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| author | Michael Kinney <michael.d.kinney@intel.com> | 2015-10-19 19:10:14 +0000 |
|---|---|---|
| committer | mdkinney <mdkinney@Edk2> | 2015-10-19 19:10:14 +0000 |
| commit | 1921695e6461e699ebe12c91254a779ed221b96f (patch) | |
| tree | 87a411c5aee1eac0dfe388c848d3ead43e45abdb /UefiCpuPkg/SecCore/FindPeiCore.c | |
| parent | a39d509761b0b29948e3d4bdef597ca1cbfcf4ee (diff) | |
| download | edk2-1921695e6461e699ebe12c91254a779ed221b96f.tar.gz edk2-1921695e6461e699ebe12c91254a779ed221b96f.tar.bz2 edk2-1921695e6461e699ebe12c91254a779ed221b96f.zip | |
UefiCpuPkg: Add SecCore module
Add SecCore module that uses the PlatformSecLib class for platform
specific actions. The SecCore module also uses a new PCD to
configure the size of the stack used in the SEC phase. If the
stack size PCD is set to 0, the stack is configured to use half
of the available temporary RAM.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18636 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UefiCpuPkg/SecCore/FindPeiCore.c')
| -rw-r--r-- | UefiCpuPkg/SecCore/FindPeiCore.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/UefiCpuPkg/SecCore/FindPeiCore.c b/UefiCpuPkg/SecCore/FindPeiCore.c new file mode 100644 index 0000000000..60ccaa9667 --- /dev/null +++ b/UefiCpuPkg/SecCore/FindPeiCore.c @@ -0,0 +1,198 @@ +/** @file
+ Locate the entry point for the PEI Core
+
+ Copyright (c) 2008 - 2011, 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/BaseLib.h>
+#include <Library/PeCoffGetEntryPointLib.h>
+
+#include "SecMain.h"
+
+/**
+ Find core image base.
+
+ @param BootFirmwareVolumePtr Point to the boot firmware volume.
+ @param SecCoreImageBase The base address of the SEC core image.
+ @param PeiCoreImageBase The base address of the PEI core image.
+
+**/
+EFI_STATUS
+EFIAPI
+FindImageBase (
+ IN EFI_FIRMWARE_VOLUME_HEADER *BootFirmwareVolumePtr,
+ OUT EFI_PHYSICAL_ADDRESS *SecCoreImageBase,
+ OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase
+ )
+{
+ EFI_PHYSICAL_ADDRESS CurrentAddress;
+ EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;
+ EFI_FFS_FILE_HEADER *File;
+ UINT32 Size;
+ EFI_PHYSICAL_ADDRESS EndOfFile;
+ EFI_COMMON_SECTION_HEADER *Section;
+ EFI_PHYSICAL_ADDRESS EndOfSection;
+
+ *SecCoreImageBase = 0;
+ *PeiCoreImageBase = 0;
+
+ CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) BootFirmwareVolumePtr;
+ EndOfFirmwareVolume = CurrentAddress + BootFirmwareVolumePtr->FvLength;
+
+ //
+ // Loop through the FFS files in the Boot Firmware Volume
+ //
+ for (EndOfFile = CurrentAddress + BootFirmwareVolumePtr->HeaderLength; ; ) {
+
+ CurrentAddress = (EndOfFile + 7) & 0xfffffffffffffff8ULL;
+ if (CurrentAddress > EndOfFirmwareVolume) {
+ return EFI_NOT_FOUND;
+ }
+
+ File = (EFI_FFS_FILE_HEADER*)(UINTN) CurrentAddress;
+ if (IS_FFS_FILE2 (File)) {
+ Size = FFS_FILE2_SIZE (File);
+ if (Size <= 0x00FFFFFF) {
+ return EFI_NOT_FOUND;
+ }
+ } else {
+ Size = FFS_FILE_SIZE (File);
+ if (Size < sizeof (EFI_FFS_FILE_HEADER)) {
+ return EFI_NOT_FOUND;
+ }
+ }
+
+ EndOfFile = CurrentAddress + Size;
+ if (EndOfFile > EndOfFirmwareVolume) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // Look for SEC Core / PEI Core files
+ //
+ if (File->Type != EFI_FV_FILETYPE_SECURITY_CORE &&
+ File->Type != EFI_FV_FILETYPE_PEI_CORE) {
+ continue;
+ }
+
+ //
+ // Loop through the FFS file sections within the FFS file
+ //
