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OVMF VTF0 Reset Vector: Set 'accessed' bit in GDT descriptors 

In some environments, the accessed bit should be set to allow the
global descriptor table (GDT) to reside in unmodifiable flash
memory.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9675 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2010-01-04 16:18:06 +00:00
parent e8d1b8d82e
commit d22d1f535b
7 changed files with 5 additions and 5 deletions
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OvmfPkg/ResetVector/Bin/ResetVector.ia32.port80.raw
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OvmfPkg/ResetVector/Ia16/16RealTo32Flat.asm
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@ -2,7 +2,7 @@
; @file
; Transition from 16 bit real mode into 32 bit flat protected mode
;
; Copyright (c) 2008 - 2009, Intel Corporation
; Copyright (c) 2008 - 2010, Intel Corporation
; All rights reserved. This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
@ -78,7 +78,7 @@ LINEAR_SEL equ $-GDT_BASE
dw 0FFFFh ; limit 0xFFFFF
dw 0 ; base 0
db 0
db 092h ; present, ring 0, data, expand-up, writable
db 093h ; present, ring 0, data, expand-up, writable, accessed
db 0CFh ; page-granular, 32-bit
db 0
@ -87,7 +87,7 @@ LINEAR_CODE_SEL equ $-GDT_BASE
dw 0FFFFh ; limit 0xFFFFF
dw 0 ; base 0
db 0
db 09Ah ; present, ring 0, data, expand-up, writable
db 09Bh ; present, ring 0, data, expand-up, writable, accessed
db 0CFh ; page-granular, 32-bit
db 0
@ -96,7 +96,7 @@ SYS_DATA_SEL equ $-GDT_BASE
dw 0FFFFh ; limit 0xFFFFF
dw 0 ; base 0
db 0
db 092h ; present, ring 0, data, expand-up, writable
db 093h ; present, ring 0, data, expand-up, writable, accessed
db 0CFh ; page-granular, 32-bit
db 0
@ -105,7 +105,7 @@ SYS_CODE_SEL equ $-GDT_BASE
dw 0FFFFh ; limit 0xFFFFF
dw 0 ; base 0
db 0
db 09Ah ; present, ring 0, data, expand-up, writable
db 09Bh ; present, ring 0, data, expand-up, writable, accessed
db 0CFh ; page-granular, 32-bit
db 0