fdt_loader_cmd.c revision 248934
1116742Ssam/*- 2116904Ssam * Copyright (c) 2009-2010 The FreeBSD Foundation 3186904Ssam * All rights reserved. 4116742Ssam * 5116742Ssam * This software was developed by Semihalf under sponsorship from 6116742Ssam * the FreeBSD Foundation. 7116742Ssam * 8116742Ssam * Redistribution and use in source and binary forms, with or without 9116742Ssam * modification, are permitted provided that the following conditions 10116742Ssam * are met: 11116742Ssam * 1. Redistributions of source code must retain the above copyright 12116742Ssam * notice, this list of conditions and the following disclaimer. 13116742Ssam * 2. Redistributions in binary form must reproduce the above copyright 14116742Ssam * notice, this list of conditions and the following disclaimer in the 15116904Ssam * documentation and/or other materials provided with the distribution. 16116904Ssam * 17116904Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18116904Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19116904Ssam * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20116904Ssam * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21116904Ssam * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22116904Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23116904Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24116904Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25116904Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26116742Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27116742Ssam * SUCH DAMAGE. 28116742Ssam */ 29116742Ssam 30116742Ssam#include <sys/cdefs.h> 31116742Ssam__FBSDID("$FreeBSD: head/sys/boot/fdt/fdt_loader_cmd.c 248934 2013-03-30 16:33:16Z kientzle $"); 32116742Ssam 33116742Ssam#include <stand.h> 34116742Ssam#include <fdt.h> 35116742Ssam#include <libfdt.h> 36116742Ssam#include <sys/param.h> 37116742Ssam#include <sys/linker.h> 38116742Ssam#include <machine/elf.h> 39191756Ssam 40191756Ssam#include "bootstrap.h" 41116742Ssam#include "glue.h" 42116742Ssam 43170530Ssam#ifdef DEBUG 44170530Ssam#define debugf(fmt, args...) do { printf("%s(): ", __func__); \ 45170530Ssam printf(fmt,##args); } while (0) 46170530Ssam#else 47170530Ssam#define debugf(fmt, args...) 48138568Ssam#endif 49116742Ssam 50127903Ssam#define FDT_CWD_LEN 256 51127903Ssam#define FDT_MAX_DEPTH 6 52178952Ssam 53178952Ssam#define FDT_PROP_SEP " = " 54178952Ssam 55178952Ssam#define STR(number) #number 56178952Ssam#define STRINGIFY(number) STR(number) 57127903Ssam 58116742Ssam#define COPYOUT(s,d,l) archsw.arch_copyout(s, d, l) 59116742Ssam#define COPYIN(s,d,l) archsw.arch_copyin(s, d, l) 60116742Ssam 61116742Ssam#define FDT_STATIC_DTB_SYMBOL "fdt_static_dtb" 62170530Ssam 63170530Ssam#define CMD_REQUIRES_BLOB 0x01 64170530Ssam 65170530Ssam/* Location of FDT yet to be loaded. */ 66170530Ssam/* This may be in read-only memory, so can't be manipulated directly. */ 67170530Ssamstatic struct fdt_header *fdt_to_load = NULL; 68116742Ssam/* Location of FDT on heap. */ 69116742Ssam/* This is the copy we actually manipulate. */ 70138568Ssamstatic struct fdt_header *fdtp = NULL; 71116742Ssam/* Size of FDT blob */ 72127903Ssamstatic size_t fdtp_size = 0; 73170530Ssam/* Location of FDT in kernel or module. */ 74170530Ssam/* This won't be set if FDT is loaded from disk or memory. */ 75170530Ssam/* If it is set, we'll update it when fdt_copy() gets called. */ 76170530Ssamstatic vm_offset_t fdtp_va = 0; 77170530Ssam 78170530Ssamstatic int fdt_load_dtb(vm_offset_t va); 79170530Ssam 80127903Ssamstatic int fdt_cmd_nyi(int argc, char *argv[]); 81127903Ssam 82138568Ssamstatic int fdt_cmd_addr(int argc, char *argv[]); 83127903Ssamstatic int fdt_cmd_mkprop(int argc, char *argv[]); 84127903Ssamstatic int fdt_cmd_cd(int argc, char *argv[]); 85170530Ssamstatic int fdt_cmd_hdr(int argc, char *argv[]); 86127903Ssamstatic int fdt_cmd_ls(int argc, char *argv[]); 87127903Ssamstatic int fdt_cmd_prop(int argc, char *argv[]); 88116742Ssamstatic int fdt_cmd_pwd(int argc, char *argv[]); 89170530Ssamstatic int fdt_cmd_rm(int argc, char *argv[]); 90170530Ssamstatic int fdt_cmd_mknode(int argc, char *argv[]); 91170530Ssamstatic int fdt_cmd_mres(int argc, char *argv[]); 92170530Ssam 93170530Ssamtypedef int cmdf_t(int, char *[]); 94170530Ssam 95170530Ssamstruct cmdtab { 96138568Ssam char *name; 97116742Ssam cmdf_t *handler; 98127903Ssam int flags; 99127903Ssam}; 100170530Ssam 101170530Ssamstatic const struct cmdtab commands[] = { 102170530Ssam { "addr", &fdt_cmd_addr, 0 }, 103170530Ssam { "alias", &fdt_cmd_nyi, 0 }, 104170530Ssam { "cd", &fdt_cmd_cd, CMD_REQUIRES_BLOB }, 105170530Ssam { "header", &fdt_cmd_hdr, CMD_REQUIRES_BLOB }, 106170530Ssam { "ls", &fdt_cmd_ls, CMD_REQUIRES_BLOB }, 107170530Ssam { "mknode", &fdt_cmd_mknode, CMD_REQUIRES_BLOB }, 108138568Ssam { "mkprop", &fdt_cmd_mkprop, CMD_REQUIRES_BLOB }, 109127903Ssam { "mres", &fdt_cmd_mres, CMD_REQUIRES_BLOB }, 110116742Ssam { "prop", &fdt_cmd_prop, CMD_REQUIRES_BLOB }, 111116742Ssam { "pwd", &fdt_cmd_pwd, CMD_REQUIRES_BLOB }, 112116742Ssam { "rm", &fdt_cmd_rm, CMD_REQUIRES_BLOB }, 113116742Ssam { NULL, NULL } 114116742Ssam}; 115116742Ssam 116116742Ssamstatic char cwd[FDT_CWD_LEN] = "/"; 117116742Ssam 118116742Ssamstatic vm_offset_t 119116742Ssamfdt_find_static_dtb() 120116742Ssam{ 121116742Ssam Elf_Ehdr *ehdr; 122116742Ssam Elf_Shdr *shdr; 123116742Ssam Elf_Sym sym; 124116742Ssam vm_offset_t strtab, symtab, fdt_start; 125116742Ssam uint64_t offs; 126116742Ssam struct preloaded_file *kfp; 127116742Ssam struct file_metadata *md; 128116742Ssam char *strp; 129116742Ssam int i, sym_count; 130116742Ssam 131116742Ssam sym_count = symtab = strtab = 0; 132116742Ssam strp = NULL; 133170530Ssam 134218927Sbschmidt offs = __elfN(relocation_offset); 135116742Ssam 136170530Ssam kfp = file_findfile(NULL, NULL); 137192328Ssam if (kfp == NULL) 138116742Ssam return (0); 139116742Ssam 140116742Ssam /* Locate the dynamic symbols and strtab. */ 141116742Ssam md = file_findmetadata(kfp, MODINFOMD_ELFHDR); 142116742Ssam if (md == NULL) 143116742Ssam return (0); 144116742Ssam ehdr = (Elf_Ehdr *)md->md_data; 145116742Ssam 146116742Ssam md = file_findmetadata(kfp, MODINFOMD_SHDR); 147116742Ssam if (md == NULL) 148116742Ssam return (0); 149116742Ssam shdr = (Elf_Shdr *)md->md_data; 150116742Ssam 151116742Ssam for (i = 0; i < ehdr->e_shnum; ++i) { 152116742Ssam if (shdr[i].sh_type == SHT_DYNSYM && symtab == 0) { 153127903Ssam symtab = shdr[i].sh_addr + offs; 154138568Ssam sym_count = shdr[i].sh_size / sizeof(Elf_Sym); 155116742Ssam } else if (shdr[i].sh_type == SHT_STRTAB && strtab == 0) { 156116742Ssam strtab = shdr[i].sh_addr + offs; 157116742Ssam } 158116742Ssam } 159116742Ssam 160116742Ssam /* 161116742Ssam * The most efficent way to find a symbol would be to calculate a 162193840Ssam * hash, find proper bucket and chain, and thus find a symbol. 