1 #------------------------------------------------------------------------------
2 # X64 assembly file for AP startup vector.
4 # Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
5 # This program and the accompanying materials
6 # are licensed and made available under the terms and conditions of the BSD License
7 # which accompanies this distribution. The full text of the license may be found at
8 # http://opensource.org/licenses/bsd-license.php
10 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13 #------------------------------------------------------------------------------
17 .equ NotVacantFlag, 0xff
19 .equ LockLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart
20 .equ StackStartAddressLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x08
21 .equ StackSizeLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x10
22 .equ CProcedureLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x18
23 .equ GdtrLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x20
24 .equ BufferStartLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x2C
25 .equ Cr3OffsetLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x30
27 #-------------------------------------------------------------------------------------
29 #-------------------------------------------------------------------------------------
30 #RendezvousFunnelProc procedure follows. All APs execute their procedure. This
31 #procedure serializes all the AP processors through an Init sequence. It must be
32 #noted that APs arrive here very raw...ie: real mode, no stack.
33 #ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC
35 #-------------------------------------------------------------------------------------
36 #RendezvousFunnelProc (&WakeUpBuffer,MemAddress);
40 ASM_GLOBAL ASM_PFX(RendezvousFunnelProc)
41 ASM_PFX(RendezvousFunnelProc):
42 RendezvousFunnelProcStart:
44 # At this point CS = 0x(vv00) and ip= 0x0.
46 .byte 0x8c,0xc8 # mov ax, cs
47 .byte 0x8e,0xd8 # mov ds, ax
48 .byte 0x8e,0xc0 # mov es, ax
49 .byte 0x8e,0xd0 # mov ss, ax
50 .byte 0x33,0xc0 # xor ax, ax
51 .byte 0x8e,0xe0 # mov fs, ax
52 .byte 0x8e,0xe8 # mov gs, ax
54 # Switch to flat mode.
57 .word BufferStartLocation
58 .byte 0x66,0x8B,0x14 # mov edx,dword ptr [si] ; EDX is keeping the start address of wakeup buffer
61 .word Cr3OffsetLocation
62 .byte 0x66,0x8B,0xC # mov ecx,dword ptr [si] ; ECX is keeping the value of CR3
67 .byte 0x2E,0xF,0x1,0x14 # lgdt fword ptr cs:[si]
72 .byte 0x2E,0xF,0x1,0x1C # lidt fword ptr cs:[si]
74 .byte 0x33,0xC0 # xor ax, ax
75 .byte 0x8E,0xD8 # mov ds, ax
77 .byte 0xF,0x20,0xC0 # mov eax, cr0 ; Get control register 0
78 .byte 0x66,0x83,0xC8,0x1 # or eax, 000000001h ; Set PE bit (bit #0)
79 .byte 0xF,0x22,0xC0 # mov cr0, eax
83 .byte 0x66,0x67,0xEA # far jump
84 .long 0x0 # 32-bit offset
85 .word 0x20 # 16-bit selector
89 .byte 0x66,0xB8,0x18,0x0 # mov ax, 18h
90 .byte 0x66,0x8E,0xD8 # mov ds, ax
91 .byte 0x66,0x8E,0xC0 # mov es, ax
92 .byte 0x66,0x8E,0xE0 # mov fs, ax
93 .byte 0x66,0x8E,0xE8 # mov gs, ax
94 .byte 0x66,0x8E,0xD0 # mov ss, ax ; Flat mode setup.
96 .byte 0xF,0x20,0xE0 # mov eax, cr4
97 .byte 0xF,0xBA,0xE8,0x5 # bts eax, 5
98 .byte 0xF,0x22,0xE0 # mov cr4, eax
100 .byte 0xF,0x22,0xD9 # mov cr3, ecx
102 .byte 0x8B,0xF2 # mov esi, edx ; Save wakeup buffer address
105 .long 0xC0000080 # mov ecx, 0c0000080h ; EFER MSR number.
106 .byte 0xF,0x32 # rdmsr ; Read EFER.
107 .byte 0xF,0xBA,0xE8,0x8 # bts eax, 8 ; Set LME=1.
108 .byte 0xF,0x30 # wrmsr ; Write EFER.
110 .byte 0xF,0x20,0xC0 # mov eax, cr0 ; Read CR0.
111 .byte 0xF,0xBA,0xE8,0x1F # bts eax, 31 ; Set PG=1.
112 .byte 0xF,0x22,0xC0 # mov cr0, eax ; Write CR0.
116 .byte 0x67,0xEA # far jump
117 .long 0x0 # 32-bit offset
118 .word 0x38 # 16-bit selector
131 addl $LockLocation, %edi
132 movb $NotVacantFlag, %al
135 cmpb $NotVacantFlag, %al
141 addl $StackSizeLocation, %edi
144 addl $StackStartAddressLocation, %edi
151 movb $VacantFlag, %al
153 addl $LockLocation, %edi
160 addl $CProcedureLocation, %edi
176 RendezvousFunnelProcEnd:
179 #-------------------------------------------------------------------------------------
180 # AsmGetAddressMap (&AddressMap);
181 #-------------------------------------------------------------------------------------
182 # comments here for definition of address map
183 ASM_GLOBAL ASM_PFX(AsmGetAddressMap)
184 ASM_PFX(AsmGetAddressMap):
186 movq $RendezvousFunnelProcStart, %rax
188 movq $(ProtectedModeStart - RendezvousFunnelProcStart), 0x08(%rcx)
189 movq $(FLAT32_JUMP - RendezvousFunnelProcStart), 0x10(%rcx)
190 movq $(LongModeStart - RendezvousFunnelProcStart), 0x18(%rcx)
191 movq $(LONG_JUMP - RendezvousFunnelProcStart), 0x20(%rcx)
192 movq $(RendezvousFunnelProcEnd - RendezvousFunnelProcStart), 0x28(%rcx)