1/*- 2 * Copyright (c) 1998 Robert Nordier 3 * All rights reserved. 4 * Copyright (c) 2001 Robert Drehmel 5 * All rights reserved. 6 * Copyright (c) 2014 Nathan Whitehorn 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms are freely 10 * permitted provided that the above copyright notice and this 11 * paragraph and the following disclaimer are duplicated in all 12 * such forms. 13 * 14 * This software is provided "AS IS" and without any express or 15 * implied warranties, including, without limitation, the implied 16 * warranties of merchantability and fitness for a particular 17 * purpose. 18 */ 19 20#include <sys/cdefs.h> 21__FBSDID("$FreeBSD$"); 22 23#include <sys/param.h> 24#include <sys/dirent.h> 25#include <machine/elf.h> 26#include <machine/stdarg.h> 27 28#include <efi.h> 29#include <eficonsctl.h> 30 31#define _PATH_LOADER "/boot/loader.efi" 32#define _PATH_KERNEL "/boot/kernel/kernel" 33 34#define BSIZEMAX 16384 35 36typedef int putc_func_t(char c, void *arg); 37 38struct sp_data { 39 char *sp_buf; 40 u_int sp_len; 41 u_int sp_size; 42}; 43 44static const char digits[] = "0123456789abcdef"; 45 46static void panic(const char *fmt, ...) __dead2; 47static int printf(const char *fmt, ...); 48static int putchar(char c, void *arg); 49static int vprintf(const char *fmt, va_list ap); 50static int vsnprintf(char *str, size_t sz, const char *fmt, va_list ap); 51 52static int __printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap); 53static int __putc(char c, void *arg); 54static int __puts(const char *s, putc_func_t *putc, void *arg); 55static int __sputc(char c, void *arg); 56static char *__uitoa(char *buf, u_int val, int base); 57static char *__ultoa(char *buf, u_long val, int base); 58 59static int domount(EFI_DEVICE_PATH *device, EFI_BLOCK_IO *blkio, int quiet); 60static void load(const char *fname); 61 62EFI_SYSTEM_TABLE *systab; 63EFI_HANDLE *image; 64 65static void 66bcopy(const void *src, void *dst, size_t len) 67{ 68 const char *s = src; 69 char *d = dst; 70 71 while (len-- != 0) 72 *d++ = *s++; 73} 74 75static void 76memcpy(void *dst, const void *src, size_t len) 77{ 78 bcopy(src, dst, len); 79} 80 81static void 82bzero(void *b, size_t len) 83{ 84 char *p = b; 85 86 while (len-- != 0) 87 *p++ = 0; 88} 89 90static int 91strcmp(const char *s1, const char *s2) 92{ 93 for (; *s1 == *s2 && *s1; s1++, s2++) 94 ; 95 return ((u_char)*s1 - (u_char)*s2); 96} 97 98static EFI_GUID BlockIoProtocolGUID = BLOCK_IO_PROTOCOL; 99static EFI_GUID DevicePathGUID = DEVICE_PATH_PROTOCOL; 100static EFI_GUID LoadedImageGUID = LOADED_IMAGE_PROTOCOL; 101static EFI_GUID ConsoleControlGUID = EFI_CONSOLE_CONTROL_PROTOCOL_GUID; 102 103static EFI_BLOCK_IO *bootdev; 104static EFI_DEVICE_PATH *bootdevpath; 105static EFI_HANDLE *bootdevhandle; 106 107EFI_STATUS efi_main(EFI_HANDLE Ximage, EFI_SYSTEM_TABLE* Xsystab) 108{ 109 EFI_HANDLE handles[128]; 110 EFI_BLOCK_IO *blkio; 111 UINTN i, nparts = sizeof(handles); 112 EFI_STATUS status; 113 EFI_DEVICE_PATH *devpath; 114 EFI_BOOT_SERVICES *BS; 115 EFI_CONSOLE_CONTROL_PROTOCOL *ConsoleControl = NULL; 116 