/* * Copyright (c) 2013, Google Inc. * * (C) Copyright 2008 Semihalf * * (C) Copyright 2000-2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * SPDX-License-Identifier: GPL-2.0+ */ #ifdef USE_HOSTCC #include "mkimage.h" #include <image.h> #include <time.h> #else #include <common.h> #include <errno.h> #include <asm/io.h> DECLARE_GLOBAL_DATA_PTR; #endif /* !USE_HOSTCC*/ #include <bootstage.h> #include <sha1.h> #include <u-boot/crc.h> #include <u-boot/md5.h> /*****************************************************************************/ /* New uImage format routines */ /*****************************************************************************/ #ifndef USE_HOSTCC static int fit_parse_spec(const char *spec, char sepc, ulong addr_curr, ulong *addr, const char **name) { const char *sep; *addr = addr_curr; *name = NULL; sep = strchr(spec, sepc); if (sep) { if (sep - spec > 0) *addr = simple_strtoul(spec, NULL, 16); *name = sep + 1; return 1; } return 0; } /** * fit_parse_conf - parse FIT configuration spec * @spec: input string, containing configuration spec * @add_curr: current image address (to be used as a possible default) * @addr: pointer to a ulong variable, will hold FIT image address of a given * configuration * @conf_name double pointer to a char, will hold pointer to a configuration * unit name * * fit_parse_conf() expects configuration spec in the form of [<addr>]#<conf>, * where <addr> is a FIT image address that contains configuration * with a <conf> unit name. * * Address part is optional, and if omitted default add_curr will * be used instead. * * returns: * 1 if spec is a valid configuration string, * addr and conf_name are set accordingly * 0 otherwise */ int fit_parse_conf(const char *spec, ulong addr_curr, ulong *addr, const char **conf_name) { return fit_parse_spec(spec, '#', addr_curr, addr, conf_name); } /** * fit_parse_subimage - parse FIT subimage spec * @spec: input string, containing subimage spec * @add_curr: current image address (to be used as a possible default) * @addr: pointer to a ulong variable, will hold FIT image address of a given * subimage * @image_name: double pointer to a char, will hold pointer to a subimage name * * fit_parse_subimage() expects subimage spec in the form of * [<addr>]:<subimage>, where <addr> is a FIT image address that contains * subimage with a <subimg> unit name. * * Address part is optional, and if omitted default add_curr will * be used instead. * * returns: * 1 if spec is a valid subimage string, * addr and image_name are set accordingly * 0 otherwise */ int fit_parse_subimage(const char *spec, ulong addr_curr, ulong *addr, const char **image_name) { return fit_parse_spec(spec, ':', addr_curr, addr, image_name); } #endif /* !USE_HOSTCC */ static void fit_get_debug(const void *fit, int noffset, char *prop_name, int err) { debug("Can't get '%s' property from FIT 0x%08lx, node: offset %d, name %s (%s)\n", prop_name, (ulong)fit, noffset, fit_get_name(fit, noffset, NULL), fdt_strerror(err)); } #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_FIT_SPL_PRINT) /** * fit_print_contents - prints out the contents of the FIT format image * @fit: pointer to the FIT format image header * @p: pointer to prefix string * * fit_print_contents() formats a multi line FIT image contents description. * The routine prints out FIT image properties (root node level) follwed by * the details of each component image. * * returns: * no returned results */ void fit_print_contents(const void *fit) { char *desc; char *uname; int images_noffset; int confs_noffset; int noffset; int ndepth; int count = 0; int ret; const char *p; time_t timestamp; /* Indent string is defined in header image.h */ p = IMAGE_INDENT_STRING; /* Root node properties */ ret = fit_get_desc(fit, 0, &desc); printf("%sFIT description: ", p); if (ret) printf("unavailable\n"); else printf("%s\n", desc); if (IMAGE_ENABLE_TIMESTAMP) { ret = fit_get_timestamp(fit, 0, ×tamp); printf("%sCreated: ", p); if (ret) printf("unavailable\n"); else genimg_print_time(timestamp); } /* Find images parent node offset */ images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH); if (images_noffset < 0) { printf("Can't find images parent node '%s' (%s)\n", FIT_IMAGES_PATH, fdt_strerror(images_noffset)); return; } /* Process its subnodes, print out component images details */ for (ndepth = 0, count = 0, noffset = fdt_next_node(fit, images_noffset, &ndepth); (noffset >= 0) && (ndepth > 0); noffset = fdt_next_node(fit, noffset, &ndepth)) { if (ndepth == 1) { /* * Direct child node of the images parent node, * i.e. component image node. */ printf("%s Image %u (%s)\n", p, count++, fit_get_name(fit, noffset, NULL)); fit_image_print(fit, noffset, p); } } /* Find configurations parent node offset */ confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH); if (confs_noffset < 0) { debug("Can't get configurations parent node '%s' (%s)\n", FIT_CONFS_PATH, fdt_strerror(confs_noffset)); return; } /* get default configuration unit name from default property */ uname = (char *)fdt_getprop(fit, noffset, FIT_DEFAULT_PROP, NULL); if (uname) printf("%s Default Configuration: '%s'\n", p, uname); /* Process its subnodes, print out configurations details */ for (ndepth = 0, count = 0, noffset = fdt_next_node(fit, confs_noffset, &ndepth); (noffset >= 0) && (ndepth > 0); noffset = fdt_next_node(fit, noffset, &ndepth)) { if (ndepth == 1) { /* * Direct child node of the configurations parent node, * i.e. configuration node. */ printf("%s Configuration %u (%s)\n", p, count++, fit_get_name(fit, noffset, NULL)); fit_conf_print(fit, noffset, p); } } } /** * fit_image_print_data() - prints out the hash node details * @fit: pointer to the FIT format image header * @noffset: offset of the hash node * @p: pointer to prefix string * @type: Type of information to print ("hash" or "sign") * * fit_image_print_data() lists properies for the processed hash node * * This function avoid using puts() since it prints a newline on the host * but does not in U-Boot. * * returns: * no returned results */ static void fit_image_print_data(const void *fit, int noffset, const char *p, const char *type) { const char *keyname; uint8_t *value; int value_len; char *algo; int required; int ret, i; debug("%s %s node: '%s'\n", p, type, fit_get_name(fit, noffset, NULL)); printf("%s %s algo: ", p, type); if (fit_image_hash_get_algo(fit, noffset, &algo)) { printf("invalid/unsupported\n"); return; } printf("%s", algo); keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL); required = fdt_getprop(fit, noffset, "required", NULL) != NULL; if (keyname) printf(":%s", keyname); if (required) printf(" (required)"); printf("\n"); ret = fit_image_hash_get_value(fit, noffset, &value, &value_len); printf("%s %s value: ", p, type); if (ret) { printf("unavailable\n"); } else { for (i = 0; i < value_len; i++) printf("%02x", value[i]); printf("\n"); } debug("%s %s len: %d\n", p, type, value_len); /* Signatures have a time stamp */ if (IMAGE_ENABLE_TIMESTAMP && keyname) { time_t timestamp; printf("%s Timestamp: ", p); if (fit_get_timestamp(fit, noffset, ×tamp)) printf("unavailable\n"); else genimg_print_time(timestamp); } } /** * fit_image_print_verification_data() - prints out the hash/signature details * @fit: pointer to the FIT format image header * @noffset: offset of the hash or signature node * @p: pointer to prefix string * * This lists properies for the processed hash node * * returns: * no returned results */ static void fit_image_print_verification_data(const void *fit, int noffset, const char *p) { const char *name; /* * Check subnode name, must be equal to "hash" or "signature". * Multiple hash/signature nodes require unique unit node * names, e.g. hash@1, hash@2, signature@1, signature@2, etc. */ name = fit_get_name(fit, noffset, NULL); if (!strncmp(name, FIT_HASH_NODENAME, strlen(FIT_HASH_NODENAME))) { fit_image_print_data(fit, noffset, p, "Hash"); } else if (!strncmp(name, FIT_SIG_NODENAME, strlen(FIT_SIG_NODENAME))) { fit_image_print_data(fit, noffset, p, "Sign"); } } /** * fit_image_print - prints out the FIT component image details * @fit: pointer to the FIT format image header * @image_noffset: offset of the component image node * @p: pointer to prefix string * * fit_image_print() lists all mandatory properies for the processed component * image. If present, hash nodes are printed out as well. Load * address for images of type firmware is also printed out. Since the load * address is not mandatory for firmware images, it will be output as * "unavailable" when not present. * * returns: * no returned results */ void fit_image_print(const void *fit, int image_noffset, const char *p) { char *desc; uint8_t type, arch, os, comp; size_t size; ulong load, entry; const void *data; int noffset; int ndepth; int ret; /* Mandatory properties */ ret = fit_get_desc(fit, image_noffset, &desc); printf("%s Description: ", p); if (ret) printf("unavailable\n"); else printf("%s\n", desc); if (IMAGE_ENABLE_TIMESTAMP) { time_t timestamp; ret = fit_get_timestamp(fit, 0, ×tamp); printf("%s Created: ", p); if (ret) printf("unavailable\n"); else genimg_print_time(timestamp); } fit_image_get_type(fit, image_noffset, &type); printf("%s Type: %s\n", p, genimg_get_type_name(type)); fit_image_get_comp(fit, image_noffset, &comp); printf("%s Compression: %s\n", p, genimg_get_comp_name(comp)); ret = fit_image_get_data(fit, image_noffset, &data, &size); #ifndef USE_HOSTCC printf("%s Data Start: ", p); if (ret) { printf("unavailable\n"); } else { void *vdata = (void *)data; printf("0x%08lx\n", (ulong)map_to_sysmem(vdata)); } #endif printf("%s Data Size: ", p); if (ret) printf("unavailable\n"); else genimg_print_size(size); /* Remaining, type dependent properties */ if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_STANDALONE) || (type == IH_TYPE_RAMDISK) || (type == IH_TYPE_FIRMWARE) || (type == IH_TYPE_FLATDT)) { fit_image_get_arch(fit, image_noffset, &arch); printf("%s Architecture: %s\n", p, genimg_get_arch_name(arch)); } if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_RAMDISK)) { fit_image_get_os(fit, image_noffset, &os); printf("%s OS: %s\n", p, genimg_get_os_name(os)); } if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_STANDALONE) || (type == IH_TYPE_FIRMWARE) || (type == IH_TYPE_RAMDISK)) { ret = fit_image_get_load(fit, image_noffset, &load); printf("%s Load Address: ", p); if (ret) printf("unavailable\n"); else printf("0x%08lx\n", load); } if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_STANDALONE) || (type == IH_TYPE_RAMDISK)) { fit_image_get_entry(fit, image_noffset, &entry); printf("%s Entry Point: ", p); if (ret) printf("unavailable\n"); else printf("0x%08lx\n", entry); } /* Process all hash subnodes of the component image node */ for (ndepth = 0, noffset = fdt_next_node(fit, image_noffset, &ndepth); (noffset >= 0) && (ndepth > 0); noffset = fdt_next_node(fit, noffset, &ndepth)) { if (ndepth == 1) { /* Direct child node of the component image node */ fit_image_print_verification_data(fit, noffset, p); } } } #endif /** * fit_get_desc - get node description property * @fit: pointer to the FIT format image header * @noffset: node offset * @desc: double pointer to the char, will hold pointer to the descrption * * fit_get_desc() reads description property from a given node, if * description is found pointer to it is returened in third call argument. * * returns: * 0, on success * -1, on failure */ int fit_get_desc(const void *fit, int noffset, char **desc) { int len; *desc = (char *)fdt_getprop(fit, noffset, FIT_DESC_PROP, &len); if (*desc == NULL) { fit_get_debug(fit, noffset, FIT_DESC_PROP, len); return -1; } return 0; } /** * fit_get_timestamp - get node timestamp property * @fit: pointer to the FIT format image header * @noffset: node offset * @timestamp: pointer to the time_t, will hold read timestamp * * fit_get_timestamp() reads timestamp poperty from given node, if timestamp * is found and has a correct size its value is retured in third call * argument. * * returns: * 0, on success * -1, on property read failure * -2, on wrong timestamp size */ int fit_get_timestamp(const void *fit, int noffset, time_t *timestamp) { int len; const void *data; data = fdt_getprop(fit, noffset, FIT_TIMESTAMP_PROP, &len); if (data == NULL) { fit_get_debug(fit, noffset, FIT_TIMESTAMP_PROP, len); return -1; } if (len != sizeof(uint32_t)) { debug("FIT timestamp with incorrect size of (%u)\n", len); return -2; } *timestamp = uimage_to_cpu(*((uint32_t *)data)); return 0; } /** * fit_image_get_node - get node offset for component image of a given unit name * @fit: pointer to the FIT format image header * @image_uname: component image node unit name * * fit_image_get_node() finds a component image (withing the '/images' * node) of a provided unit name. If image is found its node offset is * returned to the caller. * * returns: * image node offset when found (>=0) * negative number on failure (FDT_ERR_* code) */ int fit_image_get_node(const void *fit, const char *image_uname) { int noffset, images_noffset; images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH); if (images_noffset < 0) { debug("Can't find images parent node '%s' (%s)\n", FIT_IMAGES_PATH, fdt_strerror(images_noffset)); return images_noffset; } noffset = fdt_subnode_offset(fit, images_noffset, image_uname); if (noffset < 0) { debug("Can't get node offset for image unit name: '%s' (%s)\n", image_uname, fdt_strerror(noffset)); } return noffset; } /** * fit_image_get_os - get os id for a given component image node * @fit: pointer to the FIT format image header * @noffset: component image node offset * @os: pointer to the uint8_t, will hold os numeric id * * fit_image_get_os() finds os property in a given component image node. * If the property is found, its (string) value is translated to the numeric * id which is returned to the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_get_os(const void *fit, int noffset, uint8_t *os) { int len; const void *data; /* Get OS name from property data */ data = fdt_getprop(fit, noffset, FIT_OS_PROP, &len); if (data == NULL) { fit_get_debug(fit, noffset, FIT_OS_PROP, len); *os = -1; return -1; } /* Translate OS name to id */ *os = genimg_get_os_id(data); return 0; } /** * fit_image_get_arch - get arch id for a given component image node * @fit: pointer to the FIT format image header * @noffset: component image node offset * @arch: pointer to the uint8_t, will hold arch numeric id * * fit_image_get_arch() finds arch property in a given component image node. * If the property is found, its (string) value is translated to the numeric * id which is returned to the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_get_arch(const void *fit, int noffset, uint8_t *arch) { int len; const void *data; /* Get architecture name from property data */ data = fdt_getprop(fit, noffset, FIT_ARCH_PROP, &len); if (data == NULL) { fit_get_debug(fit, noffset, FIT_ARCH_PROP, len); *arch = -1; return -1; } /* Translate architecture name to id */ *arch = genimg_get_arch_id(data); return 0; } /** * fit_image_get_type - get type id for a given component image node * @fit: pointer to the FIT format image header * @noffset: component image node offset * @type: pointer to the uint8_t, will hold type numeric id * * fit_image_get_type() finds type property in a given component image node. * If the property is found, its (string) value is translated to the numeric * id which is returned to the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_get_type(const void *fit, int noffset, uint8_t *type) { int len; const void *data; /* Get image type name from property data */ data = fdt_getprop(fit, noffset, FIT_TYPE_PROP, &len); if (data == NULL) { fit_get_debug(fit, noffset, FIT_TYPE_PROP, len); *type = -1; return -1; } /* Translate image type name