_FOUND HiiPackage can't be got on the input HiiHandle.
@retval EFI_INVALID_PARAMETER Request points to NULL.
**/
EFI_STATUS
EFIAPI
GetFullStringFromHiiFormPackages (
IN HII_DATABASE_RECORD *DataBaseRecord,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN OUT EFI_STRING *Request,
IN OUT EFI_STRING *AltCfgResp,
OUT EFI_STRING *PointerProgress OPTIONAL
)
{
EFI_STATUS Status;
UINT8 *HiiFormPackage;
UINTN PackageSize;
IFR_BLOCK_DATA *RequestBlockArray;
IFR_BLOCK_DATA *BlockData;
IFR_DEFAULT_DATA *DefaultValueData;
IFR_DEFAULT_DATA *DefaultId;
IFR_DEFAULT_DATA *DefaultIdArray;
IFR_VARSTORAGE_DATA *VarStorageData;
EFI_STRING DefaultAltCfgResp;
EFI_STRING ConfigHdr;
EFI_STRING StringPtr;
EFI_STRING Progress;
if ((DataBaseRecord == NULL) || (DevicePath == NULL) || (Request == NULL) || (AltCfgResp == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Initialize the local variables.
//
RequestBlockArray = NULL;
DefaultIdArray = NULL;
VarStorageData = NULL;
DefaultAltCfgResp = NULL;
ConfigHdr = NULL;
HiiFormPackage = NULL;
PackageSize = 0;
Progress = *Request;
Status = GetFormPackageData (DataBaseRecord, &HiiFormPackage, &PackageSize);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// 1. Get the request block array by Request String when Request string contains the block array.
//
StringPtr = NULL;
if (*Request != NULL) {
StringPtr = *Request;
//
// Jump <ConfigHdr>
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
StringPtr += StrLen (L"GUID=");
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&NAME=", StrLen (L"&NAME=")) != 0) {
StringPtr++;
}
if (*StringPtr == L'\0') {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
StringPtr += StrLen (L"&NAME=");
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&PATH=", StrLen (L"&PATH=")) != 0) {
StringPtr++;
}
if (*StringPtr == L'\0') {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
StringPtr += StrLen (L"&PATH=");
while (*StringPtr != L'\0' && *StringPtr != L'&') {
StringPtr++;
}
if (*StringPtr == L'\0') {
//
// No request block is found.
//
StringPtr = NULL;
}
}
//
// If StringPtr != NULL, get the request elements.
//
if (StringPtr != NULL) {
if (StrStr (StringPtr, L"&OFFSET=") != NULL) {
RequestBlockArray = GetBlockElement (StringPtr, &Progress);
} else {
RequestBlockArray = GetNameElement (StringPtr, &Progress);
}
if (RequestBlockArray == NULL) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
}
//
// Initialize DefaultIdArray to store the map between DeaultId and DefaultName
//
DefaultIdArray = (IFR_DEFAULT_DATA *)AllocateZeroPool (sizeof (IFR_DEFAULT_DATA));
if (DefaultIdArray == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
InitializeListHead (&DefaultIdArray->Entry);
//
// Initialize VarStorageData to store the var store Block and Default value information.
//
VarStorageData = (IFR_VARSTORAGE_DATA *)AllocateZeroPool (sizeof (IFR_VARSTORAGE_DATA));
if (VarStorageData == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
InitializeListHead (&VarStorageData->Entry);
InitializeListHead (&VarStorageData->BlockEntry);
//
// 2. Parse FormPackage to get BlockArray and DefaultId Array for the request BlockArray.
//
//
// Parse the opcode in form package to get the default setting.
//
Status = ParseIfrData (
DataBaseRecord->Handle,
HiiFormPackage,
(UINT32)PackageSize,
*Request,
RequestBlockArray,
VarStorageData,
DefaultIdArray
);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// No requested varstore in IFR data and directly return
//
if ((VarStorageData->Type == 0) && (VarStorageData->Name == NULL)) {
Status = EFI_SUCCESS;
goto Done;
}
//
// 3. Construct Request Element (Block Name) for 2.1 and 2.2 case.
//
Status = GenerateHdr (VarStorageData, DevicePath, &ConfigHdr);
if (EFI_ERROR (Status)) {
goto Done;
}
if (RequestBlockArray == NULL) {
if (!GenerateConfigRequest (ConfigHdr, VarStorageData, &Status, Request)) {
goto Done;
}
}
//
// 4. Construct Default Value string in AltResp according to request element.
// Go through all VarStorageData Entry and get the DefaultId array for each one
// Then construct them all to : ConfigHdr AltConfigHdr ConfigBody AltConfigHdr ConfigBody
//
Status = GenerateAltConfigResp (DataBaseRecord->Handle, ConfigHdr, VarStorageData, DefaultIdArray, &DefaultAltCfgResp);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// 5. Merge string into the input AltCfgResp if the input *AltCfgResp is not NULL.
//
if ((*AltCfgResp != NULL) && (DefaultAltCfgResp != NULL)) {
Status = MergeDefaultString (AltCfgResp, DefaultAltCfgResp);
FreePool (DefaultAltCfgResp);
} else if (*AltCfgResp == NULL) {
*AltCfgResp = DefaultAltCfgResp;
}
Done:
if (RequestBlockArray != NULL) {
//
// Free Link Array RequestBlockArray
//
while (!IsListEmpty (&RequestBlockArray->Entry)) {
BlockData = BASE_CR (RequestBlockArray->Entry.ForwardLink, IFR_BLOCK_DATA, Entry);
RemoveEntryList (&BlockData->Entry);
if (BlockData->Name != NULL) {
FreePool (BlockData->Name);
}
FreePool (BlockData);
}
FreePool (RequestBlockArray);
}
if (VarStorageData != NULL) {
//
// Free link array VarStorageData
//
while (!IsListEmpty (&VarStorageData->BlockEntry)) {
BlockData = BASE_CR (VarStorageData->BlockEntry.ForwardLink, IFR_BLOCK_DATA, Entry);
RemoveEntryList (&BlockData->Entry);
if (BlockData->Name != NULL) {
FreePool (BlockData->Name);
}
//
// Free default value link array
//
while (!IsListEmpty (&BlockData->DefaultValueEntry)) {
DefaultValueData = BASE_CR (BlockData->DefaultValueEntry.ForwardLink, IFR_DEFAULT_DATA, Entry);
RemoveEntryList (&DefaultValueData->Entry);
FreePool (DefaultValueData);
}
FreePool (BlockData);
}
if (VarStorageData->Name != NULL) {
FreePool (VarStorageData->Name);
VarStorageData->Name = NULL;
}
FreePool (VarStorageData);
}
if (DefaultIdArray != NULL) {
//
// Free DefaultId Array
//
while (!IsListEmpty (&DefaultIdArray->Entry)) {
DefaultId = BASE_CR (DefaultIdArray->Entry.ForwardLink, IFR_DEFAULT_DATA, Entry);
RemoveEntryList (&DefaultId->Entry);
FreePool (DefaultId);
}
FreePool (DefaultIdArray);
}
//
// Free the allocated string
//
if (ConfigHdr != NULL) {
FreePool (ConfigHdr);
}
//
// Free Package data
//
if (HiiFormPackage != NULL) {
FreePool (HiiFormPackage);
}
if (PointerProgress != NULL) {
if (*Request == NULL) {
*PointerProgress = NULL;
} else if (EFI_ERROR (Status)) {
*PointerProgress = *Request;
} else {
*PointerProgress = *Request + StrLen (*Request);
}
}
return Status;
}
/**
This function gets the full request resp string by
parsing IFR data in HII form packages.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param EfiVarStoreInfo The efi varstore info which is save in the EFI
varstore data structure.
