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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <arch/asm.h> |
29 | #include <arch/asm.h> |
30 | #include <context.h> |
30 | #include <context.h> |
31 | #include <print.h> |
31 | #include <print.h> |
32 | #include <panic.h> |
32 | #include <panic.h> |
33 | #include <config.h> |
33 | #include <config.h> |
34 | #include <time/clock.h> |
34 | #include <time/clock.h> |
35 | #include <proc/scheduler.h> |
35 | #include <proc/scheduler.h> |
36 | #include <proc/thread.h> |
36 | #include <proc/thread.h> |
37 | #include <proc/task.h> |
37 | #include <proc/task.h> |
38 | #include <mm/vm.h> |
38 | #include <mm/vm.h> |
39 | #include <main/kinit.h> |
39 | #include <main/kinit.h> |
40 | #include <cpu.h> |
40 | #include <cpu.h> |
41 | #include <mm/heap.h> |
41 | #include <mm/heap.h> |
42 | 42 | ||
43 | #ifdef __SMP__ |
43 | #ifdef __SMP__ |
44 | #include <arch/smp/apic.h> |
44 | #include <arch/smp/apic.h> |
45 | #include <arch/smp/mps.h> |
45 | #include <arch/smp/mps.h> |
46 | #endif /* __SMP__ */ |
46 | #endif /* __SMP__ */ |
47 | 47 | ||
48 | #include <smp/smp.h> |
48 | #include <smp/smp.h> |
49 | 49 | ||
50 | #include <arch/mm/memory_init.h> |
50 | #include <arch/mm/memory_init.h> |
51 | #include <mm/frame.h> |
51 | #include <mm/frame.h> |
52 | #include <mm/page.h> |
52 | #include <mm/page.h> |
53 | #include <mm/tlb.h> |
53 | #include <mm/tlb.h> |
54 | #include <synch/waitq.h> |
54 | #include <synch/waitq.h> |
55 | 55 | ||
56 | #include <arch.h> |
56 | #include <arch.h> |
57 | #include <arch/faddr.h> |
57 | #include <arch/faddr.h> |
58 | 58 | ||
59 | #include <typedefs.h> |
59 | #include <typedefs.h> |
60 | 60 | ||
61 | char *project = "SPARTAN kernel"; |
61 | char *project = "SPARTAN kernel"; |
62 | char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project"; |
62 | char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project"; |
63 | 63 | ||
64 | config_t config; |
64 | config_t config; |
65 | context_t ctx; |
65 | context_t ctx; |
66 | 66 | ||
67 | /* |
67 | /* |
68 | * These 'hardcoded' variables will be intialised by |
68 | * These 'hardcoded' variables will be intialised by |
69 | * the linker or the low level assembler code with |
69 | * the linker or the low level assembler code with |
70 | * appropriate sizes and addresses. |
70 | * appropriate sizes and addresses. |
71 | */ |
71 | */ |
72 | __address hardcoded_load_address = 0; |
72 | __address hardcoded_load_address = 0; |
73 | size_t hardcoded_ktext_size = 0; |
73 | size_t hardcoded_ktext_size = 0; |
74 | size_t hardcoded_kdata_size = 0; |
74 | size_t hardcoded_kdata_size = 0; |
75 | 75 | ||
76 | /* |
76 | /* |
77 | * Size of memory in bytes taken by kernel and heap. |
77 | * Size of memory in bytes taken by kernel and heap. |
78 | */ |
78 | */ |
79 | static size_t kernel_size; |
79 | static size_t kernel_size; |
80 | 80 | ||
81 | /* |
81 | /* |
82 | * Extra space on heap to make the stack start on page boundary. |
82 | * Extra space on heap to make the stack start on page boundary. |
83 | */ |
83 | */ |
84 | static size_t heap_delta; |
84 | static size_t heap_delta; |
85 | 85 | ||
86 | void main_bsp(void); |
86 | void main_bsp(void); |
87 | void main_ap(void); |
87 | void main_ap(void); |
88 | 88 | ||
89 | /* |
89 | /* |
90 | * These two functions prevent stack from underflowing during the |
90 | * These two functions prevent stack from underflowing during the |
91 | * kernel boot phase when SP is set to the very top of the reserved |
91 | * kernel boot phase when SP is set to the very top of the reserved |
92 | * space. The stack could get corrupted by a fooled compiler-generated |
92 | * space. The stack could get corrupted by a fooled compiler-generated |
93 | * pop sequence otherwise. |
93 | * pop sequence otherwise. |
94 | */ |
94 | */ |
95 | static void main_bsp_separated_stack(void); |
95 | static void main_bsp_separated_stack(void); |
96 | static void main_ap_separated_stack(void); |
96 | static void main_ap_separated_stack(void); |
97 | 97 | ||
98 | /** Bootstrap CPU main kernel routine |
98 | /** Bootstrap CPU main kernel routine |
99 | * |
99 | * |
100 | * Initializes the kernel by bootstrap CPU. |
100 | * Initializes the kernel by bootstrap CPU. |
101 | * |
101 | * |
102 | * Assuming cpu_priority_high(). |
