mirror of https://github.com/acidanthera/audk.git
Rename two files to follow the file naming convention.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10852 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3
parent
111be80fe4
commit
09a90201ee
|
|
@ -1,133 +0,0 @@
|
|||
;------------------------------------------------------------------------------
|
||||
; @file
|
||||
; Transition from 16 bit real mode into 32 bit flat protected mode
|
||||
;
|
||||
; Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
|
||||
; 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.
|
||||
;
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
%define SEC_DEFAULT_CR0 0x40000023
|
||||
%define SEC_DEFAULT_CR4 0x640
|
||||
|
||||
BITS 16
|
||||
|
||||
;
|
||||
; Modified: EAX, EBX
|
||||
;
|
||||
TransitionFromReal16To32BitFlat:
|
||||
|
||||
debugShowPostCode POSTCODE_16BIT_MODE
|
||||
|
||||
cli
|
||||
|
||||
mov bx, 0xf000
|
||||
mov ds, bx
|
||||
|
||||
mov bx, ADDR16_OF(gdtr)
|
||||
|
||||
o32 lgdt [cs:bx]
|
||||
|
||||
mov eax, SEC_DEFAULT_CR0
|
||||
mov cr0, eax
|
||||
|
||||
jmp LINEAR_CODE_SEL:dword ADDR_OF(jumpTo32BitAndLandHere)
|
||||
BITS 32
|
||||
jumpTo32BitAndLandHere:
|
||||
|
||||
mov eax, SEC_DEFAULT_CR4
|
||||
mov cr4, eax
|
||||
|
||||
debugShowPostCode POSTCODE_32BIT_MODE
|
||||
|
||||
mov ax, LINEAR_SEL
|
||||
mov ds, ax
|
||||
mov es, ax
|
||||
mov fs, ax
|
||||
mov gs, ax
|
||||
mov ss, ax
|
||||
|
||||
OneTimeCallRet TransitionFromReal16To32BitFlat
|
||||
|
||||
ALIGN 2
|
||||
|
||||
gdtr:
|
||||
dw GDT_END - GDT_BASE - 1 ; GDT limit
|
||||
dd ADDR_OF(GDT_BASE)
|
||||
|
||||
ALIGN 16
|
||||
|
||||
;
|
||||
; Macros for GDT entries
|
||||
;
|
||||
|
||||
%define PRESENT_FLAG(p) (p << 7)
|
||||
%define DPL(dpl) (dpl << 5)
|
||||
%define SYSTEM_FLAG(s) (s << 4)
|
||||
%define DESC_TYPE(t) (t)
|
||||
|
||||
; Type: data, expand-up, writable, accessed
|
||||
%define DATA32_TYPE 3
|
||||
|
||||
; Type: execute, readable, expand-up, accessed
|
||||
%define CODE32_TYPE 0xb
|
||||
|
||||
; Type: execute, readable, expand-up, accessed
|
||||
%define CODE64_TYPE 0xb
|
||||
|
||||
%define GRANULARITY_FLAG(g) (g << 7)
|
||||
%define DEFAULT_SIZE32(d) (d << 6)
|
||||
%define CODE64_FLAG(l) (l << 5)
|
||||
%define UPPER_LIMIT(l) (l)
|
||||
|
||||
;
|
||||
; The Global Descriptor Table (GDT)
|
||||
;
|
||||
|
||||
GDT_BASE:
|
||||
; null descriptor
|
||||
NULL_SEL equ $-GDT_BASE
|
||||
DW 0 ; limit 15:0
|
||||
DW 0 ; base 15:0
|
||||
DB 0 ; base 23:16
|
||||
DB 0 ; sys flag, dpl, type
|
||||
DB 0 ; limit 19:16, flags
|
||||
DB 0 ; base 31:24
|
||||
|
||||
; linear data segment descriptor
|
||||
LINEAR_SEL equ $-GDT_BASE
|
||||
DW 0xffff ; limit 15:0
|
||||
DW 0 ; base 15:0
|
||||
DB 0 ; base 23:16
|
||||
DB PRESENT_FLAG(1)|DPL(0)|SYSTEM_FLAG(1)|DESC_TYPE(DATA32_TYPE)
|
||||
DB GRANULARITY_FLAG(1)|DEFAULT_SIZE32(1)|CODE64_FLAG(0)|UPPER_LIMIT(0xf)
|
||||
DB 0 ; base 31:24
|
||||
|
||||
; linear code segment descriptor
|
||||
LINEAR_CODE_SEL equ $-GDT_BASE
|
||||
DW 0xffff ; limit 15:0
|
||||
DW 0 ; base 15:0
|
||||
DB 0 ; base 23:16
|
||||
DB PRESENT_FLAG(1)|DPL(0)|SYSTEM_FLAG(1)|DESC_TYPE(CODE32_TYPE)
|
||||
DB GRANULARITY_FLAG(1)|DEFAULT_SIZE32(1)|CODE64_FLAG(0)|UPPER_LIMIT(0xf)
|
||||
DB 0 ; base 31:24
|
||||
|
||||
%ifdef ARCH_X64
|
||||
; linear code (64-bit) segment descriptor
|
||||
LINEAR_CODE64_SEL equ $-GDT_BASE
|
||||
DW 0xffff ; limit 15:0
|
||||
DW 0 ; base 15:0
|
||||
DB 0 ; base 23:16
|
||||
DB PRESENT_FLAG(1)|DPL(0)|SYSTEM_FLAG(1)|DESC_TYPE(CODE64_TYPE)
|
||||
DB GRANULARITY_FLAG(1)|DEFAULT_SIZE32(0)|CODE64_FLAG(1)|UPPER_LIMIT(0xf)
|
||||
DB 0 ; base 31:24
|
||||
%endif
|
||||
|
||||
GDT_END:
|
||||
|
||||
|
|
@ -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.<BR>
|
||||
; 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
|
||||
|
||||
Loading…
Reference in New Issue