WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/src/main/kinit.c


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <main/kinit.h>
#include <main/uinit.h>
#include <config.h>
#include <arch.h>
#include <proc/scheduler.h>
#include <proc/task.h>
#include <proc/thread.h>
#include <panic.h>
#include <func.h>
#include <cpu.h>
#include <arch/asm.h>
#include <mm/page.h>
#include <arch/mm/page.h>
#include <mm/vm.h>
#include <mm/frame.h>
#include <print.h>
#include <memstr.h>
#include <console/console.h>
#include <console/kconsole.h>
 
#ifdef CONFIG_SMP
#include <arch/smp/mps.h>
#endif /* CONFIG_SMP */
 
#include <synch/waitq.h>
#include <synch/spinlock.h>
 
#ifdef CONFIG_TEST
#include <test.h>
#endif /* CONFIG_TEST */
 
/** Kernel initialization thread.
 *
 * kinit takes care of higher level kernel
 * initialization (i.e. thread creation,
 * userspace initialization etc.).
 *
 * @param arg Not used.
 */
void kinit(void *arg)
{
    vm_t *m;
    vm_area_t *a;
    task_t *u;
    thread_t *t;
    int i;
 
    interrupts_disable();
 
#ifdef CONFIG_SMP           
    if (config.cpu_count > 1) {
        /*
         * Create the kmp thread and wait for its completion.
         * cpu1 through cpuN-1 will come up consecutively and
         * not mess together with kcpulb threads.
         * Just a beautification.
         */
        if (t = thread_create(kmp, NULL, TASK, 0)) {
            spinlock_lock(&t->lock);
            t->flags |= X_WIRED;
            t->cpu = &cpus[0];
            spinlock_unlock(&t->lock);
            thread_ready(t);
            waitq_sleep(&kmp_completion_wq);
        }
        else panic("thread_create/kmp\n");
    }
#endif /* CONFIG_SMP */
    /*
     * Now that all CPUs are up, we can report what we've found.
     */
    for (i = 0; i < config.cpu_count; i++) {
        if (cpus[i].active)
            cpu_print_report(&cpus[i]);
        else
            printf("cpu%d: not active\n", i);
    }
 
#ifdef CONFIG_SMP
    if (config.cpu_count > 1) {
        /*
         * For each CPU, create its load balancing thread.
         */
        for (i = 0; i < config.cpu_count; i++) {
 
            if (t = thread_create(kcpulb, NULL, TASK, 0)) {
                spinlock_lock(&t->lock);           
                t->flags |= X_WIRED;
                t->cpu = &cpus[i];
                spinlock_unlock(&t->lock);
                thread_ready(t);
            }
            else panic("thread_create/kcpulb\n");
 
        }
    }
#endif /* CONFIG_SMP */
 
    /*
     * At this point SMP, if present, is configured.
     */
    arch_post_smp_init();
 
    /*
     * Create kernel console.
     */
    if (t = thread_create(kconsole, NULL, TASK, 0))
        thread_ready(t);
    else panic("thread_create/kconsole\n");
 
    interrupts_enable();
 
#ifdef CONFIG_USERSPACE
    /*
     * Create the first user task.
     */
    m = vm_create(NULL);
    if (!m)
        panic("vm_create\n");
    u = task_create(m);
    if (!u)
        panic("task_create\n");
    t = thread_create(uinit, NULL, u, THREAD_USER_STACK);
    if (!t)
        panic("thread_create\n");
 
    /*
     * Create the text vm_area and copy the userspace code there.
     */
    a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS);
    if (!a)
        panic("vm_area_create: vm_text\n");
    vm_area_map(a, m);
    memcpy((void *) PA2KA(a->mapping[0]), (void *) utext, utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE);
 
    /*
     * Create the data vm_area.
     */
    a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS);
    if (!a)
        panic("vm_area_create: vm_stack\n");
    vm_area_map(a, m); 
   
    thread_ready(t);
#endif /* CONFIG_USERSPACE */
 
#ifdef CONFIG_TEST
    test();
#endif /* CONFIG_TEST */
 
    if (!stdin) {
        while (1) {
            thread_sleep(1);
            printf("kinit... ");
        }
    }
 