to id */ *type = genimg_get_type_id(data); return 0; } /** * fit_image_get_comp - get comp id for a given component image node * @fit: pointer to the FIT format image header * @noffset: component image node offset * @comp: pointer to the uint8_t, will hold comp numeric id * * fit_image_get_comp() finds comp property in a given component image node. * If the property is found, its (string) value is translated to the numeric * id which is returned to the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_get_comp(const void *fit, int noffset, uint8_t *comp) { int len; const void *data; /* Get compression name from property data */ data = fdt_getprop(fit, noffset, FIT_COMP_PROP, &len); if (data == NULL) { fit_get_debug(fit, noffset, FIT_COMP_PROP, len); *comp = -1; return -1; } /* Translate compression name to id */ *comp = genimg_get_comp_id(data); return 0; } /** * fit_image_get_load() - get load addr property for given component image node * @fit: pointer to the FIT format image header * @noffset: component image node offset * @load: pointer to the uint32_t, will hold load address * * fit_image_get_load() finds load address property in a given component * image node. If the property is found, its value is returned to the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_get_load(const void *fit, int noffset, ulong *load) { int len; const uint32_t *data; data = fdt_getprop(fit, noffset, FIT_LOAD_PROP, &len); if (data == NULL) { fit_get_debug(fit, noffset, FIT_LOAD_PROP, len); return -1; } *load = uimage_to_cpu(*data); return 0; } /** * fit_image_get_entry() - get entry point address property * @fit: pointer to the FIT format image header * @noffset: component image node offset * @entry: pointer to the uint32_t, will hold entry point address * * This gets the entry point address property for a given component image * node. * * fit_image_get_entry() finds entry point address property in a given * component image node. If the property is found, its value is returned * to the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_get_entry(const void *fit, int noffset, ulong *entry) { int len; const uint32_t *data; data = fdt_getprop(fit, noffset, FIT_ENTRY_PROP, &len); if (data == NULL) { fit_get_debug(fit, noffset, FIT_ENTRY_PROP, len); return -1; } *entry = uimage_to_cpu(*data); return 0; } /** * fit_image_get_data - get data property and its size for a given component image node * @fit: pointer to the FIT format image header * @noffset: component image node offset * @data: double pointer to void, will hold data property's data address * @size: pointer to size_t, will hold data property's data size * * fit_image_get_data() finds data property in a given component image node. * If the property is found its data start address and size are returned to * the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_get_data(const void *fit, int noffset, const void **data, size_t *size) { int len; *data = fdt_getprop(fit, noffset, FIT_DATA_PROP, &len); if (*data == NULL) { fit_get_debug(fit, noffset, FIT_DATA_PROP, len); *size = 0; return -1; } *size = len; return 0; } /** * fit_image_hash_get_algo - get hash algorithm name * @fit: pointer to the FIT format image header * @noffset: hash node offset * @algo: double pointer to char, will hold pointer to the algorithm name * * fit_image_hash_get_algo() finds hash algorithm property in a given hash node. * If the property is found its data start address is returned to the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_hash_get_algo(const void *fit, int noffset, char **algo) { int len; *algo = (char *)fdt_getprop(fit, noffset, FIT_ALGO_PROP, &len); if (*algo == NULL) { fit_get_debug(fit, noffset, FIT_ALGO_PROP, len); return -1; } return 0; } /** * fit_image_hash_get_value - get hash value and length * @fit: pointer to the FIT format image header * @noffset: hash node offset * @value: double pointer to uint8_t, will hold address of a hash value data * @value_len: pointer to an int, will hold hash data length * * fit_image_hash_get_value() finds hash value property in a given hash node. * If the property is found its data start address and size are returned to * the caller. * * returns: * 0, on success * -1, on failure */ int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value, int *value_len) { int len; *value = (uint8_t *)fdt_getprop(fit, noffset, FIT_VALUE_PROP, &len); if (*value == NULL) { fit_get_debug(fit, noffset, FIT_VALUE_PROP, len); *value_len = 0; return -1; } *value_len = len; return 0; } /** * fit_image_hash_get_ignore - get hash ignore flag * @fit: pointer to the FIT format image header * @noffset: hash node offset * @ignore: pointer to an int, will hold hash ignore flag * * fit_image_hash_get_ignore() finds hash ignore property in a given hash node. * If the property is found and non-zero, the hash algorithm is not verified by * u-boot automatically. * * returns: * 0, on ignore not found * value, on ignore found */ static int fit_image_hash_get_ignore(const void *fit, int noffset, int *ignore) { int len; int *value; value = (int *)fdt_getprop(fit, noffset, FIT_IGNORE_PROP, &len); if (value == NULL || len != sizeof(int)) *ignore = 0; else *ignore = *value; return 0; } /** * fit_set_timestamp - set node timestamp property * @fit: pointer to the FIT format image header * @noffset: node offset * @timestamp: timestamp value to be set * * fit_set_timestamp() attempts to set timestamp property in the requested * node and returns operation status to the caller. * * returns: * 0, on success * -1, on property read failure */ int fit_set_timestamp(void *fit, int noffset, time_t timestamp) { uint32_t t; int ret; t = cpu_to_uimage(timestamp); ret = fdt_setprop(fit, noffset, FIT_TIMESTAMP_PROP, &t, sizeof(uint32_t)); if (ret) { printf("Can't set '%s' property for '%s' node (%s)\n", FIT_TIMESTAMP_PROP, fit_get_name(fit, noffset, NULL), fdt_strerror(ret)); return -1; } return 0; } /** * calculate_hash - calculate and return hash for provided input data * @data: pointer to the input data * @data_len: data length * @algo: requested hash algorithm * @value: pointer to the char, will hold hash value data (caller must * allocate enough free space) * value_len: length of the calculated hash * * calculate_hash() computes input data hash according to the requested * algorithm. * Resulting hash value is placed in caller provided 'value' buffer, length * of the calculated hash is returned via value_len pointer argument. * * returns: * 0, on success * -1, when algo is unsupported */ int calculate_hash(const void *data, int data_len, const char *algo, uint8_t *value, int *value_len) { if (IMAGE_ENABLE_CRC32 && strcmp(algo, "crc32") == 0) { *((uint32_t *)value) = crc32_wd(0, data, data_len, CHUNKSZ_CRC32); *((uint32_t *)value) = cpu_to_uimage(*((uint32_t *)value)); *value_len = 4; } else if (IMAGE_ENABLE_SHA1 && strcmp(algo, "sha1") == 0) { sha1_csum_wd((unsigned char *)data, data_len, (unsigned char *)value, CHUNKSZ_SHA1); *value_len = 20; } else if (IMAGE_ENABLE_MD5 && strcmp(algo, "md5") == 0) { md5_wd((unsigned char *)data, data_len, value, CHUNKSZ_MD5); *value_len = 16; } else { debug("Unsupported hash alogrithm\n"); return -1; } return 0; } static int fit_image_check_hash(const void *fit, int noffset, const void *data, size_t size, char **err_msgp) { uint8_t value[FIT_MAX_HASH_LEN]; int value_len; char *algo; uint8_t *fit_value; int fit_value_len; int ignore; *err_msgp = NULL; if (fit_image_hash_get_algo(fit, noffset, &algo)) { *err_msgp = "Can't get hash algo property"; return -1; } printf("%s", algo); if (IMAGE_ENABLE_IGNORE) { fit_image_hash_get_ignore(fit, noffset, &ignore); if (ignore) { printf("-skipped "); return 0; } } if (fit_image_hash_get_value(fit, noffset, &fit_value, &fit_value_len)) { *err_msgp = "Can't get hash value property"; return -1; } if (calculate_hash(data, size, algo, value, &value_len)) { *err_msgp = "Unsupported hash algorithm"; return -1; } if (value_len != fit_value_len) { *err_msgp = "Bad hash value len"; return -1; } else if (memcmp(value, fit_value, value_len) != 0) { *err_msgp = "Bad hash value"; return -1; } return 0; } /** * fit_image_verify - verify data intergity * @fit: pointer to the FIT format image header * @image_noffset: component image node offset * * fit_image_verify() goes over component image hash nodes, * re-calculates each data hash and compares with the value stored in hash * node. * * returns: * 1, if all hashes are valid * 0, otherwise (or on error) */ int fit_image_verify(const void *fit, int image_noffset) { const void *data; size_t size; int noffset = 0; char *err_msg = ""; int verify_all = 1; int ret; /* Get image data and data length */ if (fit_image_get_data(fit, image_noffset, &data, &size)) { err_msg = "Can't get image data/size"; goto error; } /* Verify all required signatures */ if (IMAGE_ENABLE_VERIFY && fit_image_verify_required_sigs(fit, image_noffset, data, size, gd_fdt_blob(), &verify_all)) { err_msg = "Unable to verify required signature"; goto error; } /* Process all hash subnodes of the component image node */ for (noffset = fdt_first_subnode(fit, image_noffset); noffset >= 0; noffset = fdt_next_subnode(fit, noffset)) { const char *name = fit_get_name(fit, noffset, NULL); /* * Check subnode name, must be equal to "hash". * Multiple hash nodes require unique unit node * names, e.g. hash@1, hash@2, etc. */ if (!strncmp(name, FIT_HASH_NODENAME, strlen(FIT_HASH_NODENAME))) { if (fit_image_check_hash(fit, noffset, data, size, &err_msg)) goto error; puts("+ "); } else if (IMAGE_ENABLE_VERIFY && verify_all && !strncmp(name, FIT_SIG_NODENAME, strlen(FIT_SIG_NODENAME))) { ret = fit_image_check_sig(fit, noffset, data, size, -1, &err_msg); if (ret) puts("- "); else puts("+ "); } } if (noffset == -FDT_ERR_TRUNCATED || noffset == -FDT_ERR_BADSTRUCTURE) { err_msg = "Corrupted or truncated tree"; goto error; } return 1; error: printf(" error!\n%s for '%s' hash node in '%s' image node\n", err_msg, fit_get_name(fit, noffset, NULL), fit_get_name(fit, image_noffset, NULL)); return 0; } /** * fit_all_image_verify - verify data intergity for all images * @fit: pointer to the FIT format image header * * fit_all_image_verify() goes over all images in the FIT and * for every images checks if all it's hashes are valid. * * returns: * 1, if all hashes of all images are valid * 0, otherwise (or on error) */ int fit_all_image_verify(const void *fit) { int images_noffset; int noffset; int ndepth; int count; /* Find images parent node offset */ images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH); if (images_noffset < 0) { printf("Can't find images parent node '%s' (%s)\n", FIT_IMAGES_PATH, fdt_strerror(images_noffset)); return 0; } /* Process all image subnodes, check hashes for each */ printf("## Checking hash(es) for FIT Image at %08lx ...