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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 <debug.h> |
33 | #include <debug.h> |
34 | #include <config.h> |
34 | #include <config.h> |
35 | #include <time/clock.h> |
35 | #include <time/clock.h> |
36 | #include <proc/scheduler.h> |
36 | #include <proc/scheduler.h> |
37 | #include <proc/thread.h> |
37 | #include <proc/thread.h> |
38 | #include <proc/task.h> |
38 | #include <proc/task.h> |
39 | #include <main/kinit.h> |
39 | #include <main/kinit.h> |
- | 40 | #include <main/version.h> |
|
40 | #include <console/kconsole.h> |
41 | #include <console/kconsole.h> |
41 | #include <cpu.h> |
42 | #include <cpu.h> |
42 | #include <align.h> |
43 | #include <align.h> |
43 | #include <interrupt.h> |
44 | #include <interrupt.h> |
44 | #include <main/version.h> |
- | |
45 | - | ||
46 | #ifdef CONFIG_SMP |
- | |
47 | #include <arch/smp/apic.h> |
- | |
48 | #include <arch/smp/mps.h> |
- | |
49 | #endif /* CONFIG_SMP */ |
- | |
50 | - | ||
51 | #include <smp/smp.h> |
- | |
52 | - | ||
53 | #include <arch/mm/memory_init.h> |
45 | #include <arch/mm/memory_init.h> |
54 | #include <mm/heap.h> |
46 | #include <mm/heap.h> |
55 | #include <mm/frame.h> |
47 | #include <mm/frame.h> |
56 | #include <mm/page.h> |
48 | #include <mm/page.h> |
57 | #include <mm/tlb.h> |
49 | #include <mm/tlb.h> |
58 | #include <mm/vm.h> |
50 | #include <mm/vm.h> |
59 | - | ||
60 | #include <synch/waitq.h> |
51 | #include <synch/waitq.h> |
61 | - | ||
62 | #include <arch/arch.h> |
52 | #include <arch/arch.h> |
63 | #include <arch.h> |
53 | #include <arch.h> |
64 | #include <arch/faddr.h> |
54 | #include <arch/faddr.h> |
65 | - | ||
66 | #include <typedefs.h> |
55 | #include <typedefs.h> |
67 | 56 | ||
- | 57 | #ifdef CONFIG_SMP |
|
- | 58 | #include <arch/smp/apic.h> |
|
- | 59 | #include <arch/smp/mps.h> |
|
- | 60 | #endif /* CONFIG_SMP */ |
|
68 | config_t config; |
61 | #include <smp/smp.h> |
- | 62 | ||
- | 63 | config_t config; /**< Global configuration structure. */ |
|
- | 64 | ||
69 | context_t ctx; |
65 | context_t ctx; |
70 | 66 | ||
71 | /** |
67 | /** |
72 | * These 'hardcoded' variables will be intialized by |
68 | * These 'hardcoded' variables will be intialized by |
73 | * the linker or the low level assembler code with |
69 | * the linker or the low level assembler code with |
74 | * appropriate sizes and addresses. |
70 | * appropriate sizes and addresses. |
75 | */ |
71 | */ |
76 | __address hardcoded_load_address = 0; |
72 | __address hardcoded_load_address = 0; |
77 | size_t hardcoded_ktext_size = 0; |
73 | size_t hardcoded_ktext_size = 0; |
78 | size_t hardcoded_kdata_size = 0; |
74 | size_t hardcoded_kdata_size = 0; |
79 | 75 | ||
80 | __address init_addr = 0; |
76 | __address init_addr = 0; |
81 | size_t init_size = 0; |
77 | size_t init_size = 0; |
82 | 78 | ||
83 | void main_bsp(void); |
79 | void main_bsp(void); |
84 | void main_ap(void); |
80 | void main_ap(void); |
85 | 81 | ||
86 | /* |
82 | /* |
87 | * These two functions prevent stack from underflowing during the |
83 | * These two functions prevent stack from underflowing during the |
88 | * kernel boot phase when SP is set to the very top of the reserved |
84 | * kernel boot phase when SP is set to the very top of the reserved |
89 | * space. The stack could get corrupted by a fooled compiler-generated |
85 | * space. The stack could get corrupted by a fooled compiler-generated |
90 | * pop sequence otherwise. |
86 | * pop sequence otherwise. |
91 | */ |
87 | */ |
92 | static void main_bsp_separated_stack(void); |
88 | static void main_bsp_separated_stack(void); |
93 | #ifdef CONFIG_SMP |
