diff options
| author | Dandan Bi <dandan.bi@intel.com> | 2016-04-13 16:47:25 +0800 |
|---|---|---|
| committer | Star Zeng <star.zeng@intel.com> | 2016-04-19 17:53:59 +0800 |
| commit | 74e8963c9b661eaa4e828b0ad2d8925e1622ac49 (patch) | |
| tree | 26f3de507d73e5ab6d790a183d6cd22a6c8e8901 /MdeModulePkg/Universal | |
| parent | 9b72af13e294600faa6819c63b3808d5c3803275 (diff) | |
| download | edk2-platforms-74e8963c9b661eaa4e828b0ad2d8925e1622ac49.tar.xz | |
MdeModulePkg/HiiDatabaseDxe: Support EfiVarStore to get AltCfg from Driver
Allow EfiVarStore to get <AltResp> from Hii Driver, and enhance code logic
in MergeDefaultString function to get a full AltCfgResp.
The logic in function MergeDefaultString after enhancement:
(1) If there are no <AltResp> in AltCfgResp, merge the <AltResp> in
DefaultAltCfgResp to AltCfgResp.
(2) If there are <AltResp> in AltCfgResp, for the same <AltConfigHdr>, if
the <ConfigElement> already in AltCfgResp, don't need to merge from
DefaultAltCfgResp, else merge the <ConfigElement> in the DefaultAltCfgResp
to the related <AltResp> in AltCfgResp.
AltCfgResp: Generated by Driver.
DefaultAltCfgResp: Generated by HiiDatabase.
Cc: Liming Gao <liming.gao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
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>
Diffstat (limited to 'MdeModulePkg/Universal')
| -rw-r--r-- | MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c | 541 |
1 files changed, 541 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c index 4ed4eccdc2..5e778fa4c2 100644 --- a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c +++ b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c @@ -510,6 +510,477 @@ Exit: }
/**
+ To find the BlockName in the string with same value.
+
+ @param String Pointer to a Null-terminated Unicode string.
+ @param BlockName Pointer to a Null-terminated Unicode string to search for.
+ @param Buffer Pointer to the value correspond to the BlockName.
+ @param Found The Block whether has been found.
+ @param BufferLen The length of the buffer.
+
+ @retval EFI_OUT_OF_RESOURCES Insufficient resources to store neccessary structures.
+ @retval EFI_SUCCESS The function finishes successfully.
+
+**/
+EFI_STATUS
+FindSameBlockElement(
+ IN EFI_STRING String,
+ IN EFI_STRING BlockName,
+ IN UINT8 *Buffer,
+ OUT BOOLEAN *Found,
+ IN UINTN BufferLen
+ )
+{
+ EFI_STRING BlockPtr;
+ UINTN Length;
+ UINT8 *TempBuffer;
+ EFI_STATUS Status;
+
+ TempBuffer = NULL;
+ *Found = FALSE;
+ BlockPtr = StrStr (String, BlockName);
+
+ while (BlockPtr != NULL) {
+ BlockPtr += StrLen (BlockName);
+ Status = GetValueOfNumber (BlockPtr, &TempBuffer, &Length);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ ASSERT (TempBuffer != NULL);
+ if ((BufferLen == Length) && (0 == CompareMem (Buffer, TempBuffer, Length))) {
+ *Found = TRUE;
+ return EFI_SUCCESS;
+ } else {
+ FreePool (TempBuffer);
+ TempBuffer = NULL;
+ BlockPtr = StrStr (BlockPtr + 1, BlockName);
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+/**
+ Compare the <AltResp> in ConfigAltResp and DefaultAltCfgResp, if the <AltResp>
+ in DefaultAltCfgResp but not in ConfigAltResp,add it to the ConfigAltResp.
+
+ @param DefaultAltCfgResp Pointer to a null-terminated Unicode string in
+ <MultiConfigAltResp> format. The default value
+ string may contain more than one ConfigAltResp
+ string for the different varstore buffer.
+ @param ConfigAltResp Pointer to a null-terminated Unicode string in
+ <ConfigAltResp> format.
+ @param AltConfigHdr Pointer to a Unicode string in <AltConfigHdr> format.
+ @param ConfigAltRespChanged Whether the ConfigAltResp has been changed.
+
+ @retval EFI_OUT_OF_RESOURCES Insufficient resources to store neccessary structures.
+ @retval EFI_SUCCESS The function finishes successfully.
