Rev 1101 | Rev 1138 | 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> |
561 | decky | 33 | #include <debug.h> |
1 | jermar | 34 | #include <config.h> |
35 | #include <time/clock.h> |
||
36 | #include <proc/scheduler.h> |
||
37 | #include <proc/thread.h> |
||
38 | #include <proc/task.h> |
||
39 | #include <main/kinit.h> |
||
675 | jermar | 40 | #include <main/version.h> |
518 | jermar | 41 | #include <console/kconsole.h> |
1 | jermar | 42 | #include <cpu.h> |
402 | jermar | 43 | #include <align.h> |
578 | palkovsky | 44 | #include <interrupt.h> |
146 | cejka | 45 | #include <arch/mm/memory_init.h> |
1 | jermar | 46 | #include <mm/frame.h> |
47 | #include <mm/page.h> |
||
684 | jermar | 48 | #include <genarch/mm/page_pt.h> |
5 | jermar | 49 | #include <mm/tlb.h> |
703 | jermar | 50 | #include <mm/as.h> |
759 | palkovsky | 51 | #include <mm/slab.h> |
1 | jermar | 52 | #include <synch/waitq.h> |
1109 | jermar | 53 | #include <synch/futex.h> |
210 | decky | 54 | #include <arch/arch.h> |
1 | jermar | 55 | #include <arch.h> |
76 | jermar | 56 | #include <arch/faddr.h> |
106 | jermar | 57 | #include <typedefs.h> |
955 | palkovsky | 58 | #include <ipc/ipc.h> |
1063 | palkovsky | 59 | #include <macros.h> |
106 | jermar | 60 | |
675 | jermar | 61 | #ifdef CONFIG_SMP |
62 | #include <arch/smp/apic.h> |
||
63 | #include <arch/smp/mps.h> |
||
64 | #endif /* CONFIG_SMP */ |
||
65 | #include <smp/smp.h> |
||
66 | |||
67 | config_t config; /**< Global configuration structure. */ |
||
1109 | jermar | 68 | init_t init = {0}; /**< Initial user-space tasks */ |
675 | jermar | 69 | |
1 | jermar | 70 | context_t ctx; |
71 | |||
523 | jermar | 72 | /** |
73 | * These 'hardcoded' variables will be intialized by |
||
105 | jermar | 74 | * the linker or the low level assembler code with |
75 | * appropriate sizes and addresses. |
||
1 | jermar | 76 | */ |
37 | jermar | 77 | __address hardcoded_load_address = 0; |
106 | jermar | 78 | size_t hardcoded_ktext_size = 0; |
79 | size_t hardcoded_kdata_size = 0; |
||
1 | jermar | 80 | |
81 | void main_bsp(void); |
||
82 | void main_ap(void); |
||
83 | |||
84 | /* |
||
85 | * These two functions prevent stack from underflowing during the |
||
86 | * kernel boot phase when SP is set to the very top of the reserved |
||
87 | * space. The stack could get corrupted by a fooled compiler-generated |
||
88 | * pop sequence otherwise. |
||
89 | */ |
||
90 | static void main_bsp_separated_stack(void); |
||
625 | palkovsky | 91 | #ifdef CONFIG_SMP |
1 | jermar | 92 | static void main_ap_separated_stack(void); |
625 | palkovsky | 93 | #endif |
1 | jermar | 94 | |
108 | decky | 95 | /** Bootstrap CPU main kernel routine |
96 | * |
||
97 | * Initializes the kernel by bootstrap CPU. |
||
675 | jermar | 98 | * This function passes control directly to |
99 | * main_bsp_separated_stack(). |
||
108 | decky | 100 | * |
413 | jermar | 101 | * Assuming interrupts_disable(). |
108 | decky | 102 | * |
1 | jermar | 103 | */ |
104 | void main_bsp(void) |
||
105 | { |
||
814 | palkovsky | 106 | __address stackaddr; |
107 | |||
1 | jermar | 108 | config.cpu_count = 1; |
109 | config.cpu_active = 1; |
||
651 | decky | 110 | |
369 | jermar | 111 | config.base = hardcoded_load_address; |
112 | config.memory_size = get_memory_size(); |
||
210 | decky | 113 | |
