fdt_loader_cmd.c revision 265066
1208538Sraj/*- 2208538Sraj * Copyright (c) 2009-2010 The FreeBSD Foundation 3208538Sraj * All rights reserved. 4208538Sraj * 5208538Sraj * This software was developed by Semihalf under sponsorship from 6208538Sraj * the FreeBSD Foundation. 7208538Sraj * 8208538Sraj * Redistribution and use in source and binary forms, with or without 9208538Sraj * modification, are permitted provided that the following conditions 10208538Sraj * are met: 11208538Sraj * 1. Redistributions of source code must retain the above copyright 12208538Sraj * notice, this list of conditions and the following disclaimer. 13208538Sraj * 2. Redistributions in binary form must reproduce the above copyright 14208538Sraj * notice, this list of conditions and the following disclaimer in the 15208538Sraj * documentation and/or other materials provided with the distribution. 16208538Sraj * 17208538Sraj * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18208538Sraj * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19208538Sraj * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20208538Sraj * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21208538Sraj * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22208538Sraj * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23208538Sraj * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24208538Sraj * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25208538Sraj * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26208538Sraj * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27208538Sraj * SUCH DAMAGE. 28208538Sraj */ 29208538Sraj 30208538Sraj#include <sys/cdefs.h> 31208538Sraj__FBSDID("$FreeBSD: stable/10/sys/boot/fdt/fdt_loader_cmd.c 265066 2014-04-29 00:13:25Z ian $"); 32208538Sraj 33208538Sraj#include <stand.h> 34208538Sraj#include <fdt.h> 35208538Sraj#include <libfdt.h> 36233230Sraj#include <sys/param.h> 37233230Sraj#include <sys/linker.h> 38233230Sraj#include <machine/elf.h> 39208538Sraj 40208538Sraj#include "bootstrap.h" 41208538Sraj#include "glue.h" 42208538Sraj 43208538Sraj#ifdef DEBUG 44208538Sraj#define debugf(fmt, args...) do { printf("%s(): ", __func__); \ 45208538Sraj printf(fmt,##args); } while (0) 46208538Sraj#else 47208538Sraj#define debugf(fmt, args...) 48208538Sraj#endif 49208538Sraj 50208538Sraj#define FDT_CWD_LEN 256 51208538Sraj#define FDT_MAX_DEPTH 6 52208538Sraj 53208538Sraj#define FDT_PROP_SEP " = " 54208538Sraj 55208538Sraj#define STR(number) #number 56208538Sraj#define STRINGIFY(number) STR(number) 57208538Sraj 58235529Skientzle#define COPYOUT(s,d,l) archsw.arch_copyout(s, d, l) 59235529Skientzle#define COPYIN(s,d,l) archsw.arch_copyin(s, d, l) 60233230Sraj 61233230Sraj#define FDT_STATIC_DTB_SYMBOL "fdt_static_dtb" 62233230Sraj 63243693Sgonzo#define CMD_REQUIRES_BLOB 0x01 64243693Sgonzo 65247201Skientzle/* Location of FDT yet to be loaded. */ 66247250Skientzle/* This may be in read-only memory, so can't be manipulated directly. */ 67247201Skientzlestatic struct fdt_header *fdt_to_load = NULL; 68247250Skientzle/* Location of FDT on heap. */ 69247250Skientzle/* This is the copy we actually manipulate. */ 70208538Srajstatic struct fdt_header *fdtp = NULL; 71235529Skientzle/* Size of FDT blob */ 72235529Skientzlestatic size_t fdtp_size = 0; 73247250Skientzle/* Location of FDT in kernel or module. */ 74247250Skientzle/* This won't be set if FDT is loaded from disk or memory. */ 75247250Skientzle/* If it is set, we'll update it when fdt_copy() gets called. */ 76235529Skientzlestatic vm_offset_t fdtp_va = 0; 77208538Sraj 78243693Sgonzostatic int fdt_load_dtb(vm_offset_t va); 79243693Sgonzo 80208538Srajstatic int fdt_cmd_nyi(int argc, char *argv[]); 81208538Sraj 82243693Sgonzostatic int fdt_cmd_addr(int argc, char *argv[]); 83208538Srajstatic int fdt_cmd_mkprop(int argc, char *argv[]); 84208538Srajstatic int fdt_cmd_cd(int argc, char *argv[]); 85208538Srajstatic int fdt_cmd_hdr(int argc, char *argv[]); 86208538Srajstatic int fdt_cmd_ls(int argc, char *argv[]); 87208538Srajstatic int fdt_cmd_prop(int argc, char *argv[]); 88208538Srajstatic int fdt_cmd_pwd(int argc, char *argv[]); 89208538Srajstatic int fdt_cmd_rm(int argc, char *argv[]); 90208538Srajstatic int fdt_cmd_mknode(int argc, char *argv[]); 91243693Sgonzostatic int fdt_cmd_mres(int argc, char *argv[]); 92208538Sraj 93208538Srajtypedef int cmdf_t(int, char *[]); 94208538Sraj 95208538Srajstruct cmdtab { 96208538Sraj char *name; 97208538Sraj cmdf_t *handler; 98243693Sgonzo int flags; 99208538Sraj}; 100208538Sraj 101208538Srajstatic const struct cmdtab commands[] = { 102243693Sgonzo { "addr", &fdt_cmd_addr, 0 }, 103243693Sgonzo { "alias", &fdt_cmd_nyi, 0 }, 104243693Sgonzo { "cd", &fdt_cmd_cd, CMD_REQUIRES_BLOB }, 105243693Sgonzo { "header", &fdt_cmd_hdr, CMD_REQUIRES_BLOB }, 106243693Sgonzo { "ls", &fdt_cmd_ls, CMD_REQUIRES_BLOB }, 107243693Sgonzo { "mknode", &fdt_cmd_mknode, CMD_REQUIRES_BLOB }, 108243693Sgonzo { "mkprop", &fdt_cmd_mkprop, CMD_REQUIRES_BLOB }, 109243693Sgonzo { "mres", &fdt_cmd_mres, CMD_REQUIRES_BLOB }, 110243693Sgonzo { "prop", &fdt_cmd_prop, CMD_REQUIRES_BLOB }, 111243693Sgonzo { "pwd", &fdt_cmd_pwd, CMD_REQUIRES_BLOB }, 112243693Sgonzo { "rm", &fdt_cmd_rm, CMD_REQUIRES_BLOB }, 113208538Sraj { NULL, NULL } 114208538Sraj}; 115208538Sraj 116208538Srajstatic char cwd[FDT_CWD_LEN] = "/"; 117208538Sraj 118233230Srajstatic vm_offset_t 119235529Skientzlefdt_find_static_dtb() 120233230Sraj{ 121248121Sian Elf_Ehdr *ehdr; 122248121Sian Elf_Shdr *shdr; 123233230Sraj Elf_Sym sym; 124248121Sian vm_offset_t strtab, symtab, fdt_start; 125233230Sraj uint64_t offs; 126233230Sraj struct preloaded_file *kfp; 127233230Sraj struct file_metadata *md; 128235529Skientzle char *strp; 129248121Sian int i, sym_count; 130233230Sraj 131248934Skientzle sym_count = symtab = strtab = 0; 132235529Skientzle strp = NULL; 133233230Sraj 134233230Sraj offs = __elfN(relocation_offset); 135233230Sraj 136233230Sraj kfp = file_findfile(NULL, NULL); 137233230Sraj if (kfp == NULL) 138233230Sraj return (0); 139233230Sraj 140248121Sian /* Locate the dynamic symbols and strtab. */ 141248121Sian md = file_findmetadata(kfp, MODINFOMD_ELFHDR); 142233230Sraj if (md == NULL) 143233230Sraj return (0); 144248121Sian ehdr = (Elf_Ehdr *)md->md_data; 145233230Sraj 146248121Sian md = file_findmetadata(kfp, MODINFOMD_SHDR); 147233230Sraj if (md == NULL) 148233230Sraj return (0); 149248121Sian shdr = (Elf_Shdr *)md->md_data; 150233230Sraj 151248121Sian for (i = 0; i < ehdr->e_shnum; ++i) { 152248121Sian if (shdr[i].sh_type == SHT_DYNSYM && symtab == 0) { 153248121Sian symtab = shdr[i].sh_addr + offs; 154248121Sian sym_count = shdr[i].sh_size / sizeof(Elf_Sym); 155248121Sian } else if (shdr[i].sh_type == SHT_STRTAB && strtab == 0) { 156248121Sian strtab = shdr[i].sh_addr + offs; 157233230Sraj } 158233230Sraj } 159233230Sraj 160233230Sraj /* 161233230Sraj * The most efficent way to find a symbol would be to calculate a 162233230Sraj * hash, find proper bucket and chain, and thus find a symbol. 