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audk/MdeModulePkg/Library/UefiHiiLib/HiiLib.c

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/** @file
HII Library implementation that uses DXE protocols and services.
Copyright (c) 2006 - 2010, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "InternalHiiLib.h"
#define GUID_CONFIG_STRING_TYPE 0x00
#define NAME_CONFIG_STRING_TYPE 0x01
#define PATH_CONFIG_STRING_TYPE 0x02
#define ACTION_SET_DEFAUTL_VALUE 0x01
#define ACTION_VALIDATE_SETTING 0x02
#define HII_LIB_DEFAULT_VARSTORE_SIZE 0x200
typedef struct {
LIST_ENTRY Entry; // Link to Block array
UINT16 Offset;
UINT16 Width;
UINT8 OpCode;
UINT8 Scope;
} IFR_BLOCK_DATA;
//
// <ConfigHdr> Template
//
GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR16 mConfigHdrTemplate[] = L"GUID=00000000000000000000000000000000&NAME=0000&PATH=00";
EFI_FORM_BROWSER2_PROTOCOL *mUefiFormBrowser2 = NULL;
//
// Template used to mark the end of a list of packages
//
GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_HII_PACKAGE_HEADER mEndOfPakageList = {
sizeof (EFI_HII_PACKAGE_HEADER),
EFI_HII_PACKAGE_END
};
/**
Extract Hii package list GUID for given HII handle.
If HiiHandle could not be found in the HII database, then ASSERT.
If Guid is NULL, then ASSERT.
@param Handle Hii handle
@param Guid Package list GUID
@retval EFI_SUCCESS Successfully extract GUID from Hii database.
**/
EFI_STATUS
EFIAPI
InternalHiiExtractGuidFromHiiHandle (
IN EFI_HII_HANDLE Handle,
OUT EFI_GUID *Guid
)
{
EFI_STATUS Status;
UINTN BufferSize;
EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;
ASSERT (Guid != NULL);
ASSERT (Handle != NULL);
//
// Get HII PackageList
//
BufferSize = 0;
HiiPackageList = NULL;
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, Handle, &BufferSize, HiiPackageList);
ASSERT (Status != EFI_NOT_FOUND);
if (Status == EFI_BUFFER_TOO_SMALL) {
HiiPackageList = AllocatePool (BufferSize);
ASSERT (HiiPackageList != NULL);
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, Handle, &BufferSize, HiiPackageList);
}
if (EFI_ERROR (Status)) {
FreePool (HiiPackageList);
return Status;
}
//
// Extract GUID
//
CopyGuid (Guid, &HiiPackageList->PackageListGuid);
FreePool (HiiPackageList);
return EFI_SUCCESS;
}
/**
Registers a list of packages in the HII Database and returns the HII Handle
associated with that registration. If an HII Handle has already been registered
with the same PackageListGuid and DeviceHandle, then NULL is returned. If there
are not enough resources to perform the registration, then NULL is returned.
If an empty list of packages is passed in, then NULL is returned. If the size of
the list of package is 0, then NULL is returned.
The variable arguments are pointers which point to package header that defined
by UEFI VFR compiler and StringGather tool.
#pragma pack (push, 1)
typedef struct {
UINT32 BinaryLength;
EFI_HII_PACKAGE_HEADER PackageHeader;
} EDKII_AUTOGEN_PACKAGES_HEADER;
#pragma pack (pop)
@param[in] PackageListGuid The GUID of the package list.
@param[in] DeviceHandle If not NULL, the Device Handle on which
an instance of DEVICE_PATH_PROTOCOL is installed.
This Device Handle uniquely defines the device that
the added packages are associated with.
@param[in] ... The variable argument list that contains pointers
to packages terminated by a NULL.
@retval NULL A HII Handle has already been registered in the HII Database with
the same PackageListGuid.
@retval NULL The HII Handle could not be created.
@retval NULL An empty list of packages was passed in.
@retval NULL All packages are empty.
@retval Other The HII Handle associated with the newly registered package list.
**/
EFI_HII_HANDLE
EFIAPI
HiiAddPackages (
IN CONST EFI_GUID *PackageListGuid,
IN EFI_HANDLE DeviceHandle OPTIONAL,
...
)
{
EFI_STATUS Status;
VA_LIST Args;
UINT32 *Package;
EFI_HII_PACKAGE_LIST_HEADER *PackageListHeader;
EFI_HII_HANDLE HiiHandle;
UINT32 Length;
UINT8 *Data;
ASSERT (PackageListGuid != NULL);
//
// Calculate the length of all the packages in the variable argument list
//
for (Length = 0, VA_START (Args, DeviceHandle); (Package = VA_ARG (Args, UINT32 *)) != NULL; ) {
Length += (ReadUnaligned32 (Package) - sizeof (UINT32));
}
VA_END (Args);
//
// If there are no packages in the variable argument list or all the packages
// are empty, then return a NULL HII Handle
//
if (Length == 0) {
return NULL;
}
//
// Add the length of the Package List Header and the terminating Package Header
//
Length += sizeof (EFI_HII_PACKAGE_LIST_HEADER) + sizeof (EFI_HII_PACKAGE_HEADER);
//
// Allocate the storage for the entire Package List
//
PackageListHeader = AllocateZeroPool (Length);
//
// If the Package List can not be allocated, then return a NULL HII Handle
//
if (PackageListHeader == NULL) {
return NULL;
}
//
// Fill in the GUID and Length of the Package List Header
//
CopyGuid (&PackageListHeader->PackageListGuid, PackageListGuid);
PackageListHeader->PackageLength = Length;
//
// Initialize a pointer to the beginning if the Package List data
//
Data = (UINT8 *)(PackageListHeader + 1);
//
// Copy the data from each package in the variable argument list
//
for (VA_START (Args, DeviceHandle); (Package = VA_ARG (Args, UINT32 *)) != NULL; ) {
Length = ReadUnaligned32 (Package) - sizeof (UINT32);
CopyMem (Data, Package + 1, Length);
Data += Length;
}
VA_END (Args);
//
// Append a package of type EFI_HII_PACKAGE_END to mark the end of the package list
//
CopyMem (Data, &mEndOfPakageList, sizeof (mEndOfPakageList));
//
// Register the package list with the HII Database
//
Status = gHiiDatabase->NewPackageList (
gHiiDatabase,
PackageListHeader,
DeviceHandle,
&HiiHandle
);
if (EFI_ERROR (Status)) {
HiiHandle = NULL;
}
//
// Free the allocated package list
//
FreePool (PackageListHeader);
//
// Return the new HII Handle
//
return HiiHandle;
}
/**
Removes a package list from the HII database.
If HiiHandle is NULL, then ASSERT.
If HiiHandle is not a valid EFI_HII_HANDLE in the HII database, then ASSERT.
@param[in] HiiHandle The handle that was previously registered in the HII database
**/
VOID
EFIAPI
HiiRemovePackages (
IN EFI_HII_HANDLE HiiHandle
)
{
EFI_STATUS Status;
ASSERT (HiiHandle != NULL);
Status = gHiiDatabase->RemovePackageList (gHiiDatabase, HiiHandle);
ASSERT_EFI_ERROR (Status);
}
/**
Retrieves the array of all the HII Handles or the HII handles of a specific
package list GUID in the HII Database.
This array is terminated with a NULL HII Handle.
This function allocates the returned array using AllocatePool().
The caller is responsible for freeing the array with FreePool().
@param[in] PackageListGuid An optional parameter that is used to request
HII Handles associated with a specific
Package List GUID. If this parameter is NULL,
then all the HII Handles in the HII Database
are returned. If this parameter is not NULL,
then zero or more HII Handles associated with
PackageListGuid are returned.
@retval NULL No HII handles were found in the HII database
@retval NULL The array of HII Handles could not be retrieved
@retval Other A pointer to the NULL terminated array of HII Handles
**/
EFI_HII_HANDLE *
EFIAPI
HiiGetHiiHandles (
IN CONST EFI_GUID *PackageListGuid OPTIONAL
)
{
EFI_STATUS Status;
UINTN HandleBufferLength;
EFI_HII_HANDLE TempHiiHandleBuffer;
EFI_HII_HANDLE *HiiHandleBuffer;
EFI_GUID Guid;
UINTN Index1;
UINTN Index2;
//
// Retrieve the size required for the buffer of all HII handles.
//
HandleBufferLength = 0;
Status = gHiiDatabase->ListPackageLists (
gHiiDatabase,
EFI_HII_PACKAGE_TYPE_ALL,
NULL,
&HandleBufferLength,
&TempHiiHandleBuffer
);
//
// If ListPackageLists() returns EFI_SUCCESS for a zero size,
// then there are no HII handles in the HII database. If ListPackageLists()
// returns an error other than EFI_BUFFER_TOO_SMALL, then there are no HII
// handles in the HII database.
//
if (Status != EFI_BUFFER_TOO_SMALL) {
//
// Return NULL if the size can not be retrieved, or if there are no HII
// handles in the HII Database
//
return NULL;
}
//
// Allocate the array of HII handles to hold all the HII Handles and a NULL terminator
//
HiiHandleBuffer = AllocateZeroPool (HandleBufferLength + sizeof (EFI_HII_HANDLE));
if (HiiHandleBuffer == NULL) {
//
// Return NULL if allocation fails.
//
return NULL;
}
//
// Retrieve the array of HII Handles in the HII Database
//
Status = gHiiDatabase->ListPackageLists (
gHiiDatabase,
EFI_HII_PACKAGE_TYPE_ALL,
NULL,
&HandleBufferLength,
HiiHandleBuffer
);
if (EFI_ERROR (Status)) {
//
// Free the buffer and return NULL if the HII handles can not be retrieved.
//
FreePool (HiiHandleBuffer);
return NULL;
}
if (PackageListGuid == NULL) {
//
// Return the NULL terminated array of HII handles in the HII Database
//
return HiiHandleBuffer;
} else {
for (Index1 = 0, Index2 = 0; HiiHandleBuffer[Index1] != NULL; Index1++) {
Status = InternalHiiExtractGuidFromHiiHandle (HiiHandleBuffer[Index1], &Guid);
ASSERT_EFI_ERROR (Status);
if (CompareGuid (&Guid, PackageListGuid)) {
HiiHandleBuffer[Index2++] = HiiHandleBuffer[Index1];
}
}
if (Index2 > 0) {
HiiHandleBuffer[Index2] = NULL;
return HiiHandleBuffer;
} else {
FreePool (HiiHandleBuffer);
return NULL;
}
}
}
/**
Converts all hex dtring characters in range ['A'..'F'] to ['a'..'f'] for
hex digits that appear between a '=' and a '&' in a config string.
If ConfigString is NULL, then ASSERT().
@param[in] ConfigString Pointer to a Null-terminated Unicode string.
@return Pointer to the Null-terminated Unicode result string.
**/
EFI_STRING
EFIAPI
InternalHiiLowerConfigString (
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 ConfigString;
}
/**
Uses the BlockToConfig() service of the Config Routing Protocol to
convert <ConfigRequest> and a buffer to a <ConfigResp>
If ConfigRequest is NULL, then ASSERT().
If Block is NULL, then ASSERT().
@param[in] ConfigRequest Pointer to a Null-terminated Unicode string.
@param[in] Block Pointer to a block of data.
@param[in] BlockSize The zie, in bytes, of Block.
@retval NULL The <ConfigResp> string could not be generated.
@retval Other Pointer to the Null-terminated Unicode <ConfigResp> string.
**/
EFI_STRING
EFIAPI
InternalHiiBlockToConfig (
IN CONST EFI_STRING ConfigRequest,
IN CONST UINT8 *Block,
IN UINTN BlockSize
)
{
EFI_STATUS Status;
EFI_STRING ConfigResp;
CHAR16 *Progress;
ASSERT (ConfigRequest != NULL);
ASSERT (Block != NULL);
//
// Convert <ConfigRequest> to <ConfigResp>
//
Status = gHiiConfigRouting->BlockToConfig (
gHiiConfigRouting,
ConfigRequest,
Block,
BlockSize,
&ConfigResp,
&Progress
);
if (EFI_ERROR (Status)) {
return NULL;
}
return ConfigResp;
}
/**
Uses the BrowserCallback() service of the Form Browser Protocol to retrieve
or set uncommitted data. If sata i being retrieved, then the buffer is
allocated using AllocatePool(). The caller is then responsible for freeing
the buffer using FreePool().
@param[in] VariableGuid Pointer to an EFI_GUID structure. This is an optional
parameter that may be NULL.
@param[in] VariableName Pointer to a Null-terminated Unicode string. This
is an optional parameter that may be NULL.
@param[in] SetResultsData If not NULL, then this parameter specified the buffer
of uncommited data to set. If this parameter is NULL,
then the caller is requesting to get the uncommited data
from the Form Browser.
@retval NULL The uncommitted data could not be retrieved.
@retval Other A pointer to a buffer containing the uncommitted data.