89 | #ifdef CONFIG_SMP |
94 | static void main_ap_separated_stack(void); |
90 | static void main_ap_separated_stack(void); |
95 | #endif |
91 | #endif |
96 | 92 | ||
97 | /** Bootstrap CPU main kernel routine |
93 | /** Bootstrap CPU main kernel routine |
98 | * |
94 | * |
99 | * Initializes the kernel by bootstrap CPU. |
95 | * Initializes the kernel by bootstrap CPU. |
- | 96 | * This function passes control directly to |
|
- | 97 | * main_bsp_separated_stack(). |
|
100 | * |
98 | * |
101 | * Assuming interrupts_disable(). |
99 | * Assuming interrupts_disable(). |
102 | * |
100 | * |
103 | */ |
101 | */ |
104 | void main_bsp(void) |
102 | void main_bsp(void) |
105 | { |
103 | { |
106 | config.cpu_count = 1; |
104 | config.cpu_count = 1; |
107 | config.cpu_active = 1; |
105 | config.cpu_active = 1; |
108 | 106 | ||
109 | config.base = hardcoded_load_address; |
107 | config.base = hardcoded_load_address; |
110 | config.memory_size = get_memory_size(); |
108 | config.memory_size = get_memory_size(); |
111 | config.init_addr = init_addr; |
109 | config.init_addr = init_addr; |
112 | config.init_size = init_size; |
110 | config.init_size = init_size; |
113 | 111 | ||
114 | if (init_size > 0) |
112 | if (init_size > 0) |
115 | config.heap_addr = init_addr + init_size; |
113 | config.heap_addr = init_addr + init_size; |
116 | else |
114 | else |
117 | config.heap_addr = hardcoded_load_address + hardcoded_ktext_size + hardcoded_kdata_size; |
115 | config.heap_addr = hardcoded_load_address + hardcoded_ktext_size + hardcoded_kdata_size; |
118 | 116 | ||
119 | config.heap_size = CONFIG_HEAP_SIZE + (config.memory_size / FRAME_SIZE) * sizeof(frame_t); |
117 | config.heap_size = CONFIG_HEAP_SIZE + (config.memory_size / FRAME_SIZE) * sizeof(frame_t); |
120 | 118 | ||
121 | config.kernel_size = ALIGN_UP(config.heap_addr - hardcoded_load_address + config.heap_size, PAGE_SIZE); |
119 | config.kernel_size = ALIGN_UP(config.heap_addr - hardcoded_load_address + config.heap_size, PAGE_SIZE); |
122 | config.heap_delta = config.kernel_size - (config.heap_addr - hardcoded_load_address + config.heap_size); |
120 | config.heap_delta = config.kernel_size - (config.heap_addr - hardcoded_load_address + config.heap_size); |
123 | config.kernel_size = config.kernel_size + CONFIG_STACK_SIZE; |
121 | config.kernel_size = config.kernel_size + CONFIG_STACK_SIZE; |
124 | 122 | ||
125 | context_save(&ctx); |
123 | context_save(&ctx); |
126 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + config.kernel_size, CONFIG_STACK_SIZE); |
124 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + config.kernel_size, CONFIG_STACK_SIZE); |
127 | context_restore(&ctx); |
125 | context_restore(&ctx); |
128 | /* not reached */ |
126 | /* not reached */ |
129 | } |
127 | } |
130 | 128 | ||
131 | 129 | ||
132 | /** Bootstrap CPU main kernel routine stack wrapper |
130 | /** Bootstrap CPU main kernel routine stack wrapper |
133 | * |
131 | * |
134 | * Second part of main_bsp(). |
132 | * Second part of main_bsp(). |
135 | * |
133 | * |
136 | */ |
134 | */ |
137 | void main_bsp_separated_stack(void) |
135 | void main_bsp_separated_stack(void) |
138 | { |
136 | { |
139 | vm_t *m; |
137 | vm_t *m; |
140 | task_t *k; |
138 | task_t *k; |
141 | thread_t *t; |
139 | thread_t *t; |
142 | 140 | ||
143 | the_initialize(THE); |
141 | the_initialize(THE); |
144 | 142 | ||
145 | /* |
143 | /* |
146 | * kconsole data structures must be initialized very early |
144 | * kconsole data structures must be initialized very early |
147 | * because other subsystems will register their respective |
145 | * because other subsystems will register their respective |
