This change generates the reset vector binary which only contains 1G page table. If a platform doesn't support 1G page table, this will cause system hang.
To Ard and Jordan, Can you evaluate whether this change impacts OVMF? To Prince, Can you evaluate whether this change impacts SimicsOpenBoardPkg? Thanks, Ray -----Original Message----- From: S, Ashraf Ali <ashraf.al...@intel.com> Sent: Friday, July 2, 2021 8:25 PM To: devel@edk2.groups.io Cc: S, Ashraf Ali <ashraf.al...@intel.com>; Ni, Ray <ray...@intel.com>; Kumar, Rahul1 <rahul1.ku...@intel.com>; De, Debkumar <debkumar...@intel.com>; Han, Harry <harry....@intel.com>; West, Catharine <catharine.w...@intel.com>; V, Sangeetha <sangeeth...@intel.com> Subject: [PATCH] UefiCpuPkg VTF0 X64: Build page tables using 1-GByte Page Granularity REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3473 X64 Reset Vector Code can access the memory range till 4GB using the Linear-Address Translation to a 2-MByte Page, when user wants to use more than 4G using 2M Page it will leads to use more number of Page table entries. using the 1-GByte Page table user can use more than 4G Memory by reducing the page table entries using 1-GByte Page, this patch attached can access memory range till 512GByte. Build Scrips for Reset Vector currently based on Python 2 which is already EOL, needs to modify the build script based on Python 3, update the Binary accordingly. Cc: Ray Ni <ray...@intel.com> Cc: Rahul Kumar <rahul1.ku...@intel.com> Cc: Debkumar De <debkumar...@intel.com> Cc: Harry Han <harry....@intel.com> Cc: Catharine West <catharine.w...@intel.com> Cc: Sangeetha V <sangeeth...@intel.com> Signed-off-by: Ashraf Ali S <ashraf.al...@intel.com> --- .../Vtf0/Bin/ResetVector.ia32.port80.raw | Bin 516 -> 484 bytes .../ResetVector/Vtf0/Bin/ResetVector.ia32.raw | Bin 484 -> 468 bytes .../Vtf0/Bin/ResetVector.ia32.serial.raw | Bin 884 -> 868 bytes .../Vtf0/Bin/ResetVector.x64.port80.raw | Bin 28676 -> 12292 bytes .../ResetVector/Vtf0/Bin/ResetVector.x64.raw | Bin 28676 -> 12292 bytes .../Vtf0/Bin/ResetVector.x64.serial.raw | Bin 28676 -> 12292 bytes UefiCpuPkg/ResetVector/Vtf0/Build.py | 11 +-- .../ResetVector/Vtf0/Ia32/PageTables64.asm | 2 +- UefiCpuPkg/ResetVector/Vtf0/ReadMe.txt | 2 +- .../Vtf0/Tools/FixupForRawSection.py | 4 +- UefiCpuPkg/ResetVector/Vtf0/Vtf0.nasmb | 4 +- .../ResetVector/Vtf0/X64/1GPageTables.asm | 64 ++++++++++++++++++ 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z9R9?~+uwiX$~`exuAIK*{?j+l>3biz{`4*LZ57d{pMBVR-05eXzPS$%o_hM0e#iO4 z-Zx!yl|1K~Y5VAFw*NPu>jxZ8+LiY1s~6g>m;cwT=R9KT36I!%{N<l{UHrsdZ+qPr zUiqjqr>}eRnR`C$a6KFj?aVu#beNVK<DPuX;Vf^NM}9E3U2{y&zGnLu9^;vN9v64r ze^=i%cRg^|TTWhbn5#=qjXJ!?&o3@lC-CZc=zrnA?0X*e>weB}jn}{MWe<MP>p$^j z58iO*;u}u#y@!kU<R`D3Jo?JXOW%9t%E>M7JAA3bjNX3F;bkBC7rNV@_NLpP_Qu<v j_J-Rp&Xu=6c;CbCb@e@7{+Tb1OP3z}mY;w3OP78Y>oK+# diff --git a/UefiCpuPkg/ResetVector/Vtf0/Build.py b/UefiCpuPkg/ResetVector/Vtf0/Build.py index 343c53b5ff..29f29ff0c2 100644 --- a/UefiCpuPkg/ResetVector/Vtf0/Build.py +++ b/UefiCpuPkg/ResetVector/Vtf0/Build.py @@ -1,7 +1,7 @@ ## @file # Automate the process of building the various reset vector types # -# Copyright (c) 2009, Intel Corporation. All rights reserved.<BR> +# Copyright (c) 2009 - 2021, Intel Corporation. All rights +reserved.<BR> # # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -32,16 +32,19 @@ for arch in ('ia32', 'x64'): '-o', output, 'Vtf0.nasmb', ) + print(f"Command : {' '.join(commandLine)}") ret = RunCommand(commandLine) - print '\tASM\t' + output - if ret != 0: sys.exit(ret) + if ret != 0: + print(f"something went wrong while executing the {commandLine[-1]}") + sys.exit() + print('\tASM\t' + output) commandLine = ( 'python', 'Tools/FixupForRawSection.py', output, ) - print '\tFIXUP\t' + output + print('\tFIXUP\t' + output) ret = RunCommand(commandLine) if ret != 0: sys.exit(ret) diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm index 87a4125d4b..9cc6f56c17 100644 --- a/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm +++ b/UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm @@ -15,7 +15,7 @@ BITS 32 SetCr3ForPageTables64: ; - ; These pages are built into the ROM image in