144d3a306SSimon Glass /* 244d3a306SSimon Glass * Copyright (c) 2013, Google Inc. 344d3a306SSimon Glass * 444d3a306SSimon Glass * (C) Copyright 2008 Semihalf 544d3a306SSimon Glass * 644d3a306SSimon Glass * (C) Copyright 2000-2006 744d3a306SSimon Glass * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 844d3a306SSimon Glass * 944d3a306SSimon Glass * See file CREDITS for list of people who contributed to this 1044d3a306SSimon Glass * project. 1144d3a306SSimon Glass * 1244d3a306SSimon Glass * This program is free software; you can redistribute it and/or 1344d3a306SSimon Glass * modify it under the terms of the GNU General Public License as 1444d3a306SSimon Glass * published by the Free Software Foundation; either version 2 of 1544d3a306SSimon Glass * the License, or (at your option) any later version. 1644d3a306SSimon Glass * 1744d3a306SSimon Glass * This program is distributed in the hope that it will be useful, 1844d3a306SSimon Glass * but WITHOUT ANY WARRANTY; without even the implied warranty of 1944d3a306SSimon Glass * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 2044d3a306SSimon Glass * GNU General Public License for more details. 2144d3a306SSimon Glass * 2244d3a306SSimon Glass * You should have received a copy of the GNU General Public License 2344d3a306SSimon Glass * along with this program; if not, write to the Free Software 2444d3a306SSimon Glass * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 2544d3a306SSimon Glass * MA 02111-1307 USA 2644d3a306SSimon Glass */ 2744d3a306SSimon Glass 2844d3a306SSimon Glass #include <common.h> 2944d3a306SSimon Glass #include <fdt_support.h> 3044d3a306SSimon Glass #include <errno.h> 3144d3a306SSimon Glass #include <image.h> 3244d3a306SSimon Glass #include <libfdt.h> 3344d3a306SSimon Glass #include <asm/io.h> 3444d3a306SSimon Glass 3544d3a306SSimon Glass #ifndef CONFIG_SYS_FDT_PAD 3644d3a306SSimon Glass #define CONFIG_SYS_FDT_PAD 0x3000 3744d3a306SSimon Glass #endif 3844d3a306SSimon Glass 3944d3a306SSimon Glass DECLARE_GLOBAL_DATA_PTR; 4044d3a306SSimon Glass 4144d3a306SSimon Glass static void fdt_error(const char *msg) 4244d3a306SSimon Glass { 4344d3a306SSimon Glass puts("ERROR: "); 4444d3a306SSimon Glass puts(msg); 4544d3a306SSimon Glass puts(" - must RESET the board to recover.\n"); 4644d3a306SSimon Glass } 4744d3a306SSimon Glass 4844d3a306SSimon Glass static const image_header_t *image_get_fdt(ulong fdt_addr) 4944d3a306SSimon Glass { 5044d3a306SSimon Glass const image_header_t *fdt_hdr = map_sysmem(fdt_addr, 0); 5144d3a306SSimon Glass 5244d3a306SSimon Glass image_print_contents(fdt_hdr); 5344d3a306SSimon Glass 5444d3a306SSimon Glass puts(" Verifying Checksum ... "); 5544d3a306SSimon Glass if (!image_check_hcrc(fdt_hdr)) { 5644d3a306SSimon Glass fdt_error("fdt header checksum invalid"); 5744d3a306SSimon Glass return NULL; 5844d3a306SSimon Glass } 5944d3a306SSimon Glass 6044d3a306SSimon Glass if (!image_check_dcrc(fdt_hdr)) { 6144d3a306SSimon Glass fdt_error("fdt checksum invalid"); 6244d3a306SSimon Glass return NULL; 6344d3a306SSimon Glass } 6444d3a306SSimon Glass puts("OK\n"); 6544d3a306SSimon Glass 6644d3a306SSimon Glass if (!image_check_type(fdt_hdr, IH_TYPE_FLATDT)) { 6744d3a306SSimon Glass fdt_error("uImage is not a fdt"); 6844d3a306SSimon Glass return NULL; 6944d3a306SSimon Glass } 7044d3a306SSimon Glass if (image_get_comp(fdt_hdr) != IH_COMP_NONE) { 7144d3a306SSimon Glass fdt_error("uImage is compressed"); 7244d3a306SSimon Glass return NULL; 7344d3a306SSimon Glass } 7444d3a306SSimon Glass if (fdt_check_header((char *)image_get_data(fdt_hdr)) != 0) { 7544d3a306SSimon Glass fdt_error("uImage data is not a fdt"); 7644d3a306SSimon Glass return NULL; 7744d3a306SSimon Glass } 7844d3a306SSimon Glass return fdt_hdr; 7944d3a306SSimon Glass } 8044d3a306SSimon Glass 8144d3a306SSimon Glass /** 8244d3a306SSimon Glass * boot_fdt_add_mem_rsv_regions - Mark the memreserve sections as unusable 8344d3a306SSimon Glass * @lmb: pointer to lmb handle, will be used for memory mgmt 8444d3a306SSimon Glass * @fdt_blob: pointer to fdt blob base address 8544d3a306SSimon Glass * 8644d3a306SSimon Glass * Adds the memreserve regions in the dtb to the lmb block. Adding the 8744d3a306SSimon Glass * memreserve regions prevents u-boot from using them to store the initrd 8844d3a306SSimon Glass * or the fdt blob. 8944d3a306SSimon Glass */ 9044d3a306SSimon Glass void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob) 9144d3a306SSimon Glass { 9244d3a306SSimon Glass uint64_t addr, size; 9344d3a306SSimon Glass int i, total; 9444d3a306SSimon Glass 9544d3a306SSimon Glass if (fdt_check_header(fdt_blob) != 0) 9644d3a306SSimon Glass return; 9744d3a306SSimon Glass 9844d3a306SSimon Glass total = fdt_num_mem_rsv(fdt_blob); 9944d3a306SSimon Glass for (i = 0; i < total; i++) { 10044d3a306SSimon Glass if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0) 10144d3a306SSimon Glass continue; 10244d3a306SSimon Glass printf(" reserving fdt memory region: addr=%llx size=%llx\n", 10344d3a306SSimon Glass (unsigned long long)addr, (unsigned long long)size); 10444d3a306SSimon Glass lmb_reserve(lmb, addr, size); 10544d3a306SSimon Glass } 10644d3a306SSimon Glass } 10744d3a306SSimon Glass 10844d3a306SSimon Glass /** 10944d3a306SSimon Glass * boot_relocate_fdt - relocate flat device tree 11044d3a306SSimon Glass * @lmb: pointer to lmb handle, will be used for memory mgmt 11144d3a306SSimon Glass * @of_flat_tree: pointer to a char* variable, will hold fdt start address 11244d3a306SSimon Glass * @of_size: pointer to a ulong variable, will hold fdt length 11344d3a306SSimon Glass * 11444d3a306SSimon Glass * boot_relocate_fdt() allocates a region of memory within the bootmap and 11544d3a306SSimon Glass * relocates the of_flat_tree into that region, even if the fdt is already in 11644d3a306SSimon Glass * the bootmap. It also expands the size of the fdt by CONFIG_SYS_FDT_PAD 11744d3a306SSimon Glass * bytes. 