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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
1248 jermar 35
 * @brief	Kernel initialization thread.
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 *
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 * This file contains kinit kernel thread which carries out
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 * high level system initialization.
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 *
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 * 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>
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>
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#include <synch/spinlock.h>
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523 jermar 75
/** Kernel initialization thread.
76
 *
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 * kinit takes care of higher level kernel
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 * initialization (i.e. thread creation,
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 * userspace initialization etc.).
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 *
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 * @param arg Not used.
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 */
1 jermar 83
void kinit(void *arg)
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{
625 palkovsky 85
	thread_t *t;
1 jermar 86
 
1576 jermar 87
	/*
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	 * Detach kinit as nobody will call thread_join_timeout() on it.
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	 */
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	thread_detach(THREAD);
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413 jermar 92
	interrupts_disable();
1 jermar 93
 
458 decky 94
#ifdef CONFIG_SMP		 	
1 jermar 95
	if (config.cpu_count > 1) {
1901 jermar 96
		waitq_initialize(&ap_completion_wq);
1 jermar 97
		/*
98
		 * Create the kmp thread and wait for its completion.
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		 * cpu1 through cpuN-1 will come up consecutively and
430 jermar 100
		 * not mess together with kcpulb threads.
1 jermar 101
		 * Just a beautification.
102
		 */
2087 jermar 103
		if ((t = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED,
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		    "kmp", true))) {
1 jermar 105
			spinlock_lock(&t->lock);
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			t->cpu = &cpus[0];
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			spinlock_unlock(&t->lock);
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			thread_ready(t);
1729 decky 109
		} else
1576 jermar 110
			panic("thread_create/kmp\n");
111
		thread_join(t);
1581 jermar 112
		thread_detach(t);
1 jermar 113
	}
458 decky 114
#endif /* CONFIG_SMP */
1 jermar 115
	/*
116
	 * Now that all CPUs are up, we can report what we've found.
117
	 */
673 jermar 118
	cpu_list();
1 jermar 119
 
458 decky 120
#ifdef CONFIG_SMP
1 jermar 121
	if (config.cpu_count > 1) {
2223 decky 122
		count_t i;
673 jermar 123
 
125 jermar 124
		/*
1 jermar 125
		 * For each CPU, create its load balancing thread.
126
		 */
127
		for (i = 0; i < config.cpu_count; i++) {
128
 
2087 jermar 129
			if ((t = thread_create(kcpulb, NULL, TASK,
130
			    THREAD_FLAG_WIRED, "kcpulb", true))) {
1 jermar 131
				spinlock_lock(&t->lock);			
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				t->cpu = &cpus[i];
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				spinlock_unlock(&t->lock);
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				thread_ready(t);
1729 decky 135
			} else
136
				panic("thread_create/kcpulb\n");
1 jermar 137
 
138
		}
139
	}
458 decky 140
#endif /* CONFIG_SMP */
1 jermar 141
 
510 jermar 142
	/*
512 jermar 143
	 * At this point SMP, if present, is configured.
144
	 */
145
	arch_post_smp_init();
146
 
147
	/*
510 jermar 148
	 * Create kernel console.
149
	 */
3181 jermar 150
	t = thread_create(kconsole, (void *) "kconsole", TASK, 0, "kconsole",
151
	    false);
2087 jermar 152
	if (t)
510 jermar 153
		thread_ready(t);
718 decky 154
	else
155
		panic("thread_create/kconsole\n");
510 jermar 156
 
413 jermar 157
	interrupts_enable();
3060 decky 158
 
159
	/*
160
	 * Create user tasks, load RAM disk images.
161
	 */
1037 decky 162
	count_t i;
3222 svoboda 163
	program_t programs[CONFIG_INIT_TASKS];
3060 decky 164
 
1037 decky 165
	for (i = 0; i < init.cnt; i++) {
1999 decky 166
		if (init.tasks[i].addr % FRAME_SIZE) {
3060 decky 167
			printf("init[%" PRIc "].addr is not frame aligned", i);
1999 decky 168
			continue;
169
		}
794 palkovsky 170
 
3222 svoboda 171
		int rc = program_create_from_image((void *) init.tasks[i].addr,
3566 svoboda 172
		    "init-bin", &programs[i]);
3222 svoboda 173
 
174
		if (rc == 0 && programs[i].task != NULL) {
1174 jermar 175
			/*
176
			 * Set capabilities to init userspace tasks.
177
			 */
3222 svoboda 178
			cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER |
2087 jermar 179
			    CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
1174 jermar 180
 
3060 decky 181
			if (!ipc_phone_0)
3222 svoboda 182
				ipc_phone_0 = &programs[i].task->answerbox;
183
		} else if (rc == 0) {
184
			/* It was the program loader and was registered */
1999 decky 185
		} else {
3222 svoboda 186
			/* RAM disk image */
3029 decky 187
			int rd = init_rd((rd_header_t *) init.tasks[i].addr,
2087 jermar 188
			    init.tasks[i].size);
1999 decky 189
 
2002 decky 190
			if (rd != RE_OK)
3181 jermar 191
				printf("Init binary %" PRIc " not used, error "
192
				    "code %d.\n", i, rd);
1999 decky 193
		}
717 decky 194
	}
3060 decky 195
 
196
	/*
197
	 * Run user tasks with reasonable delays
198
	 */
199
	for (i = 0; i < init.cnt; i++) {
3222 svoboda 200
		if (programs[i].task != NULL) {
3060 decky 201
			thread_usleep(50000);
3222 svoboda 202
			program_ready(&programs[i]);
3060 decky 203
		}
204
	}
1 jermar 205
 
517 jermar 206
	if (!stdin) {
207
		while (1) {
208
			thread_sleep(1);
209
			printf("kinit... ");
210
		}
1 jermar 211
	}
212
}
1702 cejka 213
 
1729 decky 214
/** @}
1702 cejka 215
 */