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MdeModulePkg/PciSioSerial: Fix bad EOL
[mirror_edk2.git] / UefiCpuPkg / PiSmmCpuDxeSmm / X64 / MpFuncs.nasm
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1;------------------------------------------------------------------------------ ;\r
2; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r
3; This program and the accompanying materials\r
4; are licensed and made available under the terms and conditions of the BSD License\r
5; which accompanies this distribution. The full text of the license may be found at\r
6; http://opensource.org/licenses/bsd-license.php.\r
7;\r
8; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
9; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
10;\r
11; Module Name:\r
12;\r
13; MpFuncs.nasm\r
14;\r
15; Abstract:\r
16;\r
17; This is the assembly code for Multi-processor S3 support\r
18;\r
19;-------------------------------------------------------------------------------\r
20\r
21extern ASM_PFX(InitializeFloatingPointUnits)\r
22\r
23%define VacantFlag 0x0\r
24%define NotVacantFlag 0xff\r
25\r
26%define LockLocation RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
27%define StackStartAddressLocation LockLocation + 0x8\r
28%define StackSizeLocation LockLocation + 0x10\r
29%define CProcedureLocation LockLocation + 0x18\r
30%define GdtrLocation LockLocation + 0x20\r
31%define IdtrLocation LockLocation + 0x2A\r
32%define BufferStartLocation LockLocation + 0x34\r
33%define Cr3OffsetLocation LockLocation + 0x38\r
34\r
35;-------------------------------------------------------------------------------------\r
36;RendezvousFunnelProc procedure follows. All APs execute their procedure. This\r
37;procedure serializes all the AP processors through an Init sequence. It must be\r
38;noted that APs arrive here very raw...ie: real mode, no stack.\r
39;ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC\r
40;IS IN MACHINE CODE.\r
41;-------------------------------------------------------------------------------------\r
42;RendezvousFunnelProc (&WakeUpBuffer,MemAddress);\r
43\r
44;text SEGMENT\r
45DEFAULT REL\r
46SECTION .text\r
47\r
48BITS 16\r
49global ASM_PFX(RendezvousFunnelProc)\r
50ASM_PFX(RendezvousFunnelProc):\r
51RendezvousFunnelProcStart:\r
52\r
53; At this point CS = 0x(vv00) and ip= 0x0.\r
54\r
55 mov ax, cs\r
56 mov ds, ax\r
57 mov es, ax\r
58 mov ss, ax\r
59 xor ax, ax\r
60 mov fs, ax\r
61 mov gs, ax\r
62\r
63flat32Start:\r
64\r
65 mov si, BufferStartLocation\r
66 mov edx,dword [si] ; EDX is keeping the start address of wakeup buffer\r
67\r
68 mov si, Cr3OffsetLocation\r
69 mov ecx,dword [si] ; ECX is keeping the value of CR3\r
70\r
71 mov si, GdtrLocation\r
72o32 lgdt [cs:si]\r
73\r
74 mov si, IdtrLocation\r
75o32 lidt [cs:si]\r
76\r
77 xor ax, ax\r
78 mov ds, ax\r
79\r
80 mov eax, cr0 ; Get control register 0\r
81 or eax, 0x000000001 ; Set PE bit (bit #0)\r
82 mov cr0, eax\r
83\r
84FLAT32_JUMP:\r
85\r
86a32 jmp dword 0x20:0x0\r
87\r
88BITS 32\r
89PMODE_ENTRY: ; protected mode entry point\r
90\r
91 mov ax, 0x18\r
92o16 mov ds, ax\r
93o16 mov es, ax\r
94o16 mov fs, ax\r
95o16 mov gs, ax\r
96o16 mov ss, ax ; Flat mode setup.\r
97\r
98 mov eax, cr4\r
99 bts eax, 5\r
100 mov cr4, eax\r
101\r
102 mov cr3, ecx\r
103\r
104 mov esi, edx ; Save wakeup buffer address\r
105\r
106 mov ecx, 0xc0000080 ; EFER MSR number.\r
107 rdmsr ; Read EFER.\r
108 bts eax, 8 ; Set LME=1.\r
109 wrmsr ; Write EFER.\r
110\r
111 mov eax, cr0 ; Read CR0.\r
112 bts eax, 31 ; Set PG=1.\r
113 mov cr0, eax ; Write CR0.\r
114\r
115LONG_JUMP:\r
116\r
117a16 jmp dword 0x38:0x0\r
118\r
119BITS 64\r
120LongModeStart:\r
121\r
122 mov ax, 0x30\r
123o16 mov ds, ax\r
124o16 mov es, ax\r
125o16 mov ss, ax\r
126\r
127 mov edi, esi\r
128 add edi, LockLocation\r
129 mov al, NotVacantFlag\r
130TestLock:\r
131 xchg byte [edi], al\r
132 cmp al, NotVacantFlag\r
133 jz TestLock\r
134\r
135ProgramStack:\r
136\r
137 mov edi, esi\r
138 add edi, StackSizeLocation\r
139 mov rax, qword [edi]\r
140 mov edi, esi\r
141 add edi, StackStartAddressLocation\r
142 add rax, qword [edi]\r
143 mov rsp, rax\r
144 mov qword [edi], rax\r
145\r
146Releaselock:\r
147\r
148 mov al, VacantFlag\r
149 mov edi, esi\r
150 add edi, LockLocation\r
151 xchg byte [edi], al\r
152\r
153 ;\r
154 ; Call assembly function to initialize FPU.\r
155 ;\r
156 mov rax, ASM_PFX(InitializeFloatingPointUnits)\r
157 sub rsp, 0x20\r
158 call rax\r
159 add rsp, 0x20\r
160\r
161 ;\r
162 ; Call C Function\r
163 ;\r
164 mov edi, esi\r
165 add edi, CProcedureLocation\r
166 mov rax, qword [edi]\r
167\r
168 test rax, rax\r
169 jz GoToSleep\r
170\r
171 sub rsp, 0x20\r
172 call rax\r
173 add rsp, 0x20\r
174\r
175GoToSleep:\r
176 cli\r
177 hlt\r
178 jmp $-2\r
179\r
180RendezvousFunnelProcEnd:\r
181\r
182;-------------------------------------------------------------------------------------\r
183; AsmGetAddressMap (&AddressMap);\r
184;-------------------------------------------------------------------------------------\r
185; comments here for definition of address map\r
186global ASM_PFX(AsmGetAddressMap)\r
187ASM_PFX(AsmGetAddressMap):\r
188 mov rax, RendezvousFunnelProcStart\r
189 mov qword [rcx], rax\r
190 mov qword [rcx+0x8], PMODE_ENTRY - RendezvousFunnelProcStart\r
191 mov qword [rcx+0x10], FLAT32_JUMP - RendezvousFunnelProcStart\r
192 mov qword [rcx+0x18], RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
193 mov qword [rcx+0x20], LongModeStart - RendezvousFunnelProcStart\r
194 mov qword [rcx+0x28], LONG_JUMP - RendezvousFunnelProcStart\r
195 ret\r
196\r
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