1/*- 2 * Copyright (c) 2009-2010 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Semihalf under sponsorship from 6 * the FreeBSD Foundation. 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD$"); 32 33#include <stand.h> 34#include <fdt.h> 35#include <libfdt.h> 36#include <sys/param.h> 37#include <sys/linker.h> 38#include <machine/elf.h> 39 40#include "bootstrap.h" 41#include "glue.h" 42 43#ifdef DEBUG 44#define debugf(fmt, args...) do { printf("%s(): ", __func__); \ 45 printf(fmt,##args); } while (0) 46#else 47#define debugf(fmt, args...) 48#endif 49 50#define FDT_CWD_LEN 256 51#define FDT_MAX_DEPTH 6 52 53#define FDT_PROP_SEP " = " 54 55#define STR(number) #number 56#define STRINGIFY(number) STR(number) 57 58#define COPYOUT(s,d,l) archsw.arch_copyout(s, d, l) 59#define COPYIN(s,d,l) archsw.arch_copyin(s, d, l) 60 61#define FDT_STATIC_DTB_SYMBOL "fdt_static_dtb" 62 63#define CMD_REQUIRES_BLOB 0x01 64 65/* Location of FDT yet to be loaded. */ 66/* This may be in read-only memory, so can't be manipulated directly. */ 67static struct fdt_header *fdt_to_load = NULL; 68/* Location of FDT on heap. */ 69/* This is the copy we actually manipulate. */ 70static struct fdt_header *fdtp = NULL; 71/* Size of FDT blob */ 72static size_t fdtp_size = 0; 73/* Location of FDT in kernel or module. */ 74/* This won't be set if FDT is loaded from disk or memory. */ 75/* If it is set, we'll update it when fdt_copy() gets called. */ 76static vm_offset_t fdtp_va = 0; 77 78static int fdt_load_dtb(vm_offset_t va); 79 80static int fdt_cmd_nyi(int argc, char *argv[]); 81 82static int fdt_cmd_addr(int argc, char *argv[]); 83static int fdt_cmd_mkprop(int argc, char *argv[]); 84static int fdt_cmd_cd(int argc, char *argv[]); 85static int fdt_cmd_hdr(int argc, char *argv[]); 86static int fdt_cmd_ls(int argc, char *argv[]); 87static int fdt_cmd_prop(int argc, char *argv[]); 88static int fdt_cmd_pwd(int argc, char *argv[]); 89static int fdt_cmd_rm(int argc, char *argv[]); 90static int fdt_cmd_mknode(int argc, char *argv[]); 91static int fdt_cmd_mres(int argc, char *argv[]); 92 93typedef int cmdf_t(int, char *[]); 94 95struct cmdtab { 96 char *name; 97 cmdf_t *handler; 98 int flags; 99}; 100 101static const struct cmdtab commands[] = { 102 { "addr", &fdt_cmd_addr, 0 }, 103 { "alias", &fdt_cmd_nyi, 0 }, 104 { "cd", &fdt_cmd_cd, CMD_REQUIRES_BLOB }, 105 { "header", &fdt_cmd_hdr, CMD_REQUIRES_BLOB }, 106 { "ls", &fdt_cmd_ls, CMD_REQUIRES_BLOB }, 107 { "mknode", &fdt_cmd_mknode, CMD_REQUIRES_BLOB }, 108 { "mkprop", &fdt_cmd_mkprop, CMD_REQUIRES_BLOB }, 109 { "mres", &fdt_cmd_mres, CMD_REQUIRES_BLOB }, 110 { "prop", &fdt_cmd_prop, CMD_REQUIRES_BLOB }, 111 { "pwd", &fdt_cmd_pwd, CMD_REQUIRES_BLOB }, 112 { "rm", &fdt_cmd_rm, CMD_REQUIRES_BLOB }, 113 { NULL, NULL } 114}; 115 116static char cwd[FDT_CWD_LEN] = "/"; 117 118static vm_offset_t 119fdt_find_static_dtb() 120{ 121 Elf_Ehdr *ehdr; 122 Elf_Shdr *shdr; 123 Elf_Sym sym; 124 vm_offset_t strtab, symtab, fdt_start; 125 uint64_t offs; 126 struct preloaded_file *kfp; 127 struct file_metadata *md; 128 char *strp; 129 int i, sym_count; 130 131 debugf("fdt_find_static_dtb()\n"); 132 133 sym_count = symtab = strtab = 0; 134 strp = NULL; 135 136 offs = __elfN(relocation_offset); 137 138 kfp = file_findfile(NULL, NULL); 139 if (kfp == NULL) 140 return (0); 141 142 /* Locate the dynamic symbols and strtab. */ 143 md = file_findmetadata(kfp, MODINFOMD_ELFHDR); 144 if (md == NULL) 145 return (0); 146 ehdr = (Elf_Ehdr *)md->md_data; 147 148 md = file_findmetadata(kfp, MODINFOMD_SHDR); 149 if (md == NULL) 150 return (0); 151 shdr = (Elf_Shdr *)md->md_data; 152 153 for (i = 0; i < ehdr->e_shnum; ++i) { 154 if (shdr[i].sh_type == SHT_DYNSYM && symtab == 0) { 155 symtab = shdr[i].sh_addr + offs; 156 sym_count = shdr[i].sh_size / sizeof(Elf_Sym); 157 } else if (shdr[i].sh_type == SHT_STRTAB && strtab == 0) { 158 strtab = shdr[i].sh_addr + offs; 159 } 160 } 161 162 /* 163 * The most efficent way to find a symbol would be to calculate a 164 * hash, find proper bucket and chain, and thus find a symbol. 165 * However, that would involve code duplication (e.g. for hash 166 * function). So we're using simpler and a bit slower way: we're 167 * iterating through symbols, searching for the one which name is 168 * 'equal' to 'fdt_static_dtb'. To speed up the process a little bit, 169 * we are eliminating symbols type of which is not STT_NOTYPE, or(and) 170 * those which binding attribute is not STB_GLOBAL. 