163193840Ssam * However, that would involve code duplication (e.g. for hash 164193840Ssam * function). So we're using simpler and a bit slower way: we're 165116742Ssam * iterating through symbols, searching for the one which name is 166116742Ssam * 'equal' to 'fdt_static_dtb'. To speed up the process a little bit, 167116742Ssam * we are eliminating symbols type of which is not STT_NOTYPE, or(and) 168116742Ssam * those which binding attribute is not STB_GLOBAL. 169262007Skevlo */ 170116742Ssam fdt_start = 0; 171116742Ssam while (sym_count > 0 && fdt_start == 0) { 172116742Ssam COPYOUT(symtab, &sym, sizeof(sym)); 173116742Ssam symtab += sizeof(sym); 174116742Ssam --sym_count; 175116742Ssam if (ELF_ST_BIND(sym.st_info) != STB_GLOBAL || 176170530Ssam ELF_ST_TYPE(sym.st_info) != STT_NOTYPE) 177116742Ssam continue; 178170530Ssam strp = strdupout(strtab + sym.st_name); 179170530Ssam if (strcmp(strp, FDT_STATIC_DTB_SYMBOL) == 0) 180170530Ssam fdt_start = (vm_offset_t)sym.st_value + offs; 181170530Ssam free(strp); 182170530Ssam } 183170530Ssam return (fdt_start); 184173273Ssam} 185173273Ssam 186173273Ssamstatic int 187173273Ssamfdt_load_dtb(vm_offset_t va) 188116742Ssam{ 189195618Srpaulo struct fdt_header header; 190116742Ssam int err; 191127903Ssam 192127903Ssam COPYOUT(va, &header, sizeof(header)); 193170530Ssam err = fdt_check_header(&header); 194170530Ssam if (err < 0) { 195138568Ssam if (err == -FDT_ERR_BADVERSION) 196138568Ssam sprintf(command_errbuf, 197170530Ssam "incompatible blob version: %d, should be: %d", 198170530Ssam fdt_version(fdtp), FDT_LAST_SUPPORTED_VERSION); 199183243Ssam 200183243Ssam else 201138568Ssam sprintf(command_errbuf, "error validating blob: %s", 202232480Sadrian fdt_strerror(err)); 203246807Smonthadar return (1); 204232480Sadrian } 205246807Smonthadar 206232480Sadrian /* 207246807Smonthadar * Release previous blob 208232480Sadrian */ 209127903Ssam if (fdtp) 210138568Ssam free(fdtp); 211138568Ssam 212138568Ssam fdtp_size = fdt_totalsize(&header); 213138568Ssam fdtp = malloc(fdtp_size); 214138568Ssam 215138568Ssam if (fdtp == NULL) { 216116742Ssam command_errmsg = "can't allocate memory for device tree copy"; 217138568Ssam return (1); 218138568Ssam } 219138568Ssam 220170530Ssam fdtp_va = va; 221170530Ssam COPYOUT(va, fdtp, fdtp_size); 222170530Ssam debugf("DTB blob found at 0x%jx, size: 0x%jx\n", (uintmax_t)va, (uintmax_t)fdtp_size); 223170530Ssam 224170530Ssam return (0); 225170530Ssam} 226170530Ssam 227138568Ssamstatic int 228138568Ssamfdt_load_dtb_addr(struct fdt_header *header) 229138568Ssam{ 230138568Ssam 231138568Ssam // TODO: Verify that there really is an FDT at 232138568Ssam // the specified location. 233170530Ssam fdtp_size = fdt_totalsize(header); 234170530Ssam free(fdtp); 235170530Ssam if ((fdtp = malloc(fdtp_size)) == NULL) { 236170530Ssam command_errmsg = "can't allocate memory for device tree copy"; 237170530Ssam return (1); 238170530Ssam } 239170530Ssam 240170530Ssam fdtp_va = 0; // Don't write this back into module or kernel. 241170530Ssam bcopy(header, fdtp, fdtp_size); 242170530Ssam return (0); 243170530Ssam} 244170530Ssam 245170530Ssamstatic int 246170530Ssamfdt_setup_fdtp() 247170530Ssam{ 248170530Ssam struct preloaded_file *bfp; 249170530Ssam struct fdt_header *hdr; 250170530Ssam const char *s; 251170530Ssam char *p; 252170530Ssam vm_offset_t va; 253170530Ssam 254170530Ssam if ((bfp = file_findfile(NULL, "dtb")) != NULL) { 255138568Ssam printf("Using DTB from loaded file.\n"); 256138568Ssam return fdt_load_dtb(bfp->f_addr); 257138568Ssam } 258138568Ssam 259138568Ssam if (fdt_to_load != NULL) { 260138568Ssam printf("Using DTB from memory address 0x%08X.\n", 261170530Ssam (unsigned int)fdt_to_load); 262170530Ssam return fdt_load_dtb_addr(fdt_to_load); 263170530Ssam } 264138568Ssam 265138568Ssam s = ub_env_get("fdtaddr"); 266138568Ssam if (s != NULL && *s != '\0') { 267170530Ssam hdr = (struct fdt_header *)strtoul(s, &p, 16); 268138568Ssam if (*p == '\0') { 269138568Ssam printf("Using DTB provided by U-Boot.\n"); 270138568Ssam return fdt_load_dtb_addr(hdr); 271138568Ssam } 272138568Ssam } 273138568Ssam 274138568Ssam if ((va = fdt_find_static_dtb()) != 0) { 275138568Ssam printf("Using DTB compiled into kernel.\n"); 276138568Ssam return (fdt_load_dtb(va)); 277138568Ssam } 278138568Ssam 279138568Ssam command_errmsg = "no device tree blob found!"; 280138568Ssam return (1); 281138568Ssam} 282138568Ssam 283138568Ssam#define fdt_strtovect(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \ 284138568Ssam (cellbuf), (lim), (cellsize), 0); 285138568Ssam 286138568Ssam/* Force using base 16 */ 287173863Ssam#define fdt_strtovectx(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \ 288138568Ssam (cellbuf), (lim), (cellsize), 16); 289138568Ssam 290138568Ssamstatic int 291138568Ssam_fdt_strtovect(char *str, void *cellbuf, int lim, unsigned char cellsize, 292138568Ssam uint8_t base) 293138568Ssam{ 294138568Ssam char *buf = str; 295138568Ssam char *end = str + strlen(str) - 2; 296170530Ssam uint32_t *u32buf = NULL; 297170530Ssam uint8_t *u8buf = NULL; 298170530Ssam int cnt = 0; 299170530Ssam 300172055Ssam if (cellsize == sizeof(uint32_t)) 301170530Ssam u32buf = (uint32_t *)cellbuf; 302170530Ssam else 303138568Ssam u8buf = (uint8_t *)cellbuf; 304170530Ssam 305138568Ssam if (lim == 0) 306138568Ssam return (0); 307138568Ssam 308138568Ssam while (buf < end) { 309138568Ssam 310138568Ssam /* Skip white whitespace(s)/separators */ 311138568Ssam while (!isxdigit(*buf) && buf < end) 312170530Ssam buf++; 313170530Ssam 314170530Ssam if (u32buf != NULL) 315170530Ssam u32buf[cnt] = 316138568Ssam cpu_to_fdt32((uint32_t)strtol(buf, NULL, base)); 317138568Ssam 318138568Ssam else 319138568Ssam u8buf[cnt] = (uint8_t)strtol(buf, NULL, base); 