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