@param Request Pointer to a null-terminated Unicode string in
<ConfigRequest> format.
@param RequestResp Pointer to a null-terminated Unicode string in
<ConfigResp> format.
@param AccessProgress On return, points to a character in the Request
string. Points to the string's null terminator if
request was successful. Points to the most recent
& before the first failing name / value pair (or
the beginning of the string if the failure is in
the first name / value pair) if the request was
not successful.
@retval EFI_SUCCESS The Results string is set to the full request string.
And AltCfgResp contains all default value string.
@retval EFI_OUT_OF_RESOURCES Not enough memory for the return string.
@retval EFI_INVALID_PARAMETER Request points to NULL.
**/
EFI_STATUS
GetConfigRespFromEfiVarStore (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
IN EFI_IFR_VARSTORE_EFI *EfiVarStoreInfo,
IN EFI_STRING Request,
OUT EFI_STRING *RequestResp,
OUT EFI_STRING *AccessProgress
)
{
EFI_STATUS Status;
EFI_STRING VarStoreName;
UINTN NameSize;
UINT8 *VarStore;
UINTN BufferSize;
Status = EFI_SUCCESS;
BufferSize = 0;
VarStore = NULL;
VarStoreName = NULL;
*AccessProgress = Request;
NameSize = AsciiStrSize ((CHAR8 *)EfiVarStoreInfo->Name);
VarStoreName = AllocateZeroPool (NameSize * sizeof (CHAR16));
if (VarStoreName == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
AsciiStrToUnicodeStrS ((CHAR8 *)EfiVarStoreInfo->Name, VarStoreName, NameSize);
Status = gRT->GetVariable (VarStoreName, &EfiVarStoreInfo->Guid, NULL, &BufferSize, NULL);
if (Status != EFI_BUFFER_TOO_SMALL) {
goto Done;
}
VarStore = AllocateZeroPool (BufferSize);
ASSERT (VarStore != NULL);
Status = gRT->GetVariable (VarStoreName, &EfiVarStoreInfo->Guid, NULL, &BufferSize, VarStore);
if (EFI_ERROR (Status)) {
goto Done;
}
Status = HiiBlockToConfig (This, Request, VarStore, BufferSize, RequestResp, AccessProgress);
if (EFI_ERROR (Status)) {
goto Done;
}
Done:
if (VarStoreName != NULL) {
FreePool (VarStoreName);
}
if (VarStore != NULL) {
FreePool (VarStore);
}
return Status;
}
/**
This function route the full request resp string for efi varstore.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param EfiVarStoreInfo The efi varstore info which is save in the EFI
varstore data structure.
@param RequestResp Pointer to a null-terminated Unicode string in
<ConfigResp> format.
@param Result Pointer to a null-terminated Unicode string in
<ConfigResp> format.
@retval EFI_SUCCESS The Results string is set to the full request string.
And AltCfgResp contains all default value string.
@retval EFI_OUT_OF_RESOURCES Not enough memory for the return string.
@retval EFI_INVALID_PARAMETER Request points to NULL.
**/
EFI_STATUS
RouteConfigRespForEfiVarStore (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
IN EFI_IFR_VARSTORE_EFI *EfiVarStoreInfo,
IN EFI_STRING RequestResp,
OUT EFI_STRING *Result
)
{
EFI_STATUS Status;
EFI_STRING VarStoreName;
UINTN NameSize;
UINT8 *VarStore;
UINTN BufferSize;
UINTN BlockSize;
Status = EFI_SUCCESS;
BufferSize = 0;
VarStore = NULL;
VarStoreName = NULL;
*Result = RequestResp;
NameSize = AsciiStrSize ((CHAR8 *)EfiVarStoreInfo->Name);
VarStoreName = AllocateZeroPool (NameSize * sizeof (CHAR16));
if (VarStoreName == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
AsciiStrToUnicodeStrS ((CHAR8 *)EfiVarStoreInfo->Name, VarStoreName, NameSize);
Status = gRT->GetVariable (VarStoreName, &EfiVarStoreInfo->Guid, NULL, &BufferSize, NULL);
if (Status != EFI_BUFFER_TOO_SMALL) {
DEBUG ((DEBUG_ERROR, "The variable does not exist!"));
goto Done;
}
BlockSize = BufferSize;
VarStore = AllocateZeroPool (BufferSize);
ASSERT (VarStore != NULL);
Status = gRT->GetVariable (VarStoreName, &EfiVarStoreInfo->Guid, NULL, &BufferSize, VarStore);
if (EFI_ERROR (Status)) {
goto Done;
}
Status = HiiConfigToBlock (This, RequestResp, VarStore, &BlockSize, Result);
if (EFI_ERROR (Status)) {
goto Done;
}
Status = gRT->SetVariable (VarStoreName, &EfiVarStoreInfo->Guid, EfiVarStoreInfo->Attributes, BufferSize, VarStore);
if (EFI_ERROR (Status)) {
*Result = RequestResp;
goto Done;
}
Done:
if (VarStoreName != NULL) {
FreePool (VarStoreName);
}
if (VarStore != NULL) {
FreePool (VarStore);
}
return Status;
}
/**
Validate the config request elements.
@param ConfigElements A null-terminated Unicode string in <ConfigRequest> format,
without configHdr field.
@retval CHAR16 * THE first Name/value pair not correct.
@retval NULL Success parse the name/value pair
**/
CHAR16 *
OffsetWidthValidate (
CHAR16 *ConfigElements
)
{
CHAR16 *StringPtr;
CHAR16 *RetVal;
StringPtr = ConfigElements;
while (1) {
RetVal = StringPtr;
if (StrnCmp (StringPtr, L"&OFFSET=", StrLen (L"&OFFSET=")) != 0) {
return RetVal;
}
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&WIDTH=", StrLen (L"&WIDTH=")) != 0) {
StringPtr++;
}
if (*StringPtr == L'\0') {
return RetVal;
}
StringPtr += StrLen (L"&WIDTH=");
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&OFFSET=", StrLen (L"&OFFSET=")) != 0) {
StringPtr++;
}
if (*StringPtr == L'\0') {
return NULL;
}
}
}
/**
Validate the config request elements.
@param ConfigElements A null-terminated Unicode string in <ConfigRequest> format,
without configHdr field.
@retval CHAR16 * THE first Name/value pair not correct.
@retval NULL Success parse the name/value pair
**/
CHAR16 *
NameValueValidate (
CHAR16 *ConfigElements
)
{
CHAR16 *StringPtr;
CHAR16 *RetVal;
StringPtr = ConfigElements;
while (1) {
RetVal = StringPtr;
if (*StringPtr != L'&') {
return RetVal;
}
StringPtr += 1;
StringPtr = StrStr (StringPtr, L"&");
if (StringPtr == NULL) {
return NULL;
}
}
}
/**
Validate the config request string.
@param ConfigRequest A null-terminated Unicode string in <ConfigRequest> format.
@retval CHAR16 * THE first element not correct.
@retval NULL Success parse the name/value pair
**/
CHAR16 *
ConfigRequestValidate (
CHAR16 *ConfigRequest
)
{
BOOLEAN HasNameField;
CHAR16 *StringPtr;
HasNameField = TRUE;
StringPtr = ConfigRequest;
//
// Check <ConfigHdr>
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
return ConfigRequest;
}
StringPtr += StrLen (L"GUID=");
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&NAME=", StrLen (L"&NAME=")) != 0) {
StringPtr++;
}
if (*StringPtr == L'\0') {
return ConfigRequest;
}
StringPtr += StrLen (L"&NAME=");
if (*StringPtr == L'&') {
HasNameField = FALSE;
}
while (*StringPtr != L'\0' && StrnCmp (StringPtr, L"&PATH=", StrLen (L"&PATH=")) != 0) {
StringPtr++;
}
if (*StringPtr == L'\0') {
return ConfigRequest;
}
StringPtr += StrLen (L"&PATH=");
while (*StringPtr != L'\0' && *StringPtr != L'&') {
StringPtr++;
}
if (*StringPtr == L'\0') {
return NULL;
}
if (HasNameField) {
//
// Should be Buffer varstore, config request should be "OFFSET/Width" pairs.