+
+**/
+EFI_STATUS
+CompareBlockElementDefault (
+ IN EFI_STRING DefaultAltCfgResp,
+ IN OUT EFI_STRING *ConfigAltResp,
+ IN EFI_STRING AltConfigHdr,
+ IN OUT BOOLEAN *ConfigAltRespChanged
+)
+{
+ EFI_STATUS Status;
+ EFI_STRING BlockPtr;
+ EFI_STRING BlockPtrStart;
+ EFI_STRING StringPtr;
+ EFI_STRING AppendString;
+ EFI_STRING AltConfigHdrPtr;
+ UINT8 *TempBuffer;
+ UINTN OffsetLength;
+ UINTN AppendSize;
+ UINTN TotalSize;
+ BOOLEAN FoundOffset;
+
+ AppendString = NULL;
+ TempBuffer = NULL;
+ //
+ // Make BlockPtr point to the first <BlockConfig> with AltConfigHdr in DefaultAltCfgResp.
+ //
+ AltConfigHdrPtr = StrStr (DefaultAltCfgResp, AltConfigHdr);
+ ASSERT (AltConfigHdrPtr != NULL);
+ BlockPtr = StrStr (AltConfigHdrPtr, L"&OFFSET=");
+ //
+ // Make StringPtr point to the AltConfigHdr in ConfigAltResp.
+ //
+ StringPtr = StrStr (*ConfigAltResp, AltConfigHdr);
+ ASSERT (StringPtr != NULL);
+
+ while (BlockPtr != NULL) {
+ //
+ // Find the "&OFFSET=<Number>" block and get the value of the Number with AltConfigHdr in DefaultAltCfgResp.
+ //
+ BlockPtrStart = BlockPtr;
+ BlockPtr += StrLen (L"&OFFSET=");
+ Status = GetValueOfNumber (BlockPtr, &TempBuffer, &OffsetLength);
+ if (EFI_ERROR (Status)) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+ //
+ // To find the same "&OFFSET=<Number>" block in ConfigAltResp.
+ //
+ Status = FindSameBlockElement (StringPtr, L"&OFFSET=", TempBuffer, &FoundOffset, OffsetLength);
+ if (TempBuffer != NULL) {
+ FreePool (TempBuffer);
+ TempBuffer = NULL;
+ }
+ if (EFI_ERROR (Status)) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+ if (!FoundOffset) {
+ //
+ // Don't find the same "&OFFSET=<Number>" block in ConfigAltResp.
+ // Calculate the size of <BlockConfig>.
+ // <BlockConfig>::='OFFSET='<Number>'&WIDTH='<Number>'&VALUE='<Number>.
+ //
+ BlockPtr = StrStr (BlockPtr + 1, L"&OFFSET=");
+ if (BlockPtr != NULL) {
+ AppendSize = (BlockPtr - BlockPtrStart) * sizeof (CHAR16);
+ } else {
+ AppendSize = StrSize (BlockPtrStart);
+ }
+ //
+ // Copy the <BlockConfig> to AppendString.
+ //
+ if (AppendString == NULL) {
+ AppendString = (EFI_STRING) AllocateZeroPool (AppendSize + sizeof (CHAR16));
+ StrnCatS (AppendString, AppendSize / sizeof (CHAR16) + 1, BlockPtrStart, AppendSize / sizeof (CHAR16));
+ } else {
+ TotalSize = StrSize (AppendString) + AppendSize + sizeof (CHAR16);
+ AppendString = (EFI_STRING) ReallocatePool (
+ StrSize (AppendString),
+ TotalSize,
+ AppendString
+ );
+ if (AppendString == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+ StrnCatS (AppendString, TotalSize / sizeof (CHAR16), BlockPtrStart, AppendSize / sizeof (CHAR16));
+ }
+ } else {
+ //
+ // To find next "&OFFSET=<Number>" block with AltConfigHdr in DefaultAltCfgResp.
+ //
+ BlockPtr = StrStr (BlockPtr + 1, L"&OFFSET=");
+ }
+ }
+
+ if (AppendString != NULL) {
+ //
+ // Reallocate ConfigAltResp to copy the AppendString.