171 */ 172 fdt_start = 0; 173 while (sym_count > 0 && fdt_start == 0) { 174 COPYOUT(symtab, &sym, sizeof(sym)); 175 symtab += sizeof(sym); 176 --sym_count; 177 if (ELF_ST_BIND(sym.st_info) != STB_GLOBAL || 178 ELF_ST_TYPE(sym.st_info) != STT_NOTYPE) 179 continue; 180 strp = strdupout(strtab + sym.st_name); 181 if (strcmp(strp, FDT_STATIC_DTB_SYMBOL) == 0) 182 fdt_start = (vm_offset_t)sym.st_value + offs; 183 free(strp); 184 } 185 return (fdt_start); 186} 187 188static int 189fdt_load_dtb(vm_offset_t va) 190{ 191 struct fdt_header header; 192 int err; 193 194 debugf("fdt_load_dtb(0x%08jx)\n", (uintmax_t)va); 195 196 COPYOUT(va, &header, sizeof(header)); 197 err = fdt_check_header(&header); 198 if (err < 0) { 199 if (err == -FDT_ERR_BADVERSION) 200 sprintf(command_errbuf, 201 "incompatible blob version: %d, should be: %d", 202 fdt_version(fdtp), FDT_LAST_SUPPORTED_VERSION); 203 204 else 205 sprintf(command_errbuf, "error validating blob: %s", 206 fdt_strerror(err)); 207 return (1); 208 } 209 210 /* 211 * Release previous blob 212 */ 213 if (fdtp) 214 free(fdtp); 215 216 fdtp_size = fdt_totalsize(&header); 217 fdtp = malloc(fdtp_size); 218 219 if (fdtp == NULL) { 220 command_errmsg = "can't allocate memory for device tree copy"; 221 return (1); 222 } 223 224 fdtp_va = va; 225 COPYOUT(va, fdtp, fdtp_size); 226 debugf("DTB blob found at 0x%jx, size: 0x%jx\n", (uintmax_t)va, (uintmax_t)fdtp_size); 227 228 return (0); 229} 230 231static int 232fdt_load_dtb_addr(struct fdt_header *header) 233{ 234 int err; 235 236 debugf("fdt_load_dtb_addr(0x%p)\n", header); 237 238 fdtp_size = fdt_totalsize(header); 239 err = fdt_check_header(header); 240 if (err < 0) { 241 sprintf(command_errbuf, "error validating blob: %s", 242 fdt_strerror(err)); 243 return (err); 244 } 245 free(fdtp); 246 if ((fdtp = malloc(fdtp_size)) == NULL) { 247 command_errmsg = "can't allocate memory for device tree copy"; 248 return (1); 249 } 250 251 fdtp_va = 0; // Don't write this back into module or kernel. 252 bcopy(header, fdtp, fdtp_size); 253 return (0); 254} 255 256static int 257fdt_load_dtb_file(const char * filename) 258{ 259 struct preloaded_file *bfp, *oldbfp; 260 int err; 261 262 debugf("fdt_load_dtb_file(%s)\n", filename); 263 264 oldbfp = file_findfile(NULL, "dtb"); 265 266 /* Attempt to load and validate a new dtb from a file. */ 267 if ((bfp = file_loadraw(filename, "dtb")) == NULL) { 268 sprintf(command_errbuf, "failed to load file '%s'", filename); 269 return (1); 270 } 271 if ((err = fdt_load_dtb(bfp->f_addr)) != 0) { 272 file_discard(bfp); 273 return (err); 274 } 275 276 /* A new dtb was validated, discard any previous file. */ 277 if (oldbfp) 278 file_discard(oldbfp); 279 return (0); 280} 281 282int 283fdt_setup_fdtp() 284{ 285 struct preloaded_file *bfp; 286 struct fdt_header *hdr; 287 const char *s; 288 char *p; 289 vm_offset_t va; 290 291 debugf("fdt_setup_fdtp()\n"); 292 293 /* If we already loaded a file, use it. */ 294 if ((bfp = file_findfile(NULL, "dtb")) != NULL) { 295 if (fdt_load_dtb(bfp->f_addr) == 0) { 296 printf("Using DTB from loaded file '%s'.\n", 297 bfp->f_name); 298 return (0); 299 } 300 } 301 302 /* If we were given the address of a valid blob in memory, use it. */ 303 if (fdt_to_load != NULL) { 304 if (fdt_load_dtb_addr(fdt_to_load) == 0) { 305 printf("Using DTB from memory address 0x%08X.\n", 306 (unsigned int)fdt_to_load); 307 return (0); 308 } 309 } 310 311 /* 312 * If the U-boot environment contains a variable giving the address of a 313 * valid blob in memory, use it. Board vendors use both fdtaddr and 314 * fdt_addr names. 315 */ 316 s = ub_env_get("fdtaddr"); 317 if (s == NULL) 318 s = ub_env_get("fdt_addr"); 319 if (s != NULL && *s != '\0') { 320 hdr = (struct fdt_header *)strtoul(s, &p, 16); 321 if (*p == '\0') { 322 if (fdt_load_dtb_addr(hdr) == 0) { 323 printf("Using DTB provided by U-Boot at " 324 "address 0x%p.\n", hdr); 325 return (0); 326 } 327 } 328 } 329 330 /* 331 * If the U-boot environment contains a variable giving the name of a 332 * file, use it if we can load and validate it. 333 */ 334 s = ub_env_get("fdtfile"); 335 if (s == NULL) 336 s = ub_env_get("fdt_file"); 337 if (s != NULL && *s != '\0') { 338 if (fdt_load_dtb_file(s) == 0) { 339 printf("Loaded DTB from file '%s'.\n", s); 340 return (0); 341 } 342 } 343 344 /* If there is a dtb compiled into the kernel, use it. */ 345 if ((va = fdt_find_static_dtb()) != 0) { 346 if (fdt_load_dtb(va) == 0) { 347 printf("Using DTB compiled into kernel.\n"); 348 return (0); 349 } 350 } 351 352 command_errmsg = "No device tree blob found!\n"; 353 return (1); 354} 355 356#define fdt_strtovect(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \ 357 (cellbuf), (lim), (cellsize), 0); 358 359/* Force using base 16 */ 360#define fdt_strtovectx(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \ 361 (cellbuf), (lim), (cellsize), 16); 362 363static int 364_fdt_strtovect(char *str, void *cellbuf, int lim, unsigned char cellsize, 365 uint8_t base) 366{ 367 char *buf = str; 368 char *end = str + strlen(str) - 2; 369 uint32_t *u32buf = NULL; 370 uint8_t *u8buf = NULL; 371 int cnt = 0; 372 373 if (cellsize == sizeof(uint32_t)) 374 u32buf = (uint32_t *)cellbuf; 375 else 376 u8buf = (uint8_t *)cellbuf; 377 378 if (lim == 0) 379 return (0); 380 381 while (buf < end) { 382 383 /* Skip white whitespace(s)/separators */ 384 while (!isxdigit(*buf) && buf < end) 385 buf++; 386 387 if (u32buf != NULL) 388 