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1 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2001-2004 Jakub Jermar
1 jermar 3
 * 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
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 * @{
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 */
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1248 jermar 33
/**
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 * @file
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 * @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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#include <main/kinit.h>
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#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>
3222 svoboda 50
#include <proc/program.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>
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#include <mm/as.h>
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#include <mm/frame.h>
195 vana 59
#include <print.h>
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#include <memstr.h>
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#include <console/console.h>
578 palkovsky 62
#include <interrupt.h>
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#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>
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458 decky 68
#ifdef CONFIG_SMP
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#include <smp/smp.h>
458 decky 70
#endif /* CONFIG_SMP */
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#include <synch/waitq.h>
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#include <synch/spinlock.h>
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523 jermar 75
/** 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 83
void kinit(void *arg)
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{
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3742 rimsky 86
#if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE)
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    thread_t *thread;
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#endif
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1576 jermar 90
    /*
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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 95
    interrupts_disable();
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458 decky 97
#ifdef CONFIG_SMP           
1 jermar 98
    if (config.cpu_count > 1) {
1901 jermar 99
        waitq_initialize(&ap_completion_wq);
1 jermar 100
        /*
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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 103
         * not mess together with kcpulb threads.
1 jermar 104
         * Just a beautification.
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         */
3742 rimsky 106
        thread = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp", true);
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        if (thread != NULL) {
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            spinlock_lock(&thread->lock);
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            thread->cpu = &cpus[0];
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            spinlock_unlock(&thread->lock);
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            thread_ready(thread);
1729 decky 112
        } else
3742 rimsky 113
            panic("Unable to create kmp thread\n");
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        thread_join(thread);
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        thread_detach(thread);
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    }
458 decky 117
#endif /* CONFIG_SMP */
3742 rimsky 118
 
458 decky 119
#ifdef CONFIG_SMP
1 jermar 120
    if (config.cpu_count > 1) {
2223 decky 121
        count_t i;
673 jermar 122
 
125 jermar 123
        /*
1 jermar 124
         * For each CPU, create its load balancing thread.
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         */
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        for (i = 0; i < config.cpu_count; i++) {
3742 rimsky 127
            thread = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb", true);
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            if (thread != NULL) {
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                spinlock_lock(&thread->lock);
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                thread->cpu = &cpus[i];
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                spinlock_unlock(&thread->lock);
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                thread_ready(thread);
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            } else
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                printf("Unable to create kcpulb thread for cpu" PRIc "\n", i);
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        }
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    }
458 decky 138
#endif /* CONFIG_SMP */
3742 rimsky 139
 
510 jermar 140
    /*
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     * At this point SMP, if present, is configured.
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     */
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    arch_post_smp_init();
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3742 rimsky 145
#ifdef CONFIG_KCONSOLE
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    if (stdin) {
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        /*
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         * Create kernel console.
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         */
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        thread = thread_create(kconsole_thread, NULL, TASK, 0, "kconsole", false);
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        if (thread != NULL)
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            thread_ready(thread);
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        else
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            printf("Unable to create kconsole thread\n");
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    }
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#endif /* CONFIG_KCONSOLE */
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413 jermar 158
    interrupts_enable();
3060 decky 159
    /*
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     * Create user tasks, load RAM disk images.
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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) {
3742 rimsky 167
            printf("init[%" PRIc "].addr is not frame aligned\n", i);
1999 decky 168
            continue;
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        }
3742 rimsky 170
 
3222 svoboda 171
        int rc = program_create_from_image((void *) init.tasks[i].addr,
3593 rimsky 172
            "init-bin", &programs[i]);
3742 rimsky 173
 
174
        if ((rc == 0) && (programs[i].task != NULL)) {
1174 jermar 175
            /*
176
             * Set capabilities to init userspace tasks.
177
             */
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;
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        } else if (rc == 0) {
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            /* It was the program loader and was registered */
1999 decky 185
        } else {
3222 svoboda 186
            /* RAM disk image */
3742 rimsky 187
            int rd = init_rd((rd_header_t *) init.tasks[i].addr, init.tasks[i].size);
1999 decky 188
 
2002 decky 189
            if (rd != RE_OK)
3742 rimsky 190
                printf("Init binary %" PRIc " not used (error %d)\n", i, rd);
1999 decky 191
        }
717 decky 192
    }
3060 decky 193
 
194
    /*
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     * Run user tasks with reasonable delays
196
     */
197
    for (i = 0; i < init.cnt; i++) {
3222 svoboda 198
        if (programs[i].task != NULL) {
3060 decky 199
            thread_usleep(50000);
3222 svoboda 200
            program_ready(&programs[i]);
3060 decky 201
        }
202
    }
3742 rimsky 203
#ifdef CONFIG_KCONSOLE
517 jermar 204
    if (!stdin) {
3742 rimsky 205
        printf("kinit: No stdin\nKernel alive: ");
206
 
207
        uint64_t i = 0;
517 jermar 208
        while (1) {
3742 rimsky 209
            printf(PRIu64 " ", i);
517 jermar 210
            thread_sleep(1);
3742 rimsky 211
            i++;
517 jermar 212
        }
1 jermar 213
    }
3742 rimsky 214
#endif /* CONFIG_KCONSOLE */
1 jermar 215
}
1702 cejka 216
 
1729 decky 217
/** @}
1702 cejka 218
 */