**/
EFI_STRING
EFIAPI
InternalHiiBrowserCallback (
IN CONST EFI_GUID *VariableGuid, OPTIONAL
IN CONST CHAR16 *VariableName, OPTIONAL
IN CONST EFI_STRING SetResultsData OPTIONAL
)
{
EFI_STATUS Status;
UINTN ResultsDataSize;
EFI_STRING ResultsData;
CHAR16 TempResultsData;
//
// Locate protocols
//
if (mUefiFormBrowser2 == NULL) {
Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **) &mUefiFormBrowser2);
if (EFI_ERROR (Status) || mUefiFormBrowser2 == NULL) {
return NULL;
}
}
ResultsDataSize = 0;
if (SetResultsData != NULL) {
//
// Request to to set data in the uncommitted browser state information
//
ResultsData = SetResultsData;
} else {
//
// Retrieve the length of the buffer required ResultsData from the Browser Callback
//
Status = mUefiFormBrowser2->BrowserCallback (
mUefiFormBrowser2,
&ResultsDataSize,
&TempResultsData,
TRUE,
VariableGuid,
VariableName
);
if (!EFI_ERROR (Status)) {
//
// No Resluts Data, only allocate one char for '\0'
//
ResultsData = AllocateZeroPool (sizeof (CHAR16));
return ResultsData;
}
if (Status != EFI_BUFFER_TOO_SMALL) {
return NULL;
}
//
// Allocate the ResultsData buffer
//
ResultsData = AllocateZeroPool (ResultsDataSize);
if (ResultsData == NULL) {
return NULL;
}
}
//
// Retrieve or set the ResultsData from the Browser Callback
//
Status = mUefiFormBrowser2->BrowserCallback (
mUefiFormBrowser2,
&ResultsDataSize,
ResultsData,
(BOOLEAN)(SetResultsData == NULL),
VariableGuid,
VariableName
);
if (EFI_ERROR (Status)) {
return NULL;
}
return ResultsData;
}
/**
Allocates and returns a Null-terminated Unicode <ConfigHdr> string using routing
information that includes a GUID, an optional Unicode string name, and a device
path. The string returned is allocated with AllocatePool(). The caller is
responsible for freeing the allocated string with FreePool().
The format of a <ConfigHdr> is as follows:
GUID=<HexCh>32&NAME=<Char>NameLength&PATH=<HexChar>DevicePathSize<Null>
@param[in] Guid Pointer to an EFI_GUID that is the routing information
GUID. Each of the 16 bytes in Guid is converted to
a 2 Unicode character hexidecimal string. This is
an optional parameter that may be NULL.
@param[in] Name Pointer to a Null-terminated Unicode string that is
the routing information NAME. This is an optional
parameter that may be NULL. Each 16-bit Unicode
character in Name is converted to a 4 character Unicode
hexidecimal string.
@param[in] DriverHandle The driver handle which supports a Device Path Protocol
that is the routing information PATH. Each byte of
the Device Path associated with DriverHandle is converted
to a 2 Unicode character hexidecimal string.
@retval NULL DriverHandle does not support the Device Path Protocol.
@retval Other A pointer to the Null-terminate Unicode <ConfigHdr> string
**/
EFI_STRING
EFIAPI
HiiConstructConfigHdr (
IN CONST EFI_GUID *Guid, OPTIONAL
IN CONST CHAR16 *Name, OPTIONAL
IN EFI_HANDLE DriverHandle
)
{
UINTN NameLength;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
UINTN DevicePathSize;
CHAR16 *String;
CHAR16 *ReturnString;
UINTN Index;
UINT8 *Buffer;
//
// Compute the length of Name in Unicode characters.
// If Name is NULL, then the length is 0.
//
NameLength = 0;
if (Name != NULL) {
NameLength = StrLen (Name);
}
DevicePath = NULL;
DevicePathSize = 0;
//
// Retrieve DevicePath Protocol associated with DriverHandle
//
if (DriverHandle != NULL) {
DevicePath = DevicePathFromHandle (DriverHandle);
if (DevicePath == NULL) {
return NULL;
}
//
// Compute the size of the device path in bytes
//
DevicePathSize = GetDevicePathSize (DevicePath);
}
//
// GUID=<HexCh>32&NAME=<Char>NameLength&PATH=<HexChar>DevicePathSize <Null>
// | 5 | sizeof (EFI_GUID) * 2 | 6 | NameStrLen*4 | 6 | DevicePathSize * 2 | 1 |
//
String = AllocateZeroPool ((5 + sizeof (EFI_GUID) * 2 + 6 + NameLength * 4 + 6 + DevicePathSize * 2 + 1) * sizeof (CHAR16));
if (String == NULL) {
return NULL;
}
//
// Start with L"GUID="
//
ReturnString = StrCpy (String, L"GUID=");
String += StrLen (String);
if (Guid != NULL) {
//
// Append Guid converted to <HexCh>32
//
for (Index = 0, Buffer = (UINT8 *)Guid; Index < sizeof (EFI_GUID); Index++) {
String += UnicodeValueToString (String, PREFIX_ZERO | RADIX_HEX, *(Buffer++), 2);
}
}
//
// Append L"&NAME="
//
StrCpy (String, L"&NAME=");
String += StrLen (String);
if (Name != NULL) {
//
// Append Name converted to <Char>NameLength
//
for (; *Name != L'\0'; Name++) {
String += UnicodeValueToString (String, PREFIX_ZERO | RADIX_HEX, *Name, 4);
}
}
//
// Append L"&PATH="
//
StrCpy (String, L"&PATH=");
String += StrLen (String);
//
// Append the device path associated with DriverHandle converted to <HexChar>DevicePathSize
//
for (Index = 0, Buffer = (UINT8 *)DevicePath; Index < DevicePathSize; Index++) {
String += UnicodeValueToString (String, PREFIX_ZERO | RADIX_HEX, *(Buffer++), 2);
}
//
// Null terminate the Unicode string
//
*String = L'\0';
//
// Convert all hex digits in range [A-F] in the configuration header to [a-f]
//
return InternalHiiLowerConfigString (ReturnString);
}
/**
Convert the hex UNICODE encoding string of UEFI GUID, NAME or device path
to binary buffer from <ConfigHdr>.
This is a internal function.
@param String UEFI configuration string.
@param Flag Flag specifies what type buffer will be retrieved.
@param Buffer Binary of Guid, Name or Device path.
@retval EFI_INVALID_PARAMETER Any incoming parameter is invalid.
@retval EFI_OUT_OF_RESOURCES Lake of resources to store neccesary structures.
@retval EFI_SUCCESS The buffer data is retrieved and translated to
binary format.
**/
EFI_STATUS
InternalHiiGetBufferFromString (
IN EFI_STRING String,
IN UINT8 Flag,
OUT UINT8 **Buffer
)
{
UINTN Length;
EFI_STRING ConfigHdr;
CHAR16 *StringPtr;
UINT8 *DataBuffer;
CHAR16 TemStr[5];
UINTN Index;
UINT8 DigitUint8;
if (String == NULL || Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
DataBuffer = NULL;
StringPtr = NULL;
ConfigHdr = String;
//
// The content between 'GUID', 'NAME', 'PATH' of <ConfigHdr> and '&' of next element
// or '\0' (end of configuration string) is the UNICODE %02x bytes encoding string.
//
for (Length = 0; *String != 0 && *String != L'&'; String++, Length++);
switch (Flag) {
case GUID_CONFIG_STRING_TYPE:
case PATH_CONFIG_STRING_TYPE:
//
// The data in <ConfigHdr> is encoded as hex UNICODE %02x bytes in the same order
// as the device path and Guid resides in RAM memory.
// Translate the data into binary.
//
DataBuffer = (UINT8 *) AllocateZeroPool ((Length + 1) / 2);
if (DataBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Convert binary byte one by one
//
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < Length; Index ++) {
TemStr[0] = ConfigHdr[Index];
DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
if ((Index & 1) == 0) {
DataBuffer [Index/2] = DigitUint8;
} else {
DataBuffer [Index/2] = (UINT8) ((DataBuffer [Index/2] << 4) + DigitUint8);
}
}
*Buffer = DataBuffer;
break;
case NAME_CONFIG_STRING_TYPE:
//
// Convert Config String to Unicode String, e.g. "0041004200430044" => "ABCD"
//
//
// Add the tailling char L'\0'
//
DataBuffer = (UINT8 *) AllocateZeroPool ((Length/4 + 1) * sizeof (CHAR16));
if (DataBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Convert character one by one
//
StringPtr = (CHAR16 *) DataBuffer;
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < Length; Index += 4) {
StrnCpy (TemStr, ConfigHdr + Index, 4);
StringPtr[Index/4] = (CHAR16) StrHexToUint64 (TemStr);
}
//
// Add tailing L'\0' character
//
StringPtr[Index/4] = L'\0';
*Buffer = DataBuffer;
break;
default:
return EFI_INVALID_PARAMETER;
break;
}
return EFI_SUCCESS;
}
/**
This function checks VarOffset and VarWidth is in the block range.
@param BlockArray The block array is to be checked.
@param VarOffset Offset of var to the structure
@param VarWidth Width of var.
@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 *BlockArray,
IN UINT16 VarOffset,
IN UINT16 VarWidth
)
{
LIST_ENTRY *Link;
IFR_BLOCK_DATA *BlockData;
//
// No Request Block array, all vars are got.
//
if (BlockArray == NULL) {
return TRUE;
}
//
// Check the input var is in the request block range.
//
for (Link = BlockArray->Entry.ForwardLink; Link != &BlockArray->Entry; Link = Link->ForwardLink) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if ((VarOffset >= BlockData->Offset) && ((VarOffset + VarWidth) <= (BlockData->Offset + BlockData->Width))) {
return TRUE;
}
}
return FALSE;
}
/**
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>
@param ValueString String in <BlockConfig> format and points to the
first character of <Number>.
@param ValueData The output value. Caller takes the responsibility
to free memory.
@param ValueLength Length of the <Number>, in characters.
@retval EFI_OUT_OF_RESOURCES Insufficient resources to store neccessary
structures.
@retval EFI_SUCCESS Value of <Number> is outputted in Number
successfully.
**/
EFI_STATUS
EFIAPI
InternalHiiGetValueOfNumber (
IN EFI_STRING ValueString,
OUT UINT8 **ValueData,
OUT UINTN *ValueLength
)
{
EFI_STRING StringPtr;
UINTN Length;
UINT8 *Buf;
UINT8 DigitUint8;
UINTN Index;
CHAR16 TemStr[2];
ASSERT (ValueString != NULL && ValueData != NULL && ValueLength != NULL);
ASSERT (*ValueString != L'\0');
//
// Get the length of value string
//
StringPtr = ValueString;
while (*StringPtr != L'\0' && *StringPtr != L'&') {
StringPtr++;
}
Length = StringPtr - ValueString;
//
// Allocate buffer to store the value
//
Buf = (UINT8 *) AllocateZeroPool ((Length + 1) / 2);
if (Buf == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Convert character one by one to the value buffer
//
ZeroMem (TemStr, sizeof (TemStr));
for (Index = 0; Index < Length; Index ++) {
TemStr[0] = ValueString[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]);
}
}
//
// Set the converted value and string length.
//
*ValueData = Buf;
*ValueLength = Length;
return EFI_SUCCESS;
}
/**
This internal function parses IFR data to validate current setting.
@param ConfigResp ConfigResp string contains the current setting.
@param HiiPackageList Point to Hii package list.
@param PackageListLength The length of the pacakge.
@param VarGuid Guid of the buffer storage.
@param VarName Name of the buffer storage.
@retval EFI_SUCCESS The current setting is valid.
@retval EFI_OUT_OF_RESOURCES The memory is not enough.
@retval EFI_INVALID_PARAMETER The config string or the Hii package is invalid.
**/
EFI_STATUS
EFIAPI
InternalHiiValidateCurrentSetting (
IN EFI_STRING ConfigResp,
IN EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList,
IN UINTN PackageListLength,
IN EFI_GUID *VarGuid,
IN CHAR16 *VarName
)
{
IFR_BLOCK_DATA *CurrentBlockArray;
IFR_BLOCK_DATA *BlockData;
IFR_BLOCK_DATA *NewBlockData;
IFR_BLOCK_DATA VarBlockData;
EFI_STRING StringPtr;
UINTN Length;
UINT8 *TmpBuffer;
UINT16 Offset;
UINT16 Width;
UINT64 VarValue;
LIST_ENTRY *Link;
UINT8 *VarBuffer;
UINTN MaxBufferSize;
EFI_STATUS Status;
EFI_HII_PACKAGE_HEADER PacakgeHeader;
UINT32 PackageOffset;
UINT8 *PackageData;
UINTN IfrOffset;
EFI_IFR_OP_HEADER *IfrOpHdr;
EFI_IFR_VARSTORE *IfrVarStore;
EFI_IFR_ONE_OF *IfrOneOf;
EFI_IFR_NUMERIC *IfrNumeric;
EFI_IFR_ONE_OF_OPTION *IfrOneOfOption;
EFI_IFR_CHECKBOX *IfrCheckBox;
EFI_IFR_STRING *IfrString;
CHAR8 *VarStoreName;
UINTN Index;
//
// 1. Get the current setting to current block data array and Convert them into VarBuffer
//
//
// Skip ConfigHdr string
//
StringPtr = ConfigResp;
StringPtr = StrStr (ConfigResp, L"&OFFSET");
if (StringPtr == NULL) {
//
// No ConfigBlock value is required to be validated.
