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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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42 | #include <mm/vm.h> |
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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> |
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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70 | vm_t *m; |
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71 | vm_area_t *a; |
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72 | task_t *u; |
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73 | thread_t *t; |
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74 | int i; |
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75 | |||
413 | jermar | 76 | interrupts_disable(); |
1 | jermar | 77 | |
458 | decky | 78 | #ifdef CONFIG_SMP |
1 | jermar | 79 | if (config.cpu_count > 1) { |
80 | /* |
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81 | * Create the kmp thread and wait for its completion. |
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82 | * cpu1 through cpuN-1 will come up consecutively and |
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430 | jermar | 83 | * not mess together with kcpulb threads. |
1 | jermar | 84 | * Just a beautification. |
85 | */ |
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15 | jermar | 86 | if (t = thread_create(kmp, NULL, TASK, 0)) { |
1 | jermar | 87 | spinlock_lock(&t->lock); |
88 | t->flags |= X_WIRED; |
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89 | t->cpu = &cpus[0]; |
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90 | spinlock_unlock(&t->lock); |
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91 | thread_ready(t); |
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92 | waitq_sleep(&kmp_completion_wq); |
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93 | } |
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510 | jermar | 94 | else panic("thread_create/kmp\n"); |
1 | jermar | 95 | } |
458 | decky | 96 | #endif /* CONFIG_SMP */ |
1 | jermar | 97 | /* |
98 | * Now that all CPUs are up, we can report what we've found. |
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99 | */ |
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32 | jermar | 100 | for (i = 0; i < config.cpu_count; i++) { |
28 | jermar | 101 | if (cpus[i].active) |
102 | cpu_print_report(&cpus[i]); |
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32 | jermar | 103 | else |
104 | printf("cpu%d: not active\n", i); |
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105 | } |
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1 | jermar | 106 | |
458 | decky | 107 | #ifdef CONFIG_SMP |
1 | jermar | 108 | if (config.cpu_count > 1) { |
125 | jermar | 109 | /* |
1 | jermar | 110 | * For each CPU, create its load balancing thread. |
111 | */ |
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112 | for (i = 0; i < config.cpu_count; i++) { |
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113 | |||
15 | jermar | 114 | if (t = thread_create(kcpulb, NULL, TASK, 0)) { |
1 | jermar | 115 | spinlock_lock(&t->lock); |
116 | t->flags |= X_WIRED; |
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117 | t->cpu = &cpus[i]; |
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118 | spinlock_unlock(&t->lock); |
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119 | thread_ready(t); |
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120 | } |
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510 | jermar | 121 | else panic("thread_create/kcpulb\n"); |
1 | jermar | 122 | |
123 | } |
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124 | } |
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458 | decky | 125 | #endif /* CONFIG_SMP */ |
1 | jermar | 126 | |
510 | jermar | 127 | /* |
512 | jermar | 128 | * At this point SMP, if present, is configured. |
129 | */ |
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130 | arch_post_smp_init(); |
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131 | |||
132 | /* |
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510 | jermar | 133 | * Create kernel console. |
134 | */ |
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135 | if (t = thread_create(kconsole, NULL, TASK, 0)) |
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136 | thread_ready(t); |
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137 | else panic("thread_create/kconsole\n"); |
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138 | |||
413 | jermar | 139 | interrupts_enable(); |
1 | jermar | 140 | |
459 | decky | 141 | #ifdef CONFIG_USERSPACE |
1 | jermar | 142 | /* |
143 | * Create the first user task. |
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144 | */ |
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167 | jermar | 145 | m = vm_create(NULL); |
452 | decky | 146 | if (!m) |
510 | jermar | 147 | panic("vm_create\n"); |
1 | jermar | 148 | u = task_create(m); |
452 | decky | 149 | if (!u) |
510 | jermar | 150 | panic("task_create\n"); |
1 | jermar | 151 | t = thread_create(uinit, NULL, u, THREAD_USER_STACK); |
452 | decky | 152 | if (!t) |
510 | jermar | 153 | panic("thread_create\n"); |
1 | jermar | 154 | |
155 | /* |
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156 | * Create the text vm_area and copy the userspace code there. |
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157 | */ |
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158 | a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS); |
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452 | decky | 159 | if (!a) |
510 | jermar | 160 | panic("vm_area_create: vm_text\n"); |
167 | jermar | 161 | vm_area_map(a, m); |
205 | jermar | 162 | memcpy((void *) PA2KA(a->mapping[0]), (void *) utext, utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE); |
1 | jermar | 163 | |
164 | /* |
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165 | * Create the data vm_area. |
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166 | */ |
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167 | a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS); |
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452 | decky | 168 | if (!a) |
510 | jermar | 169 | panic("vm_area_create: vm_stack\n"); |
167 | jermar | 170 | vm_area_map(a, m); |
1 | jermar | 171 | |
172 | thread_ready(t); |
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459 | decky | 173 | #endif /* CONFIG_USERSPACE */ |
1 | jermar | 174 | |
459 | decky | 175 | #ifdef CONFIG_TEST |
1 | jermar | 176 | test(); |
459 | decky | 177 | #endif /* CONFIG_TEST */ |
1 | jermar | 178 | |
517 | jermar | 179 | if (!stdin) { |
180 | while (1) { |
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181 | thread_sleep(1); |
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182 | printf("kinit... "); |
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183 | } |
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1 | jermar | 184 | } |
185 | |||
186 | } |