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audk/MdeModulePkg/Library/ExtendedIfrSupportLib/Form.c

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/** @file
Common Library Routines to assist handle HII elements.
Copyright (c) 2007 - 2008, 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 "LibraryInternal.h"
STATIC
EFI_STATUS
GetPackageDataFromPackageList (
IN EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList,
IN UINT32 PackageIndex,
OUT UINT32 *BufferLen,
OUT EFI_HII_PACKAGE_HEADER **Buffer
)
{
UINT32 Index;
EFI_HII_PACKAGE_HEADER *Package;
UINT32 Offset;
UINT32 PackageListLength;
EFI_HII_PACKAGE_HEADER PackageHeader = {0, 0};
ASSERT(HiiPackageList != NULL);
if ((BufferLen == NULL) || (Buffer == NULL)) {
return EFI_INVALID_PARAMETER;
}
Package = NULL;
Index = 0;
Offset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);
CopyMem (&PackageListLength, &HiiPackageList->PackageLength, sizeof (UINT32));
while (Offset < PackageListLength) {
Package = (EFI_HII_PACKAGE_HEADER *) (((UINT8 *) HiiPackageList) + Offset);
CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));
if (Index == PackageIndex) {
break;
}
Offset += PackageHeader.Length;
Index++;
}
if (Offset >= PackageListLength) {
//
// no package found in this Package List
//
return EFI_NOT_FOUND;
}
*BufferLen = PackageHeader.Length;
*Buffer = Package;
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
EFIAPI
UpdateFormPackageData (
IN EFI_GUID *FormSetGuid,
IN EFI_FORM_ID FormId,
IN EFI_HII_PACKAGE_HEADER *Package,
IN UINT32 PackageLength,
IN UINT16 Label,
IN BOOLEAN Insert,
IN EFI_HII_UPDATE_DATA *Data,
OUT UINT8 **TempBuffer,
OUT UINT32 *TempBufferSize
)
{
UINTN AddSize;
UINT8 *BufferPos;
EFI_HII_PACKAGE_HEADER PackageHeader;
UINTN Offset;
EFI_IFR_OP_HEADER *IfrOpHdr;
BOOLEAN GetFormSet;
BOOLEAN GetForm;
UINT8 ExtendOpCode;
UINT16 LabelNumber;
BOOLEAN Updated;
EFI_IFR_OP_HEADER *AddOpCode;
if ((TempBuffer == NULL) || (TempBufferSize == NULL)) {
return EFI_INVALID_PARAMETER;
}
*TempBufferSize = PackageLength;
if (Data != NULL) {
*TempBufferSize += Data->Offset;
}
*TempBuffer = AllocateZeroPool (*TempBufferSize);
if (*TempBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CopyMem (*TempBuffer, Package, sizeof (EFI_HII_PACKAGE_HEADER));
*TempBufferSize = sizeof (EFI_HII_PACKAGE_HEADER);
BufferPos = *TempBuffer + sizeof (EFI_HII_PACKAGE_HEADER);
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;
*TempBufferSize += IfrOpHdr->Length;
switch (IfrOpHdr->OpCode) {
case EFI_IFR_FORM_SET_OP :
if (FormSetGuid != NULL) {
if (CompareMem (&((EFI_IFR_FORM_SET *) IfrOpHdr)->Guid, FormSetGuid, sizeof (EFI_GUID)) == 0) {
GetFormSet = TRUE;
}
}
break;
case EFI_IFR_FORM_OP:
if (CompareMem (&((EFI_IFR_FORM *) IfrOpHdr)->FormId, &FormId, sizeof (EFI_FORM_ID)) == 0) {
GetForm = TRUE;
}
break;
case EFI_IFR_GUID_OP :
if (!GetFormSet || !GetForm || Updated) {
//
// Go to the next Op-Code
//
Offset += IfrOpHdr->Length;
IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);
continue;
}
ExtendOpCode = ((EFI_IFR_GUID_LABEL *) IfrOpHdr)->ExtendOpCode;
CopyMem (&LabelNumber, &((EFI_IFR_GUID_LABEL *)IfrOpHdr)->Number, sizeof (UINT16));
if ((ExtendOpCode != EFI_IFR_EXTEND_OP_LABEL) || (LabelNumber != Label)) {
//
// Go to the next Op-Code
//
Offset += IfrOpHdr->Length;
IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);
continue;
}
if (Insert && (Data != NULL)) {
//
// insert the DataCount amount of opcodes to TempBuffer if Data is NULL remove
// DataCount amount of opcodes unless runing into a label.