u32buf[cnt] = 389 cpu_to_fdt32((uint32_t)strtol(buf, NULL, base)); 390 391 else 392 u8buf[cnt] = (uint8_t)strtol(buf, NULL, base); 393 394 if (cnt + 1 <= lim - 1) 395 cnt++; 396 else 397 break; 398 buf++; 399 /* Find another number */ 400 while ((isxdigit(*buf) || *buf == 'x') && buf < end) 401 buf++; 402 } 403 return (cnt); 404} 405 406#define TMP_MAX_ETH 8 407 408static void 409fixup_ethernet(const char *env, char *ethstr, int *eth_no, int len) 410{ 411 char *end, *str; 412 uint8_t tmp_addr[6]; 413 int i, n; 414 415 /* Extract interface number */ 416 i = strtol(env + 3, &end, 10); 417 if (end == (env + 3)) 418 /* 'ethaddr' means interface 0 address */ 419 n = 0; 420 else 421 n = i; 422 423 if (n > TMP_MAX_ETH) 424 return; 425 426 str = ub_env_get(env); 427 428 /* Convert macaddr string into a vector of uints */ 429 fdt_strtovectx(str, &tmp_addr, 6, sizeof(uint8_t)); 430 if (n != 0) { 431 i = strlen(env) - 7; 432 strncpy(ethstr + 8, env + 3, i); 433 } 434 /* Set actual property to a value from vect */ 435 fdt_setprop(fdtp, fdt_path_offset(fdtp, ethstr), 436 "local-mac-address", &tmp_addr, 6 * sizeof(uint8_t)); 437 438 /* Clear ethernet..XXXX.. string */ 439 bzero(ethstr + 8, len - 8); 440 441 if (n + 1 > *eth_no) 442 *eth_no = n + 1; 443} 444 445static void 446fixup_cpubusfreqs(unsigned long cpufreq, unsigned long busfreq) 447{ 448 int lo, o = 0, o2, maxo = 0, depth; 449 const uint32_t zero = 0; 450 451 /* We want to modify every subnode of /cpus */ 452 o = fdt_path_offset(fdtp, "/cpus"); 453 if (o < 0) 454 return; 455 456 /* maxo should contain offset of node next to /cpus */ 457 depth = 0; 458 maxo = o; 459 while (depth != -1) 460 maxo = fdt_next_node(fdtp, maxo, &depth); 461 462 /* Find CPU frequency properties */ 463 o = fdt_node_offset_by_prop_value(fdtp, o, "clock-frequency", 464 &zero, sizeof(uint32_t)); 465 466 o2 = fdt_node_offset_by_prop_value(fdtp, o, "bus-frequency", &zero, 467 sizeof(uint32_t)); 468 469 lo = MIN(o, o2); 470 471 while (o != -FDT_ERR_NOTFOUND && o2 != -FDT_ERR_NOTFOUND) { 472 473 o = fdt_node_offset_by_prop_value(fdtp, lo, 474 "clock-frequency", &zero, sizeof(uint32_t)); 475 476 o2 = fdt_node_offset_by_prop_value(fdtp, lo, "bus-frequency", 477 &zero, sizeof(uint32_t)); 478 479 /* We're only interested in /cpus subnode(s) */ 480 if (lo > maxo) 481 break; 482 483 fdt_setprop_inplace_cell(fdtp, lo, "clock-frequency", 484 (uint32_t)cpufreq); 485 486 fdt_setprop_inplace_cell(fdtp, lo, "bus-frequency", 487 (uint32_t)busfreq); 488 489 lo = MIN(o, o2); 490 } 491} 492 493static int 494fdt_reg_valid(uint32_t *reg, int len, int addr_cells, int size_cells) 495{ 496 int cells_in_tuple, i, tuples, tuple_size; 497 uint32_t cur_start, cur_size; 498 499 cells_in_tuple = (addr_cells + size_cells); 500 tuple_size = cells_in_tuple * sizeof(uint32_t); 501 tuples = len / tuple_size; 502 if (tuples == 0) 503 return (EINVAL); 504 505 for (i = 0; i < tuples; i++) { 506 if (addr_cells == 2) 507 cur_start = fdt64_to_cpu(reg[i * cells_in_tuple]); 508 else 509 cur_start = fdt32_to_cpu(reg[i * cells_in_tuple]); 510 511 if (size_cells == 2) 512 cur_size = fdt64_to_cpu(reg[i * cells_in_tuple + 2]); 513 else 514 cur_size = fdt32_to_cpu(reg[i * cells_in_tuple + 1]); 515 516 if (cur_size == 0) 517 return (EINVAL); 518 519 debugf(" reg#%d (start: 0x%0x size: 0x%0x) valid!\n", 520 i, cur_start, cur_size); 521 } 522 return (0); 523} 524 525static void 526fixup_memory(struct sys_info *si) 527{ 528 struct mem_region *curmr; 529 uint32_t addr_cells, size_cells; 530 uint32_t *addr_cellsp, *reg, *size_cellsp; 531 int err, i, len, memory, realmrno, root; 532 uint8_t *buf, *sb; 533 uint64_t rstart, rsize; 534 int reserved; 535 536 root = fdt_path_offset(fdtp, "/"); 537 if (root < 0) { 538 sprintf(command_errbuf, "Could not find root node !"); 539 return; 540 } 541 542 memory = fdt_path_offset(fdtp, "/memory"); 543 if (memory <= 0) { 544 /* Create proper '/memory' node. */ 545 memory = fdt_add_subnode(fdtp, root, "memory"); 546 if (memory <= 0) { 547 sprintf(command_errbuf, "Could not fixup '/memory' " 548 "node, error code : %d!\n", memory); 549 return; 550 } 551 552 err = fdt_setprop(fdtp, memory, "device_type", "memory", 553 sizeof("memory")); 554 555 if (err < 0) 556 return; 557 } 558 559 addr_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#address-cells", 560 NULL); 561 size_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#size-cells", NULL); 562 563 if (addr_cellsp == NULL || size_cellsp == NULL) { 564 sprintf(command_errbuf, "Could not fixup '/memory' node : " 565 "%s %s property not found in root node!