}
 

Rev 518	Rev 523
1	/*	1	/*
2	* 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	#include <main/kinit.h>	29	#include <main/kinit.h>
30	#include <main/uinit.h>	30	#include <main/uinit.h>
31	#include <config.h>	31	#include <config.h>
32	#include <arch.h>	32	#include <arch.h>
33	#include <proc/scheduler.h>	33	#include <proc/scheduler.h>
34	#include <proc/task.h>	34	#include <proc/task.h>
35	#include <proc/thread.h>	35	#include <proc/thread.h>
36	#include <panic.h>	36	#include <panic.h>
37	#include <func.h>	37	#include <func.h>
38	#include <cpu.h>	38	#include <cpu.h>
39	#include <arch/asm.h>	39	#include <arch/asm.h>
40	#include <mm/page.h>	40	#include <mm/page.h>
41	#include <arch/mm/page.h>	41	#include <arch/mm/page.h>
42	#include <mm/vm.h>	42	#include <mm/vm.h>
43	#include <mm/frame.h>	43	#include <mm/frame.h>
44	#include <print.h>	44	#include <print.h>
45	#include <memstr.h>	45	#include <memstr.h>
46	#include <console/console.h>	46	#include <console/console.h>
47	#include <console/kconsole.h>	47	#include <console/kconsole.h>
48		48
49	#ifdef CONFIG_SMP	49	#ifdef CONFIG_SMP
50	#include <arch/smp/mps.h>	50	#include <arch/smp/mps.h>
51	#endif /* CONFIG_SMP */	51	#endif /* CONFIG_SMP */
52		52
53	#include <synch/waitq.h>	53	#include <synch/waitq.h>
54	#include <synch/spinlock.h>	54	#include <synch/spinlock.h>
55		55
56	#ifdef CONFIG_TEST	56	#ifdef CONFIG_TEST
57	#include <test.h>	57	#include <test.h>
58	#endif /* CONFIG_TEST */	58	#endif /* CONFIG_TEST */
59		59
-		60	/** Kernel initialization thread.
60		61	*
-		62	* kinit takes care of higher level kernel
-		63	* initialization (i.e. thread creation,
-		64	* userspace initialization etc.).
61		65	*
-		66	* @param arg Not used.
-		67	*/
62	void kinit(void *arg)	68	void kinit(void *arg)
63	{	69	{
64	vm_t *m;	70	vm_t *m;
65	vm_area_t *a;	71	vm_area_t *a;
66	task_t *u;	72	task_t *u;
67	thread_t *t;	73	thread_t *t;
68	int i;	74	int i;
69		75
70	interrupts_disable();	76	interrupts_disable();
71		77
72	#ifdef CONFIG_SMP	78	#ifdef CONFIG_SMP
73	if (config.cpu_count > 1) {	79	if (config.cpu_count > 1) {
74	/*	80	/*
75	* Create the kmp thread and wait for its completion.	81	* Create the kmp thread and wait for its completion.
76	* cpu1 through cpuN-1 will come up consecutively and	82	* cpu1 through cpuN-1 will come up consecutively and
77	* not mess together with kcpulb threads.	83	* not mess together with kcpulb threads.
78	* Just a beautification.	84	* Just a beautification.
79	*/	85	*/
80	if (t = thread_create(kmp, NULL, TASK, 0)) {	86	if (t = thread_create(kmp, NULL, TASK, 0)) {
81	spinlock_lock(&t->lock);	87	spinlock_lock(&t->lock);
82	t->flags \|= X_WIRED;	88	t->flags \|= X_WIRED;
83	t->cpu = &cpus[0];	89	t->cpu = &cpus[0];
84	spinlock_unlock(&t->lock);	90	spinlock_unlock(&t->lock);
85	thread_ready(t);	91	thread_ready(t);
86	waitq_sleep(&kmp_completion_wq);	92	waitq_sleep(&kmp_completion_wq);
87	}	93	}
88	else panic("thread_create/kmp\n");	94	else panic("thread_create/kmp\n");
89	}	95	}
90	#endif /* CONFIG_SMP */	96	#endif /* CONFIG_SMP */
91	/*	97	/*
92	* Now that all CPUs are up, we can report what we've found.	98	* Now that all CPUs are up, we can report what we've found.
93	*/	99	*/
94	for (i = 0; i < config.cpu_count; i++) {	100	for (i = 0; i < config.cpu_count; i++) {
95	if (cpus[i].active)	101	if (cpus[i].active)
96	cpu_print_report(&cpus[i]);	102	cpu_print_report(&cpus[i]);
97	else	103	else
98	printf("cpu%d: not active\n", i);	104	printf("cpu%d: not active\n", i);
99	}	105	}
100		106
101	#ifdef CONFIG_SMP	107	#ifdef CONFIG_SMP
102	if (config.cpu_count > 1) {	108	if (config.cpu_count > 1) {