+ //
+ TotalSize = StrSize (*ConfigAltResp) + StrSize (AppendString) + sizeof (CHAR16);
+ *ConfigAltResp = (EFI_STRING) ReallocatePool (
+ StrSize (*ConfigAltResp),
+ TotalSize,
+ *ConfigAltResp
+ );
+ if (*ConfigAltResp == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+ StrCatS (*ConfigAltResp, TotalSize / sizeof (CHAR16), AppendString);
+ *ConfigAltRespChanged = TRUE;
+ }
+
+ Status = EFI_SUCCESS;
+
+Exit:
+ if (AppendString != NULL) {
+ FreePool (AppendString);
+ }
+
+ return Status;
+}
+
+/**
+ Compare the <AltResp> in ConfigAltResp and DefaultAltCfgResp, if the <AltResp>
+ in DefaultAltCfgResp but not in ConfigAltResp,add it to the ConfigAltResp.
+
+ @param DefaultAltCfgResp Pointer to a null-terminated Unicode string in
+ <MultiConfigAltResp> format. The default value
+ string may contain more than one ConfigAltResp
+ string for the different varstore buffer.
+ @param ConfigAltResp Pointer to a null-terminated Unicode string in
+ <ConfigAltResp> format.
+ @param AltConfigHdr Pointer to a Unicode string in <AltConfigHdr> format.
+ @param ConfigAltRespChanged Whether the ConfigAltResp has been changed.
+
+ @retval EFI_OUT_OF_RESOURCES Insufficient resources to store neccessary structures.
+ @retval EFI_SUCCESS The function finishes successfully.
+
+**/
+EFI_STATUS
+CompareNameElementDefault (
+ IN EFI_STRING DefaultAltCfgResp,
+ IN OUT EFI_STRING *ConfigAltResp,
+ IN EFI_STRING AltConfigHdr,
+ IN OUT BOOLEAN *ConfigAltRespChanged
+)
+{
+ EFI_STATUS Status;
+ EFI_STRING NvConfigPtr;
+ EFI_STRING NvConfigStart;
+ EFI_STRING NvConfigValuePtr;
+ EFI_STRING StringPtr;
+ EFI_STRING NvConfigExist;
+ EFI_STRING AppendString;
+ CHAR16 TempChar;
+ UINTN AppendSize;
+ UINTN TotalSize;
+
+ AppendString = NULL;
+ NvConfigExist = NULL;
+ //
+ // Make NvConfigPtr point to the first <NvConfig> with AltConfigHdr in DefaultAltCfgResp.
+ //
+ NvConfigPtr = StrStr (DefaultAltCfgResp, AltConfigHdr);
+ ASSERT (NvConfigPtr != NULL);
+ NvConfigPtr = StrStr (NvConfigPtr + StrLen(AltConfigHdr),L"&");
+ //
+ // Make StringPtr point to the first <NvConfig> with AltConfigHdr in ConfigAltResp.
+ //
+ StringPtr = StrStr (*ConfigAltResp, AltConfigHdr);
+ ASSERT (StringPtr != NULL);
+ StringPtr = StrStr (StringPtr + StrLen (AltConfigHdr), L"&");
+ ASSERT (StringPtr != NULL);
+
+ while (NvConfigPtr != NULL) {
+ //
+ // <NvConfig> ::= <Label>'='<String> | <Label>'='<Number>.
+ // Get the <Label> with AltConfigHdr in DefaultAltCfgResp.
+ //
+ NvConfigStart = NvConfigPtr;
+ NvConfigValuePtr = StrStr (NvConfigPtr + 1, L"=");
+ ASSERT (NvConfigValuePtr != NULL);
+ TempChar = *NvConfigValuePtr;
+ *NvConfigValuePtr = L'\0';
+ //
+ // Get the <Label> with AltConfigHdr in ConfigAltResp.
+ //
+ NvConfigExist = StrStr (StringPtr, NvConfigPtr);
+ if (NvConfigExist == NULL) {
+ //
+ // Don't find same <Label> in ConfigAltResp.
+ // Calculate the size of <NvConfig>.
+ //
+ *NvConfigValuePtr = TempChar;
+ NvConfigPtr = StrStr (NvConfigPtr + 1, L"&");
+ if (NvConfigPtr != NULL) {
+ AppendSize = (NvConfigPtr - NvConfigStart) * sizeof (CHAR16);
+ } else {
+ AppendSize = StrSize (NvConfigStart);
+ }
+ //
+ // Copy the <NvConfig> to AppendString.
