Rev 430 | Rev 460 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
3 | * All rights reserved. |
||
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
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 |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
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 |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
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 |
||
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 |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
29 | #include <arch/asm.h> |
||
97 | jermar | 30 | #include <context.h> |
1 | jermar | 31 | #include <print.h> |
68 | decky | 32 | #include <panic.h> |
1 | jermar | 33 | #include <config.h> |
34 | #include <time/clock.h> |
||
35 | #include <proc/scheduler.h> |
||
36 | #include <proc/thread.h> |
||
37 | #include <proc/task.h> |
||
38 | #include <main/kinit.h> |
||
39 | #include <cpu.h> |
||
402 | jermar | 40 | #include <align.h> |
1 | jermar | 41 | |
458 | decky | 42 | #ifdef CONFIG_SMP |
11 | jermar | 43 | #include <arch/smp/apic.h> |
34 | jermar | 44 | #include <arch/smp/mps.h> |
458 | decky | 45 | #endif /* CONFIG_SMP */ |
1 | jermar | 46 | |
34 | jermar | 47 | #include <smp/smp.h> |
48 | |||
146 | cejka | 49 | #include <arch/mm/memory_init.h> |
373 | jermar | 50 | #include <mm/heap.h> |
1 | jermar | 51 | #include <mm/frame.h> |
52 | #include <mm/page.h> |
||
5 | jermar | 53 | #include <mm/tlb.h> |
373 | jermar | 54 | #include <mm/vm.h> |
55 | |||
1 | jermar | 56 | #include <synch/waitq.h> |
57 | |||
210 | decky | 58 | #include <arch/arch.h> |
1 | jermar | 59 | #include <arch.h> |
76 | jermar | 60 | #include <arch/faddr.h> |
1 | jermar | 61 | |
106 | jermar | 62 | #include <typedefs.h> |
63 | |||
1 | jermar | 64 | char *project = "SPARTAN kernel"; |
78 | jermar | 65 | char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project"; |
1 | jermar | 66 | |
67 | config_t config; |
||
68 | context_t ctx; |
||
69 | |||
70 | /* |
||
71 | * These 'hardcoded' variables will be intialised by |
||
105 | jermar | 72 | * the linker or the low level assembler code with |
73 | * appropriate sizes and addresses. |
||
1 | jermar | 74 | */ |
37 | jermar | 75 | __address hardcoded_load_address = 0; |
106 | jermar | 76 | size_t hardcoded_ktext_size = 0; |
77 | size_t hardcoded_kdata_size = 0; |
||
1 | jermar | 78 | |
180 | jermar | 79 | /* |
80 | * Size of memory in bytes taken by kernel and heap. |
||
81 | */ |
||
82 | static size_t kernel_size; |
||
83 | |||
84 | /* |
||
369 | jermar | 85 | * Size of heap. |
86 | */ |
||
87 | static size_t heap_size; |
||
88 | |||
402 | jermar | 89 | |
369 | jermar | 90 | /* |
402 | jermar | 91 | * Extra space between heap and stack |
92 | * enforced by alignment requirements. |
||
180 | jermar | 93 | */ |
94 | static size_t heap_delta; |
||
95 | |||
1 | jermar | 96 | void main_bsp(void); |
97 | void main_ap(void); |
||
98 | |||
99 | /* |
||
100 | * These two functions prevent stack from underflowing during the |
||
101 | * kernel boot phase when SP is set to the very top of the reserved |
||
102 | * space. The stack could get corrupted by a fooled compiler-generated |
||
103 | * pop sequence otherwise. |
||
104 | */ |
||
105 | static void main_bsp_separated_stack(void); |
||
106 | static void main_ap_separated_stack(void); |
||
107 | |||
108 | decky | 108 | /** Bootstrap CPU main kernel routine |
109 | * |
||
110 | * Initializes the kernel by bootstrap CPU. |
||
111 | * |
||
413 | jermar | 112 | * Assuming interrupts_disable(). |
108 | decky | 113 | * |
1 | jermar | 114 | */ |
115 | void main_bsp(void) |
||
116 | { |
||
117 | config.cpu_count = 1; |
||
118 | config.cpu_active = 1; |
||
369 | jermar | 119 | config.base = hardcoded_load_address; |
120 | config.memory_size = get_memory_size(); |
||
121 | |||
122 | heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t); |
||
402 | jermar | 123 | kernel_size = ALIGN(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE); |
124 | heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size); |
||
210 | decky | 125 | |
180 | jermar | 126 | config.kernel_size = kernel_size + CONFIG_STACK_SIZE; |
210 | decky | 127 | |
47 | jermar | 128 | context_save(&ctx); |
402 | jermar | 129 | early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta); |
180 | jermar | 130 | context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE); |
47 | jermar | 131 | context_restore(&ctx); |
1 | jermar | 132 | /* not reached */ |
133 | } |
||
134 | |||
108 | decky | 135 | |