//
return OffsetWidthValidate (StringPtr);
} else {
//
// Should be Name/Value varstore, config request should be "&name1&name2..." pairs.
//
return NameValueValidate (StringPtr);
}
}
/**
This function allows a caller to extract the current configuration
for one or more named elements from one or more drivers.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param Request A null-terminated Unicode string in
<MultiConfigRequest> format.
@param Progress On return, points to a character in the Request
string. Points to the string's null terminator if
request was successful. Points to the most recent
& before the first failing name / value pair (or
the beginning of the string if the failure is in
the first name / value pair) if the request was
not successful.
@param Results Null-terminated Unicode string in
<MultiConfigAltResp> format which has all values
filled in for the names in the Request string.
String to be allocated by the called function.
@retval EFI_SUCCESS The Results string is filled with the values
corresponding to all requested names.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the parts of the
results that must be stored awaiting possible
future protocols.
@retval EFI_NOT_FOUND Routing data doesn't match any known driver.
Progress set to the "G" in "GUID" of the routing
header that doesn't match. Note: There is no
requirement that all routing data be validated
before any configuration extraction.
@retval EFI_INVALID_PARAMETER For example, passing in a NULL for the Request
parameter would result in this type of error. The
Progress parameter is set to NULL.
@retval EFI_INVALID_PARAMETER Illegal syntax. Progress set to most recent &
before the error or the beginning of the string.
@retval EFI_INVALID_PARAMETER The ExtractConfig function of the underlying HII
Configuration Access Protocol returned
EFI_INVALID_PARAMETER. Progress set to most recent
& before the error or the beginning of the string.
**/
EFI_STATUS
EFIAPI
HiiConfigRoutingExtractConfig (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
IN CONST EFI_STRING Request,
OUT EFI_STRING *Progress,
OUT EFI_STRING *Results
)
{
HII_DATABASE_PRIVATE_DATA *Private;
EFI_STRING StringPtr;
EFI_STRING ConfigRequest;
UINTN Length;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
EFI_STATUS Status;
LIST_ENTRY *Link;
HII_DATABASE_RECORD *Database;
UINT8 *DevicePathPkg;
UINT8 *CurrentDevicePath;
EFI_HANDLE DriverHandle;
EFI_HII_HANDLE HiiHandle;
EFI_HII_CONFIG_ACCESS_PROTOCOL *ConfigAccess;
EFI_STRING AccessProgress;
EFI_STRING AccessResults;
EFI_STRING AccessProgressBackup;
EFI_STRING AccessResultsBackup;
EFI_STRING DefaultResults;
BOOLEAN FirstElement;
BOOLEAN IfrDataParsedFlag;
BOOLEAN IsEfiVarStore;
EFI_IFR_VARSTORE_EFI *EfiVarStoreInfo;
EFI_STRING ErrorPtr;
UINTN DevicePathSize;
UINTN ConigStringSize;
UINTN ConigStringSizeNewsize;
EFI_STRING ConfigStringPtr;
if ((This == NULL) || (Progress == NULL) || (Results == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (Request == NULL) {
*Progress = NULL;
return EFI_INVALID_PARAMETER;
}
Private = CONFIG_ROUTING_DATABASE_PRIVATE_DATA_FROM_THIS (This);
StringPtr = Request;
*Progress = StringPtr;
DefaultResults = NULL;
ConfigRequest = NULL;
Status = EFI_SUCCESS;
AccessResults = NULL;
AccessProgress = NULL;
AccessResultsBackup = NULL;
AccessProgressBackup = NULL;
DevicePath = NULL;
IfrDataParsedFlag = FALSE;
IsEfiVarStore = FALSE;
EfiVarStoreInfo = NULL;
//
// The first element of <MultiConfigRequest> should be
// <GuidHdr>, which is in 'GUID='<Guid> syntax.
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
return EFI_INVALID_PARAMETER;
}
FirstElement = TRUE;
//
// Allocate a fix length of memory to store Results. Reallocate memory for
// Results if this fix length is insufficient.
//
*Results = (EFI_STRING)AllocateZeroPool (MAX_STRING_LENGTH);
if (*Results == NULL) {
return EFI_OUT_OF_RESOURCES;
}
while (*StringPtr != 0 && StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) == 0) {
//
// If parsing error, set Progress to the beginning of the <MultiConfigRequest>
// or most recent & before the error.
//
if (StringPtr == Request) {
*Progress = StringPtr;
} else {
*Progress = StringPtr - 1;
}
//
// Process each <ConfigRequest> of <MultiConfigRequest>
//
Length = CalculateConfigStringLen (StringPtr);
ConfigRequest = AllocateCopyPool ((Length + 1) * sizeof (CHAR16), StringPtr);
if (ConfigRequest == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
*(ConfigRequest + Length) = 0;
//
// Get the UEFI device path
//
Status = GetDevicePath (ConfigRequest, (UINT8 **)&DevicePath);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Find driver which matches the routing data.
//
DriverHandle = NULL;
HiiHandle = NULL;
Database = NULL;
for (Link = Private->DatabaseList.ForwardLink;
Link != &Private->DatabaseList;
Link = Link->ForwardLink
)
{
Database = CR (Link, HII_DATABASE_RECORD, DatabaseEntry, HII_DATABASE_RECORD_SIGNATURE);
if ((DevicePathPkg = Database->PackageList->DevicePathPkg) != NULL) {
CurrentDevicePath = DevicePathPkg + sizeof (EFI_HII_PACKAGE_HEADER);
DevicePathSize = GetDevicePathSize ((EFI_DEVICE_PATH_PROTOCOL *)CurrentDevicePath);
if ((CompareMem (DevicePath, CurrentDevicePath, DevicePathSize) == 0) && IsThisPackageList (Database, ConfigRequest)) {
DriverHandle = Database->DriverHandle;
HiiHandle = Database->Handle;
break;
}
}
}
//
// Try to find driver handle by device path.
//
if (DriverHandle == NULL) {
TempDevicePath = DevicePath;
Status = gBS->LocateDevicePath (
&gEfiDevicePathProtocolGuid,
&TempDevicePath,
&DriverHandle
);
if (EFI_ERROR (Status) || (DriverHandle == NULL)) {
//
// Routing data does not match any known driver.
// Set Progress to the 'G' in "GUID" of the routing header.
//
*Progress = StringPtr;
Status = EFI_NOT_FOUND;
goto Done;
}
}
//
// Validate ConfigRequest String.
//
ErrorPtr = ConfigRequestValidate (ConfigRequest);
if (ErrorPtr != NULL) {
*Progress = StrStr (StringPtr, ErrorPtr);
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether ConfigRequest contains request string.
//
IfrDataParsedFlag = FALSE;
if ((HiiHandle != NULL) && !GetElementsFromRequest (ConfigRequest)) {
//
// Get the full request string from IFR when HiiPackage is registered to HiiHandle
//
IfrDataParsedFlag = TRUE;
Status = GetFullStringFromHiiFormPackages (Database, DevicePath, &ConfigRequest, &DefaultResults, &AccessProgress);
if (EFI_ERROR (Status)) {
//
// AccessProgress indicates the parsing progress on <ConfigRequest>.
// Map it to the progress on <MultiConfigRequest> then return it.
//
ASSERT (AccessProgress != NULL);
*Progress = StrStr (StringPtr, AccessProgress);
goto Done;
}
//
// Not any request block is found.