163233230Sraj * However, that would involve code duplication (e.g. for hash 164233230Sraj * function). So we're using simpler and a bit slower way: we're 165233230Sraj * iterating through symbols, searching for the one which name is 166233230Sraj * 'equal' to 'fdt_static_dtb'. To speed up the process a little bit, 167233230Sraj * we are eliminating symbols type of which is not STT_NOTYPE, or(and) 168233230Sraj * those which binding attribute is not STB_GLOBAL. 169233230Sraj */ 170235529Skientzle fdt_start = 0; 171235529Skientzle while (sym_count > 0 && fdt_start == 0) { 172235529Skientzle COPYOUT(symtab, &sym, sizeof(sym)); 173235529Skientzle symtab += sizeof(sym); 174235529Skientzle --sym_count; 175233230Sraj if (ELF_ST_BIND(sym.st_info) != STB_GLOBAL || 176233230Sraj ELF_ST_TYPE(sym.st_info) != STT_NOTYPE) 177233230Sraj continue; 178235529Skientzle strp = strdupout(strtab + sym.st_name); 179235529Skientzle if (strcmp(strp, FDT_STATIC_DTB_SYMBOL) == 0) 180235529Skientzle fdt_start = (vm_offset_t)sym.st_value + offs; 181233230Sraj free(strp); 182233230Sraj } 183235529Skientzle return (fdt_start); 184233230Sraj} 185233230Sraj 186208538Srajstatic int 187243693Sgonzofdt_load_dtb(vm_offset_t va) 188208538Sraj{ 189235529Skientzle struct fdt_header header; 190208538Sraj int err; 191208538Sraj 192243693Sgonzo COPYOUT(va, &header, sizeof(header)); 193243693Sgonzo err = fdt_check_header(&header); 194243693Sgonzo if (err < 0) { 195243693Sgonzo if (err == -FDT_ERR_BADVERSION) 196243693Sgonzo sprintf(command_errbuf, 197243693Sgonzo "incompatible blob version: %d, should be: %d", 198243693Sgonzo fdt_version(fdtp), FDT_LAST_SUPPORTED_VERSION); 199243693Sgonzo 200243693Sgonzo else 201243693Sgonzo sprintf(command_errbuf, "error validating blob: %s", 202243693Sgonzo fdt_strerror(err)); 203243693Sgonzo return (1); 204243693Sgonzo } 205243693Sgonzo 206208538Sraj /* 207243693Sgonzo * Release previous blob 208208538Sraj */ 209243693Sgonzo if (fdtp) 210243693Sgonzo free(fdtp); 211208538Sraj 212235529Skientzle fdtp_size = fdt_totalsize(&header); 213235529Skientzle fdtp = malloc(fdtp_size); 214243693Sgonzo 215235529Skientzle if (fdtp == NULL) { 216235529Skientzle command_errmsg = "can't allocate memory for device tree copy"; 217243693Sgonzo return (1); 218235529Skientzle } 219235529Skientzle 220243693Sgonzo fdtp_va = va; 221243693Sgonzo COPYOUT(va, fdtp, fdtp_size); 222243693Sgonzo debugf("DTB blob found at 0x%jx, size: 0x%jx\n", (uintmax_t)va, (uintmax_t)fdtp_size); 223208538Sraj 224243693Sgonzo return (0); 225243693Sgonzo} 226243693Sgonzo 227243693Sgonzostatic int 228247045Skientzlefdt_load_dtb_addr(struct fdt_header *header) 229243693Sgonzo{ 230265065Sian int err; 231243693Sgonzo 232247250Skientzle fdtp_size = fdt_totalsize(header); 233265065Sian err = fdt_check_header(header); 234265065Sian if (err < 0) { 235265065Sian sprintf(command_errbuf, "error validating blob: %s", 236265065Sian fdt_strerror(err)); 237265065Sian return (err); 238265065Sian } 239247250Skientzle free(fdtp); 240247250Skientzle if ((fdtp = malloc(fdtp_size)) == NULL) { 241247250Skientzle command_errmsg = "can't allocate memory for device tree copy"; 242247045Skientzle return (1); 243208538Sraj } 244247250Skientzle 245247250Skientzle fdtp_va = 0; // Don't write this back into module or kernel. 246247250Skientzle bcopy(header, fdtp, fdtp_size); 247247250Skientzle return (0); 248247045Skientzle} 249243693Sgonzo 250247045Skientzlestatic int 251247045Skientzlefdt_setup_fdtp() 252247045Skientzle{ 253265066Sian struct preloaded_file *bfp; 254265066Sian struct fdt_header *hdr; 255265066Sian const char *s; 256265066Sian char *p; 257265066Sian vm_offset_t va; 258265066Sian 259265066Sian if ((bfp = file_findfile(NULL, "dtb")) != NULL) { 260265066Sian printf("Using DTB from loaded file.\n"); 261265066Sian return fdt_load_dtb(bfp->f_addr); 262265066Sian } 263265066Sian 264265066Sian if (fdt_to_load != NULL) { 265265066Sian printf("Using DTB from memory address 0x%08X.\n", 266265066Sian (unsigned int)fdt_to_load); 267265066Sian return fdt_load_dtb_addr(fdt_to_load); 268265066Sian } 269247045Skientzle 270265066Sian /* Board vendors use both fdtaddr and fdt_addr names. Grrrr. */ 271265066Sian s = ub_env_get("fdtaddr"); 272265066Sian if (s == NULL) 273265066Sian s = ub_env_get("fdt_addr"); 274265066Sian if (s != NULL && *s != '\0') { 275265066Sian hdr = (struct fdt_header *)strtoul(s, &p, 16); 276265066Sian if (*p == '\0') { 277265066Sian printf("Using DTB provided by U-Boot.\n"); 278265066Sian return fdt_load_dtb_addr(hdr); 279265066Sian } 280265066Sian } 281265066Sian 282265066Sian if ((va = fdt_find_static_dtb()) != 0) { 283265066Sian printf("Using DTB compiled into kernel.\n"); 284265066Sian return (fdt_load_dtb(va)); 285265066Sian } 286265066Sian 287265066Sian command_errmsg = "no device tree blob found!"; 288265066Sian return (1); 289208538Sraj} 290208538Sraj 291208538Sraj#define fdt_strtovect(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \ 292208538Sraj (cellbuf), (lim), (cellsize), 0); 293208538Sraj 294208538Sraj/* Force using base 16 */ 295208538Sraj#define fdt_strtovectx(str, cellbuf, lim, cellsize) _fdt_strtovect((str), \ 296208538Sraj (cellbuf), (lim), (cellsize), 16); 297208538Sraj 298208538Srajstatic int 299208538Sraj_fdt_strtovect(char *str, void *cellbuf, int lim, unsigned char cellsize, 300208538Sraj uint8_t base) 301208538Sraj{ 302208538Sraj char *buf = str; 303208538Sraj char *end = str + strlen(str) - 2; 304208538Sraj uint32_t *u32buf = NULL; 305208538Sraj uint8_t *u8buf = NULL; 306208538Sraj int cnt = 0; 307208538Sraj 308208538Sraj if (cellsize == sizeof(uint32_t)) 309208538Sraj u32buf = (uint32_t *)cellbuf; 310208538Sraj else 311208538Sraj u8buf = (uint8_t *)cellbuf; 312208538Sraj 313208538Sraj if (lim == 0) 314208538Sraj return (0); 315208538Sraj 316208538Sraj while (buf < end) { 317208538Sraj 318208538Sraj /* Skip white whitespace(s)/separators */ 319208538Sraj while (!isxdigit(*buf) && buf < end) 320208538Sraj buf++; 321208538Sraj 322208538Sraj if (u32buf != NULL) 323208538Sraj u32buf[cnt] = 324208538Sraj cpu_to_fdt32((uint32_t)strtol(buf, NULL, base)); 325208538Sraj 326208538Sraj else 327208538Sraj u8buf[cnt] = (uint8_t)strtol(buf, NULL, base); 328208538Sraj 329208538Sraj if (cnt + 1 <= lim - 1) 330208538Sraj cnt++; 331208538Sraj else 332208538Sraj break; 333208538Sraj buf++; 334208538Sraj /* Find another number */ 335208538Sraj while ((isxdigit(*buf) || *buf == 'x') && buf < end) 336208538Sraj buf++; 337208538Sraj } 338208538Sraj return (cnt); 339208538Sraj} 340208538Sraj 341208538Sraj#define TMP_MAX_ETH 8 342208538Sraj 343247250Skientzlestatic void 344208538Srajfixup_ethernet(const char *env, char *ethstr, int *eth_no, int len) 345208538Sraj{ 346208538Sraj char *end, *str; 347208538Sraj uint8_t tmp_addr[6]; 348208538Sraj int i, n; 349208538Sraj 350208538Sraj /* Extract interface number */ 351208538Sraj i = strtol(env + 3, &end, 10); 352208538Sraj if (end == (env + 3)) 353208538Sraj /* 'ethaddr' means interface 0 address */ 