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