char *path = _PATH_LOADER; 117 118 systab = Xsystab; 119 image = Ximage; 120 121 BS = systab->BootServices; 122 status = BS->LocateProtocol(&ConsoleControlGUID, NULL, 123 (VOID **)&ConsoleControl); 124 if (status == EFI_SUCCESS) 125 (void)ConsoleControl->SetMode(ConsoleControl, 126 EfiConsoleControlScreenText); 127 128 printf(" \n>> FreeBSD EFI boot block\n"); 129 printf(" Loader path: %s\n", path); 130 131 status = systab->BootServices->LocateHandle(ByProtocol, 132 &BlockIoProtocolGUID, NULL, &nparts, handles); 133 nparts /= sizeof(handles[0]); 134 135 for (i = 0; i < nparts; i++) { 136 status = systab->BootServices->HandleProtocol(handles[i], 137 &DevicePathGUID, (void **)&devpath); 138 if (EFI_ERROR(status)) 139 continue; 140 141 while (!IsDevicePathEnd(NextDevicePathNode(devpath))) 142 devpath = NextDevicePathNode(devpath); 143 144 status = systab->BootServices->HandleProtocol(handles[i], 145 &BlockIoProtocolGUID, (void **)&blkio); 146 if (EFI_ERROR(status)) 147 continue; 148 149 if (!blkio->Media->LogicalPartition) 150 continue; 151 152 if (domount(devpath, blkio, 1) >= 0) 153 break; 154 } 155 156 if (i == nparts) 157 panic("No bootable partition found"); 158 159 bootdevhandle = handles[i]; 160 load(path); 161 162 panic("Load failed"); 163 164 return EFI_SUCCESS; 165} 166 167static int 168dskread(void *buf, u_int64_t lba, int nblk) 169{ 170 EFI_STATUS status; 171 172 status = bootdev->ReadBlocks(bootdev, bootdev->Media->MediaId, lba, 173 nblk * bootdev->Media->BlockSize, buf); 174 175 if (EFI_ERROR(status)) 176 return (-1); 177 178 return (0); 179} 180 181#include "ufsread.c" 182 183static ssize_t 184fsstat(ufs_ino_t inode) 185{ 186#ifndef UFS2_ONLY 187 static struct ufs1_dinode dp1; 188 ufs1_daddr_t addr1; 189#endif 190#ifndef UFS1_ONLY 191 static struct ufs2_dinode dp2; 192#endif 193 static struct fs fs; 194 static ufs_ino_t inomap; 195 char *blkbuf; 196 void *indbuf; 197 size_t n, nb, size, off, vboff; 198 ufs_lbn_t lbn; 199 ufs2_daddr_t addr2, vbaddr; 200 static ufs2_daddr_t blkmap, indmap; 201 u_int u; 202 203 blkbuf = dmadat->blkbuf; 204 indbuf = dmadat->indbuf; 205 if (!dsk_meta) { 206 inomap = 0; 207 for (n = 0; sblock_try[n] != -1; n++) { 208 if (dskread(dmadat->sbbuf, sblock_try[n] / DEV_BSIZE, 209 SBLOCKSIZE / DEV_BSIZE)) 210 return -1; 211 memcpy(&fs, dmadat->sbbuf, sizeof(struct fs)); 212 if (( 213#if defined(UFS1_ONLY) 214 fs.fs_magic == FS_UFS1_MAGIC 215#elif defined(UFS2_ONLY) 216 (fs.fs_magic == FS_UFS2_MAGIC && 217 fs.fs_sblockloc == sblock_try[n]) 218#else 219 fs.fs_magic == FS_UFS1_MAGIC || 220 (fs.fs_magic == FS_UFS2_MAGIC && 221 fs.fs_sblockloc == sblock_try[n]) 222#endif 223 ) && 224 fs.fs_bsize <= MAXBSIZE && 225 fs.fs_bsize >= sizeof(struct fs)) 226 break; 227 } 228 if (sblock_try[n] == -1) { 229 printf("Not ufs\n"); 230 return -1; 231 } 232 dsk_meta++; 233 } else 234 memcpy(&fs, dmadat->sbbuf, sizeof(struct fs)); 235 if (!inode) 236 return 0; 237 if (inomap != inode) { 238 n = IPERVBLK(&fs); 239 if (dskread(blkbuf, INO_TO_VBA(&fs, n, inode), DBPERVBLK)) 240 return -1; 241 n = INO_TO_VBO(n, inode); 242#if