Annotation of prex/sys/kern/main.c, Revision 1.1.1.1
1.1 nbrk 1: /*-
2: * Copyright (c) 2005-2007, Kohsuke Ohtani
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: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: /*
31: * main.c - kernel main routine
32: */
33:
34: #include <kernel.h>
35: #include <task.h>
36: #include <thread.h>
37: #include <timer.h>
38: #include <page.h>
39: #include <kmem.h>
40: #include <vm.h>
41: #include <sched.h>
42: #include <exception.h>
43: #include <irq.h>
44: #include <ipc.h>
45: #include <device.h>
46: #include <sync.h>
47: #include <version.h>
48:
49: /*
50: * Initialization code.
51: *
52: * Called from kernel_start() routine that is
53: * implemented in the architecture dependent layer.
54: * We assume that the following machine state has
55: * been already set before this routine.
56: * - Kernel BSS section is filled with 0.
57: * - Kernel stack is configured.
58: * - All interrupts are disabled.
59: * - Minimum page table is set. (MMU systems only)
60: */
61: int
62: main(void)
63: {
64:
65: /*
66: * Do machine-dependent
67: * initialization.
68: */
69: diag_init();
70: DPRINTF((BANNER));
71: sched_lock();
72: machine_init();
73:
74: /*
75: * Initialize memory managers.
76: */
77: page_init();
78: mmu_init();
79: kmem_init();
80: vm_init();
81:
82: /*
83: * Initialize kernel core.
84: */
85: task_init();
86: thread_init();
87: sched_init();
88: exception_init();
89: timer_init();
90:
91: /*
92: * Initialize IPC related stuff.
93: */
94: object_init();
95: msg_init();
96:
97: /*
98: * Enable interrupt and
99: * initialize devices.
100: */
101: irq_init();
102: clock_init();
103: device_init();
104:
105: /*
106: * Set up boot tasks and
107: * start scheduler.
108: */
109: task_bootstrap();
110: sched_unlock();
111: thread_idle();
112:
113: /* NOTREACHED */
114: return 0;
115: }
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