Fixed GDT load issue in some cases after a reset. Only CS should be used to access flash prior to entering protected mode.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9839 6f19259b-4bc3-4df7-8a09-765794883524
2010-01-27 22:45:14 +00:00 · 2010-01-27 22:45:14 +00:00 · 28319270fb
parent 6dec88649a
commit 28319270fb
7 changed files with 1 additions and 1 deletions
--- a/OvmfPkg/ResetVector/Bin/ResetVector.ia32.port80.raw
+++ b/OvmfPkg/ResetVector/Bin/ResetVector.ia32.port80.raw
--- a/OvmfPkg/ResetVector/Bin/ResetVector.ia32.raw
+++ b/OvmfPkg/ResetVector/Bin/ResetVector.ia32.raw
--- a/OvmfPkg/ResetVector/Bin/ResetVector.ia32.serial.raw
+++ b/OvmfPkg/ResetVector/Bin/ResetVector.ia32.serial.raw
--- a/OvmfPkg/ResetVector/Bin/ResetVector.x64.port80.raw
+++ b/OvmfPkg/ResetVector/Bin/ResetVector.x64.port80.raw
--- a/OvmfPkg/ResetVector/Bin/ResetVector.x64.raw
+++ b/OvmfPkg/ResetVector/Bin/ResetVector.x64.raw
--- a/OvmfPkg/ResetVector/Bin/ResetVector.x64.serial.raw
+++ b/OvmfPkg/ResetVector/Bin/ResetVector.x64.serial.raw
--- a/OvmfPkg/ResetVector/Ia16/16RealTo32Flat.asm
+++ b/OvmfPkg/ResetVector/Ia16/16RealTo32Flat.asm
@ -32,7 +32,7 @@ TransitionFromReal16To32BitFlat:

    mov     bx, ADDR16_OF(gdtr)

-o32 lgdt    [bx]
+o32 lgdt    [cs:bx]

    mov     eax, SEC_DEFAULT_CR0
    mov     cr0, eax