//
if (!GetElementsFromRequest (ConfigRequest)) {
AccessResults = AllocateCopyPool (StrSize (ConfigRequest), ConfigRequest);
goto NextConfigString;
}
}
//
// Check whether this ConfigRequest is search from Efi varstore type storage.
//
Status = GetVarStoreType (Database, ConfigRequest, &IsEfiVarStore, &EfiVarStoreInfo);
if (EFI_ERROR (Status)) {
goto Done;
}
if (IsEfiVarStore) {
//
// Call the GetVariable function to extract settings.
//
Status = GetConfigRespFromEfiVarStore (This, EfiVarStoreInfo, ConfigRequest, &AccessResults, &AccessProgress);
FreePool (EfiVarStoreInfo);
if (EFI_ERROR (Status)) {
//
// AccessProgress indicates the parsing progress on <ConfigRequest>.
// Map it to the progress on <MultiConfigRequest> then return it.
//
*Progress = StrStr (StringPtr, AccessProgress);
goto Done;
}
//
// For EfiVarstore, call corresponding ConfigAccess protocol to get the AltCfgResp from driver.
//
Status = gBS->HandleProtocol (
DriverHandle,
&gEfiHiiConfigAccessProtocolGuid,
(VOID **)&ConfigAccess
);
if (EFI_ERROR (Status)) {
//
// The driver has EfiVarStore, may not install ConfigAccess protocol.
// So ignore the error status in this case.
//
Status = EFI_SUCCESS;
} else {
Status = ConfigAccess->ExtractConfig (
ConfigAccess,
ConfigRequest,
&AccessProgressBackup,
&AccessResultsBackup
);
if (!EFI_ERROR (Status)) {
//
// Merge the AltCfgResp in AccessResultsBackup to AccessResults
//
if ((AccessResultsBackup != NULL) && (StrStr (AccessResultsBackup, L"&ALTCFG=") != NULL)) {
ConigStringSize = StrSize (AccessResults);
ConfigStringPtr = StrStr (AccessResultsBackup, L"&GUID=");
ConigStringSizeNewsize = StrSize (ConfigStringPtr) + ConigStringSize + sizeof (CHAR16);
AccessResults = (EFI_STRING)ReallocatePool (
ConigStringSize,
ConigStringSizeNewsize,
AccessResults
);
StrCatS (AccessResults, ConigStringSizeNewsize / sizeof (CHAR16), ConfigStringPtr);
}
} else {
//
// In the ExtractConfig function of some driver may not support EfiVarStore,
// may return error status, just ignore the error status in this case.
//
Status = EFI_SUCCESS;
}
if (AccessResultsBackup != NULL) {
FreePool (AccessResultsBackup);
AccessResultsBackup = NULL;
}
}
} else {
//
// Call corresponding ConfigAccess protocol to extract settings
//
Status = gBS->HandleProtocol (
DriverHandle,
&gEfiHiiConfigAccessProtocolGuid,
(VOID **)&ConfigAccess
);
if (EFI_ERROR (Status)) {
goto Done;
}
Status = ConfigAccess->ExtractConfig (
ConfigAccess,
ConfigRequest,
&AccessProgress,
&AccessResults
);
}
if (EFI_ERROR (Status)) {
//
// AccessProgress indicates the parsing progress on <ConfigRequest>.
// Map it to the progress on <MultiConfigRequest> then return it.
//
*Progress = StrStr (StringPtr, AccessProgress);
goto Done;
}
//
// Attach this <ConfigAltResp> to a <MultiConfigAltResp>. There is a '&'
// which separates the first <ConfigAltResp> and the following ones.
//
ASSERT (*AccessProgress == 0);
//
// Update AccessResults by getting default setting from IFR when HiiPackage is registered to HiiHandle
//
if (!IfrDataParsedFlag && (HiiHandle != NULL)) {
Status = GetFullStringFromHiiFormPackages (Database, DevicePath, &ConfigRequest, &DefaultResults, NULL);
ASSERT_EFI_ERROR (Status);
}
FreePool (DevicePath);
DevicePath = NULL;
if (DefaultResults != NULL) {
Status = MergeDefaultString (&AccessResults, DefaultResults);
ASSERT_EFI_ERROR (Status);
FreePool (DefaultResults);
DefaultResults = NULL;
}
NextConfigString:
if (!FirstElement) {
Status = AppendToMultiString (Results, L"&");
ASSERT_EFI_ERROR (Status);
}
Status = AppendToMultiString (Results, AccessResults);
ASSERT_EFI_ERROR (Status);
FirstElement = FALSE;
FreePool (AccessResults);
AccessResults = NULL;
FreePool (ConfigRequest);
ConfigRequest = NULL;
//
// Go to next <ConfigRequest> (skip '&').
//
StringPtr += Length;
if (*StringPtr == 0) {
*Progress = StringPtr;
break;
}
StringPtr++;
}
Done:
if (EFI_ERROR (Status)) {
FreePool (*Results);
*Results = NULL;
}
if (ConfigRequest != NULL) {
FreePool (ConfigRequest);
}
if (AccessResults != NULL) {
FreePool (AccessResults);
}
if (DefaultResults != NULL) {
FreePool (DefaultResults);
}
if (DevicePath != NULL) {
FreePool (DevicePath);
}
return Status;
}
/**
This function allows the caller to request the current configuration for the
entirety of the current HII database and returns the data in a
null-terminated Unicode string.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param Results Null-terminated Unicode string in
<MultiConfigAltResp> format which has all values
filled in for the entirety of the current HII
database. String to be allocated by the called
function. De-allocation is up to the caller.
@retval EFI_SUCCESS The Results string is filled with the values
corresponding to all requested names.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the parts of the
results that must be stored awaiting possible
future protocols.
@retval EFI_INVALID_PARAMETER For example, passing in a NULL for the Results
parameter would result in this type of error.
**/
EFI_STATUS
EFIAPI
HiiConfigRoutingExportConfig (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
OUT EFI_STRING *Results
)
{
EFI_STATUS Status;
EFI_HII_CONFIG_ACCESS_PROTOCOL *ConfigAccess;
EFI_STRING AccessResults;
EFI_STRING Progress;
EFI_STRING StringPtr;
EFI_STRING ConfigRequest;
UINTN Index;
EFI_HANDLE *ConfigAccessHandles;
UINTN NumberConfigAccessHandles;
BOOLEAN FirstElement;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_HII_HANDLE HiiHandle;
EFI_STRING DefaultResults;
HII_DATABASE_PRIVATE_DATA *Private;
LIST_ENTRY *Link;
HII_DATABASE_RECORD *Database;
UINT8 *DevicePathPkg;
UINT8 *CurrentDevicePath;
BOOLEAN IfrDataParsedFlag;
if ((This == NULL) || (Results == NULL)) {
return EFI_INVALID_PARAMETER;
}
Private = CONFIG_ROUTING_DATABASE_PRIVATE_DATA_FROM_THIS (This);
//
// Allocate a fix length of memory to store Results. Reallocate memory for
// Results if this fix length is insufficient.