//
AddOpCode = (EFI_IFR_OP_HEADER *)Data->Data;
AddSize = 0;
while (AddSize < Data->Offset) {
CopyMem (BufferPos, AddOpCode, AddOpCode->Length);
BufferPos += AddOpCode->Length;
*TempBufferSize += AddOpCode->Length;
AddSize += AddOpCode->Length;
AddOpCode = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (AddOpCode) + AddOpCode->Length);
}
} else {
//
// Search the next Label.
//
while (TRUE) {
Offset += IfrOpHdr->Length;
//
// Search the next label and Fail if not label found.
//
if (Offset >= PackageHeader.Length) {
goto Fail;
}
IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);
if (IfrOpHdr->OpCode == EFI_IFR_GUID_OP) {
ExtendOpCode = ((EFI_IFR_GUID_LABEL *) IfrOpHdr)->ExtendOpCode;
if (ExtendOpCode == EFI_IFR_EXTEND_OP_LABEL) {
break;
}
}
}
if (Data != NULL) {
AddOpCode = (EFI_IFR_OP_HEADER *)Data->Data;
AddSize = 0;
while (AddSize < Data->Offset) {
CopyMem (BufferPos, AddOpCode, AddOpCode->Length);
BufferPos += AddOpCode->Length;
*TempBufferSize += AddOpCode->Length;
AddSize += AddOpCode->Length;
AddOpCode = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (AddOpCode) + AddOpCode->Length);
}
}
//
// copy the next label
//
CopyMem (BufferPos, IfrOpHdr, IfrOpHdr->Length);
BufferPos += IfrOpHdr->Length;
*TempBufferSize += IfrOpHdr->Length;
}
Updated = TRUE;
break;
default :
break;
}
//
// Go to the next Op-Code
//
Offset += IfrOpHdr->Length;
IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);
}
//
// Update the package length.
//
PackageHeader.Length = *TempBufferSize;
CopyMem (*TempBuffer, &PackageHeader, sizeof (EFI_HII_PACKAGE_HEADER));
Fail:
if (!Updated) {
gBS->FreePool (*TempBuffer);
*TempBufferSize = 0;
return EFI_NOT_FOUND;
}
return EFI_SUCCESS;
}
/**
This function allows the caller to update a form that has
previously been registered with the EFI HII database.
@param Handle Hii Handle
@param FormSetGuid The formset should be updated.
@param FormId The form should be updated.
@param Label Update information starting immediately after this
label in the IFR
@param Insert If TRUE and Data is not NULL, insert data after
Label. If FALSE, replace opcodes between two
labels with Data
@param Data The adding data; If NULL, remove opcodes between
two Label.
@retval EFI_SUCCESS Update success.
@retval Other Update fail.
**/
EFI_STATUS
EFIAPI
IfrLibUpdateForm (
IN EFI_HII_HANDLE Handle,
IN EFI_GUID *FormSetGuid, OPTIONAL
IN EFI_FORM_ID FormId,
IN UINT16 Label,
IN BOOLEAN Insert,
IN EFI_HII_UPDATE_DATA *Data
)
{
EFI_STATUS Status;
EFI_HII_DATABASE_PROTOCOL *HiiDatabase;
EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;
UINT32 Index;
EFI_HII_PACKAGE_LIST_HEADER *UpdateBuffer;
UINTN BufferSize;
UINT8 *UpdateBufferPos;
EFI_HII_PACKAGE_HEADER PackageHeader;
EFI_HII_PACKAGE_HEADER *Package;
UINT32 PackageLength;
EFI_HII_PACKAGE_HEADER *TempBuffer;
UINT32 TempBufferSize;
BOOLEAN Updated;
if (Data == NULL) {
return EFI_INVALID_PARAMETER;
}
HiiDatabase = gIfrLibHiiDatabase;
//
// Get the orginal package list
//
BufferSize = 0;
HiiPackageList = NULL;
Status = HiiDatabase->ExportPackageLists (HiiDatabase, Handle, &BufferSize, HiiPackageList);
if (Status == EFI_BUFFER_TOO_SMALL) {
HiiPackageList = AllocatePool (BufferSize);
