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MdeModulePkg:Add new API HiiGetFormSetFromHiiHandle into UefiHiiLib 

This function is mainly through the Hii handle to get the formset opcode.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18684 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Dandan Bi 2015-10-27 10:19:29 +00:00 committed by dandanbi
parent 8b7a63e7e2
commit 8a4582838b
2 changed files with 134 additions and 0 deletions
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23
MdeModulePkg/Include/Library/HiiLib.h
View File

@ -224,6 +224,29 @@ HiiGetHiiHandles (
)
;
/**
This function allows a caller to extract the form set opcode form the Hii Handle.
The returned buffer is allocated using AllocatePool().The caller is responsible
for freeing the allocated buffer using FreePool().
@param Handle The HII handle.
@param Buffer On return, opints to a pointer which point to the buffer that contain the formset opcode.
@param BufferSize On return, points to the length of the buffer.
@retval EFI_OUT_OF_RESOURCES No enough memory resource is allocated.
@retval EFI_NOT_FOUND Can't find the package data for the input Handle.
@retval EFI_INVALID_PARAMETER The input parameters are not correct.
@retval EFI_SUCCESS Get the formset opcode from the hii handle sucessfully.
**/
EFI_STATUS
EFIAPI
HiiGetFormSetFromHiiHandle(
IN EFI_HII_HANDLE Handle,
OUT EFI_IFR_FORM_SET **Buffer,
OUT UINTN *BufferSize
);
/**
Retrieves a pointer to a Null-terminated ASCII string containing the list
of languages that an HII handle in the HII Database supports. The returned

111
MdeModulePkg/Library/UefiHiiLib/HiiLib.c
View File

@ -377,6 +377,117 @@ HiiGetHiiHandles (
}
}
/**
This function allows a caller to extract the form set opcode form the Hii Handle.
The returned buffer is allocated using AllocatePool().The caller is responsible
for freeing the allocated buffer using FreePool().
@param Handle The HII handle.
@param Buffer On return, opints to a pointer which point to the buffer that contain the formset opcode.
@param BufferSize On return, points to the length of the buffer.
@retval EFI_OUT_OF_RESOURCES No enough memory resource is allocated.
@retval EFI_NOT_FOUND Can't find the package data for the input Handle.
@retval EFI_INVALID_PARAMETER The input parameters are not correct.
@retval EFI_SUCCESS Get the formset opcode from the hii handle sucessfully.
**/
EFI_STATUS
EFIAPI
HiiGetFormSetFromHiiHandle(
IN EFI_HII_HANDLE Handle,
OUT EFI_IFR_FORM_SET **Buffer,
OUT UINTN *BufferSize
)
{
EFI_STATUS Status;
UINTN PackageListSize;
UINTN TempSize;
EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;
UINT8 *Package;
UINT8 *OpCodeData;
EFI_IFR_FORM_SET *FormSetBuffer;
EFI_IFR_FORM_SET *TempBuffer;
UINT32 Offset;
UINT32 Offset2;
UINT32 PackageListLength;
EFI_HII_PACKAGE_HEADER PackageHeader;
TempSize = 0;
FormSetBuffer = NULL;
TempBuffer = NULL;
//
// Get HII PackageList
//
PackageListSize = 0;
HiiPackageList = NULL;
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, Handle, &PackageListSize, HiiPackageList);
if (EFI_ERROR (Status) && (Status != EFI_BUFFER_TOO_SMALL)) {
return Status;
}
HiiPackageList = AllocatePool (PackageListSize);
if (HiiPackageList == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = gHiiDatabase->ExportPackageLists (gHiiDatabase, Handle, &PackageListSize, HiiPackageList);
ASSERT_EFI_ERROR (Status);
//
// Get Form package from this HII package List
//
Status = EFI_NOT_FOUND;
Offset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);
PackageListLength = ReadUnaligned32 (&HiiPackageList->PackageLength);
while (Offset < PackageListLength) {
Package = ((UINT8 *) HiiPackageList) + Offset;
CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));
Offset += PackageHeader.Length;
if (PackageHeader.Type != EFI_HII_PACKAGE_FORMS) {
continue;
}
//
// Search FormSet Opcode in this Form Package
//
Offset2 = sizeof (EFI_HII_PACKAGE_HEADER);
while (Offset2 < PackageHeader.Length) {
OpCodeData = Package + Offset2;
Offset2 += ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
if (((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode != EFI_IFR_FORM_SET_OP) {
continue;
}
if (FormSetBuffer != NULL){
TempBuffer = AllocateCopyPool (TempSize + ((EFI_IFR_OP_HEADER *) OpCodeData)->Length, FormSetBuffer);
CopyMem (TempBuffer + TempSize, OpCodeData, ((EFI_IFR_OP_HEADER *) OpCodeData)->Length);
FreePool(FormSetBuffer);
} else {
TempBuffer = AllocateCopyPool (TempSize + ((EFI_IFR_OP_HEADER *) OpCodeData)->Length, OpCodeData);
}
TempSize += ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
FormSetBuffer = TempBuffer;
Status = EFI_SUCCESS;
//
//One form package has one formset, exit current form package to search other form package in the packagelist.
//
break;
}
}
FreePool (HiiPackageList);
*BufferSize = TempSize;
*Buffer = FormSetBuffer;
return Status;
}
/**
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.