\n", 566 (!addr_cellsp) ? "#address-cells" : "", 567 (!size_cellsp) ? "#size-cells" : ""); 568 return; 569 } 570 571 addr_cells = fdt32_to_cpu(*addr_cellsp); 572 size_cells = fdt32_to_cpu(*size_cellsp); 573 574 /* 575 * Convert memreserve data to memreserve property 576 * Check if property already exists 577 */ 578 reserved = fdt_num_mem_rsv(fdtp); 579 if (reserved && 580 (fdt_getprop(fdtp, root, "memreserve", NULL) == NULL)) { 581 len = (addr_cells + size_cells) * reserved * sizeof(uint32_t); 582 sb = buf = (uint8_t *)malloc(len); 583 if (!buf) 584 return; 585 586 bzero(buf, len); 587 588 for (i = 0; i < reserved; i++) { 589 curmr = &si->mr[i]; 590 if (fdt_get_mem_rsv(fdtp, i, &rstart, &rsize)) 591 break; 592 if (rsize) { 593 /* Ensure endianess, and put cells into a buffer */ 594 if (addr_cells == 2) 595 *(uint64_t *)buf = 596 cpu_to_fdt64(rstart); 597 else 598 *(uint32_t *)buf = 599 cpu_to_fdt32(rstart); 600 601 buf += sizeof(uint32_t) * addr_cells; 602 if (size_cells == 2) 603 *(uint64_t *)buf = 604 cpu_to_fdt64(rsize); 605 else 606 *(uint32_t *)buf = 607 cpu_to_fdt32(rsize); 608 609 buf += sizeof(uint32_t) * size_cells; 610 } 611 } 612 613 /* Set property */ 614 if ((err = fdt_setprop(fdtp, root, "memreserve", sb, len)) < 0) 615 printf("Could not fixup 'memreserve' property.\n"); 616 617 free(sb); 618 } 619 620 /* Count valid memory regions entries in sysinfo. */ 621 realmrno = si->mr_no; 622 for (i = 0; i < si->mr_no; i++) 623 if (si->mr[i].start == 0 && si->mr[i].size == 0) 624 realmrno--; 625 626 if (realmrno == 0) { 627 sprintf(command_errbuf, "Could not fixup '/memory' node : " 628 "sysinfo doesn't contain valid memory regions info!\n"); 629 return; 630 } 631 632 if ((reg = (uint32_t *)fdt_getprop(fdtp, memory, "reg", 633 &len)) != NULL) { 634 635 if (fdt_reg_valid(reg, len, addr_cells, size_cells) == 0) 636 /* 637 * Do not apply fixup if existing 'reg' property 638 * seems to be valid. 639 */ 640 return; 641 } 642 643 len = (addr_cells + size_cells) * realmrno * sizeof(uint32_t); 644 sb = buf = (uint8_t *)malloc(len); 645 if (!buf) 646 return; 647 648 bzero(buf, len); 649 650 for (i = 0; i < si->mr_no; i++) { 651 curmr = &si->mr[i]; 652 if (curmr->size != 0) { 653 /* Ensure endianess, and put cells into a buffer */ 654 if (addr_cells == 2) 655 *(uint64_t *)buf = 656 cpu_to_fdt64(curmr->start); 657 else 658 *(uint32_t *)buf = 659 cpu_to_fdt32(curmr->start); 660 661 buf += sizeof(uint32_t) * addr_cells; 662 if (size_cells == 2) 663 *(uint64_t *)buf = 664 cpu_to_fdt64(curmr->size); 665 else 666 *(uint32_t *)buf = 667 cpu_to_fdt32(curmr->size); 668 669 buf += sizeof(uint32_t) * size_cells; 670 } 671 } 672 673 /* Set property */ 674 if ((err = fdt_setprop(fdtp, memory, "reg", sb, len)) < 0) 675 sprintf(command_errbuf, "Could not fixup '/memory' node.\n"); 676 677 free(sb); 678} 679 680static void 681fixup_stdout(const char *env) 682{ 683 const char *str; 684 char *ptr; 685 int serialno; 686 int len, no, sero; 687 const struct fdt_property *prop; 688 char *tmp[10]; 689 690 str = ub_env_get(env); 691 ptr = (char *)str + strlen(str) - 1; 692 while (ptr > str && isdigit(*(str - 1))) 693 str--; 694 695 if (ptr == str) 696 return; 697 698 serialno = (int)strtol(ptr, NULL, 0); 699 no = fdt_path_offset(fdtp, "/chosen"); 700 if (no < 0) 701 return; 702 703 prop = fdt_get_property(fdtp, no, "stdout", &len); 704 705 /* If /chosen/stdout does not extist, create it */ 706 if (prop == NULL || (prop != NULL && len == 0)) { 707 708 bzero(tmp, 10 * sizeof(char)); 709 strcpy((char *)&tmp, "serial"); 710 if (strlen(ptr) > 3) 711 /* Serial number too long */ 712 return; 713 714 strncpy((char *)tmp + 6, ptr, 3); 715 sero = fdt_path_offset(fdtp, (const char *)tmp); 716 if (sero < 0) 717 /* 718 * If serial device we're trying to assign 719 * stdout to doesn't exist in DT -- return. 720 */ 721 return; 722 723 fdt_setprop(fdtp, no, "stdout", &tmp, 724 strlen((char *)&tmp) + 1); 725 fdt_setprop(fdtp, no, "stdin", &tmp, 726 strlen((char *)&tmp) + 1); 727 } 728} 729 730/* 731 * Locate the blob, fix it up and return its location. 732 */ 733static int 734fdt_fixup(void) 735{ 736 const char *env; 737 char *ethstr; 738 int chosen, eth_no, len; 739 struct sys_info *si; 740 741 env = NULL; 742 eth_no = 0; 743 ethstr = NULL; 744 len = 0; 745 746 debugf("fdt_fixup()\n"); 747 748 if (fdtp == NULL && fdt_setup_fdtp() != 0) 749 return (0); 750 751 /* Create /chosen node (if not exists) */ 752 if ((chosen = fdt_subnode_offset(fdtp, 0, "chosen")) == 753 -FDT_ERR_NOTFOUND) 754 chosen = fdt_add_subnode(fdtp, 0, "chosen"); 755 756 /* Value assigned to fixup-applied does not matter. */ 757 if (fdt_getprop(fdtp, chosen, "fixup-applied", NULL)) 758 return (1); 759 760 /* Acquire sys_info */ 761 si = ub_get_sys_info(); 762 763 while ((env = ub_env_enum(env)) != NULL) { 764 if (strncmp(env, "eth", 3) == 0 && 765 strncmp(env + (strlen(env) - 4), "addr", 4) == 0) { 766 /* 767 * Handle Ethernet addrs: parse uboot env eth%daddr 768 */ 769 770 if (!eth_no) { 771 /* 772 * Check how many chars we will need to store 773 * maximal eth iface number. 