ASSERT (HiiPackageList != NULL);
Status = HiiDatabase->ExportPackageLists (HiiDatabase, Handle, &BufferSize, HiiPackageList);
if (EFI_ERROR (Status)) {
gBS->FreePool (HiiPackageList);
return Status;
}
}
//
// Calculate and allocate space for retrieval of IFR data
//
BufferSize += Data->Offset;
UpdateBuffer = AllocateZeroPool (BufferSize);
if (UpdateBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
UpdateBufferPos = (UINT8 *) UpdateBuffer;
//
// copy the package list header
//
CopyMem (UpdateBufferPos, HiiPackageList, sizeof (EFI_HII_PACKAGE_LIST_HEADER));
UpdateBufferPos += sizeof (EFI_HII_PACKAGE_LIST_HEADER);
Updated = FALSE;
for (Index = 0; ; Index++) {
Status = GetPackageDataFromPackageList (HiiPackageList, Index, &PackageLength, &Package);
if (Status == EFI_SUCCESS) {
CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));
if ((PackageHeader.Type == EFI_HII_PACKAGE_FORM) && !Updated) {
Status = UpdateFormPackageData (FormSetGuid, FormId, Package, PackageLength, Label, Insert, Data, (UINT8 **)&TempBuffer, &TempBufferSize);
if (!EFI_ERROR(Status)) {
if (FormSetGuid == NULL) {
Updated = TRUE;
}
CopyMem (UpdateBufferPos, TempBuffer, TempBufferSize);
UpdateBufferPos += TempBufferSize;
gBS->FreePool (TempBuffer);
continue;
}
}
CopyMem (UpdateBufferPos, Package, PackageLength);
UpdateBufferPos += PackageLength;
} else if (Status == EFI_NOT_FOUND) {
break;
} else {
gBS->FreePool (HiiPackageList);
return Status;
}
}
//
// Update package list length
//
BufferSize = UpdateBufferPos - (UINT8 *) UpdateBuffer;
CopyMem (&UpdateBuffer->PackageLength, &BufferSize, sizeof (UINT32));
gBS->FreePool (HiiPackageList);
return HiiDatabase->UpdatePackageList (HiiDatabase, Handle, UpdateBuffer);
}
/**
Configure the buffer accrording to ConfigBody strings.
@param DefaultId the ID of default.
@param Buffer the start address of buffer.
@param BufferSize the size of buffer.
@param Number the number of the strings.
@retval EFI_BUFFER_TOO_SMALL the BufferSize is too small to operate.
@retval EFI_INVALID_PARAMETER Buffer is NULL or BufferSize is 0.
@retval EFI_SUCCESS Operation successful.
**/
EFI_STATUS
EFIAPI
IfrLibExtractDefault(
IN VOID *Buffer,
IN UINTN *BufferSize,
UINTN Number,
...
)
{
VA_LIST Args;
UINTN Index;
UINT32 TotalLen;
UINT8 *BufCfgArray;
UINT8 *BufferPos;
UINT16 Offset;
UINT16 Width;
UINT8 *Value;
if ((Buffer == NULL) || (BufferSize == NULL)) {
return EFI_INVALID_PARAMETER;
}
Offset = 0;
Width = 0;
Value = NULL;
VA_START (Args, Number);
for (Index = 0; Index < Number; Index++) {
BufCfgArray = (UINT8 *) VA_ARG (Args, VOID *);
CopyMem (&TotalLen, BufCfgArray, sizeof (UINT32));
BufferPos = BufCfgArray + sizeof (UINT32);
while ((UINT32)(BufferPos - BufCfgArray) < TotalLen) {
CopyMem (&Offset, BufferPos, sizeof (UINT16));
BufferPos += sizeof (UINT16);
CopyMem (&Width, BufferPos, sizeof (UINT16));
BufferPos += sizeof (UINT16);
Value = BufferPos;
BufferPos += Width;
if ((UINTN)(Offset + Width) > *BufferSize) {
return EFI_BUFFER_TOO_SMALL;
}
CopyMem ((UINT8 *)Buffer + Offset, Value, Width);
}
}
VA_END (Args);
*BufferSize = (UINTN)Offset;
return EFI_SUCCESS;
}
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