320138568Ssam 321170530Ssam if (cnt + 1 <= lim - 1) 322170530Ssam cnt++; 323170530Ssam else 324170530Ssam break; 325170530Ssam buf++; 326170530Ssam /* Find another number */ 327170530Ssam while ((isxdigit(*buf) || *buf == 'x') && buf < end) 328170530Ssam buf++; 329170530Ssam } 330193542Ssam return (cnt); 331193542Ssam} 332193542Ssam 333170530Ssam#define TMP_MAX_ETH 8 334172055Ssam 335232479Sadrianstatic void 336234874Smonthadarfixup_ethernet(const char *env, char *ethstr, int *eth_no, int len) 337234874Smonthadar{ 338193542Ssam char *end, *str; 339170530Ssam uint8_t tmp_addr[6]; 340170530Ssam int i, n; 341170530Ssam 342170530Ssam /* Extract interface number */ 343170530Ssam i = strtol(env + 3, &end, 10); 344170530Ssam if (end == (env + 3)) 345170530Ssam /* 'ethaddr' means interface 0 address */ 346170530Ssam n = 0; 347170530Ssam else 348170530Ssam n = i; 349170530Ssam 350170530Ssam if (n > TMP_MAX_ETH) 351170530Ssam return; 352172055Ssam 353170530Ssam str = ub_env_get(env); 354170530Ssam 355173618Ssam /* Convert macaddr string into a vector of uints */ 356170530Ssam fdt_strtovectx(str, &tmp_addr, 6, sizeof(uint8_t)); 357170530Ssam if (n != 0) { 358173618Ssam i = strlen(env) - 7; 359173618Ssam strncpy(ethstr + 8, env + 3, i); 360173618Ssam } 361173618Ssam /* Set actual property to a value from vect */ 362173618Ssam fdt_setprop(fdtp, fdt_path_offset(fdtp, ethstr), 363173618Ssam "local-mac-address", &tmp_addr, 6 * sizeof(uint8_t)); 364173618Ssam 365170530Ssam /* Clear ethernet..XXXX.. string */ 366170530Ssam bzero(ethstr + 8, len - 8); 367170530Ssam 368170530Ssam if (n + 1 > *eth_no) 369170530Ssam *eth_no = n + 1; 370170530Ssam} 371170530Ssam 372170530Ssamstatic void 373170530Ssamfixup_cpubusfreqs(unsigned long cpufreq, unsigned long busfreq) 374170530Ssam{ 375170530Ssam int lo, o = 0, o2, maxo = 0, depth; 376170530Ssam const uint32_t zero = 0; 377170530Ssam 378170530Ssam /* We want to modify every subnode of /cpus */ 379170530Ssam o = fdt_path_offset(fdtp, "/cpus"); 380170530Ssam if (o < 0) 381170530Ssam return; 382170530Ssam 383170530Ssam /* maxo should contain offset of node next to /cpus */ 384170530Ssam depth = 0; 385170530Ssam maxo = o; 386170530Ssam while (depth != -1) 387170530Ssam maxo = fdt_next_node(fdtp, maxo, &depth); 388170530Ssam 389170530Ssam /* Find CPU frequency properties */ 390170530Ssam o = fdt_node_offset_by_prop_value(fdtp, o, "clock-frequency", 391170530Ssam &zero, sizeof(uint32_t)); 392170530Ssam 393170530Ssam o2 = fdt_node_offset_by_prop_value(fdtp, o, "bus-frequency", &zero, 394170530Ssam sizeof(uint32_t)); 395170530Ssam 396170530Ssam lo = MIN(o, o2); 397170530Ssam 398170530Ssam while (o != -FDT_ERR_NOTFOUND && o2 != -FDT_ERR_NOTFOUND) { 399170530Ssam 400170530Ssam o = fdt_node_offset_by_prop_value(fdtp, lo, 401170530Ssam "clock-frequency", &zero, sizeof(uint32_t)); 402170530Ssam 403170530Ssam o2 = fdt_node_offset_by_prop_value(fdtp, lo, "bus-frequency", 404170530Ssam &zero, sizeof(uint32_t)); 405170530Ssam 406170530Ssam /* We're only interested in /cpus subnode(s) */ 407170530Ssam if (lo > maxo) 408170530Ssam break; 409170530Ssam 410170530Ssam fdt_setprop_inplace_cell(fdtp, lo, "clock-frequency", 411170530Ssam (uint32_t)cpufreq); 412170530Ssam 413170530Ssam fdt_setprop_inplace_cell(fdtp, lo, "bus-frequency", 414170530Ssam (uint32_t)busfreq); 415170530Ssam 416170530Ssam lo = MIN(o, o2); 417170530Ssam } 418170530Ssam} 419170530Ssam 420170530Ssamstatic int 421182820Ssamfdt_reg_valid(uint32_t *reg, int len, int addr_cells, int size_cells) 422182820Ssam{ 423182820Ssam int cells_in_tuple, i, tuples, tuple_size; 424170530Ssam uint32_t cur_start, cur_size; 425182820Ssam 426182820Ssam cells_in_tuple = (addr_cells + size_cells); 427182820Ssam tuple_size = cells_in_tuple * sizeof(uint32_t); 428182820Ssam tuples = len / tuple_size; 429170530Ssam if (tuples == 0) 430170530Ssam return (EINVAL); 431170530Ssam 432170530Ssam for (i = 0; i < tuples; i++) { 433170530Ssam if (addr_cells == 2) 434138568Ssam cur_start = fdt64_to_cpu(reg[i * cells_in_tuple]); 435120098Ssam else 436120098Ssam cur_start = fdt32_to_cpu(reg[i * cells_in_tuple]); 437120098Ssam 438170530Ssam if (size_cells == 2) 439170530Ssam cur_size = fdt64_to_cpu(reg[i * cells_in_tuple + 2]); 440170530Ssam else 441170530Ssam cur_size = fdt32_to_cpu(reg[i * cells_in_tuple + 1]); 442120098Ssam 443138568Ssam if (cur_size == 0) 444120098Ssam return (EINVAL); 445120098Ssam 446170530Ssam debugf(" reg#%d (start: 0x%0x size: 0x%0x) valid!\n", 447170530Ssam i, cur_start, cur_size); 448170530Ssam } 449170530Ssam return (0); 450120098Ssam} 451138568Ssam 452120098Ssamstatic void 453120098Ssamfixup_memory(struct sys_info *si) 454170530Ssam{ 455170530Ssam struct mem_region *curmr; 456170530Ssam uint32_t addr_cells, size_cells; 457120098Ssam uint32_t *addr_cellsp, *reg, *size_cellsp; 458138568Ssam int err, i, len, memory, realmrno, root; 459120098Ssam uint8_t *buf, *sb; 460120098Ssam uint64_t rstart, rsize; 461170530Ssam int reserved; 462170530Ssam 463170530Ssam root = fdt_path_offset(fdtp, "/"); 464120098Ssam if (root < 0) { 465138568Ssam sprintf(command_errbuf, "Could not find root node !"); 466120098Ssam return; 467120098Ssam } 468170530Ssam 469170530Ssam memory = fdt_path_offset(fdtp, "/memory"); 470170530Ssam if (memory <= 0) { 471170530Ssam /* Create proper '/memory' node. */ 472120098Ssam memory = fdt_add_subnode(fdtp, root, "memory"); 473138568Ssam if (memory <= 0) { 474120098Ssam sprintf(command_errbuf, "Could not fixup '/memory' " 475120098Ssam "node, error code : %d!\n", memory); 476170530Ssam return; 477170530Ssam } 478170530Ssam 479170530Ssam err = fdt_setprop(fdtp, memory, "device_type", "memory", 480120098Ssam sizeof("memory")); 481138568Ssam 482120098Ssam if (err < 0) 483170530Ssam return; 484170530Ssam } 485170530Ssam 486170530Ssam addr_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#address-cells", 487170530Ssam NULL); 488170530Ssam size_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#size-cells", NULL); 489170530Ssam 490170530Ssam if (addr_cellsp == NULL || size_cellsp == NULL) { 491170530Ssam sprintf(command_errbuf, "Could not fixup '/memory' node : " 492170530Ssam "%s %s property not found in root node!