// EFI_SUCCESS directly return.
//
return EFI_SUCCESS;
}
//
// Initialize the local variables.
//
Index = 0;
VarStoreName = NULL;
Status = EFI_SUCCESS;
BlockData = NULL;
NewBlockData = NULL;
TmpBuffer = NULL;
MaxBufferSize = HII_LIB_DEFAULT_VARSTORE_SIZE;
VarBuffer = AllocateZeroPool (MaxBufferSize);
if (VarBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Init CurrentBlockArray
//
CurrentBlockArray = (IFR_BLOCK_DATA *) AllocateZeroPool (sizeof (IFR_BLOCK_DATA));
if (CurrentBlockArray == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
InitializeListHead (&CurrentBlockArray->Entry);
//
// 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) {
//
// Skip the &OFFSET= string
//
StringPtr += StrLen (L"&OFFSET=");
//
// Get Offset
//
Status = InternalHiiGetValueOfNumber (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);
TmpBuffer = NULL;
StringPtr += Length;
if (StrnCmp (StringPtr, L"&WIDTH=", StrLen (L"&WIDTH=")) != 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
StringPtr += StrLen (L"&WIDTH=");
//
// Get Width
//
Status = InternalHiiGetValueOfNumber (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);
TmpBuffer = NULL;
StringPtr += Length;
if (*StringPtr != 0 && *StringPtr != L'&') {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if (StrnCmp (StringPtr, L"&VALUE=", StrLen (L"&VALUE=")) != 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
StringPtr += StrLen (L"&VALUE=");
//
// Get Value
//
Status = InternalHiiGetValueOfNumber (StringPtr, &TmpBuffer, &Length);
if (EFI_ERROR (Status)) {
goto Done;
}
StringPtr += Length;
if (*StringPtr != 0 && *StringPtr != L'&') {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether VarBuffer is enough
//
if ((UINTN) (Offset + Width) > MaxBufferSize) {
VarBuffer = ReallocatePool (
MaxBufferSize,
Offset + Width + HII_LIB_DEFAULT_VARSTORE_SIZE,
VarBuffer
);
if (VarBuffer == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
MaxBufferSize = Offset + Width + HII_LIB_DEFAULT_VARSTORE_SIZE;
}
//
// Update the Block with configuration info
//
CopyMem (VarBuffer + Offset, TmpBuffer, Width);
FreePool (TmpBuffer);
TmpBuffer = NULL;
//
// Set new Block Data
//
NewBlockData = (IFR_BLOCK_DATA *) AllocateZeroPool (sizeof (IFR_BLOCK_DATA));
if (NewBlockData == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
NewBlockData->Offset = Offset;
NewBlockData->Width = Width;
//
// Insert the new block data into the block data array.
//
for (Link = CurrentBlockArray->Entry.ForwardLink; Link != &CurrentBlockArray->Entry; Link = Link->ForwardLink) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
if (NewBlockData->Offset == BlockData->Offset) {
if (NewBlockData->Width > BlockData->Width) {
BlockData->Width = NewBlockData->Width;
}
FreePool (NewBlockData);
break;
} else if (NewBlockData->Offset < BlockData->Offset) {
//
// Insert new block data as the previous one of this link.
//
InsertTailList (Link, &NewBlockData->Entry);
break;
}
}
//
// Insert new block data into the array tail.
//
if (Link == &CurrentBlockArray->Entry) {
InsertTailList (Link, &NewBlockData->Entry);
}
//
// If '\0', parsing is finished.
//
if (*StringPtr == 0) {
break;
}
//
// Go to next ConfigBlock
//
}
//
// Merge the aligned block data into the single block data.
//
Link = CurrentBlockArray->Entry.ForwardLink;
while ((Link != &CurrentBlockArray->Entry) && (Link->ForwardLink != &CurrentBlockArray->Entry)) {
BlockData = BASE_CR (Link, IFR_BLOCK_DATA, Entry);
NewBlockData = BASE_CR (Link->ForwardLink, IFR_BLOCK_DATA, Entry);
if ((NewBlockData->Offset >= BlockData->Offset) && (NewBlockData->Offset <= (BlockData->Offset + BlockData->Width))) {
if ((NewBlockData->Offset + NewBlockData->Width) > (BlockData->Offset + BlockData->Width)) {
BlockData->Width = (UINT16) (NewBlockData->Offset + NewBlockData->Width - BlockData->Offset);
}
RemoveEntryList (Link->ForwardLink);
FreePool (NewBlockData);
continue;
}
Link = Link->ForwardLink;
}
if (IsListEmpty (&CurrentBlockArray->Entry)) {
Status = EFI_SUCCESS;
goto Done;
}
//
// 2. Check IFR value is in block data, then Validate Value
//
ZeroMem (&VarBlockData, sizeof (VarBlockData));
VarValue = 0;
IfrVarStore = NULL;
PackageOffset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);
while (PackageOffset < PackageListLength) {
CopyMem (&PacakgeHeader, (UINT8 *) HiiPackageList + PackageOffset, sizeof (PacakgeHeader));
//
// Parse IFR opcode from the form package.
//
if (PacakgeHeader.Type == EFI_HII_PACKAGE_FORMS) {
IfrOffset = sizeof (PacakgeHeader);
PackageData = (UINT8 *) HiiPackageList + PackageOffset;
while (IfrOffset < PacakgeHeader.Length) {
IfrOpHdr = (EFI_IFR_OP_HEADER *) (PackageData + IfrOffset);
//
// Validate current setting to the value built in IFR opcode
//
switch (IfrOpHdr->OpCode) {
case EFI_IFR_VARSTORE_OP:
//
// VarStoreId has been found. No further found.
//
if (IfrVarStore != NULL) {
break;
}
//
// Find the matched VarStoreId to the input VarGuid and VarName
//
IfrVarStore = (EFI_IFR_VARSTORE *) IfrOpHdr;
if (CompareGuid ((EFI_GUID *) (VOID *) &IfrVarStore->Guid, VarGuid)) {
VarStoreName = (CHAR8 *) IfrVarStore->Name;
for (Index = 0; VarStoreName[Index] != 0; Index ++) {
if ((CHAR16) VarStoreName[Index] != VarName[Index]) {
break;
}
}
//
// The matched VarStore is found.
//
if ((VarStoreName[Index] != 0) || (VarName[Index] != 0)) {
IfrVarStore = NULL;
}
} else {
IfrVarStore = NULL;
}
break;
case EFI_IFR_FORM_OP:
case EFI_IFR_FORM_MAP_OP:
//
// Check the matched VarStoreId is found.
//
if (IfrVarStore == NULL) {
Status = EFI_SUCCESS;
goto Done;
}
break;
case EFI_IFR_ONE_OF_OP:
//
// Check whether current value is the one of option.
//
//
// OneOf question is not in IFR Form. This IFR form is not valid.
//
if (IfrVarStore == NULL) {
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 != IfrVarStore->VarStoreId) {
break;
}
//
// Get Offset by Question header and Width by DataType Flags
//
Offset = IfrOneOf->Question.VarStoreInfo.VarOffset;
Width = (UINT16) (1 << (IfrOneOf->Flags & EFI_IFR_NUMERIC_SIZE));
//
// Check whether this question is in current block array.
//
if (!BlockArrayCheck (CurrentBlockArray, Offset, Width)) {
//
// This question is not in the current configuration string. Skip it.
//
break;
}
//
// Check this var question is in the var storage
//
if ((Offset + Width) > IfrVarStore->Size) {
//
// This question exceeds the var store size.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Get the current value for oneof opcode
//
VarValue = 0;
CopyMem (&VarValue, VarBuffer + Offset, Width);
//
// Set Block Data, to be checked in the following Oneof option opcode.
//
VarBlockData.Offset = Offset;
VarBlockData.Width = Width;
VarBlockData.OpCode = IfrOpHdr->OpCode;
VarBlockData.Scope = IfrOpHdr->Scope;
break;
case EFI_IFR_NUMERIC_OP:
//
// Check the current value is in the numeric range.
//
//
// Numeric question is not in IFR Form. This IFR form is not valid.
//
if (IfrVarStore == NULL) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrNumeric = (EFI_IFR_NUMERIC *) IfrOpHdr;
if (IfrNumeric->Question.VarStoreId != IfrVarStore->VarStoreId) {
break;
}
//
// Get Offset by Question header and Width by DataType Flags
//
Offset = IfrNumeric->Question.VarStoreInfo.VarOffset;
Width = (UINT16) (1 << (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE));
//
// Check whether this question is in current block array.
//
if (!BlockArrayCheck (CurrentBlockArray, Offset, Width)) {
//
// This question is not in the current configuration string. Skip it.
//
break;
}
//
// Check this var question is in the var storage
//
if ((Offset + Width) > IfrVarStore->Size) {
//
// This question exceeds the var store size.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check the current value is in the numeric range.
//
VarValue = 0;
CopyMem (&VarValue, VarBuffer + Offset, Width);
switch (IfrNumeric->Flags & EFI_IFR_NUMERIC_SIZE) {
case EFI_IFR_NUMERIC_SIZE_1:
if ((UINT8) VarValue < IfrNumeric->data.u8.MinValue || (UINT8) VarValue > IfrNumeric->data.u8.MaxValue) {
//
// Not in the valid range.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
break;
case EFI_IFR_NUMERIC_SIZE_2:
if ((UINT16) VarValue < IfrNumeric->data.u16.MinValue || (UINT16) VarValue > IfrNumeric->data.u16.MaxValue) {
//
// Not in the valid range.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
break;
case EFI_IFR_NUMERIC_SIZE_4:
if ((UINT32) VarValue < IfrNumeric->data.u32.MinValue || (UINT32) VarValue > IfrNumeric->data.u32.MaxValue) {
//
// Not in the valid range.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
break;
case EFI_IFR_NUMERIC_SIZE_8:
if ((UINT64) VarValue < IfrNumeric->data.u64.MinValue || (UINT64) VarValue > IfrNumeric->data.u64.MaxValue) {
//
// Not in the valid range.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
break;
}
break;
case EFI_IFR_CHECKBOX_OP:
//
// Check value is BOOLEAN type, only 0 and 1 is valid.
//
//
// CheckBox question is not in IFR Form. This IFR form is not valid.
//
if (IfrVarStore == NULL) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrCheckBox = (EFI_IFR_CHECKBOX *) IfrOpHdr;
if (IfrCheckBox->Question.VarStoreId != IfrVarStore->VarStoreId) {
break;
}
//
// Get Offset by Question header
//
Offset = IfrCheckBox->Question.VarStoreInfo.VarOffset;
Width = sizeof (BOOLEAN);
//
// Check whether this question is in current block array.
//
if (!BlockArrayCheck (CurrentBlockArray, Offset, Width)) {
//
// This question is not in the current configuration string. Skip it.
//
break;
}
//
// Check this var question is in the var storage
//
if ((Offset + Width) > IfrVarStore->Size) {
//
// This question exceeds the var store size.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Boolean type, only 1 and 0 is valid.
//
if (*(VarBuffer + Offset) > 1) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
break;
case EFI_IFR_STRING_OP:
//
// Check current string length is less than maxsize
//
//
// CheckBox question is not in IFR Form. This IFR form is not valid.
//
if (IfrVarStore == NULL) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check whether this question is for the requested varstore.
//
IfrString = (EFI_IFR_STRING *) IfrOpHdr;
if (IfrString->Question.VarStoreId != IfrVarStore->VarStoreId) {
break;
}
//
// Get Offset/Width by Question header and OneOf Flags
//
Offset = IfrString->Question.VarStoreInfo.VarOffset;
Width = (UINT16) (IfrString->MaxSize * sizeof (UINT16));
//
// Check whether this question is in current block array.
//
if (!BlockArrayCheck (CurrentBlockArray, Offset, Width)) {
//
// This question is not in the current configuration string. Skip it.
//
break;
}
//
// Check this var question is in the var storage
//
if ((Offset + Width) > IfrVarStore->Size) {
//
// This question exceeds the var store size.
//
Status = EFI_INVALID_PARAMETER;
goto Done;
}
//
// Check current string length is less than maxsize
//
if (StrSize ((CHAR16 *) (VarBuffer + Offset)) > Width) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
break;
case EFI_IFR_ONE_OF_OPTION_OP:
//
// Opcode Scope is zero. This one of option is not to be checked.
//
if (VarBlockData.Scope == 0) {
break;
}
//
// Only check for OneOf and OrderList opcode
//
IfrOneOfOption = (EFI_IFR_ONE_OF_OPTION *) IfrOpHdr;
if (VarBlockData.OpCode == EFI_IFR_ONE_OF_OP) {
//
// Check current value is the value of one of option.