11844d3a306SSimon Glass * 11944d3a306SSimon Glass * of_flat_tree and of_size are set to final (after relocation) values 12044d3a306SSimon Glass * 12144d3a306SSimon Glass * returns: 12244d3a306SSimon Glass * 0 - success 12344d3a306SSimon Glass * 1 - failure 12444d3a306SSimon Glass */ 12544d3a306SSimon Glass int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size) 12644d3a306SSimon Glass { 12744d3a306SSimon Glass void *fdt_blob = *of_flat_tree; 12844d3a306SSimon Glass void *of_start = NULL; 12944d3a306SSimon Glass char *fdt_high; 13044d3a306SSimon Glass ulong of_len = 0; 13144d3a306SSimon Glass int err; 13244d3a306SSimon Glass int disable_relocation = 0; 13344d3a306SSimon Glass 13444d3a306SSimon Glass /* nothing to do */ 13544d3a306SSimon Glass if (*of_size == 0) 13644d3a306SSimon Glass return 0; 13744d3a306SSimon Glass 13844d3a306SSimon Glass if (fdt_check_header(fdt_blob) != 0) { 13944d3a306SSimon Glass fdt_error("image is not a fdt"); 14044d3a306SSimon Glass goto error; 14144d3a306SSimon Glass } 14244d3a306SSimon Glass 14344d3a306SSimon Glass /* position on a 4K boundary before the alloc_current */ 14444d3a306SSimon Glass /* Pad the FDT by a specified amount */ 14544d3a306SSimon Glass of_len = *of_size + CONFIG_SYS_FDT_PAD; 14644d3a306SSimon Glass 14744d3a306SSimon Glass /* If fdt_high is set use it to select the relocation address */ 14844d3a306SSimon Glass fdt_high = getenv("fdt_high"); 14944d3a306SSimon Glass if (fdt_high) { 15044d3a306SSimon Glass void *desired_addr = (void *)simple_strtoul(fdt_high, NULL, 16); 15144d3a306SSimon Glass 15244d3a306SSimon Glass if (((ulong) desired_addr) == ~0UL) { 15344d3a306SSimon Glass /* All ones means use fdt in place */ 15444d3a306SSimon Glass of_start = fdt_blob; 15544d3a306SSimon Glass lmb_reserve(lmb, (ulong)of_start, of_len); 15644d3a306SSimon Glass disable_relocation = 1; 15744d3a306SSimon Glass } else if (desired_addr) { 15844d3a306SSimon Glass of_start = 15944d3a306SSimon Glass (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000, 16044d3a306SSimon Glass (ulong)desired_addr); 16144d3a306SSimon Glass if (of_start == NULL) { 16244d3a306SSimon Glass puts("Failed using fdt_high value for Device Tree"); 16344d3a306SSimon Glass goto error; 16444d3a306SSimon Glass } 16544d3a306SSimon Glass } else { 16644d3a306SSimon Glass of_start = 16744d3a306SSimon Glass (void *)(ulong) lmb_alloc(lmb, of_len, 0x1000); 16844d3a306SSimon Glass } 16944d3a306SSimon Glass } else { 17044d3a306SSimon Glass of_start = 17144d3a306SSimon Glass (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000, 17244d3a306SSimon Glass getenv_bootm_mapsize() 17344d3a306SSimon Glass + getenv_bootm_low()); 17444d3a306SSimon Glass } 17544d3a306SSimon Glass 17644d3a306SSimon Glass if (of_start == NULL) { 17744d3a306SSimon Glass puts("device tree - allocation error\n"); 17844d3a306SSimon Glass goto error; 17944d3a306SSimon Glass } 18044d3a306SSimon Glass 18144d3a306SSimon Glass if (disable_relocation) { 18244d3a306SSimon Glass /* 18344d3a306SSimon Glass * We assume there is space after the existing fdt to use 18444d3a306SSimon Glass * for padding 18544d3a306SSimon Glass */ 18644d3a306SSimon Glass fdt_set_totalsize(of_start, of_len); 18744d3a306SSimon Glass