1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 244d3a306SSimon Glass /* 344d3a306SSimon Glass * Copyright (c) 2013, Google Inc. 444d3a306SSimon Glass * 544d3a306SSimon Glass * (C) Copyright 2008 Semihalf 644d3a306SSimon Glass * 744d3a306SSimon Glass * (C) Copyright 2000-2006 844d3a306SSimon Glass * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 944d3a306SSimon Glass */ 1044d3a306SSimon Glass 1144d3a306SSimon Glass #include <common.h> 1244d3a306SSimon Glass #include <fdt_support.h> 1344d3a306SSimon Glass #include <errno.h> 1444d3a306SSimon Glass #include <image.h> 15b08c8c48SMasahiro Yamada #include <linux/libfdt.h> 160eb25b61SJoe Hershberger #include <mapmem.h> 1744d3a306SSimon Glass #include <asm/io.h> 1844d3a306SSimon Glass 1944d3a306SSimon Glass #ifndef CONFIG_SYS_FDT_PAD 2044d3a306SSimon Glass #define CONFIG_SYS_FDT_PAD 0x3000 2144d3a306SSimon Glass #endif 2244d3a306SSimon Glass 23c960a68eSMasahiro Yamada /* adding a ramdisk needs 0x44 bytes in version 2008.10 */ 24c960a68eSMasahiro Yamada #define FDT_RAMDISK_OVERHEAD 0x80 25c960a68eSMasahiro Yamada 2644d3a306SSimon Glass DECLARE_GLOBAL_DATA_PTR; 2744d3a306SSimon Glass 2844d3a306SSimon Glass static void fdt_error(const char *msg) 2944d3a306SSimon Glass { 3044d3a306SSimon Glass puts("ERROR: "); 3144d3a306SSimon Glass puts(msg); 3244d3a306SSimon Glass puts(" - must RESET the board to recover.\n"); 3344d3a306SSimon Glass } 3444d3a306SSimon Glass 3521d29f7fSHeiko Schocher #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 3644d3a306SSimon Glass static const image_header_t *image_get_fdt(ulong fdt_addr) 3744d3a306SSimon Glass { 3844d3a306SSimon Glass const image_header_t *fdt_hdr = map_sysmem(fdt_addr, 0); 3944d3a306SSimon Glass 4044d3a306SSimon Glass image_print_contents(fdt_hdr); 4144d3a306SSimon Glass 4244d3a306SSimon Glass puts(" Verifying Checksum ... "); 4344d3a306SSimon Glass if (!image_check_hcrc(fdt_hdr)) { 4444d3a306SSimon Glass fdt_error("fdt header checksum invalid"); 4544d3a306SSimon Glass return NULL; 4644d3a306SSimon Glass } 4744d3a306SSimon Glass 4844d3a306SSimon Glass if (!image_check_dcrc(fdt_hdr)) { 4944d3a306SSimon Glass fdt_error("fdt checksum invalid"); 5044d3a306SSimon Glass return NULL; 5144d3a306SSimon Glass } 5244d3a306SSimon Glass puts("OK\n"); 5344d3a306SSimon Glass 5444d3a306SSimon Glass if (!image_check_type(fdt_hdr, IH_TYPE_FLATDT)) { 5544d3a306SSimon Glass fdt_error("uImage is not a fdt"); 5644d3a306SSimon Glass return NULL; 5744d3a306SSimon Glass } 5844d3a306SSimon Glass if (image_get_comp(fdt_hdr) != IH_COMP_NONE) { 5944d3a306SSimon Glass fdt_error("uImage is compressed"); 6044d3a306SSimon Glass return NULL; 6144d3a306SSimon Glass } 622f0877c7SMasahiro Yamada if (fdt_check_header((void *)image_get_data(fdt_hdr)) != 0) { 6344d3a306SSimon Glass fdt_error("uImage data is not a fdt"); 6444d3a306SSimon Glass return NULL; 6544d3a306SSimon Glass } 6644d3a306SSimon Glass return fdt_hdr; 6744d3a306SSimon Glass } 6821d29f7fSHeiko Schocher #endif 6944d3a306SSimon Glass 7044d3a306SSimon Glass /** 7144d3a306SSimon Glass * boot_fdt_add_mem_rsv_regions - Mark the memreserve sections as unusable 7244d3a306SSimon Glass * @lmb: pointer to lmb handle, will