+ if (IS_FFS_FILE2 (File)) {
+ EndOfSection = (EFI_PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) File + sizeof (EFI_FFS_FILE_HEADER2));
+ } else {
+ EndOfSection = (EFI_PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) File + sizeof (EFI_FFS_FILE_HEADER));
+ }
+ for (;;) {
+ CurrentAddress = (EndOfSection + 3) & 0xfffffffffffffffcULL;
+ Section = (EFI_COMMON_SECTION_HEADER*)(UINTN) CurrentAddress;
+
+ if (IS_SECTION2 (Section)) {
+ Size = SECTION2_SIZE (Section);
+ if (Size <= 0x00FFFFFF) {
+ return EFI_NOT_FOUND;
+ }
+ } else {
+ Size = SECTION_SIZE (Section);
+ if (Size < sizeof (EFI_COMMON_SECTION_HEADER)) {
+ return EFI_NOT_FOUND;
+ }
+ }
+
+ EndOfSection = CurrentAddress + Size;
+ if (EndOfSection > EndOfFile) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // Look for executable sections
+ //
+ if (Section->Type == EFI_SECTION_PE32 || Section->Type == EFI_SECTION_TE) {
+ if (File->Type == EFI_FV_FILETYPE_SECURITY_CORE) {
+ if (IS_SECTION2 (Section)) {
+ *SecCoreImageBase = (PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) Section + sizeof (EFI_COMMON_SECTION_HEADER2));
+ } else {
+ *SecCoreImageBase = (PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) Section + sizeof (EFI_COMMON_SECTION_HEADER));
+ }
+ } else {
+ if (IS_SECTION2 (Section)) {
+ *PeiCoreImageBase = (PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) Section + sizeof (EFI_COMMON_SECTION_HEADER2));
+ } else {
+ *PeiCoreImageBase = (PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) Section + sizeof (EFI_COMMON_SECTION_HEADER));
+ }
+ }
+ break;
+ }
+ }
+
+ //
+ // Both SEC Core and PEI Core images found
+ //
+ if (*SecCoreImageBase != 0 && *PeiCoreImageBase != 0) {
+ return EFI_SUCCESS;
+ }
+ }
+}
+
+/**
+ Find and return Pei Core entry point.
+
+ It also find SEC and PEI Core file debug information. It will report them if
+ remote debug is enabled.
+
+ @param BootFirmwareVolumePtr Point to the boot firmware volume.
+ @param PeiCoreEntryPoint The entry point of the PEI core.
+
+**/
+VOID
+EFIAPI
+FindAndReportEntryPoints (
+ IN EFI_FIRMWARE_VOLUME_HEADER *BootFirmwareVolumePtr,
+ OUT EFI_PEI_CORE_ENTRY_POINT *PeiCoreEntryPoint
+ )
+{
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS SecCoreImageBase;
+ EFI_PHYSICAL_ADDRESS PeiCoreImageBase;
+ PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
+
+ //
+ // Find SEC Core and PEI Core image base
+ //
+ Status = FindImageBase (BootFirmwareVolumePtr, &SecCoreImageBase, &PeiCoreImageBase);
+ ASSERT_EFI_ERROR (Status);
+
+ ZeroMem ((VOID *) &ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT));
+ //
+ // Report SEC Core debug information when remote debug is enabled
+ //
+ ImageContext.ImageAddress = SecCoreImageBase;
+ ImageContext.PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageContext.ImageAddress);
+ PeCoffLoaderRelocateImageExtraAction (&ImageContext);
+
+ //
+ // Report PEI Core debug information when remote debug is enabled
+ //
+ ImageContext.ImageAddress = PeiCoreImageBase;
+ ImageContext.PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageContext.ImageAddress);
+ PeCoffLoaderRelocateImageExtraAction (&ImageContext);
+
+ //
+ // Find PEI Core entry point
+ //
+ Status = PeCoffLoaderGetEntryPoint ((VOID *) (UINTN) PeiCoreImageBase, (VOID**) PeiCoreEntryPoint);
+ if (EFI_ERROR (Status)) {
+ *PeiCoreEntryPoint = 0;
+ }
+
+ return;
+}
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