[f761f1eb] | 1 | /*
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[df4ed85] | 2 | * Copyright (c) 2001-2004 Jakub Jermar
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[f761f1eb] | 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 |
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[8e3bf3e2] | 29 | /** @addtogroup main
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[b45c443] | 30 | * @{
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| 31 | */
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| 32 |
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[9179d0a] | 33 | /**
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[b45c443] | 34 | * @file
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[9179d0a] | 35 | * @brief Kernel initialization thread.
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| 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 |
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[f761f1eb] | 44 | #include <main/kinit.h>
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[2677758] | 45 | #include <config.h>
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| 46 | #include <arch.h>
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[f761f1eb] | 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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| 50 | #include <panic.h>
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| 51 | #include <func.h>
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| 52 | #include <cpu.h>
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| 53 | #include <arch/asm.h>
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| 54 | #include <mm/page.h>
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| 55 | #include <arch/mm/page.h>
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[20d50a1] | 56 | #include <mm/as.h>
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[ff3b3197] | 57 | #include <mm/frame.h>
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[9c0a9b3] | 58 | #include <print.h>
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[399ccd9] | 59 | #include <memstr.h>
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[ff3b3197] | 60 | #include <console/console.h>
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[aace6624] | 61 | #include <interrupt.h>
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[f4338d2] | 62 | #include <console/kconsole.h>
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[1077d91] | 63 | #include <security/cap.h>
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[d4b5542] | 64 | #include <lib/rd.h>
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[b3f8fb7] | 65 | #include <ipc/ipc.h>
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[f761f1eb] | 66 |
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[5f85c91] | 67 | #ifdef CONFIG_SMP
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[26678e5] | 68 | #include <smp/smp.h>
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[5f85c91] | 69 | #endif /* CONFIG_SMP */
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[f761f1eb] | 70 |
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| 71 | #include <synch/waitq.h>
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| 72 | #include <synch/spinlock.h>
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| 73 |
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[880de6e] | 74 | /** Kernel initialization thread.
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| 75 | *
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| 76 | * kinit takes care of higher level kernel
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| 77 | * initialization (i.e. thread creation,
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| 78 | * userspace initialization etc.).
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| 79 | *
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| 80 | * @param arg Not used.
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| 81 | */
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[f761f1eb] | 82 | void kinit(void *arg)
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| 83 | {
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[80d2bdb] | 84 | thread_t *t;
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[f761f1eb] | 85 |
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[2cb5e64] | 86 | /*
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| 87 | * Detach kinit as nobody will call thread_join_timeout() on it.
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| 88 | */
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| 89 | thread_detach(THREAD);
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| 90 |
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[22f7769] | 91 | interrupts_disable();
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[f761f1eb] | 92 |
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[5f85c91] | 93 | #ifdef CONFIG_SMP
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[f761f1eb] | 94 | if (config.cpu_count > 1) {
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[26678e5] | 95 | waitq_initialize(&ap_completion_wq);
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[f761f1eb] | 96 | /*
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| 97 | * Create the kmp thread and wait for its completion.
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| 98 | * cpu1 through cpuN-1 will come up consecutively and
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[169c408] | 99 | * not mess together with kcpulb threads.
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[f761f1eb] | 100 | * Just a beautification.
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| 101 | */
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[6f4495f5] | 102 | if ((t = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED,
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| 103 | "kmp", true))) {
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[f761f1eb] | 104 | spinlock_lock(&t->lock);
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| 105 | t->cpu = &cpus[0];
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| 106 | spinlock_unlock(&t->lock);
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| 107 | thread_ready(t);
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[8e3bf3e2] | 108 | } else
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[2cb5e64] | 109 | panic("thread_create/kmp\n");
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| 110 | thread_join(t);
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[c778c1a] | 111 | thread_detach(t);
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[f761f1eb] | 112 | }
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[5f85c91] | 113 | #endif /* CONFIG_SMP */
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[f761f1eb] | 114 | /*
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| 115 | * Now that all CPUs are up, we can report what we've found.
