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1 jermar 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1729 decky 29
/** @addtogroup main
1702 cejka 30
 * @{
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 */
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1248 jermar 33
/**
1702 cejka 34
 * @file
1248 jermar 35
 * @brief   Kernel initialization thread.
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 *
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 * This file contains kinit kernel thread which carries out
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 * high level system initialization.
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 *
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 * This file is responsible for finishing SMP configuration
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 * and creation of userspace init tasks.
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 */
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510 jermar 44
#include <main/kinit.h>
1 jermar 45
#include <config.h>
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#include <arch.h>
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#include <proc/scheduler.h>
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#include <proc/task.h>
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#include <proc/thread.h>
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#include <panic.h>
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#include <func.h>
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#include <cpu.h>
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#include <arch/asm.h>
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#include <mm/page.h>
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#include <arch/mm/page.h>
703 jermar 56
#include <mm/as.h>
517 jermar 57
#include <mm/frame.h>
195 vana 58
#include <print.h>
236 jermar 59
#include <memstr.h>
517 jermar 60
#include <console/console.h>
578 palkovsky 61
#include <interrupt.h>
518 jermar 62
#include <console/kconsole.h>
1174 jermar 63
#include <security/cap.h>
2000 decky 64
#include <lib/rd.h>
1 jermar 65
 
458 decky 66
#ifdef CONFIG_SMP
1901 jermar 67
#include <smp/smp.h>
458 decky 68
#endif /* CONFIG_SMP */
1 jermar 69
 
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#include <synch/waitq.h>
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#include <synch/spinlock.h>
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459 decky 73
#ifdef CONFIG_TEST
1 jermar 74
#include <test.h>
459 decky 75
#endif /* CONFIG_TEST */
1 jermar 76
 
523 jermar 77
/** Kernel initialization thread.
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 *
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 * kinit takes care of higher level kernel
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 * initialization (i.e. thread creation,
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 * userspace initialization etc.).
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 *
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 * @param arg Not used.
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 */
1 jermar 85
void kinit(void *arg)
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{
625 palkovsky 87
    thread_t *t;
1 jermar 88
 
1576 jermar 89
    /*
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     * Detach kinit as nobody will call thread_join_timeout() on it.
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     */
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    thread_detach(THREAD);
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413 jermar 94
    interrupts_disable();
1 jermar 95
 
458 decky 96
#ifdef CONFIG_SMP           
1 jermar 97
    if (config.cpu_count > 1) {
1901 jermar 98
        waitq_initialize(&ap_completion_wq);
1 jermar 99
        /*
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         * Create the kmp thread and wait for its completion.
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         * cpu1 through cpuN-1 will come up consecutively and
430 jermar 102
         * not mess together with kcpulb threads.
1 jermar 103
         * Just a beautification.
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         */
1854 jermar 105
        if ((t = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp"))) {
1 jermar 106
            spinlock_lock(&t->lock);
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            t->cpu = &cpus[0];
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            spinlock_unlock(&t->lock);
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            thread_ready(t);
1729 decky 110
        } else
1576 jermar 111
            panic("thread_create/kmp\n");
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        thread_join(t);
1581 jermar 113
        thread_detach(t);
1 jermar 114
    }
458 decky 115
#endif /* CONFIG_SMP */
1 jermar 116
    /*
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     * Now that all CPUs are up, we can report what we've found.
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     */
673 jermar 119
    cpu_list();
1 jermar 120
 
458 decky 121
#ifdef CONFIG_SMP
1 jermar 122
    if (config.cpu_count > 1) {
673 jermar 123
        int i;
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125 jermar 125
        /*
1 jermar 126
         * For each CPU, create its load balancing thread.
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         */
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        for (i = 0; i < config.cpu_count; i++) {
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1854 jermar 130
            if ((t = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb"))) {
1 jermar 131
                spinlock_lock(&t->lock);           
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                t->cpu = &cpus[i];
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                spinlock_unlock(&t->lock);
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                thread_ready(t);
1729 decky 135
            } else
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                panic("thread_create/kcpulb\n");
1 jermar 137
 
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        }
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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.
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     */
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    arch_post_smp_init();
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    /*
510 jermar 148
     * Create kernel console.
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     */
1062 jermar 150
    if ((t = thread_create(kconsole, "kconsole", TASK, 0, "kconsole")))
510 jermar 151
        thread_ready(t);
718 decky 152
    else
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        panic("thread_create/kconsole\n");
510 jermar 154
 
413 jermar 155
    interrupts_enable();
1659 vana 156
 
157
#ifdef CONFIG_TEST
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    test();
1855 jermar 159
    printf("\nTest finished, please reboot.\n");
1659 vana 160
#else  /* CONFIG_TEST */
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1037 decky 162
    count_t i;
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    for (i = 0; i < init.cnt; i++) {
717 decky 164
        /*
1999 decky 165
         * Run user tasks, load RAM disk images.
717 decky 166
         */
718 decky 167
 
1999 decky 168
        if (init.tasks[i].addr % FRAME_SIZE) {
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            printf("init[%d].addr is not frame aligned", i);
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            continue;
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        }
794 palkovsky 172
 
1999 decky 173
        task_t *utask = task_run_program((void *) init.tasks[i].addr, "USPACE");
1040 palkovsky 174
        if (utask) {
1174 jermar 175
            /*
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             * Set capabilities to init userspace tasks.
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             */
1341 cejka 178
            cap_set(utask, CAP_CAP | CAP_MEM_MANAGER | CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
1174 jermar 179
 
1040 palkovsky 180
            if (!ipc_phone_0)
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                ipc_phone_0 = &utask->answerbox;
1999 decky 182
        } else {
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            bool rd = init_rd((void *) init.tasks[i].addr);
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            if (!rd)
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                printf("Init binary %zd not used.\n", i);
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        }
717 decky 188
    }
1 jermar 189
 
190
 
517 jermar 191
    if (!stdin) {
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        while (1) {
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            thread_sleep(1);
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            printf("kinit... ");
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        }
1 jermar 196
    }
1659 vana 197
#endif /* CONFIG_TEST */
1 jermar 198
 
199
}
1702 cejka 200
 
1729 decky 201
/** @}
1702 cejka 202
 */