354208538Sraj n = 0; 355208538Sraj else 356208538Sraj n = i; 357208538Sraj 358208538Sraj if (n > TMP_MAX_ETH) 359208538Sraj return; 360208538Sraj 361208538Sraj str = ub_env_get(env); 362208538Sraj 363208538Sraj /* Convert macaddr string into a vector of uints */ 364208538Sraj fdt_strtovectx(str, &tmp_addr, 6, sizeof(uint8_t)); 365208538Sraj if (n != 0) { 366208538Sraj i = strlen(env) - 7; 367208538Sraj strncpy(ethstr + 8, env + 3, i); 368208538Sraj } 369208538Sraj /* Set actual property to a value from vect */ 370208538Sraj fdt_setprop(fdtp, fdt_path_offset(fdtp, ethstr), 371208538Sraj "local-mac-address", &tmp_addr, 6 * sizeof(uint8_t)); 372208538Sraj 373208538Sraj /* Clear ethernet..XXXX.. string */ 374208538Sraj bzero(ethstr + 8, len - 8); 375208538Sraj 376208538Sraj if (n + 1 > *eth_no) 377208538Sraj *eth_no = n + 1; 378208538Sraj} 379208538Sraj 380247250Skientzlestatic void 381208538Srajfixup_cpubusfreqs(unsigned long cpufreq, unsigned long busfreq) 382208538Sraj{ 383208538Sraj int lo, o = 0, o2, maxo = 0, depth; 384208538Sraj const uint32_t zero = 0; 385208538Sraj 386208538Sraj /* We want to modify every subnode of /cpus */ 387208538Sraj o = fdt_path_offset(fdtp, "/cpus"); 388235261Skientzle if (o < 0) 389235261Skientzle return; 390208538Sraj 391208538Sraj /* maxo should contain offset of node next to /cpus */ 392208538Sraj depth = 0; 393208538Sraj maxo = o; 394208538Sraj while (depth != -1) 395208538Sraj maxo = fdt_next_node(fdtp, maxo, &depth); 396208538Sraj 397208538Sraj /* Find CPU frequency properties */ 398208538Sraj o = fdt_node_offset_by_prop_value(fdtp, o, "clock-frequency", 399208538Sraj &zero, sizeof(uint32_t)); 400208538Sraj 401208538Sraj o2 = fdt_node_offset_by_prop_value(fdtp, o, "bus-frequency", &zero, 402208538Sraj sizeof(uint32_t)); 403208538Sraj 404208538Sraj lo = MIN(o, o2); 405208538Sraj 406208538Sraj while (o != -FDT_ERR_NOTFOUND && o2 != -FDT_ERR_NOTFOUND) { 407208538Sraj 408208538Sraj o = fdt_node_offset_by_prop_value(fdtp, lo, 409208538Sraj "clock-frequency", &zero, sizeof(uint32_t)); 410208538Sraj 411208538Sraj o2 = fdt_node_offset_by_prop_value(fdtp, lo, "bus-frequency", 412208538Sraj &zero, sizeof(uint32_t)); 413208538Sraj 414208538Sraj /* We're only interested in /cpus subnode(s) */ 415208538Sraj if (lo > maxo) 416208538Sraj break; 417208538Sraj 418208538Sraj fdt_setprop_inplace_cell(fdtp, lo, "clock-frequency", 419208538Sraj (uint32_t)cpufreq); 420208538Sraj 421208538Sraj fdt_setprop_inplace_cell(fdtp, lo, "bus-frequency", 422208538Sraj (uint32_t)busfreq); 423208538Sraj 424208538Sraj lo = MIN(o, o2); 425208538Sraj } 426208538Sraj} 427208538Sraj 428247250Skientzlestatic int 429208538Srajfdt_reg_valid(uint32_t *reg, int len, int addr_cells, int size_cells) 430208538Sraj{ 431208538Sraj int cells_in_tuple, i, tuples, tuple_size; 432208538Sraj uint32_t cur_start, cur_size; 433208538Sraj 434208538Sraj cells_in_tuple = (addr_cells + size_cells); 435208538Sraj tuple_size = cells_in_tuple * sizeof(uint32_t); 436208538Sraj tuples = len / tuple_size; 437208538Sraj if (tuples == 0) 438208538Sraj return (EINVAL); 439208538Sraj 440208538Sraj for (i = 0; i < tuples; i++) { 441208538Sraj if (addr_cells == 2) 442208538Sraj cur_start = fdt64_to_cpu(reg[i * cells_in_tuple]); 443208538Sraj else 444208538Sraj cur_start = fdt32_to_cpu(reg[i * cells_in_tuple]); 445208538Sraj 446208538Sraj if (size_cells == 2) 447208538Sraj cur_size = fdt64_to_cpu(reg[i * cells_in_tuple + 2]); 448208538Sraj else 449208538Sraj cur_size = fdt32_to_cpu(reg[i * cells_in_tuple + 1]); 450208538Sraj 451208538Sraj if (cur_size == 0) 452208538Sraj return (EINVAL); 453208538Sraj 454208538Sraj debugf(" reg#%d (start: 0x%0x size: 0x%0x) valid!\n", 455208538Sraj i, cur_start, cur_size); 456208538Sraj } 457208538Sraj return (0); 458208538Sraj} 459208538Sraj 460247250Skientzlestatic void 461208538Srajfixup_memory(struct sys_info *si) 462208538Sraj{ 463208538Sraj struct mem_region *curmr; 464208538Sraj uint32_t addr_cells, size_cells; 465208538Sraj uint32_t *addr_cellsp, *reg, *size_cellsp; 466208538Sraj int err, i, len, memory, realmrno, root; 467208538Sraj uint8_t *buf, *sb; 468243693Sgonzo uint64_t rstart, rsize; 469243693Sgonzo int reserved; 470208538Sraj 471208538Sraj root = fdt_path_offset(fdtp, "/"); 472208538Sraj if (root < 0) { 473208538Sraj sprintf(command_errbuf, "Could not find root node !"); 474208538Sraj return; 475208538Sraj } 476208538Sraj 477208538Sraj memory = fdt_path_offset(fdtp, "/memory"); 478208538Sraj if (memory <= 0) { 479208538Sraj /* Create proper '/memory' node. */ 480208538Sraj memory = fdt_add_subnode(fdtp, root, "memory"); 481208538Sraj if (memory <= 0) { 482208538Sraj sprintf(command_errbuf, "Could not fixup '/memory' " 483208538Sraj "node, error code : %d!\n", memory); 484208538Sraj return; 485208538Sraj } 486208538Sraj 487208538Sraj err = fdt_setprop(fdtp, memory, "device_type", "memory", 488208538Sraj sizeof("memory")); 489208538Sraj 490208538Sraj if (err < 0) 491208538Sraj return; 492208538Sraj } 493208538Sraj 494208538Sraj addr_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#address-cells", 495208538Sraj NULL); 496208538Sraj size_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#size-cells", NULL); 497208538Sraj 498208538Sraj if (addr_cellsp == NULL || size_cellsp == NULL) { 499208538Sraj sprintf(command_errbuf, "Could not fixup '/memory' node : " 500208538Sraj "%s %s property not found in root node!\n", 501208538Sraj (!addr_cellsp) ? "#address-cells" : "", 502208538Sraj (!size_cellsp) ? "#size-cells" : ""); 503208538Sraj return; 504208538Sraj } 505208538Sraj 506208538Sraj addr_cells = fdt32_to_cpu(*addr_cellsp); 507208538Sraj size_cells = fdt32_to_cpu(*size_cellsp); 508208538Sraj 509243693Sgonzo /* 510243693Sgonzo * Convert memreserve data to memreserve property 511243693Sgonzo * Check if property already exists 512243693Sgonzo */ 513243693Sgonzo reserved = fdt_num_mem_rsv(fdtp); 514243693Sgonzo if (reserved && 515243693Sgonzo (fdt_getprop(fdtp, root, "memreserve", NULL) == NULL)) { 516243693Sgonzo len = (addr_cells + size_cells) * reserved * sizeof(uint32_t); 517243693Sgonzo sb = buf = (uint8_t *)malloc(len); 518243693Sgonzo if (!buf) 519243693Sgonzo return; 520243693Sgonzo 521243693Sgonzo bzero(buf, len); 522243693Sgonzo 523243693Sgonzo for (i = 0; i < reserved; i++) { 524243693Sgonzo curmr = &si->mr[i]; 525243693Sgonzo if (fdt_get_mem_rsv(fdtp, i, &rstart, &rsize)) 526243693Sgonzo break; 527243693Sgonzo if (rsize) { 528243693Sgonzo /* Ensure endianess, and put cells into a buffer */ 529243693Sgonzo if (addr_cells == 2) 530243693Sgonzo *(uint64_t *)buf = 531243693Sgonzo cpu_to_fdt64(rstart); 532243693Sgonzo else 533243693Sgonzo *(uint32_t *)buf = 534243693Sgonzo cpu_to_fdt32(rstart); 535243693Sgonzo 536243693Sgonzo buf += sizeof(uint32_t) * addr_cells; 537243693Sgonzo if (size_cells == 2) 538243693Sgonzo *(uint64_t *)buf = 539243693Sgonzo cpu_to_fdt64(rsize); 540243693Sgonzo else 541243693Sgonzo *(uint32_t *)buf = 542243693Sgonzo cpu_to_fdt32(rsize); 543243693Sgonzo 544243693Sgonzo buf += sizeof(uint32_t) * size_cells; 545243693Sgonzo } 546243693Sgonzo } 547243693Sgonzo 548243693Sgonzo /* Set property */ 549243693Sgonzo if ((err = fdt_setprop(fdtp, root, "memreserve", sb, len)) < 0) 550243693Sgonzo printf("Could not fixup 'memreserve' property.