diff options
Diffstat (limited to 'OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm')
-rw-r--r-- | OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm b/OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm deleted file mode 100644 index a97f9cc70..000000000 --- a/OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm +++ /dev/null @@ -1,46 +0,0 @@ -;------------------------------------------------------------------------------
-; @file
-; Transition from 32 bit flat protected mode into 64 bit flat protected mode
-;
-; Copyright (c) 2008 - 2009, 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
-; http://opensource.org/licenses/bsd-license.php
-;
-; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-;
-;------------------------------------------------------------------------------
-
-BITS 32
-
-;
-; Modified: EAX
-;
-Transition32FlatTo64Flat:
-
- mov eax, ((ADDR_OF_START_OF_RESET_CODE & ~0xfff) - 0x1000)
- mov cr3, eax
-
- mov eax, cr4
- bts eax, 5 ; enable PAE
- mov cr4, eax
-
- mov ecx, 0xc0000080
- rdmsr
- bts eax, 8 ; set LME
- wrmsr
-
- mov eax, cr0
- bts eax, 31 ; set PG
- mov cr0, eax ; enable paging
-
- jmp LINEAR_CODE64_SEL:ADDR_OF(jumpTo64BitAndLandHere)
-BITS 64
-jumpTo64BitAndLandHere:
-
- debugShowPostCode POSTCODE_64BIT_MODE
-
- OneTimeCallRet Transition32FlatTo64Flat
-
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