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| 116 | */
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[0132630] | 117 | cpu_list();
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[f761f1eb] | 118 |
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[5f85c91] | 119 | #ifdef CONFIG_SMP
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[f761f1eb] | 120 | if (config.cpu_count > 1) {
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[e5dbbe5] | 121 | count_t i;
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[0132630] | 122 |
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[76cec1e] | 123 | /*
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[f761f1eb] | 124 | * For each CPU, create its load balancing thread.
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| 125 | */
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| 126 | for (i = 0; i < config.cpu_count; i++) {
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| 127 |
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[6f4495f5] | 128 | if ((t = thread_create(kcpulb, NULL, TASK,
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| 129 | THREAD_FLAG_WIRED, "kcpulb", true))) {
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[f761f1eb] | 130 | spinlock_lock(&t->lock);
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| 131 | t->cpu = &cpus[i];
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| 132 | spinlock_unlock(&t->lock);
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| 133 | thread_ready(t);
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[8e3bf3e2] | 134 | } else
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| 135 | panic("thread_create/kcpulb\n");
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[f761f1eb] | 136 |
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| 137 | }
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| 138 | }
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[5f85c91] | 139 | #endif /* CONFIG_SMP */
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[f761f1eb] | 140 |
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[a83a802] | 141 | /*
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| 142 | * At this point SMP, if present, is configured.
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| 143 | */
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| 144 | arch_post_smp_init();
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| 145 |
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[2677758] | 146 | /*
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| 147 | * Create kernel console.
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| 148 | */
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[4184e76] | 149 | t = thread_create(kconsole, (void *) "kconsole", TASK, 0, "kconsole", false);
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[6f4495f5] | 150 | if (t)
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[2677758] | 151 | thread_ready(t);
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[77147d6] | 152 | else
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| 153 | panic("thread_create/kconsole\n");
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[2677758] | 154 |
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[22f7769] | 155 | interrupts_enable();
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[4bc141c] | 156 |
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[b6b576c] | 157 | count_t i;
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| 158 | for (i = 0; i < init.cnt; i++) {
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[44c259c] | 159 | /*
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[228b135] | 160 | * Run user tasks, load RAM disk images.
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[44c259c] | 161 | */
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[77147d6] | 162 |
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[228b135] | 163 | if (init.tasks[i].addr % FRAME_SIZE) {
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| 164 | printf("init[%d].addr is not frame aligned", i);
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| 165 | continue;
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| 166 | }
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[ef67bab] | 167 |
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[6f4495f5] | 168 | task_t *utask = task_run_program((void *) init.tasks[i].addr,
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| 169 | "uspace");
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[ff3a34b] | 170 |
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[2ba7810] | 171 | if (utask) {
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[1077d91] | 172 | /*
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| 173 | * Set capabilities to init userspace tasks.
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| 174 | */
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[6f4495f5] | 175 | cap_set(utask, CAP_CAP | CAP_MEM_MANAGER |
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| 176 | CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
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[1077d91] | 177 |
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[2ba7810] | 178 | if (!ipc_phone_0)
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| 179 | ipc_phone_0 = &utask->answerbox;
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[228b135] | 180 | } else {
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[6f4495f5] | 181 | int rd = init_rd((rd_header *) init.tasks[i].addr,
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| 182 | init.tasks[i].size);
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[228b135] | 183 |
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[058b021] | 184 | if (rd != RE_OK)
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[ff3a34b] | 185 | printf("Init binary %zd not used, error code %d.\n", i, rd);
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[228b135] | 186 | }
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[44c259c] | 187 | }
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[f761f1eb] | 188 |
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| 189 |
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[ff3b3197] | 190 | if (!stdin) {
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| 191 | while (1) {
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| 192 | thread_sleep(1);
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| 193 | printf("kinit... ");
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| 194 | }
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[f761f1eb] | 195 | }
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| 196 | }
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[b45c443] | 197 |
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[8e3bf3e2] | 198 | /** @}
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[b45c443] | 199 | */
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