\n"); 551243693Sgonzo 552243693Sgonzo free(sb); 553243693Sgonzo } 554243693Sgonzo 555208538Sraj /* Count valid memory regions entries in sysinfo. */ 556208538Sraj realmrno = si->mr_no; 557208538Sraj for (i = 0; i < si->mr_no; i++) 558208538Sraj if (si->mr[i].start == 0 && si->mr[i].size == 0) 559208538Sraj realmrno--; 560208538Sraj 561208538Sraj if (realmrno == 0) { 562208538Sraj sprintf(command_errbuf, "Could not fixup '/memory' node : " 563208538Sraj "sysinfo doesn't contain valid memory regions info!\n"); 564208538Sraj return; 565208538Sraj } 566208538Sraj 567208538Sraj if ((reg = (uint32_t *)fdt_getprop(fdtp, memory, "reg", 568208538Sraj &len)) != NULL) { 569208538Sraj 570208538Sraj if (fdt_reg_valid(reg, len, addr_cells, size_cells) == 0) 571208538Sraj /* 572208538Sraj * Do not apply fixup if existing 'reg' property 573208538Sraj * seems to be valid. 574208538Sraj */ 575208538Sraj return; 576208538Sraj } 577208538Sraj 578208538Sraj len = (addr_cells + size_cells) * realmrno * sizeof(uint32_t); 579208538Sraj sb = buf = (uint8_t *)malloc(len); 580208538Sraj if (!buf) 581208538Sraj return; 582208538Sraj 583208538Sraj bzero(buf, len); 584208538Sraj 585208538Sraj for (i = 0; i < si->mr_no; i++) { 586208538Sraj curmr = &si->mr[i]; 587208538Sraj if (curmr->size != 0) { 588208538Sraj /* Ensure endianess, and put cells into a buffer */ 589208538Sraj if (addr_cells == 2) 590208538Sraj *(uint64_t *)buf = 591208538Sraj cpu_to_fdt64(curmr->start); 592208538Sraj else 593208538Sraj *(uint32_t *)buf = 594208538Sraj cpu_to_fdt32(curmr->start); 595208538Sraj 596208538Sraj buf += sizeof(uint32_t) * addr_cells; 597208538Sraj if (size_cells == 2) 598208538Sraj *(uint64_t *)buf = 599208538Sraj cpu_to_fdt64(curmr->size); 600208538Sraj else 601208538Sraj *(uint32_t *)buf = 602208538Sraj cpu_to_fdt32(curmr->size); 603208538Sraj 604208538Sraj buf += sizeof(uint32_t) * size_cells; 605208538Sraj } 606208538Sraj } 607208538Sraj 608208538Sraj /* Set property */ 609208538Sraj if ((err = fdt_setprop(fdtp, memory, "reg", sb, len)) < 0) 610208538Sraj sprintf(command_errbuf, "Could not fixup '/memory' node.\n"); 611243693Sgonzo 612243693Sgonzo free(sb); 613208538Sraj} 614208538Sraj 615247250Skientzlestatic void 616208538Srajfixup_stdout(const char *env) 617208538Sraj{ 618208538Sraj const char *str; 619208538Sraj char *ptr; 620208538Sraj int serialno; 621208538Sraj int len, no, sero; 622208538Sraj const struct fdt_property *prop; 623208538Sraj char *tmp[10]; 624208538Sraj 625208538Sraj str = ub_env_get(env); 626208538Sraj ptr = (char *)str + strlen(str) - 1; 627208538Sraj while (ptr > str && isdigit(*(str - 1))) 628208538Sraj str--; 629208538Sraj 630208538Sraj if (ptr == str) 631208538Sraj return; 632208538Sraj 633208538Sraj serialno = (int)strtol(ptr, NULL, 0); 634208538Sraj no = fdt_path_offset(fdtp, "/chosen"); 635208538Sraj if (no < 0) 636208538Sraj return; 637208538Sraj 638208538Sraj prop = fdt_get_property(fdtp, no, "stdout", &len); 639208538Sraj 640208538Sraj /* If /chosen/stdout does not extist, create it */ 641208538Sraj if (prop == NULL || (prop != NULL && len == 0)) { 642208538Sraj 643208538Sraj bzero(tmp, 10 * sizeof(char)); 644208538Sraj strcpy((char *)&tmp, "serial"); 645208538Sraj if (strlen(ptr) > 3) 646208538Sraj /* Serial number too long */ 647208538Sraj return; 648208538Sraj 649208538Sraj strncpy((char *)tmp + 6, ptr, 3); 650208538Sraj sero = fdt_path_offset(fdtp, (const char *)tmp); 651208538Sraj if (sero < 0) 652208538Sraj /* 653208538Sraj * If serial device we're trying to assign 654208538Sraj * stdout to doesn't exist in DT -- return. 655208538Sraj */ 656208538Sraj return; 657208538Sraj 658208538Sraj fdt_setprop(fdtp, no, "stdout", &tmp, 659208538Sraj strlen((char *)&tmp) + 1); 660208538Sraj fdt_setprop(fdtp, no, "stdin", &tmp, 661208538Sraj strlen((char *)&tmp) + 1); 662208538Sraj } 663208538Sraj} 664208538Sraj 665233230Sraj/* 666233230Sraj * Locate the blob, fix it up and return its location. 667233230Sraj */ 668247250Skientzlestatic int 669208538Srajfdt_fixup(void) 670208538Sraj{ 671208538Sraj const char *env; 672208538Sraj char *ethstr; 673265065Sian int chosen, eth_no, len; 674208538Sraj struct sys_info *si; 675208538Sraj 676208538Sraj env = NULL; 677208538Sraj eth_no = 0; 678208538Sraj ethstr = NULL; 679208538Sraj len = 0; 680208538Sraj 681265065Sian if (fdtp == NULL && fdt_setup_fdtp() != 0) 682265065Sian return (0); 683208538Sraj 684208538Sraj /* Create /chosen node (if not exists) */ 685208538Sraj if ((chosen = fdt_subnode_offset(fdtp, 0, "chosen")) == 686208538Sraj -FDT_ERR_NOTFOUND) 687208538Sraj chosen = fdt_add_subnode(fdtp, 0, "chosen"); 688208538Sraj 689208538Sraj /* Value assigned to fixup-applied does not matter. */ 690208538Sraj if (fdt_getprop(fdtp, chosen, "fixup-applied", NULL)) 691247250Skientzle return (1); 692208538Sraj 693208538Sraj /* Acquire sys_info */ 694208538Sraj si = ub_get_sys_info(); 695208538Sraj 696208538Sraj while ((env = ub_env_enum(env)) != NULL) { 697208538Sraj if (strncmp(env, "eth", 3) == 0 && 698208538Sraj strncmp(env + (strlen(env) - 4), "addr", 4) == 0) { 699208538Sraj /* 700208538Sraj * Handle Ethernet addrs: parse uboot env eth%daddr 701208538Sraj */ 702208538Sraj 703208538Sraj if (!eth_no) { 704208538Sraj /* 705208538Sraj * Check how many chars we will need to store 706208538Sraj * maximal eth iface number. 707208538Sraj */ 708208538Sraj len = strlen(STRINGIFY(TMP_MAX_ETH)) + 709208538Sraj strlen("ethernet"); 710208538Sraj 711208538Sraj /* 712208538Sraj * Reserve mem for string "ethernet" and len 713208538Sraj * chars for iface no. 714208538Sraj */ 715208538Sraj ethstr = (char *)malloc(len * sizeof(char)); 716208538Sraj bzero(ethstr, len * sizeof(char)); 717208538Sraj strcpy(ethstr, "ethernet0"); 718208538Sraj } 719208538Sraj 720208538Sraj /* Modify blob */ 721208538Sraj fixup_ethernet(env, ethstr, ð_no, len); 722208538Sraj 723208538Sraj } else if (strcmp(env, "consoledev") == 0) 724208538Sraj fixup_stdout(env); 725208538Sraj } 726208538Sraj 727208538Sraj /* Modify cpu(s) and bus clock frequenties in /cpus node [Hz] */ 728208538Sraj fixup_cpubusfreqs(si->clk_cpu, si->clk_bus); 729208538Sraj 730208538Sraj /* Fixup memory regions */ 731208538Sraj fixup_memory(si); 732208538Sraj 733208538Sraj fdt_setprop(fdtp, chosen, "fixup-applied", NULL, 0); 734247250Skientzle return (1); 735208538Sraj} 736208538Sraj 737243693Sgonzo/* 738247250Skientzle * Copy DTB blob to specified location and return size 739243693Sgonzo */ 740208538Srajint 741243693Sgonzofdt_copy(vm_offset_t va) 742243693Sgonzo{ 743243693Sgonzo int err; 744243693Sgonzo 745243693Sgonzo if (fdtp == NULL) { 746243693Sgonzo err = fdt_setup_fdtp(); 747243693Sgonzo if (err) { 748265065Sian printf("No valid device tree blob found!