main.c revision 170854 
1/*-
2 * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
3 * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/boot/ofw/common/main.c 170854 2007-06-17 00:17:15Z marius $");
30
31#include <stand.h>
32#include "openfirm.h"
33#include "libofw.h"
34#include "bootstrap.h"
35
36struct arch_switch	archsw;		/* MI/MD interface boundary */
37
38extern char end[];
39extern char bootprog_name[];
40extern char bootprog_rev[];
41extern char bootprog_date[];
42extern char bootprog_maker[];
43
44u_int32_t	acells;
45
46static char bootargs[128];
47
48#define	HEAP_SIZE	0x80000
49
50void
51init_heap(void)
52{
53	void	*base;
54
55	if ((base = ofw_alloc_heap(HEAP_SIZE)) == (void *)0xffffffff) {
56		printf("Heap memory claim failed!\n");
57		OF_enter();
58	}
59
60	setheap(base, (void *)((int)base + HEAP_SIZE));
61}
62
63uint64_t
64memsize(void)
65{
66	phandle_t	memoryp;
67	struct ofw_reg	reg[4];
68	struct ofw_reg2	reg2[8];
69	int		i;
70	u_int64_t	sz, memsz;
71
72	memoryp = OF_instance_to_package(memory);
73
74	if (acells == 1) {
75		sz = OF_getprop(memoryp, "reg", &reg, sizeof(reg));
76		sz /= sizeof(struct ofw_reg);
77
78		for (i = 0, memsz = 0; i < sz; i++)
79			memsz += reg[i].size;
80	} else if (acells == 2) {
81		sz = OF_getprop(memoryp, "reg", &reg2, sizeof(reg2));
82		sz /= sizeof(struct ofw_reg2);
83
84		for (i = 0, memsz = 0; i < sz; i++)
85			memsz += reg2[i].size;
86	}
87
88	return (memsz);
89}
90
91int
92main(int (*openfirm)(void *))
93{
94	phandle_t	root;
95	int		i;
96	char		bootpath[64];
97	char		*ch;
98	int		bargc;
99	char		**bargv;
100
101	/*
102	 * Initalise the Open Firmware routines by giving them the entry point.
103	 */
104	OF_init(openfirm);
105
106	root = OF_finddevice("/");
107
108	acells = 1;
109	OF_getprop(root, "#address-cells", &acells, sizeof(acells));
110
111	/*
112         * Set up console.
113         */
114	cons_probe();
115
116	/*
117	 * Initialise the heap as early as possible.  Once this is done,
118	 * alloc() is usable. The stack is buried inside us, so this is
119	 * safe.
120	 */
121	init_heap();
122
123	/*
124	 * March through the device switch probing for things.
125	 */
126	for (i = 0; devsw[i] != NULL; i++)
127		if (devsw[i]->dv_init != NULL)
128			(devsw[i]->dv_init)();
129
130	printf("\n");
131	printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
132	printf("(%s, %s)\n", bootprog_maker, bootprog_date);
133	printf("Memory: %lldKB\n", memsize() / 1024);
134
135	OF_getprop(chosen, "bootpath", bootpath, 64);
136	ch = index(bootpath, ':');
137	*ch = '\0';
138	printf("Booted from: %s\n", bootpath);
139
140	printf("\n");
141
142	/*
143	 * Only parse the first bootarg if present. It should
144	 * be simple to handle extra arguments
145	 */
146	OF_getprop(chosen, "bootargs", bootargs, sizeof(bootargs));
147	bargc = 0;
148	parse(&bargc, &bargv, bootargs);
149	if (bargc == 1)
150		env_setenv("currdev", EV_VOLATILE, bargv[0], ofw_setcurrdev,
151		    env_nounset);
152	else
153		env_setenv("currdev", EV_VOLATILE, bootpath,
154			   ofw_setcurrdev, env_nounset);
155	env_setenv("loaddev", EV_VOLATILE, bootpath, env_noset,
156	    env_nounset);
157	setenv("LINES", "24", 1);		/* optional */
158
159	archsw.arch_getdev = ofw_getdev;
160	archsw.arch_copyin = ofw_copyin;
161	archsw.arch_copyout = ofw_copyout;
162	archsw.arch_readin = ofw_readin;
163	archsw.arch_autoload = ofw_autoload;
164
165	interact();				/* doesn't return */
166
167	OF_exit();
168
169	return 0;
170}
171
172COMMAND_SET(halt, "halt", "halt the system", command_halt);
173
174static int
175command_halt(int argc, char *argv[])
176{
177
178	OF_exit();
179	return (CMD_OK);
180}
181
182COMMAND_SET(memmap, "memmap", "print memory map", command_memmap);
183
184int
185command_memmap(int argc, char **argv)
186{
187
188	ofw_memmap(acells);
189	return (CMD_OK);
190}
191