printf(" Using Device Tree in place at %p, end %p\n", 18844d3a306SSimon Glass of_start, of_start + of_len - 1); 18944d3a306SSimon Glass } else { 19044d3a306SSimon Glass debug("## device tree at %p ... %p (len=%ld [0x%lX])\n", 19144d3a306SSimon Glass fdt_blob, fdt_blob + *of_size - 1, of_len, of_len); 19244d3a306SSimon Glass 19344d3a306SSimon Glass printf(" Loading Device Tree to %p, end %p ... ", 19444d3a306SSimon Glass of_start, of_start + of_len - 1); 19544d3a306SSimon Glass 19644d3a306SSimon Glass err = fdt_open_into(fdt_blob, of_start, of_len); 19744d3a306SSimon Glass if (err != 0) { 19844d3a306SSimon Glass fdt_error("fdt move failed"); 19944d3a306SSimon Glass goto error; 20044d3a306SSimon Glass } 20144d3a306SSimon Glass puts("OK\n"); 20244d3a306SSimon Glass } 20344d3a306SSimon Glass 20444d3a306SSimon Glass *of_flat_tree = of_start; 20544d3a306SSimon Glass *of_size = of_len; 20644d3a306SSimon Glass 20744d3a306SSimon Glass set_working_fdt_addr(*of_flat_tree); 20844d3a306SSimon Glass return 0; 20944d3a306SSimon Glass 21044d3a306SSimon Glass error: 21144d3a306SSimon Glass return 1; 21244d3a306SSimon Glass } 21344d3a306SSimon Glass 21444d3a306SSimon Glass /** 21544d3a306SSimon Glass * boot_get_fdt - main fdt handling routine 21644d3a306SSimon Glass * @argc: command argument count 21744d3a306SSimon Glass * @argv: command argument list 218*53f375faSSimon Glass * @arch: architecture (IH_ARCH_...) 21944d3a306SSimon Glass * @images: pointer to the bootm images structure 22044d3a306SSimon Glass * @of_flat_tree: pointer to a char* variable, will hold fdt start address 22144d3a306SSimon Glass * @of_size: pointer to a ulong variable, will hold fdt length 22244d3a306SSimon Glass * 22344d3a306SSimon Glass * boot_get_fdt() is responsible for finding a valid flat device tree image. 22444d3a306SSimon Glass * Curently supported are the following ramdisk sources: 22544d3a306SSimon Glass * - multicomponent kernel/ramdisk image, 22644d3a306SSimon Glass * - commandline provided address of decicated ramdisk image. 22744d3a306SSimon Glass * 22844d3a306SSimon Glass * returns: 22944d3a306SSimon Glass * 0, if fdt image was found and valid, or skipped 23044d3a306SSimon Glass * of_flat_tree and of_size are set to fdt start address and length if 23144d3a306SSimon Glass * fdt image is found and valid 23244d3a306SSimon Glass * 23344d3a306SSimon Glass * 1, if fdt image is found but corrupted 23444d3a306SSimon Glass * of_flat_tree and of_size are set to 0 if no fdt exists 23544d3a306SSimon Glass */ 236*53f375faSSimon Glass int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch, 23744d3a306SSimon Glass bootm_headers_t *images, char **of_flat_tree, ulong *of_size) 23844d3a306SSimon Glass { 23944d3a306SSimon Glass const image_header_t *fdt_hdr; 24044d3a306SSimon Glass ulong fdt_addr; 24144d3a306SSimon Glass char *fdt_blob = NULL; 24244d3a306SSimon Glass ulong image_start, image_data, image_end; 243*53f375faSSimon Glass ulong load, load_end; 24444d3a306SSimon Glass void *buf; 24544d3a306SSimon Glass #if defined(CONFIG_FIT) 