1 /* $NetBSD: boot.c,v 1.20 2014/03/28 15:02:34 christos Exp $ */
2
3 /*-
4 * Copyright (c) 1999 Izumi Tsutsui. 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 /*-
28 * Copyright (C) 1999 Tsubai Masanari. All rights reserved.
29 *
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions
32 * are met:
33 * 1. Redistributions of source code must retain the above copyright
34 * notice, this list of conditions and the following disclaimer.
35 * 2. Redistributions in binary form must reproduce the above copyright
36 * notice, this list of conditions and the following disclaimer in the
37 * documentation and/or other materials provided with the distribution.
38 * 3. The name of the author may not be used to endorse or promote products
39 * derived from this software without specific prior written permission.
40 *
41 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
42 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
44 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
45 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51 */
52
53 #include <lib/libkern/libkern.h>
54 #include <lib/libsa/stand.h>
55 #include <lib/libsa/loadfile.h>
56
57 #include <machine/romcall.h>
58
59 void boot(uint32_t, uint32_t, uint32_t, uint32_t);
60 extern void ICIA(void);
61
62 /* version strings in vers.c (generated by newvers.sh) */
63 extern const char bootprog_name[];
64 extern const char bootprog_rev[];
65 extern const char bootprog_kernrev[];
66
67 char *devs[] = { "hd", "fh", "fd", NULL, NULL, "rd", "st" };
68 char *kernels[] = { "/netbsd", "/netbsd.gz", NULL };
69
70 #ifdef BOOT_DEBUG
71 # define DPRINTF printf
72 #else
73 # define DPRINTF while (0) printf
74 #endif
75
76 void
boot(uint32_t d4,uint32_t d5,uint32_t d6,uint32_t d7)77 boot(uint32_t d4, uint32_t d5, uint32_t d6, uint32_t d7)
78 {
79 int fd, i;
80 int ctlr, unit, part, type;
81 uint32_t bootdev = d6;
82 char *netbsd = (char *)d5;
83 u_long marks[MARK_MAX];
84 static char devname[32], file[32];
85 void (*entry)(void);
86 int loadflag;
87
88 printf("%s Secondary Boot, Revision %s (from NetBSD %s)\n",
89 bootprog_name, bootprog_rev, bootprog_kernrev);
90
91 /* bootname is "boot" by default. */
92 if (netbsd == NULL || strcmp(netbsd, "boot") == 0 ||
93 strcmp(netbsd, "/boot") == 0)
94 netbsd = "";
95
96 DPRINTF("howto = 0x%x\n", d7);
97 DPRINTF("bootdev = 0x%x\n", bootdev);
98 DPRINTF("bootname = %s\n", netbsd);
99 DPRINTF("maxmem = 0x%x\n", d4);
100
101 #define SET_MAGIC(bootdev, magic) ((bootdev & 0x0fffffff)| (magic << 28))
102 /* PROM monitor passes 0xa, but NEWS-OS /boot passed 0x5... */
103 bootdev = SET_MAGIC(bootdev, 5);
104
105 ctlr = BOOTDEV_CTLR(bootdev);
106 unit = BOOTDEV_UNIT(bootdev);
107 part = BOOTDEV_PART(bootdev);
108 type = BOOTDEV_TYPE(bootdev);
109
110 marks[MARK_START] = 0;
111
112 if (devs[type] == NULL) {
113 printf("unknown bootdev (0x%x)\n", bootdev);
114 return;
115 }
116
117 snprintf(devname, sizeof(devname),
118 "%s(%d,%d,%d)", devs[type], ctlr, unit, part);
119 printf("Booting %s%s\n", devname, netbsd);
120
121 /* use user specified kernel name if exists */
122 if (*netbsd) {
123 kernels[0] = netbsd;
124 kernels[1] = NULL;
125 }
126
127 loadflag = LOAD_KERNEL;
128 if (devname[0] == 'f') /* XXX */
129 loadflag &= ~LOAD_BACKWARDS;
130
131 for (i = 0; kernels[i]; i++) {
132 snprintf(file, sizeof(file), "%s%s", devname, kernels[i]);
133 DPRINTF("trying %s...\n", file);
134 fd = loadfile(file, marks, loadflag);
135 if (fd != -1)
136 break;
137 }
138 if (kernels[i] == NULL) {
139 #if 0 /* bootxx() may be overrided by loaded kernel */
140 return;
141 #else
142 rom_halt();
143 /* NOTREACHED */
144 #endif
145 }
146
147 DPRINTF("entry = 0x%x\n", (int)marks[MARK_ENTRY]);
148 DPRINTF("ssym = 0x%x\n", (int)marks[MARK_SYM]);
149 DPRINTF("esym = 0x%x\n", (int)marks[MARK_END]);
150
151 entry = (void *)marks[MARK_ENTRY];
152
153 printf("\n");
154
155 ICIA();
156 __asm volatile ("movl %0,%%d7" : : "m" (d7));
157 __asm volatile ("movl %0,%%d6" : : "m" (bootdev));
158 __asm volatile ("movl %0,%%d5" : : "m" (netbsd));
159 __asm volatile ("movl %0,%%d4" : : "m" (d4));
160 __asm volatile ("movl %0,%%d2" : : "m" (marks[MARK_END]));
161 (*entry)();
162 }
163
164 void
_rtt(void)165 _rtt(void)
166 {
167
168 rom_halt();
169 for (;;)
170 ;
171 /* NOTREACHED */
172 }
173