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//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2010, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/PEI Ram Boot/PeiRamBootDxe.c 12 8/28/15 3:52a Tristinchou $
//
// $Revision: 12 $
//
// $Date: 8/28/15 3:52a $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/PEI Ram Boot/PeiRamBootDxe.c $
//
// 12 8/28/15 3:52a Tristinchou
// [TAG] EIP235157
// [Category] Improvement
// [Description] Security vulnerability - PeiRamBoot: Should leave cold
// boot optimization only
//
// 11 5/05/14 5:03a Calvinchen
// [TAG] EIP166551
// [Category] Spec Update
// [Severity] Important
// [Description] Runtime attribute set for the some of the variable used
// by PEI Ram Boot driver and needs to be reviewed
// [Files] PeiRamBootDxe.c
// PeiRamBootOfbd.c
// PeiRamBoot.chm
// PeiRamBoot.cif
//
// 10 1/16/13 4:54a Calvinchen
// [TAG] EIP108319
// [Category] Bug Fix
// [Severity] Minor
// [Symptom] When we enable PEI RAM BOOT module and set the token
// ¡§PEI_RAM_S3_SUPPOT¡¨ to 0, smbios will not be writable, system will
// hang up when writing smbios under DOS using DMI tool.
// [RootCause] Don't Restore the Base Address of Firmware Volume Block
// Protocol from RAM to ROM.
// [Solution] Restore the Base Address of Firmware Volume Block Protocol
// from RAM to ROM.
// [Files] PeiRamBootDxe.c
//
// 9 8/08/12 4:53a Calvinchen
// 1. Changed for ReportFv2.c by Artem's suggestion.
// 2. Fixed System hangs if Memory Mapping Changed with warm boot.
//
// 8 5/04/12 5:03a Calvinchen
// [TAG] EIP88796
// [Category] Bug Fix
// [Severity] Minor
// [Symptom] (JP0005-Q208)When define more than two FV which has the
// same CUSTOM_SIZE, GetPhysicalAddress() returns invalid value.
// [RootCause] Coding mistake.
// [Solution] (JP0005-Q208)When define more than two FV which has the
// same CUSTOM_SIZE, GetPhysicalAddress() returns invalid value.
// [Files] PeiRamBootDxe.c
// PeiRamBoot.chm
// PeiRamBoot.cif
//
// 7 2/23/12 6:35a Calvinchen
// [TAG] EIP82264
// [Category] Improvement
// [Description] Need to do cold boot to get the correct data in rom
// hole when changing data in rom hole.
// [Files] PeiRamBoot.sdl
// PeiRamBoot.mak
// PeiRamBoot.h
// PeiRamBoot.c
// PeiRamBootDxe.c
// PeiRamBoot.chm
// PeiRamBoot.cif
//
// 6 5/27/11 7:22a Calvinchen
// Delete HobRomImage Variable if Recovery mode.
//
// 5 4/22/11 1:28a Calvinchen
//
// 4 3/22/11 7:52a Calvinchen
// [TAG] EIP56322
// [Category] Bug Fix
// [Severity] Normal
// [Symptom] System hangs after changing TPM settings in SETUP.
// [RootCause] System Memory Mappings are changed with warm boot.
// [Solution] BIOS always go cold boot path if system memory mappings
// are changed
// [Files] PeiRamBoot.sdl
// PeiRamBoot.mak
// PeiRamBoot.dxs
// PeiRamBoot.h
// PeiRamBoot.c
// PeiRamBootHook.c
// PeiRamBootDxe.c
// PeiRamBootOfbd.c
// PeiRamBoot.chm
// PeiRamBoot.cif
//
// 3 12/14/10 2:25a Calvinchen
// Improvement :
// 1. Added an eLink "PeiRamBootList" for fast warm boot support
// (PEI_RAM_BOOT_S3_SUPPORT = 1). If system boots in warm boot state, BIOS
// directly boot to previous copied ROM image in RAM to save time of
// copying ROM.
