Add IntelFsp2Pkg and IntelFsp2WrapperPkg.

[mirror_edk2.git] / IntelFsp2WrapperPkg / Library / SecFspWrapperPlatformSecLibSample / SecPlatformInformation.c

diff --git a/IntelFsp2WrapperPkg/Library/SecFspWrapperPlatformSecLibSample/SecPlatformInformation.c b/IntelFsp2WrapperPkg/Library/SecFspWrapperPlatformSecLibSample/SecPlatformInformation.c
new file mode 100644 (file)
index 0000000..b879080
--- /dev/null
+++ b/IntelFsp2WrapperPkg/Library/SecFspWrapperPlatformSecLibSample/SecPlatformInformation.c
@@ -0,0 +1,84 @@
+/** @file\r
+  Sample to provide SecPlatformInformation function.\r
+\r
+  Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>\r
+  This program and the accompanying materials\r
+  are licensed and made available under the terms and conditions of the BSD License\r
+  which accompanies this distribution.  The full text of the license may be found at\r
+  http://opensource.org/licenses/bsd-license.php.\r
+\r
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <PiPei.h>\r
+\r
+#include <Ppi/SecPlatformInformation.h>\r
+#include <Ppi/TopOfTemporaryRam.h>\r
+\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/DebugLib.h>\r
+\r
+/**\r
+  This interface conveys state information out of the Security (SEC) phase into PEI.\r
+\r
+  @param[in]     PeiServices               Pointer to the PEI Services Table.\r
+  @param[in,out] StructureSize             Pointer to the variable describing size of the input buffer.\r
+  @param[out]    PlatformInformationRecord Pointer to the EFI_SEC_PLATFORM_INFORMATION_RECORD.\r
+\r
+  @retval EFI_SUCCESS           The data was successfully returned.\r
+  @retval EFI_BUFFER_TOO_SMALL  The buffer was too small.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+SecPlatformInformation (\r
+  IN CONST EFI_PEI_SERVICES                     **PeiServices,\r
+  IN OUT   UINT64                               *StructureSize,\r
+     OUT   EFI_SEC_PLATFORM_INFORMATION_RECORD  *PlatformInformationRecord\r
+  )\r
+{\r
+  UINT32      *Bist;\r
+  UINT32      Size;\r
+  UINT32      Count;\r
+  UINT32      TopOfTemporaryRam;\r
+  VOID        *TopOfTemporaryRamPpi;\r
+  EFI_STATUS  Status;\r
+\r
+  DEBUG ((DEBUG_INFO, "SecPlatformInformation\n"));\r
+\r
+  Status = (*PeiServices)->LocatePpi (\r
+                             PeiServices,\r
+                             &gTopOfTemporaryRamPpiGuid,\r
+                             0,\r
+                             NULL,\r
+                             (VOID **) &TopOfTemporaryRamPpi\r
+                             );\r
+  if (EFI_ERROR (Status)) {\r
+    return EFI_NOT_FOUND;\r
+  }\r
+\r
+  //\r
+  // The entries of BIST information, together with the number of them,\r
+  // reside in the bottom of stack, left untouched by normal stack operation.\r
+  // This routine copies the BIST information to the buffer pointed by\r
+  // PlatformInformationRecord for output.\r
+  //\r
+  TopOfTemporaryRam = (UINT32)(UINTN)TopOfTemporaryRamPpi - sizeof (UINT32);\r
+  TopOfTemporaryRam -= sizeof(UINT32) * 2;\r
+  Count             = *((UINT32 *)(UINTN) (TopOfTemporaryRam - sizeof (UINT32)));\r
+  Size              = Count * sizeof (IA32_HANDOFF_STATUS);\r
+\r
+  if ((*StructureSize) < (UINT64) Size) {\r
+    *StructureSize = Size;\r
+    return EFI_BUFFER_TOO_SMALL;\r
+  }\r
+\r
+  *StructureSize  = Size;\r
+  Bist            = (UINT32 *) (TopOfTemporaryRam - sizeof (UINT32) - Size);\r
+\r
+  CopyMem (PlatformInformationRecord, Bist, Size);\r
+\r
+  return EFI_SUCCESS;\r
+}\r