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1 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2001-2004 Jakub Jermar
1 jermar 3
 * 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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1729 decky 29
/** @addtogroup main
1702 cejka 30
 * @{
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 */
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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
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 * high level system initialization.
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 *
40
 * This file is responsible for finishing SMP configuration
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 * and creation of userspace init tasks.
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 */
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510 jermar 44
#include <main/kinit.h>
1 jermar 45
#include <config.h>
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#include <arch.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>
3222 svoboda 50
#include <proc/program.h>
1 jermar 51
#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>
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>
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#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>
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#include <synch/spinlock.h>
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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:"
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#define INIT_PREFIX_LEN  5
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523 jermar 86
/** Kernel initialization thread.
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 *
88
 * kinit takes care of higher level kernel
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 * initialization (i.e. thread creation,
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 * userspace initialization etc.).
91
 *
92
 * @param arg Not used.
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 */
1 jermar 94
void kinit(void *arg)
95
{
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4153 mejdrech 97
#if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE)
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    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);
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            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) {
4581 mejdrech 130
        size_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);
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                thread->cpu = &cpus[i];
140
                spinlock_unlock(&thread->lock);
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                thread_ready(thread);
1729 decky 142
            } else
4581 mejdrech 143
                printf("Unable to create kcpulb thread for cpu" PRIs "\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
     */
4581 mejdrech 171
    size_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) {
4581 mejdrech 176
            printf("init[%" PRIs "].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;
4263 mejdrech 189
        if (name[0] == 0)
4153 mejdrech 190
            name = "<unknown>";
191
 
192
        ASSERT(TASK_NAME_BUFLEN >= INIT_PREFIX_LEN);
4327 mejdrech 193
        str_cpy(namebuf, TASK_NAME_BUFLEN, INIT_PREFIX);
194
        str_cpy(namebuf + INIT_PREFIX_LEN,
195
            TASK_NAME_BUFLEN - INIT_PREFIX_LEN, name);
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)
4581 mejdrech 216
                printf("Init binary %" PRIs " not used (error %d)\n", i, rd);
1999 decky 217
        }
717 decky 218
    }
3060 decky 219
 
220
    /*
4327 mejdrech 221
     * Run user tasks.
3060 decky 222
     */
223
    for (i = 0; i < init.cnt; i++) {
4327 mejdrech 224
        if (programs[i].task != NULL)
3222 svoboda 225
            program_ready(&programs[i]);
3060 decky 226
    }
4153 mejdrech 227
 
228
#ifdef CONFIG_KCONSOLE
517 jermar 229
    if (!stdin) {
4153 mejdrech 230
        thread_sleep(10);
231
        printf("kinit: No stdin\nKernel alive: .");
232
 
233
        unsigned int i = 0;
234
        while (true) {
235
            printf("\b%c", alive[i % ALIVE_CHARS]);
517 jermar 236
            thread_sleep(1);
4153 mejdrech 237
            i++;
517 jermar 238
        }
1 jermar 239
    }
4153 mejdrech 240
#endif /* CONFIG_KCONSOLE */
1 jermar 241
}
1702 cejka 242
 
1729 decky 243
/** @}
1702 cejka 244
 */