\n", (ulong)fit); for (ndepth = 0, count = 0, noffset = fdt_next_node(fit, images_noffset, &ndepth); (noffset >= 0) && (ndepth > 0); noffset = fdt_next_node(fit, noffset, &ndepth)) { if (ndepth == 1) { /* * Direct child node of the images parent node, * i.e. component image node. */ printf(" Hash(es) for Image %u (%s): ", count++, fit_get_name(fit, noffset, NULL)); if (!fit_image_verify(fit, noffset)) return 0; printf("\n"); } } return 1; } /** * fit_image_check_os - check whether image node is of a given os type * @fit: pointer to the FIT format image header * @noffset: component image node offset * @os: requested image os * * fit_image_check_os() reads image os property and compares its numeric * id with the requested os. Comparison result is returned to the caller. * * returns: * 1 if image is of given os type * 0 otherwise (or on error) */ int fit_image_check_os(const void *fit, int noffset, uint8_t os) { uint8_t image_os; if (fit_image_get_os(fit, noffset, &image_os)) return 0; return (os == image_os); } /** * fit_image_check_arch - check whether image node is of a given arch * @fit: pointer to the FIT format image header * @noffset: component image node offset * @arch: requested imagearch * * fit_image_check_arch() reads image arch property and compares its numeric * id with the requested arch. Comparison result is returned to the caller. * * returns: * 1 if image is of given arch * 0 otherwise (or on error) */ int fit_image_check_arch(const void *fit, int noffset, uint8_t arch) { uint8_t image_arch; if (fit_image_get_arch(fit, noffset, &image_arch)) return 0; return (arch == image_arch); } /** * fit_image_check_type - check whether image node is of a given type * @fit: pointer to the FIT format image header * @noffset: component image node offset * @type: requested image type * * fit_image_check_type() reads image type property and compares its numeric * id with the requested type. Comparison result is returned to the caller. * * returns: * 1 if image is of given type * 0 otherwise (or on error) */ int fit_image_check_type(const void *fit, int noffset, uint8_t type) { uint8_t image_type; if (fit_image_get_type(fit, noffset, &image_type)) return 0; return (type == image_type); } /** * fit_image_check_comp - check whether image node uses given compression * @fit: pointer to the FIT format image header * @noffset: component image node offset * @comp: requested image compression type * * fit_image_check_comp() reads image compression property and compares its * numeric id with the requested compression type. Comparison result is * returned to the caller. * * returns: * 1 if image uses requested compression * 0 otherwise (or on error) */ int fit_image_check_comp(const void *fit, int noffset, uint8_t comp) { uint8_t image_comp; if (fit_image_get_comp(fit, noffset, &image_comp)) return 0; return (comp == image_comp); } /** * fit_check_format - sanity check FIT image format * @fit: pointer to the FIT format image header * * fit_check_format() runs a basic sanity FIT image verification. * Routine checks for mandatory properties, nodes, etc. * * returns: * 1, on success * 0, on failure */ int fit_check_format(const void *fit) { /* mandatory / node 'description' property */ if (fdt_getprop(fit, 0, FIT_DESC_PROP, NULL) == NULL) { debug("Wrong FIT format: no description\n"); return 0; } if (IMAGE_ENABLE_TIMESTAMP) { /* mandatory / node 'timestamp' property */ if (fdt_getprop(fit, 0, FIT_TIMESTAMP_PROP, NULL) == NULL) { debug("Wrong FIT format: no timestamp\n"); return 0; } } /* mandatory subimages parent '/images' node */ if (fdt_path_offset(fit, FIT_IMAGES_PATH) < 0) { debug("Wrong FIT format: no images parent node\n"); return 0; } return 1; } /** * fit_conf_find_compat * @fit: pointer to the FIT format image header * @fdt: pointer to the device tree to compare against * * fit_conf_find_compat() attempts to find the configuration whose fdt is the * most compatible with the passed in device tree. * * Example: * * / o image-tree * |-o images * | |-o fdt@1 * | |-o fdt@2 * | * |-o configurations * |-o config@1 * | |-fdt = fdt@1 * | * |-o config@2 * |-fdt = fdt@2 * * / o U-Boot fdt * |-compatible = "foo,bar", "bim,bam" * * / o kernel fdt1 * |-compatible = "foo,bar", * * / o kernel fdt2 * |-compatible = "bim,bam", "baz,biz" * * Configuration 1 would be picked because the first string in U-Boot's * compatible list, "foo,bar", matches a compatible string in the root of fdt1. * "bim,bam" in fdt2 matches the second string which isn't as good as fdt1. * * returns: * offset to the configuration to use if one was found * -1 otherwise */ int fit_conf_find_compat(const void *fit, const void *fdt) { int ndepth = 0; int noffset, confs_noffset, images_noffset; const void *fdt_compat; int fdt_compat_len; int best_match_offset = 0; int best_match_pos = 0; confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH); images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH); if (confs_noffset < 0 || images_noffset < 0) { debug("Can't find configurations or images nodes.