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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 <main/kinit.h> |
38 | #include <main/kinit.h> |
39 | #include <cpu.h> |
39 | #include <cpu.h> |
40 | #include <align.h> |
40 | #include <align.h> |
41 | 41 | ||
42 | #ifdef CONFIG_SMP |
42 | #ifdef CONFIG_SMP |
43 | #include <arch/smp/apic.h> |
43 | #include <arch/smp/apic.h> |
44 | #include <arch/smp/mps.h> |
44 | #include <arch/smp/mps.h> |
45 | #endif /* CONFIG_SMP */ |
45 | #endif /* CONFIG_SMP */ |
46 | 46 | ||
47 | #include <smp/smp.h> |
47 | #include <smp/smp.h> |
48 | 48 | ||
49 | #include <arch/mm/memory_init.h> |
49 | #include <arch/mm/memory_init.h> |
50 | #include <mm/heap.h> |
50 | #include <mm/heap.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 <mm/vm.h> |
54 | #include <mm/vm.h> |
55 | 55 | ||
56 | #include <synch/waitq.h> |
56 | #include <synch/waitq.h> |
57 | 57 | ||
58 | #include <arch/arch.h> |
58 | #include <arch/arch.h> |
59 | #include <arch.h> |
59 | #include <arch.h> |
60 | #include <arch/faddr.h> |
60 | #include <arch/faddr.h> |
61 | 61 | ||
62 | #include <typedefs.h> |
62 | #include <typedefs.h> |
63 | 63 | ||
64 | char *project = "SPARTAN kernel"; |
64 | char *project = "SPARTAN kernel"; |
65 | char *release = RELEASE " (" NAME ")"; |
65 | char *release = RELEASE " (" NAME ")"; |
66 | #ifdef TAG |
66 | #ifdef TAG |
67 | char *rr_delimiter = "\n"; |
67 | char *rr_delimiter = "\n"; |
68 | char *revision = TAG; |
68 | char *revision = TAG; |
69 | #else |
69 | #else |
70 | char *rr_delimiter = ""; |
70 | char *rr_delimiter = ""; |
71 | char *revision = ""; |
71 | char *revision = ""; |
72 | #endif |
72 | #endif |
73 | char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project"; |
73 | char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project"; |
74 | 74 | ||
75 | config_t config; |
75 | config_t config; |
76 | context_t ctx; |
76 | context_t ctx; |
77 | 77 | ||
78 | /* |
78 | /* |
79 | * These 'hardcoded' variables will be intialised by |
79 | * These 'hardcoded' variables will be intialised by |
80 | * the linker or the low level assembler code with |
80 | * the linker or the low level assembler code with |
81 | * appropriate sizes and addresses. |
81 | * appropriate sizes and addresses. |
82 | */ |
82 | */ |
83 | __address hardcoded_load_address = 0; |
83 | __address hardcoded_load_address = 0; |
84 | size_t hardcoded_ktext_size = 0; |
84 | size_t hardcoded_ktext_size = 0; |
85 | size_t hardcoded_kdata_size = 0; |
85 | size_t hardcoded_kdata_size = 0; |
86 | 86 | ||
87 | /* |
87 | /* |
88 | * Size of memory in bytes taken by kernel and heap. |
88 | * Size of memory in bytes taken by kernel and heap. |
89 | */ |
89 | */ |
90 | static size_t kernel_size; |
90 | static size_t kernel_size; |
91 | 91 | ||
92 | /* |
92 | /* |
93 | * Size of heap. |
93 | * Size of heap. |
94 | */ |
94 | */ |
95 | static size_t heap_size; |
95 | static size_t heap_size; |
96 | 96 | ||
97 | 97 | ||
98 | /* |
98 | /* |
99 | * Extra space between heap and stack |
99 | * Extra space between heap and stack |
100 | * enforced by alignment requirements. |
100 | * enforced by alignment requirements. |
101 | */ |
101 | */ |
102 | static size_t heap_delta; |
102 | static size_t heap_delta; |
103 | 103 | ||
104 | void main_bsp(void); |
104 | void main_bsp(void); |
105 | void main_ap(void); |
105 | void main_ap(void); |
106 | 106 | ||
107 | /* |
107 | /* |
108 | * These two functions prevent stack from underflowing during the |
108 | * These two functions prevent stack from underflowing during the |
109 | * kernel boot phase when SP is set to the very top of the reserved |
109 | * kernel boot phase when SP is set to the very top of the reserved |
110 | * space. The stack could get corrupted by a fooled compiler-generated |
110 | * space. The stack could get corrupted by a fooled compiler-generated |
111 | * pop sequence otherwise. |
111 | * pop sequence otherwise. |
112 | */ |
112 | */ |
113 | static void main_bsp_separated_stack(void); |
113 | static void main_bsp_separated_stack(void); |
114 | static void main_ap_separated_stack(void); |
114 | static void main_ap_separated_stack(void); |
115 | 115 | ||
116 | /** Bootstrap CPU main kernel routine |
116 | /** Bootstrap CPU main kernel routine |
117 | * |
117 | * |
118 | * Initializes the kernel by bootstrap CPU. |
118 | * Initializes the kernel by bootstrap CPU. |
119 | * |
119 | * |