814 | palkovsky | 114 | config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE); |
115 | stackaddr = config.base + config.kernel_size; |
||
1037 | decky | 116 | |
814 | palkovsky | 117 | /* Avoid placing kernel on top of init */ |
1037 | decky | 118 | count_t i; |
119 | bool overlap = false; |
||
120 | for (i = 0; i < init.cnt; i++) |
||
1063 | palkovsky | 121 | if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) { |
1037 | decky | 122 | stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE); |
123 | init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE; |
||
124 | overlap = true; |
||
125 | } |
||
126 | |||
127 | if (!overlap) |
||
814 | palkovsky | 128 | config.kernel_size += CONFIG_STACK_SIZE; |
210 | decky | 129 | |
47 | jermar | 130 | context_save(&ctx); |
814 | palkovsky | 131 | context_set(&ctx, FADDR(main_bsp_separated_stack), |
132 | stackaddr, CONFIG_STACK_SIZE); |
||
47 | jermar | 133 | context_restore(&ctx); |
1 | jermar | 134 | /* not reached */ |
135 | } |
||
136 | |||
108 | decky | 137 | |
138 | /** Bootstrap CPU main kernel routine stack wrapper |
||
139 | * |
||
140 | * Second part of main_bsp(). |
||
141 | * |
||
142 | */ |
||
174 | jermar | 143 | void main_bsp_separated_stack(void) |
144 | { |
||
1 | jermar | 145 | task_t *k; |
146 | thread_t *t; |
||
1109 | jermar | 147 | count_t i; |
207 | decky | 148 | |
184 | jermar | 149 | the_initialize(THE); |
1109 | jermar | 150 | |
517 | jermar | 151 | /* |
152 | * kconsole data structures must be initialized very early |
||
153 | * because other subsystems will register their respective |
||
154 | * commands. |
||
155 | */ |
||
156 | kconsole_init(); |
||
1037 | decky | 157 | |
756 | jermar | 158 | /* |
159 | * Exception handler initialization, before architecture |
||
673 | jermar | 160 | * starts adding its own handlers |
578 | palkovsky | 161 | */ |
162 | exc_init(); |
||
755 | jermar | 163 | |
164 | /* |
||
165 | * Memory management subsystems initialization. |
||
166 | */ |
||
26 | jermar | 167 | arch_pre_mm_init(); |
1101 | jermar | 168 | frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */ |
789 | palkovsky | 169 | slab_cache_init(); |
756 | jermar | 170 | as_init(); |
23 | jermar | 171 | page_init(); |
172 | tlb_init(); |
||
814 | palkovsky | 173 | arch_post_mm_init(); |
1101 | jermar | 174 | |
673 | jermar | 175 | version_print(); |
77 | jermar | 176 | printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n", |
1 | jermar | 177 | config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024); |
178 | |||
503 | jermar | 179 | arch_pre_smp_init(); |
34 | jermar | 180 | smp_init(); |
1101 | jermar | 181 | |
182 | slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */ |
||
773 | palkovsky | 183 | |
149 | jermar | 184 | printf("config.memory_size=%dM\n", config.memory_size/(1024*1024)); |
27 | jermar | 185 | printf("config.cpu_count=%d\n", config.cpu_count); |
1 | jermar | 186 | cpu_init(); |
860 | decky | 187 | |
1 | jermar | 188 | calibrate_delay_loop(); |
189 | timeout_init(); |
||
190 | scheduler_init(); |
||
191 | task_init(); |
||
192 | thread_init(); |
||
1109 | jermar | 193 | futex_init(); |
628 | decky | 194 | |
1037 | decky | 195 | for (i = 0; i < init.cnt; i++) |
196 | printf("init[%d].addr=%P, init[%d].size=%d\n", i, init.tasks[i].addr, i, init.tasks[i].size); |
