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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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#include <config.h>
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#include <arch.h>
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#include <main/kinit.h>
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#include <main/uinit.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>
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#include <mm/vm.h>
195 vana 43 
#include <print.h>
236 jermar 44 
#include <memstr.h>
1 jermar 45 
 
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#ifdef __SMP__
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#include <arch/smp/mps.h>
1 jermar 48 
#endif /* __SMP__ */
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#include <synch/waitq.h>
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#include <synch/spinlock.h>
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#ifdef __TEST__
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#include <test.h>
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#endif /* __TEST__ */
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void kinit(void *arg)
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{
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    vm_t *m;
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    vm_area_t *a;
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    task_t *u;
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    thread_t *t;
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    int i;
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    cpu_priority_high();
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#ifdef __SMP__         
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    if (config.cpu_count > 1) {
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        /*
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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
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         * not mess together with kcpulb and klwtm threads.
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         * Just a beautification.
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         */
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        if (t = thread_create(kmp, NULL, TASK, 0)) {
1 jermar 76 
            spinlock_lock(&t->lock);
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            t->flags |= X_WIRED;
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            t->cpu = &cpus[0];
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            spinlock_unlock(&t->lock);
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            thread_ready(t);
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            waitq_sleep(&kmp_completion_wq);
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        }
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        else panic("thread_create/kmp");
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    }
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#endif /* __SMP__ */
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    /*
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     * Now that all CPUs are up, we can report what we've found.
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     */
32 jermar 89 
    for (i = 0; i < config.cpu_count; i++) {
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        if (cpus[i].active)
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            cpu_print_report(&cpus[i]);
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        else
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            printf("cpu%d: not active\n", i);
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    }
1 jermar 95 
 
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#ifdef __SMP__
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    if (config.cpu_count > 1) {
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        /*
1 jermar 99 
         * 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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15 jermar 103 
            if (t = thread_create(kcpulb, NULL, TASK, 0)) {
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                spinlock_lock(&t->lock);           
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                t->flags |= X_WIRED;
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                t->cpu = &cpus[i];
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                spinlock_unlock(&t->lock);
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                thread_ready(t);
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            }
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            else panic("thread_create/kcpulb");
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        }
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    }
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#endif /* __SMP__ */
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    cpu_priority_low();
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34 jermar 118 
#ifdef __USERSPACE__
1 jermar 119 
    /*
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     * Create the first user task.
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     */
167 jermar 122 
    m = vm_create(NULL);
68 decky 123 
    if (!m) panic("vm_create");
1 jermar 124 
    u = task_create(m);
68 decky 125 
    if (!u) panic("task_create");
1 jermar 126 
    t = thread_create(uinit, NULL, u, THREAD_USER_STACK);
68 decky 127 
    if (!t) panic("thread_create");
1 jermar 128 
 
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    /*
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     * Create the text vm_area and copy the userspace code there.
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     */
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    a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS);
68 decky 133 
    if (!a) panic("vm_area_create: vm_text");
167 jermar 134 
    vm_area_map(a, m);
205 jermar 135 
    memcpy((void *) PA2KA(a->mapping[0]), (void *) utext, utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE);
1 jermar 136 
 
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    /*
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     * Create the data vm_area.
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     */
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    a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS);
68 decky 141 
    if (!a) panic("vm_area_create: vm_stack");
167 jermar 142 
    vm_area_map(a, m); 
1 jermar 143 
 
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    thread_ready(t);
34 jermar 145 
#endif /* __USERSPACE__ */
1 jermar 146 
 
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#ifdef __TEST__
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    test();
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#endif /* __TEST__ */
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    while (1) {
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        thread_usleep(1000000);
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        printf("kinit... ");
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    }
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}