\n"); return -1; } fdt_compat = fdt_getprop(fdt, 0, "compatible", &fdt_compat_len); if (!fdt_compat) { debug("Fdt for comparison has no \"compatible\" property.\n"); return -1; } /* * Loop over the configurations in the FIT image. */ for (noffset = fdt_next_node(fit, confs_noffset, &ndepth); (noffset >= 0) && (ndepth > 0); noffset = fdt_next_node(fit, noffset, &ndepth)) { const void *kfdt; const char *kfdt_name; int kfdt_noffset; const char *cur_fdt_compat; int len; size_t size; int i; if (ndepth > 1) continue; kfdt_name = fdt_getprop(fit, noffset, "fdt", &len); if (!kfdt_name) { debug("No fdt property found.\n"); continue; } kfdt_noffset = fdt_subnode_offset(fit, images_noffset, kfdt_name); if (kfdt_noffset < 0) { debug("No image node named \"%s\" found.\n", kfdt_name); continue; } /* * Get a pointer to this configuration's fdt. */ if (fit_image_get_data(fit, kfdt_noffset, &kfdt, &size)) { debug("Failed to get fdt \"%s\".\n", kfdt_name); continue; } len = fdt_compat_len; cur_fdt_compat = fdt_compat; /* * Look for a match for each U-Boot compatibility string in * turn in this configuration's fdt. */ for (i = 0; len > 0 && (!best_match_offset || best_match_pos > i); i++) { int cur_len = strlen(cur_fdt_compat) + 1; if (!fdt_node_check_compatible(kfdt, 0, cur_fdt_compat)) { best_match_offset = noffset; best_match_pos = i; break; } len -= cur_len; cur_fdt_compat += cur_len; } } if (!best_match_offset) { debug("No match found.\n"); return -1; } return best_match_offset; } /** * fit_conf_get_node - get node offset for configuration of a given unit name * @fit: pointer to the FIT format image header * @conf_uname: configuration node unit name * * fit_conf_get_node() finds a configuration (withing the '/configurations' * parant node) of a provided unit name. If configuration is found its node * offset is returned to the caller. * * When NULL is provided in second argument fit_conf_get_node() will search * for a default configuration node instead. Default configuration node unit * name is retrieved from FIT_DEFAULT_PROP property of the '/configurations' * node. * * returns: * configuration node offset when found (>=0) * negative number on failure (FDT_ERR_* code) */ int fit_conf_get_node(const void *fit, const char *conf_uname) { int noffset, confs_noffset; int len; confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH); if (confs_noffset < 0) { debug("Can't find configurations parent node '%s' (%s)\n", FIT_CONFS_PATH, fdt_strerror(confs_noffset)); return confs_noffset; } if (conf_uname == NULL) { /* get configuration unit name from the default property */ debug("No configuration specified, trying default...\n"); conf_uname = (char *)fdt_getprop(fit, confs_noffset, FIT_DEFAULT_PROP, &len); if (conf_uname == NULL) { fit_get_debug(fit, confs_noffset, FIT_DEFAULT_PROP, len); return len; } debug("Found default configuration: '%s'\n", conf_uname); } noffset = fdt_subnode_offset(fit, confs_noffset, conf_uname); if (noffset < 0) { debug("Can't get node offset for configuration unit name: '%s' (%s)\n", conf_uname, fdt_strerror(noffset)); } return noffset; } int fit_conf_get_prop_node(const void *fit, int noffset, const char *prop_name) { char *uname; int len; /* get kernel image unit name from configuration kernel property */ uname = (char *)fdt_getprop(fit, noffset, prop_name, &len); if (uname == NULL) return len; return fit_image_get_node(fit, uname); } /** * fit_conf_print - prints out the FIT configuration details * @fit: pointer to the FIT format image header * @noffset: offset of the configuration node * @p: pointer to prefix string * * fit_conf_print() lists all mandatory properies for the processed * configuration node. * * returns: * no returned results */ void fit_conf_print(const void *fit, int noffset, const char *p) { char *desc; char *uname; int ret; /* Mandatory properties */ ret = fit_get_desc(fit, noffset, &desc); printf("%s Description: ", p); if (ret) printf("unavailable\n"); else printf("%s\n", desc); uname = (char *)fdt_getprop(fit, noffset, FIT_KERNEL_PROP, NULL); printf("%s Kernel: ", p); if (uname == NULL) printf("unavailable\n"); else printf("%s\n", uname); /* Optional properties */ uname = (char *)fdt_getprop(fit, noffset, FIT_RAMDISK_PROP, NULL); if (uname) printf("%s Init Ramdisk: %s\n", p, uname); uname = (char *)fdt_getprop(fit, noffset, FIT_FDT_PROP, NULL); if (uname) printf("%s FDT: %s\n", p, uname); } int fit_image_select(const void *fit, int rd_noffset, int verify) { fit_image_print(fit, rd_noffset, " "); if (verify) { puts(" Verifying Hash Integrity ... "); if (!fit_image_verify(fit, rd_noffset)) { puts("Bad Data Hash\n"); return -EACCES; } puts("OK\n"); } return 0; } int fit_get_node_from_config(bootm_headers_t *images, const char *prop_name, ulong addr) { int cfg_noffset; void *fit_hdr; int noffset; debug("* %s: using config '%s' from image at 0x%08lx\n", prop_name, images->fit_uname_cfg, addr); /* Check whether configuration has this property defined */ fit_hdr = map_sysmem(addr, 0); cfg_noffset = fit_conf_get_node(fit_hdr, images->fit_uname_cfg); if (cfg_noffset < 0) { debug("* %s: no such config\n", prop_name); return -ENOENT; } noffset = fit_conf_get_prop_node(fit_hdr, cfg_noffset, prop_name); if (noffset < 0) { debug("* %s: no '%s' in config\n", prop_name, prop_name); return -ENOLINK; } return noffset; } int fit_image_load(bootm_headers_t *images, const char *prop_name, ulong addr, const char **fit_unamep, const char **fit_uname_configp, int arch, int image_type, int bootstage_id, enum fit_load_op load_op, ulong *datap, ulong *lenp) { int cfg_noffset, noffset; const char *fit_uname; const char *fit_uname_config; const void *fit; const void *buf; size_t size; int type_ok, os_ok; ulong load, data, len; int ret; fit = map_sysmem(addr, 0); fit_uname = fit_unamep ? *fit_unamep : NULL; fit_uname_config = fit_uname_configp ? *fit_uname_configp : NULL; printf("## Loading %s from FIT Image at %08lx ...