Adding files from OvmfPkg to common location. This is so multiple packages can use pre-built reset vector code.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9911 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
geekboy15a
46
UefiCpuPkg/ResetVector/Vtf0/Ia32/32FlatTo64Flat.asm
Normal file
46
UefiCpuPkg/ResetVector/Vtf0/Ia32/32FlatTo64Flat.asm
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;------------------------------------------------------------------------------
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; @file
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; Transition from 32 bit flat protected mode into 64 bit flat protected mode
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;
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; Copyright (c) 2008 - 2009, Intel Corporation
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; All rights reserved. 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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;
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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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;------------------------------------------------------------------------------
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BITS 32
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;
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; Modified: EAX
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;
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Transition32FlatTo64Flat:
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mov eax, ((ADDR_OF_START_OF_RESET_CODE & ~0xfff) - 0x1000)
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mov cr3, eax
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mov eax, cr4
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bts eax, 5 ; enable PAE
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mov cr4, eax
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mov ecx, 0xc0000080
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rdmsr
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bts eax, 8 ; set LME
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wrmsr
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mov eax, cr0
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bts eax, 31 ; set PG
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mov cr0, eax ; enable paging
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jmp LINEAR_CODE64_SEL:ADDR_OF(jumpTo64BitAndLandHere)
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BITS 64
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jumpTo64BitAndLandHere:
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debugShowPostCode POSTCODE_64BIT_MODE
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OneTimeCallRet Transition32FlatTo64Flat
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86
UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForBfvBase.asm
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86
UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForBfvBase.asm
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;------------------------------------------------------------------------------
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; @file
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; Search for the Boot Firmware Volume (BFV) base address
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;
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; Copyright (c) 2008 - 2009, Intel Corporation
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; All rights reserved. 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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;
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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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;------------------------------------------------------------------------------
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;#define EFI_FIRMWARE_FILE_SYSTEM2_GUID \
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; { 0x8c8ce578, 0x8a3d, 0x4f1c, { 0x99, 0x35, 0x89, 0x61, 0x85, 0xc3, 0x2d, 0xd3 } }
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%define FFS_GUID_DWORD0 0x8c8ce578
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%define FFS_GUID_DWORD1 0x4f1c8a3d
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%define FFS_GUID_DWORD2 0x61893599
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%define FFS_GUID_DWORD3 0xd32dc385
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BITS 32
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;
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; Modified: EAX, EBX
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; Preserved: EDI, ESP
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;
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; @param[out] EBP Address of Boot Firmware Volume (BFV)
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;
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Flat32SearchForBfvBase:
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xor eax, eax
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searchingForBfvHeaderLoop:
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;
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; We check for a firmware volume at every 4KB address in the top 16MB
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; just below 4GB. (Addresses at 0xffHHH000 where H is any hex digit.)
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;
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sub eax, 0x1000
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cmp eax, 0xff000000
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jb searchedForBfvHeaderButNotFound
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;
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; Check FFS GUID
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;
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cmp dword [eax + 0x10], FFS_GUID_DWORD0
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jne searchingForBfvHeaderLoop
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cmp dword [eax + 0x14], FFS_GUID_DWORD1
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jne searchingForBfvHeaderLoop
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cmp dword [eax + 0x18], FFS_GUID_DWORD2
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jne searchingForBfvHeaderLoop
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cmp dword [eax + 0x1c], FFS_GUID_DWORD3
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jne searchingForBfvHeaderLoop
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;
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; Check FV Length
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;
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cmp dword [eax + 0x24], 0
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jne searchingForBfvHeaderLoop
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mov ebx, eax
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add ebx, dword [eax + 0x20]
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jnz searchingForBfvHeaderLoop
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jmp searchedForBfvHeaderAndItWasFound
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searchedForBfvHeaderButNotFound:
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;
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; Hang if the SEC entry point was not found
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;
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debugShowPostCode POSTCODE_BFV_NOT_FOUND
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;
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; 0xbfbfbfbf in the EAX & EBP registers helps signal what failed
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; for debugging purposes.
