/*
* 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));
}
/**
* 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);
}
}
}
/**
* 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 (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 (strcmp(algo, "sha1") == 0) {
sha1_csum_wd((unsigned char *)data, data_len,
(unsigned char *)value, CHUNKSZ_SHA1);
*value_len = 20;
} else if (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;
}