be used for memory mgmt 7344d3a306SSimon Glass * @fdt_blob: pointer to fdt blob base address 7444d3a306SSimon Glass * 7544d3a306SSimon Glass * Adds the memreserve regions in the dtb to the lmb block. Adding the 7644d3a306SSimon Glass * memreserve regions prevents u-boot from using them to store the initrd 7744d3a306SSimon Glass * or the fdt blob. 7844d3a306SSimon Glass */ 7944d3a306SSimon Glass void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob) 8044d3a306SSimon Glass { 8144d3a306SSimon Glass uint64_t addr, size; 8244d3a306SSimon Glass int i, total; 8344d3a306SSimon Glass 8444d3a306SSimon Glass if (fdt_check_header(fdt_blob) != 0) 8544d3a306SSimon Glass return; 8644d3a306SSimon Glass 8744d3a306SSimon Glass total = fdt_num_mem_rsv(fdt_blob); 8844d3a306SSimon Glass for (i = 0; i < total; i++) { 8944d3a306SSimon Glass if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0) 9044d3a306SSimon Glass continue; 9144d3a306SSimon Glass printf(" reserving fdt memory region: addr=%llx size=%llx\n", 9244d3a306SSimon Glass (unsigned long long)addr, (unsigned long long)size); 9344d3a306SSimon Glass lmb_reserve(lmb, addr, size); 9444d3a306SSimon Glass } 9544d3a306SSimon Glass } 9644d3a306SSimon Glass 9744d3a306SSimon Glass /** 9844d3a306SSimon Glass * boot_relocate_fdt - relocate flat device tree 9944d3a306SSimon Glass * @lmb: pointer to lmb handle, will be used for memory mgmt 10044d3a306SSimon Glass * @of_flat_tree: pointer to a char* variable, will hold fdt start address 10144d3a306SSimon Glass * @of_size: pointer to a ulong variable, will hold fdt length 10244d3a306SSimon Glass * 10344d3a306SSimon Glass * boot_relocate_fdt() allocates a region of memory within the bootmap and 10444d3a306SSimon Glass * relocates the of_flat_tree into that region, even if the fdt is already in 10544d3a306SSimon Glass * the bootmap. It also expands the size of the fdt by CONFIG_SYS_FDT_PAD 10644d3a306SSimon Glass * bytes. 10744d3a306SSimon Glass * 10844d3a306SSimon Glass * of_flat_tree and of_size are set to final (after relocation) values 10944d3a306SSimon Glass * 11044d3a306SSimon Glass * returns: 11144d3a306SSimon Glass * 0 - success 11244d3a306SSimon Glass * 1 - failure 11344d3a306SSimon Glass */ 11444d3a306SSimon Glass int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size) 11544d3a306SSimon Glass { 11644d3a306SSimon Glass void *fdt_blob = *of_flat_tree; 11744d3a306SSimon Glass void *of_start = NULL; 11844d3a306SSimon Glass char *fdt_high; 11944d3a306SSimon Glass ulong of_len = 0; 12044d3a306SSimon Glass int err; 12144d3a306SSimon Glass int disable_relocation = 0; 12244d3a306SSimon Glass 12344d3a306SSimon Glass /* nothing to do */ 12444d3a306SSimon Glass if (*of_size == 0) 12544d3a306SSimon Glass return 0; 12644d3a306SSimon Glass 12744d3a306SSimon Glass if (fdt_check_header(fdt_blob) != 0) { 12844d3a306SSimon Glass fdt_error("image is not a fdt"); 12944d3a306SSimon Glass goto error; 13044d3a306SSimon Glass } 13144d3a306SSimon Glass 13244d3a306SSimon Glass /* position on a 4K boundary before the alloc_current */ 13344d3a306SSimon Glass /* Pad the FDT by a specified amount */ 13444d3a306SSimon Glass of_len = *of_size + CONFIG_SYS_FDT_PAD; 13544d3a306SSimon