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/*
1
/*
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 * Copyright (c) 2001-2004 Jakub Jermar
2
 * Copyright (c) 2001-2004 Jakub Jermar
3
 * All rights reserved.
3
 * All rights reserved.
4
 *
4
 *
5
 * Redistribution and use in source and binary forms, with or without
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
6
 * modification, are permitted provided that the following conditions
7
 * are met:
7
 * are met:
8
 *
8
 *
9
 * - Redistributions of source code must retain the above copyright
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
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
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.
15
 *   derived from this software without specific prior written permission.
16
 *
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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
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.
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
27
 */
28
 
28
 
29
/** @addtogroup main
29
/** @addtogroup main
30
 * @{
30
 * @{
31
 */
31
 */
32
 
32
 
33
/**
33
/**
34
 * @file
34
 * @file
35
 * @brief Kernel initialization thread.
35
 * @brief Kernel initialization thread.
36
 *
36
 *
37
 * This file contains kinit kernel thread which carries out
37
 * This file contains kinit kernel thread which carries out
38
 * high level system initialization.
38
 * high level system initialization.
39
 *
39
 *
40
 * This file is responsible for finishing SMP configuration
40
 * This file is responsible for finishing SMP configuration
41
 * and creation of userspace init tasks.
41
 * and creation of userspace init tasks.
42
 */
42
 */
43
 
43
 
44
#include <main/kinit.h>
44
#include <main/kinit.h>
45
#include <config.h>
45
#include <config.h>
46
#include <arch.h>
46
#include <arch.h>
47
#include <proc/scheduler.h>
47
#include <proc/scheduler.h>
48
#include <proc/task.h>
48
#include <proc/task.h>
49
#include <proc/thread.h>
49
#include <proc/thread.h>
50
#include <proc/program.h>
50
#include <proc/program.h>
51
#include <panic.h>
51
#include <panic.h>
52
#include <func.h>
52
#include <func.h>
53
#include <cpu.h>
53
#include <cpu.h>
54
#include <arch/asm.h>
54
#include <arch/asm.h>
55
#include <mm/page.h>
55
#include <mm/page.h>
56
#include <arch/mm/page.h>
56
#include <arch/mm/page.h>
57
#include <mm/as.h>
57
#include <mm/as.h>
58
#include <mm/frame.h>
58
#include <mm/frame.h>
59
#include <print.h>
59
#include <print.h>
60
#include <memstr.h>
60
#include <memstr.h>
61
#include <console/console.h>
61
#include <console/console.h>
62
#include <interrupt.h>
62
#include <interrupt.h>
63
#include <console/kconsole.h>
63
#include <console/kconsole.h>
64
#include <security/cap.h>
64
#include <security/cap.h>
65
#include <lib/rd.h>
65
#include <lib/rd.h>
66
#include <ipc/ipc.h>
66
#include <ipc/ipc.h>
67
#include <debug.h>
67
#include <debug.h>
68
#include <string.h>
68
#include <string.h>
69
 
69
 
70
#ifdef CONFIG_SMP
70
#ifdef CONFIG_SMP
71
#include <smp/smp.h>
71
#include <smp/smp.h>
72
#endif /* CONFIG_SMP */
72
#endif /* CONFIG_SMP */
73
 
73
 
74
#include <synch/waitq.h>
74
#include <synch/waitq.h>
75
#include <synch/spinlock.h>
75
#include <synch/spinlock.h>
76
 
76
 
77
#define ALIVE_CHARS  4
77
#define ALIVE_CHARS  4
78
 
78
 
79
#ifdef CONFIG_KCONSOLE
79
#ifdef CONFIG_KCONSOLE
80
static char alive[ALIVE_CHARS] = "-\\|/";
80
static char alive[ALIVE_CHARS] = "-\\|/";
81
#endif
81
#endif
82
 
82
 
83
#define INIT_PREFIX      "init:"
83
#define INIT_PREFIX      "init:"
84
#define INIT_PREFIX_LEN  5
84
#define INIT_PREFIX_LEN  5
85
 
85
 
86
/** Kernel initialization thread.
86
/** Kernel initialization thread.
87
 *
87
 *
88
 * kinit takes care of higher level kernel
88
 * kinit takes care of higher level kernel
89
 * initialization (i.e. thread creation,
89
 * initialization (i.e. thread creation,
90
 * userspace initialization etc.).
90
 * userspace initialization etc.).
91
 *
91
 *
92
 * @param arg Not used.
92
 * @param arg Not used.
93
 */
93
 */
94
void kinit(void *arg)
94
void kinit(void *arg)
95
{
95
{
96
 
96
 
97
#if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE)
97
#if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE)
98
    thread_t *thread;
98
    thread_t *thread;
99
#endif
99
#endif
100
   
100
   
101
    /*
101
    /*
102
     * Detach kinit as nobody will call thread_join_timeout() on it.
102
     * Detach kinit as nobody will call thread_join_timeout() on it.
103
     */
103
     */
104
    thread_detach(THREAD);
104
    thread_detach(THREAD);
105
   
