mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-12 14:36:56 +01:00
154 lines
4.5 KiB
NASM
154 lines
4.5 KiB
NASM
;------------------------------------------------------------------------------ ;
|
|
; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
|
|
; SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
;
|
|
; Module Name:
|
|
;
|
|
; MpFuncs.nasm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; This is the assembly code for Multi-processor S3 support
|
|
;
|
|
;-------------------------------------------------------------------------------
|
|
|
|
SECTION .text
|
|
|
|
extern ASM_PFX(InitializeFloatingPointUnits)
|
|
|
|
%define VacantFlag 0x0
|
|
%define NotVacantFlag 0xff
|
|
|
|
%define LockLocation RendezvousFunnelProcEnd - RendezvousFunnelProcStart
|
|
%define StackStart LockLocation + 0x4
|
|
%define StackSize LockLocation + 0x8
|
|
%define RendezvousProc LockLocation + 0xC
|
|
%define GdtrProfile LockLocation + 0x10
|
|
%define IdtrProfile LockLocation + 0x16
|
|
%define BufferStart LockLocation + 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);
|
|
|
|
BITS 16
|
|
global ASM_PFX(RendezvousFunnelProc)
|
|
ASM_PFX(RendezvousFunnelProc):
|
|
RendezvousFunnelProcStart:
|
|
|
|
; At this point CS = 0x(vv00) and ip= 0x0.
|
|
|
|
mov ax, cs
|
|
mov ds, ax
|
|
mov es, ax
|
|
mov ss, ax
|
|
xor ax, ax
|
|
mov fs, ax
|
|
mov gs, ax
|
|
|
|
flat32Start:
|
|
|
|
mov si, BufferStart
|
|
mov edx,dword [si] ; EDX is keeping the start address of wakeup buffer
|
|
|
|
mov si, GdtrProfile
|
|
o32 lgdt [cs:si]
|
|
|
|
mov si, IdtrProfile
|
|
o32 lidt [cs:si]
|
|
|
|
xor ax, ax
|
|
mov ds, ax
|
|
|
|
mov eax, cr0 ; Get control register 0
|
|
or eax, 0x000000001 ; Set PE bit (bit #0)
|
|
mov cr0, eax
|
|
|
|
FLAT32_JUMP:
|
|
|
|
a32 jmp dword 0x20:0x0
|
|
|
|
BITS 32
|
|
PMODE_ENTRY: ; protected mode entry point
|
|
|
|
mov ax, 0x8
|
|
o16 mov ds, ax
|
|
o16 mov es, ax
|
|
o16 mov fs, ax
|
|
o16 mov gs, ax
|
|
o16 mov ss, ax ; Flat mode setup.
|
|
|
|
mov esi, edx
|
|
|
|
mov edi, esi
|
|
add edi, LockLocation
|
|
mov al, NotVacantFlag
|
|
TestLock:
|
|
xchg byte [edi], al
|
|
cmp al, NotVacantFlag
|
|
jz TestLock
|
|
|
|
ProgramStack:
|
|
|
|
mov edi, esi
|
|
add edi, StackSize
|
|
mov eax, dword [edi]
|
|
mov edi, esi
|
|
add edi, StackStart
|
|
add eax, dword [edi]
|
|
mov esp, eax
|
|
mov dword [edi], eax
|
|
|
|
Releaselock:
|
|
|
|
mov al, VacantFlag
|
|
mov edi, esi
|
|
add edi, LockLocation
|
|
xchg byte [edi], al
|
|
|
|
;
|
|
; Call assembly function to initialize FPU.
|
|
;
|
|
mov ebx, ASM_PFX(InitializeFloatingPointUnits)
|
|
call ebx
|
|
;
|
|
; Call C Function
|
|
;
|
|
mov edi, esi
|
|
add edi, RendezvousProc
|
|
mov eax, dword [edi]
|
|
|
|
test eax, eax
|
|
jz GoToSleep
|
|
call eax ; Call C function
|
|
|
|
GoToSleep:
|
|
cli
|
|
hlt
|
|
jmp $-2
|
|
|
|
RendezvousFunnelProcEnd:
|
|
;-------------------------------------------------------------------------------------
|
|
; AsmGetAddressMap (&AddressMap);
|
|
;-------------------------------------------------------------------------------------
|
|
global ASM_PFX(AsmGetAddressMap)
|
|
ASM_PFX(AsmGetAddressMap):
|
|
|
|
pushad
|
|
mov ebp,esp
|
|
|
|
mov ebx, dword [ebp+0x24]
|
|
mov dword [ebx], RendezvousFunnelProcStart
|
|
mov dword [ebx+0x4], PMODE_ENTRY - RendezvousFunnelProcStart
|
|
mov dword [ebx+0x8], FLAT32_JUMP - RendezvousFunnelProcStart
|
|
mov dword [ebx+0xc], RendezvousFunnelProcEnd - RendezvousFunnelProcStart
|
|
|
|
popad
|
|
ret
|
|
|