103	/*	109	/*
104	* For each CPU, create its load balancing thread.	110	* For each CPU, create its load balancing thread.
105	*/	111	*/
106	for (i = 0; i < config.cpu_count; i++) {	112	for (i = 0; i < config.cpu_count; i++) {
107		113
108	if (t = thread_create(kcpulb, NULL, TASK, 0)) {	114	if (t = thread_create(kcpulb, NULL, TASK, 0)) {
109	spinlock_lock(&t->lock);	115	spinlock_lock(&t->lock);
110	t->flags \|= X_WIRED;	116	t->flags \|= X_WIRED;
111	t->cpu = &cpus[i];	117	t->cpu = &cpus[i];
112	spinlock_unlock(&t->lock);	118	spinlock_unlock(&t->lock);
113	thread_ready(t);	119	thread_ready(t);
114	}	120	}
115	else panic("thread_create/kcpulb\n");	121	else panic("thread_create/kcpulb\n");
116		122
117	}	123	}
118	}	124	}
119	#endif /* CONFIG_SMP */	125	#endif /* CONFIG_SMP */
120		126
121	/*	127	/*
122	* At this point SMP, if present, is configured.	128	* At this point SMP, if present, is configured.
123	*/	129	*/
124	arch_post_smp_init();	130	arch_post_smp_init();
125		131
126	/*	132	/*
127	* Create kernel console.	133	* Create kernel console.
128	*/	134	*/
129	if (t = thread_create(kconsole, NULL, TASK, 0))	135	if (t = thread_create(kconsole, NULL, TASK, 0))
130	thread_ready(t);	136	thread_ready(t);
131	else panic("thread_create/kconsole\n");	137	else panic("thread_create/kconsole\n");
132		138
133	interrupts_enable();	139	interrupts_enable();
134		140
135	#ifdef CONFIG_USERSPACE	141	#ifdef CONFIG_USERSPACE
136	/*	142	/*
137	* Create the first user task.	143	* Create the first user task.
138	*/	144	*/
139	m = vm_create(NULL);	145	m = vm_create(NULL);
140	if (!m)	146	if (!m)
141	panic("vm_create\n");	147	panic("vm_create\n");
142	u = task_create(m);	148	u = task_create(m);
143	if (!u)	149	if (!u)
144	panic("task_create\n");	150	panic("task_create\n");
145	t = thread_create(uinit, NULL, u, THREAD_USER_STACK);	151	t = thread_create(uinit, NULL, u, THREAD_USER_STACK);
146	if (!t)	152	if (!t)
147	panic("thread_create\n");	153	panic("thread_create\n");
148		154
149	/*	155	/*
150	* Create the text vm_area and copy the userspace code there.	156	* Create the text vm_area and copy the userspace code there.
151	*/	157	*/
152	a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS);	158	a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS);
153	if (!a)	159	if (!a)
154	panic("vm_area_create: vm_text\n");	160	panic("vm_area_create: vm_text\n");
155	vm_area_map(a, m);	161	vm_area_map(a, m);
156	memcpy((void ) PA2KA(a->mapping[0]), (void ) utext, utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE);	162	memcpy((void ) PA2KA(a->mapping[0]), (void ) utext, utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE);
157		163
158	/*	164	/*
159	* Create the data vm_area.	165	* Create the data vm_area.
160	*/	166	*/
161	a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS);	167	a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS);
162	if (!a)	168	if (!a)
163	panic("vm_area_create: vm_stack\n");	169	panic("vm_area_create: vm_stack\n");
164	vm_area_map(a, m);	170	vm_area_map(a, m);
165		171
166	thread_ready(t);	172	thread_ready(t);
167	#endif /* CONFIG_USERSPACE */	173	#endif /* CONFIG_USERSPACE */
168		174
169	#ifdef CONFIG_TEST	175	#ifdef CONFIG_TEST
170	test();	176	test();
171	#endif /* CONFIG_TEST */	177	#endif /* CONFIG_TEST */
172		178
173	if (!stdin) {	179	if (!stdin) {
174	while (1) {	180	while (1) {
175	thread_sleep(1);	181	thread_sleep(1);
176	printf("kinit... ");	182	printf("kinit... ");
177	}	183	}
178	}	184	}
179		185
180	}	186	}
181		187

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(root)/kernel/trunk/generic/src/main/kinit.c – Rev 518 → 523