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 /* free for fit_image_fixup_alloc(FIT_FDT_PROP) to re-alloc */ 251 if ((gd->flags & GD_FLG_KDTB_READY) && !gd->fdt_blob_kern) 252 sysmem_free((phys_addr_t)gd->fdt_blob); 253 254 ret = fit_image_fixup_alloc(fit, FIT_FDT_PROP, 255 "fdt_addr_r", MEM_FDT); 256 if (ret < 0) 257 return ret; 258 259 ret = fit_image_fixup_alloc(fit, FIT_KERNEL_PROP, 260 "kernel_addr_r", MEM_KERNEL); 261 if (ret < 0) 262 return ret; 263 264 return fit_image_fixup_alloc(fit, FIT_RAMDISK_PROP, 265 "ramdisk_addr_r", MEM_RAMDISK); 266 } 267 268 int fit_image_fail_process(const void *fit) 269 { 270 ulong raddr, kaddr, faddr; 271 272 raddr = env_get_ulong("ramdisk_addr_r", 16, 0); 273 kaddr = env_get_ulong("kernel_addr_r", 16, 0); 274 faddr = env_get_ulong("fdt_addr_r", 16, 0); 275 276 sysmem_free((phys_addr_t)fit); 277 sysmem_free((phys_addr_t)raddr); 278 sysmem_free((phys_addr_t)kaddr); 279 sysmem_free((phys_addr_t)faddr); 280 281 return 0; 282 } 283 284 static int fit_image_get_subnode(const void *fit, int noffset, const char *name) 285 { 286 int sub_noffset; 287 288 fdt_for_each_subnode(sub_noffset, fit, noffset) { 289 if (!strncmp(fit_get_name(fit, sub_noffset, NULL), 290 name, strlen(name))) 291 return sub_noffset; 292 } 293 294 return -ENOENT; 295 } 296 297 static int fit_image_load_one(const void *fit, struct blk_desc *dev_desc, 298 disk_partition_t *part, char *prop_name, 299 void *data, int check_hash) 300 { 301 u32 blk_num, blk_off; 302 int offset, size; 303 int noffset, ret; 304 char *msg = ""; 305 306 ret = fdt_image_get_offset_size(fit, prop_name, &offset, &size); 307 if (ret) 308 return ret; 309 310 blk_off = (FIT_ALIGN(fdt_totalsize(fit)) + offset) / dev_desc->blksz; 311 blk_num = DIV_ROUND_UP(size, dev_desc->blksz); 312 if (blk_dread(dev_desc, part->start + blk_off, blk_num, data) != blk_num) 313 return -EIO; 314 315 if (check_hash) { 316 int hash_noffset; 317 318 noffset = fit_default_conf_get_node(fit, prop_name); 319 if (noffset < 0) 320 return noffset; 321 322 hash_noffset = fit_image_get_subnode(fit, noffset, 323 FIT_HASH_NODENAME); 324 if (hash_noffset < 0) 325 return hash_noffset; 326 327 printf("%s: ", fdt_get_name(fit, noffset, NULL)); 328 ret = fit_image_check_hash(fit, hash_noffset, data, size, &msg); 329 if (ret) 330 return ret; 331 332 puts("+\n"); 333 } 334 335 return 0; 336 } 337 338 /* Calculate what we really need */ 339 ulong fit_image_get_bootables_size(const void *fit) 340 { 341 ulong off[3] = { 0, 0, 0 }; 342 ulong max_off, load; 343 int offset, size; 344 345 #if 0 346 if (!fit_get_totalsize(fit, &size)) 347 return size; 348 #endif 349 350 if (!fit_image_get_param(fit, FIT_FDT_PROP, &load, &offset, &size)) 351 off[0] = offset + FIT_ALIGN(size); 352 353 if (!fit_image_get_param(fit, FIT_KERNEL_PROP, &load, &offset, &size)) 