Glass 13644d3a306SSimon Glass /* If fdt_high is set use it to select the relocation address */ 13700caae6dSSimon Glass fdt_high = env_get("fdt_high"); 13844d3a306SSimon Glass if (fdt_high) { 13944d3a306SSimon Glass void *desired_addr = (void *)simple_strtoul(fdt_high, NULL, 16); 14044d3a306SSimon Glass 14144d3a306SSimon Glass if (((ulong) desired_addr) == ~0UL) { 14244d3a306SSimon Glass /* All ones means use fdt in place */ 14344d3a306SSimon Glass of_start = fdt_blob; 14444d3a306SSimon Glass lmb_reserve(lmb, (ulong)of_start, of_len); 14544d3a306SSimon Glass disable_relocation = 1; 14644d3a306SSimon Glass } else if (desired_addr) { 14744d3a306SSimon Glass of_start = 14844d3a306SSimon Glass (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000, 14944d3a306SSimon Glass (ulong)desired_addr); 15044d3a306SSimon Glass if (of_start == NULL) { 15144d3a306SSimon Glass puts("Failed using fdt_high value for Device Tree"); 15244d3a306SSimon Glass goto error; 15344d3a306SSimon Glass } 15444d3a306SSimon Glass } else { 15544d3a306SSimon Glass of_start = 15644d3a306SSimon Glass (void *)(ulong) lmb_alloc(lmb, of_len, 0x1000); 15744d3a306SSimon Glass } 15844d3a306SSimon Glass } else { 15944d3a306SSimon Glass of_start = 16044d3a306SSimon Glass (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000, 161723806ccSSimon Glass env_get_bootm_mapsize() 162723806ccSSimon Glass + env_get_bootm_low()); 16344d3a306SSimon Glass } 16444d3a306SSimon Glass 16544d3a306SSimon Glass if (of_start == NULL) { 16644d3a306SSimon Glass puts("device tree - allocation error\n"); 16744d3a306SSimon Glass goto error; 16844d3a306SSimon Glass } 16944d3a306SSimon Glass 17044d3a306SSimon Glass if (disable_relocation) { 17144d3a306SSimon Glass /* 17244d3a306SSimon Glass * We assume there is space after the existing fdt to use 17344d3a306SSimon Glass * for padding 17444d3a306SSimon Glass */ 17544d3a306SSimon Glass fdt_set_totalsize(of_start, of_len); 17644d3a306SSimon Glass printf(" Using Device Tree in place at %p, end %p\n", 17744d3a306SSimon Glass of_start, of_start + of_len - 1); 17844d3a306SSimon Glass } else { 17944d3a306SSimon Glass debug("## device tree at %p ... %p (len=%ld [0x%lX])\n", 18044d3a306SSimon Glass fdt_blob, fdt_blob + *of_size - 1, of_len, of_len); 18144d3a306SSimon Glass 18244d3a306SSimon Glass printf(" Loading Device Tree to %p, end %p ... ", 18344d3a306SSimon Glass of_start, of_start + of_len - 1); 18444d3a306SSimon Glass 18544d3a306SSimon Glass err = fdt_open_into(fdt_blob, of_start, of_len); 18644d3a306SSimon Glass if (err != 0) { 18744d3a306SSimon Glass fdt_error("fdt move failed"); 18844d3a306SSimon Glass goto error; 18944d3a306SSimon Glass } 19044d3a306SSimon Glass puts("OK\n"); 19144d3a306SSimon Glass } 19244d3a306SSimon Glass 19344d3a306SSimon Glass *of_flat_tree = of_start; 19444d3a306SSimon Glass *of_size = of_len; 19544d3a306SSimon Glass 19690fbee3eSJoe Hershberger set_working_fdt_addr((ulong)*of_flat_tree); 19744d3a306SSimon Glass return 0; 19844d3a306SSimon Glass 19944d3a306SSimon Glass error: 20044d3a306SSimon Glass return 1; 20144d3a306SSimon Glass } 20244d3a306SSimon Glass 20344d3a306SSimon Glass /** 20444d3a306SSimon Glass * boot_get_fdt - main fdt handling routine 20544d3a306SSimon Glass * @argc: command argument count 20644d3a306SSimon Glass * @argv: command argument list 20753f375faSSimon Glass * @arch: architecture (IH_ARCH_...) 