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