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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> |
1 | jermar | 30 | #include <config.h> |
31 | #include <arch.h> |
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32 | #include <proc/scheduler.h> |
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33 | #include <proc/task.h> |
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34 | #include <proc/thread.h> |
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35 | #include <panic.h> |
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36 | #include <func.h> |
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37 | #include <cpu.h> |
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38 | #include <arch/asm.h> |
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39 | #include <mm/page.h> |
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40 | #include <arch/mm/page.h> |
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703 | jermar | 41 | #include <mm/as.h> |
517 | jermar | 42 | #include <mm/frame.h> |
195 | vana | 43 | #include <print.h> |
236 | jermar | 44 | #include <memstr.h> |
517 | jermar | 45 | #include <console/console.h> |
578 | palkovsky | 46 | #include <interrupt.h> |
518 | jermar | 47 | #include <console/kconsole.h> |
1 | jermar | 48 | |
458 | decky | 49 | #ifdef CONFIG_SMP |
34 | jermar | 50 | #include <arch/smp/mps.h> |
458 | decky | 51 | #endif /* CONFIG_SMP */ |
1 | jermar | 52 | |
53 | #include <synch/waitq.h> |
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54 | #include <synch/spinlock.h> |
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55 | |||
459 | decky | 56 | #ifdef CONFIG_TEST |
1 | jermar | 57 | #include <test.h> |
459 | decky | 58 | #endif /* CONFIG_TEST */ |
1 | jermar | 59 | |
523 | jermar | 60 | /** Kernel initialization thread. |
61 | * |
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62 | * kinit takes care of higher level kernel |
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63 | * initialization (i.e. thread creation, |
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64 | * userspace initialization etc.). |
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65 | * |
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66 | * @param arg Not used. |
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67 | */ |
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1 | jermar | 68 | void kinit(void *arg) |
69 | { |
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625 | palkovsky | 70 | thread_t *t; |
1027 | palkovsky | 71 | task_t *utask; |
1 | jermar | 72 | |
413 | jermar | 73 | interrupts_disable(); |
1 | jermar | 74 | |
458 | decky | 75 | #ifdef CONFIG_SMP |
1 | jermar | 76 | if (config.cpu_count > 1) { |
77 | /* |
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78 | * Create the kmp thread and wait for its completion. |
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79 | * cpu1 through cpuN-1 will come up consecutively and |
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430 | jermar | 80 | * not mess together with kcpulb threads. |
1 | jermar | 81 | * Just a beautification. |
82 | */ |
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615 | palkovsky | 83 | if ((t = thread_create(kmp, NULL, TASK, 0))) { |
1 | jermar | 84 | spinlock_lock(&t->lock); |
85 | t->flags |= X_WIRED; |
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86 | t->cpu = &cpus[0]; |
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87 | spinlock_unlock(&t->lock); |
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88 | thread_ready(t); |
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89 | waitq_sleep(&kmp_completion_wq); |
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90 | } |
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510 | jermar | 91 | else panic("thread_create/kmp\n"); |
1 | jermar | 92 | } |
458 | decky | 93 | #endif /* CONFIG_SMP */ |
1 | jermar | 94 | /* |
95 | * Now that all CPUs are up, we can report what we've found. |
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96 | */ |
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673 | jermar | 97 | cpu_list(); |
1 | jermar | 98 | |
458 | decky | 99 | #ifdef CONFIG_SMP |
1 | jermar | 100 | if (config.cpu_count > 1) { |
673 | jermar | 101 | int i; |
102 | |||
125 | jermar | 103 | /* |
1 | jermar | 104 | * For each CPU, create its load balancing thread. |
105 | */ |
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106 | for (i = 0; i < config.cpu_count; i++) { |
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107 | |||
615 | palkovsky | 108 | if ((t = thread_create(kcpulb, NULL, TASK, 0))) { |
1 | jermar | 109 | spinlock_lock(&t->lock); |
110 | t->flags |= X_WIRED; |
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111 | t->cpu = &cpus[i]; |
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112 | spinlock_unlock(&t->lock); |
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113 | thread_ready(t); |
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114 | } |
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510 | jermar | 115 | else panic("thread_create/kcpulb\n"); |
1 | jermar | 116 | |
117 | } |
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118 | } |
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458 | decky | 119 | #endif /* CONFIG_SMP */ |
1 | jermar | 120 | |
510 | jermar | 121 | /* |
512 | jermar | 122 | * At this point SMP, if present, is configured. |
123 | */ |
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124 | arch_post_smp_init(); |
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125 | |||
126 | /* |
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510 | jermar | 127 | * Create kernel console. |
128 | */ |
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615 | palkovsky | 129 | if ((t = thread_create(kconsole, "kconsole", TASK, 0))) |
510 | jermar | 130 | thread_ready(t); |
718 | decky | 131 | else |
132 | panic("thread_create/kconsole\n"); |
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510 | jermar | 133 | |
413 | jermar | 134 | interrupts_enable(); |
1 | jermar | 135 | |
717 | decky | 136 | if (config.init_size > 0) { |
137 | /* |
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138 | * Create the first user task. |
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139 | */ |
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718 | decky | 140 | |
794 | palkovsky | 141 | if (config.init_addr % FRAME_SIZE) |
718 | decky | 142 | panic("config.init_addr is not frame aligned"); |
794 | palkovsky | 143 | |
1027 | palkovsky | 144 | utask = task_run_program((void *)config.init_addr); |
145 | if (utask) |
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146 | ipc_phone_0 = &utask->answerbox; |
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147 | else |
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973 | palkovsky | 148 | printf("Userspace not started.\n"); |
717 | decky | 149 | } |
1 | jermar | 150 | |
459 | decky | 151 | #ifdef CONFIG_TEST |
1 | jermar | 152 | test(); |
459 | decky | 153 | #endif /* CONFIG_TEST */ |
1 | jermar | 154 | |
517 | jermar | 155 | if (!stdin) { |
156 | while (1) { |
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157 | thread_sleep(1); |
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158 | printf("kinit... "); |
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159 | } |
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1 | jermar | 160 | } |
161 | |||
162 | } |