defined(UFS1_ONLY) 243 memcpy(&dp1, (struct ufs1_dinode *)blkbuf + n, 244 sizeof(struct ufs1_dinode)); 245#elif defined(UFS2_ONLY) 246 memcpy(&dp2, (struct ufs2_dinode *)blkbuf + n, 247 sizeof(struct ufs2_dinode)); 248#else 249 if (fs.fs_magic == FS_UFS1_MAGIC) 250 memcpy(&dp1, (struct ufs1_dinode *)blkbuf + n, 251 sizeof(struct ufs1_dinode)); 252 else 253 memcpy(&dp2, (struct ufs2_dinode *)blkbuf + n, 254 sizeof(struct ufs2_dinode)); 255#endif 256 inomap = inode; 257 fs_off = 0; 258 blkmap = indmap = 0; 259 } 260 size = DIP(di_size); 261 n = size - fs_off; 262 return (n); 263} 264 265static struct dmadat __dmadat; 266 267static int 268domount(EFI_DEVICE_PATH *device, EFI_BLOCK_IO *blkio, int quiet) 269{ 270 271 dmadat = &__dmadat; 272 bootdev = blkio; 273 bootdevpath = device; 274 if (fsread(0, NULL, 0)) { 275 if (!quiet) 276 printf("domount: can't read superblock\n"); 277 return (-1); 278 } 279 if (!quiet) 280 printf("Succesfully mounted UFS filesystem\n"); 281 return (0); 282} 283 284static void 285load(const char *fname) 286{ 287 ufs_ino_t ino; 288 EFI_STATUS status; 289 EFI_HANDLE loaderhandle; 290 EFI_LOADED_IMAGE *loaded_image; 291 void *buffer; 292 size_t bufsize; 293 294 if ((ino = lookup(fname)) == 0) { 295 printf("File %s not found\n", fname); 296 return; 297 } 298 299 bufsize = fsstat(ino); 300 status = systab->BootServices->AllocatePool(EfiLoaderData, 301 bufsize, &buffer); 302 fsread(ino, buffer, bufsize); 303 304 /* XXX: For secure boot, we need our own loader here */ 305 status = systab->BootServices->LoadImage(TRUE, image, bootdevpath, 306 buffer, bufsize, &loaderhandle); 307 308 status = systab->BootServices->HandleProtocol(loaderhandle, 309 &LoadedImageGUID, (VOID**)&loaded_image); 310 loaded_image->DeviceHandle = bootdevhandle; 311 312 status = systab->BootServices->StartImage(loaderhandle, NULL, NULL); 313} 314 315static void 316panic(const char *fmt, ...) 317{ 318 char buf[128]; 319 va_list ap; 320 321 va_start(ap, fmt); 322 vsnprintf(buf, sizeof buf, fmt, ap); 323 printf("panic: %s\n", buf); 324 va_end(ap); 325 326 while (1) {} 327} 328 329static int 330printf(const char *fmt, ...) 331{ 332 va_list ap; 333 int ret; 334 335 /* Don't annoy the user as we probe for partitions */ 336 if (strcmp(fmt,"Not ufs\n") == 0) 337 return 0; 338 339 va_start(ap, fmt); 340 ret = vprintf(fmt, ap); 341 va_end(ap); 342 return (ret); 343} 344 345static int 346putchar(char c, void *arg) 347{ 348 CHAR16 buf[2]; 349 350 if (c == '\n') { 351 buf[0] = '\r'; 352 buf[1] = 0; 353 systab->ConOut->OutputString(systab->ConOut, buf); 354 } 355 buf[0] = c; 356 buf[1] = 0; 357 systab->ConOut->OutputString(systab->ConOut, buf); 358 return (1); 359} 360 361static int 362vprintf(const char *fmt, va_list ap) 363{ 364 int ret; 365 366 ret = __printf(fmt, putchar, 0, ap); 367 return (ret); 368} 369 370static int 371vsnprintf(char *str, size_t sz, const char *fmt, va_list ap) 372{ 373 struct sp_data sp; 374 int ret; 375 376 sp.sp_buf = str; 377 sp.sp_len = 0; 378 sp.sp_size = sz; 379 ret = __printf(fmt, __sputc, &sp, ap); 380 return (ret); 381} 382 383static