boot.c revision 1.9
1 /* $NetBSD: boot.c,v 1.9 2002/04/13 07:53:53 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (C) 1999 Tsubai Masanari. 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 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 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 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 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 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <lib/libkern/libkern.h> 30 #include <lib/libsa/stand.h> 31 #include <lib/libsa/loadfile.h> 32 33 #include <machine/apcall.h> 34 #include <machine/bootinfo.h> 35 #include <machine/cpu.h> 36 #include <machine/romcall.h> 37 38 void mips1_flushicache __P((void *, int)); 39 extern char _edata[], _end[]; 40 41 struct apbus_sysinfo *_sip; 42 int apbus; 43 44 char *devs[] = { "sd", "fh", "fd", NULL, NULL, "rd", "st" }; 45 char *kernels[] = { "/netbsd", "/netbsd.gz", NULL }; 46 47 #ifdef BOOT_DEBUG 48 # define DPRINTF printf 49 #else 50 # define DPRINTF while (0) printf 51 #endif 52 53 void 54 boot(a0, a1, a2, a3, a4, a5) 55 u_int a0, a1, a2, a3, a4, a5; 56 { 57 int fd, i; 58 char *netbsd = ""; 59 int maxmem; 60 u_long marks[MARK_MAX]; 61 char devname[32], file[32]; 62 void (*entry)(); 63 struct btinfo_symtab bi_sym; 64 struct btinfo_bootarg bi_arg; 65 struct btinfo_bootpath bi_bpath; 66 struct btinfo_systype bi_sys; 67 68 /* Clear BSS. */ 69 memset(_edata, 0, _end - _edata); 70 71 /* 72 * XXX a3 contains: 73 * maxmem (nws-3xxx) 74 * argv (apbus-based machine) 75 */ 76 if (a3 >= 0x80000000) 77 apbus = 1; 78 else 79 apbus = 0; 80 81 if (apbus) 82 _sip = (void *)a4; 83 84 printf("NetBSD/newsmips Secondary Boot\n"); 85 86 if (apbus) { 87 char *bootdev = (char *)a1; 88 int argc = a2; 89 char **argv = (char **)a3; 90 91 DPRINTF("APbus-based system\n"); 92 93 DPRINTF("argc = %d\n", argc); 94 for (i = 0; i < argc; i++) { 95 DPRINTF("argv[%d] = %s\n", i, argv[i]); 96 if (argv[i][0] != '-' && *netbsd == 0) 97 netbsd = argv[i]; 98 } 99 maxmem = _sip->apbsi_memsize; 100 maxmem -= 0x100000; /* reserve 1MB for ROM monitor */ 101 102 DPRINTF("howto = 0x%x\n", a0); 103 DPRINTF("bootdev = %s\n", (char *)a1); 104 DPRINTF("bootname = %s\n", netbsd); 105 DPRINTF("maxmem = 0x%x\n", maxmem); 106 107 /* XXX use "sonic()" instead of "tftp()" */ 108 if (strncmp(bootdev, "tftp", 4) == 0) 109 bootdev = "sonic"; 110 111 strcpy(devname, bootdev); 112 if (strchr(devname, '(') == NULL) 113 strcat(devname, "()"); 114 } else { 115 int bootdev = a1; 116 char *bootname = (char *)a2; 117 int ctlr, unit, part, type; 118 119 DPRINTF("HB system.\n"); 120 121 /* bootname is "/boot" by default on HB system. */ 122 if (bootname && strcmp(bootname, "/boot") != 0) 123 netbsd = bootname; 124 maxmem = a3; 125 126 DPRINTF("howto = 0x%x\n", a0); 127 DPRINTF("bootdev = 0x%x\n", a1); 128 DPRINTF("bootname = %s\n", netbsd); 129 DPRINTF("maxmem = 0x%x\n", maxmem); 130 131 ctlr = BOOTDEV_CTLR(bootdev); 132 unit = BOOTDEV_UNIT(bootdev); 133 part = BOOTDEV_PART(bootdev); 134 type = BOOTDEV_TYPE(bootdev); 135 136 if (devs[type] == NULL) { 137 printf("unknown bootdev (0x%x)\n", bootdev); 138 _rtt(); 139 } 140 141 sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part); 142 } 143 144 printf("Booting %s%s\n", devname, netbsd); 145 146 /* use user specified kernel name if exists */ 147 if (*netbsd) { 148 kernels[0] = netbsd; 149 kernels[1] = NULL; 150 } 151 152 marks[MARK_START] = 0; 153 154 for (i = 0; kernels[i]; i++) { 155 sprintf(file, "%s%s", devname, kernels[i]); 156 DPRINTF("trying %s...\n", file); 157 fd = loadfile(file, marks, LOAD_KERNEL); 158 if (fd != -1) 159 break; 160 } 161 if (kernels[i] == NULL) 162 _rtt(); 163 164 DPRINTF("entry = 0x%x\n", (int)marks[MARK_ENTRY]); 165 DPRINTF("ssym = 0x%x\n", (int)marks[MARK_SYM]); 166 DPRINTF("esym = 0x%x\n", (int)marks[MARK_END]); 167 168 bi_init(BOOTINFO_ADDR); 169 170 bi_sym.nsym = marks[MARK_NSYM]; 171 bi_sym.ssym = marks[MARK_SYM]; 172 bi_sym.esym = marks[MARK_END]; 173 bi_add(&bi_sym, BTINFO_SYMTAB, sizeof(bi_sym)); 174 175 bi_arg.howto = a0; 176 bi_arg.bootdev = a1; 177 bi_arg.maxmem = maxmem; 178 bi_arg.sip = (int)_sip; 179 bi_add(&bi_arg, BTINFO_BOOTARG, sizeof(bi_arg)); 180 181 strcpy(bi_bpath.bootpath, file); 182 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 183 184 bi_sys.type = apbus ? NEWS5000 : NEWS3400; /* XXX */ 185 bi_add(&bi_sys, BTINFO_SYSTYPE, sizeof(bi_sys)); 186 187 entry = (void *)marks[MARK_ENTRY]; 188 189 if (apbus) 190 apcall_flushcache(); 191 else 192 mips1_flushicache(entry, marks[MARK_SYM] - marks[MARK_ENTRY]); 193 194 printf("\n"); 195 (*entry)(a0, a1, a2, a3, a4, a5); 196 } 197 198 void 199 putchar(x) 200 int x; 201 { 202 char c = x; 203 204 if (apbus) 205 apcall_write(1, &c, 1); 206 else 207 rom_write(1, &c, 1); 208 } 209 210 int 211 getchar() 212 { 213 unsigned char c = '\0'; 214 int i; 215 216 for (;;) { 217 i = apbus ? apcall_read(1, &c, 1) : rom_read(1, &c, 1); 218 if (i == 1) 219 break; 220 if (i != -2 && i != 0) 221 return -1; 222 } 223 return c; 224 } 225 226 void 227 _rtt() 228 { 229 if (apbus) 230 apcall_exit(8); 231 else 232 rom_halt(); 233 234 for (;;); 235 } 236
Indexes created Thu Oct 02 07:10:07 GMT 2025