||
955 | palkovsky | 197 | |
198 | ipc_init(); |
||
1109 | jermar | 199 | |
1 | jermar | 200 | /* |
201 | * Create kernel task. |
||
202 | */ |
||
1062 | jermar | 203 | k = task_create(AS_KERNEL, "KERNEL"); |
210 | decky | 204 | if (!k) |
205 | panic("can't create kernel task\n"); |
||
860 | decky | 206 | |
1 | jermar | 207 | /* |
208 | * Create the first thread. |
||
209 | */ |
||
1062 | jermar | 210 | t = thread_create(kinit, NULL, k, 0, "kinit"); |
210 | decky | 211 | if (!t) |
212 | panic("can't create kinit thread\n"); |
||
1 | jermar | 213 | thread_ready(t); |
860 | decky | 214 | |
1 | jermar | 215 | /* |
216 | * This call to scheduler() will return to kinit, |
||
217 | * starting the thread of kernel threads. |
||
218 | */ |
||
219 | scheduler(); |
||
220 | /* not reached */ |
||
221 | } |
||
222 | |||
108 | decky | 223 | |
458 | decky | 224 | #ifdef CONFIG_SMP |
108 | decky | 225 | /** Application CPUs main kernel routine |
226 | * |
||
227 | * Executed by application processors, temporary stack |
||
228 | * is at ctx.sp which was set during BP boot. |
||
675 | jermar | 229 | * This function passes control directly to |
230 | * main_ap_separated_stack(). |
||
108 | decky | 231 | * |
413 | jermar | 232 | * Assuming interrupts_disable()'d. |
108 | decky | 233 | * |
1 | jermar | 234 | */ |
235 | void main_ap(void) |
||
236 | { |
||
237 | /* |
||
238 | * Incrementing the active CPU counter will guarantee that the |
||
239 | * pm_init() will not attempt to build GDT and IDT tables again. |
||
240 | * Neither frame_init() will do the complete thing. Neither cpu_init() |
||
241 | * will do. |
||
242 | */ |
||
243 | config.cpu_active++; |
||
244 | |||
192 | jermar | 245 | /* |
246 | * The THE structure is well defined because ctx.sp is used as stack. |
||
247 | */ |
||
248 | the_initialize(THE); |
||
298 | decky | 249 | |
26 | jermar | 250 | arch_pre_mm_init(); |
1 | jermar | 251 | frame_init(); |
252 | page_init(); |
||
389 | jermar | 253 | tlb_init(); |
26 | jermar | 254 | arch_post_mm_init(); |
298 | decky | 255 | |
1 | jermar | 256 | cpu_init(); |
298 | decky | 257 | |
1 | jermar | 258 | calibrate_delay_loop(); |
259 | |||
260 | l_apic_init(); |
||
261 | l_apic_debug(); |
||
262 | |||
192 | jermar | 263 | the_copy(THE, (the_t *) CPU->stack); |
1 | jermar | 264 | |
265 | /* |
||
266 | * If we woke kmp up before we left the kernel stack, we could |
||
267 | * collide with another CPU coming up. To prevent this, we |
||
268 | * switch to this cpu's private stack prior to waking kmp up. |
||
269 | */ |
||
414 | jermar | 270 | context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE); |
47 | jermar | 271 | context_restore(&CPU->saved_context); |
1 | jermar | 272 | /* not reached */ |
273 | } |
||
274 | |||
108 | decky | 275 | |
276 | /** Application CPUs main kernel routine stack wrapper |
||
277 | * |
||
278 | * Second part of main_ap(). |
||
279 | * |
||
280 | */ |
||
1 | jermar | 281 | void main_ap_separated_stack(void) |
282 | { |
||
283 | /* |
||
284 | * Configure timeouts for this cpu. |
||
285 | */ |
||
286 | timeout_init(); |
||
287 | |||
288 | waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST); |
||
289 | scheduler(); |
||
290 | /* not reached */ |
||
291 | } |
||
458 | decky | 292 | #endif /* CONFIG_SMP */ |