//
if (VarValue == IfrOneOfOption->Value.u64) {
//
// The value is one of option value.
// Set OpCode to Zero, don't need check again.
//
VarBlockData.OpCode = 0;
}
}
break;
case EFI_IFR_END_OP:
//
// Decrease opcode scope for the validated opcode
//
if (VarBlockData.Scope > 0) {
VarBlockData.Scope --;
}
//
// OneOf value doesn't belong to one of option value.
//
if ((VarBlockData.Scope == 0) && (VarBlockData.OpCode == EFI_IFR_ONE_OF_OP)) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
break;
default:
//
// Increase Scope for the validated opcode
//
if (VarBlockData.Scope > 0) {
VarBlockData.Scope = (UINT8) (VarBlockData.Scope + IfrOpHdr->Scope);
}
break;
}
//
// Go to the next opcode
//
IfrOffset += IfrOpHdr->Length;
}
//
// Only one form is in a package list.
//
break;
}
//
// Go to next package.
//
PackageOffset += PacakgeHeader.Length;
}
Done:
if (VarBuffer != NULL) {
FreePool (VarBuffer);
}
if (CurrentBlockArray != NULL) {
//
// Free Link Array CurrentBlockArray
//
while (!IsListEmpty (&CurrentBlockArray->Entry)) {
BlockData = BASE_CR (CurrentBlockArray->Entry.ForwardLink, IFR_BLOCK_DATA, Entry);
RemoveEntryList (&BlockData->Entry);
FreePool (BlockData);
}
FreePool (CurrentBlockArray);
}
return Status;
}
/**
This function parses the input ConfigRequest string and its matched IFR code
string for setting default value and validating current setting.
1. For setting default action, Reset the default value specified by DefaultId
to the driver configuration got by Request string.
2. For validating current setting, Validate the current configuration
by parsing HII form IFR opcode.
NULL request string support depends on the ExportConfig interface of
HiiConfigRouting protocol in UEFI specification.
@param Request A null-terminated Unicode string in
<MultiConfigRequest> format. It can be NULL.
If it is NULL, all current configuration for the
entirety of the current HII database will be validated.
If it is NULL, all configuration for the
entirety of the current HII database will be reset.
@param DefaultId Specifies the type of defaults to retrieve only for setting default action.
@param ActionType Action supports setting defaults and validate current setting.
@retval TURE Action runs successfully.
@retval FALSE Action is not valid or Action can't be executed successfully..
**/
BOOLEAN
EFIAPI
InternalHiiIfrValueAction (
IN CONST EFI_STRING Request, OPTIONAL
IN UINT16 DefaultId,
IN UINT8 ActionType
)
{
EFI_STRING ConfigAltResp;
EFI_STRING ConfigAltHdr;
EFI_STRING ConfigResp;
EFI_STRING Progress;
EFI_STRING StringPtr;
EFI_STRING StringHdr;
EFI_STATUS Status;
EFI_HANDLE DriverHandle;
EFI_HANDLE TempDriverHandle;
EFI_HII_HANDLE *HiiHandleBuffer;
EFI_HII_HANDLE HiiHandle;
UINT32 Index;
EFI_GUID *VarGuid;
EFI_STRING VarName;
EFI_STRING_ID DefaultName;
UINT8 *PackageData;
UINTN IfrOffset;
EFI_IFR_OP_HEADER *IfrOpHdr;
EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;
UINT32 PackageOffset;
UINTN PackageListLength;
EFI_HII_PACKAGE_HEADER PacakgeHeader;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
ConfigAltResp = NULL;
ConfigResp = NULL;
VarGuid = NULL;
VarName = NULL;
DevicePath = NULL;
ConfigAltHdr = NULL;
HiiHandleBuffer = NULL;
Index = 0;
TempDriverHandle = NULL;
HiiHandle = NULL;
PackageData = NULL;
HiiPackageList = NULL;
//
// Only support set default and validate setting action.
//
if ((ActionType != ACTION_SET_DEFAUTL_VALUE) && (ActionType != ACTION_VALIDATE_SETTING)) {
return FALSE;
}
//
// Get the full requested value and deault value string.
//
if (Request != NULL) {
Status = gHiiConfigRouting->ExtractConfig (
gHiiConfigRouting,
Request,
&Progress,
&ConfigAltResp
);
} else {
Status = gHiiConfigRouting->ExportConfig (
gHiiConfigRouting,
&ConfigAltResp
);
}
if (EFI_ERROR (Status)) {
return FALSE;
}
StringPtr = ConfigAltResp;
while (StringPtr != L'\0') {
//
// 1. Find <ConfigHdr> GUID=...&NAME=...&PATH=...
//
StringHdr = StringPtr;
//
// Get Guid value
//
if (StrnCmp (StringPtr, L"GUID=", StrLen (L"GUID=")) != 0) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
StringPtr += StrLen (L"GUID=");
Status = InternalHiiGetBufferFromString (StringPtr, GUID_CONFIG_STRING_TYPE, (UINT8 **) &VarGuid);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Get Name value VarName
//
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=");
Status = InternalHiiGetBufferFromString (StringPtr, NAME_CONFIG_STRING_TYPE, (UINT8 **) &VarName);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Get Path value DevicePath
//
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=");
Status = InternalHiiGetBufferFromString (StringPtr, PATH_CONFIG_STRING_TYPE, (UINT8 **) &DevicePath);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Get the Driver handle by the got device path.
//
TempDevicePath = DevicePath;
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &TempDevicePath, &DriverHandle);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Find the matched Hii Handle for the found Driver handle
//
HiiHandleBuffer = HiiGetHiiHandles (NULL);
if (HiiHandleBuffer == NULL) {
Status = EFI_NOT_FOUND;
goto Done;
}
for (Index = 0; HiiHandleBuffer[Index] != NULL; Index ++) {
gHiiDatabase->GetPackageListHandle (gHiiDatabase, HiiHandleBuffer[Index], &TempDriverHandle);
if (TempDriverHandle == DriverHandle) {
break;
}
}
HiiHandle = HiiHandleBuffer[Index];
FreePool (HiiHandleBuffer);
if (HiiHandle == NULL) {
//
// This request string has no its Hii package.
// Its default value and validating can't execute by parsing IFR data.
// Directly jump into the next ConfigAltResp string for another pair Guid, Name, and Path.
//
Status = EFI_SUCCESS;
goto NextConfigAltResp;
}
//
// 2. Get DefaultName string ID by parsing the PacakgeList
//
//
// Get HiiPackage by HiiHandle
//
PackageListLength = 0;
HiiPackageList = NULL;
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, HiiHandle, &PackageListLength, HiiPackageList);
//
// The return status should always be EFI_BUFFER_TOO_SMALL as input buffer's size is 0.
//
if (Status != EFI_BUFFER_TOO_SMALL) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
HiiPackageList = AllocatePool (PackageListLength);
if (HiiPackageList == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
//
// Get PackageList on HiiHandle
//
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, HiiHandle, &PackageListLength, HiiPackageList);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Parse the form package and get the default name string ID.
//
if (ActionType == ACTION_SET_DEFAUTL_VALUE) {
PackageOffset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);
Status = EFI_NOT_FOUND;
while (PackageOffset < PackageListLength) {
CopyMem (&PacakgeHeader, (UINT8 *) HiiPackageList + PackageOffset, sizeof (PacakgeHeader));
//
// Parse IFR opcode to get default store opcode
//
if (PacakgeHeader.Type == EFI_HII_PACKAGE_FORMS) {
IfrOffset = sizeof (PacakgeHeader);
PackageData = (UINT8 *) HiiPackageList + PackageOffset;
while (IfrOffset < PacakgeHeader.Length) {
IfrOpHdr = (EFI_IFR_OP_HEADER *) (PackageData + IfrOffset);
//
// Match DefaultId to find its DefaultName
//
if (IfrOpHdr->OpCode == EFI_IFR_DEFAULTSTORE_OP) {
if (((EFI_IFR_DEFAULTSTORE *) IfrOpHdr)->DefaultId == DefaultId) {
DefaultName = ((EFI_IFR_DEFAULTSTORE *) IfrOpHdr)->DefaultName;
Status = EFI_SUCCESS;
break;
}
}
IfrOffset += IfrOpHdr->Length;
}
//
// Only one form is in a package list.
//
break;
}
//
// Go to next package.
//
PackageOffset += PacakgeHeader.Length;
}
//
// Not found the matched default string ID
//
if (EFI_ERROR (Status)) {
Status = EFI_SUCCESS;
goto NextConfigAltResp;
}
}
//
// 3. Call ConfigRouting GetAltCfg(ConfigRoute, <ConfigResponse>, Guid, Name, DevicePath, AltCfgId, AltCfgResp)
// Get the default configuration string according to the found default name string ID.
//
Status = gHiiConfigRouting->GetAltConfig (
gHiiConfigRouting,
ConfigAltResp,
VarGuid,
VarName,
DevicePath,
(ActionType == ACTION_SET_DEFAUTL_VALUE) ? &DefaultName:NULL, // it can be NULL to get the current setting.
&ConfigResp
);
//
// The required setting can't be found. So, it is not required to be validated and set.
//
if (EFI_ERROR (Status)) {
Status = EFI_SUCCESS;
goto NextConfigAltResp;
}
//
// Only the ConfigHdr is found. Not any block data is found. No data is required to be validated and set.
//
if (StrStr (ConfigResp, L"&OFFSET=") == NULL) {
goto NextConfigAltResp;
}
//
// 4. Set the default configuration information or Validate current setting by parse IFR code.
// Current Setting is in ConfigResp, will be set into buffer, then check it again.
//
if (ActionType == ACTION_SET_DEFAUTL_VALUE) {
//
// Set the default configuration information.
//
Status = gHiiConfigRouting->RouteConfig (gHiiConfigRouting, ConfigResp, &Progress);
} else {
//
// Current Setting is in ConfigResp, will be set into buffer, then check it again.
//
Status = InternalHiiValidateCurrentSetting (ConfigResp, HiiPackageList, PackageListLength, VarGuid, VarName);
}
if (EFI_ERROR (Status)) {
goto Done;
}
NextConfigAltResp:
//
// Free the allocated pacakge buffer and the got ConfigResp string.
//
if (HiiPackageList != NULL) {
FreePool (HiiPackageList);
HiiPackageList = NULL;
}
if (ConfigResp != NULL) {
FreePool (ConfigResp);
ConfigResp = NULL;
}
//
// Free the allocated buffer.
//
FreePool (VarGuid);
VarGuid = NULL;
FreePool (VarName);
VarName = NULL;
FreePool (DevicePath);
DevicePath = NULL;
//
// 5. Jump to next ConfigAltResp for another Guid, Name, Path.
//
//
// Get and Skip ConfigHdr
//
while (*StringPtr != L'\0' && *StringPtr != L'&') {
StringPtr++;
}
if (*StringPtr == L'\0') {
break;
}
//
// Construct ConfigAltHdr string "&<ConfigHdr>&ALTCFG=\0"
// | 1 | StrLen (ConfigHdr) | 8 | 1 |
//
ConfigAltHdr = AllocateZeroPool ((1 + StringPtr - StringHdr + 8 + 1) * sizeof (CHAR16));
if (ConfigAltHdr == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
StrCpy (ConfigAltHdr, L"&");
StrnCat (ConfigAltHdr, StringHdr, StringPtr - StringHdr);
StrCat (ConfigAltHdr, L"&ALTCFG=");
//
// Skip all AltResp (AltConfigHdr ConfigBody) for the same ConfigHdr
//
while ((StringHdr = StrStr (StringPtr, ConfigAltHdr)) != NULL) {
StringPtr = StringHdr + StrLen (ConfigAltHdr);
if (*StringPtr == L'\0') {
break;
}
}
//
// Free the allocated ConfigAltHdr string
//
FreePool (ConfigAltHdr);
if (*StringPtr == L'\0') {
break;
}
//
// Find &GUID as the next ConfigHdr
//
StringPtr = StrStr (StringPtr, L"&GUID");
if (StringPtr == NULL) {
break;
}
//
// Skip char '&'
//
StringPtr ++;
}
Done:
if (VarGuid != NULL) {
FreePool (VarGuid);
}
if (VarName != NULL) {
FreePool (VarName);
}
if (DevicePath != NULL) {
FreePool (DevicePath);
}
if (ConfigResp != NULL) {
FreePool (ConfigResp);
}
if (ConfigAltResp != NULL) {
FreePool (ConfigAltResp);
}
if (HiiPackageList != NULL) {
FreePool (HiiPackageList);
}
if (EFI_ERROR (Status)) {
return FALSE;
}
return TRUE;
}
/**
Validate the current configuration by parsing HII form IFR opcode.
NULL request string support depends on the ExportConfig interface of
HiiConfigRouting protocol in UEFI specification.
@param Request A null-terminated Unicode string in
<MultiConfigRequest> format. It can be NULL.