\n"); 749243693Sgonzo return (0); 750243693Sgonzo } 751243693Sgonzo } 752243693Sgonzo 753243693Sgonzo if (fdt_fixup() == 0) 754243693Sgonzo return (0); 755243693Sgonzo 756247250Skientzle if (fdtp_va != 0) { 757247250Skientzle /* Overwrite the FDT with the fixed version. */ 758247250Skientzle /* XXX Is this really appropriate? */ 759247250Skientzle COPYIN(fdtp, fdtp_va, fdtp_size); 760247250Skientzle } 761243693Sgonzo COPYIN(fdtp, va, fdtp_size); 762243693Sgonzo return (fdtp_size); 763243693Sgonzo} 764243693Sgonzo 765243693Sgonzo 766243693Sgonzo 767243693Sgonzoint 768208538Srajcommand_fdt_internal(int argc, char *argv[]) 769208538Sraj{ 770208538Sraj cmdf_t *cmdh; 771243693Sgonzo int flags; 772208538Sraj char *cmd; 773208538Sraj int i, err; 774208538Sraj 775208538Sraj if (argc < 2) { 776208538Sraj command_errmsg = "usage is 'fdt <command> [<args>]"; 777208538Sraj return (CMD_ERROR); 778208538Sraj } 779208538Sraj 780208538Sraj /* 781208538Sraj * Validate fdt <command>. 782208538Sraj */ 783208538Sraj cmd = strdup(argv[1]); 784208538Sraj i = 0; 785208538Sraj cmdh = NULL; 786208538Sraj while (!(commands[i].name == NULL)) { 787208538Sraj if (strcmp(cmd, commands[i].name) == 0) { 788208538Sraj /* found it */ 789208538Sraj cmdh = commands[i].handler; 790243693Sgonzo flags = commands[i].flags; 791208538Sraj break; 792208538Sraj } 793208538Sraj i++; 794208538Sraj } 795208538Sraj if (cmdh == NULL) { 796208538Sraj command_errmsg = "unknown command"; 797208538Sraj return (CMD_ERROR); 798208538Sraj } 799208538Sraj 800243693Sgonzo if (flags & CMD_REQUIRES_BLOB) { 801243693Sgonzo /* 802243693Sgonzo * Check if uboot env vars were parsed already. If not, do it now. 803243693Sgonzo */ 804243693Sgonzo if (fdt_fixup() == 0) 805243693Sgonzo return (CMD_ERROR); 806243693Sgonzo } 807243693Sgonzo 808208538Sraj /* 809208538Sraj * Call command handler. 810208538Sraj */ 811208538Sraj err = (*cmdh)(argc, argv); 812208538Sraj 813208538Sraj return (err); 814208538Sraj} 815208538Sraj 816208538Srajstatic int 817243693Sgonzofdt_cmd_addr(int argc, char *argv[]) 818243693Sgonzo{ 819247201Skientzle struct preloaded_file *fp; 820247045Skientzle struct fdt_header *hdr; 821247201Skientzle const char *addr; 822247201Skientzle char *cp; 823243693Sgonzo 824247201Skientzle fdt_to_load = NULL; 825247201Skientzle 826243693Sgonzo if (argc > 2) 827243693Sgonzo addr = argv[2]; 828243693Sgonzo else { 829243693Sgonzo sprintf(command_errbuf, "no address specified"); 830243693Sgonzo return (CMD_ERROR); 831243693Sgonzo } 832243693Sgonzo 833247201Skientzle hdr = (struct fdt_header *)strtoul(addr, &cp, 16); 834243693Sgonzo if (cp == addr) { 835243693Sgonzo sprintf(command_errbuf, "Invalid address: %s", addr); 836243693Sgonzo return (CMD_ERROR); 837243693Sgonzo } 838243693Sgonzo 839247201Skientzle while ((fp = file_findfile(NULL, "dtb")) != NULL) { 840247201Skientzle file_discard(fp); 841247201Skientzle } 842243693Sgonzo 843247201Skientzle fdt_to_load = hdr; 844243693Sgonzo return (CMD_OK); 845243693Sgonzo} 846243693Sgonzo 847243693Sgonzostatic int 848208538Srajfdt_cmd_cd(int argc, char *argv[]) 849208538Sraj{ 850208538Sraj char *path; 851208538Sraj char tmp[FDT_CWD_LEN]; 852208538Sraj int len, o; 853208538Sraj 854208538Sraj path = (argc > 2) ? argv[2] : "/"; 855208538Sraj 856208538Sraj if (path[0] == '/') { 857208538Sraj len = strlen(path); 858208538Sraj if (len >= FDT_CWD_LEN) 859208538Sraj goto fail; 860208538Sraj } else { 861208538Sraj /* Handle path specification relative to cwd */ 862208538Sraj len = strlen(cwd) + strlen(path) + 1; 863208538Sraj if (len >= FDT_CWD_LEN) 864208538Sraj goto fail; 865208538Sraj 866208538Sraj strcpy(tmp, cwd); 867208538Sraj strcat(tmp, "/"); 868208538Sraj strcat(tmp, path); 869208538Sraj path = tmp; 870208538Sraj } 871208538Sraj 872208538Sraj o = fdt_path_offset(fdtp, path); 873208538Sraj if (o < 0) { 874208538Sraj sprintf(command_errbuf, "could not find node: '%s'", path); 875208538Sraj return (CMD_ERROR); 876208538Sraj } 877208538Sraj 878208538Sraj strcpy(cwd, path); 879208538Sraj return (CMD_OK); 880208538Sraj 881208538Srajfail: 882208538Sraj sprintf(command_errbuf, "path too long: %d, max allowed: %d", 883208538Sraj len, FDT_CWD_LEN - 1); 884208538Sraj return (CMD_ERROR); 885208538Sraj} 886208538Sraj 887208538Srajstatic int 888208538Srajfdt_cmd_hdr(int argc __unused, char *argv[] __unused) 889208538Sraj{ 890208538Sraj char line[80]; 891208538Sraj int ver; 892208538Sraj 893208538Sraj if (fdtp == NULL) { 894208538Sraj command_errmsg = "no device tree blob pointer?!"; 895208538Sraj return (CMD_ERROR); 896208538Sraj } 897208538Sraj 898208538Sraj ver = fdt_version(fdtp); 899208538Sraj pager_open(); 900208538Sraj sprintf(line, "\nFlattened device tree header (%p):\n", fdtp); 901208538Sraj pager_output(line); 902208538Sraj sprintf(line, " magic = 0x%08x\n", fdt_magic(fdtp)); 903208538Sraj pager_output(line); 904208538Sraj sprintf(line, " size = %d\n", fdt_totalsize(fdtp)); 905208538Sraj pager_output(line); 906208538Sraj sprintf(line, " off_dt_struct = 0x%08x\n", 907208538Sraj fdt_off_dt_struct(fdtp)); 908208538Sraj pager_output(line); 909208538Sraj sprintf(line, " off_dt_strings = 0x%08x\n", 910208538Sraj fdt_off_dt_strings(fdtp)); 911208538Sraj pager_output(line); 912208538Sraj sprintf(line, " off_mem_rsvmap = 0x%08x\n", 913208538Sraj fdt_off_mem_rsvmap(fdtp)); 914208538Sraj pager_output(line); 915208538Sraj sprintf(line, " version = %d\n", ver); 916208538Sraj pager_output(line); 917208538Sraj sprintf(line, " last compatible version = %d\n", 918208538Sraj fdt_last_comp_version(fdtp)); 919208538Sraj pager_output(line); 920208538Sraj if (ver >= 2) { 921208538Sraj sprintf(line, " boot_cpuid = %d\n", 922208538Sraj fdt_boot_cpuid_phys(fdtp)); 923208538Sraj pager_output(line); 924208538Sraj } 925208538Sraj if (ver >= 3) { 926208538Sraj sprintf(line, " size_dt_strings = %d\n", 927208538Sraj fdt_size_dt_strings(fdtp)); 928208538Sraj pager_output(line); 929208538Sraj } 930208538Sraj if (ver >= 17) { 931208538Sraj sprintf(line, " size_dt_struct = %d\n", 932208538Sraj fdt_size_dt_struct(fdtp)); 933208538Sraj pager_output(line); 934208538Sraj } 935208538Sraj pager_close(); 936208538Sraj 937208538Sraj return (CMD_OK); 938208538Sraj} 939208538Sraj 940208538Srajstatic int 941208538Srajfdt_cmd_ls(int argc, char *argv[]) 942208538Sraj{ 943208538Sraj const char *prevname[FDT_MAX_DEPTH] = { NULL }; 944208538Sraj const char *name; 945208538Sraj char *path; 946208538Sraj int i, o, depth, len; 947208538Sraj 948208538Sraj path = (argc > 2) ? argv[2] : NULL; 949208538Sraj if (path == NULL) 950208538Sraj path = cwd; 951208538Sraj 952208538Sraj o = fdt_path_offset(fdtp, path); 953208538Sraj if (o < 0) { 954208538Sraj sprintf(command_errbuf, "could not find node: '%s'", path); 955208538Sraj return (CMD_ERROR); 956208538Sraj } 957208538Sraj 958208538Sraj for (depth = 0; 959208538Sraj (o >= 0) && (depth >= 0); 960208538Sraj o = fdt_next_node(fdtp, o, &depth)) { 961208538Sraj 962208538Sraj name = fdt_get_name(fdtp, o, &len); 963208538Sraj 