diff options
Diffstat (limited to 'ReferenceCode/Haswell/CpuS3/Pei/MpFuncs.asm')
| -rw-r--r-- | ReferenceCode/Haswell/CpuS3/Pei/MpFuncs.asm | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/ReferenceCode/Haswell/CpuS3/Pei/MpFuncs.asm b/ReferenceCode/Haswell/CpuS3/Pei/MpFuncs.asm new file mode 100644 index 0000000..80064c2 --- /dev/null +++ b/ReferenceCode/Haswell/CpuS3/Pei/MpFuncs.asm @@ -0,0 +1,196 @@ +; +; This file contains a 'Sample Driver' and is licensed as such +; under the terms of your license agreement with Intel or your +; vendor. This file may be modified by the user, subject to +; the additional terms of the license agreement +; +;------------------------------------------------------------------------------- +; +; Copyright (c) 1999 - 2011 Intel Corporation. All rights reserved +; This software and associated documentation (if any) is furnished +; under a license and may only be used or copied in accordance +; with the terms of the license. Except as permitted by such +; license, no part of this software or documentation may be +; reproduced, stored in a retrieval system, or transmitted in any +; form or by any means without the express written consent of +; Intel Corporation. +; +; +; Module Name: +; +; MpFuncs32.asm +; +; Abstract: +; +; This is the assembly code for MP support +; +;------------------------------------------------------------------------------- + +include MpEqu.inc + +;------------------------------------------------------------------------------------- +;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); + +.686p +.model flat +.code + + +RendezvousFunnelProc PROC PUBLIC +RendezvousFunnelProcStart:: + +;Step-1: Grab a lock. At this point CS = 0x(vv00) and ip= 0x0. + + db 8ch,0c8h ; mov ax,cs + db 8eh,0d8h ; mov ds,ax + db 8eh,0c0h ; mov es,ax + db 8eh,0d0h ; mov ss,ax + db 33h,0c0h ; xor ax,ax + db 8eh,0e0h ; mov fs,ax + db 8eh,0e8h ; mov gs,ax + + db 0BEh ; opcode of mov si, mem16 + dw BufferStartLocation ; mov si, BufferStartLocation + db 66h, 8Bh, 1Ch ; mov ebx,dword ptr [si] + + db 0BFh ; opcode of mov di, mem16 + dw PmodeOffsetLocation ; mov di, PmodeOffsetLocation + db 66h, 8Bh, 05h ; mov eax,dword ptr [di] + db 8Bh, 0F8h ; mov di, ax + db 83h, 0EFh,06h ; sub di, 06h + db 66h, 03h, 0C3h ; add eax, ebx + db 66h, 89h, 05h ; mov dword ptr [di],eax + + db 0BEh ; opcode of mov si, mem16 + dw GdtrLocation ; mov si, GdtrLocation + db 66h ; db 66h + db 2Eh, 0Fh, 01h, 14h ; lgdt fword ptr cs:[si] + + db 33h, 0C0h ; xor ax, ax + db 8Eh, 0D8h ; mov ds, ax + + db 0Fh, 20h, 0C0h ; mov eax, cr0 ;Get control register 0 + db 66h, 83h, 0C8h, 03h ; or eax, 000000003h ;Set PE bit (bit #0) & MP + db 0Fh, 22h, 0C0h ; mov cr0, eax + + db 66h, 67h, 0EAh ; far jump + dd 0h ; 32-bit offset + dw 20h ; 16-bit selector + +NemInit:: ; protected mode entry point + + db 66h, 0B8h, 18h, 00h ; mov ax, 18h + db 66h, 8Eh, 0D8h ; mov ds, ax + db 66h, 8Eh, 0C0h ; mov es, ax + db 66h, 8Eh, 0E0h ; mov fs, ax + db 66h, 8Eh, 0E8h ; mov gs, ax + db 66h, 8Eh, 0D0h ; mov ss, ax ; Flat mode setup. + + mov esi, ebx + + mov edi, esi + add edi, StartStateLocation + mov eax, 1 + mov dword ptr [edi], eax + + mov edi, esi + add edi, LockLocation + mov eax, NotVacantFlag +TestLock:: + xchg dword ptr [edi], eax + cmp eax, NotVacantFlag + jz TestLock + +ProgramStack:: + + mov edi, esi + add edi, StackSizeLocation + mov eax, dword ptr [edi] + mov edi, esi + add edi, StackStartAddressLocation + add eax, dword ptr [edi] + mov esp, eax + mov dword ptr [edi], eax + +Releaselock:: + + mov eax, VacantFlag + mov edi, esi + add edi, LockLocation + xchg dword ptr [edi], eax + +CProcedureInvoke:: + + mov edi, esi + add edi, MtrrValuesAddressLocation + mov eax, dword ptr [edi] + push eax + + mov eax, esi + add eax, LockLocation + push eax + + mov edi, esi + add edi, CProcedureLocation + mov eax, dword ptr [edi] + + call eax + add esp, 8 + + cli + hlt + jmp $-2 + +RendezvousFunnelProc ENDP + +SemaphoreStartAddress PROC C, SemaphoreAddress:PTR DWORD + mov eax, SemaphoreAddress +@@: + cmp dword ptr [eax], 0 + jz @F + + PAUSE32 + jmp @B + +@@: + ret +SemaphoreStartAddress ENDP + +RendezvousFunnelProcEnd:: + + +;------------------------------------------------------------------------------------- +; AsmGetAddressMap (&AddressMap); +;------------------------------------------------------------------------------------- +AsmGetAddressMap PROC near C PUBLIC + + mov eax, RendezvousFunnelProcStart + ret + +AsmGetAddressMap ENDP + +AsmGetPmodeOffset PROC near C PUBLIC + + mov eax, NemInit - RendezvousFunnelProcStart + ret + +AsmGetPmodeOffset ENDP + +AsmGetSemaphoreCheckOffset PROC near C PUBLIC + mov eax, SemaphoreStartAddress - RendezvousFunnelProcStart + ret +AsmGetSemaphoreCheckOffset ENDP + +AsmCliHltLoop PROC near C PUBLIC + cli + hlt + jmp $-2 +AsmCliHltLoop ENDP + +END |