diff options
Diffstat (limited to 'QuarkPlatformPkg/Library/PlatformSecLib/PlatformSecLib.c')
| -rw-r--r-- | QuarkPlatformPkg/Library/PlatformSecLib/PlatformSecLib.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/QuarkPlatformPkg/Library/PlatformSecLib/PlatformSecLib.c b/QuarkPlatformPkg/Library/PlatformSecLib/PlatformSecLib.c new file mode 100644 index 0000000000..f292f9a2ef --- /dev/null +++ b/QuarkPlatformPkg/Library/PlatformSecLib/PlatformSecLib.c @@ -0,0 +1,213 @@ +/** @file
+Platform SEC Library for Quark.
+
+Copyright (c) 2013-2015 Intel Corporation.
+
+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/TemporaryRamSupport.h>
+#include <Library/PcdLib.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/HobLib.h>
+#include <Library/MtrrLib.h>
+
+/**
+
+ Entry point to the C language phase of SEC. After the SEC assembly
+ code has initialized some temporary memory and set up the stack,
+ the control is transferred to this function.
+
+ @param SizeOfRam Size of the temporary memory available for use.
+ @param TempRamBase Base address of temporary ram
+ @param BootFirmwareVolume Base address of the Boot Firmware Volume.
+
+**/
+VOID
+EFIAPI
+SecStartup (
+ IN UINT32 SizeOfRam,
+ IN UINT32 TempRamBase,
+ IN VOID *BootFirmwareVolume
+ );
+
+/**
+ Auto-generated function that calls the library constructors for all of the module's
+ dependent libraries. This function must be called by the SEC Core once a stack has
+ been established.
+
+**/
+VOID
+EFIAPI
+ProcessLibraryConstructorList (
+ VOID
+ );
+
+/**
+
+ Entry point to the C language phase of PlatformSecLib. After the SEC assembly
+ code has initialized some temporary memory and set up the stack, control is
+ transferred to this function.
+
+**/
+VOID
+EFIAPI
+PlatformSecLibStartup (
+ VOID
+ )
+{
+ //
+ // Process all library constructor functions linked to SecCore.
+ // This function must be called before any library functions are called
+ //
+ ProcessLibraryConstructorList ();
+
+ //
+ // Set write back cache attribute for SPI FLASH
+ //
+ MtrrSetMemoryAttribute (
+ PcdGet32 (PcdFlashAreaBaseAddress),
+ PcdGet32 (PcdFlashAreaSize),
+ CacheWriteBack
+ );
+
+ //
+ // Set write back cache attribute for 512KB Embedded SRAM
+ //
+ MtrrSetMemoryAttribute (
+ PcdGet32 (PcdEsramStage1Base),
+ SIZE_512KB,
+ CacheWriteBack
+ );
+
+ //
+ // Pass control to SecCore module passing in the size of the temporary RAM in
+ // Embedded SRAM, the base address of the temporary RAM in Embedded SRAM, and
+ // the base address of the boot firmware volume. The top 32KB of the 512 KB
+ // embedded SRAM are used as temporary RAM.
+ //
+ SecStartup (
+ SIZE_32KB,
+ PcdGet32 (PcdEsramStage1Base) + SIZE_512KB - SIZE_32KB,
+ (VOID *)(UINTN)PcdGet32 (PcdFlashFvRecoveryBase)
+ );
+}
+
+/**
+ A developer supplied function to perform platform specific operations.
+
+ It's a developer supplied function to perform any operations appropriate to a
+ given platform. It's invoked just before passing control to PEI core by SEC
+ core. Platform developer may modify the SecCoreData and PPI list that is
+ passed to PEI Core.
+
+ @param SecCoreData The same parameter as passing to PEI core. It
+ could be overridden by this function.
+ @param PpiList The default PPI list passed from generic SEC
+ part.
+
+ @return The final PPI list that platform wishes to passed to PEI core.
+
+**/
+EFI_PEI_PPI_DESCRIPTOR *
+EFIAPI
+SecPlatformMain (
+ IN OUT EFI_SEC_PEI_HAND_OFF *SecCoreData,
+ IN EFI_PEI_PPI_DESCRIPTOR *PpiList
+ )
+{
+ return NULL;
+}
+
+/**
+ This interface conveys state information out of the Security (SEC) phase into PEI.
+
+ @param PeiServices Pointer to the PEI Services Table.
+ @param StructureSize Pointer to the variable describing size of the input buffer.
+ @param 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;
+ EFI_HOB_GUID_TYPE *GuidHob;
+ UINT32 *TopOfStack;
+
+ //
+ // Top of the stack is the top of the 512KB Embedded SRAM region
+ //
+ TopOfStack = (UINT32 *)(UINTN)(PcdGet32 (PcdEsramStage1Base) + SIZE_512KB);
+
+ GuidHob = GetFirstGuidHob (&gEfiSecPlatformInformationPpiGuid);
+ if (GuidHob != NULL) {
+ Size = GET_GUID_HOB_DATA_SIZE (GuidHob);
+ BIST = GET_GUID_HOB_DATA (GuidHob);
+ } else {
+ //
+ // 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.
+ //
+ Count = *(TopOfStack - 1);
+ Size = Count * sizeof (IA32_HANDOFF_STATUS);
+ BIST = (UINT32 *) ((UINT32) TopOfStack - sizeof (UINT32) - Size);
+
+ //
+ // Copy Data from Stack to Hob to avoid data is lost after memory is ready.
+ //
+ BuildGuidDataHob (
+ &gEfiSecPlatformInformationPpiGuid,
+ BIST,
+ (UINTN)Size
+ );
+ GuidHob = GetFirstGuidHob (&gEfiSecPlatformInformationPpiGuid);
+ Size = GET_GUID_HOB_DATA_SIZE (GuidHob);
+ BIST = GET_GUID_HOB_DATA (GuidHob);
+ }
+
+ if ((*StructureSize) < (UINT64) Size) {
+ *StructureSize = Size;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ *StructureSize = Size;
+ CopyMem (PlatformInformationRecord, BIST, Size);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ This interface disables temporary memory in SEC Phase.
+**/
+VOID
+EFIAPI
+SecPlatformDisableTemporaryMemory (
+ VOID
+ )
+{
+}
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