[PATCH] IntelSiliconPkg/BaseConfigBlockLib: Add function to iterate over Config Blocks
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Fedorowicz, Jakub <jakub.fedorowicz@...>
In BaseConfigBlockLib add function to get next config block from config blocks table in order to iterate over blocks of the same type.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3700
Signed-off-by: Jakub Fedorowicz jakub.fedorowicz@...
Cc: Ray Ni ray.ni@... Cc: Rangasai V Chaganty rangasai.v.chaganty@... --- Silicon/Intel/IntelSiliconPkg/Include/Library/ConfigBlockLib.h | 20 ++++++++++++++++++++ Silicon/Intel/IntelSiliconPkg/Library/BaseConfigBlockLib/BaseConfigBlockLib.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 71 insertions(+)
diff --git a/Silicon/Intel/IntelSiliconPkg/Include/Library/ConfigBlockLib.h b/Silicon/Intel/IntelSiliconPkg/Include/Library/ConfigBlockLib.h index 37a39681..77eff21b 100644 --- a/Silicon/Intel/IntelSiliconPkg/Include/Library/ConfigBlockLib.h +++ b/Silicon/Intel/IntelSiliconPkg/Include/Library/ConfigBlockLib.h @@ -45,6 +45,7 @@ AddConfigBlock ( /** Retrieve a specific Config Block data by GUID. + If there is more than one Config Block with given GUID, return the first found with given GUID. @param[in] ConfigBlockTableAddress - A pointer to the beginning of Config Block Table Address @param[in] ConfigBlockGuid - A pointer to the GUID uses to search specific Config Block @@ -61,4 +62,23 @@ GetConfigBlock ( OUT VOID **ConfigBlockAddress ); +/** + Search through ConfigBlockTable blocks to find following Config Block of the same GUID. + If there is no following Config Block found until the end of the table, return EFI_NOT_FOUND. + + @param[in] ConfigBlockTableAddress - A pointer to the beginning of Config Block Table + @param[in] ConfigBlockAddress - A pointer to the Config Block, in relation to which we start the search + @param[out] NextConfigBlockAddress - On return, points to a pointer to the found Config Block + + @retval EFI_NOT_FOUND - Could not find the following Config Block + @retval EFI_SUCCESS - Config Block found and return +**/ +EFI_STATUS +EFIAPI +GetNextConfigBlock ( + IN VOID *ConfigBlockTableAddress, + IN VOID *ConfigBlockAddress, + OUT VOID **NextConfigBlockAddress + ); + #endif // _CONFIG_BLOCK_LIB_H_ diff --git a/Silicon/Intel/IntelSiliconPkg/Library/BaseConfigBlockLib/BaseConfigBlockLib.c b/Silicon/Intel/IntelSiliconPkg/Library/BaseConfigBlockLib/BaseConfigBlockLib.c index c89699ea..04dc7d0b 100644 --- a/Silicon/Intel/IntelSiliconPkg/Library/BaseConfigBlockLib/BaseConfigBlockLib.c +++ b/Silicon/Intel/IntelSiliconPkg/Library/BaseConfigBlockLib/BaseConfigBlockLib.c @@ -95,6 +95,7 @@ AddConfigBlock ( /** Retrieve a specific Config Block data by GUID. + If there is more than one Config Block with given GUID, return the first found with given GUID. @param[in] ConfigBlockTableAddress - A pointer to the beginning of Config Block Table Address @param[in] ConfigBlockGuid - A pointer to the GUID uses to search specific Config Block @@ -137,3 +138,53 @@ GetConfigBlock ( return EFI_NOT_FOUND; } + +/** + Search through ConfigBlockTable blocks to find following Config Block of the same GUID. + If there is no following Config Block found until the end of the table, return EFI_NOT_FOUND. + + @param[in] ConfigBlockTableAddress - A pointer to the beginning of Config Block Table + @param[in] ConfigBlockAddress - A pointer to the Config Block, in relation to which we start the search + @param[out] NextConfigBlockAddress - On return, points to a pointer to the found Config Block + + @retval EFI_NOT_FOUND - Could not find the following Config Block + @retval EFI_SUCCESS - Config Block found and return +**/ +EFI_STATUS +EFIAPI +GetNextConfigBlock ( + IN VOID *ConfigBlockTableAddress, + IN VOID *ConfigBlockAddress, + OUT VOID **NextConfigBlockAddress + ) +{ + CONFIG_BLOCK_TABLE_HEADER *ConfigBlkTblHdrPtr; + UINTN ConfigBlkTblEndAddr; + UINTN ConfigBlkOffset; + CONFIG_BLOCK *TempConfigBlk; + EFI_GUID *TargetGuid; + lmao; + + ConfigBlkTblHdrPtr = (CONFIG_BLOCK_TABLE_HEADER *) ConfigBlockTableAddress; + ConfigBlkTblEndAddr = (UINTN) ConfigBlockTableAddress + (UINTN) ConfigBlkTblHdrPtr->Header.GuidHob.Header.HobLength; + + TempConfigBlk = (CONFIG_BLOCK *) ConfigBlockAddress; + TargetGuid = &(TempConfigBlk->Header.GuidHob.Name); + ConfigBlkOffset = (UINTN) ConfigBlockAddress + (UINTN) TempConfigBlk->Header.GuidHob.Header.HobLength; + + // + // Loop until exceeding ConfigBlockTable range + // + while (ConfigBlkOffset < ConfigBlkTblEndAddr) { + TempConfigBlk = (CONFIG_BLOCK *) ConfigBlkOffset; + + if (CompareGuid (TargetGuid, &(TempConfigBlk->Header.GuidHob.Name))) { + *NextConfigBlockAddress = (VOID *) TempConfigBlk; + return EFI_SUCCESS; + } + + ConfigBlkOffset += (UINTN) TempConfigBlk->Header.GuidHob.Header.HobLength; + } + + return EFI_NOT_FOUND; +} -- 2.30.0.windows.2
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