102 | * Assuming cpu_priority_high(). |
103 | * |
103 | * |
104 | */ |
104 | */ |
105 | void main_bsp(void) |
105 | void main_bsp(void) |
106 | { |
106 | { |
107 | config.cpu_count = 1; |
107 | config.cpu_count = 1; |
108 | config.cpu_active = 1; |
108 | config.cpu_active = 1; |
109 | 109 | ||
110 | kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE; |
110 | kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE; |
111 | heap_delta = PAGE_SIZE - ((hardcoded_load_address + kernel_size) % PAGE_SIZE); |
111 | heap_delta = PAGE_SIZE - ((hardcoded_load_address + kernel_size) % PAGE_SIZE); |
112 | heap_delta = (heap_delta == PAGE_SIZE) ? 0 : heap_delta; |
112 | heap_delta = (heap_delta == PAGE_SIZE) ? 0 : heap_delta; |
113 | kernel_size += heap_delta; |
113 | kernel_size += heap_delta; |
114 | 114 | ||
115 | config.base = hardcoded_load_address; |
115 | config.base = hardcoded_load_address; |
116 | config.memory_size = get_memory_size(); |
116 | config.memory_size = get_memory_size(); |
117 | config.kernel_size = kernel_size + CONFIG_STACK_SIZE; |
117 | config.kernel_size = kernel_size + CONFIG_STACK_SIZE; |
118 | 118 | ||
119 | context_save(&ctx); |
119 | context_save(&ctx); |
120 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE); |
120 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE); |
- | 121 | context_map_stack(config.base + kernel_size, CONFIG_STACK_SIZE); |
|
121 | context_restore(&ctx); |
122 | context_restore(&ctx); |
122 | /* not reached */ |
123 | /* not reached */ |
123 | } |
124 | } |
124 | 125 | ||
125 | 126 | ||
126 | /** Bootstrap CPU main kernel routine stack wrapper |
127 | /** Bootstrap CPU main kernel routine stack wrapper |
127 | * |
128 | * |
128 | * Second part of main_bsp(). |
129 | * Second part of main_bsp(). |
129 | * |
130 | * |
130 | */ |
131 | */ |
131 | void main_bsp_separated_stack(void) |
132 | void main_bsp_separated_stack(void) |
132 | { |
133 | { |
133 | vm_t *m; |
134 | vm_t *m; |
134 | task_t *k; |
135 | task_t *k; |
135 | thread_t *t; |
136 | thread_t *t; |
136 | 137 | ||
137 | the_initialize(THE); |
138 | the_initialize(THE); |
138 | 139 | ||
139 | arch_pre_mm_init(); |
140 | arch_pre_mm_init(); |
140 | heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE + heap_delta); |
141 | heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE + heap_delta); |
141 | frame_init(); |
142 | frame_init(); |
142 | page_init(); |
143 | page_init(); |
143 | tlb_init(); |
144 | tlb_init(); |
144 | 145 | ||
145 | arch_post_mm_init(); |
146 | arch_post_mm_init(); |
146 | 147 | ||
147 | printf("%s\n%s\n", project, copyright); |
148 | printf("%s\n%s\n", project, copyright); |
148 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
149 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
149 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
150 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
150 | 151 | ||
151 | arch_late_init(); |
152 | arch_late_init(); |
152 | 153 | ||
153 | smp_init(); |
154 | smp_init(); |
154 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
155 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
155 | printf("config.cpu_count=%d\n", config.cpu_count); |
156 | printf("config.cpu_count=%d\n", config.cpu_count); |
156 | 157 | ||
157 | cpu_init(); |
158 | cpu_init(); |
158 | calibrate_delay_loop(); |
159 | calibrate_delay_loop(); |
159 | 160 | ||
160 | timeout_init(); |
161 | timeout_init(); |
161 | scheduler_init(); |
162 | scheduler_init(); |
162 | task_init(); |
163 | task_init(); |
163 | thread_init(); |
164 | thread_init(); |
164 | 165 | ||
165 | /* |
166 | /* |
166 | * Create kernel vm mapping. |
167 | * Create kernel vm mapping. |
167 | */ |
168 | */ |
168 | m = vm_create(GET_PTL0_ADDRESS()); |
169 | m = vm_create(GET_PTL0_ADDRESS()); |
169 | if (!m) panic("can't create kernel vm address space\n"); |
170 | if (!m) panic("can't create kernel vm address space\n"); |
170 | 171 | ||
171 | /* |
172 | /* |
172 | * Create kernel task. |
173 | * Create kernel task. |
173 | */ |
174 | */ |
174 | k = task_create(m); |
175 | k = task_create(m); |
175 | if (!k) panic("can't create kernel task\n"); |
176 | if (!k) panic("can't create kernel task\n"); |
176 | 177 | ||
177 | /* |
178 | /* |
178 | * Create the first thread. |
179 | * Create the first thread. |