120 | * Assuming interrupts_disable(). |
120 | * Assuming interrupts_disable(). |
121 | * |
121 | * |
122 | */ |
122 | */ |
123 | void main_bsp(void) |
123 | void main_bsp(void) |
124 | { |
124 | { |
125 | config.cpu_count = 1; |
125 | config.cpu_count = 1; |
126 | config.cpu_active = 1; |
126 | config.cpu_active = 1; |
127 | config.base = hardcoded_load_address; |
127 | config.base = hardcoded_load_address; |
128 | config.memory_size = get_memory_size(); |
128 | config.memory_size = get_memory_size(); |
129 | 129 | ||
130 | heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t); |
130 | heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t); |
131 | kernel_size = ALIGN(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE); |
131 | kernel_size = ALIGN(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE); |
132 | heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size); |
132 | heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size); |
133 | 133 | ||
134 | config.kernel_size = kernel_size + CONFIG_STACK_SIZE; |
134 | config.kernel_size = kernel_size + CONFIG_STACK_SIZE; |
135 | 135 | ||
136 | context_save(&ctx); |
136 | context_save(&ctx); |
137 | early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta); |
137 | early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta); |
138 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE); |
138 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE); |
139 | context_restore(&ctx); |
139 | context_restore(&ctx); |
140 | /* not reached */ |
140 | /* not reached */ |
141 | } |
141 | } |
142 | 142 | ||
143 | 143 | ||
144 | /** Bootstrap CPU main kernel routine stack wrapper |
144 | /** Bootstrap CPU main kernel routine stack wrapper |
145 | * |
145 | * |
146 | * Second part of main_bsp(). |
146 | * Second part of main_bsp(). |
147 | * |
147 | * |
148 | */ |
148 | */ |
149 | void main_bsp_separated_stack(void) |
149 | void main_bsp_separated_stack(void) |
150 | { |
150 | { |
151 | vm_t *m; |
151 | vm_t *m; |
152 | task_t *k; |
152 | task_t *k; |
153 | thread_t *t; |
153 | thread_t *t; |
154 | 154 | ||
155 | the_initialize(THE); |
155 | the_initialize(THE); |
156 | 156 | ||
157 | arch_pre_mm_init(); |
157 | arch_pre_mm_init(); |
158 | early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta); |
158 | early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta); |
159 | frame_init(); |
159 | frame_init(); |
160 | page_init(); |
160 | page_init(); |
161 | tlb_init(); |
161 | tlb_init(); |
162 | arch_post_mm_init(); |
162 | arch_post_mm_init(); |
163 | 163 | ||
164 | printf("%s, release %s%s%s\n%s\n", project, release, rr_delimiter, revision, copyright); |
164 | printf("%s, release %s%s%s\n%s\n", project, release, rr_delimiter, revision, copyright); |
165 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
165 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
166 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
166 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
167 | 167 | ||
168 | arch_late_init(); |
168 | arch_pre_smp_init(); |
169 | - | ||
170 | smp_init(); |
169 | smp_init(); |
- | 170 | arch_post_smp_init(); |
|
171 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
171 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
172 | printf("config.cpu_count=%d\n", config.cpu_count); |
172 | printf("config.cpu_count=%d\n", config.cpu_count); |
173 | 173 | ||
174 | cpu_init(); |
174 | cpu_init(); |
175 | 175 | ||
176 | calibrate_delay_loop(); |
176 | calibrate_delay_loop(); |
177 | 177 | ||
178 | timeout_init(); |
178 | timeout_init(); |
179 | scheduler_init(); |
179 | scheduler_init(); |
180 | task_init(); |
180 | task_init(); |
181 | thread_init(); |
181 | thread_init(); |
182 | 182 | ||
183 | /* |
183 | /* |
184 | * Create kernel vm mapping. |
184 | * Create kernel vm mapping. |
185 | */ |
185 | */ |
186 | m = vm_create(GET_PTL0_ADDRESS()); |
186 | m = vm_create(GET_PTL0_ADDRESS()); |
187 | if (!m) |
187 | if (!m) |
188 | panic("can't create kernel vm address space\n"); |
188 | panic("can't create kernel vm address space\n"); |
189 | 189 | ||
190 | /* |
190 | /* |
191 | * Create kernel task. |
191 | * Create kernel task. |
192 | */ |
192 | */ |
193 | k = task_create(m); |
193 | k = task_create(m); |
194 | if (!k) |
194 | if (!k) |
195 | panic("can't create kernel task\n"); |
195 | panic("can't create kernel task\n"); |
196 | 196 | ||
197 | /* |
197 | /* |
