1 /* $NetBSD: main.c,v 1.4 2012/12/27 20:21:51 martin Exp $ */
2
3 /*-
4 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Copyright (c) 1998,2000 Doug Rabson <dfr@freebsd.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
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 #include <sys/cdefs.h>
31
32 #include <lib/libsa/stand.h>
33 #include <lib/libsa/loadfile.h>
34
35 #include "bootstrap.h"
36 #include "libski.h"
37
38 static int command_quit(int argc, char *argv[]);
39
40 extern char bootprog_name[];
41 extern char bootprog_rev[];
42 int skifs_dev_init(void);
43
44 struct bootblk_command commands[] = {
45 COMMON_COMMANDS,
46 { "quit", "exit the loader", command_quit },
47 { NULL, NULL, NULL },
48 };
49
50 struct ski_devdesc currdev; /* our current device */
51 struct arch_switch archsw; /* MI/MD interface boundary */
52
53 static int
ski_autoload(void)54 ski_autoload(void)
55 {
56
57 return (0);
58 }
59
60 void
ski_main(void)61 ski_main(void)
62 {
63 static char malloc[512*1024];
64 int i;
65
66 /*
67 * initialise the heap as early as possible. Once this is done,
68 * alloc() is usable. The stack is buried inside us, so this is
69 * safe.
70 */
71 setheap((void *)malloc, (void *)(malloc + 512*1024));
72
73 /*
74 * XXX Chicken-and-egg problem; we want to have console output
75 * early, but some console attributes may depend on reading from
76 * eg. the boot device, which we can't do yet. We can use
77 * printf() etc. once this is done.
78 */
79 cons_probe();
80
81 /*
82 * Initialise the block cache XXX: Fixme: do we need the bcache ?
83 */
84 /* bcache_init(32, 512); */ /* 16k XXX tune this */
85
86 /* Initialise skifs.c */
87
88 skifs_dev_init();
89
90 printf("\n");
91 printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
92 #if 0
93 printf("Memory: %ld k\n", memsize() / 1024);
94 #endif
95
96 /* XXX presumes that biosdisk is first in devsw */
97 currdev.d_dev = &devsw[0];
98 currdev.d_type = DEVT_DISK;
99 currdev.d_kind.skidisk.unit = 0;
100 /* XXX should be able to detect this, default to autoprobe */
101 currdev.d_kind.skidisk.slice = -1;
102 /* default to 'a' */
103 currdev.d_kind.skidisk.partition = 0;
104
105 #if 0
106 /* Create arc-specific variables */
107 bootfile = GetEnvironmentVariable(ARCENV_BOOTFILE);
108 if (bootfile)
109 setenv("bootfile", bootfile, 1);
110 #endif
111
112 env_setenv("currdev", EV_VOLATILE, ski_fmtdev(&currdev),
113 (ev_sethook_t *) ski_setcurrdev, env_nounset);
114 env_setenv("loaddev", EV_VOLATILE, ski_fmtdev(&currdev), env_noset,
115 env_nounset);
116
117 setenv("LINES", "24", 1); /* optional */
118
119 archsw.arch_autoload = ski_autoload;
120 archsw.arch_getdev = ski_getdev;
121 archsw.arch_copyin = ski_copyin;
122 archsw.arch_copyout = ski_copyout;
123 archsw.arch_readin = ski_readin;
124
125 interact(); /* doesn't return */
126
127 exit(0);
128 }
129
130 static int
command_quit(int argc,char * argv[])131 command_quit(int argc, char *argv[])
132 {
133 exit(0);
134 return (CMD_OK);
135 }
136