105
   
106
    interrupts_disable();
106
    interrupts_disable();
107
   
107
   
108
#ifdef CONFIG_SMP
108
#ifdef CONFIG_SMP
109
    if (config.cpu_count > 1) {
109
    if (config.cpu_count > 1) {
110
        waitq_initialize(&ap_completion_wq);
110
        waitq_initialize(&ap_completion_wq);
111
        /*
111
        /*
112
         * Create the kmp thread and wait for its completion.
112
         * Create the kmp thread and wait for its completion.
113
         * cpu1 through cpuN-1 will come up consecutively and
113
         * cpu1 through cpuN-1 will come up consecutively and
114
         * not mess together with kcpulb threads.
114
         * not mess together with kcpulb threads.
115
         * Just a beautification.
115
         * Just a beautification.
116
         */
116
         */
117
        thread = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp", true);
117
        thread = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp", true);
118
        if (thread != NULL) {
118
        if (thread != NULL) {
119
            spinlock_lock(&thread->lock);
119
            spinlock_lock(&thread->lock);
120
            thread->cpu = &cpus[0];
120
            thread->cpu = &cpus[0];
121
            spinlock_unlock(&thread->lock);
121
            spinlock_unlock(&thread->lock);
122
            thread_ready(thread);
122
            thread_ready(thread);
123
        } else
123
        } else
124
            panic("Unable to create kmp thread.");
124
            panic("Unable to create kmp thread.");
125
        thread_join(thread);
125
        thread_join(thread);
126
        thread_detach(thread);
126
        thread_detach(thread);
127
    }
127
    }
128
   
128
   
129
    if (config.cpu_count > 1) {
129
    if (config.cpu_count > 1) {
130
        count_t i;
130
        count_t i;
131
       
131
       
132
        /*
132
        /*
133
         * For each CPU, create its load balancing thread.
133
         * For each CPU, create its load balancing thread.
134
         */
134
         */
135
        for (i = 0; i < config.cpu_count; i++) {
135
        for (i = 0; i < config.cpu_count; i++) {
136
            thread = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb", true);
136
            thread = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb", true);
137
            if (thread != NULL) {
137
            if (thread != NULL) {
138
                spinlock_lock(&thread->lock);
138
                spinlock_lock(&thread->lock);
139
                thread->cpu = &cpus[i];
139
                thread->cpu = &cpus[i];
140
                spinlock_unlock(&thread->lock);
140
                spinlock_unlock(&thread->lock);
141
                thread_ready(thread);
141
                thread_ready(thread);
142
            } else
142
            } else
143
                printf("Unable to create kcpulb thread for cpu" PRIc "\n", i);
143
                printf("Unable to create kcpulb thread for cpu" PRIc "\n", i);
144
        }
144
        }
145
    }
145
    }
146
#endif /* CONFIG_SMP */
146
#endif /* CONFIG_SMP */
147
   
147
   
148
    /*
148
    /*
149
     * At this point SMP, if present, is configured.
149
     * At this point SMP, if present, is configured.
150
     */
150
     */
151
    arch_post_smp_init();
151
    arch_post_smp_init();
152
   
152
   
153
#ifdef CONFIG_KCONSOLE
153
#ifdef CONFIG_KCONSOLE
154
    if (stdin) {
154
    if (stdin) {
155
        /*
155
        /*
156
         * Create kernel console.
156
         * Create kernel console.
157
         */
157
         */
158
        thread = thread_create(kconsole_thread, NULL, TASK, 0, "kconsole", false);
158
        thread = thread_create(kconsole_thread, NULL, TASK, 0, "kconsole", false);
159
        if (thread != NULL)
159
        if (thread != NULL)
160
            thread_ready(thread);
160
            thread_ready(thread);
161
        else
161
        else
162
            printf("Unable to create kconsole thread\n");
162
            printf("Unable to create kconsole thread\n");
163
    }
163
    }
164
#endif /* CONFIG_KCONSOLE */
164
#endif /* CONFIG_KCONSOLE */
165
   
165
   
166
    interrupts_enable();
166
    interrupts_enable();
167
   
167
   
168
    /*
168
    /*
169
     * Create user tasks, load RAM disk images.
169
     * Create user tasks, load RAM disk images.
170
     */
170
     */
171
    count_t i;
171
    count_t i;
172
    program_t programs[CONFIG_INIT_TASKS];
172
    program_t programs[CONFIG_INIT_TASKS];
173
   
173
   
174
    for (i = 0; i < init.cnt; i++) {
174
    for (i = 0; i < init.cnt; i++) {
175
        if (init.tasks[i].addr % FRAME_SIZE) {
175
        if (init.tasks[i].addr % FRAME_SIZE) {
176
            printf("init[%" PRIc "].addr is not frame aligned\n", i);
176
            printf("init[%" PRIc "].addr is not frame aligned\n", i);
177
            continue;
177
            continue;
178
        }
178
        }
179
       
