Subversion Repositories HelenOS

Rev

Rev 3865 | Rev 3995 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2001-2004 Jakub Jermar
1 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
 
1729 decky 29
/** @addtogroup main
1702 cejka 30
 * @{
31
 */
32
 
1248 jermar 33
/**
1702 cejka 34
 * @file
1248 jermar 35
 * @brief   Kernel initialization thread.
36
 *
37
 * This file contains kinit kernel thread which carries out
38
 * high level system initialization.
39
 *
40
 * This file is responsible for finishing SMP configuration
41
 * and creation of userspace init tasks.
42
 */
43
 
510 jermar 44
#include <main/kinit.h>
1 jermar 45
#include <config.h>
46
#include <arch.h>
47
#include <proc/scheduler.h>
48
#include <proc/task.h>
49
#include <proc/thread.h>
3222 svoboda 50
#include <proc/program.h>
1 jermar 51
#include <panic.h>
52
#include <func.h>
53
#include <cpu.h>
54
#include <arch/asm.h>
55
#include <mm/page.h>
56
#include <arch/mm/page.h>
703 jermar 57
#include <mm/as.h>
517 jermar 58
#include <mm/frame.h>
195 vana 59
#include <print.h>
236 jermar 60
#include <memstr.h>
517 jermar 61
#include <console/console.h>
578 palkovsky 62
#include <interrupt.h>
518 jermar 63
#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>
1 jermar 67
 
458 decky 68
#ifdef CONFIG_SMP
1901 jermar 69
#include <smp/smp.h>
458 decky 70
#endif /* CONFIG_SMP */
1 jermar 71
 
72
#include <synch/waitq.h>
73
#include <synch/spinlock.h>
74
 
3840 decky 75
#define ALIVE_CHARS  4
76
 
3865 rimsky 77
#ifdef CONFIG_KCONSOLE
3840 decky 78
static char alive[ALIVE_CHARS] = "-\\|/";
3865 rimsky 79
#endif
3840 decky 80
 
523 jermar 81
/** Kernel initialization thread.
82
 *
83
 * kinit takes care of higher level kernel
84
 * initialization (i.e. thread creation,
85
 * userspace initialization etc.).
86
 *
87
 * @param arg Not used.
88
 */
1 jermar 89
void kinit(void *arg)
90
{
91
 
3707 decky 92
#if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE)
93
    thread_t *thread;
94
#endif
95
 
1576 jermar 96
    /*
97
     * Detach kinit as nobody will call thread_join_timeout() on it.
98
     */
99
    thread_detach(THREAD);
100
 
413 jermar 101
    interrupts_disable();
1 jermar 102
 
458 decky 103
#ifdef CONFIG_SMP           
1 jermar 104
    if (config.cpu_count > 1) {
1901 jermar 105
        waitq_initialize(&ap_completion_wq);
1 jermar 106
        /*
107
         * Create the kmp thread and wait for its completion.
108
         * cpu1 through cpuN-1 will come up consecutively and
430 jermar 109
         * not mess together with kcpulb threads.
1 jermar 110
         * Just a beautification.
111
         */
3707 decky 112
        thread = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp", true);
113
        if (thread != NULL) {
114
            spinlock_lock(&thread->lock);
115
            thread->cpu = &cpus[0];
116
            spinlock_unlock(&thread->lock);
117
            thread_ready(thread);
1729 decky 118
        } else
3790 svoboda 119
            panic("Unable to create kmp thread.");
3707 decky 120
        thread_join(thread);
121
        thread_detach(thread);
1 jermar 122
    }
458 decky 123
#endif /* CONFIG_SMP */
3707 decky 124
 
458 decky 125
#ifdef CONFIG_SMP
1 jermar 126
    if (config.cpu_count > 1) {
2223 decky 127
        count_t i;
673 jermar 128
 
