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1 | jermar | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
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 | |||
1729 | decky | 29 | /** @addtogroup main |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | |||
1248 | jermar | 33 | /** |
1702 | cejka | 34 | * @file |
1248 | jermar | 35 | * @brief Kernel initialization thread. |
36 | * |
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37 | * This file contains kinit kernel thread which carries out |
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38 | * high level system initialization. |
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39 | * |
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40 | * This file is responsible for finishing SMP configuration |
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41 | * and creation of userspace init tasks. |
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42 | */ |
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43 | |||
510 | jermar | 44 | #include <main/kinit.h> |
1 | jermar | 45 | #include <config.h> |
46 | #include <arch.h> |
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47 | #include <proc/scheduler.h> |
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48 | #include <proc/task.h> |
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49 | #include <proc/thread.h> |
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3222 | svoboda | 50 | #include <proc/program.h> |
1 | jermar | 51 | #include <panic.h> |
52 | #include <func.h> |
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53 | #include <cpu.h> |
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54 | #include <arch/asm.h> |
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55 | #include <mm/page.h> |
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56 | #include <arch/mm/page.h> |
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703 | jermar | 57 | #include <mm/as.h> |
517 | jermar | 58 | #include <mm/frame.h> |
195 | vana | 59 | #include <print.h> |
236 | jermar | 60 | #include <memstr.h> |
517 | jermar | 61 | #include <console/console.h> |
578 | palkovsky | 62 | #include <interrupt.h> |
518 | jermar | 63 | #include <console/kconsole.h> |
1174 | jermar | 64 | #include <security/cap.h> |
2000 | decky | 65 | #include <lib/rd.h> |
2089 | decky | 66 | #include <ipc/ipc.h> |
1 | jermar | 67 | |
458 | decky | 68 | #ifdef CONFIG_SMP |
1901 | jermar | 69 | #include <smp/smp.h> |
458 | decky | 70 | #endif /* CONFIG_SMP */ |
1 | jermar | 71 | |
72 | #include <synch/waitq.h> |
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73 | #include <synch/spinlock.h> |
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74 | |||
523 | jermar | 75 | /** Kernel initialization thread. |
76 | * |
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77 | * kinit takes care of higher level kernel |
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78 | * initialization (i.e. thread creation, |
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79 | * userspace initialization etc.). |
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80 | * |
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81 | * @param arg Not used. |
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82 | */ |
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1 | jermar | 83 | void kinit(void *arg) |
84 | { |
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625 | palkovsky | 85 | thread_t *t; |
1 | jermar | 86 | |
1576 | jermar | 87 | /* |
88 | * Detach kinit as nobody will call thread_join_timeout() on it. |
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89 | */ |
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90 | thread_detach(THREAD); |
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91 | |||
413 | jermar | 92 | interrupts_disable(); |
1 | jermar | 93 | |
458 | decky | 94 | #ifdef CONFIG_SMP |
1 | jermar | 95 | if (config.cpu_count > 1) { |
1901 | jermar | 96 | waitq_initialize(&ap_completion_wq); |
1 | jermar | 97 | /* |
98 | * Create the kmp thread and wait for its completion. |
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99 | * cpu1 through cpuN-1 will come up consecutively and |
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430 | jermar | 100 | * not mess together with kcpulb threads. |
1 | jermar | 101 | * Just a beautification. |
102 | */ |
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2087 | jermar | 103 | if ((t = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, |
104 | "kmp", true))) { |
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1 | jermar | 105 | spinlock_lock(&t->lock); |
106 | t->cpu = &cpus[0]; |
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107 | spinlock_unlock(&t->lock); |
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108 | thread_ready(t); |
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1729 | decky | 109 | } else |
1576 | jermar | 110 | panic("thread_create/kmp\n"); |
111 | thread_join(t); |
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1581 | jermar | 112 | thread_detach(t); |
1 | jermar | 113 | } |
458 | decky | 114 | #endif /* CONFIG_SMP */ |
1 | jermar | 115 | /* |
116 | * Now that all CPUs are up, we can report what we've found. |
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117 | */ |