+ //
+ if (AppendString == NULL) {
+ AppendString = (EFI_STRING) AllocateZeroPool (AppendSize + sizeof (CHAR16));
+ StrnCatS (AppendString, AppendSize / sizeof (CHAR16) + 1, NvConfigStart, AppendSize / sizeof (CHAR16));
+ } else {
+ TotalSize = StrSize (AppendString) + AppendSize + sizeof (CHAR16);
+ AppendString = (EFI_STRING) ReallocatePool (
+ StrSize (AppendString),
+ TotalSize,
+ AppendString
+ );
+ if (AppendString == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+ StrnCatS (AppendString, TotalSize / sizeof (CHAR16), NvConfigStart, AppendSize / sizeof (CHAR16));
+ }
+ } else {
+ //
+ // To find next <Label> in DefaultAltCfgResp.
+ //
+ *NvConfigValuePtr = TempChar;
+ NvConfigPtr = StrStr (NvConfigPtr + 1, L"&");
+ }
+ }
+ if (AppendString != NULL) {
+ //
+ // Reallocate ConfigAltResp to copy the AppendString.
+ //
+ TotalSize = StrSize (*ConfigAltResp) + StrSize (AppendString) + sizeof (CHAR16);
+ *ConfigAltResp = (EFI_STRING) ReallocatePool (
+ StrSize (*ConfigAltResp),
+ StrSize (*ConfigAltResp) + StrSize (AppendString) + sizeof (CHAR16),
+ *ConfigAltResp
+ );
+ if (*ConfigAltResp == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+ StrCatS (*ConfigAltResp, TotalSize / sizeof (CHAR16), AppendString);
+ *ConfigAltRespChanged = TRUE;
+ }
+ Status = EFI_SUCCESS;
+
+Exit:
+ if (AppendString != NULL) {
+ FreePool (AppendString);
+ }
+ return Status;
+}
+
+/**
+ Compare the <AltResp> in AltCfgResp and DefaultAltCfgResp, if the <AltResp>
+ in DefaultAltCfgResp but not in AltCfgResp,add it to the AltCfgResp.
+
+ @param AltCfgResp Pointer to a null-terminated Unicode string in
+ <ConfigAltResp> format.
+ @param DefaultAltCfgResp Pointer to a null-terminated Unicode string in
+ <MultiConfigAltResp> format. The default value
+ string may contain more than one ConfigAltResp
+ string for the different varstore buffer.
+ @param AltConfigHdr Pointer to a Unicode string in <AltConfigHdr> format.
+
+ @retval EFI_OUT_OF_RESOURCES Insufficient resources to store neccessary
+ structures.
+ @retval EFI_SUCCESS The function finishes successfully.
+
+**/
+EFI_STATUS
+CompareAndMergeDefaultString (
+ IN OUT EFI_STRING *AltCfgResp,
+ IN EFI_STRING DefaultAltCfgResp,
+ IN EFI_STRING AltConfigHdr
+ )
+{
+ EFI_STATUS Status;
+ EFI_STRING AltCfgRespBackup;
+ EFI_STRING AltConfigHdrPtr;
+ EFI_STRING AltConfigHdrPtrNext;
+ EFI_STRING ConfigAltResp;
+ EFI_STRING StringPtr;
+ EFI_STRING StringPtrNext;
+ EFI_STRING BlockPtr;
+ UINTN ReallocateSize;
+ CHAR16 TempChar;
+ CHAR16 TempCharA;
+ BOOLEAN ConfigAltRespChanged;
+
+ Status = EFI_OUT_OF_RESOURCES;
+ BlockPtr = NULL;
+ AltConfigHdrPtrNext = NULL;
+ StringPtrNext = NULL;
+ ConfigAltResp = NULL;
+ AltCfgRespBackup = NULL;
+ ConfigAltRespChanged = FALSE;
+
+ //
+ //To find the <AltResp> with AltConfigHdr in DefaultAltCfgResp, ignore other <AltResp> which follow it.
+ //
+ AltConfigHdrPtr = StrStr (DefaultAltCfgResp, AltConfigHdr);
+ ASSERT (AltConfigHdrPtr != NULL);
+ AltConfigHdrPtrNext = StrStr (AltConfigHdrPtr + 1, L"&GUID");
+ if (AltConfigHdrPtrNext != NULL) {
+ TempChar = *AltConfigHdrPtrNext;
+ *AltConfigHdrPtrNext = L'\0';
+ }
+ //
+ // To find the <AltResp> with AltConfigHdr in AltCfgResp, ignore other <AltResp> which follow it.
