diff options
| author | Guo Mang <mang.guo@intel.com> | 2016-06-02 11:01:55 +0800 |
|---|---|---|
| committer | Hao Wu <hao.a.wu@intel.com> | 2016-06-07 09:56:49 +0800 |
| commit | 18c0e668087a51a1e15ab8a661a36c54685997af (patch) | |
| tree | a74be33de69796d0f4df0b7115270ddb6843a8b8 /BraswellPlatformPkg/Override/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c | |
| parent | c6521912d613f6fdf042edf9008359b9376f6c09 (diff) | |
| download | edk2-platforms-18c0e668087a51a1e15ab8a661a36c54685997af.tar.xz | |
BraswellPlatformPkg: Add Override/IntelFspWrapperPkg
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'BraswellPlatformPkg/Override/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c')
| -rw-r--r-- | BraswellPlatformPkg/Override/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/BraswellPlatformPkg/Override/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c b/BraswellPlatformPkg/Override/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c new file mode 100644 index 0000000000..ebf3d12ddc --- /dev/null +++ b/BraswellPlatformPkg/Override/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c @@ -0,0 +1,83 @@ +/** @file
+ Sample to provide SecPlatformInformation function.
+
+ Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <PiPei.h>
+#include <Ppi/SecPlatformInformation.h>
+#include <Ppi/TopOfTemporaryRam.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+
+/**
+ This interface conveys state information out of the Security (SEC) phase into PEI.
+
+ @param[in] PeiServices Pointer to the PEI Services Table.
+ @param[in,out] StructureSize Pointer to the variable describing size of the input buffer.
+ @param[out] PlatformInformationRecord Pointer to the EFI_SEC_PLATFORM_INFORMATION_RECORD.
+
+ @retval EFI_SUCCESS The data was successfully returned.
+ @retval EFI_BUFFER_TOO_SMALL The buffer was too small.
+
+**/
+EFI_STATUS
+EFIAPI
+SecPlatformInformation (
+ IN CONST EFI_PEI_SERVICES **PeiServices,
+ IN OUT UINT64 *StructureSize,
+ OUT EFI_SEC_PLATFORM_INFORMATION_RECORD *PlatformInformationRecord
+ )
+{
+ UINT32 *Bist;
+ UINT32 Size;
+ UINT32 Count;
+ UINT32 TopOfTemporaryRam;
+ VOID *TopOfTemporaryRamPpi;
+ EFI_STATUS Status;
+
+ DEBUG ((DEBUG_INFO, "SecPlatformInformation\n"));
+
+ Status = (*PeiServices)->LocatePpi (
+ PeiServices,
+ &gTopOfTemporaryRamPpiGuid,
+ 0,
+ NULL,
+ (VOID **) &TopOfTemporaryRamPpi
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // The entries of BIST information, together with the number of them,
+ // reside in the bottom of stack, left untouched by normal stack operation.
+ // This routine copies the BIST information to the buffer pointed by
+ // PlatformInformationRecord for output.
+ //
+ TopOfTemporaryRam = (UINT32)(UINTN)TopOfTemporaryRamPpi - sizeof (UINT32);
+ TopOfTemporaryRam -= sizeof(UINT32) * 2;
+ Count = *((UINT32 *)(UINTN) (TopOfTemporaryRam - sizeof (UINT32)));
+ Size = Count * sizeof (IA32_HANDOFF_STATUS);
+
+ if ((*StructureSize) < (UINT64) Size) {
+ *StructureSize = Size;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ *StructureSize = Size;
+ Bist = (UINT32 *) (TopOfTemporaryRam - sizeof (UINT32) - Size);
+
+ CopyMem (PlatformInformationRecord, Bist, Size);
+
+ return EFI_SUCCESS;
+}
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