//
*Results = (EFI_STRING)AllocateZeroPool (MAX_STRING_LENGTH);
if (*Results == NULL) {
return EFI_OUT_OF_RESOURCES;
}
NumberConfigAccessHandles = 0;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiHiiConfigAccessProtocolGuid,
NULL,
&NumberConfigAccessHandles,
&ConfigAccessHandles
);
if (EFI_ERROR (Status)) {
return Status;
}
FirstElement = TRUE;
for (Index = 0; Index < NumberConfigAccessHandles; Index++) {
Status = gBS->HandleProtocol (
ConfigAccessHandles[Index],
&gEfiHiiConfigAccessProtocolGuid,
(VOID **)&ConfigAccess
);
if (EFI_ERROR (Status)) {
continue;
}
//
// Get DevicePath and HiiHandle for this ConfigAccess driver handle
//
IfrDataParsedFlag = FALSE;
Progress = NULL;
HiiHandle = NULL;
DefaultResults = NULL;
Database = NULL;
ConfigRequest = NULL;
DevicePath = DevicePathFromHandle (ConfigAccessHandles[Index]);
if (DevicePath != NULL) {
for (Link = Private->DatabaseList.ForwardLink;
Link != &Private->DatabaseList;
Link = Link->ForwardLink
)
{
Database = CR (Link, HII_DATABASE_RECORD, DatabaseEntry, HII_DATABASE_RECORD_SIGNATURE);
if ((DevicePathPkg = Database->PackageList->DevicePathPkg) != NULL) {
CurrentDevicePath = DevicePathPkg + sizeof (EFI_HII_PACKAGE_HEADER);
if (CompareMem (
DevicePath,
CurrentDevicePath,
GetDevicePathSize ((EFI_DEVICE_PATH_PROTOCOL *)CurrentDevicePath)
) == 0)
{
HiiHandle = Database->Handle;
break;
}
}
}
}
Status = ConfigAccess->ExtractConfig (
ConfigAccess,
NULL,
&Progress,
&AccessResults
);
if (EFI_ERROR (Status)) {
//
// Update AccessResults by getting default setting from IFR when HiiPackage is registered to HiiHandle
//
if ((HiiHandle != NULL) && (DevicePath != NULL)) {
IfrDataParsedFlag = TRUE;
Status = GetFullStringFromHiiFormPackages (Database, DevicePath, &ConfigRequest, &DefaultResults, NULL);
//
// Get the full request string to get the Current setting again.
//
if (!EFI_ERROR (Status) && (ConfigRequest != NULL)) {
Status = ConfigAccess->ExtractConfig (
ConfigAccess,
ConfigRequest,
&Progress,
&AccessResults
);
FreePool (ConfigRequest);
} else {
Status = EFI_NOT_FOUND;
}
}
}
if (!EFI_ERROR (Status)) {
//
// Update AccessResults by getting default setting from IFR when HiiPackage is registered to HiiHandle
//
if (!IfrDataParsedFlag && (HiiHandle != NULL) && (DevicePath != NULL)) {
StringPtr = StrStr (AccessResults, L"&GUID=");
if (StringPtr != NULL) {
*StringPtr = 0;
}
if (GetElementsFromRequest (AccessResults)) {
Status = GetFullStringFromHiiFormPackages (Database, DevicePath, &AccessResults, &DefaultResults, NULL);
ASSERT_EFI_ERROR (Status);
}
if (StringPtr != NULL) {
*StringPtr = L'&';
}
}
//
// Merge the default sting from IFR code into the got setting from driver.
//
if (DefaultResults != NULL) {
Status = MergeDefaultString (&AccessResults, DefaultResults);
ASSERT_EFI_ERROR (Status);
FreePool (DefaultResults);
DefaultResults = NULL;
}
//
// Attach this <ConfigAltResp> to a <MultiConfigAltResp>. There is a '&'
// which separates the first <ConfigAltResp> and the following ones.
//
if (!FirstElement) {
Status = AppendToMultiString (Results, L"&");
ASSERT_EFI_ERROR (Status);
}
Status = AppendToMultiString (Results, AccessResults);
ASSERT_EFI_ERROR (Status);
FirstElement = FALSE;
FreePool (AccessResults);
AccessResults = NULL;
}
}
FreePool (ConfigAccessHandles);
return EFI_SUCCESS;
}
/**
This function processes the results of processing forms and routes it to the
appropriate handlers or storage.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param Configuration A null-terminated Unicode string in
<MulltiConfigResp> format.
@param Progress A pointer to a string filled in with the offset of
the most recent & before the first failing name /
value pair (or the beginning of the string if the
failure is in the first name / value pair) or the
terminating NULL if all was successful.
@retval EFI_SUCCESS The results have been distributed or are awaiting
distribution.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the parts of the
results that must be stored awaiting possible
future protocols.
@retval EFI_INVALID_PARAMETER Passing in a NULL for the Configuration parameter
would result in this type of error.
@retval EFI_NOT_FOUND Target for the specified routing data was not
found.
**/
EFI_STATUS
EFIAPI
HiiConfigRoutingRouteConfig (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
OUT EFI_STRING *Progress
)
{
HII_DATABASE_PRIVATE_DATA *Private;
EFI_STRING StringPtr;
EFI_STRING ConfigResp;
UINTN Length;
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
LIST_ENTRY *Link;
HII_DATABASE_RECORD *Database;
UINT8 *DevicePathPkg;
UINT8 *CurrentDevicePath;
EFI_HANDLE DriverHandle;
EFI_HII_CONFIG_ACCESS_PROTOCOL *ConfigAccess;
EFI_STRING AccessProgress;
EFI_IFR_VARSTORE_EFI *EfiVarStoreInfo;
BOOLEAN IsEfiVarstore;
UINTN DevicePathSize;
if ((This == NULL) || (Progress == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (Configuration == NULL) {
*Progress = NULL;
return EFI_INVALID_PARAMETER;
}
Private = CONFIG_ROUTING_DATABASE_PRIVATE_DATA_FROM_THIS (This);
StringPtr = Configuration;
*Progress = StringPtr;
Database = NULL;
AccessProgress = NULL;
EfiVarStoreInfo = NULL;
IsEfiVarstore = FALSE;
//
// The first element of <MultiConfigResp> should be
// <GuidHdr>, which is in 'GUID='<Guid> syntax.
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
return EFI_INVALID_PARAMETER;
}
while (*StringPtr != 0 && StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) == 0) {
//
// If parsing error, set Progress to the beginning of the <MultiConfigResp>
// or most recent & before the error.
//
if (StringPtr == Configuration) {
*Progress = StringPtr;
} else {
*Progress = StringPtr - 1;
}
//
// Process each <ConfigResp> of <MultiConfigResp>
//
Length = CalculateConfigStringLen (StringPtr);
ConfigResp = AllocateCopyPool ((Length + 1) * sizeof (CHAR16), StringPtr);
if (ConfigResp == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Append '\0' to the end of ConfigRequest
//
*(ConfigResp + Length) = 0;
//
// Get the UEFI device path
//
Status = GetDevicePath (ConfigResp, (UINT8 **)&DevicePath);
if (EFI_ERROR (Status)) {
FreePool (ConfigResp);
return Status;
}
//
// Find driver which matches the routing data.
//
DriverHandle = NULL;
for (Link = Private->DatabaseList.ForwardLink;
Link != &Private->DatabaseList;
Link = Link->ForwardLink
)
{
Database = CR (Link, HII_DATABASE_RECORD, DatabaseEntry, HII_DATABASE_RECORD_SIGNATURE);
if ((DevicePathPkg = Database->PackageList->DevicePathPkg) != NULL) {
CurrentDevicePath = DevicePathPkg + sizeof (EFI_HII_PACKAGE_HEADER);
DevicePathSize = GetDevicePathSize ((EFI_DEVICE_PATH_PROTOCOL *)CurrentDevicePath);
if ((CompareMem (DevicePath, CurrentDevicePath, DevicePathSize) == 0) && IsThisPackageList (Database, ConfigResp)) {
DriverHandle = Database->DriverHandle;
break;
}
}
}
//
// Try to find driver handle by device path.
//
if (DriverHandle == NULL) {
TempDevicePath = DevicePath;
Status = gBS->LocateDevicePath (
&gEfiDevicePathProtocolGuid,
&TempDevicePath,
&DriverHandle
);
if (EFI_ERROR (Status) || (DriverHandle == NULL)) {
//
// Routing data does not match any known driver.
