--- /dev/null
+;------------------------------------------------------------------------------ ;\r
+; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+; This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution. The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php.\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+; Module Name:\r
+;\r
+; MpFuncs.asm\r
+;\r
+; Abstract:\r
+;\r
+; This is the assembly code for Multi-processor S3 support\r
+;\r
+;-------------------------------------------------------------------------------\r
+\r
+.686p\r
+.model flat,C\r
+.code\r
+\r
+EXTERN InitializeFloatingPointUnits:PROC\r
+\r
+VacantFlag Equ 00h\r
+NotVacantFlag Equ 0ffh\r
+\r
+LockLocation equ RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
+StackStart equ LockLocation + 4h\r
+StackSize equ LockLocation + 8h\r
+RendezvousProc equ LockLocation + 0Ch\r
+GdtrProfile equ LockLocation + 10h\r
+IdtrProfile equ LockLocation + 16h\r
+BufferStart equ LockLocation + 1Ch\r
+\r
+;-------------------------------------------------------------------------------------\r
+;RendezvousFunnelProc procedure follows. All APs execute their procedure. This\r
+;procedure serializes all the AP processors through an Init sequence. It must be\r
+;noted that APs arrive here very raw...ie: real mode, no stack.\r
+;ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC\r
+;IS IN MACHINE CODE.\r
+;-------------------------------------------------------------------------------------\r
+;RendezvousFunnelProc (&WakeUpBuffer,MemAddress);\r
+\r
+RendezvousFunnelProc PROC near C PUBLIC\r
+RendezvousFunnelProcStart::\r
+\r
+; At this point CS = 0x(vv00) and ip= 0x0.\r
+\r
+ db 8ch, 0c8h ; mov ax, cs\r
+ db 8eh, 0d8h ; mov ds, ax\r
+ db 8eh, 0c0h ; mov es, ax\r
+ db 8eh, 0d0h ; mov ss, ax\r
+ db 33h, 0c0h ; xor ax, ax\r
+ db 8eh, 0e0h ; mov fs, ax\r
+ db 8eh, 0e8h ; mov gs, ax\r
+\r
+flat32Start::\r
+\r
+ db 0BEh\r
+ dw BufferStart ; mov si, BufferStart\r
+ db 66h, 8Bh, 14h ; mov edx,dword ptr [si] ; EDX is keeping the start address of wakeup buffer\r
+\r
+ db 0BEh\r
+ dw GdtrProfile ; mov si, GdtrProfile\r
+ db 66h ; db 66h\r
+ db 2Eh, 0Fh, 01h, 14h ; lgdt fword ptr cs:[si]\r
+\r
+ db 0BEh\r
+ dw IdtrProfile ; mov si, IdtrProfile\r
+ db 66h ; db 66h\r
+ db 2Eh, 0Fh, 01h, 1Ch ; lidt fword ptr cs:[si]\r
+\r
+ db 33h, 0C0h ; xor ax, ax\r
+ db 8Eh, 0D8h ; mov ds, ax\r
+\r
+ db 0Fh, 20h, 0C0h ; mov eax, cr0 ; Get control register 0\r
+ db 66h, 83h, 0C8h, 01h ; or eax, 000000001h ; Set PE bit (bit #0)\r
+ db 0Fh, 22h, 0C0h ; mov cr0, eax\r
+\r
+FLAT32_JUMP::\r
+\r
+ db 66h, 67h, 0EAh ; far jump\r
+ dd 0h ; 32-bit offset\r
+ dw 20h ; 16-bit selector\r
+\r
+PMODE_ENTRY:: ; protected mode entry point\r
+\r
+ mov ax, 8h\r
+ mov ds, ax\r
+ mov es, ax\r
+ mov fs, ax\r
+ mov gs, ax\r
+ mov ss, ax ; Flat mode setup.\r
+\r
+ mov esi, edx\r
+\r
+ mov edi, esi\r
+ add edi, LockLocation\r
+ mov al, NotVacantFlag\r
+TestLock::\r
+ xchg byte ptr [edi], al\r
+ cmp al, NotVacantFlag\r
+ jz TestLock\r
+\r
+ProgramStack::\r
+\r
+ mov edi, esi\r
+ add edi, StackSize\r
+ mov eax, dword ptr [edi]\r
+ mov edi, esi\r
+ add edi, StackStart\r
+ add eax, dword ptr [edi]\r
+ mov esp, eax\r
+ mov dword ptr [edi], eax\r
+\r
+Releaselock::\r
+\r
+ mov al, VacantFlag\r
+ mov edi, esi\r
+ add edi, LockLocation\r
+ xchg byte ptr [edi], al\r
+\r
+ ;\r
+ ; Call assembly function to initialize FPU.\r
+ ;\r
+ mov ebx, InitializeFloatingPointUnits\r
+ call ebx\r
+ ;\r
+ ; Call C Function\r
+ ;\r
+ mov edi, esi\r
+ add edi, RendezvousProc\r
+ mov eax, dword ptr [edi]\r
+\r
+ test eax, eax\r
+ jz GoToSleep\r
+ call eax ; Call C function\r
+\r
+GoToSleep::\r
+ cli\r
+ hlt\r
+ jmp $-2\r
+\r
+RendezvousFunnelProc ENDP\r
+RendezvousFunnelProcEnd::\r
+;-------------------------------------------------------------------------------------\r
+; AsmGetAddressMap (&AddressMap);\r
+;-------------------------------------------------------------------------------------\r
+AsmGetAddressMap PROC near C PUBLIC\r
+\r
+ pushad\r
+ mov ebp,esp\r
+\r
+ mov ebx, dword ptr [ebp+24h]\r
+ mov dword ptr [ebx], RendezvousFunnelProcStart\r
+ mov dword ptr [ebx+4h], PMODE_ENTRY - RendezvousFunnelProcStart\r
+ mov dword ptr [ebx+8h], FLAT32_JUMP - RendezvousFunnelProcStart\r
+ mov dword ptr [ebx+0ch], RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
+\r
+ popad\r
+ ret\r
+\r
+AsmGetAddressMap ENDP\r
+\r
+END\r
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