diff options
Diffstat (limited to 'UefiCpuPkg')
| -rw-r--r-- | UefiCpuPkg/ResetVector/Vtf0/Ia16/16RealTo32Flat.asm | 133 | ||||
| -rw-r--r-- | UefiCpuPkg/ResetVector/Vtf0/Ia32/32FlatTo64Flat.asm | 46 |
2 files changed, 0 insertions, 179 deletions
diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia16/16RealTo32Flat.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia16/16RealTo32Flat.asm deleted file mode 100644 index 146df600a6..0000000000 --- a/UefiCpuPkg/ResetVector/Vtf0/Ia16/16RealTo32Flat.asm +++ /dev/null @@ -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:
-
diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia32/32FlatTo64Flat.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia32/32FlatTo64Flat.asm deleted file mode 100644 index 9eba864c28..0000000000 --- a/UefiCpuPkg/ResetVector/Vtf0/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.<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
-
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