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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 | |||
1248 | jermar | 29 | /** |
30 | * @file kinit.c |
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31 | * @brief Kernel initialization thread. |
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32 | * |
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33 | * This file contains kinit kernel thread which carries out |
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34 | * high level system initialization. |
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35 | * |
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36 | * This file is responsible for finishing SMP configuration |
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37 | * and creation of userspace init tasks. |
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38 | */ |
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39 | |||
510 | jermar | 40 | #include <main/kinit.h> |
1 | jermar | 41 | #include <config.h> |
42 | #include <arch.h> |
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43 | #include <proc/scheduler.h> |
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44 | #include <proc/task.h> |
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45 | #include <proc/thread.h> |
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46 | #include <panic.h> |
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47 | #include <func.h> |
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48 | #include <cpu.h> |
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49 | #include <arch/asm.h> |
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50 | #include <mm/page.h> |
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51 | #include <arch/mm/page.h> |
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703 | jermar | 52 | #include <mm/as.h> |
517 | jermar | 53 | #include <mm/frame.h> |
195 | vana | 54 | #include <print.h> |
236 | jermar | 55 | #include <memstr.h> |
517 | jermar | 56 | #include <console/console.h> |
578 | palkovsky | 57 | #include <interrupt.h> |
518 | jermar | 58 | #include <console/kconsole.h> |
1174 | jermar | 59 | #include <security/cap.h> |
1 | jermar | 60 | |
458 | decky | 61 | #ifdef CONFIG_SMP |
34 | jermar | 62 | #include <arch/smp/mps.h> |
458 | decky | 63 | #endif /* CONFIG_SMP */ |
1 | jermar | 64 | |
65 | #include <synch/waitq.h> |
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66 | #include <synch/spinlock.h> |
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67 | |||
459 | decky | 68 | #ifdef CONFIG_TEST |
1 | jermar | 69 | #include <test.h> |
459 | decky | 70 | #endif /* CONFIG_TEST */ |
1 | jermar | 71 | |
523 | jermar | 72 | /** Kernel initialization thread. |
73 | * |
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74 | * kinit takes care of higher level kernel |
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75 | * initialization (i.e. thread creation, |
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76 | * userspace initialization etc.). |
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77 | * |
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78 | * @param arg Not used. |
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79 | */ |
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1 | jermar | 80 | void kinit(void *arg) |
81 | { |
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625 | palkovsky | 82 | thread_t *t; |
1027 | palkovsky | 83 | task_t *utask; |
1 | jermar | 84 | |
413 | jermar | 85 | interrupts_disable(); |
1 | jermar | 86 | |
458 | decky | 87 | #ifdef CONFIG_SMP |
1 | jermar | 88 | if (config.cpu_count > 1) { |
89 | /* |
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90 | * Create the kmp thread and wait for its completion. |
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91 | * cpu1 through cpuN-1 will come up consecutively and |
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430 | jermar | 92 | * not mess together with kcpulb threads. |
1 | jermar | 93 | * Just a beautification. |
94 | */ |
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1062 | jermar | 95 | if ((t = thread_create(kmp, NULL, TASK, 0, "kmp"))) { |
1 | jermar | 96 | spinlock_lock(&t->lock); |
97 | t->flags |= X_WIRED; |
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98 | t->cpu = &cpus[0]; |
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99 | spinlock_unlock(&t->lock); |
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100 | thread_ready(t); |
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101 | waitq_sleep(&kmp_completion_wq); |
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102 | } |
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510 | jermar | 103 | else panic("thread_create/kmp\n"); |
1 | jermar | 104 | } |
458 | decky | 105 | #endif /* CONFIG_SMP */ |
1 | jermar | 106 | /* |
107 | * Now that all CPUs are up, we can report what we've found. |
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108 | */ |
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673 | jermar | 109 | cpu_list(); |
1 | jermar | 110 | |
458 | decky | 111 | #ifdef CONFIG_SMP |
1 | jermar | 112 | if (config.cpu_count > 1) { |
673 | jermar | 113 | int i; |
114 | |||
125 | jermar | 115 | /* |
1 | jermar | 116 | * For each CPU, create its load balancing thread. |
117 | */ |
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118 | for (i = 0; i < config.cpu_count; i++) { |
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119 | |||
1062 | jermar | 120 | if ((t = thread_create(kcpulb, NULL, TASK, 0, "kcpulb"))) { |
1 | jermar | 121 | spinlock_lock(&t->lock); |
122 | t->flags |= X_WIRED; |
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123 | t->cpu = &cpus[i]; |
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124 | spinlock_unlock(&t->lock); |
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125 | thread_ready(t); |
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126 | } |
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510 | jermar | 127 | else panic("thread_create/kcpulb\n"); |
1 | jermar | 128 | |
129 | } |
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130 | } |
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458 | decky | 131 | #endif /* CONFIG_SMP */ |
1 | jermar | 132 | |
510 | jermar | 133 | /* |
512 | jermar | 134 | * At this point SMP, if present, is configured. |
135 | */ |
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136 | arch_post_smp_init(); |
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137 | |||
138 | /* |
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510 | jermar | 139 | * Create kernel console. |
140 | */ |
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1062 | jermar | 141 | if ((t = thread_create(kconsole, "kconsole", TASK, 0, "kconsole"))) |
510 | jermar | 142 | thread_ready(t); |
718 | decky | 143 | else |
144 | panic("thread_create/kconsole\n"); |
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510 | jermar | 145 | |
413 | jermar | 146 | interrupts_enable(); |
1037 | decky | 147 | |
148 | count_t i; |
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149 | for (i = 0; i < init.cnt; i++) { |
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717 | decky | 150 | /* |
1037 | decky | 151 | * Run user tasks. |
717 | decky | 152 | */ |
718 | decky | 153 | |
1037 | decky | 154 | if (init.tasks[i].addr % FRAME_SIZE) |
155 | panic("init[%d].addr is not frame aligned", i); |
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794 | palkovsky | 156 | |
1062 | jermar | 157 | utask = task_run_program((void *) init.tasks[i].addr, "USPACE"); |
1040 | palkovsky | 158 | if (utask) { |
1174 | jermar | 159 | /* |
160 | * Set capabilities to init userspace tasks. |
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161 | */ |
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1341 | cejka | 162 | cap_set(utask, CAP_CAP | CAP_MEM_MANAGER | CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG); |
1174 | jermar | 163 | |
1040 | palkovsky | 164 | if (!ipc_phone_0) |
165 | ipc_phone_0 = &utask->answerbox; |
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166 | } else |
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1196 | cejka | 167 | printf("Init task %zd not started.\n", i); |
717 | decky | 168 | } |
1 | jermar | 169 | |
459 | decky | 170 | #ifdef CONFIG_TEST |
1 | jermar | 171 | test(); |
459 | decky | 172 | #endif /* CONFIG_TEST */ |
1 | jermar | 173 | |
517 | jermar | 174 | if (!stdin) { |
175 | while (1) { |
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176 | thread_sleep(1); |
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177 | printf("kinit... "); |
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178 | } |
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1 | jermar | 179 | } |
180 | |||
181 | } |