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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/kconsole.h> |
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31 | #include <main/uinit.h> |
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1 | jermar | 32 | #include <config.h> |
33 | #include <arch.h> |
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34 | #include <proc/scheduler.h> |
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35 | #include <proc/task.h> |
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36 | #include <proc/thread.h> |
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37 | #include <panic.h> |
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38 | #include <func.h> |
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39 | #include <cpu.h> |
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40 | #include <arch/asm.h> |
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41 | #include <mm/page.h> |
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42 | #include <arch/mm/page.h> |
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43 | #include <mm/vm.h> |
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517 | jermar | 44 | #include <mm/frame.h> |
195 | vana | 45 | #include <print.h> |
236 | jermar | 46 | #include <memstr.h> |
517 | jermar | 47 | #include <console/console.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 | |
391 | jermar | 60 | |
517 | jermar | 61 | |
1 | jermar | 62 | void kinit(void *arg) |
63 | { |
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64 | vm_t *m; |
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65 | vm_area_t *a; |
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66 | task_t *u; |
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67 | thread_t *t; |
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68 | int i; |
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69 | |||
413 | jermar | 70 | interrupts_disable(); |
1 | jermar | 71 | |
458 | decky | 72 | #ifdef CONFIG_SMP |
1 | jermar | 73 | if (config.cpu_count > 1) { |
74 | /* |
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75 | * Create the kmp thread and wait for its completion. |
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76 | * cpu1 through cpuN-1 will come up consecutively and |
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430 | jermar | 77 | * not mess together with kcpulb threads. |
1 | jermar | 78 | * Just a beautification. |
79 | */ |
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15 | jermar | 80 | if (t = thread_create(kmp, NULL, TASK, 0)) { |
1 | jermar | 81 | spinlock_lock(&t->lock); |
82 | t->flags |= X_WIRED; |
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83 | t->cpu = &cpus[0]; |
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84 | spinlock_unlock(&t->lock); |
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85 | thread_ready(t); |
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86 | waitq_sleep(&kmp_completion_wq); |
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87 | } |
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510 | jermar | 88 | else panic("thread_create/kmp\n"); |
1 | jermar | 89 | } |
458 | decky | 90 | #endif /* CONFIG_SMP */ |
1 | jermar | 91 | /* |
92 | * Now that all CPUs are up, we can report what we've found. |
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93 | */ |
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32 | jermar | 94 | for (i = 0; i < config.cpu_count; i++) { |
28 | jermar | 95 | if (cpus[i].active) |
96 | cpu_print_report(&cpus[i]); |
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32 | jermar | 97 | else |
98 | printf("cpu%d: not active\n", i); |
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99 | } |
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1 | jermar | 100 | |
458 | decky | 101 | #ifdef CONFIG_SMP |
1 | jermar | 102 | if (config.cpu_count > 1) { |
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 | |||
15 | jermar | 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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129 | if (t = thread_create(kconsole, NULL, TASK, 0)) |
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130 | thread_ready(t); |
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131 | else panic("thread_create/kconsole\n"); |
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132 | |||
413 | jermar | 133 | interrupts_enable(); |
1 | jermar | 134 | |
459 | decky | 135 | #ifdef CONFIG_USERSPACE |
1 | jermar | 136 | /* |
137 | * Create the first user task. |
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138 | */ |
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167 | jermar | 139 | m = vm_create(NULL); |
452 | decky | 140 | if (!m) |
510 | jermar | 141 | panic("vm_create\n"); |
1 | jermar | 142 | u = task_create(m); |
452 | decky | 143 | if (!u) |
510 | jermar | 144 | panic("task_create\n"); |
1 | jermar | 145 | t = thread_create(uinit, NULL, u, THREAD_USER_STACK); |
452 | decky | 146 | if (!t) |
510 | jermar | 147 | panic("thread_create\n"); |
1 | jermar | 148 | |
149 | /* |
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150 | * Create the text vm_area and copy the userspace code there. |
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151 | */ |
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152 | a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS); |
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452 | decky | 153 | if (!a) |
510 | jermar | 154 | panic("vm_area_create: vm_text\n"); |
167 | jermar | 155 | vm_area_map(a, m); |
205 | jermar | 156 | memcpy((void *) PA2KA(a->mapping[0]), (void *) utext, utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE); |
1 | jermar | 157 | |
158 | /* |
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159 | * Create the data vm_area. |
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160 | */ |
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161 | a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS); |
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452 | decky | 162 | if (!a) |
510 | jermar | 163 | panic("vm_area_create: vm_stack\n"); |
167 | jermar | 164 | vm_area_map(a, m); |
1 | jermar | 165 | |
166 | thread_ready(t); |
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459 | decky | 167 | #endif /* CONFIG_USERSPACE */ |
1 | jermar | 168 | |
459 | decky | 169 | #ifdef CONFIG_TEST |
1 | jermar | 170 | test(); |
459 | decky | 171 | #endif /* CONFIG_TEST */ |
1 | jermar | 172 | |
517 | jermar | 173 | if (!stdin) { |
174 | while (1) { |
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175 | thread_sleep(1); |
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176 | printf("kinit... "); |
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177 | } |
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1 | jermar | 178 | } |
179 | |||
180 | } |