24644d3a306SSimon Glass const char *fit_uname_config = NULL; 24744d3a306SSimon Glass const char *fit_uname_fdt = NULL; 24844d3a306SSimon Glass ulong default_addr; 24944d3a306SSimon Glass int fdt_noffset; 25044d3a306SSimon Glass #endif 25144d3a306SSimon Glass 25244d3a306SSimon Glass *of_flat_tree = NULL; 25344d3a306SSimon Glass *of_size = 0; 25444d3a306SSimon Glass 25544d3a306SSimon Glass if (argc > 3 || genimg_has_config(images)) { 25644d3a306SSimon Glass #if defined(CONFIG_FIT) 25744d3a306SSimon Glass if (argc > 3) { 25844d3a306SSimon Glass /* 25944d3a306SSimon Glass * If the FDT blob comes from the FIT image and the 26044d3a306SSimon Glass * FIT image address is omitted in the command line 26144d3a306SSimon Glass * argument, try to use ramdisk or os FIT image 26244d3a306SSimon Glass * address or default load address. 26344d3a306SSimon Glass */ 26444d3a306SSimon Glass if (images->fit_uname_rd) 26544d3a306SSimon Glass default_addr = (ulong)images->fit_hdr_rd; 26644d3a306SSimon Glass else if (images->fit_uname_os) 26744d3a306SSimon Glass default_addr = (ulong)images->fit_hdr_os; 26844d3a306SSimon Glass else 26944d3a306SSimon Glass default_addr = load_addr; 27044d3a306SSimon Glass 27144d3a306SSimon Glass if (fit_parse_conf(argv[3], default_addr, 27244d3a306SSimon Glass &fdt_addr, &fit_uname_config)) { 27344d3a306SSimon Glass debug("* fdt: config '%s' from image at 0x%08lx\n", 27444d3a306SSimon Glass fit_uname_config, fdt_addr); 27544d3a306SSimon Glass } else if (fit_parse_subimage(argv[3], default_addr, 27644d3a306SSimon Glass &fdt_addr, &fit_uname_fdt)) { 27744d3a306SSimon Glass debug("* fdt: subimage '%s' from image at 0x%08lx\n", 27844d3a306SSimon Glass fit_uname_fdt, fdt_addr); 27944d3a306SSimon Glass } else 28044d3a306SSimon Glass #endif 28144d3a306SSimon Glass { 28244d3a306SSimon Glass fdt_addr = simple_strtoul(argv[3], NULL, 16); 28344d3a306SSimon Glass debug("* fdt: cmdline image address = 0x%08lx\n", 28444d3a306SSimon Glass fdt_addr); 28544d3a306SSimon Glass } 28644d3a306SSimon Glass #if defined(CONFIG_FIT) 28744d3a306SSimon Glass } else { 28844d3a306SSimon Glass /* use FIT configuration provided in first bootm 28944d3a306SSimon Glass * command argument 29044d3a306SSimon Glass */ 29144d3a306SSimon Glass fdt_addr = map_to_sysmem(images->fit_hdr_os); 292*53f375faSSimon Glass fdt_noffset = fit_get_node_from_config(images, 293*53f375faSSimon Glass FIT_FDT_PROP, 294*53f375faSSimon Glass fdt_addr); 295*53f375faSSimon Glass if (fdt_noffset == -ENOLINK) 29644d3a306SSimon Glass return 0; 297*53f375faSSimon Glass else if (fdt_noffset < 0) 298*53f375faSSimon Glass return 1; 29944d3a306SSimon Glass } 30044d3a306SSimon Glass #endif 30144d3a306SSimon Glass debug("## Checking for 'FDT'/'FDT Image' at %08lx\n", 30244d3a306SSimon Glass fdt_addr); 30344d3a306SSimon Glass 30444d3a306SSimon Glass /* copy from dataflash if needed */ 30544d3a306SSimon Glass fdt_addr = genimg_get_image(fdt_addr); 30644d3a306SSimon Glass 30744d3a306SSimon Glass /* 30844d3a306SSimon Glass * Check if there is an FDT image at the 