179
       
180
        /*
180
        /*
181
         * Construct task name from the 'init:' prefix and the
181
         * Construct task name from the 'init:' prefix and the
182
         * name stored in the init structure (if any).
182
         * name stored in the init structure (if any).
183
         */
183
         */
184
       
184
       
185
        char namebuf[TASK_NAME_BUFLEN];
185
        char namebuf[TASK_NAME_BUFLEN];
186
        char *name;
186
        char *name;
187
       
187
       
188
        name = init.tasks[i].name;
188
        name = init.tasks[i].name;
189
        if (name[0] == 0)
189
        if (name[0] == 0)
190
            name = "<unknown>";
190
            name = "<unknown>";
191
       
191
       
192
        ASSERT(TASK_NAME_BUFLEN >= INIT_PREFIX_LEN);
192
        ASSERT(TASK_NAME_BUFLEN >= INIT_PREFIX_LEN);
193
        str_ncpy(namebuf, INIT_PREFIX, TASK_NAME_BUFLEN);
193
        str_cpy(namebuf, TASK_NAME_BUFLEN, INIT_PREFIX);
194
        str_ncpy(namebuf + INIT_PREFIX_LEN, name,
194
        str_cpy(namebuf + INIT_PREFIX_LEN,
195
            TASK_NAME_BUFLEN - INIT_PREFIX_LEN);
195
            TASK_NAME_BUFLEN - INIT_PREFIX_LEN, name);
196
       
196
 
197
        int rc = program_create_from_image((void *) init.tasks[i].addr,
197
        int rc = program_create_from_image((void *) init.tasks[i].addr,
198
            namebuf, &programs[i]);
198
            namebuf, &programs[i]);
199
       
199
       
200
        if ((rc == 0) && (programs[i].task != NULL)) {
200
        if ((rc == 0) && (programs[i].task != NULL)) {
201
            /*
201
            /*
202
             * Set capabilities to init userspace tasks.
202
             * Set capabilities to init userspace tasks.
203
             */
203
             */
204
            cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER |
204
            cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER |
205
                CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
205
                CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
206
           
206
           
207
            if (!ipc_phone_0)
207
            if (!ipc_phone_0)
208
                ipc_phone_0 = &programs[i].task->answerbox;
208
                ipc_phone_0 = &programs[i].task->answerbox;
209
        } else if (rc == 0) {
209
        } else if (rc == 0) {
210
            /* It was the program loader and was registered */
210
            /* It was the program loader and was registered */
211
        } else {
211
        } else {
212
            /* RAM disk image */
212
            /* RAM disk image */
213
            int rd = init_rd((rd_header_t *) init.tasks[i].addr, init.tasks[i].size);
213
            int rd = init_rd((rd_header_t *) init.tasks[i].addr, init.tasks[i].size);
214
           
214
           
215
            if (rd != RE_OK)
215
            if (rd != RE_OK)
216
                printf("Init binary %" PRIc " not used (error %d)\n", i, rd);
216
                printf("Init binary %" PRIc " not used (error %d)\n", i, rd);
217
        }
217
        }
218
    }
218
    }
219
   
219
   
220
    /*
220
    /*
221
     * Run user tasks with small delays
221
     * Run user tasks with small delays
222
     * to avoid intermixed klog output.
222
     * to avoid intermixed klog output.
223
     *
223
     *
224
     * TODO: This certainly does not guarantee
224
     * TODO: This certainly does not guarantee
225
     *       anything, it just works in most of the
225
     *       anything, it just works in most of the
226
     *       cases. Some better way how to achieve
226
     *       cases. Some better way how to achieve
227
     *       nice klog output should be found.
227
     *       nice klog output should be found.
228
     */
228
     */
229
    for (i = 0; i < init.cnt; i++) {
229
    for (i = 0; i < init.cnt; i++) {
230
        if (programs[i].task != NULL) {
230
        if (programs[i].task != NULL) {
231
            program_ready(&programs[i]);
231
            program_ready(&programs[i]);
232
            thread_usleep(10000);
232
            thread_usleep(10000);
233
        }
233
        }
234
    }
234
    }
235
   
235
   
236
#ifdef CONFIG_KCONSOLE
236
#ifdef CONFIG_KCONSOLE
237
    if (!stdin) {
237
    if (!stdin) {
238
        thread_sleep(10);
238
        thread_sleep(10);
239
        printf("kinit: No stdin\nKernel alive: .");
239
        printf("kinit: No stdin\nKernel alive: .");
240
       
240
       
241
        unsigned int i = 0;
241
        unsigned int i = 0;
242
        while (true) {
242
        while (true) {
243
            printf("\b%c", alive[i % ALIVE_CHARS]);
243
            printf("\b%c", alive[i % ALIVE_CHARS]);
244
            thread_sleep(1);
244
            thread_sleep(1);
245
            i++;
245
            i++;
246
        }
246
        }
247
    }
247
    }
248
#endif /* CONFIG_KCONSOLE */
248
#endif /* CONFIG_KCONSOLE */
249
}
249
}
250
 
250
 
251
/** @}
251
/** @}
252
 */
252
 */
253
 
253