774 */ 775 len = strlen(STRINGIFY(TMP_MAX_ETH)) + 776 strlen("ethernet"); 777 778 /* 779 * Reserve mem for string "ethernet" and len 780 * chars for iface no. 781 */ 782 ethstr = (char *)malloc(len * sizeof(char)); 783 bzero(ethstr, len * sizeof(char)); 784 strcpy(ethstr, "ethernet0"); 785 } 786 787 /* Modify blob */ 788 fixup_ethernet(env, ethstr, ð_no, len); 789 790 } else if (strcmp(env, "consoledev") == 0) 791 fixup_stdout(env); 792 } 793 794 /* Modify cpu(s) and bus clock frequenties in /cpus node [Hz] */ 795 fixup_cpubusfreqs(si->clk_cpu, si->clk_bus); 796 797 /* Fixup memory regions */ 798 fixup_memory(si); 799 800 fdt_setprop(fdtp, chosen, "fixup-applied", NULL, 0); 801 return (1); 802} 803 804/* 805 * Copy DTB blob to specified location and return size 806 */ 807int 808fdt_copy(vm_offset_t va) 809{ 810 int err; 811 debugf("fdt_copy va 0x%08x\n", va); 812 if (fdtp == NULL) { 813 err = fdt_setup_fdtp(); 814 if (err) { 815 printf("No valid device tree blob found!\n"); 816 return (0); 817 } 818 } 819 820 if (fdt_fixup() == 0) 821 return (0); 822 823 if (fdtp_va != 0) { 824 /* Overwrite the FDT with the fixed version. */ 825 /* XXX Is this really appropriate? */ 826 COPYIN(fdtp, fdtp_va, fdtp_size); 827 } 828 COPYIN(fdtp, va, fdtp_size); 829 return (fdtp_size); 830} 831 832 833 834int 835command_fdt_internal(int argc, char *argv[]) 836{ 837 cmdf_t *cmdh; 838 int flags; 839 char *cmd; 840 int i, err; 841 842 if (argc < 2) { 843 command_errmsg = "usage is 'fdt <command> [<args>]"; 844 return (CMD_ERROR); 845 } 846 847 /* 848 * Validate fdt <command>. 849 */ 850 cmd = strdup(argv[1]); 851 i = 0; 852 cmdh = NULL; 853 while (!(commands[i].name == NULL)) { 854 if (strcmp(cmd, commands[i].name) == 0) { 855 /* found it */ 856 cmdh = commands[i].handler; 857 flags = commands[i].flags; 858 break; 859 } 860 i++; 861 } 862 if (cmdh == NULL) { 863 command_errmsg = "unknown command"; 864 return (CMD_ERROR); 865 } 866 867 if (flags & CMD_REQUIRES_BLOB) { 868 /* 869 * Check if uboot env vars were parsed already. If not, do it now. 870 */ 871 if (fdt_fixup() == 0) 872 return (CMD_ERROR); 873 } 874 875 /* 876 * Call command handler. 877 */ 878 err = (*cmdh)(argc, argv); 879 880 return (err); 881} 882 883static int 884fdt_cmd_addr(int argc, char *argv[]) 885{ 886 struct preloaded_file *fp; 887 struct fdt_header *hdr; 888 const char *addr; 889 char *cp; 890 891 fdt_to_load = NULL; 892 893 if (argc > 2) 894 addr = argv[2]; 895 else { 896 sprintf(command_errbuf, "no address specified"); 897 return (CMD_ERROR); 898 } 899 900 hdr = (struct fdt_header *)strtoul(addr, &cp, 16); 901 if (cp == addr) { 902 sprintf(command_errbuf, "Invalid address: %s", addr); 903 return (CMD_ERROR); 904 } 905 906 while ((fp = file_findfile(NULL, "dtb")) != NULL) { 907 file_discard(fp); 908 } 909 910 fdt_to_load = hdr; 911 return (CMD_OK); 912} 913 914static int 915fdt_cmd_cd(int argc, char *argv[]) 916{ 917 char *path; 918 char tmp[FDT_CWD_LEN]; 919 int len, o; 920 921 path = (argc > 2) ? argv[2] : "/"; 922 923 if (path[0] == '/') { 924 len = strlen(path); 925 if (len >= FDT_CWD_LEN) 926 goto fail; 927 } else { 928 /* Handle path specification relative to cwd */ 929 len = strlen(cwd) + strlen(path) + 1; 930 if (len >= FDT_CWD_LEN) 931 goto fail; 932 933 strcpy(tmp, cwd); 934 strcat(tmp, "/"); 935 strcat(tmp, path); 936 path = tmp; 937 } 938 939 o = fdt_path_offset(fdtp, path); 940 if (o < 0) { 941 sprintf(command_errbuf, "could not find node: '%s'", path); 942 return (CMD_ERROR); 943 } 944 945 strcpy(cwd, path); 946 return (CMD_OK); 947 948fail: 949 sprintf(command_errbuf, "path too long: %d, max allowed: %d", 950 len, FDT_CWD_LEN - 1); 951 return (CMD_ERROR); 952} 953 954static int 955fdt_cmd_hdr(int argc __unused, char *argv[] __unused) 956{ 957 char line[80]; 958 int ver; 959 960 if (fdtp == NULL) { 961 command_errmsg = "no device tree blob pointer?!"; 962 return (CMD_ERROR); 963 } 964 965 ver = fdt_version(fdtp); 966 pager_open(); 967 sprintf(line, "\nFlattened device tree header (%p):\n", fdtp); 968 pager_output(line); 969 sprintf(line, " magic = 0x%08x\n", fdt_magic(fdtp)); 970 pager_output(line); 971 sprintf(line, " size = %d\n", fdt_totalsize(fdtp)); 972 pager_output(line); 973 sprintf(line, " off_dt_struct = 0x%08x\n", 974 fdt_off_dt_struct(fdtp)); 975 pager_output(line); 976 sprintf(line, " off_dt_strings = 0x%08x\n", 977 fdt_off_dt_strings(fdtp)); 978 pager_output(line); 979 sprintf(line, " off_mem_rsvmap = 0x%08x\n", 980 fdt_off_mem_rsvmap(fdtp)); 981 pager_output(line); 982 sprintf(line, " version = %d\n", ver); 983 pager_output(line); 984 sprintf(line, " last compatible version = %d\n", 985 fdt_last_comp_version(fdtp)); 986 pager_output(line); 987 if (ver >= 2) { 988 sprintf(line, " boot_cpuid = %d\n", 989 fdt_boot_cpuid_phys(fdtp)); 990 pager_output(line); 991 } 992 if (ver >= 3) { 993 sprintf(line, " size_dt_strings = %d\n", 994 fdt_size_dt_strings(fdtp)); 995 pager_output(line); 996 } 997 if (ver >= 17) { 998 sprintf(line, " size_dt_struct = %d\n", 999 fdt_size_dt_struct(fdtp)); 1000 pager_output(line); 1001 } 1002 pager_close(); 1003 1004 return (CMD_OK); 1005} 1006 1007static int 1008fdt_cmd_ls(int argc, char *argv[]) 1009{ 1010 const char *prevname[FDT_MAX_DEPTH] = { NULL }; 1011 const char *name; 1012 char *path; 1013 int i, o, depth, len; 1014 1015 path = (argc > 2) ? argv[2] : NULL; 1016 if (path == NULL) 1017 path = cwd; 1018 1019 o = fdt_path_offset(fdtp, path); 1020 if (o < 0) { 1021 sprintf(command_errbuf, "could not find node: '%s'", path); 1022 return (CMD_ERROR); 1023 } 1024 1025 for (depth = 0; 1026 (o >= 0) && (depth >= 0); 1027 o = fdt_next_node(fdtp, o, &depth)) { 1028 1029 name = fdt_get_name(fdtp, o, &len); 1030 1031 if (depth > FDT_MAX_DEPTH) { 1032 printf("max depth exceeded: %d\n", depth); 1033 continue; 1034 } 1035 1036 prevname[depth] = name; 1037 1038 /* Skip root (i = 1) when printing devices */ 1039 for (i = 1; i <= depth; i++) { 1040 if (prevname[i] == NULL) 1041 break; 1042 1043 if (strcmp(cwd, "/") == 0) 1044 printf("/"); 1045 printf("%s", prevname[i]); 1046 } 1047 printf("\n"); 1048 } 1049 1050 return (CMD_OK); 1051} 1052 1053static __inline int 1054isprint(int c) 1055{ 1056 1057 return (c >= ' ' && c <= 0x7e); 1058} 1059 1060static int 1061fdt_isprint(const void *data, int len, int *count) 1062{ 1063 const char *d; 1064 char ch; 1065 int yesno, i; 1066 1067 if (len == 0) 1068 return (0); 1069 1070 d = (const char *)data; 1071 if (d[len - 1] != '\0') 1072 return (0); 1073 1074 *count = 0; 1075 yesno = 1; 1076 for (i = 0; i < len; i++) { 1077 ch = *(d + i); 1078 if (isprint(ch) || (ch == '\0' && i > 0)) { 1079 /* Count strings */ 1080 if (ch == '\0') 1081 (*count)++; 1082 continue; 1083 } 1084 1085 yesno = 0; 1086 break; 1087 } 1088 1089 return (yesno); 1090} 1091 1092static int 1093fdt_data_str(const void *data, int len, int count, char **buf) 1094{ 1095 char *b, *tmp; 1096 const char *d; 1097 int buf_len, i, l; 1098 1099 /* 1100 * Calculate the length for the string and allocate memory. 1101 * 1102 * Note that 'len' already includes at least one terminator. 1103 */ 1104 buf_len = len; 1105 if (count > 1) { 1106 /* 1107 * Each token had already a terminator buried in 'len', but we 1108 * only need one eventually, don't count space for these. 1109 */ 1110 buf_len -= count - 1; 1111 1112 /* Each consecutive token requires a ", " separator. */ 1113 buf_len += count * 2; 1114 } 1115 1116 /* Add some space for surrounding double quotes. */ 1117 buf_len += count * 2; 1118 1119 /* Note that string being put in 'tmp' may be as big as 'buf_len'. */ 1120 b = (char *)malloc(buf_len); 1121 tmp = (char *)malloc(buf_len); 1122 if (b == NULL) 1123 goto error; 1124 1125 if (tmp == NULL) { 1126 free(b); 1127 goto error; 1128 } 1129 1130 b[0] = '\0'; 1131 1132 /* 1133 * Now that we have space, format the string. 1134 */ 1135 i = 0; 1136 do { 1137 d = (const char *)data + i; 1138 l = strlen(d) + 1; 1139 1140 sprintf(tmp, "\"%s\"%s", d, 1141 (i + l) < len ? ", " : ""); 1142 strcat(b, tmp); 1143 1144 i += l; 1145 1146 } while (i < len); 1147 *buf = b; 1148 1149 free(tmp); 1150 1151 return (0); 1152error: 1153 return (1); 1154} 1155 1156static int 1157fdt_data_cell(const void *data, int len, char **buf) 1158{ 1159 char *b, *tmp; 1160 const uint32_t *c; 1161 int count, i, l; 1162 1163 /* Number of cells */ 1164 count = len / 4; 1165 1166 /* 1167 * Calculate the length for the string and allocate memory. 1168 */ 1169 1170 /* Each byte translates to 2 output characters */ 1171 l = len * 2; 1172 if (count > 1) { 1173 /* Each consecutive cell requires a " " separator. */ 1174 l += (count - 1) * 1; 1175 } 1176 /* Each cell will have a "0x" prefix */ 1177 l += count * 2; 1178 /* Space for surrounding <> and terminator */ 1179 l += 3; 1180 1181 b = (char *)malloc(l); 1182 tmp = (char *)malloc(l); 1183 if (b == NULL) 1184 goto error; 1185 1186 if (tmp == NULL) { 1187 free(b); 1188 goto error; 1189 } 1190 1191 b[0] = '\0'; 1192 strcat(b, "<"); 1193 1194 for (i = 0; i < len; i += 4) { 1195 c = (const uint32_t *)((const uint8_t *)data + i); 1196 sprintf(tmp, "0x%08x%s", fdt32_to_cpu(*c), 1197 i < (len - 4) ? " " : ""); 1198 strcat(b, tmp); 1199 } 1200 strcat(b, ">"); 1201 *buf = b; 1202 1203 free(tmp); 1204 1205 return (0); 1206error: 1207 return (1); 1208} 1209 1210static int 1211fdt_data_bytes(const void *data, int len, char **buf) 1212{ 1213 char *b, *tmp; 1214 const char *d; 1215 int i, l; 1216 1217 /* 1218 * Calculate the length for the string and allocate memory. 