30944d3a306SSimon Glass * address provided in the second bootm argument 31044d3a306SSimon Glass * check image type, for FIT images get a FIT node. 31144d3a306SSimon Glass */ 31244d3a306SSimon Glass buf = map_sysmem(fdt_addr, 0); 31344d3a306SSimon Glass switch (genimg_get_format(buf)) { 31444d3a306SSimon Glass case IMAGE_FORMAT_LEGACY: 31544d3a306SSimon Glass /* verify fdt_addr points to a valid image header */ 31644d3a306SSimon Glass printf("## Flattened Device Tree from Legacy Image at %08lx\n", 31744d3a306SSimon Glass fdt_addr); 31844d3a306SSimon Glass fdt_hdr = image_get_fdt(fdt_addr); 31944d3a306SSimon Glass if (!fdt_hdr) 32044d3a306SSimon Glass goto error; 32144d3a306SSimon Glass 32244d3a306SSimon Glass /* 32344d3a306SSimon Glass * move image data to the load address, 32444d3a306SSimon Glass * make sure we don't overwrite initial image 32544d3a306SSimon Glass */ 32644d3a306SSimon Glass image_start = (ulong)fdt_hdr; 32744d3a306SSimon Glass image_data = (ulong)image_get_data(fdt_hdr); 32844d3a306SSimon Glass image_end = image_get_image_end(fdt_hdr); 32944d3a306SSimon Glass 330*53f375faSSimon Glass load = image_get_load(fdt_hdr); 331*53f375faSSimon Glass load_end = load + image_get_data_size(fdt_hdr); 33244d3a306SSimon Glass 333*53f375faSSimon Glass if (load == image_start || 334*53f375faSSimon Glass load == image_data) { 33544d3a306SSimon Glass fdt_blob = (char *)image_data; 33644d3a306SSimon Glass break; 33744d3a306SSimon Glass } 33844d3a306SSimon Glass 339*53f375faSSimon Glass if ((load < image_end) && (load_end > image_start)) { 34044d3a306SSimon Glass fdt_error("fdt overwritten"); 34144d3a306SSimon Glass goto error; 34244d3a306SSimon Glass } 34344d3a306SSimon Glass 34444d3a306SSimon Glass debug(" Loading FDT from 0x%08lx to 0x%08lx\n", 345*53f375faSSimon Glass image_data, load); 34644d3a306SSimon Glass 347*53f375faSSimon Glass memmove((void *)load, 34844d3a306SSimon Glass (void *)image_data, 34944d3a306SSimon Glass image_get_data_size(fdt_hdr)); 35044d3a306SSimon Glass 351*53f375faSSimon Glass fdt_addr = load; 35244d3a306SSimon Glass break; 35344d3a306SSimon Glass case IMAGE_FORMAT_FIT: 35444d3a306SSimon Glass /* 35544d3a306SSimon Glass * This case will catch both: new uImage format 35644d3a306SSimon Glass * (libfdt based) and raw FDT blob (also libfdt 35744d3a306SSimon Glass * based). 35844d3a306SSimon Glass */ 35944d3a306SSimon Glass #if defined(CONFIG_FIT) 36044d3a306SSimon Glass /* check FDT blob vs FIT blob */ 36144d3a306SSimon Glass if (fit_check_format(buf)) { 362*53f375faSSimon Glass ulong load, len; 36344d3a306SSimon Glass 364*53f375faSSimon Glass fdt_noffset = fit_image_load(images, 365*53f375faSSimon Glass FIT_FDT_PROP, 366*53f375faSSimon Glass fdt_addr, &fit_uname_fdt, 367*53f375faSSimon Glass fit_uname_config, 368*53f375faSSimon Glass arch, IH_TYPE_FLATDT, 369*53f375faSSimon Glass BOOTSTAGE_ID_FIT_FDT_START, 370*53f375faSSimon Glass FIT_LOAD_OPTIONAL, &load, &len); 37144d3a306SSimon Glass 372*53f375faSSimon Glass images->fit_hdr_fdt = map_sysmem(fdt_addr, 0); 37344d3a306SSimon