1 /* 2 * (C) Copyright 2019 Rockchip Electronics Co., Ltd 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 #include <common.h> 7 #include <boot_rkimg.h> 8 #include <image.h> 9 #include <malloc.h> 10 #include <sysmem.h> 11 #include <asm/arch/fit.h> 12 #include <asm/arch/resource_img.h> 13 14 DECLARE_GLOBAL_DATA_PTR; 15 16 #define FIT_PLACEHOLDER_ADDR 0xffffff00 17 18 /* 19 * Must use args '-E -p' for mkimage to generate FIT image, 4K as max assumption. 20 */ 21 #define FIT_FDT_MAX_SIZE SZ_4K 22 23 static int fit_is_ext_type(const void *fit) 24 { 25 return fdt_totalsize(fit) < FIT_FDT_MAX_SIZE; 26 } 27 28 static int fit_is_signed(const void *fit, const void *sig_blob) 29 { 30 return fdt_subnode_offset(sig_blob, 0, FIT_SIG_NODENAME) < 0 ? 0 : 1; 31 } 32 33 static inline int fit_image_addr_is_placeholder(ulong addr) 34 { 35 return (addr & 0xffffff00) == FIT_PLACEHOLDER_ADDR; 36 } 37 38 static int fit_sig_require_conf(const void *fit, const void *sig_blob) 39 { 40 const char *required; 41 int sig_node; 42 int noffset; 43 44 sig_node = fdt_subnode_offset(sig_blob, 0, FIT_SIG_NODENAME); 45 if (sig_node < 0) 46 return 0; 47 48 fdt_for_each_subnode(noffset, sig_blob, sig_node) { 49 required = fdt_getprop(sig_blob, noffset, "required", NULL); 50 if (required && !strcmp(required, "conf")) 51 return 1; 52 } 53 54 return 0; 55 } 56 57 int fit_default_conf_get_node(const void *fit, const char *prop_name) 58 { 59 int conf_noffset; 60 61 conf_noffset = fit_conf_get_node(fit, NULL); /* NULL for default conf */ 62 if (conf_noffset < 0) 63 return conf_noffset; 64 65 return fit_conf_get_prop_node(fit, conf_noffset, prop_name); 66 } 67 68 int fix_image_set_addr(const void *fit, const char *prop_name, 69 ulong old, ulong new) 70 { 71 int noffset; 72 73 /* do not fix if verified-boot */ 74 if (!fit_image_addr_is_placeholder(old) || 75 fit_sig_require_conf(fit, gd_fdt_blob())) 76 return 0; 77 78 noffset = fit_default_conf_get_node(fit, prop_name); 79 if (noffset < 0) 80 return noffset; 81 82 /* optional */ 83 fit_image_set_entry(fit, noffset, new); 84 85 return fit_image_set_load(fit, noffset, new); 86 } 87 88 static int fdt_image_get_offset_size(const void *fit, const char *prop_name, 89 int *offset, int *size) 90 { 91 int sz, offs; 92 int noffset; 93 int ret; 94 95 noffset = fit_default_conf_get_node(fit, prop_name); 96 if (noffset < 0) 97 return noffset; 98 99 ret = fit_image_get_data_size(fit, noffset, &sz); 100 if (ret) 101 return ret; 102 103 ret = fit_image_get_data_position(fit, noffset, &offs); 104 if (!ret) 105 offs -= fdt_totalsize(fit); 106 else 107 ret = fit_image_get_data_offset(fit, noffset, &offs); 108 109 *offset = offs; 110 *size = sz; 111 112 return ret; 113 } 114 115 static int fdt_image_get_load(const void *fit, const char *prop_name, 116 ulong *load) 117 { 118 int noffset; 119 120 noffset = fit_default_conf_get_node(fit, prop_name); 121 if (noffset < 0) 122 return noffset; 