1 /* $NetBSD: bootmain.c,v 1.13 2010/07/17 06:27:03 isaki Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994 Takumi Nakamura. 5 * Copyright (c) 1999, 2000 Itoh Yasufumi. 6 * Copyright (c) 2001 Minoura Makoto. 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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Takumi Nakamura. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/reboot.h> 38 #include <sys/types.h> 39 #include <sys/exec_aout.h> 40 #include <ufs/ufs/dinode.h> 41 #include <ufs/ffs/fs.h> 42 #include <ufs/ufs/dir.h> 43 #include <machine/cpu.h> 44 #include <machine/bootinfo.h> 45 #ifdef SCSI_ADHOC_BOOTPART 46 #include <machine/disklabel.h> 47 #endif 48 #include <lib/libsa/stand.h> 49 50 #include "boot_ufs.h" 51 #include "readufs.h" 52 #include "exec_image.h" 53 #include "../../x68k/iodevice.h" 54 #define IODEVbase ((volatile struct IODEVICE *)INTIOBASE) 55 56 /* for debug; ��ư���Υ쥸���������äƤ��� */ 57 unsigned int startregs[16]; 58 59 #ifdef SCSI_ADHOC_BOOTPART 60 static int get_scsi_part (void); 61 #endif 62 #ifdef BOOT_DEBUG 63 static int get_scsi_host_adapter (char *); 64 #else 65 static int get_scsi_host_adapter (void); 66 #endif 67 68 #ifdef BOOT_DEBUG 69 void print_hex (unsigned int, int); 70 #endif 71 72 static int load_file (const char*, unsigned int, struct exec *); 73 static int load_file_ino (ino32_t, const char*, unsigned int, struct exec *); 74 75 void bootufs (void) __attribute__ ((__noreturn__)); 76 77 #ifdef BOOT_DEBUG 78 void 79 print_hex(unsigned int x, int l) 80 /* x: ɽ��������� */ 81 /* l: ɽ�������� */ 82 { 83 84 if (l > 0) { 85 print_hex(x >> 4, l - 1); 86 x &= 0x0F; 87 if (x > 9) 88 x += 7; 89 B_PUTC((unsigned int) '0' + x); 90 } 91 } 92 #endif 93 94 #ifdef SCSI_ADHOC_BOOTPART 95 /* 96 * get partition # from partition start position 97 */ 98 99 #define NPART 15 100 #define PARTTBL_TOP ((unsigned)4) /* pos of part inf in 512byte-blocks */ 101 #define MAXPART 6 102 const unsigned char partition_conv[MAXPART + 1] = { 0, 1, 3, 4, 5, 6, 7 }; 103 104 static int 105 get_scsi_part(void) 106 { 107 struct { 108 u_int32_t magic; /* 0x5836384B ("X68K") */ 109 u_int32_t parttotal; 110 u_int32_t diskblocks; 111 u_int32_t diskblocks2; /* backup? */ 112 struct dos_partition parttbl[NPART]; 113 unsigned char formatstr[256]; 114 unsigned char rest[512]; 115 } partbuf; 116 int i; 117 u_int32_t part_top; 118 119 #ifdef BOOT_DEBUG 120 B_PRINT("seclen: "); 121 print_hex(SCSI_BLKLEN, 8); /* 0: 256, 1: 512, 2: 1024 */ 122 B_PRINT(", topsec: "); 123 print_hex(SCSI_PARTTOP, 8); /* partition top in sector */ 124 #endif 125 /* 126 * read partition table 127 */ 128 RAW_READ0(&partbuf, PARTTBL_TOP, sizeof partbuf); 129 130 part_top = SCSI_PARTTOP >> (2 - SCSI_BLKLEN); 131 for (i = 0; i < MAXPART; i++) 132 if ((u_int32_t) partbuf.parttbl[i].dp_start == part_top) 133 goto found; 134 135 BOOT_ERROR("Can't boot from this partition"); 136 /* NOTREACHED */ 137 found: 138 #ifdef BOOT_DEBUG 