// Set Progress to the 'G' in "GUID" of the routing header.
//
FreePool (DevicePath);
*Progress = StringPtr;
FreePool (ConfigResp);
return EFI_NOT_FOUND;
}
}
FreePool (DevicePath);
//
// Check whether this ConfigRequest is search from Efi varstore type storage.
//
Status = GetVarStoreType (Database, ConfigResp, &IsEfiVarstore, &EfiVarStoreInfo);
if (EFI_ERROR (Status)) {
return Status;
}
if (IsEfiVarstore) {
//
// Call the SetVariable function to route settings.
//
Status = RouteConfigRespForEfiVarStore (This, EfiVarStoreInfo, ConfigResp, &AccessProgress);
FreePool (EfiVarStoreInfo);
} else {
//
// Call corresponding ConfigAccess protocol to route settings
//
Status = gBS->HandleProtocol (
DriverHandle,
&gEfiHiiConfigAccessProtocolGuid,
(VOID **)&ConfigAccess
);
if (EFI_ERROR (Status)) {
*Progress = StringPtr;
FreePool (ConfigResp);
return EFI_NOT_FOUND;
}
Status = ConfigAccess->RouteConfig (
ConfigAccess,
ConfigResp,
&AccessProgress
);
}
if (EFI_ERROR (Status)) {
ASSERT (AccessProgress != NULL);
//
// AccessProgress indicates the parsing progress on <ConfigResp>.
// Map it to the progress on <MultiConfigResp> then return it.
//
*Progress = StrStr (StringPtr, AccessProgress);
FreePool (ConfigResp);
return Status;
}
FreePool (ConfigResp);
ConfigResp = NULL;
//
// Go to next <ConfigResp> (skip '&').
//
StringPtr += Length;
if (*StringPtr == 0) {
*Progress = StringPtr;
break;
}
StringPtr++;
}
return EFI_SUCCESS;
}
/**
This helper function is to be called by drivers to map configuration data
stored in byte array ("block") formats such as UEFI Variables into current
configuration strings.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param ConfigRequest A null-terminated Unicode string in
<ConfigRequest> format.
@param Block Array of bytes defining the block's configuration.
@param BlockSize Length in bytes of Block.
@param Config Filled-in configuration string. String allocated
by the function. Returned only if call is
successful. It is <ConfigResp> string format.
@param Progress A pointer to a string filled in with the offset of
the most recent & before the first failing
name/value pair (or the beginning of the string if
the failure is in the first name / value pair) or
the terminating NULL if all was successful.
@retval EFI_SUCCESS The request succeeded. Progress points to the null
terminator at the end of the ConfigRequest
string.
@retval EFI_OUT_OF_RESOURCES Not enough memory to allocate Config. Progress
points to the first character of ConfigRequest.
@retval EFI_INVALID_PARAMETER Passing in a NULL for the ConfigRequest or
Block parameter would result in this type of
error. Progress points to the first character of
ConfigRequest.
@retval EFI_DEVICE_ERROR Block not large enough. Progress undefined.
@retval EFI_INVALID_PARAMETER Encountered non <BlockName> formatted string.
Block is left updated and Progress points at
the "&" preceding the first non-<BlockName>.
**/
EFI_STATUS
EFIAPI
HiiBlockToConfig (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
IN CONST EFI_STRING ConfigRequest,
IN CONST UINT8 *Block,
IN CONST UINTN BlockSize,
OUT EFI_STRING *Config,
OUT EFI_STRING *Progress
)
{
HII_DATABASE_PRIVATE_DATA *Private;
EFI_STRING StringPtr;
UINTN Length;
EFI_STATUS Status;
EFI_STRING TmpPtr;
UINT8 *TmpBuffer;
UINTN Offset;
UINTN Width;
UINT8 *Value;
EFI_STRING ValueStr;
EFI_STRING ConfigElement;
UINTN Index;
UINT8 *TemBuffer;
CHAR16 *TemString;
TmpBuffer = NULL;
if ((This == NULL) || (Progress == NULL) || (Config == NULL)) {
return EFI_INVALID_PARAMETER;
}
if ((Block == NULL) || (ConfigRequest == NULL)) {
*Progress = ConfigRequest;
return EFI_INVALID_PARAMETER;
}
Private = CONFIG_ROUTING_DATABASE_PRIVATE_DATA_FROM_THIS (This);
ASSERT (Private != NULL);
StringPtr = ConfigRequest;
ValueStr = NULL;
Value = NULL;
ConfigElement = NULL;
//
// Allocate a fix length of memory to store Results. Reallocate memory for
// Results if this fix length is insufficient.
//
*Config = (EFI_STRING)AllocateZeroPool (MAX_STRING_LENGTH);
if (*Config == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Jump <ConfigHdr>
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
*Progress = StringPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
while (*StringPtr != 0 && StrnCmp (StringPtr, L"PATH=", StrLen (L"PATH=")) != 0) {
StringPtr++;
}
if (*StringPtr == 0) {
*Progress = StringPtr - 1;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
while (*StringPtr != L'&' && *StringPtr != 0) {
StringPtr++;
}
if (*StringPtr == 0) {
*Progress = StringPtr;
AppendToMultiString (Config, ConfigRequest);
HiiToLower (*Config);
return EFI_SUCCESS;
}
//
// Skip '&'
//
StringPtr++;
//
// Copy <ConfigHdr> and an additional '&' to <ConfigResp>
//
TemString = AllocateCopyPool (sizeof (CHAR16) * (StringPtr - ConfigRequest + 1), ConfigRequest);
if (TemString == NULL) {
return EFI_OUT_OF_RESOURCES;
}
TemString[StringPtr - ConfigRequest] = '\0';
AppendToMultiString (Config, TemString);
FreePool (TemString);
//
// Parse each <RequestElement> if exists
// Only <BlockName> format is supported by this help function.
// <BlockName> ::= 'OFFSET='<Number>&'WIDTH='<Number>
//
while (*StringPtr != 0 && StrnCmp (StringPtr, L"OFFSET=", StrLen (L"OFFSET=")) == 0) {
//
// Back up the header of one <BlockName>
//
TmpPtr = StringPtr;
StringPtr += StrLen (L"OFFSET=");
//
// Get Offset
//
Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
*Progress = TmpPtr - 1;
goto Exit;
}
Offset = 0;
CopyMem (
&Offset,
TmpBuffer,
(((Length + 1) / 2) < sizeof (UINTN)) ? ((Length + 1) / 2) : sizeof (UINTN)
);
FreePool (TmpBuffer);
StringPtr += Length;
if (StrnCmp (StringPtr, L"&WIDTH=", StrLen (L"&WIDTH=")) != 0) {
*Progress = TmpPtr - 1;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
StringPtr += StrLen (L"&WIDTH=");
//
// Get Width
//
Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
*Progress = TmpPtr - 1;
goto Exit;
}
Width = 0;
CopyMem (
&Width,
TmpBuffer,
(((Length + 1) / 2) < sizeof (UINTN)) ? ((Length + 1) / 2) : sizeof (UINTN)
);
FreePool (TmpBuffer);
StringPtr += Length;
if ((*StringPtr != 0) && (*StringPtr != L'&')) {
*Progress = TmpPtr - 1;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
//
// Calculate Value and convert it to hex string.