198 | * Create the first thread. |
198 | * Create the first thread. |
199 | */ |
199 | */ |
200 | t = thread_create(kinit, NULL, k, 0); |
200 | t = thread_create(kinit, NULL, k, 0); |
201 | if (!t) |
201 | if (!t) |
202 | panic("can't create kinit thread\n"); |
202 | panic("can't create kinit thread\n"); |
203 | thread_ready(t); |
203 | thread_ready(t); |
204 | /* |
204 | /* |
205 | * This call to scheduler() will return to kinit, |
205 | * This call to scheduler() will return to kinit, |
206 | * starting the thread of kernel threads. |
206 | * starting the thread of kernel threads. |
207 | */ |
207 | */ |
208 | scheduler(); |
208 | scheduler(); |
209 | /* not reached */ |
209 | /* not reached */ |
210 | } |
210 | } |
211 | 211 | ||
212 | 212 | ||
213 | #ifdef CONFIG_SMP |
213 | #ifdef CONFIG_SMP |
214 | /** Application CPUs main kernel routine |
214 | /** Application CPUs main kernel routine |
215 | * |
215 | * |
216 | * Executed by application processors, temporary stack |
216 | * Executed by application processors, temporary stack |
217 | * is at ctx.sp which was set during BP boot. |
217 | * is at ctx.sp which was set during BP boot. |
218 | * |
218 | * |
219 | * Assuming interrupts_disable()'d. |
219 | * Assuming interrupts_disable()'d. |
220 | * |
220 | * |
221 | */ |
221 | */ |
222 | void main_ap(void) |
222 | void main_ap(void) |
223 | { |
223 | { |
224 | /* |
224 | /* |
225 | * Incrementing the active CPU counter will guarantee that the |
225 | * Incrementing the active CPU counter will guarantee that the |
226 | * pm_init() will not attempt to build GDT and IDT tables again. |
226 | * pm_init() will not attempt to build GDT and IDT tables again. |
227 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
227 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
228 | * will do. |
228 | * will do. |
229 | */ |
229 | */ |
230 | config.cpu_active++; |
230 | config.cpu_active++; |
231 | 231 | ||
232 | /* |
232 | /* |
233 | * The THE structure is well defined because ctx.sp is used as stack. |
233 | * The THE structure is well defined because ctx.sp is used as stack. |
234 | */ |
234 | */ |
235 | the_initialize(THE); |
235 | the_initialize(THE); |
236 | 236 | ||
237 | arch_pre_mm_init(); |
237 | arch_pre_mm_init(); |
238 | frame_init(); |
238 | frame_init(); |
239 | page_init(); |
239 | page_init(); |
240 | tlb_init(); |
240 | tlb_init(); |
241 | arch_post_mm_init(); |
241 | arch_post_mm_init(); |
242 | 242 | ||
243 | cpu_init(); |
243 | cpu_init(); |
244 | 244 | ||
245 | calibrate_delay_loop(); |
245 | calibrate_delay_loop(); |
246 | 246 | ||
247 | l_apic_init(); |
247 | l_apic_init(); |
248 | l_apic_debug(); |
248 | l_apic_debug(); |
249 | 249 | ||
250 | the_copy(THE, (the_t *) CPU->stack); |
250 | the_copy(THE, (the_t *) CPU->stack); |
251 | 251 | ||
252 | /* |
252 | /* |
253 | * If we woke kmp up before we left the kernel stack, we could |
253 | * If we woke kmp up before we left the kernel stack, we could |
254 | * collide with another CPU coming up. To prevent this, we |
254 | * collide with another CPU coming up. To prevent this, we |
255 | * switch to this cpu's private stack prior to waking kmp up. |
255 | * switch to this cpu's private stack prior to waking kmp up. |
256 | */ |
256 | */ |
257 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
257 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
258 | context_restore(&CPU->saved_context); |
258 | context_restore(&CPU->saved_context); |
259 | /* not reached */ |
259 | /* not reached */ |
260 | } |
260 | } |
261 | 261 | ||
262 | 262 | ||
263 | /** Application CPUs main kernel routine stack wrapper |
263 | /** Application CPUs main kernel routine stack wrapper |
264 | * |
264 | * |
265 | * Second part of main_ap(). |
265 | * Second part of main_ap(). |
266 | * |
266 | * |
267 | */ |
267 | */ |
268 | void main_ap_separated_stack(void) |
268 | void main_ap_separated_stack(void) |
269 | { |
269 | { |
270 | /* |
270 | /* |
271 | * Configure timeouts for this cpu. |
271 | * Configure timeouts for this cpu. |
272 | */ |
272 | */ |
273 | timeout_init(); |
273 | timeout_init(); |
274 | 274 | ||
275 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
275 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
276 | scheduler(); |
276 | scheduler(); |
277 | /* not reached */ |
277 | /* not reached */ |
278 | } |
278 | } |
279 | #endif /* CONFIG_SMP */ |
279 | #endif /* CONFIG_SMP */ |
280 | 280 |