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| author | Star Zeng <star.zeng@intel.com> | 2013-11-20 00:44:25 +0000 |
|---|---|---|
| committer | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-11-20 00:44:25 +0000 |
| commit | 96d6d004aaf9da42c5fd9cd07035886937d42a69 (patch) | |
| tree | d37234172371bb439a6f2553e42e4af5e62e4ec1 /MdeModulePkg/Universal/PCD/Dxe/Pcd.c | |
| parent | 14b5e3fd787fb1ae0c354ea5169025a724f9cbb1 (diff) | |
| download | edk2-96d6d004aaf9da42c5fd9cd07035886937d42a69.zip edk2-96d6d004aaf9da42c5fd9cd07035886937d42a69.tar.gz edk2-96d6d004aaf9da42c5fd9cd07035886937d42a69.tar.bz2 | |
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.
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
Diffstat (limited to 'MdeModulePkg/Universal/PCD/Dxe/Pcd.c')
| -rw-r--r-- | MdeModulePkg/Universal/PCD/Dxe/Pcd.c | 100 |
1 files changed, 99 insertions, 1 deletions
diff --git a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c index 04fcd64..afe925c 100644 --- a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c +++ b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c @@ -89,6 +89,25 @@ EFI_PCD_PROTOCOL mEfiPcdInstance = { DxePcdGetNextTokenSpace
};
+///
+/// Instance of GET_PCD_INFO_PROTOCOL protocol is EDKII native implementation.
+/// This protocol instance support dynamic and dynamicEx type PCDs.
+///
+GET_PCD_INFO_PROTOCOL mGetPcdInfoInstance = {
+ DxeGetPcdInfoGetInfo,
+ DxeGetPcdInfoGetInfoEx,
+ DxeGetPcdInfoGetSku
+};
+
+///
+/// Instance of EFI_GET_PCD_INFO_PROTOCOL which is defined in PI 1.2.1 Vol 3.
+/// This PPI instance only support dyanmicEx type PCD.
+///
+EFI_GET_PCD_INFO_PROTOCOL mEfiGetPcdInfoInstance = {
+ DxeGetPcdInfoGetInfoEx,
+ DxeGetPcdInfoGetSku
+};
+
EFI_HANDLE mPcdHandle = NULL;
/**
@@ -129,11 +148,90 @@ PcdDxeInit ( &gEfiPcdProtocolGuid, &mEfiPcdInstance,
NULL
);
-
ASSERT_EFI_ERROR (Status);
+ if (FeaturePcdGet (PcdPcdInfoGeneration) && mPcdDatabase.DxeDb->PcdNameTableOffset != 0) {
+ //
+ // Install GET_PCD_INFO_PROTOCOL to handle dynamic type PCD
+ // Install EFI_GET_PCD_INFO_PROTOCOL to handle dynamicEx type PCD
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &mPcdHandle,
+ &gGetPcdInfoProtocolGuid, &mGetPcdInfoInstance,
+ &gEfiGetPcdInfoProtocolGuid, &mEfiGetPcdInfoInstance,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+
return Status;
+}
+
+/**
+ Retrieve additional information associated with a PCD token in the default token space.
+
+ 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.
+
+ @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.
+ @retval EFI_SUCCESS The PCD information was returned successfully.
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.
+**/
+EFI_STATUS
+EFIAPI
+DxeGetPcdInfoGetInfo (
+ IN UINTN TokenNumber,
+ OUT EFI_PCD_INFO *PcdInfo
+ )
+{
+ return DxeGetPcdInfo (NULL, TokenNumber, PcdInfo);
+}
+
+/**
+ 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.
+
+ @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.
+
+ @retval EFI_SUCCESS The PCD information was returned successfully.
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.
+**/
+EFI_STATUS
+EFIAPI
+DxeGetPcdInfoGetInfoEx (
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ OUT EFI_PCD_INFO *PcdInfo
+ )
+{
+ return DxeGetPcdInfo (Guid, TokenNumber, PcdInfo);
+}
+
+/**
+ Retrieve the currently set SKU Id.
+
+ @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
+DxeGetPcdInfoGetSku (
+ VOID
+ )
+{
+ if (!FeaturePcdGet (PcdPcdInfoGeneration)) {
+ return EFI_UNSUPPORTED;
+ }
+ return mPcdDatabase.PeiDb->SystemSkuId;
}
/**
|