20844d3a306SSimon Glass * @images: pointer to the bootm images structure 20944d3a306SSimon Glass * @of_flat_tree: pointer to a char* variable, will hold fdt start address 21044d3a306SSimon Glass * @of_size: pointer to a ulong variable, will hold fdt length 21144d3a306SSimon Glass * 21244d3a306SSimon Glass * boot_get_fdt() is responsible for finding a valid flat device tree image. 21344d3a306SSimon Glass * Curently supported are the following ramdisk sources: 21444d3a306SSimon Glass * - multicomponent kernel/ramdisk image, 21544d3a306SSimon Glass * - commandline provided address of decicated ramdisk image. 21644d3a306SSimon Glass * 21744d3a306SSimon Glass * returns: 21844d3a306SSimon Glass * 0, if fdt image was found and valid, or skipped 21944d3a306SSimon Glass * of_flat_tree and of_size are set to fdt start address and length if 22044d3a306SSimon Glass * fdt image is found and valid 22144d3a306SSimon Glass * 22244d3a306SSimon Glass * 1, if fdt image is found but corrupted 22344d3a306SSimon Glass * of_flat_tree and of_size are set to 0 if no fdt exists 22444d3a306SSimon Glass */ 22553f375faSSimon Glass int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch, 22644d3a306SSimon Glass bootm_headers_t *images, char **of_flat_tree, ulong *of_size) 22744d3a306SSimon Glass { 22821d29f7fSHeiko Schocher #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 22944d3a306SSimon Glass const image_header_t *fdt_hdr; 23021d29f7fSHeiko Schocher ulong load, load_end; 23121d29f7fSHeiko Schocher ulong image_start, image_data, image_end; 23221d29f7fSHeiko Schocher #endif 23344d3a306SSimon Glass ulong fdt_addr; 23444d3a306SSimon Glass char *fdt_blob = NULL; 23544d3a306SSimon Glass void *buf; 23673223f0eSSimon Glass #if CONFIG_IS_ENABLED(FIT) 237f320a4d8SSimon Glass const char *fit_uname_config = images->fit_uname_cfg; 23844d3a306SSimon Glass const char *fit_uname_fdt = NULL; 23944d3a306SSimon Glass ulong default_addr; 24044d3a306SSimon Glass int fdt_noffset; 24144d3a306SSimon Glass #endif 242983c72f4SSimon Glass const char *select = NULL; 24348aead71SSuriyan Ramasami int ok_no_fdt = 0; 24444d3a306SSimon Glass 24544d3a306SSimon Glass *of_flat_tree = NULL; 24644d3a306SSimon Glass *of_size = 0; 24744d3a306SSimon Glass 248983c72f4SSimon Glass if (argc > 2) 249983c72f4SSimon Glass select = argv[2]; 250983c72f4SSimon Glass if (select || genimg_has_config(images)) { 25173223f0eSSimon Glass #if CONFIG_IS_ENABLED(FIT) 252983c72f4SSimon Glass if (select) { 25344d3a306SSimon Glass /* 25444d3a306SSimon Glass * If the FDT blob comes from the FIT image and the 25544d3a306SSimon Glass * FIT image address is omitted in the command line 25644d3a306SSimon Glass * argument, try to use ramdisk or os FIT image 25744d3a306SSimon Glass * address or default load address. 