diff options
Diffstat (limited to 'MdeModulePkg/Library/UefiHiiLib/HiiLib.c')
| -rw-r--r-- | MdeModulePkg/Library/UefiHiiLib/HiiLib.c | 1458 |
1 files changed, 1402 insertions, 56 deletions
diff --git a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c index 5827f83693..de7cb3f46e 100644 --- a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c +++ b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c @@ -14,6 +14,23 @@ #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
//
@@ -30,6 +47,62 @@ GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_HII_PACKAGE_HEADER mEndOfPakageList = { };
/**
+ 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, then NULL is returned. If there are not enough
@@ -306,62 +379,6 @@ HiiGetHiiHandles ( }
/**
- 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;
-}
-
-/**
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.
@@ -680,6 +697,1335 @@ HiiConstructConfigHdr ( }
/**
+ 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 function shares the same logic to parse ConfigAltResp string
+ for setting default value and validating current setting.
+
+ @param ConfigResp
+ @param HiiPackageList
+ @param PackageListLength
+ @param VarGuid
+ @param VarName
+
+ @retval EFI_SUCCESS
+**/
+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 requied 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;
+ }
+
+ //
+ // 2. Check IFR value is in block data, then Validate Vaule
+ //
+ 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:
+ //
+ // Check the matched VarStoreId is found.
+ //
+ if (IfrVarStore == NULL) {
+ Status = EFI_NOT_FOUND;
+ goto Done;
+ }
+ break;
+ case EFI_IFR_ONE_OF_OP:
+ //
+ // Check whether current value is the one of option.
+ //
+
+ //
+ // 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.
+ //
+
+ //
+ // 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.
+ //
+
+ //
+ // 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
+ //
+
+ //
+ // 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.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 shares the same logic to parse ConfigAltResp 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.
+ //
+ 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)) {
+ goto Done;
+ }
+ }
+
+ //
+ // 3. Call ConfigRouting GetAltCfg(ConfigRoute, <ConfigResponse>, Guid, Name, DevicePath, AltCfgId, AltCfgResp)
+ // Get the default configuration string according to the found defaultname 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
+ );
+
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
+
+ //
+ // 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;
+ }
+
+ //
+ // Free the allocated pacakge buffer and the got ConfigResp string.
+ //
+ if (HiiPackageList != NULL) {
+ FreePool (HiiPackageList);
+ HiiPackageList = NULL;
+ }
+
+ FreePool (ConfigResp);
+ ConfigResp = NULL;
+
+NextConfigAltResp:
+ //
+ // 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 ExtractConfig 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);
+}
+
+/**
Allocates and returns a Null-terminated Unicode <ConfigAltResp> string.
If Guid is NULL, then ASSERT().
|