| 1 | /*
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| 2 | * Copyright (C) 2001-2004 Jakub Jermar
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| 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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| 29 | #include <config.h>
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| 30 | #include <arch.h>
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| 31 | #include <main/kinit.h>
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| 32 | #include <main/uinit.h>
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| 33 | #include <proc/scheduler.h>
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| 34 | #include <proc/task.h>
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| 35 | #include <proc/thread.h>
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| 36 | #include <panic.h>
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| 37 | #include <func.h>
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| 38 | #include <cpu.h>
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| 39 | #include <arch/asm.h>
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| 40 | #include <mm/page.h>
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| 41 | #include <arch/mm/page.h>
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| 42 | #include <mm/vm.h>
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| 43 |
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| 44 | #ifdef __SMP__
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| 45 | #include <arch/smp/mp.h>
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| 46 | #endif /* __SMP__ */
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| 47 |
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| 48 | #include <synch/waitq.h>
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| 49 | #include <synch/spinlock.h>
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| 50 |
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| 51 | #ifdef __TEST__
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| 52 | #include <test.h>
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| 53 | #endif /* __TEST__ */
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| 54 |
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| 55 | void kinit(void *arg)
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| 56 | {
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| 57 | vm_t *m;
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| 58 | vm_area_t *a;
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| 59 | task_t *u;
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| 60 | thread_t *t;
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| 61 | int i;
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| 62 |
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| 63 | cpu_priority_high();
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| 64 |
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| 65 | #ifdef __SMP__
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| 66 | if (config.cpu_count > 1) {
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| 67 | /*
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| 68 | * Create the kmp thread and wait for its completion.
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| 69 | * cpu1 through cpuN-1 will come up consecutively and
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| 70 | * not mess together with kcpulb and klwtm threads.
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| 71 | * Just a beautification.
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| 72 | */
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| 73 | if (t = thread_create(kmp, NULL, TASK, 0)) {
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| 74 | spinlock_lock(&t->lock);
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| 75 | t->flags |= X_WIRED;
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| 76 | t->cpu = &cpus[0];
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| 77 | spinlock_unlock(&t->lock);
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| 78 | thread_ready(t);
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| 79 | waitq_sleep(&kmp_completion_wq);
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| 80 | cpu_priority_high();
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| 81 | }
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| 82 | else panic("thread_create/kmp");
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| 83 | }
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| 84 | #endif /* __SMP__ */
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| 85 | /*
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| 86 | * Now that all CPUs are up, we can report what we've found.
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| 87 | */
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| 88 | for (i = 0; i < config.cpu_count; i++)
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| 89 | if (cpus[i].active)
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| 90 | cpu_print_report(&cpus[i]);
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| 91 |
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| 92 | #ifdef __SMP__
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| 93 | if (config.cpu_count > 1) {
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| 94 | /*
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| 95 | * For each CPU, create its load balancing thread.
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| 96 | */
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| 97 | for (i = 0; i < config.cpu_count; i++) {
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| 98 |
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| 99 | if (t = thread_create(kcpulb, NULL, TASK, 0)) {
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| 100 | spinlock_lock(&t->lock);
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| 101 | t->flags |= X_WIRED;
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| 102 | t->cpu = &cpus[i];
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| 103 | spinlock_unlock(&t->lock);
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| 104 | thread_ready(t);
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| 105 | }
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| 106 | else panic("thread_create/kcpulb");
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| 107 |
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| 108 | }
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| 109 | }
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| 110 | #endif /* __SMP__ */
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| 111 |
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| 112 | cpu_priority_low();
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| 113 |
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| 114 | /*
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| 115 | * Create the first user task.
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| 116 | */
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| 117 | m = vm_create();
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| 118 | if (!m) panic(PANIC "vm_create");
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| 119 | u = task_create(m);
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| 120 | if (!u) panic(PANIC "task_create");
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| 121 | t = thread_create(uinit, NULL, u, THREAD_USER_STACK);
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| 122 | if (!t) panic(PANIC "thread_create");
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| 123 |
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| 124 | /*
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| 125 | * Create the text vm_area and copy the userspace code there.
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| 126 | */
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| 127 | a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS);
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| 128 | if (!a) panic(PANIC "vm_area_create: vm_text");
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| 129 | memcopy((__address) utext, PA2KA(a->mapping[0]), utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE);
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| 130 |
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| 131 | /*
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| 132 | * Create the data vm_area.
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| 133 | */
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| 134 | a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS);
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| 135 | if (!a) panic(PANIC "vm_area_create: vm_stack");
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| 136 |
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| 137 | thread_ready(t);
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| 138 |
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| 139 | #ifdef __TEST__
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| 140 | test();
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| 141 | #endif /* __TEST__ */
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| 142 |
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| 143 |
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| 144 | while (1) {
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| 145 | thread_usleep(1000000);
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| 146 | printf("kinit... ");
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| 147 | }
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| 148 |
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| 149 | }
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