25844d3a306SSimon Glass */ 25944d3a306SSimon Glass if (images->fit_uname_rd) 26044d3a306SSimon Glass default_addr = (ulong)images->fit_hdr_rd; 26144d3a306SSimon Glass else if (images->fit_uname_os) 26244d3a306SSimon Glass default_addr = (ulong)images->fit_hdr_os; 26344d3a306SSimon Glass else 26444d3a306SSimon Glass default_addr = load_addr; 26544d3a306SSimon Glass 266983c72f4SSimon Glass if (fit_parse_conf(select, default_addr, 26744d3a306SSimon Glass &fdt_addr, &fit_uname_config)) { 26844d3a306SSimon Glass debug("* fdt: config '%s' from image at 0x%08lx\n", 26944d3a306SSimon Glass fit_uname_config, fdt_addr); 270983c72f4SSimon Glass } else if (fit_parse_subimage(select, default_addr, 27144d3a306SSimon Glass &fdt_addr, &fit_uname_fdt)) { 27244d3a306SSimon Glass debug("* fdt: subimage '%s' from image at 0x%08lx\n", 27344d3a306SSimon Glass fit_uname_fdt, fdt_addr); 27444d3a306SSimon Glass } else 27544d3a306SSimon Glass #endif 27644d3a306SSimon Glass { 277983c72f4SSimon Glass fdt_addr = simple_strtoul(select, NULL, 16); 27844d3a306SSimon Glass debug("* fdt: cmdline image address = 0x%08lx\n", 27944d3a306SSimon Glass fdt_addr); 28044d3a306SSimon Glass } 28173223f0eSSimon Glass #if CONFIG_IS_ENABLED(FIT) 28244d3a306SSimon Glass } else { 28344d3a306SSimon Glass /* use FIT configuration provided in first bootm 28444d3a306SSimon Glass * command argument 28544d3a306SSimon Glass */ 28644d3a306SSimon Glass fdt_addr = map_to_sysmem(images->fit_hdr_os); 28753f375faSSimon Glass fdt_noffset = fit_get_node_from_config(images, 28853f375faSSimon Glass FIT_FDT_PROP, 28953f375faSSimon Glass fdt_addr); 290bd86ef11SPaul Burton if (fdt_noffset == -ENOENT) 29144d3a306SSimon Glass return 0; 29253f375faSSimon Glass else if (fdt_noffset < 0) 29353f375faSSimon Glass return 1; 29444d3a306SSimon Glass } 29544d3a306SSimon Glass #endif 29644d3a306SSimon Glass debug("## Checking for 'FDT'/'FDT Image' at %08lx\n", 29744d3a306SSimon Glass fdt_addr); 29844d3a306SSimon Glass 29944d3a306SSimon Glass /* 30044d3a306SSimon Glass * Check if there is an FDT image at the 30144d3a306SSimon Glass * address provided in the second bootm argument 30244d3a306SSimon Glass * check image type, for FIT images get a FIT node. 30344d3a306SSimon Glass */ 30444d3a306SSimon Glass buf = map_sysmem(fdt_addr, 0); 30544d3a306SSimon Glass switch (genimg_get_format(buf)) { 30621d29f7fSHeiko Schocher #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 30744d3a306SSimon Glass case IMAGE_FORMAT_LEGACY: 30844d3a306SSimon Glass /* verify fdt_addr points to a valid image header */ 30944d3a306SSimon Glass printf("## Flattened Device Tree from Legacy Image at %08lx\n", 31044d3a306SSimon Glass fdt_addr); 31144d3a306SSimon Glass fdt_hdr = image_get_fdt(fdt_addr); 31244d3a306SSimon Glass if (!fdt_hdr) 31348aead71SSuriyan Ramasami goto no_fdt; 31444d3a306SSimon Glass 31544d3a306SSimon Glass /* 31644d3a306SSimon Glass * move image data to the load address, 31744d3a306SSimon Glass * make sure we don't overwrite initial image 31844d3a306SSimon Glass */ 31944d3a306SSimon Glass image_start = (ulong)fdt_hdr; 32044d3a306SSimon Glass image_data = (ulong)image_get_data(fdt_hdr); 32144d3a306SSimon Glass image_end = image_get_image_end(fdt_hdr); 32244d3a306SSimon Glass 32353f375faSSimon Glass load = image_get_load(fdt_hdr); 32453f375faSSimon Glass load_end = load + image_get_data_size(fdt_hdr); 32544d3a306SSimon Glass 32653f375faSSimon