boot.c revision 1.18
1 /* $NetBSD: boot.c,v 1.18 2010/08/25 16:35:57 christos 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 boot(uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t); 39 40 void mips1_flushicache(void *, int); 41 extern char _edata[], _end[]; 42 43 /* version strings in vers.c (generated by newvers.sh) */ 44 extern const char bootprog_name[]; 45 extern const char bootprog_rev[]; 46 extern const char bootprog_date[]; 47 extern const char bootprog_maker[]; 48 49 struct apbus_sysinfo *_sip; 50 int apbus; 51 52 char *devs[] = { "sd", "fh", "fd", NULL, NULL, "rd", "st" }; 53 char *kernels[] = { "/netbsd", "/netbsd.gz", NULL }; 54 55 #ifdef BOOT_DEBUG 56 # define DPRINTF printf 57 #else 58 # define DPRINTF while (0) printf 59 #endif 60 61 void 62 boot(uint32_t a0, uint32_t a1, uint32_t a2, uint32_t a3, uint32_t a4, 63 uint32_t a5) 64 { 65 int fd, i; 66 char *netbsd = ""; 67 int maxmem; 68 u_long marks[MARK_MAX]; 69 char devname[32], file[32]; 70 void (*entry)(uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, 71 uint32_t); 72 struct btinfo_symtab bi_sym; 73 struct btinfo_bootarg bi_arg; 74 struct btinfo_bootpath bi_bpath; 75 struct btinfo_systype bi_sys; 76 int loadflag; 77 78 /* Clear BSS. */ 79 memset(_edata, 0, _end - _edata); 80 81 /* 82 * XXX a3 contains: 83 * maxmem (nws-3xxx) 84 * argv (apbus-based machine) 85 */ 86 if (a3 >= 0x80000000) 87 apbus = 1; 88 else 89 apbus = 0; 90 91 if (apbus) 92 _sip = (void *)a4; 93 94 printf("%s Secondary Boot, Revision %s\n", 95 bootprog_name, bootprog_rev); 96 printf("(%s, %s)\n", bootprog_maker, bootprog_date); 97 98 if (apbus) { 99 char *bootdev = (char *)a1; 100 int argc = a2; 101 char **argv = (char **)a3; 102 103 DPRINTF("APbus-based system\n"); 104 105 DPRINTF("argc = %d\n", argc); 106 for (i = 0; i < argc; i++) { 107 DPRINTF("argv[%d] = %s\n", i, argv[i]); 108 if (argv[i][0] != '-' && *netbsd == 0) 109 netbsd = argv[i]; 110 } 111 maxmem = _sip->apbsi_memsize; 112 maxmem -= 0x100000; /* reserve 1MB for ROM monitor */ 113 114 DPRINTF("howto = 0x%x\n", a0); 115 DPRINTF("bootdev = %s\n", (char *)a1); 116 DPRINTF("bootname = %s\n", netbsd); 117 DPRINTF("maxmem = 0x%x\n", maxmem); 118 119 /* XXX use "sonic()" instead of "tftp()" */ 120 if (strncmp(bootdev, "tftp", 4) == 0) 121 bootdev = "sonic"; 122 123 strcpy(devname, bootdev); 124 if (strchr(devname, '(') == NULL) 125 strcat(devname, "()"); 126 } else { 127 int bootdev = a1; 128 char *bootname = (char *)a2; 129 int ctlr, unit, part, type; 130 131 DPRINTF("HB system.\n"); 132 133 /* bootname is "/boot" by default on HB system. */ 134 if (bootname && strcmp(bootname, "/boot") != 0) 135 netbsd = bootname; 136 maxmem = a3; 137 138 DPRINTF("howto = 0x%x\n", a0); 139 DPRINTF("bootdev = 0x%x\n", a1); 140 DPRINTF("bootname = %s\n", netbsd); 141 DPRINTF("maxmem = 0x%x\n", maxmem); 142 143 ctlr = BOOTDEV_CTLR(bootdev); 144 unit = BOOTDEV_UNIT(bootdev); 145 part = BOOTDEV_PART(bootdev); 146 type = BOOTDEV_TYPE(bootdev); 147 148 if (devs[type] == NULL) { 149 printf("unknown bootdev (0x%x)\n", bootdev); 150 _rtt(); 151 } 152 153 sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part); 154 } 155 156 printf("Booting %s%s\n", devname, netbsd); 157 158 /* use user specified kernel name if exists */ 159 if (*netbsd) { 160 kernels[0] = netbsd; 161 kernels[1] = NULL; 162 } 163 164 loadflag = LOAD_KERNEL; 165 if (devname[0] == 'f') /* XXX */ 166 loadflag &= ~LOAD_BACKWARDS; 167 168 marks[MARK_START] = 0; 169 170 for (i = 0; kernels[i]; i++) { 171 sprintf(file, "%s%s", devname, kernels[i]); 172 DPRINTF("trying %s...\n", file); 173 fd = loadfile(file, marks, loadflag); 174 if (fd != -1) 175 break; 176 } 177 if (kernels[i] == NULL) 178 _rtt(); 179 180 DPRINTF("entry = 0x%x\n", (int)marks[MARK_ENTRY]); 181 DPRINTF("ssym = 0x%x\n", (int)marks[MARK_SYM]); 182 DPRINTF("esym = 0x%x\n", (int)marks[MARK_END]); 183 184 bi_init(BOOTINFO_ADDR); 185 186 bi_sym.nsym = marks[MARK_NSYM]; 187 bi_sym.ssym = marks[MARK_SYM]; 188 bi_sym.esym = marks[MARK_END]; 189 bi_add(&bi_sym, BTINFO_SYMTAB, sizeof(bi_sym)); 190 191 bi_arg.howto = a0; 192 bi_arg.bootdev = a1; 193 bi_arg.maxmem = maxmem; 194 bi_arg.sip = (int)_sip; 195 bi_add(&bi_arg, BTINFO_BOOTARG, sizeof(bi_arg)); 196 197 strcpy(bi_bpath.bootpath, file); 198 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 199 200 bi_sys.type = apbus ? NEWS5000 : NEWS3400; /* XXX */ 201 bi_add(&bi_sys, BTINFO_SYSTYPE, sizeof(bi_sys)); 202 203 entry = (void *)marks[MARK_ENTRY]; 204 205 if (apbus) 206 apcall_flushcache(); 207 else 208 mips1_flushicache(entry, marks[MARK_SYM] - marks[MARK_ENTRY]); 209 210 printf("\n"); 211 (*entry)(a0, a1, a2, a3, a4, a5); 212 } 213 214 void 215 putchar(int x) 216 { 217 char c = x; 218 219 if (apbus) 220 apcall_write(1, &c, 1); 221 else 222 rom_write(1, &c, 1); 223 } 224 225 int 226 getchar(void) 227 { 228 unsigned char c = '\0'; 229 int i; 230 231 for (;;) { 232 i = apbus ? apcall_read(1, &c, 1) : rom_read(1, &c, 1); 233 if (i == 1) 234 break; 235 if (i != -2 && i != 0) 236 return -1; 237 } 238 return c; 239 } 240 241 void 242 _rtt(void) 243 { 244 if (apbus) 245 apcall_exit(8); 246 else 247 rom_halt(); 248 249 for (;;); 250 } 251
Indexes created Thu Oct 02 10:09:58 GMT 2025