mirror of https://github.com/acidanthera/audk.git
83 lines
2.4 KiB
ArmAsm
83 lines
2.4 KiB
ArmAsm
## @file
|
|
# This is the assembly code for transferring to control to OS S3 waking vector
|
|
# for X64 platform
|
|
#
|
|
# Copyright (c) 2006, 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.
|
|
#
|
|
##
|
|
|
|
ASM_GLOBAL ASM_PFX(AsmTransferControl)
|
|
ASM_PFX(AsmTransferControl):
|
|
# rcx S3WakingVector :DWORD
|
|
# rdx AcpiLowMemoryBase :DWORD
|
|
lea _AsmTransferControl_al_0000, %eax
|
|
movq $0x2800000000, %r8
|
|
orq %r8, %rax
|
|
pushq %rax
|
|
shrd $20, %ecx, %ebx
|
|
andl $0x0f, %ecx
|
|
movw %cx, %bx
|
|
movl %ebx, jmp_addr
|
|
lret
|
|
_AsmTransferControl_al_0000:
|
|
.byte 0x0b8, 0x30, 0 # mov ax, 30h as selector
|
|
movl %eax, %ds
|
|
movl %eax, %es
|
|
movl %eax, %fs
|
|
movl %eax, %gs
|
|
movl %eax, %ss
|
|
movq %cr0, %rax
|
|
movq %cr4, %rbx
|
|
.byte 0x66
|
|
andl $0x7ffffffe, %eax
|
|
andb $0xdf, %bl
|
|
movq %rax, %cr0
|
|
.byte 0x66
|
|
movl $0x0c0000080, %ecx
|
|
rdmsr
|
|
andb $0xfe, %ah
|
|
wrmsr
|
|
movq %rbx, %cr4
|
|
.byte 0x0ea # jmp far jmp_addr
|
|
jmp_addr:
|
|
.long 0
|
|
|
|
ASM_GLOBAL ASM_PFX(AsmTransferControl32)
|
|
ASM_PFX(AsmTransferControl32):
|
|
# S3WakingVector :DWORD
|
|
# AcpiLowMemoryBase :DWORD
|
|
pushq %rbp
|
|
movl %esp,%ebp
|
|
.byte 0x8d, 0x05 # lea eax, AsmTransferControl16
|
|
ASM_GLOBAL ASM_PFX(AsmFixAddress16)
|
|
ASM_PFX(AsmFixAddress16):
|
|
.long 0
|
|
pushq $0x28 # CS
|
|
pushq %rax
|
|
lret
|
|
|
|
ASM_GLOBAL ASM_PFX(AsmTransferControl16)
|
|
ASM_PFX(AsmTransferControl16):
|
|
.byte 0xb8,0x30,0 # mov ax, 30h as selector
|
|
movw %ax,%ds
|
|
movw %ax,%es
|
|
movw %ax,%fs
|
|
movw %ax,%gs
|
|
movw %ax,%ss
|
|
movq %cr0, %rax # Get control register 0
|
|
.byte 0x66
|
|
.byte 0x83,0xe0,0xfe # and eax, 0fffffffeh ; Clear PE bit (bit #0)
|
|
.byte 0xf,0x22,0xc0 # mov cr0, eax ; Activate real mode
|
|
.byte 0xea # jmp far AsmJmpAddr32
|
|
ASM_GLOBAL ASM_PFX(AsmJmpAddr32)
|
|
ASM_PFX(AsmJmpAddr32):
|
|
.long 0
|