ec16deeac9
v2:
Per Laszlo and Andrew's comments at
https://lists.01.org/pipermail/edk2-devel/2016-November/004759.html
SecCoreData->StackBase is VOID * type. We should use %p to dump VOID * type.
SecCoreData->StackSize is UINTN type, but %x only could print unsinged-int
type. We will cast it to UINT32 firstly and then use %x to print it.
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
311 lines
9.1 KiB
C
311 lines
9.1 KiB
C
/** @file
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C functions in SEC
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Copyright (c) 2008 - 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "SecMain.h"
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EFI_PEI_TEMPORARY_RAM_DONE_PPI gSecTemporaryRamDonePpi = {
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SecTemporaryRamDone
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};
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EFI_SEC_PLATFORM_INFORMATION_PPI mSecPlatformInformationPpi = { SecPlatformInformation };
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EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformationPpi[] = {
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{
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EFI_PEI_PPI_DESCRIPTOR_PPI,
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&gEfiTemporaryRamDonePpiGuid,
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&gSecTemporaryRamDonePpi
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},
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{
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiSecPlatformInformationPpiGuid,
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&mSecPlatformInformationPpi
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}
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};
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//
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// These are IDT entries pointing to 10:FFFFFFE4h.
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//
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UINT64 mIdtEntryTemplate = 0xffff8e000010ffe4ULL;
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/**
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Caller provided function to be invoked at the end of InitializeDebugAgent().
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Entry point to the C language phase of SEC. After the SEC assembly
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code has initialized some temporary memory and set up the stack,
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the control is transferred to this function.
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@param[in] Context The first input parameter of InitializeDebugAgent().
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**/
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VOID
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NORETURN
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EFIAPI
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SecStartupPhase2(
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IN VOID *Context
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);
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/**
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Entry point to the C language phase of SEC. After the SEC assembly
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code has initialized some temporary memory and set up the stack,
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the control is transferred to this function.
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@param SizeOfRam Size of the temporary memory available for use.
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@param TempRamBase Base address of temporary ram
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@param BootFirmwareVolume Base address of the Boot Firmware Volume.
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**/
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VOID
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EFIAPI
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SecStartup (
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IN UINT32 SizeOfRam,
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IN UINT32 TempRamBase,
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IN VOID *BootFirmwareVolume
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)
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{
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EFI_SEC_PEI_HAND_OFF SecCoreData;
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IA32_DESCRIPTOR IdtDescriptor;
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SEC_IDT_TABLE IdtTableInStack;
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UINT32 Index;
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UINT32 PeiStackSize;
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EFI_STATUS Status;
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//
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// Report Status Code to indicate entering SEC core
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//
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REPORT_STATUS_CODE (
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EFI_PROGRESS_CODE,
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EFI_SOFTWARE_SEC | EFI_SW_SEC_PC_ENTRY_POINT
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);
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PeiStackSize = PcdGet32 (PcdPeiTemporaryRamStackSize);
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if (PeiStackSize == 0) {
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PeiStackSize = (SizeOfRam >> 1);
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}
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ASSERT (PeiStackSize < SizeOfRam);
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//
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// Process all libraries constructor function linked to SecCore.
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//
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ProcessLibraryConstructorList ();
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//
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// Initialize floating point operating environment
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// to be compliant with UEFI spec.
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//
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InitializeFloatingPointUnits ();
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// |-------------------|---->
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// |IDT Table |
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// |-------------------|
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// |PeiService Pointer | PeiStackSize
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// |-------------------|
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// | |
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// | Stack |
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// |-------------------|---->
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// | |
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// | |
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// | Heap | PeiTemporayRamSize
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// | |
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// | |
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// |-------------------|----> TempRamBase
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IdtTableInStack.PeiService = 0;
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for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index ++) {
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CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&mIdtEntryTemplate, sizeof (UINT64));
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}
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IdtDescriptor.Base = (UINTN) &IdtTableInStack.IdtTable;
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IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);
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AsmWriteIdtr (&IdtDescriptor);
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//
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// Setup the default exception handlers
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//
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Status = InitializeCpuExceptionHandlers (NULL);
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ASSERT_EFI_ERROR (Status);
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//
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// Update the base address and length of Pei temporary memory
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//
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SecCoreData.DataSize = (UINT16) sizeof (EFI_SEC_PEI_HAND_OFF);
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SecCoreData.BootFirmwareVolumeBase = BootFirmwareVolume;
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SecCoreData.BootFirmwareVolumeSize = (UINTN)(0x100000000ULL - (UINTN) BootFirmwareVolume);
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SecCoreData.TemporaryRamBase = (VOID*)(UINTN) TempRamBase;
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SecCoreData.TemporaryRamSize = SizeOfRam;
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SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;
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SecCoreData.PeiTemporaryRamSize = SizeOfRam - PeiStackSize;
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SecCoreData.StackBase = (VOID*)(UINTN)(TempRamBase + SecCoreData.PeiTemporaryRamSize);
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SecCoreData.StackSize = PeiStackSize;
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//
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// Initialize Debug Agent to support source level debug in SEC/PEI phases before memory ready.