//
if (Offset + Width > BlockSize) {
*Progress = StringPtr;
Status = EFI_DEVICE_ERROR;
goto Exit;
}
Value = (UINT8 *)AllocateZeroPool (Width);
if (Value == NULL) {
*Progress = ConfigRequest;
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
CopyMem (Value, (UINT8 *)Block + Offset, Width);
Length = Width * 2 + 1;
ValueStr = (EFI_STRING)AllocateZeroPool (Length * sizeof (CHAR16));
if (ValueStr == NULL) {
*Progress = ConfigRequest;
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
TemString = ValueStr;
TemBuffer = Value + Width - 1;
for (Index = 0; Index < Width; Index++, TemBuffer--) {
UnicodeValueToStringS (
TemString,
Length * sizeof (CHAR16) - ((UINTN)TemString - (UINTN)ValueStr),
PREFIX_ZERO | RADIX_HEX,
*TemBuffer,
2
);
TemString += StrnLenS (TemString, Length - ((UINTN)TemString - (UINTN)ValueStr) / sizeof (CHAR16));
}
FreePool (Value);
Value = NULL;
//
// Build a ConfigElement
//
Length += StringPtr - TmpPtr + 1 + StrLen (L"VALUE=");
ConfigElement = (EFI_STRING)AllocateZeroPool (Length * sizeof (CHAR16));
if (ConfigElement == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
CopyMem (ConfigElement, TmpPtr, (StringPtr - TmpPtr + 1) * sizeof (CHAR16));
if (*StringPtr == 0) {
*(ConfigElement + (StringPtr - TmpPtr)) = L'&';
}
*(ConfigElement + (StringPtr - TmpPtr) + 1) = 0;
StrCatS (ConfigElement, Length, L"VALUE=");
StrCatS (ConfigElement, Length, ValueStr);
AppendToMultiString (Config, ConfigElement);
FreePool (ConfigElement);
FreePool (ValueStr);
ConfigElement = NULL;
ValueStr = NULL;
//
// If '\0', parsing is finished. Otherwise skip '&' to continue
//
if (*StringPtr == 0) {
break;
}
AppendToMultiString (Config, L"&");
StringPtr++;
}
if (*StringPtr != 0) {
*Progress = StringPtr - 1;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
HiiToLower (*Config);
*Progress = StringPtr;
return EFI_SUCCESS;
Exit:
if (*Config != NULL) {
FreePool (*Config);
*Config = NULL;
}
if (ValueStr != NULL) {
FreePool (ValueStr);
}
if (Value != NULL) {
FreePool (Value);
}
if (ConfigElement != NULL) {
FreePool (ConfigElement);
}
return Status;
}
/**
This helper function is to be called by drivers to map configuration strings
to configurations stored in byte array ("block") formats such as UEFI Variables.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param ConfigResp A null-terminated Unicode string in <ConfigResp>
format.
@param Block A possibly null array of bytes representing the
current block. Only bytes referenced in the
ConfigResp string in the block are modified. If
this parameter is null or if the *BlockSize
parameter is (on input) shorter than required by
the Configuration string, only the BlockSize
parameter is updated and an appropriate status
(see below) is returned.
@param BlockSize The length of the Block in units of UINT8. On
input, this is the size of the Block. On output,
if successful, contains the largest index of the
modified byte in the Block, or the required buffer
size if the Block is not large enough.
@param Progress On return, points to an element of the ConfigResp
string filled in with the offset of the most
recent '&' before the first failing name / value
pair (or the beginning of the string if the
failure is in the first name / value pair) or the
terminating NULL if all was successful.
@retval EFI_SUCCESS The request succeeded. Progress points to the null
terminator at the end of the ConfigResp string.
@retval EFI_OUT_OF_RESOURCES Not enough memory to allocate Config. Progress
points to the first character of ConfigResp.
@retval EFI_INVALID_PARAMETER Passing in a NULL for the ConfigResp or
Block parameter would result in this type of
error. Progress points to the first character of
ConfigResp.
@retval EFI_INVALID_PARAMETER Encountered non <BlockName> formatted name /
value pair. Block is left updated and
Progress points at the '&' preceding the first
non-<BlockName>.
@retval EFI_BUFFER_TOO_SMALL Block not large enough. Progress undefined.
BlockSize is updated with the required buffer size.
@retval EFI_NOT_FOUND Target for the specified routing data was not found.
Progress points to the "G" in "GUID" of the errant
routing data.
**/
EFI_STATUS
EFIAPI
HiiConfigToBlock (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
IN CONST EFI_STRING ConfigResp,
IN OUT UINT8 *Block,
IN OUT UINTN *BlockSize,
OUT EFI_STRING *Progress
)
{
HII_DATABASE_PRIVATE_DATA *Private;
EFI_STRING StringPtr;
EFI_STRING TmpPtr;
UINTN Length;
EFI_STATUS Status;
UINT8 *TmpBuffer;
UINTN Offset;
UINTN Width;
UINT8 *Value;
UINTN BufferSize;
UINTN MaxBlockSize;
TmpBuffer = NULL;
if ((This == NULL) || (BlockSize == NULL) || (Progress == NULL)) {
return EFI_INVALID_PARAMETER;
}
*Progress = ConfigResp;
if (ConfigResp == NULL) {
return EFI_INVALID_PARAMETER;
}
Private = CONFIG_ROUTING_DATABASE_PRIVATE_DATA_FROM_THIS (This);
ASSERT (Private != NULL);
StringPtr = ConfigResp;
BufferSize = *BlockSize;
Value = NULL;
MaxBlockSize = 0;
//
// Jump <ConfigHdr>
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
*Progress = StringPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
while (*StringPtr != 0 && StrnCmp (StringPtr, L"PATH=", StrLen (L"PATH=")) != 0) {
StringPtr++;
}
if (*StringPtr == 0) {
*Progress = StringPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
while (*StringPtr != L'&' && *StringPtr != 0) {
StringPtr++;
}
if (*StringPtr == 0) {
*Progress = StringPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
//
// Parse each <ConfigElement> if exists
// Only '&'<BlockConfig> format is supported by this help function.
// <BlockConfig> ::= 'OFFSET='<Number>&'WIDTH='<Number>&'VALUE='<Number>
//
while (*StringPtr != 0 && StrnCmp (StringPtr, L"&OFFSET=", StrLen (L"&OFFSET=")) == 0) {
TmpPtr = StringPtr;
StringPtr += StrLen (L"&OFFSET=");
//
// Get Offset
//
Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
*Progress = TmpPtr;
goto Exit;
}
Offset = 0;
CopyMem (
&Offset,
TmpBuffer,
(((Length + 1) / 2) < sizeof (UINTN)) ? ((Length + 1) / 2) : sizeof (UINTN)
);
FreePool (TmpBuffer);
StringPtr += Length;
if (StrnCmp (StringPtr, L"&WIDTH=", StrLen (L"&WIDTH=")) != 0) {
*Progress = TmpPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
StringPtr += StrLen (L"&WIDTH=");
//
// Get Width
//
Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
*Progress = TmpPtr;
goto Exit;
}
Width = 0;
CopyMem (
&Width,
TmpBuffer,
(((Length + 1) / 2) < sizeof (UINTN)) ? ((Length + 1) / 2) : sizeof (UINTN)
);
FreePool (TmpBuffer);
StringPtr += Length;
if (StrnCmp (StringPtr, L"&VALUE=", StrLen (L"&VALUE=")) != 0) {
*Progress = TmpPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
StringPtr += StrLen (L"&VALUE=");
//
// Get Value
//
Status = GetValueOfNumber (StringPtr, &Value, &Length);
if (EFI_ERROR (Status)) {
*Progress = TmpPtr;
goto Exit;
}
StringPtr += Length;
if ((*StringPtr != 0) && (*StringPtr != L'&')) {
*Progress = TmpPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
//
// Update the Block with configuration info
//
if ((Block != NULL) && (Offset + Width <= BufferSize)) {
CopyMem (Block + Offset, Value, Width);
}
if (Offset + Width > MaxBlockSize) {
MaxBlockSize = Offset + Width;
}
FreePool (Value);
Value = NULL;
//
// If '\0', parsing is finished.
//
if (*StringPtr == 0) {
break;
}
}
//
// The input string is not ConfigResp format, return error.