+ //
+ StringPtr = StrStr (*AltCfgResp, AltConfigHdr);
+ StringPtrNext = StrStr (StringPtr + 1, L"&GUID");
+ if (StringPtrNext != NULL) {
+ TempCharA = *StringPtrNext;
+ *StringPtrNext = L'\0';
+ }
+ //
+ // Copy the content of <ConfigAltResp> which contain current AltConfigHdr in AltCfgResp.
+ //
+ ConfigAltResp = AllocateCopyPool (StrSize (*AltCfgResp), *AltCfgResp);
+ if (ConfigAltResp == NULL) {
+ goto Exit;
+ }
+ //
+ // To find the <ConfigBody> with AltConfigHdr in DefaultAltCfgResp.
+ //
+ BlockPtr = StrStr (AltConfigHdrPtr, L"&OFFSET=");
+ if (BlockPtr != NULL) {
+ //
+ // <BlockConfig>::='OFFSET='<Number>'&WIDTH='<Number>'&VALUE='<Number> style.
+ // Call function CompareBlockElementDefault to compare the <BlockConfig> in DefaultAltCfgResp and ConfigAltResp.
+ // The ConfigAltResp which may contain the new <BlockConfig> get from DefaultAltCfgResp.
+ //
+ Status = CompareBlockElementDefault (DefaultAltCfgResp, &ConfigAltResp, AltConfigHdr, &ConfigAltRespChanged);
+ if (EFI_ERROR(Status)) {
+ goto Exit;
+ }
+ } else {
+ //
+ // <NvConfig> ::= <Label>'='<String> | <Label>'='<Number> style.
+ // Call function CompareNameElementDefault to compare the <NvConfig> in DefaultAltCfgResp and ConfigAltResp.
+ // The ConfigAltResp which may contain the new <NvConfig> get from DefaultAltCfgResp.
+ //
+ Status = CompareNameElementDefault (DefaultAltCfgResp, &ConfigAltResp, AltConfigHdr, &ConfigAltRespChanged);
+ if (EFI_ERROR(Status)) {
+ goto Exit;
+ }
+ }
+ //
+ // Restore the AltCfgResp.
+ //
+ if (StringPtrNext != NULL) {
+ *StringPtrNext = TempCharA;
+ }
+
+ //
+ // If the ConfigAltResp has no change,no need to update the content in AltCfgResp.
+ //
+ if (ConfigAltRespChanged == FALSE) {
+ Status = EFI_SUCCESS;
+ goto Exit;
+ }
+ //
+ // ConfigAltResp has been changed, need to update the content in AltCfgResp.
+ //
+ if (StringPtrNext != NULL) {
+ ReallocateSize = StrSize (ConfigAltResp) + StrSize (StringPtrNext) + sizeof (CHAR16);
+ } else {
+ ReallocateSize = StrSize (ConfigAltResp) + sizeof (CHAR16);
+ }
+
+ AltCfgRespBackup = (EFI_STRING) AllocateZeroPool (ReallocateSize);
+ if (AltCfgRespBackup == NULL) {
+ goto Exit;
+ }
+
+ StrCatS (AltCfgRespBackup, ReallocateSize / sizeof (CHAR16), ConfigAltResp);
+ if (StringPtrNext != NULL) {
+ StrCatS (AltCfgRespBackup, ReallocateSize / sizeof (CHAR16), StringPtrNext);
+ }
+
+ FreePool (*AltCfgResp);
+ *AltCfgResp = AltCfgRespBackup;
+
+ Status = EFI_SUCCESS;
+
+Exit:
+ if (ConfigAltResp != NULL) {
+ FreePool(ConfigAltResp);
+ }
+ //
+ // Restore the DefaultAltCfgResp.
+ //
+ if ( AltConfigHdrPtrNext != NULL) {
+ *AltConfigHdrPtrNext = TempChar;
+ AltConfigHdrPtrNext = NULL;
+ }
+
+ return Status;
+}
+
+/**
This function merges DefaultAltCfgResp string into AltCfgResp string for
the missing AltCfgId in AltCfgResq.
@@ -632,6 +1103,13 @@ MergeDefaultString ( StrCatS (*AltCfgResp, TotalSize / sizeof (CHAR16), StringPtrDefault);
*StringPtrEnd = TempChar;
}
+ } else {
+ //
+ // The AltCfgResp contains <AltCfgResp>.
