+++ /dev/null
-/** @file\r
- C functions in SEC\r
-\r
-Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-\r
-#include "SecMain.h"\r
-\r
-EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI gSecTemporaryRamSupportPpi = {\r
- SecTemporaryRamSupport\r
-};\r
-\r
-EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformationPpi[] = {\r
- {\r
- (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
- &gEfiTemporaryRamSupportPpiGuid,\r
- &gSecTemporaryRamSupportPpi\r
- }\r
-};\r
-\r
-//\r
-// These are IDT entries pointing to 10:FFFFFFE4h.\r
-//\r
-UINT64 mIdtEntryTemplate = 0xffff8e000010ffe4ULL;\r
-\r
-/**\r
- Caller provided function to be invoked at the end of InitializeDebugAgent().\r
-\r
- Entry point to the C language phase of SEC. After the SEC assembly\r
- code has initialized some temporary memory and set up the stack,\r
- the control is transferred to this function.\r
-\r
- @param[in] Context The first input parameter of InitializeDebugAgent().\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SecStartupPhase2(\r
- IN VOID *Context\r
- );\r
-\r
-\r
-/**\r
-\r
- Entry point to the C language phase of SEC. After the SEC assembly\r
- code has initialized some temporary memory and set up the stack,\r
- the control is transferred to this function.\r
-\r
-\r
- @param SizeOfRam Size of the temporary memory available for use.\r
- @param TempRamBase Base address of temporary ram\r
- @param BootFirmwareVolume Base address of the Boot Firmware Volume.\r
-**/\r
-VOID\r
-EFIAPI\r
-SecStartup (\r
- IN UINT32 SizeOfRam,\r
- IN UINT32 TempRamBase,\r
- IN VOID *BootFirmwareVolume\r
- )\r
-{\r
- EFI_SEC_PEI_HAND_OFF SecCoreData;\r
- IA32_DESCRIPTOR IdtDescriptor;\r
- SEC_IDT_TABLE IdtTableInStack;\r
- UINT32 Index;\r
- UINT32 PeiStackSize;\r
-\r
- PeiStackSize = (SizeOfRam >> 1);\r
-\r
- ASSERT (PeiStackSize < SizeOfRam);\r
-\r
- //\r
- // Process all libraries constructor function linked to SecCore.\r
- //\r
- ProcessLibraryConstructorList ();\r
-\r
- //\r
- // Initialize floating point operating environment\r
- // to be compliant with UEFI spec.\r
- //\r
- InitializeFloatingPointUnits ();\r
-\r
-\r
- // |-------------------|---->\r
- // |Idt Table |\r
- // |-------------------|\r
- // |PeiService Pointer | PeiStackSize\r
- // |-------------------|\r
- // | |\r
- // | Stack |\r
- // |-------------------|---->\r
- // | |\r
- // | |\r
- // | Heap | PeiTemporaryRamSize\r
- // | |\r
- // | |\r
- // |-------------------|----> TempRamBase\r
-\r
- IdtTableInStack.PeiService = 0;\r
- for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index ++) {\r
- CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&mIdtEntryTemplate, sizeof (UINT64));\r
- }\r
-\r
- IdtDescriptor.Base = (UINTN) &IdtTableInStack.IdtTable;\r
- IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);\r
-\r
- AsmWriteIdtr (&IdtDescriptor);\r
-\r
- //\r
- // Update the base address and length of Pei temporary memory\r
- //\r
- SecCoreData.DataSize = (UINT16) sizeof (EFI_SEC_PEI_HAND_OFF);\r
- SecCoreData.BootFirmwareVolumeBase = BootFirmwareVolume;\r
- SecCoreData.BootFirmwareVolumeSize = (UINTN)(0x100000000ULL - (UINTN) BootFirmwareVolume);\r
- SecCoreData.TemporaryRamBase = (VOID*)(UINTN) TempRamBase;\r
- SecCoreData.TemporaryRamSize = SizeOfRam;\r
- SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r
- SecCoreData.PeiTemporaryRamSize = SizeOfRam - PeiStackSize;\r
- SecCoreData.StackBase = (VOID*)(UINTN)(TempRamBase + SecCoreData.PeiTemporaryRamSize);\r
- SecCoreData.StackSize = PeiStackSize;\r
-\r
- //\r
- // Initialize Debug Agent to support source level debug in SEC/PEI phases before memory ready.\r
- //\r
- InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, &SecCoreData, SecStartupPhase2);\r
-\r
-}\r
-\r
-/**\r
- Caller provided function to be invoked at the end of InitializeDebugAgent().\r
-\r
- Entry point to the C language phase of SEC. After the SEC assembly\r
- code has initialized some temporary memory and set up the stack,\r
- the control is transferred to this function.\r
-\r
- @param[in] Context The first input parameter of InitializeDebugAgent().\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SecStartupPhase2(\r
