X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;ds=sidebyside;f=IntelFspWrapperPkg%2FLibrary%2FSecPeiFspPlatformSecLibSample%2FSecPlatformInformation.c;fp=IntelFspWrapperPkg%2FLibrary%2FSecPeiFspPlatformSecLibSample%2FSecPlatformInformation.c;h=b879080dfac2bd57390e184d2656c2ec3a8a58ab;hb=a33a2f62218e6e49a25d63474b7fe423d8ee4b71;hp=0000000000000000000000000000000000000000;hpb=34717ef034ed275a15683dafd29cb518af50fff0;p=mirror_edk2.git
diff --git a/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c b/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c
new file mode 100644
index 0000000000..b879080dfa
--- /dev/null
+++ b/IntelFspWrapperPkg/Library/SecPeiFspPlatformSecLibSample/SecPlatformInformation.c
@@ -0,0 +1,84 @@
+/** @file
+ Sample to provide SecPlatformInformation function.
+
+ Copyright (c) 2014, Intel Corporation. All rights reserved.
+ 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
+
+#include
+#include
+
+#include
+#include
+
+/**
+ 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;
+}