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#------------------------------------------------------------------------------
#
# Copyright (c) 2009 - 2015, 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.S
#
# Abstract:
#
# Functions for relocating SMBASE's for all processors
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(gSmmCr0)
ASM_GLOBAL ASM_PFX(gSmmCr3)
ASM_GLOBAL ASM_PFX(gSmmCr4)
ASM_GLOBAL ASM_PFX(gcSmmInitTemplate)
ASM_GLOBAL ASM_PFX(gcSmmInitSize)
ASM_GLOBAL ASM_PFX(gSmmJmpAddr)
ASM_GLOBAL ASM_PFX(SmmRelocationSemaphoreComplete)
ASM_GLOBAL ASM_PFX(gSmmInitStack)
ASM_GLOBAL ASM_PFX(gcSmiInitGdtr)
.equ PROTECT_MODE_CS, 0x08
.equ PROTECT_MODE_DS, 0x20
.text
ASM_PFX(gcSmiInitGdtr):
.word 0
.quad 0
SmmStartup:
.byte 0x66,0xb8
ASM_PFX(gSmmCr3): .space 4
movl %eax, %cr3
.byte 0x67,0x66
lgdt %cs:(ASM_PFX(gcSmiInitGdtr) - SmmStartup)(%ebp)
.byte 0x66,0xb8
ASM_PFX(gSmmCr4): .space 4
movl %eax, %cr4
.byte 0x66,0xb8
ASM_PFX(gSmmCr0): .space 4
.byte 0xbf, PROTECT_MODE_DS, 0 # mov di, PROTECT_MODE_DS
movl %eax, %cr0
.byte 0x66,0xea # jmp far [ptr48]
ASM_PFX(gSmmJmpAddr): .long Start32bit
.word PROTECT_MODE_CS
Start32bit:
movl %edi,%ds
movl %edi,%es
movl %edi,%fs
movl %edi,%gs
movl %edi,%ss
.byte 0xbc # mov esp, imm32
ASM_PFX(gSmmInitStack): .space 4
call ASM_PFX(SmmInitHandler)
rsm
ASM_PFX(gcSmmInitTemplate):
_SmmInitTemplate:
.byte 0x66
movl $SmmStartup, %ebp
.byte 0x66, 0x81, 0xed, 0, 0, 3, 0 # sub ebp, 0x30000
jmp *%bp # jmp ebp actually
ASM_PFX(gcSmmInitSize): .word . - ASM_PFX(gcSmmInitTemplate)
ASM_PFX(SmmRelocationSemaphoreComplete):
pushl %eax
movl ASM_PFX(mRebasedFlag), %eax
movb $1, (%eax)
popl %eax
jmp *ASM_PFX(mSmmRelocationOriginalAddress)
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