+ // If the <ConfigElement> in <AltCfgResp> in the DefaultAltCfgResp but not in the
+ // related <AltCfgResp> in AltCfgResp, merge it to AltCfgResp. else no need to merge.
+ //
+ CompareAndMergeDefaultString (AltCfgResp, DefaultAltCfgResp, AltConfigHdr);
}
//
@@ -3802,6 +4280,8 @@ HiiConfigRoutingExtractConfig ( EFI_HII_CONFIG_ACCESS_PROTOCOL *ConfigAccess;
EFI_STRING AccessProgress;
EFI_STRING AccessResults;
+ EFI_STRING AccessProgressBackup;
+ EFI_STRING AccessResultsBackup;
EFI_STRING DefaultResults;
BOOLEAN FirstElement;
BOOLEAN IfrDataParsedFlag;
@@ -3809,6 +4289,9 @@ HiiConfigRoutingExtractConfig ( EFI_IFR_VARSTORE_EFI *EfiVarStoreInfo;
EFI_STRING ErrorPtr;
UINTN DevicePathSize;
+ UINTN ConigStringSize;
+ UINTN ConigStringSizeNewsize;
+ EFI_STRING ConfigStringPtr;
if (This == NULL || Progress == NULL || Results == NULL) {
return EFI_INVALID_PARAMETER;
@@ -3827,6 +4310,8 @@ HiiConfigRoutingExtractConfig ( Status = EFI_SUCCESS;
AccessResults = NULL;
AccessProgress = NULL;
+ AccessResultsBackup = NULL;
+ AccessProgressBackup = NULL;
DevicePath = NULL;
IfrDataParsedFlag = FALSE;
IsEfiVarStore = FALSE;
@@ -3976,6 +4461,62 @@ HiiConfigRoutingExtractConfig ( //
Status = GetConfigRespFromEfiVarStore(This, EfiVarStoreInfo, ConfigRequest, &AccessResults, &AccessProgress);
FreePool (EfiVarStoreInfo);
+ if (EFI_ERROR (Status)) {
+ //
+ // AccessProgress indicates the parsing progress on <ConfigRequest>.
+ // Map it to the progress on <MultiConfigRequest> then return it.
+ //
+ *Progress = StrStr (StringPtr, AccessProgress);
+ goto Done;
+ }
+
+ //
+ // For EfiVarstore, call corresponding ConfigAccess protocol to get the AltCfgResp from driver.
+ //
+ Status = gBS->HandleProtocol (
+ DriverHandle,
+ &gEfiHiiConfigAccessProtocolGuid,
+ (VOID **) &ConfigAccess
+ );
+ if (EFI_ERROR (Status)) {
+ //
+ // The driver has EfiVarStore, may not install ConfigAccess protocol.
+ // So ignore the error status in this case.
+ //
+ Status = EFI_SUCCESS;
+ } else {
+ Status = ConfigAccess->ExtractConfig (
+ ConfigAccess,
+ ConfigRequest,
+ &AccessProgressBackup,
+ &AccessResultsBackup
+ );
+ if (!EFI_ERROR(Status)) {
+ //
+ //Merge the AltCfgResp in AccessResultsBackup to AccessResults
+ //
+ if ((AccessResultsBackup != NULL) && (StrStr (AccessResultsBackup, L"&ALTCFG=") != NULL)) {
+ ConigStringSize = StrSize (AccessResults);
+ ConfigStringPtr = StrStr (AccessResultsBackup, L"&GUID=");
+ ConigStringSizeNewsize = StrSize (ConfigStringPtr) + ConigStringSize + sizeof (CHAR16);
+ AccessResults = (EFI_STRING) ReallocatePool (
+ ConigStringSize,
+ ConigStringSizeNewsize,
+ AccessResults);
+ StrCatS (AccessResults, ConigStringSizeNewsize / sizeof (CHAR16), ConfigStringPtr);
+ }
+ } else {
+ //
+ // In the ExtractConfig function of some driver may not support EfiVarStore,
+ // may return error status, just ignore the error status in this case.
+ //
+ Status = EFI_SUCCESS;
+ }
+ if (AccessResultsBackup != NULL) {
+ FreePool (AccessResultsBackup);
+ AccessResultsBackup = NULL;
+ }
+ }
} else {
//
// Call corresponding ConfigAccess protocol to extract settings
|