int 384__printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap) 385{ 386 char buf[(sizeof(long) * 8) + 1]; 387 char *nbuf; 388 u_long ul; 389 u_int ui; 390 int lflag; 391 int sflag; 392 char *s; 393 int pad; 394 int ret; 395 int c; 396 397 nbuf = &buf[sizeof buf - 1]; 398 ret = 0; 399 while ((c = *fmt++) != 0) { 400 if (c != '%') { 401 ret += putc(c, arg); 402 continue; 403 } 404 lflag = 0; 405 sflag = 0; 406 pad = 0; 407reswitch: c = *fmt++; 408 switch (c) { 409 case '#': 410 sflag = 1; 411 goto reswitch; 412 case '%': 413 ret += putc('%', arg); 414 break; 415 case 'c': 416 c = va_arg(ap, int); 417 ret += putc(c, arg); 418 break; 419 case 'd': 420 if (lflag == 0) { 421 ui = (u_int)va_arg(ap, int); 422 if (ui < (int)ui) { 423 ui = -ui; 424 ret += putc('-', arg); 425 } 426 s = __uitoa(nbuf, ui, 10); 427 } else { 428 ul = (u_long)va_arg(ap, long); 429 if (ul < (long)ul) { 430 ul = -ul; 431 ret += putc('-', arg); 432 } 433 s = __ultoa(nbuf, ul, 10); 434 } 435 ret += __puts(s, putc, arg); 436 break; 437 case 'l': 438 lflag = 1; 439 goto reswitch; 440 case 'o': 441 if (lflag == 0) { 442 ui = (u_int)va_arg(ap, u_int); 443 s = __uitoa(nbuf, ui, 8); 444 } else { 445 ul = (u_long)va_arg(ap, u_long); 446 s = __ultoa(nbuf, ul, 8); 447 } 448 ret += __puts(s, putc, arg); 449 break; 450 case 'p': 451 ul = (u_long)va_arg(ap, void *); 452 s = __ultoa(nbuf, ul, 16); 453 ret += __puts("0x", putc, arg); 454 ret += __puts(s, putc, arg); 455 break; 456 case 's': 457 s = va_arg(ap, char *); 458 ret += __puts(s, putc, arg); 459 break; 460 case 'u': 461 if (lflag == 0) { 462 ui = va_arg(ap, u_int); 463 s = __uitoa(nbuf, ui, 10); 464 } else { 465 ul = va_arg(ap, u_long); 466 s = __ultoa(nbuf, ul, 10); 467 } 468 ret += __puts(s, putc, arg); 469 break; 470 case 'x': 471 if (lflag == 0) { 472 ui = va_arg(ap, u_int); 473 s = __uitoa(nbuf, ui, 16); 474 } else { 475 ul = va_arg(ap, u_long); 476 s = __ultoa(nbuf, ul, 16); 477 } 478 if (sflag) 479 ret += __puts("0x", putc, arg); 480 ret += __puts(s, putc, arg); 481 break; 482 case '0': case '1': case '2': case '3': case '4': 483 case '5': case '6': case '7': case '8': case '9': 484 pad = pad * 10 + c - '0'; 485 goto reswitch; 486 default: 487 break; 488 } 489 } 490 return (ret); 491} 492 493static int 494__sputc(char c, void *arg) 495{ 496 struct sp_data *sp; 497 498 sp = arg; 499 if (sp->sp_len < sp->sp_size) 500 sp->sp_buf[sp->sp_len++] = c; 501 sp->sp_buf[sp->sp_len] = '\0'; 502 return (1); 503} 504 505static int 506__puts(const char *s, putc_func_t *putc, void *arg) 507{ 508 const char *p; 509 int ret; 510 511 ret = 0; 512 for (p = s; *p != '\0'; p++) 513 ret += putc(*p, arg); 514 return (ret); 515} 516 517static char * 518__uitoa(char *buf, u_int ui, int base) 519{ 520 char *p; 521 522 p = buf; 523 *p = '\0'; 524 do 525 *--p = digits[ui % base]; 526 while ((ui /= base) != 0); 527 return (p); 528} 529 530static char * 531__ultoa(char *buf, u_long ul, int base) 532{ 533 char *p; 534 535 p = buf; 536 *p = '\0'; 537 do 538 *--p = digits[ul % base]; 539 while ((ul /= base) != 0); 540 return (p); 541} 542 543