If it is NULL, all current configuration for the
entirety of the current HII database will be validated.
@retval TURE Current configuration is valid.
@retval FALSE Current configuration is invalid.
**/
BOOLEAN
EFIAPI
HiiValidateSettings (
IN CONST EFI_STRING Request OPTIONAL
)
{
return InternalHiiIfrValueAction (Request, 0, ACTION_VALIDATE_SETTING);
}
/**
Reset the default value specified by DefaultId to the driver
configuration got by Request string.
NULL request string support depends on the ExportConfig interface of
HiiConfigRouting protocol in UEFI specification.
@param Request A null-terminated Unicode string in
<MultiConfigRequest> format. It can be NULL.
If it is NULL, all configuration for the
entirety of the current HII database will be reset.
@param DefaultId Specifies the type of defaults to retrieve.
@retval TURE The default value is set successfully.
@retval FALSE The default value can't be found and set.
**/
BOOLEAN
EFIAPI
HiiSetToDefaults (
IN CONST EFI_STRING Request, OPTIONAL
IN UINT16 DefaultId
)
{
return InternalHiiIfrValueAction (Request, DefaultId, ACTION_SET_DEFAUTL_VALUE);
}
/**
Determines if two values in config strings match.
Compares the substring between StartSearchString and StopSearchString in
FirstString to the substring between StartSearchString and StopSearchString
in SecondString. If the two substrings match, then TRUE is returned. If the
two substrings do not match, then FALSE is returned.
If FirstString is NULL, then ASSERT().
If SecondString is NULL, then ASSERT().
If StartSearchString is NULL, then ASSERT().
If StopSearchString is NULL, then ASSERT().
@param FirstString Pointer to the first Null-terminated Unicode string.
@param SecondString Pointer to the second Null-terminated Unicode string.
@param StartSearchString Pointer to the Null-terminated Unicode string that
marks the start of the value string to compare.
@param StopSearchString Pointer to the Null-terminated Unicode string that
marks the end of the value string to compare.
@retval FALSE StartSearchString is not present in FirstString.
@retval FALSE StartSearchString is not present in SecondString.
@retval FALSE StopSearchString is not present in FirstString.
@retval FALSE StopSearchString is not present in SecondString.
@retval FALSE The length of the substring in FirstString is not the
same length as the substring in SecondString.
@retval FALSE The value string in FirstString does not matche the
value string in SecondString.
@retval TRUE The value string in FirstString matches the value
string in SecondString.
**/
BOOLEAN
EFIAPI
InternalHiiCompareSubString (
IN CHAR16 *FirstString,
IN CHAR16 *SecondString,
IN CHAR16 *StartSearchString,
IN CHAR16 *StopSearchString
)
{
CHAR16 *EndFirstString;
CHAR16 *EndSecondString;
ASSERT (FirstString != NULL);
ASSERT (SecondString != NULL);
ASSERT (StartSearchString != NULL);
ASSERT (StopSearchString != NULL);
FirstString = StrStr (FirstString, StartSearchString);
if (FirstString == NULL) {
return FALSE;
}
SecondString = StrStr (SecondString, StartSearchString);
if (SecondString == NULL) {
return FALSE;
}
EndFirstString = StrStr (FirstString, StopSearchString);
if (EndFirstString == NULL) {
return FALSE;
}
EndSecondString = StrStr (SecondString, StopSearchString);
if (EndSecondString == NULL) {
return FALSE;
}
if ((EndFirstString - FirstString) != (EndSecondString - SecondString)) {
return FALSE;
}
return (BOOLEAN)(StrnCmp (FirstString, SecondString, EndFirstString - FirstString) == 0);
}
/**
Determines if the routing data specified by GUID and NAME match a <ConfigHdr>.
If ConfigHdr is NULL, then ASSERT().
@param[in] ConfigHdr Either <ConfigRequest> or <ConfigResp>.
@param[in] Guid GUID of the storage.
@param[in] Name NAME of the storage.
@retval TRUE Routing information matches <ConfigHdr>.
@retval FALSE Routing information does not match <ConfigHdr>.
**/
BOOLEAN
EFIAPI
HiiIsConfigHdrMatch (
IN CONST EFI_STRING ConfigHdr,
IN CONST EFI_GUID *Guid, OPTIONAL
IN CONST CHAR16 *Name OPTIONAL
)
{
EFI_STRING CompareConfigHdr;
BOOLEAN Result;
ASSERT (ConfigHdr != NULL);
//
// Use Guid and Name to generate a <ConfigHdr> string
//
CompareConfigHdr = HiiConstructConfigHdr (Guid, Name, NULL);
if (CompareConfigHdr == NULL) {
return FALSE;
}
Result = TRUE;
if (Guid != NULL) {
//
// Compare GUID value strings
//
Result = InternalHiiCompareSubString (ConfigHdr, CompareConfigHdr, L"GUID=", L"&NAME=");
}
if (Result && Name != NULL) {
//
// Compare NAME value strings
//
Result = InternalHiiCompareSubString (ConfigHdr, CompareConfigHdr, L"&NAME=", L"&PATH=");
}
//
// Free the <ConfigHdr> string
//
FreePool (CompareConfigHdr);
return Result;
}
/**
Retrieves uncommitted data from the Form Browser and converts it to a binary
buffer.
@param[in] VariableGuid Pointer to an EFI_GUID structure. This is an optional
parameter that may be NULL.
@param[in] VariableName Pointer to a Null-terminated Unicode string. This
is an optional parameter that may be NULL.
@param[in] BufferSize Length in bytes of buffer to hold retrieved data.
@param[out] Buffer Buffer of data to be updated.
@retval FALSE The uncommitted data could not be retrieved.
@retval TRUE The uncommitted data was retrieved.
**/
BOOLEAN
EFIAPI
HiiGetBrowserData (
IN CONST EFI_GUID *VariableGuid, OPTIONAL
IN CONST CHAR16 *VariableName, OPTIONAL
IN UINTN BufferSize,
OUT UINT8 *Buffer
)
{
EFI_STRING ResultsData;
UINTN Size;
EFI_STRING ConfigResp;
EFI_STATUS Status;
CHAR16 *Progress;
//
// Retrieve the results data from the Browser Callback
//
ResultsData = InternalHiiBrowserCallback (VariableGuid, VariableName, NULL);
if (ResultsData == NULL) {
return FALSE;
}
//
// Construct <ConfigResp> mConfigHdrTemplate L'&' ResultsData L'\0'
//
Size = (StrLen (mConfigHdrTemplate) + 1) * sizeof (CHAR16);
Size = Size + (StrLen (ResultsData) + 1) * sizeof (CHAR16);
ConfigResp = AllocateZeroPool (Size);
UnicodeSPrint (ConfigResp, Size, L"%s&%s", mConfigHdrTemplate, ResultsData);
//
// Free the allocated buffer
//
FreePool (ResultsData);
if (ConfigResp == NULL) {
return FALSE;
}
//
// Convert <ConfigResp> to a buffer
//
Status = gHiiConfigRouting->ConfigToBlock (
gHiiConfigRouting,
ConfigResp,
Buffer,
&BufferSize,
&Progress
);
//
// Free the allocated buffer
//
FreePool (ConfigResp);
if (EFI_ERROR (Status)) {
return FALSE;
}
return TRUE;
}
/**
Updates uncommitted data in the Form Browser.
If Buffer is NULL, then ASSERT().
@param[in] VariableGuid Pointer to an EFI_GUID structure. This is an optional
parameter that may be NULL.
@param[in] VariableName Pointer to a Null-terminated Unicode string. This
is an optional parameter that may be NULL.
@param[in] BufferSize Length, in bytes, of Buffer.
@param[in] Buffer Buffer of data to commit.
@param[in] RequestElement An optional field to specify which part of the
buffer data will be send back to Browser. If NULL,
the whole buffer of data will be committed to
Browser.
<RequestElement> ::= &OFFSET=<Number>&WIDTH=<Number>*
@retval FALSE The uncommitted data could not be updated.
@retval TRUE The uncommitted data was updated.
**/
BOOLEAN
EFIAPI
HiiSetBrowserData (
IN CONST EFI_GUID *VariableGuid, OPTIONAL
IN CONST CHAR16 *VariableName, OPTIONAL
IN UINTN BufferSize,
IN CONST UINT8 *Buffer,
IN CONST CHAR16 *RequestElement OPTIONAL
)
{
UINTN Size;
EFI_STRING ConfigRequest;
EFI_STRING ConfigResp;
EFI_STRING ResultsData;
ASSERT (Buffer != NULL);
//
// Construct <ConfigRequest>
//
if (RequestElement == NULL) {
//
// Allocate and fill a buffer large enough to hold the <ConfigHdr> template
// followed by "&OFFSET=0&WIDTH=WWWWWWWWWWWWWWWW" followed by a Null-terminator
//
Size = (StrLen (mConfigHdrTemplate) + 32 + 1) * sizeof (CHAR16);
ConfigRequest = AllocateZeroPool (Size);
UnicodeSPrint (ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", mConfigHdrTemplate, (UINT64)BufferSize);
} else {
//
// Allocate and fill a buffer large enough to hold the <ConfigHdr> template
// followed by <RequestElement> followed by a Null-terminator
//
Size = StrLen (mConfigHdrTemplate) * sizeof (CHAR16);
Size = Size + (StrLen (RequestElement) + 1) * sizeof (CHAR16);
ConfigRequest = AllocateZeroPool (Size);
UnicodeSPrint (ConfigRequest, Size, L"%s%s", mConfigHdrTemplate, RequestElement);
}
if (ConfigRequest == NULL) {
return FALSE;
}
//
// Convert <ConfigRequest> to <ConfigResp>
//
ConfigResp = InternalHiiBlockToConfig (ConfigRequest, Buffer, BufferSize);
FreePool (ConfigRequest);
if (ConfigResp == NULL) {
return FALSE;
}
//
// Set data in the uncommitted browser state information
//
ResultsData = InternalHiiBrowserCallback (VariableGuid, VariableName, ConfigResp + StrLen(mConfigHdrTemplate) + 1);
FreePool (ConfigResp);
return (BOOLEAN)(ResultsData != NULL);
}
/////////////////////////////////////////
/////////////////////////////////////////
/// IFR Functions
/////////////////////////////////////////
/////////////////////////////////////////
#define HII_LIB_OPCODE_ALLOCATION_SIZE 0x200
typedef struct {
UINT8 *Buffer;
UINTN BufferSize;
UINTN Position;
} HII_LIB_OPCODE_BUFFER;
///
/// Lookup table that converts EFI_IFR_TYPE_X enum values to a width in bytes
///
GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT8 mHiiDefaultTypeToWidth[] = {
1, // EFI_IFR_TYPE_NUM_SIZE_8
2, // EFI_IFR_TYPE_NUM_SIZE_16
4, // EFI_IFR_TYPE_NUM_SIZE_32
8, // EFI_IFR_TYPE_NUM_SIZE_64
1, // EFI_IFR_TYPE_BOOLEAN
3, // EFI_IFR_TYPE_TIME
4, // EFI_IFR_TYPE_DATE
2 // EFI_IFR_TYPE_STRING
};
/**
Allocates and returns a new OpCode Handle. OpCode Handles must be freed with
HiiFreeOpCodeHandle().
@retval NULL There are not enough resources to allocate a new OpCode Handle.
@retval Other A new OpCode handle.
**/
VOID *
EFIAPI
HiiAllocateOpCodeHandle (
VOID
)
{
HII_LIB_OPCODE_BUFFER *OpCodeBuffer;
OpCodeBuffer = (HII_LIB_OPCODE_BUFFER *)AllocatePool (sizeof (HII_LIB_OPCODE_BUFFER));
if (OpCodeBuffer == NULL) {
return NULL;
}
OpCodeBuffer->Buffer = (UINT8 *)AllocatePool (HII_LIB_OPCODE_ALLOCATION_SIZE);
if (OpCodeBuffer->Buffer == NULL) {
FreePool (OpCodeBuffer);
return NULL;
}
OpCodeBuffer->BufferSize = HII_LIB_OPCODE_ALLOCATION_SIZE;
OpCodeBuffer->Position = 0;
return (VOID *)OpCodeBuffer;
}
/**
Frees an OpCode Handle that was previously allocated with HiiAllocateOpCodeHandle().
When an OpCode Handle is freed, all of the opcodes associated with the OpCode
Handle are also freed.
If OpCodeHandle is NULL, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
**/
VOID
EFIAPI
HiiFreeOpCodeHandle (
VOID *OpCodeHandle
)
{
HII_LIB_OPCODE_BUFFER *OpCodeBuffer;
ASSERT (OpCodeHandle != NULL);
OpCodeBuffer = (HII_LIB_OPCODE_BUFFER *)OpCodeHandle;
if (OpCodeBuffer->Buffer != NULL) {
FreePool (OpCodeBuffer->Buffer);
}
FreePool (OpCodeBuffer);
}
/**
Internal function gets the current position of opcode buffer.
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@return Current position of opcode buffer.