139 B_PRINT("; sd"); 140 B_PUTC(ID + '0'); /* SCSI ID (not NetBSD unit #) */ 141 B_PUTC((unsigned int) partition_conv[i] + 'a'); 142 B_PRINT("\r\n"); 143 #endif 144 return partition_conv[i]; 145 } 146 #endif /* SCSI_ADHOC_BOOTPART */ 147 148 /* 149 * Check the type of SCSI interface 150 */ 151 #ifdef BOOT_DEBUG 152 static int 153 get_scsi_host_adapter(devstr) 154 char *devstr; 155 #else 156 static int 157 get_scsi_host_adapter(void) 158 #endif 159 { 160 char *bootrom; 161 int ha; 162 163 #ifdef BOOT_DEBUG 164 B_PRINT(" at "); 165 *(int *)devstr = '/' << 24 | 's' << 16 | 'p' << 8 | 'c'; 166 *(int *)(devstr + 4) = '@' << 24 | '0' << 16 | '/' << 8 | 's'; 167 *(int *)(devstr + 8) = 'd' << 24 | '@' << 16 | '0' << 8 | ','; 168 *(int *)(devstr + 12) = '0' << 24 | ':' << 16 | 'a' << 8 | '\0'; 169 #endif 170 171 bootrom = (char *) (BOOT_INFO & 0x00ffffe0); 172 /* 173 * bootrom+0x24 "SCSIIN" ... Internal SCSI (spc@0) 174 * "SCSIEX" ... External SCSI (spc@1 or mha@0) 175 */ 176 if (*(u_short *)(bootrom + 0x24 + 4) == 0x494e) { /* "IN" */ 177 #ifdef BOOT_DEBUG 178 B_PRINT("spc0"); 179 #endif 180 ha = (X68K_BOOT_SCSIIF_SPC << 4) | 0; 181 } else if (badbaddr(&IODEVbase->io_exspc.bdid)) { 182 #ifdef BOOT_DEBUG 183 B_PRINT("mha0"); 184 #endif 185 ha = (X68K_BOOT_SCSIIF_MHA << 4) | 0; 186 #ifdef BOOT_DEBUG 187 *(int *)devstr = '/' << 24 | 'm' << 16 | 'h' << 8 | 'a'; 188 #endif 189 } else { 190 #ifdef BOOT_DEBUG 191 B_PRINT("spc1"); 192 #endif 193 ha = (X68K_BOOT_SCSIIF_SPC << 4) | 1; 194 #ifdef BOOT_DEBUG 195 devstr[5] = '1'; 196 #endif 197 } 198 199 #ifdef BOOT_DEBUG 200 B_PRINT("\r\n"); 201 #endif 202 203 return ha; 204 } 205 206 static int 207 load_file(const char *path, unsigned int addr, struct exec *header) 208 { 209 210 return load_file_ino(ufs_lookup_path(path), path, addr, header); 211 } 212 213 static int 214 load_file_ino(ino32_t ino, const char *fn, unsigned int addr, struct exec *header) 215 /* fn: for message only */ 216 { 217 union ufs_dinode dinode; 218 219 /* look-up the file */ 220 if (ino == 0 || ufs_get_inode(ino, &dinode)) { 221 B_PRINT(fn); 222 B_PRINT(": not found\r\n"); 223 return 0; 224 } 225 226 ufs_read(&dinode, (void *)addr, 0, sizeof(struct exec)); 227 memcpy(header, (void *)addr, sizeof(struct exec)); 228 229 if ((N_GETMAGIC(*header) != OMAGIC) || 230 (N_GETMID(*header) != MID_M68K)) { 231 B_PRINT(fn); 232 B_PRINT(": inappropriate format"); 233 return 0; 234 } 235 236 /* read text and data */ 237 ufs_read(&dinode, ((char *)addr)-sizeof(struct exec), 0,/* XXX */ 238 header->a_text+header->a_data); 239 240 /* clear out bss */ 241 memset((char*) addr + header->a_text+header->a_data, 242 0, header->a_bss); 243 244 /* PLANNED: fallback NMAGIC loader for the kernel. */ 245 246 /* return the image size. */ 247 return header->a_text+header->a_data+header->a_bss; 248 } 249 250 251 void 252 bootufs(void) 253 { 254 int bootdev; 255 #ifdef BOOT_DEBUG 256 int i; 257 char bootdevstr[16]; 