// 2. Added "PEI_RAM_BOOT_S3_SUPPORT" = "2" for saving runtime memory, it
// only keep necessary PEIM FFS in runtime memory for S3 resume
// improvement.
//
// 2 12/02/10 6:18a Calvinchen
// Bug Fixed : Fixed Update SMBIOS Structures failed with DMI Utility.
//
// 1 10/27/10 2:48a Calvinchen
// Initial Check-in.
//
//
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: PeiRamBootDxe.c
//
// Description: PEI RAM BOOT DXE driver.
//
//<AMI_FHDR_END>
//**********************************************************************
//----------------------------------------------------------------------------
// Includes
// Statements that include other files
#include <AmiDxeLib.h>
#include <AmiCspLib.h>
#include <PeiRamBoot.h>
#include <Protocol\FirmwareVolumeBlock.h>
//----------------------------------------------------------------------------
// Function Externs
//----------------------------------------------------------------------------
// Local prototypes
typedef struct {
UINTN Base;
UINTN Length;
} LBA_CACHE;
typedef struct {
MEMMAP_DEVICE_PATH MemMapDevPath;
EFI_DEVICE_PATH_PROTOCOL EndDevPath;
} FV_DEVICE_PATH;
typedef struct {
UINTN Signature;
EFI_HANDLE Handle;
FV_DEVICE_PATH DevicePath;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL FwVolBlockInstance;
UINTN NumBlocks;
LBA_CACHE *LbaCache;
UINT32 FvbAttributes;
EFI_PHYSICAL_ADDRESS BaseAddress;
} EFI_FW_VOL_BLOCK_DEVICE;
#define FVB_DEVICE_SIGNATURE EFI_SIGNATURE_32('_','F','V','B')
#ifndef _CR
#define _CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field)))
#endif
#ifndef CR
#define CR(Record, TYPE, Field, Signature) _CR (Record, TYPE, Field)
#endif
#ifndef EFI_FVB_MEMORY_MAPPED
#define EFI_FVB_MEMORY_MAPPED EFI_FVB2_MEMORY_MAPPED
#endif
#define FVB_DEVICE_FROM_THIS(a) \
CR(a, EFI_FW_VOL_BLOCK_DEVICE, FwVolBlockInstance, FVB_DEVICE_SIGNATURE)
EFI_GUID gEfiFirmwareVolumeBlockProtocolGuid = FW_VOLUME_BLOCK_PROTOCOL_GUID;
//----------------------------------------------------------------------------
// Local Variables
//----------------------------------------------------------------------------
// Function Definitions
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: DeleteHobRomImageVariable
//
// Description: Delete HobRomImage Variable event.
//
// Input: None.
//
// Output: None.
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
DeleteHobRomImageVariable (
IN EFI_EVENT Event,
IN VOID *ParentImageHandle
)
{
EFI_GUID RomImageAddressGuid = ROM_IMAGE_ADDRESS_GUID;
pRS->SetVariable ( L"HobRomImage",
&RomImageAddressGuid, \
EFI_VARIABLE_NON_VOLATILE | \
EFI_VARIABLE_BOOTSERVICE_ACCESS, \
0, \
ParentImageHandle );
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: PeiRamBootDxeInit
//
// Description: DXE Entry Point for PeiRamBoot Driver.