**/
UINTN
EFIAPI
InternalHiiOpCodeHandlePosition (
IN VOID *OpCodeHandle
)
{
return ((HII_LIB_OPCODE_BUFFER *)OpCodeHandle)->Position;
}
/**
Internal function gets the start pointer of opcode buffer.
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@return Pointer to the opcode buffer base.
**/
UINT8 *
EFIAPI
InternalHiiOpCodeHandleBuffer (
IN VOID *OpCodeHandle
)
{
return ((HII_LIB_OPCODE_BUFFER *)OpCodeHandle)->Buffer;
}
/**
Internal function reserves the enough buffer for current opcode.
When the buffer is not enough, Opcode buffer will be extended.
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] Size Size of current opcode.
@return Pointer to the current opcode.
**/
UINT8 *
EFIAPI
InternalHiiGrowOpCodeHandle (
IN VOID *OpCodeHandle,
IN UINTN Size
)
{
HII_LIB_OPCODE_BUFFER *OpCodeBuffer;
UINT8 *Buffer;
ASSERT (OpCodeHandle != NULL);
OpCodeBuffer = (HII_LIB_OPCODE_BUFFER *)OpCodeHandle;
if (OpCodeBuffer->Position + Size > OpCodeBuffer->BufferSize) {
Buffer = ReallocatePool (
OpCodeBuffer->BufferSize,
OpCodeBuffer->BufferSize + (Size + HII_LIB_OPCODE_ALLOCATION_SIZE),
OpCodeBuffer->Buffer
);
if (Buffer == NULL) {
return NULL;
}
OpCodeBuffer->Buffer = Buffer;
OpCodeBuffer->BufferSize += (Size + HII_LIB_OPCODE_ALLOCATION_SIZE);
}
Buffer = OpCodeBuffer->Buffer + OpCodeBuffer->Position;
OpCodeBuffer->Position += Size;
return Buffer;
}
/**
Internal function creates opcode based on the template opcode.
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] OpCodeTemplate Pointer to the template buffer of opcode.
@param[in] OpCode OpCode IFR value.
@param[in] OpCodeSize Size of opcode.
@param[in] ExtensionSize Size of extended opcode.
@param[in] Scope Scope bit of opcode.
@return Pointer to the current opcode with opcode data.
**/
UINT8 *
EFIAPI
InternalHiiCreateOpCodeExtended (
IN VOID *OpCodeHandle,
IN VOID *OpCodeTemplate,
IN UINT8 OpCode,
IN UINTN OpCodeSize,
IN UINTN ExtensionSize,
IN UINT8 Scope
)
{
EFI_IFR_OP_HEADER *Header;
UINT8 *Buffer;
ASSERT (OpCodeTemplate != NULL);
ASSERT ((OpCodeSize + ExtensionSize) <= 0x7F);
Header = (EFI_IFR_OP_HEADER *)OpCodeTemplate;
Header->OpCode = OpCode;
Header->Scope = Scope;
Header->Length = (UINT8)(OpCodeSize + ExtensionSize);
Buffer = InternalHiiGrowOpCodeHandle (OpCodeHandle, Header->Length);
return (UINT8 *)CopyMem (Buffer, Header, OpCodeSize);
}
/**
Internal function creates opcode based on the template opcode for the normal opcode.
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] OpCodeTemplate Pointer to the template buffer of opcode.
@param[in] OpCode OpCode IFR value.
@param[in] OpCodeSize Size of opcode.
@return Pointer to the current opcode with opcode data.
**/
UINT8 *
EFIAPI
InternalHiiCreateOpCode (
IN VOID *OpCodeHandle,
IN VOID *OpCodeTemplate,
IN UINT8 OpCode,
IN UINTN OpCodeSize
)
{
return InternalHiiCreateOpCodeExtended (OpCodeHandle, OpCodeTemplate, OpCode, OpCodeSize, 0, 0);
}
/**
Append raw opcodes to an OpCodeHandle.
If OpCodeHandle is NULL, then ASSERT().
If RawBuffer is NULL, then ASSERT();
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] RawBuffer Buffer of opcodes to append.
@param[in] RawBufferSize The size, in bytes, of Buffer.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the appended opcodes.
**/
UINT8 *
EFIAPI
HiiCreateRawOpCodes (
IN VOID *OpCodeHandle,
IN UINT8 *RawBuffer,
IN UINTN RawBufferSize
)
{
UINT8 *Buffer;
ASSERT (RawBuffer != NULL);
Buffer = InternalHiiGrowOpCodeHandle (OpCodeHandle, RawBufferSize);
return (UINT8 *)CopyMem (Buffer, RawBuffer, RawBufferSize);
}
/**
Append opcodes from one OpCode Handle to another OpCode handle.
If OpCodeHandle is NULL, then ASSERT().
If RawOpCodeHandle is NULL, then ASSERT();
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] RawOpCodeHandle Handle to the buffer of opcodes.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the appended opcodes.
**/
UINT8 *
EFIAPI
InternalHiiAppendOpCodes (
IN VOID *OpCodeHandle,
IN VOID *RawOpCodeHandle
)
{
HII_LIB_OPCODE_BUFFER *RawOpCodeBuffer;
ASSERT (RawOpCodeHandle != NULL);
RawOpCodeBuffer = (HII_LIB_OPCODE_BUFFER *)RawOpCodeHandle;
return HiiCreateRawOpCodes (OpCodeHandle, RawOpCodeBuffer->Buffer, RawOpCodeBuffer->Position);
}
/**
Create EFI_IFR_END_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateEndOpCode (
IN VOID *OpCodeHandle
)
{
EFI_IFR_END OpCode;
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_END_OP, sizeof (OpCode));
}
/**
Create EFI_IFR_ONE_OF_OPTION_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If Type is invalid, then ASSERT().
If Flags is invalid, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] StringId StringId for the option
@param[in] Flags Flags for the option
@param[in] Type Type for the option
@param[in] Value Value for the option
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateOneOfOptionOpCode (
IN VOID *OpCodeHandle,
IN UINT16 StringId,
IN UINT8 Flags,
IN UINT8 Type,
IN UINT64 Value
)
{
EFI_IFR_ONE_OF_OPTION OpCode;
ASSERT (Type < EFI_IFR_TYPE_OTHER);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Option = StringId;
OpCode.Flags = (UINT8) (Flags & (EFI_IFR_OPTION_DEFAULT | EFI_IFR_OPTION_DEFAULT_MFG));
OpCode.Type = Type;
CopyMem (&OpCode.Value, &Value, mHiiDefaultTypeToWidth[Type]);
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_ONE_OF_OPTION_OP, sizeof (OpCode));
}
/**
Create EFI_IFR_DEFAULT_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If Type is invalid, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] DefaultId DefaultId for the default
@param[in] Type Type for the default
@param[in] Value Value for the default
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateDefaultOpCode (
IN VOID *OpCodeHandle,
IN UINT16 DefaultId,
IN UINT8 Type,
IN UINT64 Value
)
{
EFI_IFR_DEFAULT OpCode;
ASSERT (Type < EFI_IFR_TYPE_OTHER);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Type = Type;
OpCode.DefaultId = DefaultId;
CopyMem (&OpCode.Value, &Value, mHiiDefaultTypeToWidth[Type]);
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_DEFAULT_OP, sizeof (OpCode));
}
/**
Create EFI_IFR_GUID opcode.
If OpCodeHandle is NULL, then ASSERT().
If Guid is NULL, then ASSERT().
If OpCodeSize < sizeof (EFI_IFR_GUID), then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] Guid Pointer to EFI_GUID of this guided opcode.
@param[in] GuidOpCode Pointer to an EFI_IFR_GUID opcode. This is an
optional parameter that may be NULL. If this
parameter is NULL, then the GUID extension
region of the created opcode is filled with zeros.
If this parameter is not NULL, then the GUID
extension region of GuidData will be copied to
the GUID extension region of the created opcode.
@param[in] OpCodeSize The size, in bytes, of created opcode. This value
must be >= sizeof(EFI_IFR_GUID).
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateGuidOpCode (
IN VOID *OpCodeHandle,
IN CONST EFI_GUID *Guid,
IN CONST VOID *GuidOpCode, OPTIONAL
IN UINTN OpCodeSize
)
{
EFI_IFR_GUID OpCode;
EFI_IFR_GUID *OpCodePointer;
ASSERT (Guid != NULL);
ASSERT (OpCodeSize >= sizeof (OpCode));
ZeroMem (&OpCode, sizeof (OpCode));
CopyGuid ((EFI_GUID *)(VOID *)&OpCode.Guid, Guid);
OpCodePointer = (EFI_IFR_GUID *)InternalHiiCreateOpCodeExtended (
OpCodeHandle,
&OpCode,
EFI_IFR_GUID_OP,
sizeof (OpCode),
OpCodeSize - sizeof (OpCode),
0
);
if (OpCodePointer != NULL && GuidOpCode != NULL) {
CopyMem (OpCodePointer + 1, (EFI_IFR_GUID *)GuidOpCode + 1, OpCodeSize - sizeof (OpCode));
}
return (UINT8 *)OpCodePointer;
}
/**
Create EFI_IFR_ACTION_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in QuestionFlags, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] QuestionId Question ID
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] QuestionFlags Flags in Question Header
@param[in] QuestionConfig String ID for configuration
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateActionOpCode (
IN VOID *OpCodeHandle,
IN EFI_QUESTION_ID QuestionId,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 QuestionFlags,
IN EFI_STRING_ID QuestionConfig
)
{
EFI_IFR_ACTION OpCode;
ASSERT ((QuestionFlags & (~(EFI_IFR_FLAG_READ_ONLY | EFI_IFR_FLAG_CALLBACK | EFI_IFR_FLAG_RESET_REQUIRED | EFI_IFR_FLAG_OPTIONS_ONLY))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Question.QuestionId = QuestionId;
OpCode.Question.Header.Prompt = Prompt;
OpCode.Question.Header.Help = Help;
OpCode.Question.Flags = QuestionFlags;
OpCode.QuestionConfig = QuestionConfig;
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_ACTION_OP, sizeof (OpCode));
}
/**
Create EFI_IFR_SUBTITLE_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in Flags, then ASSERT().
If Scope > 1, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] Flags Subtitle opcode flags
@param[in] Scope 1 if this opcpde is the beginning of a new scope.
0 if this opcode is within the current scope.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateSubTitleOpCode (
IN VOID *OpCodeHandle,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 Flags,
IN UINT8 Scope
)
{
EFI_IFR_SUBTITLE OpCode;
ASSERT (Scope <= 1);
ASSERT ((Flags & (~(EFI_IFR_FLAGS_HORIZONTAL))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Statement.Prompt = Prompt;
OpCode.Statement.Help = Help;
OpCode.Flags = Flags;
return InternalHiiCreateOpCodeExtended (
OpCodeHandle,
&OpCode,
EFI_IFR_SUBTITLE_OP,
sizeof (OpCode),
0,
Scope
);
}
/**
Create EFI_IFR_REF_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in QuestionFlags, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] FormId Destination Form ID
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] QuestionFlags Flags in Question Header
@param[in] QuestionId Question ID
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateGotoOpCode (
IN VOID *OpCodeHandle,
IN EFI_FORM_ID FormId,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 QuestionFlags,
IN EFI_QUESTION_ID QuestionId
)
{
EFI_IFR_REF OpCode;
ASSERT ((QuestionFlags & (~(EFI_IFR_FLAG_READ_ONLY | EFI_IFR_FLAG_CALLBACK | EFI_IFR_FLAG_RESET_REQUIRED | EFI_IFR_FLAG_OPTIONS_ONLY))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Question.Header.Prompt = Prompt;
OpCode.Question.Header.Help = Help;
OpCode.Question.QuestionId = QuestionId;
OpCode.Question.Flags = QuestionFlags;
OpCode.FormId = FormId;
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_REF_OP, sizeof (OpCode));
}
/**
Create EFI_IFR_CHECKBOX_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in QuestionFlags, then ASSERT().