X64/PageTables.asm + ; These pages are built into the ROM image in X64/1GPageTables.asm ; mov eax, ADDR_OF(TopLevelPageDirectory) mov cr3, eax diff --git a/UefiCpuPkg/ResetVector/Vtf0/ReadMe.txt b/UefiCpuPkg/ResetVector/Vtf0/ReadMe.txt index e6e5b54243..eb9dd24ee2 100644 --- a/UefiCpuPkg/ResetVector/Vtf0/ReadMe.txt +++ b/UefiCpuPkg/ResetVector/Vtf0/ReadMe.txt @@ -29,7 +29,7 @@ EBP/RBP - Pointer to the start of the Boot Firmware Volume === HOW TO BUILD VTF0 === Dependencies: -* Python 2.5~2.7 +* Python 3.0 or newer * Nasm 2.03 or newer To rebuild the VTF0 binaries: diff --git a/UefiCpuPkg/ResetVector/Vtf0/Tools/FixupForRawSection.py b/UefiCpuPkg/ResetVector/Vtf0/Tools/FixupForRawSection.py index c77438a0ce..de771eba22 100644 --- a/UefiCpuPkg/ResetVector/Vtf0/Tools/FixupForRawSection.py +++ b/UefiCpuPkg/ResetVector/Vtf0/Tools/FixupForRawSection.py @@ -1,7 +1,7 @@ ## @file # Apply fixup to VTF binary image for FFS Raw section # -# Copyright (c) 2008, Intel Corporation. All rights reserved.<BR> +# Copyright (c) 2008 - 2021, Intel Corporation. All rights +reserved.<BR> # # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -15,6 +15,6 @@ c = ((len(d) + 4 + 7) & ~7) - 4 if c > len(d): c -= len(d) f = open(sys.argv[1], 'wb') - f.write('\x90' * c) + f.write(b'\x90' * c) f.write(d) f.close() diff --git a/UefiCpuPkg/ResetVector/Vtf0/Vtf0.nasmb b/UefiCpuPkg/ResetVector/Vtf0/Vtf0.nasmb index 493738c79c..0625efc456 100644 --- a/UefiCpuPkg/ResetVector/Vtf0/Vtf0.nasmb +++ b/UefiCpuPkg/ResetVector/Vtf0/Vtf0.nasmb @@ -2,7 +2,7 @@ ; @file ; This file includes all other code files to assemble the reset vector code ; -; Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR> +; Copyright (c) 2008 - 2021, Intel Corporation. All rights +reserved.<BR> ; SPDX-License-Identifier: BSD-2-Clause-Patent ; ;------------------------------------------------------------------------------ @@ -36,7 +36,7 @@ %include "PostCodes.inc" %ifdef ARCH_X64 -%include "X64/PageTables.asm" +%include "X64/1GPageTables.asm" %endif %ifdef DEBUG_PORT80 diff --git a/UefiCpuPkg/ResetVector/Vtf0/X64/1GPageTables.asm b/UefiCpuPkg/ResetVector/Vtf0/X64/1GPageTables.asm new file mode 100644 index 0000000000..8ae6c4c98c --- /dev/null +++ b/UefiCpuPkg/ResetVector/Vtf0/X64/1GPageTables.asm @@ -0,0 +1,64 @@ +;---------------------------------------------------------------------- +-------- +; @file +; Emits Page Tables for 1:1 mapping of the addresses 0 - 0x8000000000 +(512GB) ; ; Copyright (c) 2021, Intel Corporation. All rights +reserved.<BR> ; SPDX-License-Identifier: BSD-2-Clause-Patent ; +Linear-Address Translation to a 1-GByte Page ; +;---------------------------------------------------------------------- +-------- + +BITS 64 + +%define ALIGN_TOP_TO_4K_FOR_PAGING + +%define PAGE_PRESENT 0x01 +%define PAGE_READ_WRITE 0x02 +%define PAGE_USER_SUPERVISOR 0x04 +%define PAGE_WRITE_THROUGH 0x08 +%define PAGE_CACHE_DISABLE 0x010 +%define PAGE_ACCESSED 0x020 +%define PAGE_DIRTY 0x040 +%define PAGE_PAT 0x080 +%define PAGE_GLOBAL 0x0100 +%define PAGE_1G 0x80 + +%define PAGE_PDP_ATTR (PAGE_ACCESSED + \ + PAGE_READ_WRITE + \ + PAGE_PRESENT) + +%define PAGE_PDP_1G_ATTR (PAGE_ACCESSED + \ + PAGE_READ_WRITE + \ + PAGE_PRESENT + \ + PAGE_1G) + +%define PGTBLS_OFFSET(x) ((x) - TopLevelPageDirectory) %define +PGTBLS_ADDR(x) (ADDR_OF(TopLevelPageDirectory) + (x)) + +%define PDP(offset) (ADDR_OF(TopLevelPageDirectory) + (offset) + \ + PAGE_PDP_ATTR) + +%define PDP_1G(x) ((x << 30) + PAGE_PDP_1G_ATTR) + +ALIGN 16 + +TopLevelPageDirectory: + + ; + ; Top level Page Directory Pointers (1 * 512GB entry) + ; + DQ PDP(0x1000) + + + TIMES 0x1000-PGTBLS_OFFSET($) DB 0 + ; + ; Next level Page Directory Pointers (512 * 1GB entries => 512GB) + ; +%assign i 0 +%rep 512 + DQ PDP_1G(i) + %assign i i+1 +%endrep + + +EndOfPageTables: diff --git a/UefiCpuPkg/ResetVector/Vtf0/X64/PageTables.asm b/UefiCpuPkg/ResetVector/Vtf0/X64/2MPageTables.asm similarity index 100% rename from UefiCpuPkg/ResetVector/Vtf0/X64/PageTables.asm rename to UefiCpuPkg/ResetVector/Vtf0/X64/2MPageTables.asm -- 2.32.0.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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