Glass if (load == image_start || 32753f375faSSimon Glass load == image_data) { 3282ea47be0SPeng Fan fdt_addr = load; 32944d3a306SSimon Glass break; 33044d3a306SSimon Glass } 33144d3a306SSimon Glass 33253f375faSSimon Glass if ((load < image_end) && (load_end > image_start)) { 33344d3a306SSimon Glass fdt_error("fdt overwritten"); 33444d3a306SSimon Glass goto error; 33544d3a306SSimon Glass } 33644d3a306SSimon Glass 33744d3a306SSimon Glass debug(" Loading FDT from 0x%08lx to 0x%08lx\n", 33853f375faSSimon Glass image_data, load); 33944d3a306SSimon Glass 34053f375faSSimon Glass memmove((void *)load, 34144d3a306SSimon Glass (void *)image_data, 34244d3a306SSimon Glass image_get_data_size(fdt_hdr)); 34344d3a306SSimon Glass 34453f375faSSimon Glass fdt_addr = load; 34544d3a306SSimon Glass break; 34621d29f7fSHeiko Schocher #endif 34744d3a306SSimon Glass case IMAGE_FORMAT_FIT: 34844d3a306SSimon Glass /* 34944d3a306SSimon Glass * This case will catch both: new uImage format 35044d3a306SSimon Glass * (libfdt based) and raw FDT blob (also libfdt 35144d3a306SSimon Glass * based). 35244d3a306SSimon Glass */ 35373223f0eSSimon Glass #if CONFIG_IS_ENABLED(FIT) 35444d3a306SSimon Glass /* check FDT blob vs FIT blob */ 35544d3a306SSimon Glass if (fit_check_format(buf)) { 35653f375faSSimon Glass ulong load, len; 35744d3a306SSimon Glass 358169043d8SPantelis Antoniou fdt_noffset = boot_get_fdt_fit(images, 35953f375faSSimon Glass fdt_addr, &fit_uname_fdt, 360f320a4d8SSimon Glass &fit_uname_config, 361169043d8SPantelis Antoniou arch, &load, &len); 36244d3a306SSimon Glass 36353f375faSSimon Glass images->fit_hdr_fdt = map_sysmem(fdt_addr, 0); 36444d3a306SSimon Glass images->fit_uname_fdt = fit_uname_fdt; 36544d3a306SSimon Glass images->fit_noffset_fdt = fdt_noffset; 36653f375faSSimon Glass fdt_addr = load; 367169043d8SPantelis Antoniou 36844d3a306SSimon Glass break; 36944d3a306SSimon Glass } else 37044d3a306SSimon Glass #endif 37144d3a306SSimon Glass { 37244d3a306SSimon Glass /* 37344d3a306SSimon Glass * FDT blob 37444d3a306SSimon Glass */ 37544d3a306SSimon Glass debug("* fdt: raw FDT blob\n"); 37644d3a306SSimon Glass printf("## Flattened Device Tree blob at %08lx\n", 37744d3a306SSimon Glass (long)fdt_addr); 37844d3a306SSimon Glass } 37944d3a306SSimon Glass break; 38044d3a306SSimon Glass default: 38144d3a306SSimon Glass puts("ERROR: Did not find a cmdline Flattened Device Tree\n"); 38248aead71SSuriyan Ramasami goto no_fdt; 38344d3a306SSimon Glass } 38444d3a306SSimon Glass 38553f375faSSimon Glass printf(" Booting using the fdt blob at %#08lx\n", fdt_addr); 38653f375faSSimon Glass fdt_blob = map_sysmem(fdt_addr, 0); 38744d3a306SSimon Glass } else if (images->legacy_hdr_valid && 38844d3a306SSimon Glass image_check_type(&images->legacy_hdr_os_copy, 38944d3a306SSimon Glass IH_TYPE_MULTI)) { 39044d3a306SSimon Glass ulong fdt_data, fdt_len; 39144d3a306SSimon Glass 39244d3a306SSimon Glass /* 39344d3a306SSimon Glass * Now check if we have a legacy multi-component image, 39444d3a306SSimon Glass * get second entry data start address and len. 39544d3a306SSimon Glass */ 39644d3a306SSimon Glass printf("## Flattened Device Tree from multi component Image at %08lX\n", 39744d3a306SSimon