1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
# Module Name:
#
# MpFuncs.S
#
# Abstract:
#
# This is the assembly code for Multi-processor S3 support
#
#------------------------------------------------------------------------------
.equ VacantFlag, 0x0
.equ NotVacantFlag, 0xff
.equ LockLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart
.equ StackStart, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x04
.equ StackSize, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x08
.equ RendezvousProc, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x0C
.equ GdtrProfile, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x10
.equ IdtrProfile, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x16
.equ BufferStart, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x1C
#-------------------------------------------------------------------------------------
#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);
ASM_GLOBAL ASM_PFX(RendezvousFunnelProc)
ASM_PFX(RendezvousFunnelProc):
RendezvousFunnelProcStart:
# At this point CS = 0x(vv00) and ip= 0x0.
.byte 0x8c,0xc8 # mov ax, cs
.byte 0x8e,0xd8 # mov ds, ax
.byte 0x8e,0xc0 # mov es, ax
.byte 0x8e,0xd0 # mov ss, ax
.byte 0x33,0xc0 # xor ax, ax
.byte 0x8e,0xe0 # mov fs, ax
.byte 0x8e,0xe8 # mov gs, ax
flat32Start:
.byte 0xBE
.word BufferStart
.byte 0x66,0x8B,0x14 # mov edx,dword ptr [si] ; EDX is keeping the start address of wakeup buffer
.byte 0xBE
.word GdtrProfile
.byte 0x66 # db 66h
.byte 0x2E,0xF,0x1,0x14 # lgdt fword ptr cs:[si]
.byte 0xBE
.word IdtrProfile
.byte 0x66 # db 66h
.byte 0x2E,0xF,0x1,0x1C # lidt fword ptr cs:[si]
.byte 0x33,0xC0 # xor ax, ax
.byte 0x8E,0xD8 # mov ds, ax
.byte 0xF,0x20,0xC0 # mov eax, cr0 ; Get control register 0
.byte 0x66,0x83,0xC8,0x1 # or eax, 000000001h ; Set PE bit (bit #0)
.byte 0xF,0x22,0xC0 # mov cr0, eax
FLAT32_JUMP:
.byte 0x66,0x67,0xEA # far jump
.long 0x0 # 32-bit offset
.word 0x20 # 16-bit selector
PMODE_ENTRY: # protected mode entry point
movw $0x8,%ax
.byte 0x66
movw %ax,%ds
.byte 0x66
movw %ax,%es
.byte 0x66
movw %ax,%fs
.byte 0x66
movw %ax,%gs
.byte 0x66
movw %ax,%ss # Flat mode setup.
movl %edx,%esi
movl %esi,%edi
addl $LockLocation, %edi
movb $NotVacantFlag, %al
TestLock:
xchgb (%edi), %al
cmpb $NotVacantFlag, %al
jz TestLock
ProgramStack:
movl %esi,%edi
addl $StackSize, %edi
movl (%edi),%eax
movl %esi,%edi
addl $StackStart, %edi
addl (%edi),%eax
movl %eax,%esp
movl %eax,(%edi)
Releaselock:
movb $VacantFlag, %al
movl %esi,%edi
addl $LockLocation, %edi
xchgb (%edi), %al
#
# Call assembly function to initialize FPU.
#
lea ASM_PFX(InitializeFloatingPointUnits), %ebx
call *%ebx
#
# Call C Function
#
movl %esi,%edi
addl $RendezvousProc, %edi
movl (%edi),%eax
testl %eax,%eax
jz GoToSleep
call *%eax # Call C function
GoToSleep:
cli
hlt
jmp GoToSleep
RendezvousFunnelProcEnd:
#-------------------------------------------------------------------------------------
# AsmGetAddressMap (&AddressMap);
#-------------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(AsmGetAddressMap)
ASM_PFX(AsmGetAddressMap):
pushal
movl %esp,%ebp
movl 0x24(%ebp), %ebx
movl $RendezvousFunnelProcStart, (%ebx)
movl $(PMODE_ENTRY - RendezvousFunnelProcStart), 0x4(%ebx)
movl $(FLAT32_JUMP - RendezvousFunnelProcStart), 0x8(%ebx)
movl $(RendezvousFunnelProcEnd - RendezvousFunnelProcStart), 0x0c(%ebx)
popal
ret
|