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;
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mov eax, 0xBFBFBFBF
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mov ebp, eax
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jmp $
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searchedForBfvHeaderAndItWasFound:
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mov ebp, eax
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debugShowPostCode POSTCODE_BFV_FOUND
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OneTimeCallRet Flat32SearchForBfvBase
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196
UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForSecEntry.asm
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196
UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForSecEntry.asm
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;------------------------------------------------------------------------------
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; @file
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; Search for the SEC Core entry point
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;
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; Copyright (c) 2008 - 2009, Intel Corporation
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; All rights reserved. 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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;
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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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;------------------------------------------------------------------------------
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BITS 32
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%define EFI_FV_FILETYPE_SECURITY_CORE 0x03
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;
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; Modified: EAX, EBX, ECX, EDX
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; Preserved: EDI, EBP, ESP
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;
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; @param[in] EBP Address of Boot Firmware Volume (BFV)
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; @param[out] ESI SEC Core Entry Point Address
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;
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Flat32SearchForSecEntryPoint:
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;
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; Initialize EBP and ESI to 0
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;
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xor ebx, ebx
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mov esi, ebx
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;
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; Pass over the BFV header
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;
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mov eax, ebp
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mov bx, [ebp + 0x30]
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add eax, ebx
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jc secEntryPointWasNotFound
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jmp searchingForFfsFileHeaderLoop
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moveForwardWhileSearchingForFfsFileHeaderLoop:
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;
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; Make forward progress in the search
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;
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inc eax
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jc secEntryPointWasNotFound
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searchingForFfsFileHeaderLoop:
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test eax, eax
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jz secEntryPointWasNotFound
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;
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; Ensure 8 byte alignment
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;
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add eax, 7
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jc secEntryPointWasNotFound
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and al, 0xf8
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;
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; Look to see if there is an FFS file at eax
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;
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mov bl, [eax + 0x17]
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test bl, 0x20
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jz moveForwardWhileSearchingForFfsFileHeaderLoop
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mov ecx, [eax + 0x14]
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and ecx, 0x00ffffff
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or ecx, ecx
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jz moveForwardWhileSearchingForFfsFileHeaderLoop
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add ecx, eax
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jz jumpSinceWeFoundTheLastFfsFile
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jc moveForwardWhileSearchingForFfsFileHeaderLoop
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jumpSinceWeFoundTheLastFfsFile:
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;
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; There seems to be a valid file at eax
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;
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cmp byte [eax + 0x12], EFI_FV_FILETYPE_SECURITY_CORE ; Check File Type
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jne readyToTryFfsFileAtEcx
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fileTypeIsSecCore:
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OneTimeCall GetEntryPointOfFfsFile
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test eax, eax
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jnz doneSeachingForSecEntryPoint
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readyToTryFfsFileAtEcx:
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;
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; Try the next FFS file at ECX
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;
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mov eax, ecx
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jmp searchingForFfsFileHeaderLoop
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secEntryPointWasNotFound:
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xor eax, eax
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doneSeachingForSecEntryPoint:
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mov esi, eax
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test esi, esi
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jnz secCoreEntryPointWasFound
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secCoreEntryPointWasNotFound:
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;
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; Hang if the SEC entry point was not found
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;
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debugShowPostCode POSTCODE_SEC_NOT_FOUND
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jz $
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secCoreEntryPointWasFound:
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debugShowPostCode POSTCODE_SEC_FOUND
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OneTimeCallRet Flat32SearchForSecEntryPoint
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%define EFI_SECTION_PE32 0x10
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;
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; Input:
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; EAX - Start of FFS file
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; ECX - End of FFS file
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;
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; Output:
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; EAX - Entry point of PE32 (or 0 if not found)
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;
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; Modified:
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; EBX
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;
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GetEntryPointOfFfsFile:
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test eax, eax
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jz getEntryPointOfFfsFileErrorReturn
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add eax, 0x18 ; EAX = Start of section
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getEntryPointOfFfsFileLoopForSections:
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cmp eax, ecx
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jae getEntryPointOfFfsFileErrorReturn
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cmp byte [eax + 3], EFI_SECTION_PE32
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je getEntryPointOfFfsFileFoundPe32Section
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;
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; The section type was not PE32, so move to next section
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;
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mov ebx, dword [eax]
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and ebx, 0x00ffffff
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add eax, ebx
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jc getEntryPointOfFfsFileErrorReturn
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;
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; Ensure that FFS section is 32-bit aligned
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;
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add eax, 3
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jc getEntryPointOfFfsFileErrorReturn
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and al, 0xfc
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jmp getEntryPointOfFfsFileLoopForSections
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getEntryPointOfFfsFileFoundPe32Section:
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add eax, 4 ; EAX = Start of PE32 image
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mov ebx, eax
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cmp word [eax], 'MZ'
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jne thereIsNotAnMzSignature
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movzx ebx, word [eax + 0x3c]
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add ebx, eax
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thereIsNotAnMzSignature:
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; if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE)
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cmp word [ebx], 'VZ'
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jne thereIsNoVzSignature
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; *EntryPoint = (VOID *)((UINTN)Pe32Data +
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; (UINTN)(Hdr.Te->AddressOfEntryPoint & 0x0ffffffff) +
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; sizeof(EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize);
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add eax, [ebx + 0x8]
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add eax, 0x28
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movzx ebx, word [ebx + 0x6]
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sub eax, ebx
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jmp getEntryPointOfFfsFileReturn
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thereIsNoVzSignature:
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; if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE)
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cmp dword [ebx], `PE\x00\x00`
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jne getEntryPointOfFfsFileErrorReturn
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; *EntryPoint = (VOID *)((UINTN)Pe32Data +
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; (UINTN)(Hdr.Pe32->OptionalHeader.AddressOfEntryPoint & 0x0ffffffff));
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add eax, [ebx + 0x4 + 0x14 + 0x10]
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jmp getEntryPointOfFfsFileReturn
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getEntryPointOfFfsFileErrorReturn:
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mov eax, 0
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getEntryPointOfFfsFileReturn:
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OneTimeCallRet GetEntryPointOfFfsFile
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Reference in New Issue
Block a user