diff options
Diffstat (limited to 'IntelFspWrapperPkg/FspWrapperSecCore/SecMain.c')
| -rw-r--r-- | IntelFspWrapperPkg/FspWrapperSecCore/SecMain.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/IntelFspWrapperPkg/FspWrapperSecCore/SecMain.c b/IntelFspWrapperPkg/FspWrapperSecCore/SecMain.c new file mode 100644 index 000000000..f441725c6 --- /dev/null +++ b/IntelFspWrapperPkg/FspWrapperSecCore/SecMain.c @@ -0,0 +1,264 @@ +/** @file
+ C functions in SEC
+
+ Copyright (c) 2014, 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 "SecMain.h"
+
+EFI_PEI_PPI_DESCRIPTOR mPeiSecMainPpi[] = {
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
+ &gTopOfTemporaryRamPpiGuid,
+ NULL // To be patched later.
+ },
+};
+
+//
+// These are IDT entries pointing to 10:FFFFFFE4h.
+//
+UINT64 mIdtEntryTemplate = 0xffff8e000010ffe4ULL;
+
+/**
+ Caller provided function to be invoked at the end of InitializeDebugAgent().
+
+ 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[in] Context The first input parameter of InitializeDebugAgent().
+
+**/
+VOID
+EFIAPI
+SecStartupPhase2(
+ IN VOID *Context
+ );
+
+
+/**
+
+ 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[in] SizeOfRam Size of the temporary memory available for use.
+ @param[in] TempRamBase Base address of tempory ram
+ @param[in] BootFirmwareVolume Base address of the Boot Firmware Volume.
+**/
+VOID
+EFIAPI
+SecStartup (
+ IN UINT32 SizeOfRam,
+ IN UINT32 TempRamBase,
+ IN VOID *BootFirmwareVolume
+ )
+{
+ EFI_SEC_PEI_HAND_OFF SecCoreData;
+ IA32_DESCRIPTOR IdtDescriptor;
+ SEC_IDT_TABLE IdtTableInStack;
+ UINT32 Index;
+ UINT32 PeiStackSize;
+
+ PeiStackSize = PcdGet32 (PcdPeiTemporaryRamStackSize);
+ if (PeiStackSize == 0) {
+ PeiStackSize = (SizeOfRam >> 1);
+ }
+
+ ASSERT (PeiStackSize < SizeOfRam);
+
+ //
+ // Process all libraries constructor function linked to SecCore.
+ //
+ ProcessLibraryConstructorList ();
+
+ DEBUG ((DEBUG_INFO, "SecCore - SecStartup\n"));
+
+ //
+ // Initialize floating point operating environment
+ // to be compliant with UEFI spec.
+ //
+ InitializeFloatingPointUnits ();
+
+
+ // |-------------------|---->
+ // |Idt Table |
+ // |-------------------|
+ // |PeiService Pointer | PeiStackSize
+ // |-------------------|
+ // | |
+ // | Stack |
+ // |-------------------|---->
+ // | |
+ // | |
+ // | Heap | PeiTemporayRamSize
+ // | |
+ // | |
+ // |-------------------|----> TempRamBase
+
+ IdtTableInStack.PeiService = 0;
+ for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index ++) {
+ CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&mIdtEntryTemplate, sizeof (UINT64));
+ }
+
+ IdtDescriptor.Base = (UINTN) &IdtTableInStack.IdtTable;
+ IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);
+
+ AsmWriteIdtr (&IdtDescriptor);
+
+ //
+ // Update the base address and length of Pei temporary memory
+ //
+ SecCoreData.DataSize = (UINT16) sizeof (EFI_SEC_PEI_HAND_OFF);
+ SecCoreData.BootFirmwareVolumeBase = BootFirmwareVolume;
+ SecCoreData.BootFirmwareVolumeSize = (UINTN)(SIZE_4GB - (UINTN) BootFirmwareVolume);
+ SecCoreData.TemporaryRamBase = (VOID*)(UINTN) TempRamBase;
+ SecCoreData.TemporaryRamSize = SizeOfRam;
+ SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;
+ SecCoreData.PeiTemporaryRamSize = SizeOfRam - PeiStackSize;
+ SecCoreData.StackBase = (VOID*)(UINTN)(TempRamBase + SecCoreData.PeiTemporaryRamSize);
+ SecCoreData.StackSize = PeiStackSize;
+
+ DEBUG ((DEBUG_INFO, "BootFirmwareVolumeBase - 0x%x\n", SecCoreData.BootFirmwareVolumeBase));
+ DEBUG ((DEBUG_INFO, "BootFirmwareVolumeSize - 0x%x\n", SecCoreData.BootFirmwareVolumeSize));
+ DEBUG ((DEBUG_INFO, "TemporaryRamBase - 0x%x\n", SecCoreData.TemporaryRamBase));
+ DEBUG ((DEBUG_INFO, "TemporaryRamSize - 0x%x\n", SecCoreData.TemporaryRamSize));
+ DEBUG ((DEBUG_INFO, "PeiTemporaryRamBase - 0x%x\n", SecCoreData.PeiTemporaryRamBase));
+ DEBUG ((DEBUG_INFO, "PeiTemporaryRamSize - 0x%x\n", SecCoreData.PeiTemporaryRamSize));
+ DEBUG ((DEBUG_INFO, "StackBase - 0x%x\n", SecCoreData.StackBase));
+ DEBUG ((DEBUG_INFO, "StackSize - 0x%x\n", SecCoreData.StackSize));
+
+ //
+ // Initialize Debug Agent to support source level debug in SEC/PEI phases before memory ready.