125 jermar 129
        /*
1 jermar 130
         * For each CPU, create its load balancing thread.
131
         */
132
        for (i = 0; i < config.cpu_count; i++) {
3707 decky 133
            thread = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb", true);
134
            if (thread != NULL) {
135
                spinlock_lock(&thread->lock);
136
                thread->cpu = &cpus[i];
137
                spinlock_unlock(&thread->lock);
138
                thread_ready(thread);
1729 decky 139
            } else
3707 decky 140
                printf("Unable to create kcpulb thread for cpu" PRIc "\n", i);
1 jermar 141
 
142
        }
143
    }
458 decky 144
#endif /* CONFIG_SMP */
3707 decky 145
 
510 jermar 146
    /*
512 jermar 147
     * At this point SMP, if present, is configured.
148
     */
149
    arch_post_smp_init();
150
 
3707 decky 151
#ifdef CONFIG_KCONSOLE
152
    if (stdin) {
153
        /*
154
         * Create kernel console.
155
         */
156
        thread = thread_create(kconsole_thread, NULL, TASK, 0, "kconsole", false);
157
        if (thread != NULL)
158
            thread_ready(thread);
159
        else
160
            printf("Unable to create kconsole thread\n");
161
    }
162
#endif /* CONFIG_KCONSOLE */
163
 
413 jermar 164
    interrupts_enable();
3060 decky 165
 
166
    /*
167
     * Create user tasks, load RAM disk images.
168
     */
1037 decky 169
    count_t i;
3222 svoboda 170
    program_t programs[CONFIG_INIT_TASKS];
3060 decky 171
 
1037 decky 172
    for (i = 0; i < init.cnt; i++) {
1999 decky 173
        if (init.tasks[i].addr % FRAME_SIZE) {
3707 decky 174
            printf("init[%" PRIc "].addr is not frame aligned\n", i);
1999 decky 175
            continue;
176
        }
3987 svoboda 177
 
178
        char *name = init.tasks[i].name;
179
        if (name[0] == '\0') name = "init-bin";
3707 decky 180
 
3222 svoboda 181
        int rc = program_create_from_image((void *) init.tasks[i].addr,
3987 svoboda 182
            name, &programs[i]);
3707 decky 183
 
184
        if ((rc == 0) && (programs[i].task != NULL)) {
1174 jermar 185
            /*
186
             * Set capabilities to init userspace tasks.
187
             */
3222 svoboda 188
            cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER |
2087 jermar 189
                CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
1174 jermar 190
 
3060 decky 191
            if (!ipc_phone_0)
3222 svoboda 192
                ipc_phone_0 = &programs[i].task->answerbox;
193
        } else if (rc == 0) {
194
            /* It was the program loader and was registered */
1999 decky 195
        } else {
3222 svoboda 196
            /* RAM disk image */
3707 decky 197
            int rd = init_rd((rd_header_t *) init.tasks[i].addr, init.tasks[i].size);
1999 decky 198
 
2002 decky 199
            if (rd != RE_OK)
3707 decky 200
                printf("Init binary %" PRIc " not used (error %d)\n", i, rd);
1999 decky 201
        }
717 decky 202
    }
3060 decky 203
 
204
    /*
205
     * Run user tasks with reasonable delays
206
     */
207
    for (i = 0; i < init.cnt; i++) {
3222 svoboda 208
        if (programs[i].task != NULL) {
3060 decky 209
            thread_usleep(50000);
3222 svoboda 210
            program_ready(&programs[i]);
3060 decky 211
        }
212
    }
1 jermar 213
 
3707 decky 214
#ifdef CONFIG_KCONSOLE
517 jermar 215
    if (!stdin) {
3840 decky 216
        thread_sleep(10);
3860 decky 217
        printf("kinit: No stdin\nKernel alive: .");
3707 decky 218
 
3840 decky 219
        unsigned int i = 0;
220
        while (true) {
221
            printf("\b%c", alive[i % ALIVE_CHARS]);
517 jermar 222
            thread_sleep(1);
3707 decky 223
            i++;
517 jermar 224
        }
1 jermar 225
    }
3707 decky 226
#endif /* CONFIG_KCONSOLE */
1 jermar 227
}
1702 cejka 228
 
1729 decky 229
/** @}
1702 cejka 230
 */