e21e355e2c
https://bugzilla.tianocore.org/show_bug.cgi?id=849 In V2, use "mov rax, strict qword 0" to replace the hard code db. 1. Use lea instruction to get the address instead of mov instruction. 2. Use the dummy address as jmp destination, and add the logic to fix up the address to the absolute address at boot time. 3. On MpFuncs.nasm, use ExchangeInfo to record InitializeFloatingPointUnits. This way is same to MpInitLib. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao <liming.gao@intel.com> Cc: Andrew Fish <afish@apple.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
92 lines
2.6 KiB
NASM
92 lines
2.6 KiB
NASM
;------------------------------------------------------------------------------ ;
|
|
; Copyright (c) 2016 - 2018, 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.
|
|
;
|
|
; Module Name:
|
|
;
|
|
; SmmInit.nasm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; Functions for relocating SMBASE's for all processors
|
|
;
|
|
;-------------------------------------------------------------------------------
|
|
|
|
extern ASM_PFX(SmmInitHandler)
|
|
extern ASM_PFX(mRebasedFlag)
|
|
extern ASM_PFX(mSmmRelocationOriginalAddress)
|
|
|
|
global ASM_PFX(gSmmCr3)
|
|
global ASM_PFX(gSmmCr4)
|
|
global ASM_PFX(gSmmCr0)
|
|
global ASM_PFX(gSmmJmpAddr)
|
|
global ASM_PFX(gSmmInitStack)
|
|
global ASM_PFX(gcSmiInitGdtr)
|
|
global ASM_PFX(gcSmmInitSize)
|
|
global ASM_PFX(gcSmmInitTemplate)
|
|
|
|
%define PROTECT_MODE_CS 0x8
|
|
%define PROTECT_MODE_DS 0x20
|
|
|
|
SECTION .text
|
|
|
|
ASM_PFX(gcSmiInitGdtr):
|
|
DW 0
|
|
DQ 0
|
|
|
|
global ASM_PFX(SmmStartup)
|
|
ASM_PFX(SmmStartup):
|
|
DB 0x66, 0xb8
|
|
ASM_PFX(gSmmCr3): DD 0
|
|
mov cr3, eax
|
|
DB 0x67, 0x66
|
|
lgdt [cs:ebp + (ASM_PFX(gcSmiInitGdtr) - ASM_PFX(SmmStartup))]
|
|
DB 0x66, 0xb8
|
|
ASM_PFX(gSmmCr4): DD 0
|
|
mov cr4, eax
|
|
DB 0x66, 0xb8
|
|
ASM_PFX(gSmmCr0): DD 0
|
|
DB 0xbf, PROTECT_MODE_DS, 0 ; mov di, PROTECT_MODE_DS
|
|
mov cr0, eax
|
|
DB 0x66, 0xea ; jmp far [ptr48]
|
|
ASM_PFX(gSmmJmpAddr):
|
|
DD @32bit
|
|
DW PROTECT_MODE_CS
|
|
@32bit:
|
|
mov ds, edi
|
|
mov es, edi
|
|
mov fs, edi
|
|
mov gs, edi
|
|
mov ss, edi
|
|
DB 0xbc ; mov esp, imm32
|
|
ASM_PFX(gSmmInitStack): DD 0
|
|
call ASM_PFX(SmmInitHandler)
|
|
rsm
|
|
|
|
BITS 16
|
|
ASM_PFX(gcSmmInitTemplate):
|
|
mov ebp, ASM_PFX(SmmStartup)
|
|
sub ebp, 0x30000
|
|
jmp ebp
|
|
|
|
ASM_PFX(gcSmmInitSize): DW $ - ASM_PFX(gcSmmInitTemplate)
|
|
|
|
BITS 32
|
|
global ASM_PFX(SmmRelocationSemaphoreComplete)
|
|
ASM_PFX(SmmRelocationSemaphoreComplete):
|
|
push eax
|
|
mov eax, [ASM_PFX(mRebasedFlag)]
|
|
mov byte [eax], 1
|
|
pop eax
|
|
jmp [ASM_PFX(mSmmRelocationOriginalAddress)]
|
|
|
|
global ASM_PFX(PiSmmCpuSmmInitFixupAddress)
|
|
ASM_PFX(PiSmmCpuSmmInitFixupAddress):
|
|
ret
|