From fef4cfa7ca4fceb69e3b9bb280584e6de8eac4b0 Mon Sep 17 00:00:00 2001 From: Liming Gao Date: Fri, 22 Dec 2017 11:50:49 +0800 Subject: MdeModulePkg: Enable Firmware to retrieve the default setting https://bugzilla.tianocore.org/show_bug.cgi?id=611 Add two PCDs and new PCD DB format definition Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao Reviewed-by: Star Zeng --- .../Include/Guid/PcdDataBaseSignatureGuid.h | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) (limited to 'MdeModulePkg/Include/Guid') diff --git a/MdeModulePkg/Include/Guid/PcdDataBaseSignatureGuid.h b/MdeModulePkg/Include/Guid/PcdDataBaseSignatureGuid.h index d2e848800b..9b1cb22bbb 100644 --- a/MdeModulePkg/Include/Guid/PcdDataBaseSignatureGuid.h +++ b/MdeModulePkg/Include/Guid/PcdDataBaseSignatureGuid.h @@ -146,5 +146,74 @@ typedef struct { DXE_PCD_DATABASE *DxeDb; } PCD_DATABASE; +typedef struct { + UINT32 Offset:24; + UINT32 Value:8; +} PCD_DATA_DELTA; + +typedef struct { + SKU_ID SkuId; + UINT16 DefaultId; + UINT8 Reserved[6]; +} PCD_DEFAULT_INFO; + +typedef struct { + // + // Full size, it must be at 8 byte alignment. + // + UINT32 DataSize; + // + // HeaderSize includes HeaderSize fields and DefaultInfo arrays + // + UINT32 HeaderSize; + // + // DefaultInfo arrays those have the same default setting. + // + PCD_DEFAULT_INFO DefaultInfo[1]; + // + // Default data is stored as variable storage or the array of DATA_DELTA. + // +} PCD_DEFAULT_DATA; + +#define PCD_NV_STORE_DEFAULT_BUFFER_SIGNATURE SIGNATURE_32('N', 'S', 'D', 'B') + +typedef struct { + // + // PCD_NV_STORE_DEFAULT_BUFFER_SIGNATURE + // + UINT32 Signature; + // + // Length of the taken default buffer + // + UINT32 Length; + // + // Length of the total reserved buffer + // + UINT32 MaxLength; + // + // Reserved for 8 byte alignment + // + UINT32 Reserved; + // one or more PCD_DEFAULT_DATA +} PCD_NV_STORE_DEFAULT_BUFFER_HEADER; + +// +// NvStoreDefaultValueBuffer layout: +// +-------------------------------------+ +// | PCD_NV_STORE_DEFAULT_BUFFER_HEADER | +// +-------------------------------------+ +// | PCD_DEFAULT_DATA (DEFAULT, Standard)| +// +-------------------------------------+ +// | PCD_DATA_DELTA (DEFAULT, Standard)| +// +-------------------------------------+ +// | ...... | +// +-------------------------------------+ +// | PCD_DEFAULT_DATA (SKU A, Standard) | +// +-------------------------------------+ +// | PCD_DATA_DELTA (SKU A, Standard) | +// +-------------------------------------+ +// | ...... | +// +-------------------------------------+ +// #endif -- cgit