Subversion Repositories HelenOS

Rev

Rev 125 | Rev 167 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1 
/*
2 
 * Copyright (C) 2001-2004 Jakub Jermar
3 
 * All rights reserved.
4 
 *
5 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions
7 
 * are met:
8 
 *
9 
 * - Redistributions of source code must retain the above copyright
10 
 *   notice, this list of conditions and the following disclaimer.
11 
 * - Redistributions in binary form must reproduce the above copyright
12 
 *   notice, this list of conditions and the following disclaimer in the
13 
 *   documentation and/or other materials provided with the distribution.
14 
 * - The name of the author may not be used to endorse or promote products
15 
 *   derived from this software without specific prior written permission.
16 
 *
17 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 */
28 
 
29 
#include <config.h>
30 
#include <arch.h>
31 
#include <main/kinit.h>
32 
#include <main/uinit.h>
33 
#include <proc/scheduler.h>
34 
#include <proc/task.h>
35 
#include <proc/thread.h>
36 
#include <panic.h>
37 
#include <func.h>
38 
#include <cpu.h>
39 
#include <arch/asm.h>
40 
#include <mm/page.h>
41 
#include <arch/mm/page.h>
42 
#include <mm/vm.h>
43 
 
44 
#ifdef __SMP__
34 jermar 45 
#include <arch/smp/mps.h>
1 jermar 46 
#endif /* __SMP__ */
47 
 
48 
#include <synch/waitq.h>
49 
#include <synch/spinlock.h>
50 
 
51 
#ifdef __TEST__
52 
#include <test.h>
53 
#endif /* __TEST__ */
54 
 
55 
void kinit(void *arg)
56 
{
57 
    vm_t *m;
58 
    vm_area_t *a;
59 
    task_t *u;
60 
    thread_t *t;
61 
    int i;
62 
 
63 
    cpu_priority_high();
64 
 
65 
#ifdef __SMP__         
66 
    if (config.cpu_count > 1) {
67 
        /*
68 
         * Create the kmp thread and wait for its completion.
69 
         * cpu1 through cpuN-1 will come up consecutively and
70 
         * not mess together with kcpulb and klwtm threads.
71 
         * Just a beautification.
72 
         */
15 jermar 73 
        if (t = thread_create(kmp, NULL, TASK, 0)) {
1 jermar 74 
            spinlock_lock(&t->lock);
75 
            t->flags |= X_WIRED;
76 
            t->cpu = &cpus[0];
77 
            spinlock_unlock(&t->lock);
78 
            thread_ready(t);
79 
            waitq_sleep(&kmp_completion_wq);
80 
            cpu_priority_high();
81 
        }
82 
        else panic("thread_create/kmp");
83 
    }
84 
#endif /* __SMP__ */
85 
    /*
86 
     * Now that all CPUs are up, we can report what we've found.
87 
     */
32 jermar 88 
    for (i = 0; i < config.cpu_count; i++) {
28 jermar 89 
        if (cpus[i].active)
90 
            cpu_print_report(&cpus[i]);
32 jermar 91 
        else
92 
            printf("cpu%d: not active\n", i);
93 
    }
1 jermar 94 
 
95 
#ifdef __SMP__
96 
    if (config.cpu_count > 1) {
125 jermar 97 
        /*
1 jermar 98 
         * For each CPU, create its load balancing thread.
99 
         */
100 
        for (i = 0; i < config.cpu_count; i++) {
101 
 
15 jermar 102 
            if (t = thread_create(kcpulb, NULL, TASK, 0)) {
1 jermar 103 
                spinlock_lock(&t->lock);           
104 
                t->flags |= X_WIRED;
105 
                t->cpu = &cpus[i];
106 
                spinlock_unlock(&t->lock);
107 
                thread_ready(t);
108 
            }
109 
            else panic("thread_create/kcpulb");
110 
 
111 
        }
112 
    }
113 
#endif /* __SMP__ */
114 
 
115 
    cpu_priority_low();
116 
 
34 jermar 117 
#ifdef __USERSPACE__
1 jermar 118 
    /*
119 
     * Create the first user task.
120 
     */
121 
    m = vm_create();
68 decky 122 
    if (!m) panic("vm_create");
1 jermar 123 
    u = task_create(m);
68 decky 124 
    if (!u) panic("task_create");
1 jermar 125 
    t = thread_create(uinit, NULL, u, THREAD_USER_STACK);
68 decky 126 
    if (!t) panic("thread_create");
1 jermar 127 
 
128 
    /*
129 
     * Create the text vm_area and copy the userspace code there.
130 
     */
131 
    a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS);
68 decky 132 
    if (!a) panic("vm_area_create: vm_text");
135 jermar 133 
    memcopy((__address) utext, PA2KA(a->mapping[0]), utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE);
1 jermar 134 
 
135 
    /*
136 
     * Create the data vm_area.
137 
     */
138 
    a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS);
68 decky 139 
    if (!a) panic("vm_area_create: vm_stack");
1 jermar 140 
 
141 
    thread_ready(t);
34 jermar 142 
#endif /* __USERSPACE__ */
1 jermar 143 
 
144 
#ifdef __TEST__
145 
    test();
146 
#endif /* __TEST__ */
147 
 
148 
 
149 
    while (1) {
150 
        thread_usleep(1000000);
151 
        printf("kinit... ");
152 
    }
153 
 
154 
}