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| author | Dandan Bi <dandan.bi@intel.com> | 2015-10-27 10:19:29 +0000 |
|---|---|---|
| committer | dandanbi <dandanbi@Edk2> | 2015-10-27 10:19:29 +0000 |
| commit | 8a4582838b42e92d6d6429a7289b04e50ad084de (patch) | |
| tree | d6f62702530048a68c0ce103d9f5cca926a1be4b /MdeModulePkg/Library/UefiHiiLib | |
| parent | 8b7a63e7e23f19b5947f8d6eedd22872d352dc54 (diff) | |
| download | edk2-8a4582838b42e92d6d6429a7289b04e50ad084de.tar.gz edk2-8a4582838b42e92d6d6429a7289b04e50ad084de.tar.bz2 edk2-8a4582838b42e92d6d6429a7289b04e50ad084de.zip | |
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
Diffstat (limited to 'MdeModulePkg/Library/UefiHiiLib')
| -rw-r--r-- | MdeModulePkg/Library/UefiHiiLib/HiiLib.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c index 66d72acf27..1aa0edc62c 100644 --- a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c +++ b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c @@ -378,6 +378,117 @@ 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.
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