//
if (*StringPtr != 0) {
*Progress = StringPtr;
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
*Progress = StringPtr + StrLen (StringPtr);
*BlockSize = MaxBlockSize - 1;
if (MaxBlockSize > BufferSize) {
*BlockSize = MaxBlockSize;
if (Block != NULL) {
return EFI_BUFFER_TOO_SMALL;
}
}
if (Block == NULL) {
*Progress = ConfigResp;
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
Exit:
if (Value != NULL) {
FreePool (Value);
}
return Status;
}
/**
This helper function is to be called by drivers to extract portions of
a larger configuration string.
@param This A pointer to the EFI_HII_CONFIG_ROUTING_PROTOCOL
instance.
@param Configuration A null-terminated Unicode string in
<MultiConfigAltResp> format.
@param Guid A pointer to the GUID value to search for in the
routing portion of the ConfigResp string when
retrieving the requested data. If Guid is NULL,
then all GUID values will be searched for.
@param Name A pointer to the NAME value to search for in the
routing portion of the ConfigResp string when
retrieving the requested data. If Name is NULL,
then all Name values will be searched for.
@param DevicePath A pointer to the PATH value to search for in the
routing portion of the ConfigResp string when
retrieving the requested data. If DevicePath is
NULL, then all DevicePath values will be searched
for.
@param AltCfgId A pointer to the ALTCFG value to search for in the
routing portion of the ConfigResp string when
retrieving the requested data. If this parameter
is NULL, then the current setting will be
retrieved.
@param AltCfgResp A pointer to a buffer which will be allocated by
the function which contains the retrieved string
as requested. This buffer is only allocated if
the call was successful. It is <ConfigResp> format.
@retval EFI_SUCCESS The request succeeded. The requested data was
extracted and placed in the newly allocated
AltCfgResp buffer.
@retval EFI_OUT_OF_RESOURCES Not enough memory to allocate AltCfgResp.
@retval EFI_INVALID_PARAMETER Any parameter is invalid.
@retval EFI_NOT_FOUND Target for the specified routing data was not
found.
**/
EFI_STATUS
EFIAPI
HiiGetAltCfg (
IN CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
IN CONST EFI_GUID *Guid,
IN CONST EFI_STRING Name,
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN CONST UINT16 *AltCfgId,
OUT EFI_STRING *AltCfgResp
)
{
EFI_STATUS Status;
EFI_STRING StringPtr;
EFI_STRING HdrStart;
EFI_STRING HdrEnd;
EFI_STRING TmpPtr;
UINTN Length;
EFI_STRING GuidStr;
EFI_STRING NameStr;
EFI_STRING PathStr;
EFI_STRING AltIdStr;
EFI_STRING Result;
BOOLEAN GuidFlag;
BOOLEAN NameFlag;
BOOLEAN PathFlag;
HdrStart = NULL;
HdrEnd = NULL;
GuidStr = NULL;
NameStr = NULL;
PathStr = NULL;
AltIdStr = NULL;
Result = NULL;
GuidFlag = FALSE;
NameFlag = FALSE;
PathFlag = FALSE;
if ((This == NULL) || (Configuration == NULL) || (AltCfgResp == NULL)) {
return EFI_INVALID_PARAMETER;
}
StringPtr = Configuration;
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
return EFI_INVALID_PARAMETER;
}
//
// Generate the sub string for later matching.
//
GenerateSubStr (L"GUID=", sizeof (EFI_GUID), (VOID *)Guid, 1, &GuidStr);
GenerateSubStr (
L"PATH=",
GetDevicePathSize ((EFI_DEVICE_PATH_PROTOCOL *)DevicePath),
(VOID *)DevicePath,
1,
&PathStr
);
if (AltCfgId != NULL) {
GenerateSubStr (L"ALTCFG=", sizeof (UINT16), (VOID *)AltCfgId, 3, &AltIdStr);
}
if (Name != NULL) {
GenerateSubStr (L"NAME=", StrLen (Name) * sizeof (CHAR16), (VOID *)Name, 2, &NameStr);
} else {
GenerateSubStr (L"NAME=", 0, NULL, 2, &NameStr);
}
while (*StringPtr != 0) {
//
// Try to match the GUID
//
if (!GuidFlag) {
TmpPtr = StrStr (StringPtr, GuidStr);
if (TmpPtr == NULL) {
Status = EFI_NOT_FOUND;
goto Exit;
}
HdrStart = TmpPtr;
//
// Jump to <NameHdr>
//
if (Guid != NULL) {
StringPtr = TmpPtr + StrLen (GuidStr);
} else {
StringPtr = StrStr (TmpPtr, L"NAME=");
if (StringPtr == NULL) {
Status = EFI_NOT_FOUND;
goto Exit;
}
}
GuidFlag = TRUE;
}
//
// Try to match the NAME
//
if (GuidFlag && !NameFlag) {
if (StrnCmp (StringPtr, NameStr, StrLen (NameStr)) != 0) {
GuidFlag = FALSE;
} else {
//
// Jump to <PathHdr>
//
if (Name != NULL) {
StringPtr += StrLen (NameStr);
} else {
StringPtr = StrStr (StringPtr, L"PATH=");
if (StringPtr == NULL) {
Status = EFI_NOT_FOUND;
goto Exit;
}
}
NameFlag = TRUE;
}
}
//
// Try to match the DevicePath
//
if (GuidFlag && NameFlag && !PathFlag) {
if (StrnCmp (StringPtr, PathStr, StrLen (PathStr)) != 0) {
GuidFlag = FALSE;
NameFlag = FALSE;
} else {
//
// Jump to '&' before <DescHdr> or <ConfigBody>
//
if (DevicePath != NULL) {
StringPtr += StrLen (PathStr);
} else {
StringPtr = StrStr (StringPtr, L"&");
if (StringPtr == NULL) {
Status = EFI_NOT_FOUND;
goto Exit;
}
StringPtr++;
}
PathFlag = TRUE;
HdrEnd = StringPtr;
}
}
//
// Try to match the AltCfgId
//
if (GuidFlag && NameFlag && PathFlag) {
if (AltCfgId == NULL) {
//
// Return Current Setting when AltCfgId is NULL.
//
Status = OutputConfigBody (StringPtr, &Result);
goto Exit;
}
//
// Search the <ConfigAltResp> to get the <AltResp> with AltCfgId.
//
if (StrnCmp (StringPtr, AltIdStr, StrLen (AltIdStr)) != 0) {
GuidFlag = FALSE;
NameFlag = FALSE;
PathFlag = FALSE;
} else {
//
// Skip AltIdStr and &
//
StringPtr = StringPtr + StrLen (AltIdStr);
Status = OutputConfigBody (StringPtr, &Result);
goto Exit;
}
}
}
Status = EFI_NOT_FOUND;
Exit:
*AltCfgResp = NULL;
if (!EFI_ERROR (Status) && (Result != NULL)) {
//
// Copy the <ConfigHdr> and <ConfigBody>
//
Length = HdrEnd - HdrStart + StrLen (Result) + 1;
*AltCfgResp = AllocateZeroPool (Length * sizeof (CHAR16));
if (*AltCfgResp == NULL) {
Status = EFI_OUT_OF_RESOURCES;
} else {
StrnCpyS (*AltCfgResp, Length, HdrStart, HdrEnd - HdrStart);
StrCatS (*AltCfgResp, Length, Result);
Status = EFI_SUCCESS;
}
}
if (GuidStr != NULL) {
FreePool (GuidStr);
}
if (NameStr != NULL) {
FreePool (NameStr);
}
if (PathStr != NULL) {
FreePool (PathStr);
}
if (AltIdStr != NULL) {
FreePool (AltIdStr);
}
if (Result != NULL) {
FreePool (Result);
}
return Status;
}
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