mirror of https://review.coreboot.org/STM.git
130 lines
3.0 KiB
NASM
130 lines
3.0 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php.
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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; Module Name:
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;
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; AsmStmInit.asm
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;
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;------------------------------------------------------------------------------
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.CODE
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externdef InitializeSmmMonitor:NEAR
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externdef _ModuleEntryPoint:NEAR
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STM_API_START EQU 00010001h
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STM_API_INITIALIZE_PROTECTION EQU 00010007h
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STM_STACK_SIZE EQU 08000h
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;------------------------------------------------------------------------------
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; VOID
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; AsmInitializeSmmMonitor (
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; VOID
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; )
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_ModuleEntryPoint PROC PUBLIC
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cmp eax, STM_API_INITIALIZE_PROTECTION ; for BSP
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jz GoBsp
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cmp eax, STM_API_START ; for AP
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jz GoAp
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jmp DeadLoop
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GoBsp:
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; Assume ThisOffset is 0
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; ESP is pointer to stack bottom, NOT top
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mov eax, STM_STACK_SIZE ; eax = STM_STACK_SIZE,
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lock xadd [esp], eax ; eax = ThisOffset, ThisOffset += STM_STACK_SIZE (LOCK instruction)
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add eax, STM_STACK_SIZE ; eax = ThisOffset + STM_STACK_SIZE
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add esp, eax ; esp += ThisOffset + STM_STACK_SIZE
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;
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; Jump to C code
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;
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sub rsp, 512
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fxsave [rsp]
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push r15
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push r14
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push r13
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push r12
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push r11
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push r10
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push r9
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push r8
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push rdi
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push rsi
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push rbp
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push rbp ; should be rsp
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push rbx
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push rdx
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push rcx
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mov eax, STM_API_INITIALIZE_PROTECTION
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push rax
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mov rcx, rsp ; parameter
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sub rsp, 20h
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call InitializeSmmMonitor
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add rsp, 20h
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; should never get here
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jmp DeadLoop
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GoAp:
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;
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; assign unique ESP for each processor
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;
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; |------------|<-ESP (PerProc)
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; | Reg |
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; |------------|
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; | Stack |
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; |------------|
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; | ThisOffset |
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; +------------+<-ESP (Common)
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; | Heap |
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; Assume ThisOffset is 0
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; ESP is pointer to stack bottom, NOT top
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mov eax, STM_STACK_SIZE ; eax = STM_STACK_SIZE,
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lock xadd [esp], eax ; eax = ThisOffset, ThisOffset += STM_STACK_SIZE (LOCK instruction)
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add eax, STM_STACK_SIZE ; eax = ThisOffset + STM_STACK_SIZE
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add esp, eax ; esp += ThisOffset + STM_STACK_SIZE
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;
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; Jump to C code
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;
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sub rsp, 512
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fxsave [rsp]
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push r15
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push r14
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push r13
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push r12
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push r11
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push r10
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push r9
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push r8
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push rdi
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push rsi
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push rbp
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push rbp ; should be rsp
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push rbx
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push rdx
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push rcx
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mov eax, STM_API_START
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push rax
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mov rcx, rsp ; parameter
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sub rsp, 20h
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call InitializeSmmMonitor
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add rsp, 20h
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; should never get here
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DeadLoop:
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jmp $
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_ModuleEntryPoint ENDP
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END
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