If any reserved bits are set in CheckBoxFlags, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] QuestionId Question ID
@param[in] VarStoreId Storage ID
@param[in] VarOffset Offset in Storage
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] QuestionFlags Flags in Question Header
@param[in] CheckBoxFlags Flags for checkbox opcode
@param[in] DefaultsOpCodeHandle Handle for a buffer of DEFAULT opcodes. This
is an optional parameter that may be NULL.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateCheckBoxOpCode (
IN VOID *OpCodeHandle,
IN EFI_QUESTION_ID QuestionId,
IN EFI_VARSTORE_ID VarStoreId,
IN UINT16 VarOffset,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 QuestionFlags,
IN UINT8 CheckBoxFlags,
IN VOID *DefaultsOpCodeHandle OPTIONAL
)
{
EFI_IFR_CHECKBOX OpCode;
UINTN Position;
ASSERT ((QuestionFlags & (~(EFI_IFR_FLAG_READ_ONLY | EFI_IFR_FLAG_CALLBACK | EFI_IFR_FLAG_RESET_REQUIRED | EFI_IFR_FLAG_OPTIONS_ONLY))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Question.QuestionId = QuestionId;
OpCode.Question.VarStoreId = VarStoreId;
OpCode.Question.VarStoreInfo.VarOffset = VarOffset;
OpCode.Question.Header.Prompt = Prompt;
OpCode.Question.Header.Help = Help;
OpCode.Question.Flags = QuestionFlags;
OpCode.Flags = CheckBoxFlags;
if (DefaultsOpCodeHandle == NULL) {
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_CHECKBOX_OP, sizeof (OpCode));
}
Position = InternalHiiOpCodeHandlePosition (OpCodeHandle);
InternalHiiCreateOpCodeExtended (OpCodeHandle, &OpCode, EFI_IFR_CHECKBOX_OP, sizeof (OpCode), 0, 1);
InternalHiiAppendOpCodes (OpCodeHandle, DefaultsOpCodeHandle);
HiiCreateEndOpCode (OpCodeHandle);
return InternalHiiOpCodeHandleBuffer (OpCodeHandle) + Position;
}
/**
Create EFI_IFR_NUMERIC_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in QuestionFlags, then ASSERT().
If any reserved bits are set in NumericFlags, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] QuestionId Question ID
@param[in] VarStoreId Storage ID
@param[in] VarOffset Offset in Storage
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] QuestionFlags Flags in Question Header
@param[in] NumericFlags Flags for numeric opcode
@param[in] Minimum Numeric minimum value
@param[in] Maximum Numeric maximum value
@param[in] Step Numeric step for edit
@param[in] DefaultsOpCodeHandle Handle for a buffer of DEFAULT opcodes. This
is an optional parameter that may be NULL.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateNumericOpCode (
IN VOID *OpCodeHandle,
IN EFI_QUESTION_ID QuestionId,
IN EFI_VARSTORE_ID VarStoreId,
IN UINT16 VarOffset,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 QuestionFlags,
IN UINT8 NumericFlags,
IN UINT64 Minimum,
IN UINT64 Maximum,
IN UINT64 Step,
IN VOID *DefaultsOpCodeHandle OPTIONAL
)
{
EFI_IFR_NUMERIC OpCode;
UINTN Position;
ASSERT ((QuestionFlags & (~(EFI_IFR_FLAG_READ_ONLY | EFI_IFR_FLAG_CALLBACK | EFI_IFR_FLAG_RESET_REQUIRED | EFI_IFR_FLAG_OPTIONS_ONLY))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Question.QuestionId = QuestionId;
OpCode.Question.VarStoreId = VarStoreId;
OpCode.Question.VarStoreInfo.VarOffset = VarOffset;
OpCode.Question.Header.Prompt = Prompt;
OpCode.Question.Header.Help = Help;
OpCode.Question.Flags = QuestionFlags;
OpCode.Flags = NumericFlags;
switch (NumericFlags & EFI_IFR_NUMERIC_SIZE) {
case EFI_IFR_NUMERIC_SIZE_1:
OpCode.data.u8.MinValue = (UINT8)Minimum;
OpCode.data.u8.MaxValue = (UINT8)Maximum;
OpCode.data.u8.Step = (UINT8)Step;
break;
case EFI_IFR_NUMERIC_SIZE_2:
OpCode.data.u16.MinValue = (UINT16)Minimum;
OpCode.data.u16.MaxValue = (UINT16)Maximum;
OpCode.data.u16.Step = (UINT16)Step;
break;
case EFI_IFR_NUMERIC_SIZE_4:
OpCode.data.u32.MinValue = (UINT32)Minimum;
OpCode.data.u32.MaxValue = (UINT32)Maximum;
OpCode.data.u32.Step = (UINT32)Step;
break;
case EFI_IFR_NUMERIC_SIZE_8:
OpCode.data.u64.MinValue = Minimum;
OpCode.data.u64.MaxValue = Maximum;
OpCode.data.u64.Step = Step;
break;
}
if (DefaultsOpCodeHandle == NULL) {
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_NUMERIC_OP, sizeof (OpCode));
}
Position = InternalHiiOpCodeHandlePosition (OpCodeHandle);
InternalHiiCreateOpCodeExtended (OpCodeHandle, &OpCode, EFI_IFR_NUMERIC_OP, sizeof (OpCode), 0, 1);
InternalHiiAppendOpCodes (OpCodeHandle, DefaultsOpCodeHandle);
HiiCreateEndOpCode (OpCodeHandle);
return InternalHiiOpCodeHandleBuffer (OpCodeHandle) + Position;
}
/**
Create EFI_IFR_STRING_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in QuestionFlags, then ASSERT().
If any reserved bits are set in StringFlags, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] QuestionId Question ID
@param[in] VarStoreId Storage ID
@param[in] VarOffset Offset in Storage
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] QuestionFlags Flags in Question Header
@param[in] StringFlags Flags for string opcode
@param[in] MinSize String minimum length
@param[in] MaxSize String maximum length
@param[in] DefaultsOpCodeHandle Handle for a buffer of DEFAULT opcodes. This
is an optional parameter that may be NULL.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateStringOpCode (
IN VOID *OpCodeHandle,
IN EFI_QUESTION_ID QuestionId,
IN EFI_VARSTORE_ID VarStoreId,
IN UINT16 VarOffset,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 QuestionFlags,
IN UINT8 StringFlags,
IN UINT8 MinSize,
IN UINT8 MaxSize,
IN VOID *DefaultsOpCodeHandle OPTIONAL
)
{
EFI_IFR_STRING OpCode;
UINTN Position;
ASSERT ((QuestionFlags & (~(EFI_IFR_FLAG_READ_ONLY | EFI_IFR_FLAG_CALLBACK | EFI_IFR_FLAG_RESET_REQUIRED | EFI_IFR_FLAG_OPTIONS_ONLY))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Question.Header.Prompt = Prompt;
OpCode.Question.Header.Help = Help;
OpCode.Question.QuestionId = QuestionId;
OpCode.Question.VarStoreId = VarStoreId;
OpCode.Question.VarStoreInfo.VarOffset = VarOffset;
OpCode.Question.Flags = QuestionFlags;
OpCode.MinSize = MinSize;
OpCode.MaxSize = MaxSize;
OpCode.Flags = (UINT8) (StringFlags & EFI_IFR_STRING_MULTI_LINE);
if (DefaultsOpCodeHandle == NULL) {
return InternalHiiCreateOpCode (OpCodeHandle, &OpCode, EFI_IFR_STRING_OP, sizeof (OpCode));
}
Position = InternalHiiOpCodeHandlePosition (OpCodeHandle);
InternalHiiCreateOpCodeExtended (OpCodeHandle, &OpCode, EFI_IFR_STRING_OP, sizeof (OpCode), 0, 1);
InternalHiiAppendOpCodes (OpCodeHandle, DefaultsOpCodeHandle);
HiiCreateEndOpCode (OpCodeHandle);
return InternalHiiOpCodeHandleBuffer (OpCodeHandle) + Position;
}
/**
Create EFI_IFR_ONE_OF_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in QuestionFlags, then ASSERT().
If any reserved bits are set in OneOfFlags, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] QuestionId Question ID
@param[in] VarStoreId Storage ID
@param[in] VarOffset Offset in Storage
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] QuestionFlags Flags in Question Header
@param[in] OneOfFlags Flags for oneof opcode
@param[in] OptionsOpCodeHandle Handle for a buffer of ONE_OF_OPTION opcodes.
@param[in] DefaultsOpCodeHandle Handle for a buffer of DEFAULT opcodes. This
is an optional parameter that may be NULL.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateOneOfOpCode (
IN VOID *OpCodeHandle,
IN EFI_QUESTION_ID QuestionId,
IN EFI_VARSTORE_ID VarStoreId,
IN UINT16 VarOffset,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 QuestionFlags,
IN UINT8 OneOfFlags,
IN VOID *OptionsOpCodeHandle,
IN VOID *DefaultsOpCodeHandle OPTIONAL
)
{
EFI_IFR_ONE_OF OpCode;
UINTN Position;
ASSERT (OptionsOpCodeHandle != NULL);
ASSERT ((QuestionFlags & (~(EFI_IFR_FLAG_READ_ONLY | EFI_IFR_FLAG_CALLBACK | EFI_IFR_FLAG_RESET_REQUIRED | EFI_IFR_FLAG_OPTIONS_ONLY))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Question.Header.Prompt = Prompt;
OpCode.Question.Header.Help = Help;
OpCode.Question.QuestionId = QuestionId;
OpCode.Question.VarStoreId = VarStoreId;
OpCode.Question.VarStoreInfo.VarOffset = VarOffset;
OpCode.Question.Flags = QuestionFlags;
OpCode.Flags = OneOfFlags;
Position = InternalHiiOpCodeHandlePosition (OpCodeHandle);
InternalHiiCreateOpCodeExtended (OpCodeHandle, &OpCode, EFI_IFR_ONE_OF_OP, sizeof (OpCode), 0, 1);
InternalHiiAppendOpCodes (OpCodeHandle, OptionsOpCodeHandle);
if (DefaultsOpCodeHandle != NULL) {
InternalHiiAppendOpCodes (OpCodeHandle, DefaultsOpCodeHandle);
}
HiiCreateEndOpCode (OpCodeHandle);
return InternalHiiOpCodeHandleBuffer (OpCodeHandle) + Position;
}
/**
Create EFI_IFR_ORDERED_LIST_OP opcode.
If OpCodeHandle is NULL, then ASSERT().
If any reserved bits are set in QuestionFlags, then ASSERT().
If any reserved bits are set in OrderedListFlags, then ASSERT().
@param[in] OpCodeHandle Handle to the buffer of opcodes.
@param[in] QuestionId Question ID
@param[in] VarStoreId Storage ID
@param[in] VarOffset Offset in Storage
@param[in] Prompt String ID for Prompt
@param[in] Help String ID for Help
@param[in] QuestionFlags Flags in Question Header
@param[in] OrderedListFlags Flags for ordered list opcode
@param[in] DataType Type for option value
@param[in] MaxContainers Maximum count for options in this ordered list
@param[in] OptionsOpCodeHandle Handle for a buffer of ONE_OF_OPTION opcodes.
@param[in] DefaultsOpCodeHandle Handle for a buffer of DEFAULT opcodes. This
is an optional parameter that may be NULL.
@retval NULL There is not enough space left in Buffer to add the opcode.
@retval Other A pointer to the created opcode.
**/
UINT8 *
EFIAPI
HiiCreateOrderedListOpCode (
IN VOID *OpCodeHandle,
IN EFI_QUESTION_ID QuestionId,
IN EFI_VARSTORE_ID VarStoreId,
IN UINT16 VarOffset,
IN EFI_STRING_ID Prompt,
IN EFI_STRING_ID Help,
IN UINT8 QuestionFlags,
IN UINT8 OrderedListFlags,
IN UINT8 DataType,
IN UINT8 MaxContainers,
IN VOID *OptionsOpCodeHandle,
IN VOID *DefaultsOpCodeHandle OPTIONAL
)
{
EFI_IFR_ORDERED_LIST OpCode;
UINTN Position;
ASSERT (OptionsOpCodeHandle != NULL);
ASSERT ((QuestionFlags & (~(EFI_IFR_FLAG_READ_ONLY | EFI_IFR_FLAG_CALLBACK | EFI_IFR_FLAG_RESET_REQUIRED | EFI_IFR_FLAG_OPTIONS_ONLY))) == 0);
ZeroMem (&OpCode, sizeof (OpCode));
OpCode.Question.Header.Prompt = Prompt;
OpCode.Question.Header.Help = Help;
OpCode.Question.QuestionId = QuestionId;
OpCode.Question.VarStoreId = VarStoreId;
OpCode.Question.VarStoreInfo.VarOffset = VarOffset;
OpCode.Question.Flags = QuestionFlags;
OpCode.MaxContainers = MaxContainers;
OpCode.Flags = OrderedListFlags;
Position = InternalHiiOpCodeHandlePosition (OpCodeHandle);
InternalHiiCreateOpCodeExtended (OpCodeHandle, &OpCode, EFI_IFR_ORDERED_LIST_OP, sizeof (OpCode), 0, 1);
InternalHiiAppendOpCodes (OpCodeHandle, OptionsOpCodeHandle);
if (DefaultsOpCodeHandle != NULL) {
InternalHiiAppendOpCodes (OpCodeHandle, DefaultsOpCodeHandle);
}
HiiCreateEndOpCode (OpCodeHandle);
return InternalHiiOpCodeHandleBuffer (OpCodeHandle) + Position;
}
/**
This is the internal worker function to update the data in
a form specified by FormSetGuid, FormId and Label.
@param[in] FormSetGuid The optional Formset GUID.
@param[in] FormId The Form ID.
@param[in] Package The package header.
@param[in] OpCodeBufferStart An OpCode buffer that contains the set of IFR
opcodes to be inserted or replaced in the form.
@param[in] OpCodeBufferEnd An OpCcode buffer that contains the IFR opcode
that marks the end of a replace operation in the form.
