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image-fit.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013, Google Inc.
*
* (C) Copyright 2008 Semihalf
*
* (C) Copyright 2000-2006
* Wolfgang Denk, DENX Software Engineering, [email protected].
*/
#ifdef USE_HOSTCC
#include "mkimage.h"
#include <time.h>
#else
#include <linux/compiler.h>
#include <linux/kconfig.h>
#include <common.h>
#include <errno.h>
#include <mapmem.h>
#include <asm/io.h>
#include <malloc.h>
DECLARE_GLOBAL_DATA_PTR;
#endif /* !USE_HOSTCC*/
#include <image.h>
#include <bootstage.h>
#include <u-boot/crc.h>
#include <u-boot/md5.h>
#include <u-boot/sha1.h>
#include <u-boot/sha256.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));
}
/**
* fit_get_subimage_count - get component (sub-image) count
* @fit: pointer to the FIT format image header
* @images_noffset: offset of images node
*
* returns:
* number of image components
*/
int fit_get_subimage_count(const void *fit, int images_noffset)
{
int noffset;
int ndepth;
int count = 0;
/* 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) {
count++;
}
}
return count;
}
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_FIT_PRINT)
/**
* 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 properties 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;
const char *padding;
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");
padding = fdt_getprop(fit, noffset, "padding", NULL);
if (padding)
printf("%s %s padding: %s\n", p, type, padding);
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 properties 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_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 properties for the processed
* configuration node.
*
* returns:
* no returned results
*/
static void fit_conf_print(const void *fit, int noffset, const char *p)
{
char *desc;
const char *uname;
int ret;
int fdt_index, loadables_index;
int ndepth;
/* Mandatory properties */
ret = fit_get_desc(fit, noffset, &desc);
printf("%s Description: ", p);
if (ret)
printf("unavailable\n");
else
printf("%s\n", desc);
uname = fdt_getprop(fit, noffset, FIT_KERNEL_PROP, NULL);
printf("%s Kernel: ", p);
if (!uname)
printf("unavailable\n");
else
printf("%s\n", uname);
/* Optional properties */
uname = fdt_getprop(fit, noffset, FIT_RAMDISK_PROP, NULL);
if (uname)
printf("%s Init Ramdisk: %s\n", p, uname);
uname = fdt_getprop(fit, noffset, FIT_FIRMWARE_PROP, NULL);
if (uname)
printf("%s Firmware: %s\n", p, uname);
for (fdt_index = 0;
uname = fdt_stringlist_get(fit, noffset, FIT_FDT_PROP,
fdt_index, NULL), uname;
fdt_index++) {
if (fdt_index == 0)
printf("%s FDT: ", p);
else
printf("%s ", p);
printf("%s\n", uname);
}
uname = fdt_getprop(fit, noffset, FIT_FPGA_PROP, NULL);
if (uname)
printf("%s FPGA: %s\n", p, uname);
/* Print out all of the specified loadables */
for (loadables_index = 0;
uname = fdt_stringlist_get(fit, noffset, FIT_LOADABLE_PROP,
loadables_index, NULL), uname;
loadables_index++) {
if (loadables_index == 0) {
printf("%s Loadables: ", p);
} else {
printf("%s ", p);
}
printf("%s\n", uname);
}
/* Process all hash subnodes of the component configuration node */
for (ndepth = 0, noffset = fdt_next_node(fit, noffset, &ndepth);
(noffset >= 0) && (ndepth > 0);
noffset = fdt_next_node(fit, noffset, &ndepth)) {
if (ndepth == 1) {
/* Direct child node of the component configuration node */
fit_image_print_verification_data(fit, noffset, p);
}
}
}
/**
* 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) followed 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 - 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 properties 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_and_size(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) ||
(type == IH_TYPE_FIRMWARE)) {
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) ||
(type == IH_TYPE_FPGA)) {
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);
}
/* optional load address for FDT */
if (type == IH_TYPE_FLATDT && !fit_image_get_load(fit, image_noffset, &load))
printf("%s Load Address: 0x%08lx\n", p, load);
if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_STANDALONE) ||
(type == IH_TYPE_RAMDISK)) {
ret = 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);