123 124 return fit_image_get_load(fit, noffset, load); 125 } 126 127 static int fit_image_get_param(const void *fit, const char *prop_name, 128 ulong *load, int *offset, int *size) 129 { 130 int ret; 131 132 ret = fdt_image_get_offset_size(fit, prop_name, offset, size); 133 if (ret < 0) 134 return ret; 135 136 return fdt_image_get_load(fit, prop_name, load); 137 } 138 139 static void *fit_get_blob(struct blk_desc *dev_desc, 140 disk_partition_t *out_part, 141 bool verify) 142 { 143 __maybe_unused int conf_noffset; 144 disk_partition_t part; 145 char *part_name; 146 void *fit, *fdt; 147 int blk_num; 148 149 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 150 part_name = PART_RECOVERY; 151 else 152 part_name = PART_BOOT; 153 154 if (part_get_info_by_name(dev_desc, part_name, &part) < 0) { 155 FIT_I("No %s partition\n", part_name); 156 return NULL; 157 } 158 159 *out_part = part; 160 blk_num = DIV_ROUND_UP(sizeof(struct fdt_header), dev_desc->blksz); 161 fdt = memalign(ARCH_DMA_MINALIGN, blk_num * dev_desc->blksz); 162 if (!fdt) 163 return NULL; 164 165 if (blk_dread(dev_desc, part.start, blk_num, fdt) != blk_num) { 166 debug("Failed to read fdt header\n"); 167 goto fail; 168 } 169 170 if (fdt_check_header(fdt)) { 171 debug("No fdt header\n"); 172 goto fail; 173 } 174 175 if (!fit_is_ext_type(fdt)) { 176 debug("Not external type\n"); 177 goto fail; 178 } 179 180 blk_num = DIV_ROUND_UP(fdt_totalsize(fdt), dev_desc->blksz); 181 fit = memalign(ARCH_DMA_MINALIGN, blk_num * dev_desc->blksz); 182 if (!fit) { 183 debug("No memory\n"); 184 goto fail; 185 } 186 187 if (blk_dread(dev_desc, part.start, blk_num, fit) != blk_num) { 188 free(fit); 189 debug("Failed to read fit blob\n"); 190 goto fail; 191 } 192 193 #ifdef CONFIG_FIT_SIGNATURE 194 if (!verify) 195 return fit; 196 197 conf_noffset = fit_conf_get_node(fit, NULL); /* NULL for default conf */ 198 if (conf_noffset < 0) 199 goto fail; 200 201 printf("%s: ", fdt_get_name(fit, conf_noffset, NULL)); 202 if (fit_config_verify(fit, conf_noffset)) { 203 puts("\n"); 204 run_command("download", 0); 205 hang(); 206 } 207 puts("\n"); 208 #endif 209 return fit; 210 211 fail: 212 free(fdt); 213 return NULL; 214 } 215 216 static int fit_image_fixup_alloc(const void *fit, const char *prop_name, 217 const char *addr_name, enum memblk_id mem) 218 { 219 ulong load, addr; 220 int offset, size = 0; 221 int ret; 222 223 addr = env_get_ulong(addr_name, 16, 0); 224 if (!addr) 225 return -EINVAL; 226 227 ret = fit_image_get_param(fit, prop_name, &load, &offset, &size); 228 if (ret) 229 return (ret == -FDT_ERR_NOTFOUND) ? 