\n", 493120098Ssam (!addr_cellsp) ? "#address-cells" : "", 494116742Ssam (!size_cellsp) ? "#size-cells" : ""); 495116742Ssam return; 496116742Ssam } 497116742Ssam 498116742Ssam addr_cells = fdt32_to_cpu(*addr_cellsp); 499116742Ssam size_cells = fdt32_to_cpu(*size_cellsp); 500116742Ssam 501116742Ssam /* 502116742Ssam * Convert memreserve data to memreserve property 503116742Ssam * Check if property already exists 504116742Ssam */ 505116742Ssam reserved = fdt_num_mem_rsv(fdtp); 506116742Ssam if (reserved && 507116742Ssam (fdt_getprop(fdtp, root, "memreserve", NULL) == NULL)) { 508116742Ssam len = (addr_cells + size_cells) * reserved * sizeof(uint32_t); 509116742Ssam sb = buf = (uint8_t *)malloc(len); 510116742Ssam if (!buf) 511116742Ssam return; 512116742Ssam 513116742Ssam bzero(buf, len); 514116742Ssam 515116742Ssam for (i = 0; i < reserved; i++) { 516116742Ssam curmr = &si->mr[i]; 517116742Ssam if (fdt_get_mem_rsv(fdtp, i, &rstart, &rsize)) 518172055Ssam break; 519172055Ssam if (rsize) { 520116742Ssam /* Ensure endianess, and put cells into a buffer */ 521127903Ssam if (addr_cells == 2) 522127903Ssam *(uint64_t *)buf = 523116742Ssam cpu_to_fdt64(rstart); 524116742Ssam else 525116742Ssam *(uint32_t *)buf = 526187797Ssam cpu_to_fdt32(rstart); 527187797Ssam 528187797Ssam buf += sizeof(uint32_t) * addr_cells; 529187797Ssam if (size_cells == 2) 530187797Ssam *(uint64_t *)buf = 531116742Ssam cpu_to_fdt64(rsize); 532127903Ssam else 533127903Ssam *(uint32_t *)buf = 534127903Ssam cpu_to_fdt32(rsize); 535170530Ssam 536170530Ssam buf += sizeof(uint32_t) * size_cells; 537170530Ssam } 538170530Ssam } 539170530Ssam 540170530Ssam /* Set property */ 541170530Ssam if ((err = fdt_setprop(fdtp, root, "memreserve", sb, len)) < 0) 542170530Ssam printf("Could not fixup 'memreserve' property.\n"); 543170530Ssam 544170530Ssam free(sb); 545170530Ssam } 546170530Ssam 547170530Ssam /* Count valid memory regions entries in sysinfo. */ 548138568Ssam realmrno = si->mr_no; 549127903Ssam for (i = 0; i < si->mr_no; i++) 550127903Ssam if (si->mr[i].start == 0 && si->mr[i].size == 0) 551170530Ssam realmrno--; 552170530Ssam 553170530Ssam if (realmrno == 0) { 554170530Ssam sprintf(command_errbuf, "Could not fixup '/memory' node : " 555170530Ssam "sysinfo doesn't contain valid memory regions info!\n"); 556170530Ssam return; 557170530Ssam } 558170530Ssam 559170530Ssam if ((reg = (uint32_t *)fdt_getprop(fdtp, memory, "reg", 560170530Ssam &len)) != NULL) { 561170530Ssam 562170530Ssam if (fdt_reg_valid(reg, len, addr_cells, size_cells) == 0) 563170530Ssam /* 564170530Ssam * Do not apply fixup if existing 'reg' property 565170530Ssam * seems to be valid. 566170530Ssam */ 567170530Ssam return; 568170530Ssam } 569183243Ssam 570170530Ssam len = (addr_cells + size_cells) * realmrno * sizeof(uint32_t); 571170530Ssam sb = buf = (uint8_t *)malloc(len); 572183243Ssam if (!buf) 573170530Ssam return; 574170530Ssam 575170530Ssam bzero(buf, len); 576170530Ssam 577170530Ssam for (i = 0; i < si->mr_no; i++) { 578170530Ssam curmr = &si->mr[i]; 579170530Ssam if (curmr->size != 0) { 580170530Ssam /* Ensure endianess, and put cells into a buffer */ 581170530Ssam if (addr_cells == 2) 582170530Ssam *(uint64_t *)buf = 583170530Ssam cpu_to_fdt64(curmr->start); 584170530Ssam else 585170530Ssam *(uint32_t *)buf = 586170530Ssam cpu_to_fdt32(curmr->start); 587170530Ssam 588170530Ssam buf += sizeof(uint32_t) * addr_cells; 589170530Ssam if (size_cells == 2) 590170530Ssam *(uint64_t *)buf = 591187797Ssam cpu_to_fdt64(curmr->size); 592187797Ssam else 593187797Ssam *(uint32_t *)buf = 594187797Ssam cpu_to_fdt32(curmr->size); 595187797Ssam 596170530Ssam buf += sizeof(uint32_t) * size_cells; 597170530Ssam } 598170530Ssam } 599173273Ssam 600173273Ssam /* Set property */ 601173273Ssam if ((err = fdt_setprop(fdtp, memory, "reg", sb, len)) < 0) 602173273Ssam sprintf(command_errbuf, "Could not fixup '/memory' node.\n"); 603170530Ssam 604170530Ssam free(sb); 605173273Ssam} 606173273Ssam 607173273Ssamstatic void 608173273Ssamfixup_stdout(const char *env) 609173273Ssam{ 610173273Ssam const char *str; 611173273Ssam char *ptr; 612173273Ssam int serialno; 613170530Ssam int len, no, sero; 614170530Ssam const struct fdt_property *prop; 615170530Ssam char *tmp[10]; 616170530Ssam 617170530Ssam str = ub_env_get(env); 618170530Ssam ptr = (char *)str + strlen(str) - 1; 619170530Ssam while (ptr > str && isdigit(*(str - 1))) 620170530Ssam str--; 621170530Ssam 622170530Ssam if (ptr == str) 623170530Ssam return; 624170530Ssam 625170530Ssam serialno = (int)strtol(ptr, NULL, 0); 626170530Ssam no = fdt_path_offset(fdtp, "/chosen"); 627170530Ssam if (no < 0) 628170530Ssam return; 629170530Ssam 630170530Ssam prop = fdt_get_property(fdtp, no, "stdout", &len); 631170530Ssam 632170530Ssam /* If /chosen/stdout does not extist, create it */ 633170530Ssam if (prop == NULL || (prop != NULL && len == 0)) { 634170530Ssam 635170530Ssam bzero(tmp, 10 * sizeof(char)); 636170530Ssam strcpy((char *)&tmp, "serial"); 637170530Ssam if (strlen(ptr) > 3) 638170530Ssam /* Serial number too long */ 639172055Ssam return; 640172055Ssam 641170530Ssam strncpy((char *)tmp + 6, ptr, 3); 642172055Ssam sero = fdt_path_offset(fdtp, (const char *)tmp); 643170530Ssam if (sero < 0) 644170530Ssam /* 645170530Ssam * If serial device we're trying to assign 646170530Ssam * stdout to doesn't exist in DT -- return. 647170530Ssam */ 648170530Ssam return; 649170530Ssam 650170530Ssam fdt_setprop(fdtp, no, "stdout", &tmp, 651170530Ssam strlen((char *)&tmp) + 1); 652170530Ssam fdt_setprop(fdtp, no, "stdin", &tmp, 653170530Ssam strlen((char *)&tmp) + 1); 654170530Ssam } 655170530Ssam} 656170530Ssam 657170530Ssam/* 658170530Ssam * Locate the blob, fix it up and return its location. 