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 = PART_BOOT; 146 void *fit, *fdt; 147 int blk_num; 148 149 #ifndef CONFIG_ANDROID_AB 150 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 151 part_name = PART_RECOVERY; 152 #endif 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 /* don't remove this failure handle */ 205 run_command("download", 0); 206 hang(); 207 } 208 puts("\n"); 209 #endif 210 return fit; 211 212 fail: 213 free(fdt); 214 return NULL; 215 } 216 217 static int fit_image_fixup_alloc(const void *fit, const char *prop_name, 218 const char *addr_name, enum memblk_id mem) 219 { 220 ulong load, addr; 221 int offset, size = 0; 222 int ret; 223 224 addr = env_get_ulong(addr_name, 16, 0); 225 if (!addr) 226 return -EINVAL; 227 228 ret = fit_image_get_param(fit, prop_name, &load, &offset, &size); 229 if (ret) 230 return (ret == -FDT_ERR_NOTFOUND) ? 0 : ret; 231 232 if (!size) 233 return 0; 234 235 ret = fix_image_set_addr(fit, prop_name, load, addr); 236 if (ret) 237 return ret; 238 239 if (!sysmem_alloc_base(mem, (phys_addr_t)addr, 240 ALIGN(size, RK_BLK_SIZE))) 241 return -ENOMEM; 242 243 return 0; 244 } 245 246 int fit_image_pre_process(const void *fit) 247 { 248 int ret; 249 250 if ((gd->flags & GD_FLG_KDTB_READY) && !gd->fdt_blob_kern) 251 sysmem_free((phys_addr_t)gd->fdt_blob); 252 253 ret = fit_image_fixup_alloc(fit, FIT_FDT_PROP, 254 "fdt_addr_r", MEM_FDT); 255 if (ret < 0) 256 return ret; 257 258 ret = fit_image_fixup_alloc(fit, FIT_KERNEL_PROP, 259 "kernel_addr_r", MEM_KERNEL); 260 if (ret < 0) 261 return ret; 262 263 return fit_image_fixup_alloc(fit, FIT_RAMDISK_PROP, 264 "ramdisk_addr_r", MEM_RAMDISK); 265 } 266 267 int fit_image_fail_process(const void *fit) 268 { 269 ulong raddr, kaddr, faddr; 270 271 raddr = env_get_ulong("ramdisk_addr_r", 16, 0); 272 kaddr = env_get_ulong("kernel_addr_r", 16, 0); 273 faddr = env_get_ulong("fdt_addr_r", 16, 0); 274 275 sysmem_free((phys_addr_t)fit); 276 sysmem_free((phys_addr_t)raddr); 277 sysmem_free((phys_addr_t)kaddr); 278 sysmem_free((phys_addr_t)faddr); 279 280 return 0; 281 } 282 283 static int fit_image_get_subnode(const void *fit, int noffset, const char *name) 284 { 285 int sub_noffset; 286 287 fdt_for_each_subnode(sub_noffset, fit, noffset) { 288 if (!strncmp(fit_get_name(fit, sub_noffset, NULL), 289 name, strlen(name))) 290 return sub_noffset; 291 } 292 293 return -ENOENT; 294 } 295 296 static int fit_image_load_one(const void *fit, struct blk_desc *dev_desc, 297 disk_partition_t *part, char *prop_name, 298 void *data, int check_hash) 299 { 300 u32 blk_num, blk_off; 301 int offset, size; 302 int noffset, ret; 303 char *msg = ""; 304 305 ret = fdt_image_get_offset_size(fit, prop_name, &offset, &size); 306 if (ret) 307 return ret; 308 309 blk_off = (FIT_ALIGN(fdt_totalsize(fit)) + offset) / dev_desc->blksz; 310 blk_num = DIV_ROUND_UP(size, dev_desc->blksz); 311 if (blk_dread(dev_desc, part->start + blk_off, blk_num, data) != blk_num) 312 return -EIO; 313 314 if (check_hash) { 315 int hash_noffset; 316 317 noffset = fit_default_conf_get_node(fit, prop_name); 318 if (noffset < 0) 319 return noffset; 320 321 hash_noffset = fit_image_get_subnode(fit, noffset, 322 FIT_HASH_NODENAME); 323 if (hash_noffset < 0) 324 return hash_noffset; 325 326 printf("%s: ", fdt_get_name(fit, noffset, NULL)); 327 ret = fit_image_check_hash(fit, hash_noffset, data, size, &msg); 328 if (ret) 329 return ret; 330 331 puts("+\n"); 332 } 333 334 return 0; 335 } 336 337 /* Calculate what we really need */ 338 ulong fit_image_get_bootables_size(const void *fit) 339 { 340 ulong off[3] = { 0, 0, 0 }; 341 ulong max_off, load; 342 int offset, size; 343 344 #if 0 345 if (!fit_get_totalsize(fit, &size)) 346 return size; 347 #endif 348 349 if (!fit_image_get_param(fit, FIT_FDT_PROP, &load, &offset, &size)) 350 off[0] = offset + FIT_ALIGN(size); 351 352 if (!fit_image_get_param(fit, FIT_KERNEL_PROP, &load, &offset, &size)) 353 off[1] = offset + FIT_ALIGN(size); 354 355 if (!fit_image_get_param(fit, FIT_RAMDISK_PROP, &load, &offset, &size)) 356 off[2] = offset + FIT_ALIGN(size); 357 358 max_off = max(off[0], off[1]); 359 max_off = max(max_off, off[2]); 360 361 return FIT_ALIGN(fdt_totalsize(fit)) + max_off; 362 } 363 364 void *fit_image_load_bootables(ulong *size) 365 { 366 struct blk_desc *dev_desc; 367 disk_partition_t part; 368 int blk_num; 369 void *fit; 370 371 dev_desc = rockchip_get_bootdev(); 372 if (!dev_desc) 373 return NULL; 374 375 fit = fit_get_blob(dev_desc, &part, false); 376 if (!fit) { 377 FIT_I("No fit blob\n"); 378 return NULL; 379 } 380 381 *size = fit_image_get_bootables_size(fit); 382 if (*size == 0) { 383 FIT_I("No bootable image\n"); 384 return NULL; 385 } 386 387 blk_num = DIV_ROUND_UP(*size, dev_desc->blksz); 388 fit = sysmem_alloc(MEM_FIT, blk_num * dev_desc->blksz); 389 if (!fit) 390 return NULL; 391 392 if (blk_dread(dev_desc, part.start, blk_num, fit) != blk_num) { 393 FIT_I("Failed to load bootable images\n"); 394 return NULL; 395 } 396 397 return fit; 398 } 399 400 static void fit_msg(const void *fit) 401 { 402 FIT_I("%ssigned, %sconf required\n", 403 fit_is_signed(fit, gd_fdt_blob()) ? "" : "no ", 404 fit_sig_require_conf(fit, gd_fdt_blob()) ? "" : "no "); 405 } 406 407 #ifdef CONFIG_ROCKCHIP_RESOURCE_IMAGE 408 ulong fit_image_init_resource(struct blk_desc *dev_desc) 409 { 410 disk_partition_t part; 411 void *fit, *buf; 412 int offset, size; 413 int ret = 0; 414 415 if (!dev_desc) 416 return -ENODEV; 417 418 fit = fit_get_blob(dev_desc, &part, true); 419 if (!fit) 420 return -EAGAIN; 421 422 ret = fdt_image_get_offset_size(fit, FIT_MULTI_PROP, &offset, &size); 423 if (ret) 424 return -EINVAL; 425 426 buf = memalign(ARCH_DMA_MINALIGN, ALIGN(size, dev_desc->blksz)); 427 if (!buf) 428 return -ENOMEM; 429 430 printf("RESC: '%s', blk@0x%08lx\n", part.name, 431 part.start + ((FIT_ALIGN(fdt_totalsize(fit)) + offset) / dev_desc->blksz)); 432 ret = fit_image_load_one(fit, dev_desc, &part, FIT_MULTI_PROP, buf, 1); 433 if (ret) 434 return ret; 435 436 ret = resource_setup_ram_list(dev_desc, buf); 437 if (ret) { 438 FIT_I("Failed to setup resource ram list, ret=%d\n", ret); 439 free(fit); 440 return ret; 441 } 442 443 fit_msg(fit); 444 free(fit); 445 446 return 0; 447 } 448 #else 449 int fit_image_read_dtb(void *fdt_addr) 450 { 451 struct blk_desc *dev_desc; 452 disk_partition_t part; 453 void *fit; 454 455 dev_desc = rockchip_get_bootdev(); 456 if (!dev_desc) { 457 FIT_I("No dev_desc!\n"); 458 return -ENODEV;; 459 } 460 461 fit = fit_get_blob(dev_desc, &part, true); 462 if (!fit) 463 return -EINVAL; 464 465 fit_msg(fit); 466 467 return fit_image_load_one(fit, dev_desc, &part, FIT_FDT_PROP, 468 (void *)fdt_addr, 1); 469 } 470 #endif 471