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Diffstat (limited to 'common/image-fit.c')
| -rw-r--r-- | common/image-fit.c | 1492 |
1 files changed, 1492 insertions, 0 deletions
diff --git a/common/image-fit.c b/common/image-fit.c new file mode 100644 index 0000000000..254feecaad --- /dev/null +++ b/common/image-fit.c @@ -0,0 +1,1492 @@ +/* + * Copyright (c) 2013, Google Inc. + * + * (C) Copyright 2008 Semihalf + * + * (C) Copyright 2000-2006 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifdef USE_HOSTCC +#include "mkimage.h" +#include <image.h> +#include <time.h> +#else +#include <common.h> +#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 for 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 for 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 + * + * fit_image_print_data() lists properies for the processed hash node + * + * returns: + * no returned results + */ +static void fit_image_print_data(const void *fit, int noffset, const char *p) +{ + char *algo; + uint8_t *value; + int value_len; + int i, ret; + + /* + * 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(fit_get_name(fit, noffset, NULL), + FIT_HASH_NODENAME, + strlen(FIT_HASH_NODENAME)) != 0) + return; + + debug("%s Hash node: '%s'\n", p, + fit_get_name(fit, noffset, NULL)); + + printf("%s Hash algo: ", p); + if (fit_image_hash_get_algo(fit, noffset, &algo)) { + printf("invalid/unsupported\n"); + return; + } + printf("%s\n", algo); + + ret = fit_image_hash_get_value(fit, noffset, &value, + &value_len); + printf("%s Hash value: ", p); + if (ret) { + printf("unavailable\n"); + } else { + for (i = 0; i < value_len; i++) + printf("%02x", value[i]); + printf("\n"); + } + + debug("%s Hash len: %d\n", p, value_len); +} + +/** + * 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); +} + +/** + * 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); + + 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 + printf("0x%08lx\n", (ulong)data); +#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; + char *err_msg = ""; + + /* Get image data and data length */ + if (fit_image_get_data(fit, image_noffset, &data, &size)) { + err_msg = "Can't get image data/size"; + return 0; + } + + /* 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("+ "); + } + } + + 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 retrived 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_get_kernel_node - get kernel image node offset that corresponds to + * a given configuration + * @fit: pointer to the FIT format image header + * @noffset: configuration node offset + * + * fit_conf_get_kernel_node() retrives kernel image node unit name from + * configuration FIT_KERNEL_PROP property and translates it to the node + * offset. + * + * returns: + * image node offset when found (>=0) + * negative number on failure (FDT_ERR_* code) + */ +int fit_conf_get_kernel_node(const void *fit, int noffset) +{ + return fit_conf_get_prop_node(fit, noffset, FIT_KERNEL_PROP); +} + +/** + * fit_conf_get_ramdisk_node - get ramdisk image node offset that corresponds to + * a given configuration + * @fit: pointer to the FIT format image header + * @noffset: configuration node offset + * + * fit_conf_get_ramdisk_node() retrives ramdisk image node unit name from + * configuration FIT_KERNEL_PROP property and translates it to the node + * offset. + * + * returns: + * image node offset when found (>=0) + * negative number on failure (FDT_ERR_* code) + */ +int fit_conf_get_ramdisk_node(const void *fit, int noffset) +{ + return fit_conf_get_prop_node(fit, noffset, FIT_RAMDISK_PROP); +} + +/** + * fit_conf_get_fdt_node - get fdt image node offset that corresponds to + * a given configuration + * @fit: pointer to the FIT format image header + * @noffset: configuration node offset + * + * fit_conf_get_fdt_node() retrives fdt image node unit name from + * configuration FIT_KERNEL_PROP property and translates it to the node + * offset. + * + * returns: + * image node offset when found (>=0) + * negative number on failure (FDT_ERR_* code) + */ +int fit_conf_get_fdt_node(const void *fit, int noffset) +{ + return fit_conf_get_prop_node(fit, noffset, FIT_FDT_PROP); +} + +/** + * 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); +} + +/** + * fit_check_ramdisk - verify FIT format ramdisk subimage + * @fit_hdr: pointer to the FIT ramdisk header + * @rd_noffset: ramdisk subimage node offset within FIT image + * @arch: requested ramdisk image architecture type + * @verify: data CRC verification flag + * + * fit_check_ramdisk() verifies integrity of the ramdisk subimage and from + * specified FIT image. + * + * returns: + * 1, on success + * 0, on failure + */ +int fit_check_ramdisk(const void *fit, int rd_noffset, uint8_t arch, + 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"); + bootstage_error(BOOTSTAGE_ID_FIT_RD_HASH); + return 0; + } + puts("OK\n"); + } + + bootstage_mark(BOOTSTAGE_ID_FIT_RD_CHECK_ALL); + if (!fit_image_check_os(fit, rd_noffset, IH_OS_LINUX) || + !fit_image_check_arch(fit, rd_noffset, arch) || + !fit_image_check_type(fit, rd_noffset, IH_TYPE_RAMDISK)) { + printf("No Linux %s Ramdisk Image\n", + genimg_get_arch_name(arch)); + bootstage_error(BOOTSTAGE_ID_FIT_RD_CHECK_ALL); + return 0; + } + + bootstage_mark(BOOTSTAGE_ID_FIT_RD_CHECK_ALL_OK); + return 1; +} |