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427e3573 MK |
1 | #------------------------------------------------------------------------------\r |
2 | #\r | |
3 | # Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
4 | # This program and the accompanying materials\r | |
5 | # are licensed and made available under the terms and conditions of the BSD License\r | |
6 | # which accompanies this distribution. The full text of the license may be found at\r | |
7 | # http://opensource.org/licenses/bsd-license.php.\r | |
8 | #\r | |
9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | #\r | |
12 | # Module Name:\r | |
13 | #\r | |
14 | # MpFuncs.S\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
18 | # This is the assembly code for Multi-processor S3 support\r | |
19 | #\r | |
20 | #------------------------------------------------------------------------------\r | |
21 | \r | |
22 | .equ VacantFlag, 0x0\r | |
23 | .equ NotVacantFlag, 0xff\r | |
24 | \r | |
25 | .equ LockLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r | |
26 | .equ StackStartAddressLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x08\r | |
27 | .equ StackSizeLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x10\r | |
28 | .equ CProcedureLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x18\r | |
29 | .equ GdtrLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x20\r | |
30 | .equ IdtrLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x2A\r | |
31 | .equ BufferStartLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x34\r | |
32 | .equ Cr3OffsetLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x38\r | |
33 | \r | |
34 | #-------------------------------------------------------------------------------------\r | |
35 | #RendezvousFunnelProc procedure follows. All APs execute their procedure. This\r | |
36 | #procedure serializes all the AP processors through an Init sequence. It must be\r | |
37 | #noted that APs arrive here very raw...ie: real mode, no stack.\r | |
38 | #ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC\r | |
39 | #IS IN MACHINE CODE.\r | |
40 | #-------------------------------------------------------------------------------------\r | |
41 | #RendezvousFunnelProc (&WakeUpBuffer,MemAddress);\r | |
42 | \r | |
43 | .code:\r | |
44 | \r | |
45 | ASM_GLOBAL ASM_PFX(RendezvousFunnelProc)\r | |
46 | ASM_PFX(RendezvousFunnelProc):\r | |
47 | RendezvousFunnelProcStart:\r | |
48 | \r | |
49 | # At this point CS = 0x(vv00) and ip= 0x0.\r | |
50 | \r | |
51 | .byte 0x8c,0xc8 # mov ax, cs\r | |
52 | .byte 0x8e,0xd8 # mov ds, ax\r | |
53 | .byte 0x8e,0xc0 # mov es, ax\r | |
54 | .byte 0x8e,0xd0 # mov ss, ax\r | |
55 | .byte 0x33,0xc0 # xor ax, ax\r | |
56 | .byte 0x8e,0xe0 # mov fs, ax\r | |
57 | .byte 0x8e,0xe8 # mov gs, ax\r | |
58 | \r | |
59 | flat32Start:\r | |
60 | \r | |
61 | .byte 0xBE\r | |
62 | .word BufferStartLocation\r | |
63 | .byte 0x66,0x8B,0x14 # mov edx,dword ptr [si] ; EDX is keeping the start address of wakeup buffer\r | |
64 | \r | |
65 | .byte 0xBE\r | |
66 | .word Cr3OffsetLocation\r | |
67 | .byte 0x66,0x8B,0xC # mov ecx,dword ptr [si] ; ECX is keeping the value of CR3\r | |
68 | \r | |
69 | .byte 0xBE\r | |
70 | .word GdtrLocation\r | |
71 | .byte 0x66 # db 66h\r | |
72 | .byte 0x2E,0xF,0x1,0x14 # lgdt fword ptr cs:[si]\r | |
73 | \r | |
74 | .byte 0xBE\r | |
75 | .word IdtrLocation\r | |
76 | .byte 0x66 # db 66h\r | |
77 | .byte 0x2E,0xF,0x1,0x1C # lidt fword ptr cs:[si]\r | |
78 | \r | |
79 | .byte 0x33,0xC0 # xor ax, ax\r | |
80 | .byte 0x8E,0xD8 # mov ds, ax\r | |
81 | \r | |
82 | .byte 0xF,0x20,0xC0 # mov eax, cr0 ; Get control register 0\r | |
83 | .byte 0x66,0x83,0xC8,0x1 # or eax, 000000001h ; Set PE bit (bit #0)\r | |
84 | .byte 0xF,0x22,0xC0 # mov cr0, eax\r | |
85 | \r | |
86 | FLAT32_JUMP:\r | |
87 | \r | |
88 | .byte 0x66,0x67,0xEA # far jump\r | |
89 | .long 0x0 # 32-bit offset\r | |