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673 | jermar | 118 | cpu_list(); |
1 | jermar | 119 | |
458 | decky | 120 | #ifdef CONFIG_SMP |
1 | jermar | 121 | if (config.cpu_count > 1) { |
2223 | decky | 122 | count_t i; |
673 | jermar | 123 | |
125 | jermar | 124 | /* |
1 | jermar | 125 | * For each CPU, create its load balancing thread. |
126 | */ |
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127 | for (i = 0; i < config.cpu_count; i++) { |
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128 | |||
2087 | jermar | 129 | if ((t = thread_create(kcpulb, NULL, TASK, |
130 | THREAD_FLAG_WIRED, "kcpulb", true))) { |
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1 | jermar | 131 | spinlock_lock(&t->lock); |
132 | t->cpu = &cpus[i]; |
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133 | spinlock_unlock(&t->lock); |
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134 | thread_ready(t); |
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1729 | decky | 135 | } else |
136 | panic("thread_create/kcpulb\n"); |
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1 | jermar | 137 | |
138 | } |
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139 | } |
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458 | decky | 140 | #endif /* CONFIG_SMP */ |
1 | jermar | 141 | |
510 | jermar | 142 | /* |
512 | jermar | 143 | * At this point SMP, if present, is configured. |
144 | */ |
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145 | arch_post_smp_init(); |
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146 | |||
147 | /* |
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510 | jermar | 148 | * Create kernel console. |
149 | */ |
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3181 | jermar | 150 | t = thread_create(kconsole, (void *) "kconsole", TASK, 0, "kconsole", |
151 | false); |
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2087 | jermar | 152 | if (t) |
510 | jermar | 153 | thread_ready(t); |
718 | decky | 154 | else |
155 | panic("thread_create/kconsole\n"); |
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510 | jermar | 156 | |
413 | jermar | 157 | interrupts_enable(); |
3549 | rimsky | 158 | |
3060 | decky | 159 | /* |
160 | * Create user tasks, load RAM disk images. |
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161 | */ |
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1037 | decky | 162 | count_t i; |
3222 | svoboda | 163 | program_t programs[CONFIG_INIT_TASKS]; |
3060 | decky | 164 | |
1037 | decky | 165 | for (i = 0; i < init.cnt; i++) { |
1999 | decky | 166 | if (init.tasks[i].addr % FRAME_SIZE) { |
3060 | decky | 167 | printf("init[%" PRIc "].addr is not frame aligned", i); |
1999 | decky | 168 | continue; |
169 | } |
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794 | palkovsky | 170 | |
3222 | svoboda | 171 | int rc = program_create_from_image((void *) init.tasks[i].addr, |
3593 | rimsky | 172 | "init-bin", &programs[i]); |
3222 | svoboda | 173 | |
174 | if (rc == 0 && programs[i].task != NULL) { |
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1174 | jermar | 175 | /* |
176 | * Set capabilities to init userspace tasks. |
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177 | */ |
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3222 | svoboda | 178 | cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER | |
2087 | jermar | 179 | CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG); |
1174 | jermar | 180 | |
3060 | decky | 181 | if (!ipc_phone_0) |
3222 | svoboda | 182 | ipc_phone_0 = &programs[i].task->answerbox; |
183 | } else if (rc == 0) { |
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184 | /* It was the program loader and was registered */ |
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1999 | decky | 185 | } else { |
3222 | svoboda | 186 | /* RAM disk image */ |
3029 | decky | 187 | int rd = init_rd((rd_header_t *) init.tasks[i].addr, |
2087 | jermar | 188 | init.tasks[i].size); |
1999 | decky | 189 | |
2002 | decky | 190 | if (rd != RE_OK) |
3181 | jermar | 191 | printf("Init binary %" PRIc " not used, error " |
192 | "code %d.\n", i, rd); |
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1999 | decky | 193 | } |
717 | decky | 194 | } |
3060 | decky | 195 | |
196 | /* |
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197 | * Run user tasks with reasonable delays |
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198 | */ |
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199 | for (i = 0; i < init.cnt; i++) { |
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3222 | svoboda | 200 | if (programs[i].task != NULL) { |
3060 | decky | 201 | thread_usleep(50000); |
3222 | svoboda | 202 | program_ready(&programs[i]); |
3060 | decky | 203 | } |
204 | } |
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1 | jermar | 205 | |
517 | jermar | 206 | if (!stdin) { |
207 | while (1) { |
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208 | thread_sleep(1); |
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209 | printf("kinit... "); |
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210 | } |
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1 | jermar | 211 | } |
212 | } |
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1702 | cejka | 213 | |
1729 | decky | 214 | /** @} |
1702 | cejka | 215 | */ |