u-boot/common/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, wd@denx.de.
*/
#ifdef USE_HOSTCC
#include "mkimage.h"
#include <time.h>
#include <linux/libfdt.h>
#include <u-boot/crc.h>
#else
#include <linux/compiler.h>
#include <linux/kconfig.h>
#include <common.h>
#include <errno.h>
#include <log.h>
#include <mapmem.h>
#include <asm/io.h>
#include <malloc.h>
DECLARE_GLOBAL_DATA_PTR;
#endif /* !USE_HOSTCC*/
#include <bootm.h>
#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>
#include <u-boot/sha512.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;
bool 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, FIT_KEY_HINT, NULL);
required = fdt_getprop(fit, noffset, FIT_KEY_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, &timestamp))
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, &timestamp);
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, &timestamp);
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;
}
/**
* Get 'data-size-unciphered' 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_unciphered(const void *fit, int noffset,
size_t *data_size)
{
const fdt32_t *val;
val = fdt_getprop(fit, noffset, "data-size-unciphered", NULL);
if (!val)
return -ENOENT;
*data_size = (size_t)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);
if (!ret) {
*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
*
* 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_image_cipher_get_algo - get cipher algorithm name
* @fit: pointer to the FIT format image header
* @noffset: cipher node offset
* @algo: double pointer to char, will hold pointer to the algorithm name
*
* fit_image_cipher_get_algo() finds cipher algorithm property in a given
* cipher 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_cipher_get_algo(const void *fit, int noffset, char **algo)
{
int len;
*algo = (char *)fdt_getprop(fit, noffset, FIT_ALGO_PROP, &len);
if (!*algo) {
fit_get_debug(fit, noffset, FIT_ALGO_PROP, len);
return -1;
}
return 0;
}
ulong fit_get_end(const void *fit)
{
return map_to_sysmem((void *)(fit + fdt_totalsize(fit)));
}
/**
* 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
* -ENOSPC if no space in device tree, -1 for other error
*/
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) {
debug("Can't set '%s' property for '%s' node (%s)\n",
FIT_TIMESTAMP_PROP, fit_get_name(fit, noffset, NULL),
fdt_strerror(ret));
return ret == -FDT_ERR_NOSPACE ? -ENOSPC : -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_SHA256 && strcmp(algo, "sha256") == 0) {
sha256_csum_wd((unsigned char *)data, data_len,
(unsigned char *)value, CHUNKSZ_SHA256);
*value_len = SHA256_SUM_LEN;
} else if (IMAGE_ENABLE_SHA384 && strcmp(algo, "sha384") == 0) {
sha384_csum_wd((unsigned char *)data, data_len,
(unsigned char *)value, CHUNKSZ_SHA384);
*value_len = SHA384_SUM_LEN;
} else if (IMAGE_ENABLE_SHA512 && strcmp(algo, "sha512") == 0) {
sha512_csum_wd((unsigned char *)data, data_len,
(unsigned char *)value, CHUNKSZ_SHA512);
*value_len = SHA512_SUM_LEN;
} 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;
}
int fit_image_verify_with_data(const void *fit, int image_noffset,
const void *data, size_t size)
{
int noffset = 0;
char *err_msg = "";
int verify_all = 1;
int ret;
/* Verify all required signatures */
if (FIT_IMAGE_ENABLE_VERIFY &&
fit_image_verify_required_sigs(fit, image_noffset, data, size,
gd_fdt_blob(), &verify_all)) {
err_msg = "Unable to verify required signature";
goto error;
}
/* Process all hash subnodes of the component image node */
fdt_for_each_subnode(noffset, fit, image_noffset) {
const char *name = fit_get_name(fit, noffset, NULL);
/*
* Check subnode name, must be equal to "hash".
* Multiple hash nodes require unique unit node
* names, e.g. hash-1, hash-2, etc.
*/
if (!strncmp(name, FIT_HASH_NODENAME,
strlen(FIT_HASH_NODENAME))) {
if (fit_image_check_hash(fit, noffset, data, size,
&err_msg))
goto error;
puts("+ ");
} else if (FIT_IMAGE_ENABLE_VERIFY && verify_all &&
!strncmp(name, FIT_SIG_NODENAME,
strlen(FIT_SIG_NODENAME))) {
ret = fit_image_check_sig(fit, noffset, data,
size, -1, &err_msg);
/*
* Show an indication on failure, but do not return
* an error. Only keys marked 'required' can cause
* an image validation failure. See the call to
* fit_image_verify_required_sigs() above.