Glass images->fit_uname_fdt = fit_uname_fdt; 37444d3a306SSimon Glass images->fit_noffset_fdt = fdt_noffset; 375*53f375faSSimon Glass fdt_addr = load; 37644d3a306SSimon Glass break; 37744d3a306SSimon Glass } else 37844d3a306SSimon Glass #endif 37944d3a306SSimon Glass { 38044d3a306SSimon Glass /* 38144d3a306SSimon Glass * FDT blob 38244d3a306SSimon Glass */ 38344d3a306SSimon Glass debug("* fdt: raw FDT blob\n"); 38444d3a306SSimon Glass printf("## Flattened Device Tree blob at %08lx\n", 38544d3a306SSimon Glass (long)fdt_addr); 38644d3a306SSimon Glass } 38744d3a306SSimon Glass break; 38844d3a306SSimon Glass default: 38944d3a306SSimon Glass puts("ERROR: Did not find a cmdline Flattened Device Tree\n"); 39044d3a306SSimon Glass goto error; 39144d3a306SSimon Glass } 39244d3a306SSimon Glass 393*53f375faSSimon Glass printf(" Booting using the fdt blob at %#08lx\n", fdt_addr); 394*53f375faSSimon Glass fdt_blob = map_sysmem(fdt_addr, 0); 39544d3a306SSimon Glass } else if (images->legacy_hdr_valid && 39644d3a306SSimon Glass image_check_type(&images->legacy_hdr_os_copy, 39744d3a306SSimon Glass IH_TYPE_MULTI)) { 39844d3a306SSimon Glass ulong fdt_data, fdt_len; 39944d3a306SSimon Glass 40044d3a306SSimon Glass /* 40144d3a306SSimon Glass * Now check if we have a legacy multi-component image, 40244d3a306SSimon Glass * get second entry data start address and len. 40344d3a306SSimon Glass */ 40444d3a306SSimon Glass printf("## Flattened Device Tree from multi component Image at %08lX\n", 40544d3a306SSimon Glass (ulong)images->legacy_hdr_os); 40644d3a306SSimon Glass 40744d3a306SSimon Glass image_multi_getimg(images->legacy_hdr_os, 2, &fdt_data, 40844d3a306SSimon Glass &fdt_len); 40944d3a306SSimon Glass if (fdt_len) { 41044d3a306SSimon Glass fdt_blob = (char *)fdt_data; 41144d3a306SSimon Glass printf(" Booting using the fdt at 0x%p\n", fdt_blob); 41244d3a306SSimon Glass 41344d3a306SSimon Glass if (fdt_check_header(fdt_blob) != 0) { 41444d3a306SSimon Glass fdt_error("image is not a fdt"); 41544d3a306SSimon Glass goto error; 41644d3a306SSimon Glass } 41744d3a306SSimon Glass 41844d3a306SSimon Glass if (fdt_totalsize(fdt_blob) != fdt_len) { 41944d3a306SSimon Glass fdt_error("fdt size != image size"); 42044d3a306SSimon Glass goto error; 42144d3a306SSimon Glass } 42244d3a306SSimon Glass } else { 42344d3a306SSimon Glass debug("## No Flattened Device Tree\n"); 42444d3a306SSimon Glass return 0; 42544d3a306SSimon Glass } 42644d3a306SSimon Glass } else { 42744d3a306SSimon Glass debug("## No Flattened Device Tree\n"); 42844d3a306SSimon Glass return 0; 42944d3a306SSimon Glass } 43044d3a306SSimon Glass 43144d3a306SSimon Glass *of_flat_tree = fdt_blob; 43244d3a306SSimon Glass *of_size = fdt_totalsize(fdt_blob); 43344d3a306SSimon Glass debug(" of_flat_tree at 0x%08lx size 0x%08lx\n", 43444d3a306SSimon Glass (ulong)*of_flat_tree, *of_size); 43544d3a306SSimon Glass 43644d3a306SSimon Glass return 0; 43744d3a306SSimon Glass 43844d3a306SSimon Glass error: 43944d3a306SSimon Glass *of_flat_tree = NULL; 44044d3a306SSimon Glass *of_size = 0; 