@param[out] TempPackage The resultant package.
@retval EFI_SUCCESS The function completes successfully.
@retval EFI_NOT_FOUND The updated opcode or endopcode is not found.
**/
EFI_STATUS
EFIAPI
InternalHiiUpdateFormPackageData (
IN EFI_GUID *FormSetGuid, OPTIONAL
IN EFI_FORM_ID FormId,
IN EFI_HII_PACKAGE_HEADER *Package,
IN HII_LIB_OPCODE_BUFFER *OpCodeBufferStart,
IN HII_LIB_OPCODE_BUFFER *OpCodeBufferEnd, OPTIONAL
OUT EFI_HII_PACKAGE_HEADER *TempPackage
)
{
UINTN AddSize;
UINT8 *BufferPos;
EFI_HII_PACKAGE_HEADER PackageHeader;
UINTN Offset;
EFI_IFR_OP_HEADER *IfrOpHdr;
EFI_IFR_OP_HEADER *UpdateIfrOpHdr;
BOOLEAN GetFormSet;
BOOLEAN GetForm;
BOOLEAN Updated;
UINTN UpdatePackageLength;
CopyMem (TempPackage, Package, sizeof (EFI_HII_PACKAGE_HEADER));
UpdatePackageLength = sizeof (EFI_HII_PACKAGE_HEADER);
BufferPos = (UINT8 *) (TempPackage + 1);
CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));
IfrOpHdr = (EFI_IFR_OP_HEADER *)((UINT8 *) Package + sizeof (EFI_HII_PACKAGE_HEADER));
Offset = sizeof (EFI_HII_PACKAGE_HEADER);
GetFormSet = (BOOLEAN) ((FormSetGuid == NULL) ? TRUE : FALSE);
GetForm = FALSE;
Updated = FALSE;
while (Offset < PackageHeader.Length) {
CopyMem (BufferPos, IfrOpHdr, IfrOpHdr->Length);
BufferPos += IfrOpHdr->Length;
UpdatePackageLength += IfrOpHdr->Length;
//
// Find the matched FormSet and Form
//
if ((IfrOpHdr->OpCode == EFI_IFR_FORM_SET_OP) && (FormSetGuid != NULL)) {
if (CompareGuid((GUID *)(VOID *)&((EFI_IFR_FORM_SET *) IfrOpHdr)->Guid, FormSetGuid)) {
GetFormSet = TRUE;
} else {
GetFormSet = FALSE;
}
} else if (IfrOpHdr->OpCode == EFI_IFR_FORM_OP || IfrOpHdr->OpCode == EFI_IFR_FORM_MAP_OP) {
if (CompareMem (&((EFI_IFR_FORM *) IfrOpHdr)->FormId, &FormId, sizeof (EFI_FORM_ID)) == 0) {
GetForm = TRUE;
} else {
GetForm = FALSE;
}
}
//
// The matched Form is found, and Update data in this form
//
if (GetFormSet && GetForm) {
UpdateIfrOpHdr = (EFI_IFR_OP_HEADER *) OpCodeBufferStart->Buffer;
if ((UpdateIfrOpHdr->Length == IfrOpHdr->Length) && \
(CompareMem (IfrOpHdr, UpdateIfrOpHdr, UpdateIfrOpHdr->Length) == 0)) {
//
// Remove the original data when End OpCode buffer exist.
//
if (OpCodeBufferEnd != NULL) {
Offset += IfrOpHdr->Length;
IfrOpHdr = (EFI_IFR_OP_HEADER *) ((UINT8 *) (IfrOpHdr) + IfrOpHdr->Length);
UpdateIfrOpHdr = (EFI_IFR_OP_HEADER *) OpCodeBufferEnd->Buffer;
while (Offset < PackageHeader.Length) {
//
// Search the matched end opcode
//
if ((UpdateIfrOpHdr->Length == IfrOpHdr->Length) && \
(CompareMem (IfrOpHdr, UpdateIfrOpHdr, UpdateIfrOpHdr->Length) == 0)) {
break;
}
//
// Go to the next Op-Code
//
Offset += IfrOpHdr->Length;
IfrOpHdr = (EFI_IFR_OP_HEADER *) ((UINT8 *) (IfrOpHdr) + IfrOpHdr->Length);
}
if (Offset >= PackageHeader.Length) {
//
// The end opcode is not found.
//
return EFI_NOT_FOUND;
}
}
//
// Insert the updated data
//
AddSize = ((EFI_IFR_OP_HEADER *) OpCodeBufferStart->Buffer)->Length;
CopyMem (BufferPos, OpCodeBufferStart->Buffer + AddSize, OpCodeBufferStart->Position - AddSize);
BufferPos += OpCodeBufferStart->Position - AddSize;
UpdatePackageLength += OpCodeBufferStart->Position - AddSize;
if (OpCodeBufferEnd != NULL) {
//
// Add the end opcode
//
CopyMem (BufferPos, IfrOpHdr, IfrOpHdr->Length);
BufferPos += IfrOpHdr->Length;
UpdatePackageLength += IfrOpHdr->Length;
}
//
// Copy the left package data.
//
Offset += IfrOpHdr->Length;
CopyMem (BufferPos, (UINT8 *) Package + Offset, PackageHeader.Length - Offset);
UpdatePackageLength += PackageHeader.Length - Offset;
//
// Set update flag
//
Updated = TRUE;
break;
}
}
//
// Go to the next Op-Code
//
Offset += IfrOpHdr->Length;
IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);
}
if (!Updated) {
//
// The updated opcode buffer is not found.
//
return EFI_NOT_FOUND;
}
//
// Update the package length.
//
PackageHeader.Length = (UINT32) UpdatePackageLength;
CopyMem (TempPackage, &PackageHeader, sizeof (EFI_HII_PACKAGE_HEADER));
return EFI_SUCCESS;
}
/**
This function updates a form that has previously been registered with the HII
Database. This function will perform at most one update operation.
The form to update is specified by Handle, FormSetGuid, and FormId. Binary
comparisons of IFR opcodes are performed from the beginning of the form being
updated until an IFR opcode is found that exactly matches the first IFR opcode
specified by StartOpCodeHandle. The following rules are used to determine if
an insert, replace, or delete operation is performed.
1) If no matches are found, then NULL is returned.
2) If a match is found, and EndOpCodeHandle is NULL, then all of the IFR opcodes
from StartOpCodeHandle except the first opcode are inserted immediately after
the matching IFR opcode in the form to be updated.
3) If a match is found, and EndOpCodeHandle is not NULL, then a search is made
from the matching IFR opcode until an IFR opcode exactly matches the first
IFR opcode specified by EndOpCodeHandle. If no match is found for the first
IFR opcode specified by EndOpCodeHandle, then NULL is returned. If a match
is found, then all of the IFR opcodes between the start match and the end
match are deleted from the form being updated and all of the IFR opcodes
from StartOpCodeHandle except the first opcode are inserted immediately after
the matching start IFR opcode. If StartOpCcodeHandle only contains one
IFR instruction, then the result of this operation will delete all of the IFR
opcodes between the start end matches.
If HiiHandle is NULL, then ASSERT().
If StartOpCodeHandle is NULL, then ASSERT().
@param[in] HiiHandle The HII Handle of the form to update.
@param[in] FormSetGuid The Formset GUID of the form to update. This
is an optional parameter that may be NULL.
If it is NULL, all FormSet will be updated.
@param[in] FormId The ID of the form to update.
@param[in] StartOpCodeHandle An OpCode Handle that contains the set of IFR
opcodes to be inserted or replaced in the form.
The first IFR instruction in StartOpCodeHandle
is used to find matching IFR opcode in the
form.
@param[in] EndOpCodeHandle An OpCcode Handle that contains the IFR opcode
that marks the end of a replace operation in
the form. This is an optional parameter that
may be NULL. If it is NULL, then an the IFR
opcodes specified by StartOpCodeHandle are
inserted into the form.
@retval EFI_OUT_OF_RESOURCES No enough memory resource is allocated.
@retval EFI_NOT_FOUND The following cases will return EFI_NOT_FOUND.
1) The form specified by HiiHandle, FormSetGuid,
and FormId could not be found in the HII Database.
2) No IFR opcodes in the target form match the first
IFR opcode in StartOpCodeHandle.
3) EndOpCOde is not NULL, and no IFR opcodes in the
target form following a matching start opcode match
the first IFR opcode in EndOpCodeHandle.
@retval EFI_SUCCESS The matched form is updated by StartOpcode.
**/
EFI_STATUS
EFIAPI
HiiUpdateForm (
IN EFI_HII_HANDLE HiiHandle,
IN EFI_GUID *FormSetGuid, OPTIONAL
IN EFI_FORM_ID FormId,
IN VOID *StartOpCodeHandle,
IN VOID *EndOpCodeHandle OPTIONAL
)
{
EFI_STATUS Status;
EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;
UINT32 PackageListLength;
UINT32 Offset;
EFI_HII_PACKAGE_LIST_HEADER *UpdatePackageList;
UINTN BufferSize;
UINT8 *UpdateBufferPos;
EFI_HII_PACKAGE_HEADER *Package;
EFI_HII_PACKAGE_HEADER *TempPacakge;
EFI_HII_PACKAGE_HEADER PackageHeader;
BOOLEAN Updated;
HII_LIB_OPCODE_BUFFER *OpCodeBufferStart;
HII_LIB_OPCODE_BUFFER *OpCodeBufferEnd;
//
// Input update data can't be NULL.
//
ASSERT (HiiHandle != NULL);
ASSERT (StartOpCodeHandle != NULL);
UpdatePackageList = NULL;
TempPacakge = NULL;
HiiPackageList = NULL;
//
// Retrieve buffer data from Opcode Handle
//
OpCodeBufferStart = (HII_LIB_OPCODE_BUFFER *) StartOpCodeHandle;
OpCodeBufferEnd = (HII_LIB_OPCODE_BUFFER *) EndOpCodeHandle;
//
// Get the original package list
//
BufferSize = 0;
HiiPackageList = NULL;
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, HiiHandle, &BufferSize, HiiPackageList);
//
// The return status should always be EFI_BUFFER_TOO_SMALL as input buffer's size is 0.
//
if (Status != EFI_BUFFER_TOO_SMALL) {
return Status;
}
HiiPackageList = AllocatePool (BufferSize);
if (HiiPackageList == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Finish;
}
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, HiiHandle, &BufferSize, HiiPackageList);
if (EFI_ERROR (Status)) {
goto Finish;
}
//
// Calculate and allocate space for retrieval of IFR data
//
BufferSize += OpCodeBufferStart->Position;
UpdatePackageList = AllocateZeroPool (BufferSize);
if (UpdatePackageList == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Finish;
}
//
// Allocate temp buffer to store the temp updated package buffer
//
TempPacakge = AllocateZeroPool (BufferSize);
if (TempPacakge == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Finish;
}
UpdateBufferPos = (UINT8 *) UpdatePackageList;
//
// Copy the package list header
//
CopyMem (UpdateBufferPos, HiiPackageList, sizeof (EFI_HII_PACKAGE_LIST_HEADER));
UpdateBufferPos += sizeof (EFI_HII_PACKAGE_LIST_HEADER);
//
// Go through each package to find the matched package and update one by one
//
Updated = FALSE;
Offset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);
PackageListLength = ReadUnaligned32 (&HiiPackageList->PackageLength);
while (Offset < PackageListLength) {
Package = (EFI_HII_PACKAGE_HEADER *) (((UINT8 *) HiiPackageList) + Offset);
CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));
Offset += Package->Length;
if (Package->Type == EFI_HII_PACKAGE_FORMS) {
//
// Check this package is the matched package.
//
Status = InternalHiiUpdateFormPackageData (FormSetGuid, FormId, Package, OpCodeBufferStart, OpCodeBufferEnd, TempPacakge);
//
// The matched package is found. Its package buffer will be updated by the input new data.
//
if (!EFI_ERROR(Status)) {
//
// Set Update Flag
//
Updated = TRUE;
//
// Add updated package buffer
//
Package = TempPacakge;
}
}
//
// Add pacakge buffer
//
CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));
CopyMem (UpdateBufferPos, Package, PackageHeader.Length);
UpdateBufferPos += PackageHeader.Length;
}
if (Updated) {
//
// Update package list length
//
BufferSize = UpdateBufferPos - (UINT8 *) UpdatePackageList;
WriteUnaligned32 (&UpdatePackageList->PackageLength, (UINT32) BufferSize);
//
// Update Package to show form
//
Status = gHiiDatabase->UpdatePackageList (gHiiDatabase, HiiHandle, UpdatePackageList);
} else {
//
// Not matched form is found and updated.
//
Status = EFI_NOT_FOUND;
}
Finish:
if (HiiPackageList != NULL) {
FreePool (HiiPackageList);
}
if (UpdatePackageList != NULL) {
FreePool (UpdatePackageList);
}
if (TempPacakge != NULL) {
FreePool (TempPacakge);
}
return Status;
}
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