1 ;------------------------------------------------------------------------------ ;
2 ; Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
3 ; This program and the accompanying materials
4 ; are licensed and made available under the terms and conditions of the BSD License
5 ; which accompanies this distribution. The full text of the license may be found at
6 ; http://opensource.org/licenses/bsd-license.php.
8 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
9 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
17 ; Functions for relocating SMBASE's for all processors
19 ;-------------------------------------------------------------------------------
25 SmmInitHandler PROTO C
27 EXTERNDEF C gSmmCr0:DWORD
28 EXTERNDEF C gSmmCr3:DWORD
29 EXTERNDEF C gSmmCr4:DWORD
30 EXTERNDEF C gcSmmInitTemplate:BYTE
31 EXTERNDEF C gcSmmInitSize:WORD
32 EXTERNDEF C gSmmJmpAddr:QWORD
33 EXTERNDEF C mRebasedFlag:PTR BYTE
34 EXTERNDEF C mSmmRelocationOriginalAddress:DWORD
35 EXTERNDEF C gSmmInitStack:DWORD
36 EXTERNDEF C gcSmiInitGdtr:FWORD
38 PROTECT_MODE_CS EQU 08h
39 PROTECT_MODE_DS EQU 20h
43 gcSmiInitGdtr LABEL FWORD
52 lgdt fword ptr cs:[ebp + (offset gcSmiInitGdtr - SmmStartup)]
58 DB 0bfh, PROTECT_MODE_DS, 0 ; mov di, PROTECT_MODE_DS
60 DB 66h, 0eah ; jmp far [ptr48]
61 gSmmJmpAddr LABEL QWORD
70 DB 0bch ; mov esp, imm32
76 gcSmmInitTemplate LABEL BYTE
81 DB 66h, 81h, 0edh, 00h, 00h, 03h, 00 ; sub ebp, 30000h
82 jmp bp ; jmp ebp actually
85 gcSmmInitSize DW $ - gcSmmInitTemplate
87 SmmRelocationSemaphoreComplete PROC
92 jmp [mSmmRelocationOriginalAddress]
93 SmmRelocationSemaphoreComplete ENDP