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MdePkg and MdeModulePkg Pcd: Add the new EFI_GET_PCD_INFO_PROTOCOL and EFI_GET_PCD_INFO_PPI support for PI 1.2.1 compliance.

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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14866 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Star Zeng
2013-11-20 00:44:25 +00:00
committed by lzeng14
parent 14b5e3fd78
commit 96d6d004aa
21 changed files with 1833 additions and 84 deletions
Download Patch File Download Diff File Expand all files Collapse all files

124
MdePkg/Library/DxePcdLib/DxePcdLib.c
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@ -18,17 +18,23 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Protocol/Pcd.h>
#include <Protocol/PiPcd.h>
#include <Protocol/PcdInfo.h>
#include <Protocol/PiPcdInfo.h>
#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
PCD_PROTOCOL *mPcd = NULL;
EFI_PCD_PROTOCOL *mPiPcd = NULL;
PCD_PROTOCOL *mPcd = NULL;
EFI_PCD_PROTOCOL *mPiPcd = NULL;
GET_PCD_INFO_PROTOCOL *mPcdInfo = NULL;
EFI_GET_PCD_INFO_PROTOCOL *mPiPcdInfo = NULL;
/**
Retrieves the PI PCD protocol from the handle database.
@retval EFI_PCD_PROTOCOL * The pointer to the EFI_PCD_PROTOCOL.
**/
EFI_PCD_PROTOCOL *
EFIAPI
@ -52,6 +58,8 @@ GetPiPcdProtocol (
/**
Retrieves the PCD protocol from the handle database.
@retval PCD_PROTOCOL * The pointer to the PCD_PROTOCOL.
**/
PCD_PROTOCOL *
EFIAPI
@ -73,6 +81,45 @@ GetPcdProtocol (
return mPcd;
}
/**
Retrieves the PI PCD info protocol from the handle database.
@retval EFI_GET_PCD_INFO_PROTOCOL * The pointer to the EFI_GET_PCD_INFO_PROTOCOL defined in PI 1.2.1 Vol 3.
**/
EFI_GET_PCD_INFO_PROTOCOL *
GetPiPcdInfoProtocolPointer (
VOID
)
{
EFI_STATUS Status;
if (mPiPcdInfo == NULL) {
Status = gBS->LocateProtocol (&gEfiGetPcdInfoProtocolGuid, NULL, (VOID **)&mPiPcdInfo);
ASSERT_EFI_ERROR (Status);
ASSERT (mPiPcdInfo != NULL);
}
return mPiPcdInfo;
}
/**
Retrieves the PCD info protocol from the handle database.
@retval GET_PCD_INFO_PROTOCOL * The pointer to the GET_PCD_INFO_PROTOCOL.
**/
GET_PCD_INFO_PROTOCOL *
GetPcdInfoProtocolPointer (
VOID
)
{
EFI_STATUS Status;
if (mPcdInfo == NULL) {
Status = gBS->LocateProtocol (&gGetPcdInfoProtocolGuid, NULL, (VOID **)&mPcdInfo);
ASSERT_EFI_ERROR (Status);
ASSERT (mPcdInfo != NULL);
}
return mPcdInfo;
}
/**
This function provides a means by which SKU support can be established in the PCD infrastructure.
@ -1037,5 +1084,78 @@ LibPatchPcdSetPtr (
return (VOID *) Buffer;
}
/**
Retrieve additional information associated with a PCD token.
This includes information such as the type of value the TokenNumber is associated with as well as possible
human readable name that is associated with the token.
If TokenNumber is not in the default token space specified, then ASSERT().
@param[in] TokenNumber The PCD token number.
@param[out] PcdInfo The returned information associated with the requested TokenNumber.
The caller is responsible for freeing the buffer that is allocated by callee for PcdInfo->PcdName.
**/
VOID
EFIAPI
LibPcdGetInfo (
IN UINTN TokenNumber,
OUT PCD_INFO *PcdInfo
)
{
EFI_STATUS Status;
Status = GetPcdInfoProtocolPointer()->GetInfo (TokenNumber, (EFI_PCD_INFO *) PcdInfo);
ASSERT_EFI_ERROR (Status);
}
/**
Retrieve additional information associated with a PCD token.
This includes information such as the type of value the TokenNumber is associated with as well as possible
human readable name that is associated with the token.
If TokenNumber is not in the token space specified by Guid, then ASSERT().
@param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.
@param[in] TokenNumber The PCD token number.
@param[out] PcdInfo The returned information associated with the requested TokenNumber.
The caller is responsible for freeing the buffer that is allocated by callee for PcdInfo->PcdName.
**/
VOID
EFIAPI
LibPcdGetInfoEx (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
OUT PCD_INFO *PcdInfo
)
{
EFI_STATUS Status;
Status = GetPiPcdInfoProtocolPointer()->GetInfo (Guid, TokenNumber, (EFI_PCD_INFO *) PcdInfo);
ASSERT_EFI_ERROR (Status);
}
/**
Retrieve the currently set SKU Id.
If the sku id got >= PCD_MAX_SKU_ID, then ASSERT().
@return The currently set SKU Id. If the platform has not set at a SKU Id, then the
default SKU Id value of 0 is returned. If the platform has set a SKU Id, then the currently set SKU
Id is returned.
**/
UINTN
EFIAPI
LibPcdGetSku (
VOID
)
{
UINTN SkuId;
SkuId = GetPiPcdInfoProtocolPointer()->GetSku ();
ASSERT (SkuId < PCD_MAX_SKU_ID);
return SkuId;
}