//
// Input: EFI_HANDLE - ImageHandle
// EFI_SYSTEM_TABLE* - SystemTable
//
// Output: EFI_STATUS
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
PeiRamBootDxeInit (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_GUID GuidHob = HOB_LIST_GUID;
EFI_STATUS Status;
EFI_GUID RomImageHobGuid = ROM_IMAGE_MEMORY_HOB_GUID;
EFI_GUID RomImageAddressGuid = ROM_IMAGE_ADDRESS_GUID;
UINTN VarSize = 0, NumHandles;
UINT8 i, j;
EFI_PHYSICAL_ADDRESS HobRomImageAddress = 0;
VOID *p = NULL;
EFI_HOB_FIRMWARE_VOLUME *FvHob = NULL;
HOB_ROM_IMAGE *HobRomImage;
EFI_HANDLE *HandleBuffer;
EFI_FW_VOL_BLOCK_DEVICE *FvbDevice;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock;
EFI_EVENT EvtSetupChange = NULL;
VOID *RgnSetupChange = NULL;
EFI_GUID AmitseSetupNvramUpdateGuid = \
{0xd84beff0, 0x159a, 0x4b60, 0x9a, 0xb9, 0xac, 0x5c, 0x47, 0x4b, 0xd3, 0xb1};
InitAmiLib(ImageHandle, SystemTable);
// Get RamBoot Informatoin from HOB.
HobRomImage = (HOB_ROM_IMAGE*)GetEfiConfigurationTable (pST, &GuidHob);
Status = FindNextHobByGuid (&RomImageHobGuid, (VOID**)&HobRomImage);
if (EFI_ERROR(Status)) return EFI_UNSUPPORTED;
// Redirect the FV address to RAM and Free memory.
for (p = GetEfiConfigurationTable (pST, &GuidHob);
!(FindNextHobByType(EFI_HOB_TYPE_FV,&p)); ) {
FvHob = (EFI_HOB_FIRMWARE_VOLUME*)p;
for (i = 0; i < HobRomImage->NumOfFv; i++) {
if ((FvHob->BaseAddress == HobRomImage->FvInfo[i].MemAddress) && \
(FvHob->Length == HobRomImage->FvInfo[i].FvLength)) {
FvHob->BaseAddress = HobRomImage->FvInfo[i].FvAddress;
pBS->FreePages (HobRomImage->FvInfo[i].MemAddress, \
HobRomImage->FvInfo[i].NumOfPages);
break;
}
}
}
// Restore the Base Address of Firmware Volume Block Protocol from RAM
// to ROM.
Status = pBS->LocateHandleBuffer ( ByProtocol, \
&gEfiFirmwareVolumeBlockProtocolGuid, \
NULL, \
&NumHandles, \
&HandleBuffer );
if (EFI_ERROR(Status)) return Status;
for (i = 0; i < NumHandles; ++i) {
Status = pBS->HandleProtocol ( HandleBuffer[i], \
&gEfiFirmwareVolumeBlockProtocolGuid, \
&FvBlock );
if (EFI_ERROR(Status)) continue;
FvbDevice = FVB_DEVICE_FROM_THIS (FvBlock);
if (!(FvbDevice->FvbAttributes & EFI_FVB_MEMORY_MAPPED)) continue;
//-TRACE((-1, "FvBaseAddress[%02X] = %08X\n", i, FvbDevice->BaseAddress));
for (j = 0; j < HobRomImage->NumOfFv; j++) {
if ((FvbDevice->BaseAddress == HobRomImage->FvInfo[j].MemAddress) && \
(FvbDevice->NumBlocks == \
(HobRomImage->FvInfo[j].FvLength / FLASH_BLOCK_SIZE))) {
FvbDevice->BaseAddress = HobRomImage->FvInfo[j].FvAddress;
}
}
}
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: PeiRamBootSmmInit
//
// Description: PeiRamBoot InSmm Function.
//
// Input: EFI_HANDLE - ImageHandle
// EFI_SYSTEM_TABLE* - SystemTable
//
// Output: EFI_STATUS
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
PeiRamBootDxeSmmInit (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: PeiRamBootDxeEntry
//
// Description: DXE Entry Point for PeiRamBoot Driver.
//
// Input: EFI_HANDLE - ImageHandle
// EFI_SYSTEM_TABLE* - SystemTable
//
// Output: EFI_STATUS
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
PeiRamBootDxeEntry (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
InitAmiLib(ImageHandle,SystemTable);
return InitSmmHandlerEx(ImageHandle, \
SystemTable, PeiRamBootDxeSmmInit, PeiRamBootDxeInit);
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|