Glass (ulong)images->legacy_hdr_os); 39844d3a306SSimon Glass 39944d3a306SSimon Glass image_multi_getimg(images->legacy_hdr_os, 2, &fdt_data, 40044d3a306SSimon Glass &fdt_len); 40144d3a306SSimon Glass if (fdt_len) { 40244d3a306SSimon Glass fdt_blob = (char *)fdt_data; 40344d3a306SSimon Glass printf(" Booting using the fdt at 0x%p\n", fdt_blob); 40444d3a306SSimon Glass 40544d3a306SSimon Glass if (fdt_check_header(fdt_blob) != 0) { 40644d3a306SSimon Glass fdt_error("image is not a fdt"); 40744d3a306SSimon Glass goto error; 40844d3a306SSimon Glass } 40944d3a306SSimon Glass 41044d3a306SSimon Glass if (fdt_totalsize(fdt_blob) != fdt_len) { 41144d3a306SSimon Glass fdt_error("fdt size != image size"); 41244d3a306SSimon Glass goto error; 41344d3a306SSimon Glass } 41444d3a306SSimon Glass } else { 41544d3a306SSimon Glass debug("## No Flattened Device Tree\n"); 41648aead71SSuriyan Ramasami goto no_fdt; 41744d3a306SSimon Glass } 41844d3a306SSimon Glass } else { 41944d3a306SSimon Glass debug("## No Flattened Device Tree\n"); 42048aead71SSuriyan Ramasami goto no_fdt; 42144d3a306SSimon Glass } 42244d3a306SSimon Glass 42344d3a306SSimon Glass *of_flat_tree = fdt_blob; 42444d3a306SSimon Glass *of_size = fdt_totalsize(fdt_blob); 42544d3a306SSimon Glass debug(" of_flat_tree at 0x%08lx size 0x%08lx\n", 42644d3a306SSimon Glass (ulong)*of_flat_tree, *of_size); 42744d3a306SSimon Glass 42844d3a306SSimon Glass return 0; 42944d3a306SSimon Glass 43048aead71SSuriyan Ramasami no_fdt: 43148aead71SSuriyan Ramasami ok_no_fdt = 1; 43244d3a306SSimon Glass error: 43344d3a306SSimon Glass *of_flat_tree = NULL; 43444d3a306SSimon Glass *of_size = 0; 43548aead71SSuriyan Ramasami if (!select && ok_no_fdt) { 43648aead71SSuriyan Ramasami debug("Continuing to boot without FDT\n"); 43748aead71SSuriyan Ramasami return 0; 43848aead71SSuriyan Ramasami } 43944d3a306SSimon Glass return 1; 44044d3a306SSimon Glass } 44113d06981SSimon Glass 44213d06981SSimon Glass /* 44313d06981SSimon Glass * Verify the device tree. 44413d06981SSimon Glass * 44513d06981SSimon Glass * This function is called after all device tree fix-ups have been enacted, 44613d06981SSimon Glass * so that the final device tree can be verified. The definition of "verified" 44713d06981SSimon Glass * is up to the specific implementation. However, it generally means that the 44813d06981SSimon Glass * addresses of some of the devices in the device tree are compared with the 44913d06981SSimon Glass * actual addresses at which U-Boot has placed them. 45013d06981SSimon Glass * 451a187559eSBin Meng * Returns 1 on success, 0 on failure. If 0 is returned, U-Boot will halt the 45213d06981SSimon Glass * boot process. 45313d06981SSimon Glass */ 45413d06981SSimon Glass __weak int ft_verify_fdt(void *fdt) 45513d06981SSimon Glass { 45613d06981SSimon Glass return 1; 45713d06981SSimon Glass } 45813d06981SSimon Glass 4594280342aSAlexey Brodkin __weak int arch_fixup_fdt(void *blob) 4604280342aSAlexey Brodkin { 4614280342aSAlexey Brodkin return 0; 4624280342aSAlexey Brodkin } 4634280342aSAlexey Brodkin 46413d06981SSimon Glass int image_setup_libfdt(bootm_headers_t *images, void *blob, 46513d06981SSimon Glass int of_size, struct lmb *lmb) 46613d06981SSimon