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1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
510 | jermar | 29 | #include <main/kinit.h> |
30 | #include <main/uinit.h> |
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1 | jermar | 31 | #include <config.h> |
32 | #include <arch.h> |
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33 | #include <proc/scheduler.h> |
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34 | #include <proc/task.h> |
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35 | #include <proc/thread.h> |
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36 | #include <panic.h> |
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37 | #include <func.h> |
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38 | #include <cpu.h> |
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39 | #include <arch/asm.h> |
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40 | #include <mm/page.h> |
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41 | #include <arch/mm/page.h> |
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703 | jermar | 42 | #include <mm/as.h> |
517 | jermar | 43 | #include <mm/frame.h> |
195 | vana | 44 | #include <print.h> |
236 | jermar | 45 | #include <memstr.h> |
517 | jermar | 46 | #include <console/console.h> |
578 | palkovsky | 47 | #include <interrupt.h> |
518 | jermar | 48 | #include <console/kconsole.h> |
1 | jermar | 49 | |
458 | decky | 50 | #ifdef CONFIG_SMP |
34 | jermar | 51 | #include <arch/smp/mps.h> |
458 | decky | 52 | #endif /* CONFIG_SMP */ |
1 | jermar | 53 | |
54 | #include <synch/waitq.h> |
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55 | #include <synch/spinlock.h> |
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56 | |||
459 | decky | 57 | #ifdef CONFIG_TEST |
1 | jermar | 58 | #include <test.h> |
459 | decky | 59 | #endif /* CONFIG_TEST */ |
1 | jermar | 60 | |
523 | jermar | 61 | /** Kernel initialization thread. |
62 | * |
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63 | * kinit takes care of higher level kernel |
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64 | * initialization (i.e. thread creation, |
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65 | * userspace initialization etc.). |
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66 | * |
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67 | * @param arg Not used. |
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68 | */ |
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1 | jermar | 69 | void kinit(void *arg) |
70 | { |
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625 | palkovsky | 71 | thread_t *t; |
703 | jermar | 72 | as_t *as; |
73 | as_area_t *a; |
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718 | decky | 74 | index_t frame, frames; |
75 | index_t pfn; |
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1 | jermar | 76 | task_t *u; |
77 | |||
413 | jermar | 78 | interrupts_disable(); |
1 | jermar | 79 | |
458 | decky | 80 | #ifdef CONFIG_SMP |
1 | jermar | 81 | if (config.cpu_count > 1) { |
82 | /* |
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83 | * Create the kmp thread and wait for its completion. |
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84 | * cpu1 through cpuN-1 will come up consecutively and |
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430 | jermar | 85 | * not mess together with kcpulb threads. |
1 | jermar | 86 | * Just a beautification. |
87 | */ |
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615 | palkovsky | 88 | if ((t = thread_create(kmp, NULL, TASK, 0))) { |
1 | jermar | 89 | spinlock_lock(&t->lock); |
90 | t->flags |= X_WIRED; |
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91 | t->cpu = &cpus[0]; |
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92 | spinlock_unlock(&t->lock); |
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93 | thread_ready(t); |
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94 | waitq_sleep(&kmp_completion_wq); |
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95 | } |
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510 | jermar | 96 | else panic("thread_create/kmp\n"); |
1 | jermar | 97 | } |
458 | decky | 98 | #endif /* CONFIG_SMP */ |
1 | jermar | 99 | /* |
100 | * Now that all CPUs are up, we can report what we've found. |
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101 | */ |
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673 | jermar | 102 | cpu_list(); |
1 | jermar | 103 | |
458 | decky | 104 | #ifdef CONFIG_SMP |
1 | jermar | 105 | if (config.cpu_count > 1) { |
673 | jermar | 106 | int i; |
107 | |||
125 | jermar | 108 | /* |
1 | jermar | 109 | * For each CPU, create its load balancing thread. |
110 | */ |
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111 | for (i = 0; i < config.cpu_count; i++) { |
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112 | |||
615 | palkovsky | 113 | if ((t = thread_create(kcpulb, NULL, TASK, 0))) { |
1 | jermar | 114 | spinlock_lock(&t->lock); |
115 | t->flags |= X_WIRED; |
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116 | t->cpu = &cpus[i]; |
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117 | spinlock_unlock(&t->lock); |
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118 | thread_ready(t); |
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119 | } |
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510 | jermar | 120 | else panic("thread_create/kcpulb\n"); |
1 | jermar | 121 | |
122 | } |
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123 | } |
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458 | decky | 124 | #endif /* CONFIG_SMP */ |
1 | jermar | 125 | |
510 | jermar | 126 | /* |
512 | jermar | 127 | * At this point SMP, if present, is configured. |
128 | */ |
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129 | arch_post_smp_init(); |
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130 | |||
131 | /* |
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510 | jermar | 132 | * Create kernel console. |
133 | */ |
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615 | palkovsky | 134 | if ((t = thread_create(kconsole, "kconsole", TASK, 0))) |
510 | jermar | 135 | thread_ready(t); |
718 | decky | 136 | else |
137 | panic("thread_create/kconsole\n"); |
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510 | jermar | 138 | |
413 | jermar | 139 | interrupts_enable(); |
1 | jermar | 140 | |
717 | decky | 141 | if (config.init_size > 0) { |
142 | /* |
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143 | * Create the first user task. |
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144 | */ |
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718 | decky | 145 | |
146 | if (KA2PA(config.init_addr) % FRAME_SIZE) |
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147 | panic("config.init_addr is not frame aligned"); |
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148 | |||
717 | decky | 149 | as = as_create(NULL); |
150 | if (!as) |
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151 | panic("as_create\n"); |
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152 | u = task_create(as); |
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153 | if (!u) |
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154 | panic("task_create\n"); |
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155 | t = thread_create(uinit, NULL, u, THREAD_USER_STACK); |
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156 | if (!t) |
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157 | panic("thread_create\n"); |
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158 | |||
159 | /* |
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160 | * Create the text as_area and copy the userspace code there. |
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718 | decky | 161 | */ |
162 | |||
163 | frame = KA2PA(config.init_addr) / FRAME_SIZE; |
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164 | frames = config.init_size / FRAME_SIZE; |
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165 | if (config.init_size % FRAME_SIZE > 0) |
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166 | frames++; |
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167 | |||
168 | a = as_area_create(as, AS_AREA_TEXT, frames, UTEXT_ADDRESS); |
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717 | decky | 169 | if (!a) |
170 | panic("as_area_create: text\n"); |
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171 | |||
718 | decky | 172 | for (pfn = 0; pfn < frames; pfn++) |
173 | as_area_set_mapping(a, pfn, frame + pfn); |
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703 | jermar | 174 | |
717 | decky | 175 | /* |
176 | * Create the data as_area. |
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177 | */ |
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178 | a = as_area_create(as, AS_AREA_STACK, 1, USTACK_ADDRESS); |
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179 | if (!a) |
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180 | panic("as_area_create: stack\n"); |
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1 | jermar | 181 | |
717 | decky | 182 | thread_ready(t); |
183 | } |
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1 | jermar | 184 | |
459 | decky | 185 | #ifdef CONFIG_TEST |
1 | jermar | 186 | test(); |
459 | decky | 187 | #endif /* CONFIG_TEST */ |
1 | jermar | 188 | |
517 | jermar | 189 | if (!stdin) { |
190 | while (1) { |
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191 | thread_sleep(1); |
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192 | printf("kinit... "); |
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193 | } |
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1 | jermar | 194 | } |
195 | |||
196 | } |