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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 | |||
29 | #include <config.h> |
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30 | #include <arch.h> |
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31 | #include <main/kinit.h> |
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32 | #include <main/uinit.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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195 | vana | 43 | #include <print.h> |
236 | jermar | 44 | #include <memstr.h> |
1 | jermar | 45 | |
46 | #ifdef __SMP__ |
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34 | jermar | 47 | #include <arch/smp/mps.h> |
1 | jermar | 48 | #endif /* __SMP__ */ |
49 | |||
50 | #include <synch/waitq.h> |
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51 | #include <synch/spinlock.h> |
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52 | |||
53 | #ifdef __TEST__ |
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54 | #include <test.h> |
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55 | #endif /* __TEST__ */ |
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56 | |||
391 | jermar | 57 | #include <mm/frame.h> |
58 | |||
1 | jermar | 59 | void kinit(void *arg) |
60 | { |
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61 | vm_t *m; |
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62 | vm_area_t *a; |
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63 | task_t *u; |
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64 | thread_t *t; |
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65 | int i; |
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66 | |||
413 | jermar | 67 | interrupts_disable(); |
1 | jermar | 68 | |
69 | #ifdef __SMP__ |
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70 | if (config.cpu_count > 1) { |
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71 | /* |
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72 | * Create the kmp thread and wait for its completion. |
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73 | * cpu1 through cpuN-1 will come up consecutively and |
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430 | jermar | 74 | * not mess together with kcpulb threads. |
1 | jermar | 75 | * Just a beautification. |
76 | */ |
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15 | jermar | 77 | if (t = thread_create(kmp, NULL, TASK, 0)) { |
1 | jermar | 78 | spinlock_lock(&t->lock); |
79 | t->flags |= X_WIRED; |
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80 | t->cpu = &cpus[0]; |
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81 | spinlock_unlock(&t->lock); |
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82 | thread_ready(t); |
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83 | waitq_sleep(&kmp_completion_wq); |
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84 | } |
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85 | else panic("thread_create/kmp"); |
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86 | } |
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87 | #endif /* __SMP__ */ |
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88 | /* |
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89 | * Now that all CPUs are up, we can report what we've found. |
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90 | */ |
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32 | jermar | 91 | for (i = 0; i < config.cpu_count; i++) { |
28 | jermar | 92 | if (cpus[i].active) |
93 | cpu_print_report(&cpus[i]); |
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32 | jermar | 94 | else |
95 | printf("cpu%d: not active\n", i); |
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96 | } |
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1 | jermar | 97 | |
98 | #ifdef __SMP__ |
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99 | if (config.cpu_count > 1) { |
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125 | jermar | 100 | /* |
1 | jermar | 101 | * For each CPU, create its load balancing thread. |
102 | */ |
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103 | for (i = 0; i < config.cpu_count; i++) { |
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104 | |||
15 | jermar | 105 | if (t = thread_create(kcpulb, NULL, TASK, 0)) { |
1 | jermar | 106 | spinlock_lock(&t->lock); |
107 | t->flags |= X_WIRED; |
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108 | t->cpu = &cpus[i]; |
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109 | spinlock_unlock(&t->lock); |
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110 | thread_ready(t); |
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111 | } |
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112 | else panic("thread_create/kcpulb"); |
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113 | |||
114 | } |
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115 | } |
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116 | #endif /* __SMP__ */ |
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117 | |||
413 | jermar | 118 | interrupts_enable(); |
1 | jermar | 119 | |
34 | jermar | 120 | #ifdef __USERSPACE__ |
1 | jermar | 121 | /* |
122 | * Create the first user task. |
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123 | */ |
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167 | jermar | 124 | m = vm_create(NULL); |
68 | decky | 125 | if (!m) panic("vm_create"); |
1 | jermar | 126 | u = task_create(m); |
68 | decky | 127 | if (!u) panic("task_create"); |
1 | jermar | 128 | t = thread_create(uinit, NULL, u, THREAD_USER_STACK); |
68 | decky | 129 | if (!t) panic("thread_create"); |
1 | jermar | 130 | |
131 | /* |
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132 | * Create the text vm_area and copy the userspace code there. |
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133 | */ |
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134 | a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS); |
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68 | decky | 135 | if (!a) panic("vm_area_create: vm_text"); |
167 | jermar | 136 | vm_area_map(a, m); |
205 | jermar | 137 | memcpy((void *) PA2KA(a->mapping[0]), (void *) utext, utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE); |
1 | jermar | 138 | |
139 | /* |
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140 | * Create the data vm_area. |
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141 | */ |
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142 | a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS); |
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68 | decky | 143 | if (!a) panic("vm_area_create: vm_stack"); |
167 | jermar | 144 | vm_area_map(a, m); |
1 | jermar | 145 | |
146 | thread_ready(t); |
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34 | jermar | 147 | #endif /* __USERSPACE__ */ |
1 | jermar | 148 | |
149 | #ifdef __TEST__ |
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150 | test(); |
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151 | #endif /* __TEST__ */ |
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152 | |||
153 | |||
154 | while (1) { |
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155 | thread_usleep(1000000); |
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156 | printf("kinit... "); |
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157 | } |
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158 | |||
159 | } |