659170530Ssam */ 660170530Ssamstatic int 661170530Ssamfdt_fixup(void) 662170530Ssam{ 663170530Ssam const char *env; 664170530Ssam char *ethstr; 665170530Ssam int chosen, err, eth_no, len; 666170530Ssam struct sys_info *si; 667170530Ssam 668172055Ssam env = NULL; 669172055Ssam eth_no = 0; 670172055Ssam ethstr = NULL; 671170530Ssam len = 0; 672170530Ssam 673170530Ssam if (fdtp == NULL) { 674170530Ssam err = fdt_setup_fdtp(); 675170530Ssam if (err) { 676170530Ssam sprintf(command_errbuf, "No valid device tree blob found!"); 677170530Ssam return (0); 678170530Ssam } 679170530Ssam } 680170530Ssam 681170530Ssam /* Create /chosen node (if not exists) */ 682170530Ssam if ((chosen = fdt_subnode_offset(fdtp, 0, "chosen")) == 683170530Ssam -FDT_ERR_NOTFOUND) 684170530Ssam chosen = fdt_add_subnode(fdtp, 0, "chosen"); 685170530Ssam 686170530Ssam /* Value assigned to fixup-applied does not matter. */ 687170530Ssam if (fdt_getprop(fdtp, chosen, "fixup-applied", NULL)) 688138568Ssam return (1); 689116742Ssam 690116742Ssam /* Acquire sys_info */ 691116742Ssam si = ub_get_sys_info(); 692138568Ssam 693138568Ssam while ((env = ub_env_enum(env)) != NULL) { 694138568Ssam if (strncmp(env, "eth", 3) == 0 && 695138568Ssam strncmp(env + (strlen(env) - 4), "addr", 4) == 0) { 696138568Ssam /* 697138568Ssam * Handle Ethernet addrs: parse uboot env eth%daddr 698138568Ssam */ 699138568Ssam 700138568Ssam if (!eth_no) { 701127903Ssam /* 702170530Ssam * Check how many chars we will need to store 703170530Ssam * maximal eth iface number. 704170530Ssam */ 705170530Ssam len = strlen(STRINGIFY(TMP_MAX_ETH)) + 706170530Ssam strlen("ethernet"); 707193439Ssam 708170530Ssam /* 709170530Ssam * Reserve mem for string "ethernet" and len 710170530Ssam * chars for iface no. 711170530Ssam */ 712138568Ssam ethstr = (char *)malloc(len * sizeof(char)); 713170530Ssam bzero(ethstr, len * sizeof(char)); 714253639Srpaulo strcpy(ethstr, "ethernet0"); 715138568Ssam } 716138568Ssam 717170530Ssam /* Modify blob */ 718138568Ssam fixup_ethernet(env, ethstr, ð_no, len); 719138568Ssam 720138568Ssam } else if (strcmp(env, "consoledev") == 0) 721195618Srpaulo fixup_stdout(env); 722195618Srpaulo } 723231187Sadrian 724231187Sadrian /* Modify cpu(s) and bus clock frequenties in /cpus node [Hz] */ 725231187Sadrian fixup_cpubusfreqs(si->clk_cpu, si->clk_bus); 726231187Sadrian 727195618Srpaulo /* Fixup memory regions */ 728231187Sadrian fixup_memory(si); 729231187Sadrian 730231187Sadrian fdt_setprop(fdtp, chosen, "fixup-applied", NULL, 0); 731231187Sadrian return (1); 732231187Sadrian} 733231187Sadrian 734231187Sadrian/* 735231187Sadrian * Copy DTB blob to specified location and return size 736231187Sadrian */ 737231187Sadrianint 738234892Smonthadarfdt_copy(vm_offset_t va) 739231187Sadrian{ 740231187Sadrian int err; 741231187Sadrian 742231187Sadrian if (fdtp == NULL) { 743231187Sadrian err = fdt_setup_fdtp(); 744231187Sadrian if (err) { 745231187Sadrian printf("No valid device tree blob found!"); 746231187Sadrian return (0); 747231187Sadrian } 748231187Sadrian } 749116742Ssam 750116742Ssam if (fdt_fixup() == 0) 751138568Ssam return (0); 752170530Ssam 753170530Ssam if (fdtp_va != 0) { 754170530Ssam /* Overwrite the FDT with the fixed version. */ 755170530Ssam /* XXX Is this really appropriate? */ 756170530Ssam COPYIN(fdtp, fdtp_va, fdtp_size); 757170530Ssam } 758138568Ssam COPYIN(fdtp, va, fdtp_size); 759127903Ssam return (fdtp_size); 760138568Ssam} 761170530Ssam 762170530Ssam 763170530Ssam 764138568Ssamint 765170530Ssamcommand_fdt_internal(int argc, char *argv[]) 766170530Ssam{ 767170530Ssam cmdf_t *cmdh; 768178354Ssam int flags; 769138568Ssam char *cmd; 770116742Ssam int i, err; 771178354Ssam 772178354Ssam if (argc < 2) { 773178354Ssam command_errmsg = "usage is 'fdt <command> [<args>]"; 774178354Ssam return (CMD_ERROR); 775170530Ssam } 776239142Sadrian 777172055Ssam /* 778227331Sadrian * Validate fdt <command>. 779227331Sadrian */ 780227331Sadrian cmd = strdup(argv[1]); 781227331Sadrian i = 0; 782227331Sadrian cmdh = NULL; 783227331Sadrian while (!(commands[i].name == NULL)) { 784227331Sadrian if (strcmp(cmd, commands[i].name) == 0) { 785227331Sadrian /* found it */ 786227331Sadrian cmdh = commands[i].handler; 787227331Sadrian flags = commands[i].flags; 788227331Sadrian break; 789227331Sadrian } 790172055Ssam i++; 791172055Ssam } 792172055Ssam if (cmdh == NULL) { 793172055Ssam command_errmsg = "unknown command"; 794172055Ssam return (CMD_ERROR); 795172055Ssam } 796172055Ssam 797172055Ssam if (flags & CMD_REQUIRES_BLOB) { 798193439Ssam /* 799193439Ssam * Check if uboot env vars were parsed already. If not, do it now. 800193439Ssam */ 801193439Ssam if (fdt_fixup() == 0) 802193439Ssam return (CMD_ERROR); 803193439Ssam } 804193439Ssam 805193439Ssam /* 806172055Ssam * Call command handler. 807138568Ssam */ 808138568Ssam err = (*cmdh)(argc, argv); 809138568Ssam 810116742Ssam return (err); 811138568Ssam} 812138568Ssam 813138568Ssamstatic int 814116742Ssamfdt_cmd_addr(int argc, char *argv[]) 815187797Ssam{ 816187797Ssam struct preloaded_file *fp; 817187797Ssam struct fdt_header *hdr; 818170530Ssam const char *addr; 819190455Ssam char *cp; 820127903Ssam 821190455Ssam fdt_to_load = NULL; 822190455Ssam 823190455Ssam if (argc > 2) 824190455Ssam addr = argv[2]; 825170530Ssam else { 826170530Ssam sprintf(command_errbuf, "no address specified"); 827170530Ssam return (CMD_ERROR); 828170530Ssam } 829127903Ssam 830127903Ssam hdr = (struct fdt_header *)strtoul(addr, &cp, 16); 831138568Ssam if (cp == addr) { 832127903Ssam sprintf(command_errbuf, "Invalid address: %s", addr); 833127903Ssam return (CMD_ERROR); 834127903Ssam } 835127903Ssam 836127903Ssam while ((fp = file_findfile(NULL, "dtb")) != NULL) { 837127903Ssam file_discard(fp); 838127903Ssam } 839127903Ssam 840127903Ssam fdt_to_load = hdr; 841127903Ssam return (CMD_OK); 842127903Ssam} 843181347Ssam 844181347Ssamstatic int 845138568Ssamfdt_cmd_cd(int argc, char *argv[]) 846138568Ssam{ 847138568Ssam char *path; 848138568Ssam char tmp[FDT_CWD_LEN]; 849138568Ssam int len, o; 850138568Ssam 851138568Ssam path = (argc > 2) ? argv[2] : "/"; 852138568Ssam 853138568Ssam if (path[0] == '/') { 854138568Ssam len = strlen(path); 855138568Ssam if (len >= FDT_CWD_LEN) 856138568Ssam goto fail; 857138568Ssam } else { 858138568Ssam /* Handle path specification relative to cwd */ 859138568Ssam len = strlen(cwd) + strlen(path) + 1; 860138568Ssam if (len >= FDT_CWD_LEN) 861138568Ssam goto fail; 862138568Ssam 863138568Ssam strcpy(tmp, cwd); 864138568Ssam strcat(tmp, "/"); 865138568Ssam strcat(tmp, path); 866138568Ssam path = tmp; 867138568Ssam } 868138568Ssam 869138568Ssam o = fdt_path_offset(fdtp, path); 870138568Ssam if (o < 0) { 871138568Ssam sprintf(command_errbuf, "could not find node: '%s'", path); 872138568Ssam return (CMD_ERROR); 873116742Ssam } 874116742Ssam 875116742Ssam strcpy(cwd, path); 876116742Ssam return (CMD_OK); 877116742Ssam 878116742Ssamfail: 879116742Ssam