136 | /** Bootstrap CPU main kernel routine stack wrapper |
||
137 | * |
||
138 | * Second part of main_bsp(). |
||
139 | * |
||
140 | */ |
||
174 | jermar | 141 | void main_bsp_separated_stack(void) |
142 | { |
||
1 | jermar | 143 | vm_t *m; |
144 | task_t *k; |
||
145 | thread_t *t; |
||
207 | decky | 146 | |
184 | jermar | 147 | the_initialize(THE); |
235 | decky | 148 | |
26 | jermar | 149 | arch_pre_mm_init(); |
374 | jermar | 150 | early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta); |
23 | jermar | 151 | frame_init(); |
152 | page_init(); |
||
153 | tlb_init(); |
||
154 | arch_post_mm_init(); |
||
155 | |||
71 | jermar | 156 | printf("%s\n%s\n", project, copyright); |
77 | jermar | 157 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
1 | jermar | 158 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
159 | |||
32 | jermar | 160 | arch_late_init(); |
27 | jermar | 161 | |
34 | jermar | 162 | smp_init(); |
149 | jermar | 163 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
27 | jermar | 164 | printf("config.cpu_count=%d\n", config.cpu_count); |
1 | jermar | 165 | |
166 | cpu_init(); |
||
220 | vana | 167 | |
1 | jermar | 168 | calibrate_delay_loop(); |
210 | decky | 169 | |
1 | jermar | 170 | timeout_init(); |
171 | scheduler_init(); |
||
172 | task_init(); |
||
173 | thread_init(); |
||
174 | |||
175 | /* |
||
176 | * Create kernel vm mapping. |
||
177 | */ |
||
167 | jermar | 178 | m = vm_create(GET_PTL0_ADDRESS()); |
210 | decky | 179 | if (!m) |
180 | panic("can't create kernel vm address space\n"); |
||
1 | jermar | 181 | |
182 | /* |
||
183 | * Create kernel task. |
||
184 | */ |
||
185 | k = task_create(m); |
||
210 | decky | 186 | if (!k) |
187 | panic("can't create kernel task\n"); |
||
188 | |||
1 | jermar | 189 | /* |
190 | * Create the first thread. |
||
191 | */ |
||
192 | t = thread_create(kinit, NULL, k, 0); |
||
210 | decky | 193 | if (!t) |
194 | panic("can't create kinit thread\n"); |
||
1 | jermar | 195 | thread_ready(t); |
196 | /* |
||
197 | * This call to scheduler() will return to kinit, |
||
198 | * starting the thread of kernel threads. |
||
199 | */ |
||
200 | scheduler(); |
||
201 | /* not reached */ |
||
202 | } |
||
203 | |||
108 | decky | 204 | |
458 | decky | 205 | #ifdef CONFIG_SMP |
108 | decky | 206 | /** Application CPUs main kernel routine |
207 | * |
||
208 | * Executed by application processors, temporary stack |
||
209 | * is at ctx.sp which was set during BP boot. |
||
210 | * |
||
413 | jermar | 211 | * Assuming interrupts_disable()'d. |
108 | decky | 212 | * |
1 | jermar | 213 | */ |
214 | void main_ap(void) |
||
215 | { |
||
216 | /* |
||
217 | * Incrementing the active CPU counter will guarantee that the |
||
218 | * pm_init() will not attempt to build GDT and IDT tables again. |
||
219 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
||
220 | * will do. |
||
221 | */ |
||
222 | config.cpu_active++; |
||
223 | |||
192 | jermar | 224 | /* |
225 | * The THE structure is well defined because ctx.sp is used as stack. |
||
226 | */ |
||
227 | the_initialize(THE); |
||
298 | decky | 228 | |
26 | jermar | 229 | arch_pre_mm_init(); |
1 | jermar | 230 | frame_init(); |
231 | page_init(); |
||
389 | jermar | 232 | tlb_init(); |
26 | jermar | 233 | arch_post_mm_init(); |
298 | decky | 234 | |
1 | jermar | 235 | cpu_init(); |
298 | decky | 236 | |
1 | jermar | 237 | calibrate_delay_loop(); |
238 | |||
239 | l_apic_init(); |
||
240 | l_apic_debug(); |
||
241 | |||
192 | jermar | 242 | the_copy(THE, (the_t *) CPU->stack); |
1 | jermar | 243 | |
244 | /* |
||
245 | * If we woke kmp up before we left the kernel stack, we could |
||
246 | * collide with another CPU coming up. To prevent this, we |
||
247 | * switch to this cpu's private stack prior to waking kmp up. |
||
248 | */ |
||
414 | jermar | 249 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
47 | jermar | 250 | context_restore(&CPU->saved_context); |
1 | jermar | 251 | /* not reached */ |
252 | } |
||
253 | |||
108 | decky | 254 | |
255 | /** Application CPUs main kernel routine stack wrapper |
||
256 | * |
||
257 | * Second part of main_ap(). |
||
258 | * |
||
259 | */ |
||
1 | jermar | 260 | void main_ap_separated_stack(void) |
261 | { |
||
262 | /* |
||
263 | * Configure timeouts for this cpu. |
||
264 | */ |
||
265 | timeout_init(); |
||
266 | |||
267 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
||
268 | scheduler(); |
||
269 | /* not reached */ |
||
270 | } |
||
458 | decky | 271 | #endif /* CONFIG_SMP */ |