258 #endif 259 struct exec header; 260 int size; 261 extern const char bootprog_name[], bootprog_rev[]; 262 263 #ifdef BOOT_DEBUG 264 /* for debug; �쥸�����ξ��֤�ץ��Ȥ��� */ 265 for (i = 0; i < 16; i++) { 266 print_hex(startregs[i], 8); 267 B_PRINT((i & 7) == 7 ? "\r\n" : " "); 268 } 269 #endif 270 271 B_PRINT(bootprog_name); 272 B_PRINT(" rev."); B_PRINT(bootprog_rev); 273 B_PRINT("\r\n"); 274 275 /* 276 * get boot device 277 */ 278 if (BINF_ISFD(&BOOT_INFO)) { 279 /* floppy */ 280 #ifdef BOOT_DEBUG 281 *(int *)bootdevstr = ('f' << 24 | 'd' << 16 | '@' << 8 | '0') + 282 (BOOT_INFO & 3); 283 bootdevstr[4] = '\0'; 284 #endif 285 bootdev = X68K_MAKEBOOTDEV(X68K_MAJOR_FD, BOOT_INFO & 3, 286 (FDSECMINMAX.minsec.N == 3) ? 0 : 2); 287 } else { 288 /* SCSI */ 289 int part, ha; 290 291 #ifdef SCSI_ADHOC_BOOTPART 292 if (SCSI_PARTTOP == 0) 293 part = 0; 294 else 295 part = get_scsi_part(); 296 #else 297 part = 0; /* sd?a only */ 298 #endif 299 #ifndef BOOT_DEBUG 300 ha = get_scsi_host_adapter(); 301 #else 302 ha = get_scsi_host_adapter(bootdevstr); 303 bootdevstr[10] = '0' + (ID & 7); 304 bootdevstr[14] = 'a' + part; 305 #endif 306 bootdev = X68K_MAKESCSIBOOTDEV(X68K_MAJOR_SD, ha >> 4, ha & 15, 307 ID & 7, 0, part); 308 } 309 #ifdef BOOT_DEBUG 310 B_PRINT("boot device: "); 311 B_PRINT(bootdevstr); 312 #endif 313 B_PRINT("\r\n"); 314 315 /* initialize filesystem code */ 316 if (ufs_init()) { 317 BOOT_ERROR("bogus super block: " 318 "�롼�ȥե����륷���ƥब����Ƥ��ޤ���"); 319 /* NOTREACHED */ 320 } 321 #if defined(BOOT_DEBUG) && defined(USE_FFS) && defined(USE_LFS) 322 B_PRINT("file system: "); 323 B_PUTC(ufs_info.fstype == UFSTYPE_FFS ? 324 (unsigned int) 'F' : (unsigned int) 'L'); 325 B_PRINT("FS\r\n"); 326 #endif 327 328 #ifdef BOOT_DEBUG 329 B_PRINT("\r\nlooking up secondary boot... "); 330 #endif 331 332 /* 333 * Look for the 2nd stage boot. 334 */ 335 336 /* Try "boot" first */ 337 size = load_file("boot", BOOT_TEXTADDR, &header); 338 #ifdef BOOT_DEBUG 339 B_PRINT("done.\r\n"); 340 #endif 341 if (size > 0) 342 exec_image(BOOT_TEXTADDR, /* image loaded at */ 343 BOOT_TEXTADDR, /* image executed at */ 344 header.a_entry, /* entry point */ 345 size, /* image size */ 346 bootdev, RB_SINGLE); /* arguments */ 347 348 B_PRINT("can't load the secondary bootstrap.;" 349 "trying /netbsd...\r\n"); 350 351 /* fallback to /netbsd. */ 352 /* always fails since NMAGIC loader is not yet implemented. */ 353 354 size = load_file("netbsd", 0x6000, &header); 355 if (size > 0) { 356 if (*((short *)(0x6000 + header.a_entry - 2)) != 0) { 357 B_PRINT("boot interface of /netbsd is too new!\r\n"); 358 goto fail; 359 } 360 exec_image(0x6000, /* image loaded at */ 361 0, /* image executed at */ 362 header.a_entry, /* entry point */ 363 size, /* image size */ 364 bootdev, RB_SINGLE); /* arguments */ 365 /* NOTREACHED */ 366 } 367 368 fail: 369 BOOT_ERROR("can't load the secondary bootstrap nor the kernel."); 370 /* NOTREACHED */ 371 } 372