sprintf(command_errbuf, "path too long: %d, max allowed: %d", 880116742Ssam len, FDT_CWD_LEN - 1); 881172055Ssam return (CMD_ERROR); 882116742Ssam} 883116742Ssam 884172055Ssamstatic int 885172055Ssamfdt_cmd_hdr(int argc __unused, char *argv[] __unused) 886116742Ssam{ 887138568Ssam char line[80]; 888138568Ssam int ver; 889138568Ssam 890116742Ssam if (fdtp == NULL) { 891116742Ssam command_errmsg = "no device tree blob pointer?!"; 892116742Ssam return (CMD_ERROR); 893116742Ssam } 894116742Ssam 895116742Ssam ver = fdt_version(fdtp); 896116742Ssam pager_open(); 897116742Ssam sprintf(line, "\nFlattened device tree header (%p):\n", fdtp); 898116742Ssam pager_output(line); 899116742Ssam sprintf(line, " magic = 0x%08x\n", fdt_magic(fdtp)); 900116742Ssam pager_output(line); 901116742Ssam sprintf(line, " size = %d\n", fdt_totalsize(fdtp)); 902116742Ssam pager_output(line); 903116742Ssam sprintf(line, " off_dt_struct = 0x%08x\n", 904172055Ssam fdt_off_dt_struct(fdtp)); 905116742Ssam pager_output(line); 906172055Ssam sprintf(line, " off_dt_strings = 0x%08x\n", 907172055Ssam fdt_off_dt_strings(fdtp)); 908172055Ssam pager_output(line); 909172055Ssam sprintf(line, " off_mem_rsvmap = 0x%08x\n", 910116742Ssam fdt_off_mem_rsvmap(fdtp)); 911116742Ssam pager_output(line); 912116742Ssam sprintf(line, " version = %d\n", ver); 913116742Ssam pager_output(line); 914116742Ssam sprintf(line, " last compatible version = %d\n", 915116742Ssam fdt_last_comp_version(fdtp)); 916116742Ssam pager_output(line); 917116742Ssam if (ver >= 2) { 918116742Ssam sprintf(line, " boot_cpuid = %d\n", 919116742Ssam fdt_boot_cpuid_phys(fdtp)); 920116742Ssam pager_output(line); 921116742Ssam } 922116742Ssam if (ver >= 3) { 923172055Ssam sprintf(line, " size_dt_strings = %d\n", 924172055Ssam fdt_size_dt_strings(fdtp)); 925172055Ssam pager_output(line); 926172055Ssam } 927172055Ssam if (ver >= 17) { 928172055Ssam sprintf(line, " size_dt_struct = %d\n", 929172055Ssam fdt_size_dt_struct(fdtp)); 930172055Ssam pager_output(line); 931172055Ssam } 932172055Ssam pager_close(); 933172055Ssam 934172055Ssam return (CMD_OK); 935172055Ssam} 936172055Ssam 937182820Ssamstatic int 938182820Ssamfdt_cmd_ls(int argc, char *argv[]) 939182820Ssam{ 940182820Ssam const char *prevname[FDT_MAX_DEPTH] = { NULL }; 941182820Ssam const char *name; 942182820Ssam char *path; 943182820Ssam int i, o, depth, len; 944182820Ssam 945116742Ssam path = (argc > 2) ? argv[2] : NULL; 946231058Sadrian if (path == NULL) 947231058Sadrian path = cwd; 948231058Sadrian 949231058Sadrian o = fdt_path_offset(fdtp, path); 950231058Sadrian if (o < 0) { 951231058Sadrian sprintf(command_errbuf, "could not find node: '%s'", path); 952231058Sadrian return (CMD_ERROR); 953231058Sadrian } 954231058Sadrian 955231058Sadrian for (depth = 0; 956231058Sadrian (o >= 0) && (depth >= 0); 957231058Sadrian o = fdt_next_node(fdtp, o, &depth)) { 958231058Sadrian 959231058Sadrian name = fdt_get_name(fdtp, o, &len); 960231058Sadrian 961195618Srpaulo if (depth > FDT_MAX_DEPTH) { 962116742Ssam printf("max depth exceeded: %d\n", depth); 963116742Ssam continue; 964116742Ssam } 965116742Ssam 966116742Ssam prevname[depth] = name; 967116742Ssam 968116742Ssam /* Skip root (i = 1) when printing devices */ 969116742Ssam for (i = 1; i <= depth; i++) { 970116742Ssam if (prevname[i] == NULL) 971116742Ssam break; 972116742Ssam 973172055Ssam if (strcmp(cwd, "/") == 0) 974172055Ssam printf("/"); 975172055Ssam printf("%s", prevname[i]); 976172055Ssam } 977172055Ssam printf("\n"); 978172055Ssam } 979172055Ssam 980172055Ssam return (CMD_OK); 981193542Ssam} 982172055Ssam 983172055Ssamstatic __inline int 984172055Ssamisprint(int c) 985172055Ssam{ 986172055Ssam 987172055Ssam return (c >= ' ' && c <= 0x7e); 988172055Ssam} 989116742Ssam 990116742Ssamstatic int 991138568Ssamfdt_isprint(const void *data, int len, int *count) 992138568Ssam{ 993138568Ssam const char *d; 994138568Ssam char ch; 995178354Ssam int yesno, i; 996178354Ssam 997178354Ssam if (len == 0) 998138568Ssam return (0); 999116742Ssam 1000138568Ssam d = (const char *)data; 1001138568Ssam if (d[len - 1] != '\0') 1002138568Ssam return (0); 1003138568Ssam 1004138568Ssam *count = 0; 1005138568Ssam yesno = 1; 1006138568Ssam for (i = 0; i < len; i++) { 1007138568Ssam ch = *(d + i); 1008138568Ssam if (isprint(ch) || (ch == '\0' && i > 0)) { 1009138568Ssam /* Count strings */ 1010116742Ssam if (ch == '\0') 1011138568Ssam (*count)++; 1012138568Ssam continue; 1013124457Ssam } 1014124457Ssam 1015124457Ssam yesno = 0; 1016124457Ssam break; 1017124457Ssam } 1018124457Ssam 1019124457Ssam return (yesno); 1020138568Ssam} 1021138568Ssam 1022124457Ssamstatic int 1023138568Ssamfdt_data_str(const void *data, int len, int count, char **buf) 1024116742Ssam{ 1025138568Ssam char *b, *tmp; 1026138568Ssam const char *d; 1027120098Ssam int buf_len, i, l; 1028120098Ssam 1029116742Ssam /* 1030138568Ssam * Calculate the length for the string and allocate memory. 1031138568Ssam * 1032138568Ssam * Note that 'len' already includes at least one terminator. 1033178354Ssam */ 1034178354Ssam buf_len = len; 1035178354Ssam if (count > 1) { 1036178354Ssam /* 1037138568Ssam * Each token had already a terminator buried in 'len', but we 1038138568Ssam * only need one eventually, don't count space for these. 1039138568Ssam */ 1040138568Ssam buf_len -= count - 1; 1041138568Ssam 1042116742Ssam /* Each consecutive token requires a ", " separator. */ 1043116742Ssam buf_len += count * 2; 1044148291Ssam } 1045148291Ssam 1046148291Ssam /* Add some space for surrounding double quotes. */ 1047116742Ssam buf_len += count * 2; 1048138568Ssam 1049148291Ssam /* Note that string being put in 'tmp' may be as big as 'buf_len'. */ 1050116742Ssam b = (char *)malloc(buf_len); 1051148291Ssam tmp = (char *)malloc(buf_len); 1052148291Ssam if (b == NULL) 1053148291Ssam goto error; 1054148291Ssam 1055148291Ssam if (tmp == NULL) { 1056148291Ssam free(b); 1057148291Ssam goto error; 1058160685Ssam } 1059160685Ssam 1060160685Ssam b[0] = '\0'; 1061160685Ssam 1062160685Ssam /* 1063160685Ssam * Now that we have space, format the string. 