- IN VOID *Context\r
- )\r
-{\r
- EFI_SEC_PEI_HAND_OFF *SecCoreData;\r
- EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint;\r
-\r
- SecCoreData = (EFI_SEC_PEI_HAND_OFF *) Context;\r
- //\r
- // Find Pei Core entry point. It will report SEC and Pei Core debug information if remote debug\r
- // is enabled.\r
- //\r
- FindAndReportEntryPoints ((EFI_FIRMWARE_VOLUME_HEADER *) SecCoreData->BootFirmwareVolumeBase, &PeiCoreEntryPoint);\r
- if (PeiCoreEntryPoint == NULL)\r
- {\r
- CpuDeadLoop ();\r
- }\r
-\r
- //\r
- // Transfer the control to the PEI core\r
- //\r
- ASSERT (PeiCoreEntryPoint != NULL);\r
- (*PeiCoreEntryPoint) (SecCoreData, (EFI_PEI_PPI_DESCRIPTOR *)&mPeiSecPlatformInformationPpi);\r
-\r
- //\r
- // Should not come here.\r
- //\r
- return ;\r
-}\r
-\r
-/**\r
- This service of the TEMPORARY_RAM_SUPPORT_PPI that migrates temporary RAM into\r
- permanent memory.\r
-\r
- @param PeiServices Pointer to the PEI Services Table.\r
- @param TemporaryMemoryBase Source Address in temporary memory from which the SEC or PEIM will copy the\r
- Temporary RAM contents.\r
- @param PermanentMemoryBase Destination Address in permanent memory into which the SEC or PEIM will copy the\r
- Temporary RAM contents.\r
- @param CopySize Amount of memory to migrate from temporary to permanent memory.\r
-\r
- @retval EFI_SUCCESS The data was successfully returned.\r
- @retval EFI_INVALID_PARAMETER PermanentMemoryBase + CopySize > TemporaryMemoryBase when\r
- TemporaryMemoryBase > PermanentMemoryBase.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-SecTemporaryRamSupport (\r
- IN CONST EFI_PEI_SERVICES **PeiServices,\r
- IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r
- IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r
- IN UINTN CopySize\r
- )\r
-{\r
- IA32_DESCRIPTOR IdtDescriptor;\r
- VOID* OldHeap;\r
- VOID* NewHeap;\r
- VOID* OldStack;\r
- VOID* NewStack;\r
- DEBUG_AGENT_CONTEXT_POSTMEM_SEC DebugAgentContext;\r
- BOOLEAN OldStatus;\r
- UINTN PeiStackSize;\r
-\r
- PeiStackSize = (CopySize >> 1);\r
-\r
- ASSERT (PeiStackSize < CopySize);\r
-\r
- //\r
- // |-------------------|---->\r
- // | Stack | PeiStackSize\r
- // |-------------------|---->\r
- // | Heap | PeiTemporaryRamSize\r
- // |-------------------|----> TempRamBase\r
- //\r
- // |-------------------|---->\r
- // | Heap | PeiTemporaryRamSize\r
- // |-------------------|---->\r
- // | Stack | PeiStackSize\r
- // |-------------------|----> PermanentMemoryBase\r
- //\r
-\r
- OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r
- NewHeap = (VOID*)((UINTN)PermanentMemoryBase + PeiStackSize);\r
- \r
- OldStack = (VOID*)((UINTN)TemporaryMemoryBase + CopySize - PeiStackSize);\r
- NewStack = (VOID*)(UINTN)PermanentMemoryBase;\r
-\r
- DebugAgentContext.HeapMigrateOffset = (UINTN)NewHeap - (UINTN)OldHeap;\r
- DebugAgentContext.StackMigrateOffset = (UINTN)NewStack - (UINTN)OldStack;\r
- \r
- OldStatus = SaveAndSetDebugTimerInterrupt (FALSE);\r
- //\r
- // Initialize Debug Agent to support source level debug in PEI phase after memory ready.\r
- // It will build HOB and fix up the pointer in IDT table.\r
- //\r
- InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, (VOID *) &DebugAgentContext, NULL);\r
-\r
- //\r
- // Migrate Heap\r
- //\r
- CopyMem (NewHeap, OldHeap, CopySize - PeiStackSize);\r
-\r
- //\r
- // Migrate Stack\r
- //\r
- CopyMem (NewStack, OldStack, PeiStackSize);\r
-\r
-\r
- //\r
- // We need *not* fix the return address because currently,\r
- // The PeiCore is executed in flash.\r
- //\r
-\r
- //\r
- // Rebase IDT table in permanent memory\r
- //\r
- AsmReadIdtr (&IdtDescriptor);\r
- IdtDescriptor.Base = IdtDescriptor.Base - (UINTN)OldStack + (UINTN)NewStack;\r
-\r
- AsmWriteIdtr (&IdtDescriptor);\r
-\r
-\r
- //\r
- // Program MTRR\r
- //\r
-\r
- //\r
- // SecSwitchStack function must be invoked after the memory migration\r
- // immediately, also we need fixup the stack change caused by new call into\r
- // permanent memory.\r
- //\r
- SecSwitchStack (\r
- (UINT32) (UINTN) OldStack,\r
- (UINT32) (UINTN) NewStack\r
- );\r
-\r
- SaveAndSetDebugTimerInterrupt (OldStatus);\r
- \r
- return EFI_SUCCESS;\r
-}\r
-\r
projects / mirror_edk2.git / blobdiff