diff options
Diffstat (limited to 'Platform/BroxtonPlatformPkg/Common/SampleCode/IntelFsp2WrapperPkg/Library/SecPeiFspPlatformSecLibSample/SaveSecContext.c')
-rw-r--r-- | Platform/BroxtonPlatformPkg/Common/SampleCode/IntelFsp2WrapperPkg/Library/SecPeiFspPlatformSecLibSample/SaveSecContext.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/Platform/BroxtonPlatformPkg/Common/SampleCode/IntelFsp2WrapperPkg/Library/SecPeiFspPlatformSecLibSample/SaveSecContext.c b/Platform/BroxtonPlatformPkg/Common/SampleCode/IntelFsp2WrapperPkg/Library/SecPeiFspPlatformSecLibSample/SaveSecContext.c new file mode 100644 index 0000000000..8458b87aac --- /dev/null +++ b/Platform/BroxtonPlatformPkg/Common/SampleCode/IntelFsp2WrapperPkg/Library/SecPeiFspPlatformSecLibSample/SaveSecContext.c @@ -0,0 +1,115 @@ +/** @file
+ Sample to provide SaveSecContext function.
+
+ Copyright (c) 2014 - 2016, 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 <Library/DebugLib.h>
+
+#include <Ppi/TopOfTemporaryRam.h>
+#include <Ppi/SecPlatformInformation.h>
+
+/**
+ Save BIST value before call FspInit.
+
+ @param[in] Bist BIST value.
+
+**/
+VOID
+AsmSaveBistValue (
+ IN UINT32 Bist
+ );
+
+/**
+ Save Ticker value before call FspInit.
+
+ @param[in] Ticker Ticker value.
+
+**/
+VOID
+AsmSaveTickerValue (
+ IN UINT64 Ticker
+ );
+
+/**
+ Save SEC context before call FspInit.
+
+ @param[in] PeiServices Pointer to PEI Services Table.
+
+**/
+VOID
+EFIAPI
+SaveSecContext (
+ IN CONST EFI_PEI_SERVICES **PeiServices
+ )
+{
+ UINT32 *Bist;
+ UINT64 *Ticker;
+ UINT32 Size;
+ UINT32 Count;
+ UINT32 TopOfTemporaryRam;
+ VOID *TopOfTemporaryRamPpi;
+ EFI_STATUS Status;
+
+ DEBUG ((DEBUG_INFO, "SaveSecContext - 0x%x\n", PeiServices));
+
+ Status = (*PeiServices)->LocatePpi (
+ PeiServices,
+ &gTopOfTemporaryRamPpiGuid,
+ 0,
+ NULL,
+ (VOID **) &TopOfTemporaryRamPpi
+ );
+ if (EFI_ERROR (Status)) {
+ return ;
+ }
+
+ DEBUG ((DEBUG_INFO, "TopOfTemporaryRamPpi - 0x%x\n", TopOfTemporaryRamPpi));
+
+ //
+ // 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
+ // |Number of BSPs|
+ // |--------------|
+ // | BIST |
+ // |--------------|
+ // | .... |
+ // |--------------|
+ // | TSC[63:32] |
+ // |--------------|
+ // | TSC[31:00] |
+ // |--------------|
+ //
+
+ TopOfTemporaryRam = (UINT32) (UINTN) TopOfTemporaryRamPpi - sizeof (UINT32);
+ TopOfTemporaryRam -= sizeof (UINT32) * 2;
+ DEBUG ((DEBUG_INFO, "TopOfTemporaryRam - 0x%x\n", TopOfTemporaryRam));
+ Count = *(UINT32 *) (UINTN) (TopOfTemporaryRam - sizeof (UINT32));
+ DEBUG ((DEBUG_INFO, "Count - 0x%x\n", Count));
+ Size = Count * sizeof (IA32_HANDOFF_STATUS);
+ DEBUG ((DEBUG_INFO, "Size - 0x%x\n", Size));
+
+ Bist = (UINT32 *) (UINTN) (TopOfTemporaryRam - sizeof (UINT32) - Size);
+ DEBUG ((DEBUG_INFO, "Bist - 0x%x\n", *Bist));
+ Ticker = (UINT64 *) (UINTN) (TopOfTemporaryRam - sizeof (UINT32) - Size - sizeof (UINT64));
+ DEBUG ((DEBUG_INFO, "Ticker - 0x%lx\n", *Ticker));
+
+ // Just need record BSP
+ AsmSaveBistValue (*Bist);
+ AsmSaveTickerValue (*Ticker);
+}
+
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