diff options
| 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/Pei/Pcd.c | |
| parent | 14b5e3fd787fb1ae0c354ea5169025a724f9cbb1 (diff) | |
| download | edk2-platforms-96d6d004aaf9da42c5fd9cd07035886937d42a69.tar.xz | |
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/Pei/Pcd.c')
| -rw-r--r-- | MdeModulePkg/Universal/PCD/Pei/Pcd.c | 119 |
1 files changed, 115 insertions, 4 deletions
diff --git a/MdeModulePkg/Universal/PCD/Pei/Pcd.c b/MdeModulePkg/Universal/PCD/Pei/Pcd.c index 557b915a12..a9ee051263 100644 --- a/MdeModulePkg/Universal/PCD/Pei/Pcd.c +++ b/MdeModulePkg/Universal/PCD/Pei/Pcd.c @@ -83,6 +83,25 @@ EFI_PEI_PCD_PPI mEfiPcdPpiInstance = { PeiPcdGetNextTokenSpace
};
+///
+/// Instance of GET_PCD_INFO_PPI protocol is EDKII native implementation.
+/// This protocol instance support dynamic and dynamicEx type PCDs.
+///
+GET_PCD_INFO_PPI mGetPcdInfoInstance = {
+ PeiGetPcdInfoGetInfo,
+ PeiGetPcdInfoGetInfoEx,
+ PeiGetPcdInfoGetSku
+};
+
+///
+/// Instance of EFI_GET_PCD_INFO_PPI which is defined in PI 1.2.1 Vol 3.
+/// This PPI instance only support dyanmicEx type PCD.
+///
+EFI_GET_PCD_INFO_PPI mEfiGetPcdInfoInstance = {
+ PeiGetPcdInfoGetInfoEx,
+ PeiGetPcdInfoGetSku
+};
+
EFI_PEI_PPI_DESCRIPTOR mPpiList[] = {
{
EFI_PEI_PPI_DESCRIPTOR_PPI,
@@ -96,6 +115,19 @@ EFI_PEI_PPI_DESCRIPTOR mPpiList[] = { }
};
+EFI_PEI_PPI_DESCRIPTOR mPpiList2[] = {
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI,
+ &gGetPcdInfoPpiGuid,
+ &mGetPcdInfoInstance
+ },
+ {
+ (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+ &gEfiGetPcdInfoPpiGuid,
+ &mEfiGetPcdInfoInstance
+ }
+};
+
/**
Main entry for PCD PEIM driver.
@@ -114,20 +146,99 @@ PcdPeimInit ( IN CONST EFI_PEI_SERVICES **PeiServices
)
{
- EFI_STATUS Status;
-
- BuildPcdDatabase (FileHandle);
+ EFI_STATUS Status;
+ PEI_PCD_DATABASE *DataBase;
+
+ DataBase = BuildPcdDatabase (FileHandle);
//
// Install PCD_PPI and EFI_PEI_PCD_PPI.
//
Status = PeiServicesInstallPpi (&mPpiList[0]);
ASSERT_EFI_ERROR (Status);
-
+
+ //
+ // Only install PcdInfo PPI when the feature is enabled and PCD info content is present.
+ //
+ if (FeaturePcdGet (PcdPcdInfoGeneration) && (DataBase->PcdNameTableOffset != 0)) {
+ //
+ // Install GET_PCD_INFO_PPI and EFI_GET_PCD_INFO_PPI.
+ //
+ Status = PeiServicesInstallPpi (&mPpiList2[0]);
+ 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
+PeiGetPcdInfoGetInfo (
+ IN UINTN TokenNumber,
+ OUT EFI_PCD_INFO *PcdInfo
+ )
+{
+ return PeiGetPcdInfo (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
+PeiGetPcdInfoGetInfoEx (
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ OUT EFI_PCD_INFO *PcdInfo
+ )
+{
+ return PeiGetPcdInfo (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
+PeiGetPcdInfoGetSku (
+ VOID
+ )
+{
+ if (!FeaturePcdGet (PcdPcdInfoGeneration)) {
+ return EFI_UNSUPPORTED;
+ }
+ return GetPcdDatabase()->SystemSkuId;
+}
+
+/**
Sets the SKU value for subsequent calls to set or get PCD token values.
SetSku() sets the SKU Id to be used for subsequent calls to set or get PCD values.
|