1219 */ 1220 1221 /* Each byte translates to 2 output characters */ 1222 l = len * 2; 1223 if (len > 1) 1224 /* Each consecutive byte requires a " " separator. */ 1225 l += (len - 1) * 1; 1226 /* Each byte will have a "0x" prefix */ 1227 l += len * 2; 1228 /* Space for surrounding [] and terminator. */ 1229 l += 3; 1230 1231 b = (char *)malloc(l); 1232 tmp = (char *)malloc(l); 1233 if (b == NULL) 1234 goto error; 1235 1236 if (tmp == NULL) { 1237 free(b); 1238 goto error; 1239 } 1240 1241 b[0] = '\0'; 1242 strcat(b, "["); 1243 1244 for (i = 0, d = data; i < len; i++) { 1245 sprintf(tmp, "0x%02x%s", d[i], i < len - 1 ? " " : ""); 1246 strcat(b, tmp); 1247 } 1248 strcat(b, "]"); 1249 *buf = b; 1250 1251 free(tmp); 1252 1253 return (0); 1254error: 1255 return (1); 1256} 1257 1258static int 1259fdt_data_fmt(const void *data, int len, char **buf) 1260{ 1261 int count; 1262 1263 if (len == 0) { 1264 *buf = NULL; 1265 return (1); 1266 } 1267 1268 if (fdt_isprint(data, len, &count)) 1269 return (fdt_data_str(data, len, count, buf)); 1270 1271 else if ((len % 4) == 0) 1272 return (fdt_data_cell(data, len, buf)); 1273 1274 else 1275 return (fdt_data_bytes(data, len, buf)); 1276} 1277 1278static int 1279fdt_prop(int offset) 1280{ 1281 char *line, *buf; 1282 const struct fdt_property *prop; 1283 const char *name; 1284 const void *data; 1285 int len, rv; 1286 1287 line = NULL; 1288 prop = fdt_offset_ptr(fdtp, offset, sizeof(*prop)); 1289 if (prop == NULL) 1290 return (1); 1291 1292 name = fdt_string(fdtp, fdt32_to_cpu(prop->nameoff)); 1293 len = fdt32_to_cpu(prop->len); 1294 1295 rv = 0; 1296 buf = NULL; 1297 if (len == 0) { 1298 /* Property without value */ 1299 line = (char *)malloc(strlen(name) + 2); 1300 if (line == NULL) { 1301 rv = 2; 1302 goto out2; 1303 } 1304 sprintf(line, "%s\n", name); 1305 goto out1; 1306 } 1307 1308 /* 1309 * Process property with value 1310 */ 1311 data = prop->data; 1312 1313 if (fdt_data_fmt(data, len, &buf) != 0) { 1314 rv = 3; 1315 goto out2; 1316 } 1317 1318 line = (char *)malloc(strlen(name) + strlen(FDT_PROP_SEP) + 1319 strlen(buf) + 2); 1320 if (line == NULL) { 1321 sprintf(command_errbuf, "could not allocate space for string"); 1322 rv = 4; 1323 goto out2; 1324 } 1325 1326 sprintf(line, "%s" FDT_PROP_SEP "%s\n", name, buf); 1327 1328out1: 1329 pager_open(); 1330 pager_output(line); 1331 pager_close(); 1332 1333out2: 1334 if (buf) 1335 free(buf); 1336 1337 if (line) 1338 free(line); 1339 1340 return (rv); 1341} 1342 1343static int 1344fdt_modprop(int nodeoff, char *propname, void *value, char mode) 1345{ 1346 uint32_t cells[100]; 1347 char *buf; 1348 int len, rv; 1349 const struct fdt_property *p; 1350 1351 p = fdt_get_property(fdtp, nodeoff, propname, NULL); 1352 1353 if (p != NULL) { 1354 if (mode == 1) { 1355 /* Adding inexistant value in mode 1 is forbidden */ 1356 sprintf(command_errbuf, "property already exists!"); 1357 return (CMD_ERROR); 1358 } 1359 } else if (mode == 0) { 1360 sprintf(command_errbuf, "property does not exist!"); 1361 return (CMD_ERROR); 1362 } 1363 len = strlen(value); 1364 rv = 0; 1365 buf = (char *)value; 1366 1367 switch (*buf) { 1368 case '&': 1369 /* phandles */ 1370 break; 1371 case '<': 1372 /* Data cells */ 1373 len = fdt_strtovect(buf, (void *)&cells, 100, 1374 sizeof(uint32_t)); 1375 1376 rv = fdt_setprop(fdtp, nodeoff, propname, &cells, 1377 len * sizeof(uint32_t)); 1378 break; 1379 case '[': 1380 /* Data bytes */ 1381 len = fdt_strtovect(buf, (void *)&cells, 100, 1382 sizeof(uint8_t)); 1383 1384 rv = fdt_setprop(fdtp, nodeoff, propname, &cells, 1385 len * sizeof(uint8_t)); 1386 break; 1387 case '"': 1388 default: 1389 /* Default -- string */ 1390 rv = fdt_setprop_string(fdtp, nodeoff, propname, value); 1391 break; 1392 } 1393 1394 if (rv != 0) { 1395 if (rv == -FDT_ERR_NOSPACE) 1396 sprintf(command_errbuf, 1397 "Device tree blob is too small!\n"); 1398 else 1399 sprintf(command_errbuf, 1400 "Could not add/modify property!\n"); 1401 } 1402 return (rv); 1403} 1404 1405/* Merge strings from argv into a single string */ 1406static int 1407fdt_merge_strings(int argc, char *argv[], int start, char **buffer) 1408{ 1409 char *buf; 1410 int i, idx, sz; 1411 1412 *buffer = NULL; 1413 sz = 0; 1414 1415 for (i = start; i < argc; i++) 1416 sz += strlen(argv[i]); 1417 1418 /* Additional bytes for whitespaces between args */ 1419 sz += argc - start; 1420 1421 buf = (char *)malloc(sizeof(char) * sz); 1422 bzero(buf, sizeof(char) * sz); 1423 1424 if (buf == NULL) { 1425 sprintf(command_errbuf, "could not allocate space " 1426 "for string"); 1427 return (1); 1428 } 1429 1430 idx = 0; 1431 for (i = start, idx = 0; i < argc; i++) { 1432 strcpy(buf + idx, argv[i]); 1433 idx += strlen(argv[i]); 1434 buf[idx] = ' '; 1435 idx++; 1436 } 1437 buf[sz - 1] = '\0'; 1438 *buffer = buf; 1439 return (0); 1440} 1441 1442/* Extract offset and name of node/property from a given path */ 1443static int 1444fdt_extract_nameloc(char **pathp, char **namep, int *nodeoff) 1445{ 1446 int o; 1447 char *path = *pathp, *name = NULL, *subpath = NULL; 1448 1449 subpath = strrchr(path, '/'); 1450 if (subpath == NULL) { 1451 o = fdt_path_offset(fdtp, cwd); 1452 name = path; 1453 path = (char *)&cwd; 1454 } else { 1455 *subpath = '\0'; 1456 if (strlen(path) == 0) 1457 path = cwd; 1458 1459 name = subpath + 1; 1460 o = fdt_path_offset(fdtp, path); 1461 } 1462 1463 if (strlen(name) == 0) { 1464 sprintf(command_errbuf, "name not specified"); 1465 return (1); 1466 } 1467 if (o < 0) { 1468 sprintf(command_errbuf, "could not find node: '%s'", path); 1469 return (1); 1470 } 1471 *namep = name; 1472 *nodeoff = o; 