[PATCH] UefiCpuPkg VTF0 X64: Build page tables using 1-GByte Page Granularity


Ashraf Ali S
 

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.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Debkumar De <debkumar.de@intel.com>
Cc: Harry Han <harry.han@intel.com>
Cc: Catharine West <catharine.west@intel.com>
Cc: Sangeetha V <sangeetha.v@intel.com>
Signed-off-by: Ashraf Ali S <ashraf.ali.s@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 ++++++++++++++++++
.../X64/{PageTables.asm => 2MPageTables.asm} | 0
13 files changed, 77 insertions(+), 10 deletions(-)
create mode 100644 UefiCpuPkg/ResetVector/Vtf0/X64/1GPageTables.asm
rename UefiCpuPkg/ResetVector/Vtf0/X64/{PageTables.asm => 2MPageTables.asm} (100%)

diff --git a/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.ia32.port80.raw b/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.ia32.port80.raw
index 2c6ff655ded2a5855ca8f4428d559a7727eb6983..79b23c047bdc6e552d77d5c9e9aeae21ff04d91d 100644
GIT binary patch
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diff --git a/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.ia32.raw b/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.ia32.raw
index e34780a3a2c9b22bd10a1d5a405e344faaff94f3..ce7faa502b858e99908bcdb397b776258205e1d5 100644
GIT binary patch
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diff --git a/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.ia32.serial.raw b/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.ia32.serial.raw
index 6dfa68eabb48a44bc50a0b7fe678f80b5cdadfd5..6503a988abdac06f9aa88f0a65f2525e12233b0a 100644
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diff --git a/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.x64.port80.raw b/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.x64.port80.raw
index 6c0bcc47ebff84830b59047790c70d96e9488296..835f8ea423437fdd8b33470ca07b5d09e27ef5bf 100644
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diff --git a/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.x64.raw b/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.x64.raw
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diff --git a/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.x64.serial.raw b/UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.x64.serial.raw
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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

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