1064160685Ssam */ 1065160685Ssam i = 0; 1066160685Ssam do { 1067160685Ssam d = (const char *)data + i; 1068160685Ssam l = strlen(d) + 1; 1069160685Ssam 1070160685Ssam sprintf(tmp, "\"%s\"%s", d, 1071160685Ssam (i + l) < len ? ", " : ""); 1072160685Ssam strcat(b, tmp); 1073160685Ssam 1074160685Ssam i += l; 1075160685Ssam 1076160685Ssam } while (i < len); 1077160685Ssam *buf = b; 1078160685Ssam 1079160685Ssam free(tmp); 1080160685Ssam 1081160685Ssam return (0); 1082170530Ssamerror: 1083170530Ssam return (1); 1084170530Ssam} 1085170530Ssam 1086170530Ssamstatic int 1087170530Ssamfdt_data_cell(const void *data, int len, char **buf) 1088170530Ssam{ 1089170530Ssam char *b, *tmp; 1090170530Ssam const uint32_t *c; 1091170530Ssam int count, i, l; 1092170530Ssam 1093170530Ssam /* Number of cells */ 1094170530Ssam count = len / 4; 1095170530Ssam 1096170530Ssam /* 1097170530Ssam * Calculate the length for the string and allocate memory. 1098170530Ssam */ 1099170530Ssam 1100170530Ssam /* Each byte translates to 2 output characters */ 1101170530Ssam l = len * 2; 1102170530Ssam if (count > 1) { 1103170530Ssam /* Each consecutive cell requires a " " separator. */ 1104170530Ssam l += (count - 1) * 1; 1105170530Ssam } 1106170530Ssam /* Each cell will have a "0x" prefix */ 1107170530Ssam l += count * 2; 1108170530Ssam /* Space for surrounding <> and terminator */ 1109170530Ssam l += 3; 1110170530Ssam 1111170530Ssam b = (char *)malloc(l); 1112170530Ssam tmp = (char *)malloc(l); 1113170530Ssam if (b == NULL) 1114170530Ssam goto error; 1115170530Ssam 1116170530Ssam if (tmp == NULL) { 1117170530Ssam free(b); 1118116742Ssam goto error; 1119 } 1120 1121 b[0] = '\0'; 1122 strcat(b, "<"); 1123 1124 for (i = 0; i < len; i += 4) { 1125 c = (const uint32_t *)((const uint8_t *)data + i); 1126 sprintf(tmp, "0x%08x%s", fdt32_to_cpu(*c), 1127 i < (len - 4) ? " " : ""); 1128 strcat(b, tmp); 1129 } 1130 strcat(b, ">"); 1131 *buf = b; 1132 1133 free(tmp); 1134 1135 return (0); 1136error: 1137 return (1); 1138} 1139 1140static int 1141fdt_data_bytes(const void *data, int len, char **buf) 1142{ 1143 char *b, *tmp; 1144 const char *d; 1145 int i, l; 1146 1147 /* 1148 * Calculate the length for the string and allocate memory. 1149 */ 1150 1151 /* Each byte translates to 2 output characters */ 1152 l = len * 2; 1153 if (len > 1) 1154 /* Each consecutive byte requires a " " separator. */ 1155 l += (len - 1) * 1; 1156 /* Each byte will have a "0x" prefix */ 1157 l += len * 2; 1158 /* Space for surrounding [] and terminator. */ 1159 l += 3; 1160 1161 b = (char *)malloc(l); 1162 tmp = (char *)malloc(l); 1163 if (b == NULL) 1164 goto error; 1165 1166 if (tmp == NULL) { 1167 free(b); 1168 goto error; 1169 } 1170 1171 b[0] = '\0'; 1172 strcat(b, "["); 1173 1174 for (i = 0, d = data; i < len; i++) { 1175 sprintf(tmp, "0x%02x%s", d[i], i < len - 1 ? " " : ""); 1176 strcat(b, tmp); 1177 } 1178 strcat(b, "]"); 1179 *buf = b; 1180 1181 free(tmp); 1182 1183 return (0); 1184error: 1185 return (1); 1186} 1187 1188static int 1189fdt_data_fmt(const void *data, int len, char **buf) 1190{ 1191 int count; 1192 1193 if (len == 0) { 1194 *buf = NULL; 1195 return (1); 1196 } 1197 1198 if (fdt_isprint(data, len, &count)) 1199 return (fdt_data_str(data, len, count, buf)); 1200 1201 else if ((len % 4) == 0) 1202 return (fdt_data_cell(data, len, buf)); 1203 1204 else 1205 return (fdt_data_bytes(data, len, buf)); 1206} 1207 1208static int 1209fdt_prop(int offset) 1210{ 1211 char *line, *buf; 1212 const struct fdt_property *prop; 1213 const char *name; 1214 const void *data; 1215 int len, rv; 1216 1217 line = NULL; 1218 prop = fdt_offset_ptr(fdtp, offset, sizeof(*prop)); 1219 if (prop == NULL) 1220 return (1); 1221 1222 name = fdt_string(fdtp, fdt32_to_cpu(prop->nameoff)); 1223 len = fdt32_to_cpu(prop->len); 1224 1225 rv = 0; 1226 buf = NULL; 1227 if (len == 0) { 1228 /* Property without value */ 1229 line = (char *)malloc(strlen(name) + 2); 1230 if (line == NULL) { 1231 rv = 2; 1232 goto out2; 1233 } 1234 sprintf(line, "%s\n", name); 1235 goto out1; 1236 } 1237 1238 /* 1239 * Process property with value 1240 */ 1241 data = prop->data; 1242 1243 if (fdt_data_fmt(data, len, &buf) != 0) { 1244 rv = 3; 1245 goto out2; 1246 } 1247 1248 line = (char *)malloc(strlen(name) + strlen(FDT_PROP_SEP) + 1249 strlen(buf) + 2); 1250 if (line == NULL) { 1251 sprintf(command_errbuf, "could not allocate space for string"); 1252 rv = 4; 1253 goto out2; 1254 } 1255 1256 sprintf(line, "%s" FDT_PROP_SEP "%s\n", name, buf); 1257 1258out1: 1259 pager_open(); 1260 pager_output(line); 1261 pager_close(); 1262 1263out2: 1264 if (buf) 1265 free(buf); 1266 1267 if (line) 1268 free(line); 1269 1270 return (rv); 1271} 1272 1273static int 1274fdt_modprop(int nodeoff, char *propname, void *value, char mode) 1275{ 1276 uint32_t cells[100]; 1277 char *buf; 1278 int len, rv; 1279 const struct fdt_property *p; 1280 1281 p = fdt_get_property(fdtp, nodeoff, propname, NULL); 1282 1283 if (p != NULL) { 1284 if (mode == 1) { 1285 /* Adding inexistant value in mode 1 is forbidden */ 1286 sprintf(command_errbuf, "property already exists!"); 1287 return (CMD_ERROR); 1288 } 1289 } else if (mode == 0) { 1290 sprintf(command_errbuf, "property does not exist!"); 1291 return (CMD_ERROR); 1292 } 1293 len = strlen(value); 1294 rv = 0; 1295 buf = (char *)value; 1296 1297 switch (*buf) { 1298 case '&': 1299 /* phandles */ 1300 break; 1301 case '<': 1302 /* Data cells */ 1303 len = fdt_strtovect(buf, (void *)&cells, 100, 1304 sizeof(uint32_t)); 1305 1306 rv = fdt_setprop(fdtp, nodeoff, propname, &cells, 1307 len * sizeof(uint32_t)); 1308 break; 1309 case '[': 1310 /* Data bytes */ 1311 len = fdt_strtovect(buf, (void *)&cells, 100, 1312 sizeof(uint8_t)); 1313 1314 rv = fdt_setprop(fdtp, nodeoff, propname, &cells, 1315 len * sizeof(uint8_t)); 1316 break; 1317 case '"': 1318 default: 1319 /* Default -- string */ 1320 rv = fdt_setprop_string(fdtp, nodeoff, propname, value); 1321 break; 1322 } 1323 1324 if (rv != 0) { 1325 if (rv == -FDT_ERR_NOSPACE) 1326 sprintf(command_errbuf, 1327 "Device tree blob is too small!\n"); 1328 else 1329 sprintf(command_errbuf, 1330 "Could not add/modify property!