1473 *pathp = path; 1474 return (0); 1475} 1476 1477static int 1478fdt_cmd_prop(int argc, char *argv[]) 1479{ 1480 char *path, *propname, *value; 1481 int o, next, depth, rv; 1482 uint32_t tag; 1483 1484 path = (argc > 2) ? argv[2] : NULL; 1485 1486 value = NULL; 1487 1488 if (argc > 3) { 1489 /* Merge property value strings into one */ 1490 if (fdt_merge_strings(argc, argv, 3, &value) != 0) 1491 return (CMD_ERROR); 1492 } else 1493 value = NULL; 1494 1495 if (path == NULL) 1496 path = cwd; 1497 1498 rv = CMD_OK; 1499 1500 if (value) { 1501 /* If value is specified -- try to modify prop. */ 1502 if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1503 return (CMD_ERROR); 1504 1505 rv = fdt_modprop(o, propname, value, 0); 1506 if (rv) 1507 return (CMD_ERROR); 1508 return (CMD_OK); 1509 1510 } 1511 /* User wants to display properties */ 1512 o = fdt_path_offset(fdtp, path); 1513 1514 if (o < 0) { 1515 sprintf(command_errbuf, "could not find node: '%s'", path); 1516 rv = CMD_ERROR; 1517 goto out; 1518 } 1519 1520 depth = 0; 1521 while (depth >= 0) { 1522 tag = fdt_next_tag(fdtp, o, &next); 1523 switch (tag) { 1524 case FDT_NOP: 1525 break; 1526 case FDT_PROP: 1527 if (depth > 1) 1528 /* Don't process properties of nested nodes */ 1529 break; 1530 1531 if (fdt_prop(o) != 0) { 1532 sprintf(command_errbuf, "could not process " 1533 "property"); 1534 rv = CMD_ERROR; 1535 goto out; 1536 } 1537 break; 1538 case FDT_BEGIN_NODE: 1539 depth++; 1540 if (depth > FDT_MAX_DEPTH) { 1541 printf("warning: nesting too deep: %d\n", 1542 depth); 1543 goto out; 1544 } 1545 break; 1546 case FDT_END_NODE: 1547 depth--; 1548 if (depth == 0) 1549 /* 1550 * This is the end of our starting node, force 1551 * the loop finish. 1552 */ 1553 depth--; 1554 break; 1555 } 1556 o = next; 1557 } 1558out: 1559 return (rv); 1560} 1561 1562static int 1563fdt_cmd_mkprop(int argc, char *argv[]) 1564{ 1565 int o; 1566 char *path, *propname, *value; 1567 1568 path = (argc > 2) ? argv[2] : NULL; 1569 1570 value = NULL; 1571 1572 if (argc > 3) { 1573 /* Merge property value strings into one */ 1574 if (fdt_merge_strings(argc, argv, 3, &value) != 0) 1575 return (CMD_ERROR); 1576 } else 1577 value = NULL; 1578 1579 if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1580 return (CMD_ERROR); 1581 1582 if (fdt_modprop(o, propname, value, 1)) 1583 return (CMD_ERROR); 1584 1585 return (CMD_OK); 1586} 1587 1588static int 1589fdt_cmd_rm(int argc, char *argv[]) 1590{ 1591 int o, rv; 1592 char *path = NULL, *propname; 1593 1594 if (argc > 2) 1595 path = argv[2]; 1596 else { 1597 sprintf(command_errbuf, "no node/property name specified"); 1598 return (CMD_ERROR); 1599 } 1600 1601 o = fdt_path_offset(fdtp, path); 1602 if (o < 0) { 1603 /* If node not found -- try to find & delete property */ 1604 if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1605 return (CMD_ERROR); 1606 1607 if ((rv = fdt_delprop(fdtp, o, propname)) != 0) { 1608 sprintf(command_errbuf, "could not delete" 1609 "%s\n", (rv == -FDT_ERR_NOTFOUND) ? 1610 "(property/node does not exist)" : ""); 1611 return (CMD_ERROR); 1612 1613 } else 1614 return (CMD_OK); 1615 } 1616 /* If node exists -- remove node */ 1617 rv = fdt_del_node(fdtp, o); 1618 if (rv) { 1619 sprintf(command_errbuf, "could not delete node"); 1620 return (CMD_ERROR); 1621 } 1622 return (CMD_OK); 1623} 1624 1625static int 1626fdt_cmd_mknode(int argc, char *argv[]) 1627{ 1628 int o, rv; 1629 char *path = NULL, *nodename = NULL; 1630 1631 if (argc > 2) 1632 path = argv[2]; 1633 else { 1634 sprintf(command_errbuf, "no node name specified"); 1635 return (CMD_ERROR); 1636 } 1637 1638 if (fdt_extract_nameloc(&path, &nodename, &o) != 0) 1639 return (CMD_ERROR); 1640 1641 rv = fdt_add_subnode(fdtp, o, nodename); 1642 1643 if (rv < 0) { 1644 if (rv == -FDT_ERR_NOSPACE) 1645 sprintf(command_errbuf, 1646 "Device tree blob is too small!\n"); 1647 else 1648 sprintf(command_errbuf, 1649 "Could not add node!\n"); 1650 return (CMD_ERROR); 1651 } 1652 return (CMD_OK); 1653} 1654 1655static int 1656fdt_cmd_pwd(int argc, char *argv[]) 1657{ 1658 char line[FDT_CWD_LEN]; 1659 1660 pager_open(); 1661 sprintf(line, "%s\n", cwd); 1662 pager_output(line); 1663 pager_close(); 1664 return (CMD_OK); 1665} 1666 1667static int 1668fdt_cmd_mres(int argc, char *argv[]) 1669{ 1670 uint64_t start, size; 1671 int i, total; 1672 char line[80]; 1673 1674 pager_open(); 1675 total = fdt_num_mem_rsv(fdtp); 1676 if (total > 0) { 1677 pager_output("Reserved memory regions:\n"); 1678 for (i = 0; i < total; i++) { 1679 fdt_get_mem_rsv(fdtp, i, &start, &size); 1680 sprintf(line, "reg#%d: (start: 0x%jx, size: 0x%jx)\n", 1681 i, start, size); 1682 pager_output(line); 1683 } 1684 } else 1685 pager_output("No reserved memory regions\n"); 1686 pager_close(); 1687 1688 return (CMD_OK); 1689} 1690 1691static int 1692fdt_cmd_nyi(int argc, char *argv[]) 1693{ 1694 1695 printf("command not yet implemented\n"); 1696 return (CMD_ERROR); 1697} 1698