--- /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
+EXTERN InitializeFloatingPointUnits:PROC\r
+\r
+VacantFlag Equ 00h\r
+NotVacantFlag Equ 0ffh\r
+\r
+LockLocation equ RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
+StackStartAddressLocation equ LockLocation + 08h\r
+StackSizeLocation equ LockLocation + 10h\r
+CProcedureLocation equ LockLocation + 18h\r
+GdtrLocation equ LockLocation + 20h\r
+IdtrLocation equ LockLocation + 2Ah\r
+BufferStartLocation equ LockLocation + 34h\r
+Cr3OffsetLocation equ LockLocation + 38h\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
+;text SEGMENT\r
+.code\r
+\r
+RendezvousFunnelProc PROC\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 BufferStartLocation ; mov si, BufferStartLocation\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 Cr3OffsetLocation ; mov si, Cr3Location\r
+ db 66h, 8Bh, 0Ch ; mov ecx,dword ptr [si] ; ECX is keeping the value of CR3\r
+\r
+ db 0BEh\r
+ dw GdtrLocation ; 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 IdtrLocation ; 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
+ db 66h, 0B8h, 18h, 00h ; mov ax, 18h\r
+ db 66h, 8Eh, 0D8h ; mov ds, ax\r
+ db 66h, 8Eh, 0C0h ; mov es, ax\r
+ db 66h, 8Eh, 0E0h ; mov fs, ax\r
+ db 66h, 8Eh, 0E8h ; mov gs, ax\r
+ db 66h, 8Eh, 0D0h ; mov ss, ax ; Flat mode setup.\r
+\r
+ db 0Fh, 20h, 0E0h ; mov eax, cr4\r
+ db 0Fh, 0BAh, 0E8h, 05h ; bts eax, 5\r
+ db 0Fh, 22h, 0E0h ; mov cr4, eax\r
+\r
+ db 0Fh, 22h, 0D9h ; mov cr3, ecx\r
+\r
+ db 8Bh, 0F2h ; mov esi, edx ; Save wakeup buffer address\r
+\r
+ db 0B9h\r
+ dd 0C0000080h ; mov ecx, 0c0000080h ; EFER MSR number.\r
+ db 0Fh, 32h ; rdmsr ; Read EFER.\r
+ db 0Fh, 0BAh, 0E8h, 08h ; bts eax, 8 ; Set LME=1.\r
+ db 0Fh, 30h ; wrmsr ; Write EFER.\r
+\r
+ db 0Fh, 20h, 0C0h ; mov eax, cr0 ; Read CR0.\r
+ db 0Fh, 0BAh, 0E8h, 1Fh ; bts eax, 31 ; Set PG=1.\r
+ db 0Fh, 22h, 0C0h ; mov cr0, eax ; Write CR0.\r
+\r
+LONG_JUMP::\r
+\r
+ db 67h, 0EAh ; far jump\r
+ dd 0h ; 32-bit offset\r
+ dw 38h ; 16-bit selector\r
+\r
+LongModeStart::\r
+\r
+ mov ax, 30h\r
+ mov ds, ax\r
+ mov es, ax\r
+ mov ss, ax\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, StackSizeLocation\r
+ mov rax, qword ptr [edi]\r
+ mov edi, esi\r
+ add edi, StackStartAddressLocation\r
+ add rax, qword ptr [edi]\r
+ mov rsp, rax\r
+ mov qword ptr [edi], rax\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 rax, InitializeFloatingPointUnits\r
+ sub rsp, 20h\r
+ call rax\r
+ add rsp, 20h\r
+\r
+ ;\r
+ ; Call C Function\r
+ ;\r
+ mov edi, esi\r
+ add edi, CProcedureLocation\r
+ mov rax, qword ptr [edi]\r
+\r
+ test rax, rax\r
+ jz GoToSleep\r
+\r
+ sub rsp, 20h\r
+ call rax\r
+ add rsp, 20h\r
+\r
+GoToSleep::\r
+ cli\r
+ hlt\r
+ jmp $-2\r
+\r
+RendezvousFunnelProcEnd::\r
+RendezvousFunnelProc ENDP\r
+\r
+\r
+;-------------------------------------------------------------------------------------\r
+; AsmGetAddressMap (&AddressMap);\r
+;-------------------------------------------------------------------------------------\r
+; comments here for definition of address map\r
+AsmGetAddressMap PROC\r
+ mov rax, offset RendezvousFunnelProcStart\r
+ mov qword ptr [rcx], rax\r
+ mov qword ptr [rcx+8h], PMODE_ENTRY - RendezvousFunnelProcStart\r
+ mov qword ptr [rcx+10h], FLAT32_JUMP - RendezvousFunnelProcStart\r
+ mov qword ptr [rcx+18h], RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
+ mov qword ptr [rcx+20h], LongModeStart - RendezvousFunnelProcStart\r
+ mov qword ptr [rcx+28h], LONG_JUMP - RendezvousFunnelProcStart\r
+ ret\r
+\r
+AsmGetAddressMap ENDP\r
+\r
+END\r
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