mirror of https://github.com/acidanthera/audk.git
161 lines
5.9 KiB
ArmAsm
161 lines
5.9 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
# IA32 assembly file for AP startup vector.
|
|
#
|
|
# Copyright (c) 2009 - 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.
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
.equ VacantFlag, 0x0
|
|
.equ NotVacantFlag, 0xff
|
|
|
|
.equ LockLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart
|
|
.equ StackStart, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x04
|
|
.equ StackSize, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x08
|
|
.equ RendezvousProc, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x0C
|
|
.equ GdtrProfile, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x10
|
|
.equ IdtrProfile, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x16
|
|
.equ BufferStart, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x1C
|
|
|
|
#-------------------------------------------------------------------------------------
|
|
#RendezvousFunnelProc procedure follows. All APs execute their procedure. This
|
|
#procedure serializes all the AP processors through an Init sequence. It must be
|
|
#noted that APs arrive here very raw...ie: real mode, no stack.
|
|
#ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC
|
|
#IS IN MACHINE CODE.
|
|
#-------------------------------------------------------------------------------------
|
|
#RendezvousFunnelProc (&WakeUpBuffer,MemAddress);
|
|
|
|
ASM_GLOBAL ASM_PFX(RendezvousFunnelProc)
|
|
ASM_PFX(RendezvousFunnelProc):
|
|
RendezvousFunnelProcStart:
|
|
|
|
|
|
# At this point CS = 0x(vv00) and ip= 0x0.
|
|
|
|
.byte 0x8c,0xc8 # mov ax, cs
|
|
.byte 0x8e,0xd8 # mov ds, ax
|
|
.byte 0x8e,0xc0 # mov es, ax
|
|
.byte 0x8e,0xd0 # mov ss, ax
|
|
.byte 0x33,0xc0 # xor ax, ax
|
|
.byte 0x8e,0xe0 # mov fs, ax
|
|
.byte 0x8e,0xe8 # mov gs, ax
|
|
|
|
# Switch to flat mode.
|
|
|
|
.byte 0xBE
|
|
.word BufferStart
|
|
.byte 0x66,0x8B,0xC # mov ecx,dword ptr [si] ; ECX is keeping the start address of wakeup buffer
|
|
|
|
.byte 0xFA # cli
|
|
.byte 0xBE
|
|
.word GdtrProfile
|
|
.byte 0x66 # db 66h
|
|
.byte 0x2E,0xF,0x1,0x14 # lgdt fword ptr cs:[si]
|
|
|
|
.byte 0xBE
|
|
.word IdtrProfile
|
|
.byte 0x66 # db 66h
|
|
.byte 0x2E,0xF,0x1,0x1C # lidt fword ptr cs:[si]
|
|
|
|
.byte 0x33,0xC0 # xor ax, ax
|
|
.byte 0x8E,0xD8 # mov ds, ax
|
|
.byte 0xF,0x20,0xC0 # mov eax, cr0 ; Get control register 0
|
|
.byte 0x66,0x83,0xC8,0x1 # or eax, 000000001h ; Set PE bit (bit #0)
|
|
.byte 0xF,0x22,0xC0 # mov cr0, eax
|
|
|
|
|
|
#step-4:
|
|
|
|
FLAT32_JUMP:
|
|
.byte 0x66
|
|
.byte 0x67
|
|
.byte 0xEA # far jump
|
|
.long 0x0
|
|
.word 0x10
|
|
|
|
ProtectedModeStart: # protected mode entry point
|
|
|
|
movw $0x8,%ax
|
|
.byte 0x66
|
|
movw %ax,%ds
|
|
.byte 0x66
|
|
movw %ax,%es
|
|
.byte 0x66
|
|
movw %ax,%fs
|
|
.byte 0x66
|
|
movw %ax,%gs
|
|
.byte 0x66
|
|
movw %ax,%ss # Flat mode setup.
|
|
|
|
|
|
movl %esi,%edi
|
|
addl $LockLocation, %edi
|
|
movb $NotVacantFlag, %al
|
|
TestLock:
|
|
xchgb (%edi), %al
|
|
cmpb $NotVacantFlag, %al
|
|
jz TestLock
|
|
|
|
ProgramStack:
|
|
movl %esi,%edi
|
|
addl $StackSize, %edi
|
|
movl (%edi), %eax
|
|
movl %esi,%edi
|
|
addl $StackStart, %edi
|
|
addl (%edi), %eax
|
|
movl %eax,%esp
|
|
movl %eax, (%edi)
|
|
|
|
Releaselock:
|
|
movb $VacantFlag, %al
|
|
movl %esi,%edi
|
|
addl $LockLocation, %edi
|
|
xchgb (%edi), %al
|
|
|
|
#
|
|
# Call C Function
|
|
#
|
|
movl %esi,%edi
|
|
addl $RendezvousProc, %edi
|
|
movl (%edi), %ebx
|
|
|
|
testl %ebx,%ebx
|
|
jz GoToSleep
|
|
call *%ebx # Call C function
|
|
|
|
#Step-6: Sleep
|
|
|
|
GoToSleep:
|
|
|
|
cli
|
|
hlt
|
|
jmp GoToSleep
|
|
|
|
RendezvousFunnelProcEnd:
|
|
#-------------------------------------------------------------------------------------
|
|
# AsmGetAddressMap (&AddressMap);
|
|
#-------------------------------------------------------------------------------------
|
|
ASM_GLOBAL ASM_PFX(AsmGetAddressMap)
|
|
ASM_PFX(AsmGetAddressMap):
|
|
|
|
pushal
|
|
movl %esp,%ebp
|
|
|
|
movl 0x24(%ebp), %ebx
|
|
movl $RendezvousFunnelProcStart, (%ebx)
|
|
movl $(ProtectedModeStart - RendezvousFunnelProcStart), 0x4(%ebx)
|
|
movl $(FLAT32_JUMP - RendezvousFunnelProcStart), 0x8(%ebx)
|
|
movl $0, 0x0c(%ebx)
|
|
movl $0, 0x10(%ebx)
|
|
movl $(RendezvousFunnelProcEnd - RendezvousFunnelProcStart), 0x14(%ebx)
|
|
|
|
popal
|
|
ret
|