Glass { 46713d06981SSimon Glass ulong *initrd_start = &images->initrd_start; 46813d06981SSimon Glass ulong *initrd_end = &images->initrd_end; 4696f4dbc21SSimon Glass int ret = -EPERM; 4706f4dbc21SSimon Glass int fdt_ret; 47113d06981SSimon Glass 47210be5b5dSPaul Kocialkowski if (fdt_root(blob) < 0) { 47310be5b5dSPaul Kocialkowski printf("ERROR: root node setup failed\n"); 47410be5b5dSPaul Kocialkowski goto err; 47510be5b5dSPaul Kocialkowski } 476bc6ed0f9SMasahiro Yamada if (fdt_chosen(blob) < 0) { 4776f4dbc21SSimon Glass printf("ERROR: /chosen node create failed\n"); 4786f4dbc21SSimon Glass goto err; 47913d06981SSimon Glass } 480e29607edSMa Haijun if (arch_fixup_fdt(blob) < 0) { 4816f4dbc21SSimon Glass printf("ERROR: arch-specific fdt fixup failed\n"); 4826f4dbc21SSimon Glass goto err; 483e29607edSMa Haijun } 48426d61195STom Rini /* Update ethernet nodes */ 48526d61195STom Rini fdt_fixup_ethernet(blob); 4866f4dbc21SSimon Glass if (IMAGE_OF_BOARD_SETUP) { 4876f4dbc21SSimon Glass fdt_ret = ft_board_setup(blob, gd->bd); 4886f4dbc21SSimon Glass if (fdt_ret) { 4896f4dbc21SSimon Glass printf("ERROR: board-specific fdt fixup failed: %s\n", 4906f4dbc21SSimon Glass fdt_strerror(fdt_ret)); 4916f4dbc21SSimon Glass goto err; 4926f4dbc21SSimon Glass } 4936f4dbc21SSimon Glass } 494c654b517SSimon Glass if (IMAGE_OF_SYSTEM_SETUP) { 495d89212b7SMax Krummenacher fdt_ret = ft_system_setup(blob, gd->bd); 496d89212b7SMax Krummenacher if (fdt_ret) { 497c654b517SSimon Glass printf("ERROR: system-specific fdt fixup failed: %s\n", 498c654b517SSimon Glass fdt_strerror(fdt_ret)); 499c654b517SSimon Glass goto err; 500c654b517SSimon Glass } 501c654b517SSimon Glass } 50213d06981SSimon Glass 50313d06981SSimon Glass /* Delete the old LMB reservation */ 504dea2174dSAlexander Graf if (lmb) 50513d06981SSimon Glass lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob, 50613d06981SSimon Glass (phys_size_t)fdt_totalsize(blob)); 50713d06981SSimon Glass 508ef476836SHannes Schmelzer ret = fdt_shrink_to_minimum(blob, 0); 50913d06981SSimon Glass if (ret < 0) 5106f4dbc21SSimon Glass goto err; 51113d06981SSimon Glass of_size = ret; 51213d06981SSimon Glass 51313d06981SSimon Glass if (*initrd_start && *initrd_end) { 51413d06981SSimon Glass of_size += FDT_RAMDISK_OVERHEAD; 51513d06981SSimon Glass fdt_set_totalsize(blob, of_size); 51613d06981SSimon Glass } 51713d06981SSimon Glass /* Create a new LMB reservation */ 518dea2174dSAlexander Graf if (lmb) 51913d06981SSimon Glass lmb_reserve(lmb, (ulong)blob, of_size); 52013d06981SSimon Glass 521dbe963aeSMasahiro Yamada fdt_initrd(blob, *initrd_start, *initrd_end); 52213d06981SSimon Glass if (!ft_verify_fdt(blob)) 5236f4dbc21SSimon Glass goto err; 52413d06981SSimon Glass 5257c387646SKhoronzhuk, Ivan #if defined(CONFIG_SOC_KEYSTONE) 52600c200f1SVitaly Andrianov if (IMAGE_OF_BOARD_SETUP) 52700c200f1SVitaly Andrianov ft_board_setup_ex(blob, gd->bd); 52800c200f1SVitaly Andrianov #endif 52900c200f1SVitaly Andrianov 53013d06981SSimon Glass return 0; 5316f4dbc21SSimon Glass err: 5326f4dbc21SSimon Glass printf(" - must RESET the board to recover.\n\n"); 5336f4dbc21SSimon Glass 5346f4dbc21SSimon Glass return ret; 53513d06981SSimon Glass } 536