44144d3a306SSimon Glass return 1; 44244d3a306SSimon Glass } 44313d06981SSimon Glass 44413d06981SSimon Glass /* 44513d06981SSimon Glass * Verify the device tree. 44613d06981SSimon Glass * 44713d06981SSimon Glass * This function is called after all device tree fix-ups have been enacted, 44813d06981SSimon Glass * so that the final device tree can be verified. The definition of "verified" 44913d06981SSimon Glass * is up to the specific implementation. However, it generally means that the 45013d06981SSimon Glass * addresses of some of the devices in the device tree are compared with the 45113d06981SSimon Glass * actual addresses at which U-Boot has placed them. 45213d06981SSimon Glass * 45313d06981SSimon Glass * Returns 1 on success, 0 on failure. If 0 is returned, U-boot will halt the 45413d06981SSimon Glass * boot process. 45513d06981SSimon Glass */ 45613d06981SSimon Glass __weak int ft_verify_fdt(void *fdt) 45713d06981SSimon Glass { 45813d06981SSimon Glass return 1; 45913d06981SSimon Glass } 46013d06981SSimon Glass 46113d06981SSimon Glass __weak int arch_fixup_memory_node(void *blob) 46213d06981SSimon Glass { 46313d06981SSimon Glass return 0; 46413d06981SSimon Glass } 46513d06981SSimon Glass 46613d06981SSimon Glass int image_setup_libfdt(bootm_headers_t *images, void *blob, 46713d06981SSimon Glass int of_size, struct lmb *lmb) 46813d06981SSimon Glass { 46913d06981SSimon Glass ulong *initrd_start = &images->initrd_start; 47013d06981SSimon Glass ulong *initrd_end = &images->initrd_end; 47113d06981SSimon Glass int ret; 47213d06981SSimon Glass 47313d06981SSimon Glass if (fdt_chosen(blob, 1) < 0) { 47413d06981SSimon Glass puts("ERROR: /chosen node create failed"); 47513d06981SSimon Glass puts(" - must RESET the board to recover.\n"); 47613d06981SSimon Glass return -1; 47713d06981SSimon Glass } 47813d06981SSimon Glass arch_fixup_memory_node(blob); 47913d06981SSimon Glass if (IMAAGE_OF_BOARD_SETUP) 48013d06981SSimon Glass ft_board_setup(blob, gd->bd); 48113d06981SSimon Glass fdt_fixup_ethernet(blob); 48213d06981SSimon Glass 48313d06981SSimon Glass /* Delete the old LMB reservation */ 48413d06981SSimon Glass lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob, 48513d06981SSimon Glass (phys_size_t)fdt_totalsize(blob)); 48613d06981SSimon Glass 48713d06981SSimon Glass ret = fdt_resize(blob); 48813d06981SSimon Glass if (ret < 0) 48913d06981SSimon Glass return ret; 49013d06981SSimon Glass of_size = ret; 49113d06981SSimon Glass 49213d06981SSimon Glass if (*initrd_start && *initrd_end) { 49313d06981SSimon Glass of_size += FDT_RAMDISK_OVERHEAD; 49413d06981SSimon Glass fdt_set_totalsize(blob, of_size); 49513d06981SSimon Glass } 49613d06981SSimon Glass /* Create a new LMB reservation */ 49713d06981SSimon Glass lmb_reserve(lmb, (ulong)blob, of_size); 49813d06981SSimon Glass 49913d06981SSimon Glass fdt_initrd(blob, *initrd_start, *initrd_end, 1); 50013d06981SSimon Glass if (!ft_verify_fdt(blob)) 50113d06981SSimon Glass return -1; 50213d06981SSimon Glass 50313d06981SSimon Glass return 0; 50413d06981SSimon Glass } 505