\n", prop_name, addr); bootstage_mark(bootstage_id + BOOTSTAGE_SUB_FORMAT); if (!fit_check_format(fit)) { printf("Bad FIT %s image format!\n", prop_name); bootstage_error(bootstage_id + BOOTSTAGE_SUB_FORMAT); return -ENOEXEC; } bootstage_mark(bootstage_id + BOOTSTAGE_SUB_FORMAT_OK); if (fit_uname) { /* get ramdisk component image node offset */ bootstage_mark(bootstage_id + BOOTSTAGE_SUB_UNIT_NAME); noffset = fit_image_get_node(fit, fit_uname); } else { /* * no image node unit name, try to get config * node first. If config unit node name is NULL * fit_conf_get_node() will try to find default config node */ bootstage_mark(bootstage_id + BOOTSTAGE_SUB_NO_UNIT_NAME); if (IMAGE_ENABLE_BEST_MATCH && !fit_uname_config) { cfg_noffset = fit_conf_find_compat(fit, gd_fdt_blob()); } else { cfg_noffset = fit_conf_get_node(fit, fit_uname_config); } if (cfg_noffset < 0) { puts("Could not find configuration node\n"); bootstage_error(bootstage_id + BOOTSTAGE_SUB_NO_UNIT_NAME); return -ENOENT; } fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL); printf(" Using '%s' configuration\n", fit_uname_config); if (image_type == IH_TYPE_KERNEL) { /* Remember (and possibly verify) this config */ images->fit_uname_cfg = fit_uname_config; if (IMAGE_ENABLE_VERIFY && images->verify) { puts(" Verifying Hash Integrity ... "); if (!fit_config_verify(fit, cfg_noffset)) { puts("Bad Data Hash\n"); bootstage_error(bootstage_id + BOOTSTAGE_SUB_HASH); return -EACCES; } puts("OK\n"); } bootstage_mark(BOOTSTAGE_ID_FIT_CONFIG); } noffset = fit_conf_get_prop_node(fit, cfg_noffset, prop_name); fit_uname = fit_get_name(fit, noffset, NULL); } if (noffset < 0) { puts("Could not find subimage node\n"); bootstage_error(bootstage_id + BOOTSTAGE_SUB_SUBNODE); return -ENOENT; } printf(" Trying '%s' %s subimage\n", fit_uname, prop_name); ret = fit_image_select(fit, noffset, images->verify); if (ret) { bootstage_error(bootstage_id + BOOTSTAGE_SUB_HASH); return ret; } bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ARCH); if (!fit_image_check_target_arch(fit, noffset)) { puts("Unsupported Architecture\n"); bootstage_error(bootstage_id + BOOTSTAGE_SUB_CHECK_ARCH); return -ENOEXEC; } if (image_type == IH_TYPE_FLATDT && !fit_image_check_comp(fit, noffset, IH_COMP_NONE)) { puts("FDT image is compressed"); return -EPROTONOSUPPORT; } bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL); type_ok = fit_image_check_type(fit, noffset, image_type) || (image_type == IH_TYPE_KERNEL && fit_image_check_type(fit, noffset, IH_TYPE_KERNEL_NOLOAD)); os_ok = image_type == IH_TYPE_FLATDT || fit_image_check_os(fit, noffset, IH_OS_LINUX); if (!type_ok || !os_ok) { printf("No Linux %s %s Image\n", genimg_get_arch_name(arch), genimg_get_type_name(image_type)); bootstage_error(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL); return -EIO; } bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL_OK); /* get image data address and length */ if (fit_image_get_data(fit, noffset, &buf, &size)) { printf("Could not find %s subimage data!\n", prop_name); bootstage_error(bootstage_id + BOOTSTAGE_SUB_GET_DATA); return -ENOENT; } len = (ulong)size; /* verify that image data is a proper FDT blob */ if (image_type == IH_TYPE_FLATDT && fdt_check_header(buf)) { puts("Subimage data is not a FDT"); return -ENOEXEC; } bootstage_mark(bootstage_id + BOOTSTAGE_SUB_GET_DATA_OK); /* * Work-around for eldk-4.2 which gives this warning if we try to * case in the unmap_sysmem() call: * warning: initialization discards qualifiers from pointer target type */ { void *vbuf = (void *)buf; data = map_to_sysmem(vbuf); } if (load_op == FIT_LOAD_IGNORED) { /* Don't load */ } else if (fit_image_get_load(fit, noffset, &load)) { if (load_op == FIT_LOAD_REQUIRED) { printf("Can't get %s subimage load address!\n", prop_name); bootstage_error(bootstage_id + BOOTSTAGE_SUB_LOAD); return -EBADF; } } else { ulong image_start, image_end; ulong load_end; void *dst; /* * move image data to the load address, * make sure we don't overwrite initial image */ image_start = addr; image_end = addr + fit_get_size(fit); load_end = load + len; if (image_type != IH_TYPE_KERNEL && load < image_end && load_end > image_start) { printf("Error: %s overwritten\n", prop_name); return -EXDEV; } printf(" Loading %s from 0x%08lx to 0x%08lx\n", prop_name, data, load); dst = map_sysmem(load, len); memmove(dst, buf, len); data = load; } bootstage_mark(bootstage_id + BOOTSTAGE_SUB_LOAD); *datap = data; *lenp = len; if (fit_unamep) *fit_unamep = (char *)fit_uname; if (fit_uname_configp) *fit_uname_configp = (char *)fit_uname_config; return noffset; }