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//
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InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, &SecCoreData, SecStartupPhase2);
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}
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/**
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Caller provided function to be invoked at the end of InitializeDebugAgent().
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Entry point to the C language phase of SEC. After the SEC assembly
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code has initialized some temporary memory and set up the stack,
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the control is transferred to this function.
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@param[in] Context The first input parameter of InitializeDebugAgent().
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**/
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VOID
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NORETURN
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EFIAPI
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SecStartupPhase2(
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IN VOID *Context
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)
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{
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EFI_SEC_PEI_HAND_OFF *SecCoreData;
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EFI_PEI_PPI_DESCRIPTOR *PpiList;
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UINT32 Index;
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EFI_PEI_PPI_DESCRIPTOR *AllSecPpiList;
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EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint;
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SecCoreData = (EFI_SEC_PEI_HAND_OFF *) Context;
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AllSecPpiList = (EFI_PEI_PPI_DESCRIPTOR *) SecCoreData->PeiTemporaryRamBase;
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//
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// Find Pei Core entry point. It will report SEC and Pei Core debug information if remote debug
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// is enabled.
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//
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FindAndReportEntryPoints ((EFI_FIRMWARE_VOLUME_HEADER *) SecCoreData->BootFirmwareVolumeBase, &PeiCoreEntryPoint);
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if (PeiCoreEntryPoint == NULL)
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{
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CpuDeadLoop ();
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}
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//
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// Perform platform specific initialization before entering PeiCore.
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//
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PpiList = SecPlatformMain (SecCoreData);
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if (PpiList != NULL) {
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//
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// Remove the terminal flag from the terminal PPI
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//
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CopyMem (AllSecPpiList, mPeiSecPlatformInformationPpi, sizeof (mPeiSecPlatformInformationPpi));
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Index = sizeof (mPeiSecPlatformInformationPpi) / sizeof (EFI_PEI_PPI_DESCRIPTOR) - 1;
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AllSecPpiList[Index].Flags = AllSecPpiList[Index].Flags & (~EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST);
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//
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// Append the platform additional PPI list
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//
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Index += 1;
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while (((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) != EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST)) {
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CopyMem (&AllSecPpiList[Index], PpiList, sizeof (EFI_PEI_PPI_DESCRIPTOR));
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Index++;
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PpiList++;
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}
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//
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// Add the terminal PPI
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//
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CopyMem (&AllSecPpiList[Index ++], PpiList, sizeof (EFI_PEI_PPI_DESCRIPTOR));
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//
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// Set PpiList to the total PPI
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//
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PpiList = AllSecPpiList;
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//
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// Adjust PEI TEMP RAM Range.
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//
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ASSERT (SecCoreData->PeiTemporaryRamSize > Index * sizeof (EFI_PEI_PPI_DESCRIPTOR));
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SecCoreData->PeiTemporaryRamBase = (VOID *)((UINTN) SecCoreData->PeiTemporaryRamBase + Index * sizeof (EFI_PEI_PPI_DESCRIPTOR));
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SecCoreData->PeiTemporaryRamSize = SecCoreData->PeiTemporaryRamSize - Index * sizeof (EFI_PEI_PPI_DESCRIPTOR);
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} else {
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//
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// No addition PPI, PpiList directly point to the common PPI list.
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//
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PpiList = &mPeiSecPlatformInformationPpi[0];
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}
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DEBUG ((
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DEBUG_INFO,
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"%a() Stack Base: 0x%p, Stack Size: 0x%x\n",
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__FUNCTION__,
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SecCoreData->StackBase,
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(UINT32) SecCoreData->StackSize
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));
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//
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// Report Status Code to indicate transferring to PEI core
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//
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REPORT_STATUS_CODE (
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EFI_PROGRESS_CODE,
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EFI_SOFTWARE_SEC | EFI_SW_SEC_PC_HANDOFF_TO_NEXT
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);
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//
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// Transfer the control to the PEI core
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//
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ASSERT (PeiCoreEntryPoint != NULL);
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(*PeiCoreEntryPoint) (SecCoreData, PpiList);
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//
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// Should not come here.
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//
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UNREACHABLE ();
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}
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/**
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TemporaryRamDone() disables the use of Temporary RAM. If present, this service is invoked
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by the PEI Foundation after the EFI_PEI_PERMANANT_MEMORY_INSTALLED_PPI is installed.
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@retval EFI_SUCCESS Use of Temporary RAM was disabled.
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@retval EFI_INVALID_PARAMETER Temporary RAM could not be disabled.
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**/
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EFI_STATUS
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EFIAPI
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SecTemporaryRamDone (
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VOID
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)
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{
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BOOLEAN State;
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//
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// Republish Sec Platform Information(2) PPI
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//
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RepublishSecPlatformInformationPpi ();
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//
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// Migrate DebugAgentContext.
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//
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InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);
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//
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// Disable interrupts and save current interrupt state
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//
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State = SaveAndDisableInterrupts();
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//
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// Disable Temporary RAM after Stack and Heap have been migrated at this point.
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//
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SecPlatformDisableTemporaryMemory ();
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//
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// Restore original interrupt state
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//
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SetInterruptState (State);
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return EFI_SUCCESS;
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}
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