354 off[1] = offset + FIT_ALIGN(size); 355 356 if (!fit_image_get_param(fit, FIT_RAMDISK_PROP, &load, &offset, &size)) 357 off[2] = offset + FIT_ALIGN(size); 358 359 max_off = max(off[0], off[1]); 360 max_off = max(max_off, off[2]); 361 362 return FIT_ALIGN(fdt_totalsize(fit)) + max_off; 363 } 364 365 void *fit_image_load_bootables(ulong *size) 366 { 367 struct blk_desc *dev_desc; 368 disk_partition_t part; 369 int blk_num; 370 void *fit; 371 372 dev_desc = rockchip_get_bootdev(); 373 if (!dev_desc) 374 return NULL; 375 376 fit = fit_get_blob(dev_desc, &part, false); 377 if (!fit) { 378 FIT_I("No fit blob\n"); 379 return NULL; 380 } 381 382 *size = fit_image_get_bootables_size(fit); 383 if (*size == 0) { 384 FIT_I("No bootable image\n"); 385 return NULL; 386 } 387 388 blk_num = DIV_ROUND_UP(*size, dev_desc->blksz); 389 fit = sysmem_alloc(MEM_FIT, blk_num * dev_desc->blksz); 390 if (!fit) 391 return NULL; 392 393 if (blk_dread(dev_desc, part.start, blk_num, fit) != blk_num) { 394 FIT_I("Failed to load bootable images\n"); 395 return NULL; 396 } 397 398 return fit; 399 } 400 401 static void fit_msg(const void *fit) 402 { 403 FIT_I("%ssigned, %sconf required\n", 404 fit_is_signed(fit, gd_fdt_blob()) ? "" : "no ", 405 fit_sig_require_conf(fit, gd_fdt_blob()) ? "" : "no "); 406 } 407 408 #ifdef CONFIG_ROCKCHIP_RESOURCE_IMAGE 409 ulong fit_image_init_resource(struct blk_desc *dev_desc) 410 { 411 disk_partition_t part; 412 void *fit, *buf; 413 int offset, size; 414 int ret = 0; 415 416 if (!dev_desc) 417 return -ENODEV; 418 419 fit = fit_get_blob(dev_desc, &part, true); 420 if (!fit) 421 return -EAGAIN; 422 423 ret = fdt_image_get_offset_size(fit, FIT_MULTI_PROP, &offset, &size); 424 if (ret) 425 return -EINVAL; 426 427 buf = memalign(ARCH_DMA_MINALIGN, ALIGN(size, dev_desc->blksz)); 428 if (!buf) 429 return -ENOMEM; 430 431 printf("RESC: '%s', blk@0x%08lx\n", part.name, 432 part.start + ((FIT_ALIGN(fdt_totalsize(fit)) + offset) / dev_desc->blksz)); 433 ret = fit_image_load_one(fit, dev_desc, &part, FIT_MULTI_PROP, buf, 1); 434 if (ret) 435 return ret; 436 437 ret = resource_setup_ram_list(dev_desc, buf); 438 if (ret) { 439 FIT_I("Failed to setup resource ram list, ret=%d\n", ret); 440 free(fit); 441 return ret; 442 } 443 444 fit_msg(fit); 445 free(fit); 446 447 return 0; 448 } 449 #else 450 int fit_image_read_dtb(void *fdt_addr) 451 { 452 struct blk_desc *dev_desc; 453 disk_partition_t part; 454 void *fit; 455 456 dev_desc = rockchip_get_bootdev(); 457 if (!dev_desc) { 458 FIT_I("No dev_desc!\n"); 459 return -ENODEV;; 460 } 461 462 fit = fit_get_blob(dev_desc, &part, true); 463 if (!fit) 464 return -EINVAL; 465 466 fit_msg(fit); 467 468 return fit_image_load_one(fit, dev_desc, &part, FIT_FDT_PROP, 469 (void *)fdt_addr, 1); 470 } 471 #endif 472