148 | * commands. |
146 | * commands. |
149 | */ |
147 | */ |
150 | kconsole_init(); |
148 | kconsole_init(); |
151 | 149 | ||
152 | /* Exception handler initialization, before architecture |
150 | /* Exception handler initialization, before architecture |
153 | * starts adding its own handlers |
151 | * starts adding its own handlers |
154 | */ |
152 | */ |
155 | exc_init(); |
153 | exc_init(); |
156 | 154 | ||
157 | arch_pre_mm_init(); |
155 | arch_pre_mm_init(); |
158 | early_heap_init(config.heap_addr, config.heap_size + config.heap_delta); |
156 | early_heap_init(config.heap_addr, config.heap_size + config.heap_delta); |
159 | frame_init(); |
157 | frame_init(); |
160 | page_init(); |
158 | page_init(); |
161 | tlb_init(); |
159 | tlb_init(); |
162 | arch_post_mm_init(); |
160 | arch_post_mm_init(); |
163 | 161 | ||
164 | version_print(); |
162 | version_print(); |
165 | 163 | ||
166 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
164 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
167 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
165 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
168 | 166 | ||
169 | arch_pre_smp_init(); |
167 | arch_pre_smp_init(); |
170 | smp_init(); |
168 | smp_init(); |
171 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
169 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
172 | printf("config.cpu_count=%d\n", config.cpu_count); |
170 | printf("config.cpu_count=%d\n", config.cpu_count); |
173 | 171 | ||
174 | cpu_init(); |
172 | cpu_init(); |
175 | 173 | ||
176 | calibrate_delay_loop(); |
174 | calibrate_delay_loop(); |
177 | 175 | ||
178 | timeout_init(); |
176 | timeout_init(); |
179 | scheduler_init(); |
177 | scheduler_init(); |
180 | task_init(); |
178 | task_init(); |
181 | thread_init(); |
179 | thread_init(); |
182 | 180 | ||
183 | if (config.init_size > 0) |
181 | if (config.init_size > 0) |
184 | printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size); |
182 | printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size); |
185 | 183 | ||
186 | /* |
184 | /* |
187 | * Create kernel vm mapping. |
185 | * Create kernel vm mapping. |
188 | */ |
186 | */ |
189 | m = vm_create(GET_PTL0_ADDRESS()); |
187 | m = vm_create(GET_PTL0_ADDRESS()); |
190 | if (!m) |
188 | if (!m) |
191 | panic("can't create kernel vm address space\n"); |
189 | panic("can't create kernel vm address space\n"); |
192 | 190 | ||
193 | /* |
191 | /* |
194 | * Create kernel task. |
192 | * Create kernel task. |
195 | */ |
193 | */ |
196 | k = task_create(m); |
194 | k = task_create(m); |
197 | if (!k) |
195 | if (!k) |
198 | panic("can't create kernel task\n"); |
196 | panic("can't create kernel task\n"); |
199 | 197 | ||
200 | /* |
198 | /* |
201 | * Create the first thread. |
199 | * Create the first thread. |
202 | */ |
200 | */ |
203 | t = thread_create(kinit, NULL, k, 0); |
201 | t = thread_create(kinit, NULL, k, 0); |
204 | if (!t) |
202 | if (!t) |
205 | panic("can't create kinit thread\n"); |
203 | panic("can't create kinit thread\n"); |
206 | thread_ready(t); |
204 | thread_ready(t); |
- | 205 | ||
207 | /* |
206 | /* |
208 | * This call to scheduler() will return to kinit, |
207 | * This call to scheduler() will return to kinit, |
209 | * starting the thread of kernel threads. |
208 | * starting the thread of kernel threads. |
210 | */ |
209 | */ |
211 | scheduler(); |
210 | scheduler(); |
212 | /* not reached */ |
211 | /* not reached */ |
213 | } |
212 | } |
214 | 213 | ||
215 | 214 | ||
216 | #ifdef CONFIG_SMP |
215 | #ifdef CONFIG_SMP |
217 | /** Application CPUs main kernel routine |
216 | /** Application CPUs main kernel routine |
