Subversion Repositories HelenOS

Rev

Rev 3386 | Rev 4263 | 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
4153 mejdrech 35
 * @brief Kernel initialization thread.
1248 jermar 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>
4153 mejdrech 67
#include <debug.h>
68
#include <string.h>
1 jermar 69
 
458 decky 70
#ifdef CONFIG_SMP
1901 jermar 71
#include <smp/smp.h>
458 decky 72
#endif /* CONFIG_SMP */
1 jermar 73
 
74
#include <synch/waitq.h>
75
#include <synch/spinlock.h>
76
 
4153 mejdrech 77
#define ALIVE_CHARS  4
78
 
79
#ifdef CONFIG_KCONSOLE
80
static char alive[ALIVE_CHARS] = "-\\|/";
81
#endif
82
 
83
#define INIT_PREFIX      "init:"
84
#define INIT_PREFIX_LEN  5
85
 
523 jermar 86
/** Kernel initialization thread.
87
 *
88
 * kinit takes care of higher level kernel
89
 * initialization (i.e. thread creation,
90
 * userspace initialization etc.).
91
 *
92
 * @param arg Not used.
93
 */
1 jermar 94
void kinit(void *arg)
95
{
96
 
4153 mejdrech 97
#if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE)
98
    thread_t *thread;
99
#endif
100
 
1576 jermar 101
    /*
102
     * Detach kinit as nobody will call thread_join_timeout() on it.
103
     */
104
    thread_detach(THREAD);
4153 mejdrech 105
 
413 jermar 106
    interrupts_disable();
4153 mejdrech 107
 
108
#ifdef CONFIG_SMP
1 jermar 109
    if (config.cpu_count > 1) {
1901 jermar 110
        waitq_initialize(&ap_completion_wq);
1 jermar 111
        /*
112
         * Create the kmp thread and wait for its completion.
113
         * cpu1 through cpuN-1 will come up consecutively and
430 jermar 114
         * not mess together with kcpulb threads.
1 jermar 115
         * Just a beautification.
116
         */
4153 mejdrech 117
        thread = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp", true);
118
        if (thread != NULL) {
119
            spinlock_lock(&thread->lock);
120
            thread->cpu = &cpus[0];
121
            spinlock_unlock(&thread->lock);
122
            thread_ready(thread);
1729 decky 123
        } else
4153 mejdrech 124
            panic("Unable to create kmp thread.");
125
        thread_join(thread);
126
        thread_detach(thread);
1 jermar 127
    }
4153 mejdrech 128
 
1 jermar 129
    if (config.cpu_count > 1) {
2223 decky 130
        count_t i;
673 jermar 131
 
125 jermar 132
        /*
1 jermar 133
         * For each CPU, create its load balancing thread.
134
         */
135
        for (i = 0; i < config.cpu_count; i++) {
4153 mejdrech 136
            thread = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb", true);
137
            if (thread != NULL) {
138
                spinlock_lock(&thread->lock);
139
                thread->cpu = &cpus[i];
140
                spinlock_unlock(&thread->lock);
141
                thread_ready(thread);
1729 decky 142
            } else
4153 mejdrech 143
                printf("Unable to create kcpulb thread for cpu" PRIc "\n", i);
1 jermar 144
        }
145
    }
458 decky 146
#endif /* CONFIG_SMP */
4153 mejdrech 147
 
510 jermar 148
    /*
512 jermar 149
     * At this point SMP, if present, is configured.
150
     */
151
    arch_post_smp_init();
4153 mejdrech 152
 
153
#ifdef CONFIG_KCONSOLE
154
    if (stdin) {
155
        /*
156
         * Create kernel console.
157
         */
158
        thread = thread_create(kconsole_thread, NULL, TASK, 0, "kconsole", false);
159
        if (thread != NULL)
160
            thread_ready(thread);
161
        else
162
            printf("Unable to create kconsole thread\n");
163
    }
164
#endif /* CONFIG_KCONSOLE */
165
 