90 | .word 0x20 # 16-bit selector\r | |
91 | \r | |
92 | PMODE_ENTRY: # protected mode entry point\r | |
93 | \r | |
94 | .byte 0x66,0xB8,0x18,0x0 # mov ax, 18h\r | |
95 | .byte 0x66,0x8E,0xD8 # mov ds, ax\r | |
96 | .byte 0x66,0x8E,0xC0 # mov es, ax\r | |
97 | .byte 0x66,0x8E,0xE0 # mov fs, ax\r | |
98 | .byte 0x66,0x8E,0xE8 # mov gs, ax\r | |
99 | .byte 0x66,0x8E,0xD0 # mov ss, ax ; Flat mode setup.\r | |
100 | \r | |
101 | .byte 0xF,0x20,0xE0 # mov eax, cr4\r | |
102 | .byte 0xF,0xBA,0xE8,0x5 # bts eax, 5\r | |
103 | .byte 0xF,0x22,0xE0 # mov cr4, eax\r | |
104 | \r | |
105 | .byte 0xF,0x22,0xD9 # mov cr3, ecx\r | |
106 | \r | |
107 | .byte 0x8B,0xF2 # mov esi, edx ; Save wakeup buffer address\r | |
108 | \r | |
109 | .byte 0xB9\r | |
110 | .long 0xC0000080 # mov ecx, 0c0000080h ; EFER MSR number.\r | |
111 | .byte 0xF,0x32 # rdmsr ; Read EFER.\r | |
112 | .byte 0xF,0xBA,0xE8,0x8 # bts eax, 8 ; Set LME=1.\r | |
113 | .byte 0xF,0x30 # wrmsr ; Write EFER.\r | |
114 | \r | |
115 | .byte 0xF,0x20,0xC0 # mov eax, cr0 ; Read CR0.\r | |
116 | .byte 0xF,0xBA,0xE8,0x1F # bts eax, 31 ; Set PG=1.\r | |
117 | .byte 0xF,0x22,0xC0 # mov cr0, eax ; Write CR0.\r | |
118 | \r | |
119 | LONG_JUMP:\r | |
120 | \r | |
121 | .byte 0x67,0xEA # far jump\r | |
122 | .long 0x0 # 32-bit offset\r | |
123 | .word 0x38 # 16-bit selector\r | |
124 | \r | |
125 | LongModeStart:\r | |
126 | \r | |
127 | movw $0x30,%ax\r | |
128 | .byte 0x66\r | |
129 | movw %ax,%ds\r | |
130 | .byte 0x66\r | |
131 | movw %ax,%es\r | |
132 | .byte 0x66\r | |
133 | movw %ax,%ss\r | |
134 | \r | |
135 | movl %esi,%edi\r | |
136 | addl $LockLocation, %edi\r | |
137 | movb $NotVacantFlag, %al\r | |
138 | TestLock:\r | |
139 | xchgb (%edi), %al\r | |
140 | cmpb $NotVacantFlag, %al\r | |
141 | jz TestLock\r | |
142 | \r | |
143 | ProgramStack:\r | |
144 | \r | |
145 | movl %esi,%edi\r | |
146 | addl $StackSizeLocation, %edi\r | |
147 | movq (%edi), %rax\r | |
148 | movl %esi,%edi\r | |
149 | addl $StackStartAddressLocation, %edi\r | |
150 | addq (%edi), %rax\r | |
151 | movq %rax, %rsp\r | |
152 | movq %rax, (%edi)\r | |
153 | \r | |
154 | Releaselock:\r | |
155 | \r | |
156 | movb $VacantFlag, %al\r | |
157 | movl %esi,%edi\r | |
158 | addl $LockLocation, %edi\r | |
159 | xchgb (%edi), %al\r | |
160 | \r | |
161 | #\r | |
162 | # Call assembly function to initialize FPU.\r | |
163 | #\r | |
164 | movabsq $ASM_PFX(InitializeFloatingPointUnits), %rax\r | |
165 | subq $0x20, %rsp\r | |
166 | call *%rax\r | |
167 | addq $0x20, %rsp\r | |
168 | #\r | |
169 | # Call C Function\r | |
170 | #\r | |
171 | movl %esi,%edi\r | |
172 | addl $CProcedureLocation, %edi\r | |
173 | movq (%edi), %rax\r | |
174 | \r | |
175 | testq %rax, %rax\r | |
176 | jz GoToSleep\r | |
177 | \r | |
178 | subq $0x20, %rsp\r | |
179 | call *%rax\r | |
180 | addq $0x20, %rsp\r | |
181 | \r | |
182 | GoToSleep:\r | |
183 | cli\r | |
184 | hlt\r | |
185 | jmp .-2\r | |
186 | \r | |
187 | RendezvousFunnelProcEnd:\r | |
188 | \r | |
189 | \r | |
190 | #-------------------------------------------------------------------------------------\r | |
191 | # AsmGetAddressMap (&AddressMap);\r | |
192 | #-------------------------------------------------------------------------------------\r | |
193 | # comments here for definition of address map\r | |
194 | ASM_GLOBAL ASM_PFX(AsmGetAddressMap)\r | |
195 | ASM_PFX(AsmGetAddressMap):\r | |
196 | movabsq $RendezvousFunnelProcStart, %rax\r | |
197 | movq %rax, (%rcx)\r | |
198 | movq $(PMODE_ENTRY - RendezvousFunnelProcStart), 0x08(%rcx)\r | |
199 | movq $(FLAT32_JUMP - RendezvousFunnelProcStart), 0x10(%rcx)\r | |
200 | movq $(RendezvousFunnelProcEnd - RendezvousFunnelProcStart), 0x18(%rcx)\r | |
201 | movq $(LongModeStart - RendezvousFunnelProcStart), 0x20(%rcx)\r | |
202 | movq $(LONG_JUMP - RendezvousFunnelProcStart), 0x28(%rcx)\r | |
203 | ret\r | |
204 | \r |