\n"); 1331 } 1332 return (rv); 1333} 1334 1335/* Merge strings from argv into a single string */ 1336static int 1337fdt_merge_strings(int argc, char *argv[], int start, char **buffer) 1338{ 1339 char *buf; 1340 int i, idx, sz; 1341 1342 *buffer = NULL; 1343 sz = 0; 1344 1345 for (i = start; i < argc; i++) 1346 sz += strlen(argv[i]); 1347 1348 /* Additional bytes for whitespaces between args */ 1349 sz += argc - start; 1350 1351 buf = (char *)malloc(sizeof(char) * sz); 1352 bzero(buf, sizeof(char) * sz); 1353 1354 if (buf == NULL) { 1355 sprintf(command_errbuf, "could not allocate space " 1356 "for string"); 1357 return (1); 1358 } 1359 1360 idx = 0; 1361 for (i = start, idx = 0; i < argc; i++) { 1362 strcpy(buf + idx, argv[i]); 1363 idx += strlen(argv[i]); 1364 buf[idx] = ' '; 1365 idx++; 1366 } 1367 buf[sz - 1] = '\0'; 1368 *buffer = buf; 1369 return (0); 1370} 1371 1372/* Extract offset and name of node/property from a given path */ 1373static int 1374fdt_extract_nameloc(char **pathp, char **namep, int *nodeoff) 1375{ 1376 int o; 1377 char *path = *pathp, *name = NULL, *subpath = NULL; 1378 1379 subpath = strrchr(path, '/'); 1380 if (subpath == NULL) { 1381 o = fdt_path_offset(fdtp, cwd); 1382 name = path; 1383 path = (char *)&cwd; 1384 } else { 1385 *subpath = '\0'; 1386 if (strlen(path) == 0) 1387 path = cwd; 1388 1389 name = subpath + 1; 1390 o = fdt_path_offset(fdtp, path); 1391 } 1392 1393 if (strlen(name) == 0) { 1394 sprintf(command_errbuf, "name not specified"); 1395 return (1); 1396 } 1397 if (o < 0) { 1398 sprintf(command_errbuf, "could not find node: '%s'", path); 1399 return (1); 1400 } 1401 *namep = name; 1402 *nodeoff = o; 1403 *pathp = path; 1404 return (0); 1405} 1406 1407static int 1408fdt_cmd_prop(int argc, char *argv[]) 1409{ 1410 char *path, *propname, *value; 1411 int o, next, depth, rv; 1412 uint32_t tag; 1413 1414 path = (argc > 2) ? argv[2] : NULL; 1415 1416 value = NULL; 1417 1418 if (argc > 3) { 1419 /* Merge property value strings into one */ 1420 if (fdt_merge_strings(argc, argv, 3, &value) != 0) 1421 return (CMD_ERROR); 1422 } else 1423 value = NULL; 1424 1425 if (path == NULL) 1426 path = cwd; 1427 1428 rv = CMD_OK; 1429 1430 if (value) { 1431 /* If value is specified -- try to modify prop. */ 1432 if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1433 return (CMD_ERROR); 1434 1435 rv = fdt_modprop(o, propname, value, 0); 1436 if (rv) 1437 return (CMD_ERROR); 1438 return (CMD_OK); 1439 1440 } 1441 /* User wants to display properties */ 1442 o = fdt_path_offset(fdtp, path); 1443 1444 if (o < 0) { 1445 sprintf(command_errbuf, "could not find node: '%s'", path); 1446 rv = CMD_ERROR; 1447 goto out; 1448 } 1449 1450 depth = 0; 1451 while (depth >= 0) { 1452 tag = fdt_next_tag(fdtp, o, &next); 1453 switch (tag) { 1454 case FDT_NOP: 1455 break; 1456 case FDT_PROP: 1457 if (depth > 1) 1458 /* Don't process properties of nested nodes */ 1459 break; 1460 1461 if (fdt_prop(o) != 0) { 1462 sprintf(command_errbuf, "could not process " 1463 "property"); 1464 rv = CMD_ERROR; 1465 goto out; 1466 } 1467 break; 1468 case FDT_BEGIN_NODE: 1469 depth++; 1470 if (depth > FDT_MAX_DEPTH) { 1471 printf("warning: nesting too deep: %d\n", 1472 depth); 1473 goto out; 1474 } 1475 break; 1476 case FDT_END_NODE: 1477 depth--; 1478 if (depth == 0) 1479 /* 1480 * This is the end of our starting node, force 1481 * the loop finish. 1482 */ 1483 depth--; 1484 break; 1485 } 1486 o = next; 1487 } 1488out: 1489 return (rv); 1490} 1491 1492static int 1493fdt_cmd_mkprop(int argc, char *argv[]) 1494{ 1495 int o; 1496 char *path, *propname, *value; 1497 1498 path = (argc > 2) ? argv[2] : NULL; 1499 1500 value = NULL; 1501 1502 if (argc > 3) { 1503 /* Merge property value strings into one */ 1504 if (fdt_merge_strings(argc, argv, 3, &value) != 0) 1505 return (CMD_ERROR); 1506 } else 1507 value = NULL; 1508 1509 if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1510 return (CMD_ERROR); 1511 1512 if (fdt_modprop(o, propname, value, 1)) 1513 return (CMD_ERROR); 1514 1515 return (CMD_OK); 1516} 1517 1518static int 1519fdt_cmd_rm(int argc, char *argv[]) 1520{ 1521 int o, rv; 1522 char *path = NULL, *propname; 1523 1524 if (argc > 2) 1525 path = argv[2]; 1526 else { 1527 sprintf(command_errbuf, "no node/property name specified"); 1528 return (CMD_ERROR); 1529 } 1530 1531 o = fdt_path_offset(fdtp, path); 1532 if (o < 0) { 1533 /* If node not found -- try to find & delete property */ 1534 if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1535 return (CMD_ERROR); 1536 1537 if ((rv = fdt_delprop(fdtp, o, propname)) != 0) { 1538 sprintf(command_errbuf, "could not delete" 1539 "%s\n", (rv == -FDT_ERR_NOTFOUND) ? 1540 "(property/node does not exist)" : ""); 1541 return (CMD_ERROR); 1542 1543 } else 1544 return (CMD_OK); 1545 } 1546 /* If node exists -- remove node */ 1547 rv = fdt_del_node(fdtp, o); 1548 if (rv) { 1549 sprintf(command_errbuf, "could not delete node"); 1550 return (CMD_ERROR); 1551 } 1552 return (CMD_OK); 1553} 1554 1555static int 1556fdt_cmd_mknode(int argc, char *argv[]) 1557{ 1558 int o, rv; 1559 char *path = NULL, *nodename = NULL; 1560 1561 if (argc > 2) 1562 path = argv[2]; 1563 else { 1564 sprintf(command_errbuf, "no node name specified"); 1565 return (CMD_ERROR); 1566 } 1567 1568 if (fdt_extract_nameloc(&path, &nodename, &o) != 0) 1569 return (CMD_ERROR); 1570 1571 rv = fdt_add_subnode(fdtp, o, nodename); 1572 1573 if (rv < 0) { 1574 if (rv == -FDT_ERR_NOSPACE) 1575 sprintf(command_errbuf, 1576 "Device tree blob is too small!\n"); 1577 else 1578 sprintf(command_errbuf, 1579 "Could not add node!\n"); 1580 return (CMD_ERROR); 1581 } 1582 return (CMD_OK); 1583} 1584 1585static int 1586fdt_cmd_pwd(int argc, char *argv[]) 1587{ 1588 char line[FDT_CWD_LEN]; 1589 1590 pager_open(); 1591 sprintf(line, "%s\n", cwd); 1592 pager_output(line); 1593 pager_close(); 1594 return (CMD_OK); 1595} 1596 1597static int 1598fdt_cmd_mres(int argc, char *argv[]) 1599{ 1600 uint64_t start, size; 1601 int i, total; 1602 char line[80]; 1603 1604 pager_open(); 1605 total = fdt_num_mem_rsv(fdtp); 1606 if (total > 0) { 1607 pager_output("Reserved memory regions:\n"); 1608 for (i = 0; i < total; i++) { 1609 fdt_get_mem_rsv(fdtp, i, &start, &size); 1610 sprintf(line, "reg#%d: (start: 0x%jx, size: 0x%jx)\n", 1611 i, start, size); 1612 pager_output(line); 1613 } 1614 } else 1615 pager_output("No reserved memory regions\n"); 1616 pager_close(); 1617 1618 return (CMD_OK); 1619} 1620 1621static int 1622fdt_cmd_nyi(int argc, char *argv[]) 1623{ 1624 1625 printf("command not yet implemented\n"); 1626 return (CMD_ERROR); 1627} 1628