218 | * |
217 | * |
219 | * Executed by application processors, temporary stack |
218 | * Executed by application processors, temporary stack |
220 | * is at ctx.sp which was set during BP boot. |
219 | * is at ctx.sp which was set during BP boot. |
- | 220 | * This function passes control directly to |
|
- | 221 | * main_ap_separated_stack(). |
|
221 | * |
222 | * |
222 | * Assuming interrupts_disable()'d. |
223 | * Assuming interrupts_disable()'d. |
223 | * |
224 | * |
224 | */ |
225 | */ |
225 | void main_ap(void) |
226 | void main_ap(void) |
226 | { |
227 | { |
227 | /* |
228 | /* |
228 | * Incrementing the active CPU counter will guarantee that the |
229 | * Incrementing the active CPU counter will guarantee that the |
229 | * pm_init() will not attempt to build GDT and IDT tables again. |
230 | * pm_init() will not attempt to build GDT and IDT tables again. |
230 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
231 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
231 | * will do. |
232 | * will do. |
232 | */ |
233 | */ |
233 | config.cpu_active++; |
234 | config.cpu_active++; |
234 | 235 | ||
235 | /* |
236 | /* |
236 | * The THE structure is well defined because ctx.sp is used as stack. |
237 | * The THE structure is well defined because ctx.sp is used as stack. |
237 | */ |
238 | */ |
238 | the_initialize(THE); |
239 | the_initialize(THE); |
239 | 240 | ||
240 | arch_pre_mm_init(); |
241 | arch_pre_mm_init(); |
241 | frame_init(); |
242 | frame_init(); |
242 | page_init(); |
243 | page_init(); |
243 | tlb_init(); |
244 | tlb_init(); |
244 | arch_post_mm_init(); |
245 | arch_post_mm_init(); |
245 | 246 | ||
246 | cpu_init(); |
247 | cpu_init(); |
247 | 248 | ||
248 | calibrate_delay_loop(); |
249 | calibrate_delay_loop(); |
249 | 250 | ||
250 | l_apic_init(); |
251 | l_apic_init(); |
251 | l_apic_debug(); |
252 | l_apic_debug(); |
252 | 253 | ||
253 | the_copy(THE, (the_t *) CPU->stack); |
254 | the_copy(THE, (the_t *) CPU->stack); |
254 | 255 | ||
255 | /* |
256 | /* |
256 | * If we woke kmp up before we left the kernel stack, we could |
257 | * If we woke kmp up before we left the kernel stack, we could |
257 | * collide with another CPU coming up. To prevent this, we |
258 | * collide with another CPU coming up. To prevent this, we |
258 | * switch to this cpu's private stack prior to waking kmp up. |
259 | * switch to this cpu's private stack prior to waking kmp up. |
259 | */ |
260 | */ |
260 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
261 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
261 | context_restore(&CPU->saved_context); |
262 | context_restore(&CPU->saved_context); |
262 | /* not reached */ |
263 | /* not reached */ |
263 | } |
264 | } |
264 | 265 | ||
265 | 266 | ||
266 | /** Application CPUs main kernel routine stack wrapper |
267 | /** Application CPUs main kernel routine stack wrapper |
267 | * |
268 | * |
268 | * Second part of main_ap(). |
269 | * Second part of main_ap(). |
269 | * |
270 | * |
270 | */ |
271 | */ |
271 | void main_ap_separated_stack(void) |
272 | void main_ap_separated_stack(void) |
272 | { |
273 | { |
273 | /* |
274 | /* |
274 | * Configure timeouts for this cpu. |
275 | * Configure timeouts for this cpu. |
275 | */ |
276 | */ |
276 | timeout_init(); |
277 | timeout_init(); |
277 | 278 | ||
278 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
279 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
279 | scheduler(); |
280 | scheduler(); |
280 | /* not reached */ |
281 | /* not reached */ |
281 | } |
282 | } |
282 | #endif /* CONFIG_SMP */ |
283 | #endif /* CONFIG_SMP */ |
283 | 284 |