}
}
}
#else
void fit_print_contents(const void *fit) { }
void fit_image_print(const void *fit, int image_noffset, const char *p) { }
#endif /* !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_FIT_PRINT) */
/**
* 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 description
*
* fit_get_desc() reads description property from a given node, if
* description is found pointer to it is returned 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 property from given node, if timestamp
* is found and has a correct size its value is returned 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 (within 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;
}
static int fit_image_get_address(const void *fit, int noffset, char *name,
ulong *load)
{
int len, cell_len;
const fdt32_t *cell;
uint64_t load64 = 0;
cell = fdt_getprop(fit, noffset, name, &len);
if (cell == NULL) {
fit_get_debug(fit, noffset, name, len);
return -1;
}
if (len > sizeof(ulong)) {
printf("Unsupported %s address size\n", name);
return -1;
}
cell_len = len >> 2;
/* Use load64 to avoid compiling warning for 32-bit target */
while (cell_len--) {
load64 = (load64 << 32) | uimage_to_cpu(*cell);
cell++;
}
*load = (ulong)load64;
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)
{
return fit_image_get_address(fit, noffset, FIT_LOAD_PROP, load);
}
/**
* 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)
{
return fit_image_get_address(fit, noffset, FIT_ENTRY_PROP, entry);
}
/**
* 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;
}
/**
* Get 'data-offset' property from a given image node.
*
* @fit: pointer to the FIT image header
* @noffset: component image node offset
* @data_offset: holds the data-offset property
*
* returns:
* 0, on success
* -ENOENT if the property could not be found
*/
int fit_image_get_data_offset(const void *fit, int noffset, int *data_offset)
{
const fdt32_t *val;
val = fdt_getprop(fit, noffset, FIT_DATA_OFFSET_PROP, NULL);
if (!val)
return -ENOENT;
*data_offset = fdt32_to_cpu(*val);
return 0;
}
/**
* Get 'data-position' property from a given image node.
*
* @fit: pointer to the FIT image header
* @noffset: component image node offset
* @data_position: holds the data-position property
*
* returns:
* 0, on success
* -ENOENT if the property could not be found
*/
int fit_image_get_data_position(const void *fit, int noffset,
int *data_position)
{
const fdt32_t *val;
val = fdt_getprop(fit, noffset, FIT_DATA_POSITION_PROP, NULL);
if (!val)
return -ENOENT;
*data_position = fdt32_to_cpu(*val);
return 0;
}
/**
* Get 'data-size' property from a given image node.
*
* @fit: pointer to the FIT image header
* @noffset: component image node offset
* @data_size: holds the data-size property
*
* returns:
* 0, on success
* -ENOENT if the property could not be found
*/
int fit_image_get_data_size(const void *fit, int noffset, int *data_size)
{
const fdt32_t *val;
val = fdt_getprop(fit, noffset, FIT_DATA_SIZE_PROP, NULL);
if (!val)
return -ENOENT;
*data_size = fdt32_to_cpu(*val);
return 0;
}
/**
* fit_image_get_data_and_size - get data and its size including
* both embedded and external data
* @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_and_size() finds data and its size including
* both embedded and external data. If the property is found
* its data start address and size are returned to the caller.
*
* returns:
* 0, on success
* otherwise, on failure
*/
int fit_image_get_data_and_size(const void *fit, int noffset,
const void **data, size_t *size)
{
bool external_data = false;
int offset;
int len;
int ret;
if (!fit_image_get_data_position(fit, noffset, &offset)) {
external_data = true;
} else if (!fit_image_get_data_offset(fit, noffset, &offset)) {
external_data = true;
/*
* For FIT with external data, figure out where
* the external images start. This is the base
* for the data-offset properties in each image.
*/
offset += ((fdt_totalsize(fit) + 3) & ~3);
}
if (external_data) {
debug("External Data\n");
ret = fit_image_get_data_size(fit, noffset, &len);
*data = fit + offset;
*size = len;
} else {
ret = fit_image_get_data(fit, noffset, data, size);
}
return ret;
}
/**
* 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