413 jermar 166
    interrupts_enable();
3060 decky 167
 
168
    /*
169
     * Create user tasks, load RAM disk images.
170
     */
1037 decky 171
    count_t i;
3222 svoboda 172
    program_t programs[CONFIG_INIT_TASKS];
3060 decky 173
 
1037 decky 174
    for (i = 0; i < init.cnt; i++) {
1999 decky 175
        if (init.tasks[i].addr % FRAME_SIZE) {
4153 mejdrech 176
            printf("init[%" PRIc "].addr is not frame aligned\n", i);
1999 decky 177
            continue;
178
        }
4153 mejdrech 179
 
180
        /*
181
         * Construct task name from the 'init:' prefix and the
182
         * name stored in the init structure (if any).
183
         */
184
 
185
        char namebuf[TASK_NAME_BUFLEN];
186
        char *name;
187
 
188
        name = init.tasks[i].name;
189
        if (name[0] == '\0')
190
            name = "<unknown>";
191
 
192
        ASSERT(TASK_NAME_BUFLEN >= INIT_PREFIX_LEN);
193
        strncpy(namebuf, INIT_PREFIX, TASK_NAME_BUFLEN);
194
        strncpy(namebuf + INIT_PREFIX_LEN, name,
195
            TASK_NAME_BUFLEN - INIT_PREFIX_LEN);
196
 
3222 svoboda 197
        int rc = program_create_from_image((void *) init.tasks[i].addr,
4153 mejdrech 198
            namebuf, &programs[i]);
199
 
200
        if ((rc == 0) && (programs[i].task != NULL)) {
1174 jermar 201
            /*
202
             * Set capabilities to init userspace tasks.
203
             */
3222 svoboda 204
            cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER |
2087 jermar 205
                CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
1174 jermar 206
 
3060 decky 207
            if (!ipc_phone_0)
3222 svoboda 208
                ipc_phone_0 = &programs[i].task->answerbox;
209
        } else if (rc == 0) {
210
            /* It was the program loader and was registered */
1999 decky 211
        } else {
3222 svoboda 212
            /* RAM disk image */
4153 mejdrech 213
            int rd = init_rd((rd_header_t *) init.tasks[i].addr, init.tasks[i].size);
1999 decky 214
 
2002 decky 215
            if (rd != RE_OK)
4153 mejdrech 216
                printf("Init binary %" PRIc " not used (error %d)\n", i, rd);
1999 decky 217
        }
717 decky 218
    }
3060 decky 219
 
220
    /*
4153 mejdrech 221
     * Run user tasks with small delays
222
     * to avoid intermixed klog output.
223
     *
224
     * TODO: This certainly does not guarantee
225
     *       anything, it just works in most of the
226
     *       cases. Some better way how to achieve
227
     *       nice klog output should be found.
3060 decky 228
     */
229
    for (i = 0; i < init.cnt; i++) {
3222 svoboda 230
        if (programs[i].task != NULL) {
231
            program_ready(&programs[i]);
4153 mejdrech 232
            thread_usleep(10000);
3060 decky 233
        }
234
    }
4153 mejdrech 235
 
236
#ifdef CONFIG_KCONSOLE
517 jermar 237
    if (!stdin) {
4153 mejdrech 238
        thread_sleep(10);
239
        printf("kinit: No stdin\nKernel alive: .");
240
 
241
        unsigned int i = 0;
242
        while (true) {
243
            printf("\b%c", alive[i % ALIVE_CHARS]);
517 jermar 244
            thread_sleep(1);
4153 mejdrech 245
            i++;
517 jermar 246
        }
1 jermar 247
    }
4153 mejdrech 248
#endif /* CONFIG_KCONSOLE */
1 jermar 249
}
1702 cejka 250
 
1729 decky 251
/** @}
1702 cejka 252
 */