179 | */ |
180 | */ |
180 | t = thread_create(kinit, NULL, k, 0); |
181 | t = thread_create(kinit, NULL, k, 0); |
181 | if (!t) panic("can't create kinit thread\n"); |
182 | if (!t) panic("can't create kinit thread\n"); |
182 | thread_ready(t); |
183 | thread_ready(t); |
183 | 184 | ||
184 | /* |
185 | /* |
185 | * This call to scheduler() will return to kinit, |
186 | * This call to scheduler() will return to kinit, |
186 | * starting the thread of kernel threads. |
187 | * starting the thread of kernel threads. |
187 | */ |
188 | */ |
188 | scheduler(); |
189 | scheduler(); |
189 | /* not reached */ |
190 | /* not reached */ |
190 | } |
191 | } |
191 | 192 | ||
192 | 193 | ||
193 | #ifdef __SMP__ |
194 | #ifdef __SMP__ |
194 | /** Application CPUs main kernel routine |
195 | /** Application CPUs main kernel routine |
195 | * |
196 | * |
196 | * Executed by application processors, temporary stack |
197 | * Executed by application processors, temporary stack |
197 | * is at ctx.sp which was set during BP boot. |
198 | * is at ctx.sp which was set during BP boot. |
198 | * |
199 | * |
199 | * Assuming cpu_priority_high(). |
200 | * Assuming cpu_priority_high(). |
200 | * |
201 | * |
201 | */ |
202 | */ |
202 | void main_ap(void) |
203 | void main_ap(void) |
203 | { |
204 | { |
204 | /* |
205 | /* |
205 | * Incrementing the active CPU counter will guarantee that the |
206 | * Incrementing the active CPU counter will guarantee that the |
206 | * pm_init() will not attempt to build GDT and IDT tables again. |
207 | * pm_init() will not attempt to build GDT and IDT tables again. |
207 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
208 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
208 | * will do. |
209 | * will do. |
209 | */ |
210 | */ |
210 | config.cpu_active++; |
211 | config.cpu_active++; |
211 | 212 | ||
212 | /* |
213 | /* |
213 | * The THE structure is well defined because ctx.sp is used as stack. |
214 | * The THE structure is well defined because ctx.sp is used as stack. |
214 | */ |
215 | */ |
215 | the_initialize(THE); |
216 | the_initialize(THE); |
216 | 217 | ||
217 | arch_pre_mm_init(); |
218 | arch_pre_mm_init(); |
218 | frame_init(); |
219 | frame_init(); |
219 | page_init(); |
220 | page_init(); |
220 | arch_post_mm_init(); |
221 | arch_post_mm_init(); |
221 | 222 | ||
222 | cpu_init(); |
223 | cpu_init(); |
223 | calibrate_delay_loop(); |
224 | calibrate_delay_loop(); |
224 | 225 | ||
225 | l_apic_init(); |
226 | l_apic_init(); |
226 | l_apic_debug(); |
227 | l_apic_debug(); |
227 | 228 | ||
228 | the_copy(THE, (the_t *) CPU->stack); |
229 | the_copy(THE, (the_t *) CPU->stack); |
229 | 230 | ||
230 | /* |
231 | /* |
231 | * If we woke kmp up before we left the kernel stack, we could |
232 | * If we woke kmp up before we left the kernel stack, we could |
232 | * collide with another CPU coming up. To prevent this, we |
233 | * collide with another CPU coming up. To prevent this, we |
233 | * switch to this cpu's private stack prior to waking kmp up. |
234 | * switch to this cpu's private stack prior to waking kmp up. |
234 | */ |
235 | */ |
235 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE); |
236 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE); |
236 | context_restore(&CPU->saved_context); |
237 | context_restore(&CPU->saved_context); |
237 | /* not reached */ |
238 | /* not reached */ |
238 | } |
239 | } |
239 | 240 | ||
240 | 241 | ||
241 | /** Application CPUs main kernel routine stack wrapper |
242 | /** Application CPUs main kernel routine stack wrapper |
242 | * |
243 | * |
243 | * Second part of main_ap(). |
244 | * Second part of main_ap(). |
244 | * |
245 | * |
245 | */ |
246 | */ |
246 | void main_ap_separated_stack(void) |
247 | void main_ap_separated_stack(void) |
247 | { |
248 | { |
248 | /* |
249 | /* |
249 | * Configure timeouts for this cpu. |
250 | * Configure timeouts for this cpu. |
250 | */ |
251 | */ |
251 | timeout_init(); |
252 | timeout_init(); |
252 | 253 | ||
253 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
254 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
254 | scheduler(); |
255 | scheduler(); |
255 | /* not reached */ |
256 | /* not reached */ |
256 | } |
257 | } |
257 | #endif /* __SMP__*/ |
258 | #endif /* __SMP__*/ |
258 | 259 |