0 : ret; 230 231 if (!size) 232 return 0; 233 234 ret = fix_image_set_addr(fit, prop_name, load, addr); 235 if (ret) 236 return ret; 237 238 if (!sysmem_alloc_base(mem, (phys_addr_t)addr, 239 ALIGN(size, RK_BLK_SIZE))) 240 return -ENOMEM; 241 242 return 0; 243 } 244 245 int fit_image_pre_process(const void *fit) 246 { 247 int ret; 248 249 if ((gd->flags & GD_FLG_KDTB_READY) && !gd->fdt_blob_kern) 250 sysmem_free((phys_addr_t)gd->fdt_blob); 251 252 ret = fit_image_fixup_alloc(fit, FIT_FDT_PROP, 253 "fdt_addr_r", MEM_FDT); 254 if (ret < 0) 255 return ret; 256 257 ret = fit_image_fixup_alloc(fit, FIT_KERNEL_PROP, 258 "kernel_addr_r", MEM_KERNEL); 259 if (ret < 0) 260 return ret; 261 262 return fit_image_fixup_alloc(fit, FIT_RAMDISK_PROP, 263 "ramdisk_addr_r", MEM_RAMDISK); 264 } 265 266 int fit_image_fail_process(const void *fit) 267 { 268 ulong raddr, kaddr, faddr; 269 270 raddr = env_get_ulong("ramdisk_addr_r", 16, 0); 271 kaddr = env_get_ulong("kernel_addr_r", 16, 0); 272 faddr = env_get_ulong("fdt_addr_r", 16, 0); 273 274 sysmem_free((phys_addr_t)fit); 275 sysmem_free((phys_addr_t)raddr); 276 sysmem_free((phys_addr_t)kaddr); 277 sysmem_free((phys_addr_t)faddr); 278 279 return 0; 280 } 281 282 static int fit_image_get_subnode(const void *fit, int noffset, const char *name) 283 { 284 int sub_noffset; 285 286 fdt_for_each_subnode(sub_noffset, fit, noffset) { 287 if (!strncmp(fit_get_name(fit, sub_noffset, NULL), 288 name, strlen(name))) 289 return sub_noffset; 290 } 291 292 return -ENOENT; 293 } 294 295 static int fit_image_load_one(const void *fit, struct blk_desc *dev_desc, 296 disk_partition_t *part, char *prop_name, 297 void *data, int check_hash) 298 { 299 u32 blk_num, blk_off; 300 int offset, size; 301 int noffset, ret; 302 char *msg = ""; 303 304 ret = fdt_image_get_offset_size(fit, prop_name, &offset, &size); 305 if (ret) 306 return ret; 307 308 blk_off = (FIT_ALIGN(fdt_totalsize(fit)) + offset) / dev_desc->blksz; 309 blk_num = DIV_ROUND_UP(size, dev_desc->blksz); 310 if (blk_dread(dev_desc, part->start + blk_off, blk_num, data) != blk_num) 311 return -EIO; 312 313 if (check_hash) { 314 int hash_noffset; 315 316 noffset = fit_default_conf_get_node(fit, prop_name); 317 if (noffset < 0) 318 return noffset; 319 320 hash_noffset = fit_image_get_subnode(fit, noffset, 321 FIT_HASH_NODENAME); 322 if (hash_noffset < 0) 323 return hash_noffset; 324 325 printf("%s: ", fdt_get_name(fit, noffset, NULL)); 326 ret = fit_image_check_hash(fit, hash_noffset, data, size, &msg); 327 if (ret) 328 return ret; 329 330 puts("+\n"); 331 } 332 333 return 0; 334 } 335 336 /* Calculate what we really need */ 337 ulong fit_image_get_bootables_size(const void *fit) 338 { 339 ulong off[3] = { 0, 0, 0 }; 340 ulong max_off, load; 341 int offset, size; 342 343 #if 0 344 if (!fit_get_totalsize(fit, &size)) 345 return size; 346 #endif 347 348 if (!fit_image_get_param(fit, FIT_FDT_PROP, &load, &offset, &size)) 349 off[0] = offset + FIT_ALIGN(size); 350 351 if (!fit_image_get_param(fit, FIT_KERNEL_PROP, &load, &offset, &size)) 352 off[1] = offset + FIT_ALIGN(size); 353 354 if (!fit_image_get_param(fit, FIT_RAMDISK_PROP, &load, &offset, &size)) 355 off[2] = offset + FIT_ALIGN(size); 356 357 max_off = max(off[0], off[1]); 358 max_off = max(max_off, off[2]); 359 360 return FIT_ALIGN(fdt_totalsize(fit)) + max_off; 361 } 362 363 void *fit_image_load_bootables(ulong *size) 364 { 365 struct blk_desc *dev_desc; 366 disk_partition_t part; 367 int blk_num; 368 void *fit; 369 370 dev_desc = rockchip_get_bootdev(); 371 if (!dev_desc) 372 return NULL; 373 374 fit = fit_get_blob(dev_desc, &part, false); 375 if (!fit) { 376 FIT_I("No fit blob\n"); 377 return NULL; 378 } 379 380 *size = fit_image_get_bootables_size(fit); 381 if (*size == 0) { 382 FIT_I("No bootable image\n"); 383 return NULL; 384 } 385 386 blk_num = DIV_ROUND_UP(*size, dev_desc->blksz); 387 fit = sysmem_alloc(MEM_FIT, blk_num * dev_desc->blksz); 388 if (!fit) 389 return NULL; 390 391 if (blk_dread(dev_desc, part.start, blk_num, fit) != blk_num) { 392 FIT_I("Failed to load bootable images\n"); 393 return NULL; 394 } 395 396 return fit; 397 } 398 399 static void fit_msg(const void *fit) 400 { 401 FIT_I("%ssigned, %sconf required\n", 402 fit_is_signed(fit, gd_fdt_blob()) ? "" : "no ", 403 fit_sig_require_conf(fit, gd_fdt_blob()) ? "" : "no "); 404 } 405 406 #ifdef CONFIG_ROCKCHIP_RESOURCE_IMAGE 407 static int fit_image_load_resource(const void *fit, struct blk_desc *dev_desc, 408 disk_partition_t *part, ulong *addr) 409 { 410 int offset, size; 411 int ret; 412 void *data; 413 414 ret = fdt_image_get_offset_size(fit, FIT_MULTI_PROP, &offset, &size); 415 if (ret) 416 return ret; 417 418 data = malloc(ALIGN(size, dev_desc->blksz)); 419 if (!data) 420 return -ENOMEM; 421 422 *addr = (ulong)data; 423 424 return fit_image_load_one(fit, dev_desc, part, FIT_MULTI_PROP, 425 data, IS_ENABLED(CONFIG_FIT_SIGNATURE)); 426 } 427 428 int fit_image_init_resource(void) 429 { 430 struct blk_desc *dev_desc; 431 disk_partition_t part; 432 int ret = 0; 433 void *fit; 434 435 dev_desc = rockchip_get_bootdev(); 436 if (!dev_desc) { 437 FIT_I("No dev_desc!\n"); 438 return -ENODEV; 439 } 440 441 fit = fit_get_blob(dev_desc, &part, true); 442 if (!fit) 443 return -EINVAL; 444 445 #ifdef CONFIG_ROCKCHIP_RESOURCE_IMAGE 446 ulong rsce; 447 448 ret = fit_image_load_resource(fit, dev_desc, &part, &rsce); 449 if (ret) { 450 FIT_I("Failed to load resource\n"); 451 free(fit); 452 return ret; 453 } 454 455 ret = resource_create_ram_list(dev_desc, (void *)rsce); 456 if (ret) { 457 FIT_I("Failed to create resource list\n"); 458 free(fit); 459 return ret; 460 } 461 #endif 462 fit_msg(fit); 463 free(fit); 464 465 return ret; 466 } 467 #else 468 int fit_image_read_dtb(void *fdt_addr) 469 { 470 struct blk_desc *dev_desc; 471 disk_partition_t part; 472 void *fit; 473 474 dev_desc = rockchip_get_bootdev(); 475 if (!dev_desc) { 476 FIT_I("No dev_desc!\n"); 477 return -ENODEV;; 478 } 479 480 fit = fit_get_blob(dev_desc, &part, true); 481 if (!fit) 482 return -EINVAL; 483 484 fit_msg(fit); 485 486 return fit_image_load_one(fit, dev_desc, &part, FIT_FDT_PROP, 487 (void *)fdt_addr, 1); 488 } 489 #endif 490