+ //
+ InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, &SecCoreData, SecStartupPhase2);
+
+}
+
+/**
+ This API patch the TopOfTemporaryRam value in SecPpiList.
+
+ @param[in,out] SecPpiList PPI list to be patched.
+ @param[in] TopOfTemporaryRam The top of CAR.
+
+**/
+VOID
+PatchTopOfTemporaryRamPpi (
+ IN OUT EFI_PEI_PPI_DESCRIPTOR *SecPpiList,
+ IN VOID *TopOfTemporaryRam
+ )
+{
+ SecPpiList[0].Ppi = TopOfTemporaryRam;
+}
+
+/**
+ Caller provided function to be invoked at the end of InitializeDebugAgent().
+
+ 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[in] Context The first input parameter of InitializeDebugAgent().
+
+**/
+VOID
+EFIAPI
+SecStartupPhase2(
+ IN VOID *Context
+ )
+{
+ EFI_SEC_PEI_HAND_OFF *SecCoreData;
+ EFI_PEI_PPI_DESCRIPTOR *PpiList;
+ UINT32 Index;
+ EFI_PEI_PPI_DESCRIPTOR LocalSecPpiList[sizeof(mPeiSecMainPpi)/sizeof(mPeiSecMainPpi[0])];
+ EFI_PEI_PPI_DESCRIPTOR AllSecPpiList[FixedPcdGet32(PcdSecCoreMaxPpiSupported)];
+ EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint;
+
+ SecCoreData = (EFI_SEC_PEI_HAND_OFF *) Context;
+ //
+ // Find Pei Core entry point. It will report SEC and Pei Core debug information if remote debug
+ // is enabled.
+ //
+ FindAndReportEntryPoints ((EFI_FIRMWARE_VOLUME_HEADER *) SecCoreData->BootFirmwareVolumeBase, &PeiCoreEntryPoint);
+ if (PeiCoreEntryPoint == NULL)
+ {
+ CpuDeadLoop ();
+ }
+
+ CopyMem (LocalSecPpiList, mPeiSecMainPpi, sizeof(mPeiSecMainPpi));
+ PatchTopOfTemporaryRamPpi (LocalSecPpiList, (VOID *)((UINTN)SecCoreData->TemporaryRamBase + SecCoreData->TemporaryRamSize));
+
+ //
+ // Perform platform specific initialization before entering PeiCore.
+ //
+ PpiList = SecPlatformMain (SecCoreData);
+ if (PpiList != NULL) {
+ //
+ // Remove the terminal flag from the terminal Ppi
+ //
+ CopyMem (AllSecPpiList, LocalSecPpiList, sizeof (LocalSecPpiList));
+ for (Index = 0; Index < PcdGet32 (PcdSecCoreMaxPpiSupported); Index ++) {
+ if ((AllSecPpiList[Index].Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) == EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {
+ break;
+ }
+ }
+ AllSecPpiList[Index].Flags = AllSecPpiList[Index].Flags & (~EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST);
+
+ //
+ // Append the platform additional Ppi list
+ //
+ Index += 1;
+ while (Index < PcdGet32 (PcdSecCoreMaxPpiSupported) &&
+ ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) != EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST)) {
+ CopyMem (&AllSecPpiList[Index], PpiList, sizeof (EFI_PEI_PPI_DESCRIPTOR));
+ Index++;
+ PpiList++;
+ }
+
+ //
+ // Check whether the total Ppis exceeds the max supported Ppi.
+ //
+ if (Index >= PcdGet32 (PcdSecCoreMaxPpiSupported)) {
+ //
+ // the total Ppi is larger than the supported Max
+ // PcdSecCoreMaxPpiSupported can be enlarged to solve it.
+ //
+ CpuDeadLoop ();
+ } else {
+ //
+ // Add the terminal Ppi
+ //
+ CopyMem (&AllSecPpiList[Index], PpiList, sizeof (EFI_PEI_PPI_DESCRIPTOR));
+ }
+
+ //
+ // Set PpiList to the total Ppi
+ //
+ PpiList = &AllSecPpiList[0];
+ } else {
+ //
+ // No addition Ppi, PpiList directly point to the common Ppi list.
+ //
+ PpiList = &LocalSecPpiList[0];
+ }
+
+ //
+ // Transfer the control to the PEI core
+ //
+ ASSERT (PeiCoreEntryPoint != NULL);
+ (*PeiCoreEntryPoint) (SecCoreData, PpiList);
+
+ //
+ // Should not come here.
+ //
+ return ;
+}
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