964208538Sraj if (depth > FDT_MAX_DEPTH) { 965208538Sraj printf("max depth exceeded: %d\n", depth); 966208538Sraj continue; 967208538Sraj } 968208538Sraj 969208538Sraj prevname[depth] = name; 970208538Sraj 971208538Sraj /* Skip root (i = 1) when printing devices */ 972208538Sraj for (i = 1; i <= depth; i++) { 973208538Sraj if (prevname[i] == NULL) 974208538Sraj break; 975208538Sraj 976208538Sraj if (strcmp(cwd, "/") == 0) 977208538Sraj printf("/"); 978208538Sraj printf("%s", prevname[i]); 979208538Sraj } 980208538Sraj printf("\n"); 981208538Sraj } 982208538Sraj 983208538Sraj return (CMD_OK); 984208538Sraj} 985208538Sraj 986208538Srajstatic __inline int 987208538Srajisprint(int c) 988208538Sraj{ 989208538Sraj 990208538Sraj return (c >= ' ' && c <= 0x7e); 991208538Sraj} 992208538Sraj 993208538Srajstatic int 994208538Srajfdt_isprint(const void *data, int len, int *count) 995208538Sraj{ 996208538Sraj const char *d; 997208538Sraj char ch; 998208538Sraj int yesno, i; 999208538Sraj 1000208538Sraj if (len == 0) 1001208538Sraj return (0); 1002208538Sraj 1003208538Sraj d = (const char *)data; 1004208538Sraj if (d[len - 1] != '\0') 1005208538Sraj return (0); 1006208538Sraj 1007208538Sraj *count = 0; 1008208538Sraj yesno = 1; 1009208538Sraj for (i = 0; i < len; i++) { 1010208538Sraj ch = *(d + i); 1011208538Sraj if (isprint(ch) || (ch == '\0' && i > 0)) { 1012208538Sraj /* Count strings */ 1013208538Sraj if (ch == '\0') 1014208538Sraj (*count)++; 1015208538Sraj continue; 1016208538Sraj } 1017208538Sraj 1018208538Sraj yesno = 0; 1019208538Sraj break; 1020208538Sraj } 1021208538Sraj 1022208538Sraj return (yesno); 1023208538Sraj} 1024208538Sraj 1025208538Srajstatic int 1026208538Srajfdt_data_str(const void *data, int len, int count, char **buf) 1027208538Sraj{ 1028233323Sraj char *b, *tmp; 1029208538Sraj const char *d; 1030233323Sraj int buf_len, i, l; 1031208538Sraj 1032208538Sraj /* 1033208538Sraj * Calculate the length for the string and allocate memory. 1034208538Sraj * 1035233323Sraj * Note that 'len' already includes at least one terminator. 1036208538Sraj */ 1037233323Sraj buf_len = len; 1038208538Sraj if (count > 1) { 1039208538Sraj /* 1040208538Sraj * Each token had already a terminator buried in 'len', but we 1041208538Sraj * only need one eventually, don't count space for these. 1042208538Sraj */ 1043233323Sraj buf_len -= count - 1; 1044208538Sraj 1045208538Sraj /* Each consecutive token requires a ", " separator. */ 1046233323Sraj buf_len += count * 2; 1047208538Sraj } 1048208538Sraj 1049233323Sraj /* Add some space for surrounding double quotes. */ 1050233323Sraj buf_len += count * 2; 1051233323Sraj 1052233323Sraj /* Note that string being put in 'tmp' may be as big as 'buf_len'. */ 1053233323Sraj b = (char *)malloc(buf_len); 1054233323Sraj tmp = (char *)malloc(buf_len); 1055208538Sraj if (b == NULL) 1056233323Sraj goto error; 1057233323Sraj 1058233323Sraj if (tmp == NULL) { 1059233323Sraj free(b); 1060233323Sraj goto error; 1061233323Sraj } 1062233323Sraj 1063208538Sraj b[0] = '\0'; 1064208538Sraj 1065208538Sraj /* 1066208538Sraj * Now that we have space, format the string. 1067208538Sraj */ 1068208538Sraj i = 0; 1069208538Sraj do { 1070208538Sraj d = (const char *)data + i; 1071208538Sraj l = strlen(d) + 1; 1072208538Sraj 1073208538Sraj sprintf(tmp, "\"%s\"%s", d, 1074208538Sraj (i + l) < len ? ", " : ""); 1075208538Sraj strcat(b, tmp); 1076208538Sraj 1077208538Sraj i += l; 1078208538Sraj 1079208538Sraj } while (i < len); 1080208538Sraj *buf = b; 1081208538Sraj 1082233323Sraj free(tmp); 1083233323Sraj 1084208538Sraj return (0); 1085233323Srajerror: 1086233323Sraj return (1); 1087208538Sraj} 1088208538Sraj 1089208538Srajstatic int 1090208538Srajfdt_data_cell(const void *data, int len, char **buf) 1091208538Sraj{ 1092233323Sraj char *b, *tmp; 1093208538Sraj const uint32_t *c; 1094208538Sraj int count, i, l; 1095208538Sraj 1096208538Sraj /* Number of cells */ 1097208538Sraj count = len / 4; 1098208538Sraj 1099208538Sraj /* 1100208538Sraj * Calculate the length for the string and allocate memory. 1101208538Sraj */ 1102208538Sraj 1103208538Sraj /* Each byte translates to 2 output characters */ 1104208538Sraj l = len * 2; 1105208538Sraj if (count > 1) { 1106208538Sraj /* Each consecutive cell requires a " " separator. */ 1107208538Sraj l += (count - 1) * 1; 1108208538Sraj } 1109208538Sraj /* Each cell will have a "0x" prefix */ 1110208538Sraj l += count * 2; 1111208538Sraj /* Space for surrounding <> and terminator */ 1112208538Sraj l += 3; 1113208538Sraj 1114208538Sraj b = (char *)malloc(l); 1115233323Sraj tmp = (char *)malloc(l); 1116208538Sraj if (b == NULL) 1117233323Sraj goto error; 1118208538Sraj 1119233323Sraj if (tmp == NULL) { 1120233323Sraj free(b); 1121233323Sraj goto error; 1122233323Sraj } 1123233323Sraj 1124208538Sraj b[0] = '\0'; 1125208538Sraj strcat(b, "<"); 1126208538Sraj 1127208538Sraj for (i = 0; i < len; i += 4) { 1128208538Sraj c = (const uint32_t *)((const uint8_t *)data + i); 1129208538Sraj sprintf(tmp, "0x%08x%s", fdt32_to_cpu(*c), 1130208538Sraj i < (len - 4) ? " " : ""); 1131208538Sraj strcat(b, tmp); 1132208538Sraj } 1133208538Sraj strcat(b, ">"); 1134208538Sraj *buf = b; 1135208538Sraj 1136233323Sraj free(tmp); 1137233323Sraj 1138208538Sraj return (0); 1139233323Srajerror: 1140233323Sraj return (1); 1141208538Sraj} 1142208538Sraj 1143208538Srajstatic int 1144208538Srajfdt_data_bytes(const void *data, int len, char **buf) 1145208538Sraj{ 1146233323Sraj char *b, *tmp; 1147208538Sraj const char *d; 1148208538Sraj int i, l; 1149208538Sraj 1150208538Sraj /* 1151208538Sraj * Calculate the length for the string and allocate memory. 1152208538Sraj */ 1153208538Sraj 1154208538Sraj /* Each byte translates to 2 output characters */ 1155208538Sraj l = len * 2; 1156208538Sraj if (len > 1) 1157208538Sraj /* Each consecutive byte requires a " " separator. */ 1158208538Sraj l += (len - 1) * 1; 1159208538Sraj /* Each byte will have a "0x" prefix */ 1160208538Sraj l += len * 2; 1161208538Sraj /* Space for surrounding [] and terminator. */ 1162208538Sraj l += 3; 1163208538Sraj 1164208538Sraj b = (char *)malloc(l); 1165233323Sraj tmp = (char *)malloc(l); 1166208538Sraj if (b == NULL) 1167233323Sraj goto error; 1168208538Sraj 1169233323Sraj if (tmp == NULL) { 1170233323Sraj free(b); 1171233323Sraj goto error; 1172233323Sraj } 1173233323Sraj 1174208538Sraj b[0] = '\0'; 1175208538Sraj strcat(b, "["); 1176208538Sraj 1177208538Sraj for (i = 0, d = data; i < len; i++) { 1178208538Sraj sprintf(tmp, "0x%02x%s", d[i], i < len - 1 ? " " : ""); 1179208538Sraj strcat(b, tmp); 1180208538Sraj } 1181208538Sraj strcat(b, "]"); 1182208538Sraj *buf = b; 1183208538Sraj 1184233323Sraj free(tmp); 1185233323Sraj 1186208538Sraj return (0); 1187233323Srajerror: 1188233323Sraj return (1); 1189208538Sraj} 1190208538Sraj 1191208538Srajstatic int 1192208538Srajfdt_data_fmt(const void *data, int len, char **buf) 1193208538Sraj{ 1194208538Sraj int count; 1195208538Sraj 1196208538Sraj if (len == 0) { 1197208538Sraj *buf = NULL; 1198208538Sraj return (1); 1199208538Sraj } 1200208538Sraj 1201208538Sraj if (fdt_isprint(data, len, &count)) 1202208538Sraj return (fdt_data_str(data, len, count, buf)); 1203208538Sraj 1204208538Sraj else if ((len % 4) == 0) 1205208538Sraj return (fdt_data_cell(data, len, buf)); 1206208538Sraj 1207208538Sraj else 1208208538Sraj return (fdt_data_bytes(data, len, buf)); 1209208538Sraj} 1210208538Sraj 1211208538Srajstatic int 1212208538Srajfdt_prop(int offset) 1213208538Sraj{ 1214208538Sraj char *line, *buf; 1215208538Sraj const struct fdt_property *prop; 1216208538Sraj const char *name; 1217208538Sraj const void *data; 1218208538Sraj int len, rv; 1219208538Sraj 1220208538Sraj line = NULL; 1221208538Sraj prop = fdt_offset_ptr(fdtp, offset, sizeof(*prop)); 1222208538Sraj if (prop == NULL) 1223208538Sraj return (1); 1224208538Sraj 1225208538Sraj name = fdt_string(fdtp, fdt32_to_cpu(prop->nameoff)); 1226208538Sraj len = fdt32_to_cpu(prop->len); 1227208538Sraj 1228208538Sraj rv = 0; 1229208538Sraj buf = NULL; 1230208538Sraj if (len == 0) { 1231208538Sraj /* Property without value */ 1232208538Sraj line = (char *)malloc(strlen(name) + 2); 1233208538Sraj if (line == NULL) { 1234208538Sraj rv = 2; 1235208538Sraj goto out2; 1236208538Sraj } 1237208538Sraj sprintf(line, "%s\n", name); 1238208538Sraj goto out1; 1239208538Sraj } 1240208538Sraj 1241208538Sraj /* 1242208538Sraj * Process property with value 1243208538Sraj */ 1244208538Sraj data = prop->data; 1245208538Sraj 1246208538Sraj if (fdt_data_fmt(data, len, &buf) != 0) { 1247208538Sraj rv = 3; 1248208538Sraj goto out2; 1249208538Sraj } 1250208538Sraj 1251208538Sraj line = (char *)malloc(strlen(name) + strlen(FDT_PROP_SEP) + 1252208538Sraj strlen(buf) + 2); 1253208538Sraj if (line == NULL) { 1254208538Sraj sprintf(command_errbuf, "could not allocate space for string"); 1255208538Sraj rv = 4; 1256208538Sraj goto out2; 1257208538Sraj } 1258208538Sraj 1259208538Sraj sprintf(line, "%s" FDT_PROP_SEP "%s\n", name, buf); 1260208538Sraj 1261208538Srajout1: 1262208538Sraj pager_open(); 1263208538Sraj pager_output(line); 1264208538Sraj pager_close(); 1265208538Sraj 1266208538Srajout2: 1267208538Sraj if (buf) 1268208538Sraj free(buf); 1269208538Sraj 1270208538Sraj if (line) 1271208538Sraj free(line); 1272208538Sraj 1273208538Sraj return (rv); 1274208538Sraj} 1275208538Sraj 1276208538Srajstatic int 1277208538Srajfdt_modprop(int nodeoff, char *propname, void *value, char mode) 1278208538Sraj{ 1279208538Sraj uint32_t cells[100]; 1280208538Sraj char *buf; 1281208538Sraj int len, rv; 1282208538Sraj const struct fdt_property *p; 1283208538Sraj 1284208538Sraj p = fdt_get_property(fdtp, nodeoff, propname, NULL); 1285208538Sraj 1286208538Sraj if (p != NULL) { 1287208538Sraj if (mode == 1) { 1288208538Sraj /* Adding inexistant value in mode 1 is forbidden */ 1289208538Sraj sprintf(command_errbuf, "property already exists!"); 1290208538Sraj return (CMD_ERROR); 1291208538Sraj } 1292208538Sraj } else if (mode == 0) { 1293208538Sraj sprintf(command_errbuf, "property does not exist!"); 1294208538Sraj return (CMD_ERROR); 1295208538Sraj } 1296208538Sraj len = strlen(value); 1297208538Sraj rv = 0; 1298208538Sraj buf = (char *)value; 1299208538Sraj 1300208538Sraj switch (*buf) { 1301208538Sraj case '&': 1302208538Sraj /* phandles */ 1303208538Sraj break; 1304208538Sraj case '<': 1305208538Sraj /* Data cells */ 1306208538Sraj len = fdt_strtovect(buf, (void *)&cells, 100, 1307208538Sraj sizeof(uint32_t)); 1308208538Sraj 1309208538Sraj rv = fdt_setprop(fdtp, nodeoff, propname, &cells, 1310208538Sraj len * sizeof(uint32_t)); 1311208538Sraj break; 1312208538Sraj case '[': 1313208538Sraj /* Data bytes */ 1314208538Sraj len = fdt_strtovect(buf, (void *)&cells, 100, 1315208538Sraj sizeof(uint8_t)); 1316208538Sraj 1317208538Sraj rv = fdt_setprop(fdtp, nodeoff, propname, &cells, 1318208538Sraj len * sizeof(uint8_t)); 1319208538Sraj break; 1320208538Sraj case '"': 1321208538Sraj default: 1322208538Sraj /* Default -- string */ 1323208538Sraj rv = fdt_setprop_string(fdtp, nodeoff, propname, value); 1324208538Sraj break; 1325208538Sraj } 1326208538Sraj 1327233323Sraj if (rv != 0) { 1328233323Sraj if (rv == -FDT_ERR_NOSPACE) 1329233323Sraj sprintf(command_errbuf, 1330233323Sraj "Device tree blob is too small!\n"); 1331233323Sraj else 1332233323Sraj sprintf(command_errbuf, 1333233323Sraj "Could not add/modify property!\n"); 1334233323Sraj } 1335208538Sraj return (rv); 1336208538Sraj} 1337208538Sraj 1338208538Sraj/* Merge strings from argv into a single string */ 1339208538Srajstatic int 1340208538Srajfdt_merge_strings(int argc, char *argv[], int start, char **buffer) 1341208538Sraj{ 1342208538Sraj char *buf; 1343208538Sraj int i, idx, sz; 1344208538Sraj 1345208538Sraj *buffer = NULL; 1346208538Sraj sz = 0; 1347208538Sraj 1348208538Sraj for (i = start; i < argc; i++) 1349208538Sraj sz += strlen(argv[i]); 1350208538Sraj 1351208538Sraj /* Additional bytes for whitespaces between args */ 1352208538Sraj sz += argc - start; 1353208538Sraj 1354208538Sraj buf = (char *)malloc(sizeof(char) * sz); 1355208538Sraj bzero(buf, sizeof(char) * sz); 1356208538Sraj 1357208538Sraj if (buf == NULL) { 1358208538Sraj sprintf(command_errbuf, "could not allocate space " 1359208538Sraj "for string"); 1360208538Sraj return (1); 1361208538Sraj } 1362208538Sraj 1363208538Sraj idx = 0; 1364208538Sraj for (i = start, idx = 0; i < argc; i++) { 1365208538Sraj strcpy(buf + idx, argv[i]); 1366208538Sraj idx += strlen(argv[i]); 1367208538Sraj buf[idx] = ' '; 1368208538Sraj idx++; 1369208538Sraj } 1370208538Sraj buf[sz - 1] = '\0'; 1371208538Sraj *buffer = buf; 1372208538Sraj return (0); 1373208538Sraj} 1374208538Sraj 1375208538Sraj/* Extract offset and name of node/property from a given path */ 1376208538Srajstatic int 1377208538Srajfdt_extract_nameloc(char **pathp, char **namep, int *nodeoff) 1378208538Sraj{ 1379208538Sraj int o; 1380208538Sraj char *path = *pathp, *name = NULL, *subpath = NULL; 1381208538Sraj 1382208538Sraj subpath = strrchr(path, '/'); 1383208538Sraj if (subpath == NULL) { 1384208538Sraj o = fdt_path_offset(fdtp, cwd); 1385208538Sraj name = path; 1386208538Sraj path = (char *)&cwd; 1387208538Sraj } else { 1388208538Sraj *subpath = '\0'; 1389208538Sraj if (strlen(path) == 0) 1390208538Sraj path = cwd; 1391208538Sraj 1392208538Sraj name = subpath + 1; 1393208538Sraj o = fdt_path_offset(fdtp, path); 1394208538Sraj } 1395208538Sraj 1396208538Sraj if (strlen(name) == 0) { 1397208538Sraj sprintf(command_errbuf, "name not specified"); 1398208538Sraj return (1); 1399208538Sraj } 1400208538Sraj if (o < 0) { 1401208538Sraj sprintf(command_errbuf, "could not find node: '%s'", path); 1402208538Sraj return (1); 1403208538Sraj } 1404208538Sraj *namep = name; 1405208538Sraj *nodeoff = o; 1406208538Sraj *pathp = path; 1407208538Sraj return (0); 1408208538Sraj} 1409208538Sraj 1410208538Srajstatic int 1411208538Srajfdt_cmd_prop(int argc, char *argv[]) 1412208538Sraj{ 1413208538Sraj char *path, *propname, *value; 1414208538Sraj int o, next, depth, rv; 1415208538Sraj uint32_t tag; 1416208538Sraj 1417208538Sraj path = (argc > 2) ? argv[2] : NULL; 1418208538Sraj 1419208538Sraj value = NULL; 1420208538Sraj 1421208538Sraj if (argc > 3) { 1422208538Sraj /* Merge property value strings into one */ 1423208538Sraj if (fdt_merge_strings(argc, argv, 3, &value) != 0) 1424208538Sraj return (CMD_ERROR); 1425208538Sraj } else 1426208538Sraj value = NULL; 1427208538Sraj 1428208538Sraj if (path == NULL) 1429208538Sraj path = cwd; 1430208538Sraj 1431208538Sraj rv = CMD_OK; 1432208538Sraj 1433208538Sraj if (value) { 1434208538Sraj /* If value is specified -- try to modify prop. */ 1435208538Sraj if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1436208538Sraj return (CMD_ERROR); 1437208538Sraj 1438208538Sraj rv = fdt_modprop(o, propname, value, 0); 1439208538Sraj if (rv) 1440208538Sraj return (CMD_ERROR); 1441208538Sraj return (CMD_OK); 1442208538Sraj 1443208538Sraj } 1444208538Sraj /* User wants to display properties */ 1445208538Sraj o = fdt_path_offset(fdtp, path); 1446208538Sraj 1447208538Sraj if (o < 0) { 1448208538Sraj sprintf(command_errbuf, "could not find node: '%s'", path); 1449208538Sraj rv = CMD_ERROR; 1450208538Sraj goto out; 1451208538Sraj } 1452208538Sraj 1453208538Sraj depth = 0; 1454208538Sraj while (depth >= 0) { 1455208538Sraj tag = fdt_next_tag(fdtp, o, &next); 1456208538Sraj switch (tag) { 1457208538Sraj case FDT_NOP: 1458208538Sraj break; 1459208538Sraj case FDT_PROP: 1460208538Sraj if (depth > 1) 1461208538Sraj /* Don't process properties of nested nodes */ 1462208538Sraj break; 1463208538Sraj 1464208538Sraj if (fdt_prop(o) != 0) { 1465208538Sraj sprintf(command_errbuf, "could not process " 1466208538Sraj "property"); 1467208538Sraj rv = CMD_ERROR; 1468208538Sraj goto out; 1469208538Sraj } 1470208538Sraj break; 1471208538Sraj case FDT_BEGIN_NODE: 1472208538Sraj depth++; 1473208538Sraj if (depth > FDT_MAX_DEPTH) { 1474208538Sraj printf("warning: nesting too deep: %d\n", 1475208538Sraj depth); 1476208538Sraj goto out; 1477208538Sraj } 1478208538Sraj break; 1479208538Sraj case FDT_END_NODE: 1480208538Sraj depth--; 1481208538Sraj if (depth == 0) 1482208538Sraj /* 1483208538Sraj * This is the end of our starting node, force 1484208538Sraj * the loop finish. 1485208538Sraj */ 1486208538Sraj depth--; 1487208538Sraj break; 1488208538Sraj } 1489208538Sraj o = next; 1490208538Sraj } 1491208538Srajout: 1492208538Sraj return (rv); 1493208538Sraj} 1494208538Sraj 1495208538Srajstatic int 1496208538Srajfdt_cmd_mkprop(int argc, char *argv[]) 1497208538Sraj{ 1498208538Sraj int o; 1499208538Sraj char *path, *propname, *value; 1500208538Sraj 1501208538Sraj path = (argc > 2) ? argv[2] : NULL; 1502208538Sraj 1503208538Sraj value = NULL; 1504208538Sraj 1505208538Sraj if (argc > 3) { 1506208538Sraj /* Merge property value strings into one */ 1507208538Sraj if (fdt_merge_strings(argc, argv, 3, &value) != 0) 1508208538Sraj return (CMD_ERROR); 1509208538Sraj } else 1510208538Sraj value = NULL; 1511208538Sraj 1512208538Sraj if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1513208538Sraj return (CMD_ERROR); 1514208538Sraj 1515208538Sraj if (fdt_modprop(o, propname, value, 1)) 1516208538Sraj return (CMD_ERROR); 1517208538Sraj 1518208538Sraj return (CMD_OK); 1519208538Sraj} 1520208538Sraj 1521208538Srajstatic int 1522208538Srajfdt_cmd_rm(int argc, char *argv[]) 1523208538Sraj{ 1524208538Sraj int o, rv; 1525208538Sraj char *path = NULL, *propname; 1526208538Sraj 1527208538Sraj if (argc > 2) 1528208538Sraj path = argv[2]; 1529208538Sraj else { 1530208538Sraj sprintf(command_errbuf, "no node/property name specified"); 1531208538Sraj return (CMD_ERROR); 1532208538Sraj } 1533208538Sraj 1534208538Sraj o = fdt_path_offset(fdtp, path); 1535208538Sraj if (o < 0) { 1536208538Sraj /* If node not found -- try to find & delete property */ 1537208538Sraj if (fdt_extract_nameloc(&path, &propname, &o) != 0) 1538208538Sraj return (CMD_ERROR); 1539208538Sraj 1540208538Sraj if ((rv = fdt_delprop(fdtp, o, propname)) != 0) { 1541208538Sraj sprintf(command_errbuf, "could not delete" 1542208538Sraj "%s\n", (rv == -FDT_ERR_NOTFOUND) ? 1543208538Sraj "(property/node does not exist)" : ""); 1544208538Sraj return (CMD_ERROR); 1545208538Sraj 1546208538Sraj } else 1547208538Sraj return (CMD_OK); 1548208538Sraj } 1549208538Sraj /* If node exists -- remove node */ 1550208538Sraj rv = fdt_del_node(fdtp, o); 1551208538Sraj if (rv) { 1552208538Sraj sprintf(command_errbuf, "could not delete node"); 1553208538Sraj return (CMD_ERROR); 1554208538Sraj } 1555208538Sraj return (CMD_OK); 1556208538Sraj} 1557208538Sraj 1558208538Srajstatic int 1559208538Srajfdt_cmd_mknode(int argc, char *argv[]) 1560208538Sraj{ 1561208538Sraj int o, rv; 1562208538Sraj char *path = NULL, *nodename = NULL; 1563208538Sraj 1564208538Sraj if (argc > 2) 1565208538Sraj path = argv[2]; 1566208538Sraj else { 1567208538Sraj sprintf(command_errbuf, "no node name specified"); 1568208538Sraj return (CMD_ERROR); 1569208538Sraj } 1570208538Sraj 1571208538Sraj if (fdt_extract_nameloc(&path, &nodename, &o) != 0) 1572208538Sraj return (CMD_ERROR); 1573208538Sraj 1574208538Sraj rv = fdt_add_subnode(fdtp, o, nodename); 1575208538Sraj 1576208538Sraj if (rv < 0) { 1577233323Sraj if (rv == -FDT_ERR_NOSPACE) 1578233323Sraj sprintf(command_errbuf, 1579233323Sraj "Device tree blob is too small!\n"); 1580233323Sraj else 1581233323Sraj sprintf(command_errbuf, 1582233323Sraj "Could not add node!\n"); 1583208538Sraj return (CMD_ERROR); 1584208538Sraj } 1585208538Sraj return (CMD_OK); 1586208538Sraj} 1587208538Sraj 1588208538Srajstatic int 1589208538Srajfdt_cmd_pwd(int argc, char *argv[]) 1590208538Sraj{ 1591233323Sraj char line[FDT_CWD_LEN]; 1592208538Sraj 1593208538Sraj pager_open(); 1594208538Sraj sprintf(line, "%s\n", cwd); 1595208538Sraj pager_output(line); 1596208538Sraj pager_close(); 1597208538Sraj return (CMD_OK); 1598208538Sraj} 1599208538Sraj 1600208538Srajstatic int 1601243693Sgonzofdt_cmd_mres(int argc, char *argv[]) 1602243693Sgonzo{ 1603243693Sgonzo uint64_t start, size; 1604243693Sgonzo int i, total; 1605243693Sgonzo char line[80]; 1606243693Sgonzo 1607243693Sgonzo pager_open(); 1608243693Sgonzo total = fdt_num_mem_rsv(fdtp); 1609243693Sgonzo if (total > 0) { 1610243693Sgonzo pager_output("Reserved memory regions:\n"); 1611243693Sgonzo for (i = 0; i < total; i++) { 1612243693Sgonzo fdt_get_mem_rsv(fdtp, i, &start, &size); 1613243693Sgonzo sprintf(line, "reg#%d: (start: 0x%jx, size: 0x%jx)\n", 1614243693Sgonzo i, start, size); 1615243693Sgonzo pager_output(line); 1616243693Sgonzo } 1617243693Sgonzo } else 1618243693Sgonzo pager_output("No reserved memory regions\n"); 1619243693Sgonzo pager_close(); 1620243693Sgonzo 1621243693Sgonzo return (CMD_OK); 1622243693Sgonzo} 1623243693Sgonzo 1624243693Sgonzostatic int 1625208538Srajfdt_cmd_nyi(int argc, char *argv[]) 1626208538Sraj{ 1627208538Sraj 1628208538Sraj printf("command not yet implemented\n"); 1629208538Sraj return (CMD_ERROR); 1630208538Sraj} 1631