*/
if (ret)
puts("- ");
else
puts("+ ");
}
}
if (noffset == -FDT_ERR_TRUNCATED || noffset == -FDT_ERR_BADSTRUCTURE) {
err_msg = "Corrupted or truncated tree";
goto error;
}
return 1;
error:
printf(" error!\n%s for '%s' hash node in '%s' image node\n",
err_msg, fit_get_name(fit, noffset, NULL),
fit_get_name(fit, image_noffset, NULL));
return 0;
}
/**
* fit_image_verify - verify data integrity
* @fit: pointer to the FIT format image header
* @image_noffset: component image node offset
*
* fit_image_verify() goes over component image hash nodes,
* re-calculates each data hash and compares with the value stored in hash
* node.
*
* returns:
* 1, if all hashes are valid
* 0, otherwise (or on error)
*/
int fit_image_verify(const void *fit, int image_noffset)
{
const void *data;
size_t size;
int noffset = 0;
char *err_msg = "";
/* Get image data and data length */
if (fit_image_get_data_and_size(fit, image_noffset, &data, &size)) {
err_msg = "Can't get image data/size";
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;
}
return fit_image_verify_with_data(fit, image_noffset, data, size);
}
/**
* fit_all_image_verify - verify data integrity 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));
count++;
if (!fit_image_verify(fit, noffset))
return 0;
printf("\n");
}
}
return 1;
}
#ifdef CONFIG_FIT_CIPHER
static int fit_image_uncipher(const void *fit, int image_noffset,
void **data, size_t *size)
{
int cipher_noffset, ret;
void *dst;
size_t size_dst;
cipher_noffset = fdt_subnode_offset(fit, image_noffset,
FIT_CIPHER_NODENAME);
if (cipher_noffset < 0)
return 0;
ret = fit_image_decrypt_data(fit, image_noffset, cipher_noffset,
*data, *size, &dst, &size_dst);
if (ret)
goto out;
*data = dst;
*size = size_dst;
out:
return ret;
}
#endif /* CONFIG_FIT_CIPHER */
/**
* 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;
int aarch32_support = 0;
#ifdef CONFIG_ARM64_SUPPORT_AARCH32
aarch32_support = 1;
#endif
if (fit_image_get_arch(fit, noffset, &image_arch))
return 0;
return (arch == image_arch) ||
(arch == IH_ARCH_I386 && image_arch == IH_ARCH_X86_64) ||
(arch == IH_ARCH_ARM64 && image_arch == IH_ARCH_ARM &&
aarch32_support);
}
/**
* 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.
*
* As an optimization, the compatible property from the FDT's root node can be
* copied into the configuration node in the FIT image. This is required to
* match configurations with compressed FDTs.
*
* 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 *fdt;
const char *kfdt_name;
int kfdt_noffset, compat_noffset;
const char *cur_fdt_compat;
int len;
size_t sz;
int i;
if (ndepth > 1)
continue;
/* If there's a compat property in the config node, use that. */
if (fdt_getprop(fit, noffset, "compatible", NULL)) {
fdt = fit; /* search in FIT image */
compat_noffset = noffset; /* search under config node */
} else { /* Otherwise extract it from the kernel FDT. */
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;
}
if (!fit_image_check_comp(fit, kfdt_noffset,
IH_COMP_NONE)) {
debug("Can't extract compat from \"%s\" "
"(compressed)\n", kfdt_name);
continue;
}
/* search in this config's kernel FDT */
if (fit_image_get_data(fit, kfdt_noffset, &fdt, &sz)) {
debug("Failed to get fdt \"%s\".\n", kfdt_name);
continue;
}
compat_noffset = 0; /* search kFDT under root node */
}
len = fdt_compat_len;
cur_fdt_compat = fdt_compat;
/*
* Look for a match for each U-Boot compatibility string in
* turn in the compat string property.
*/
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(fdt, compat_noffset,
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;
}
int fit_conf_get_node(const void *fit, const char *conf_uname)
{
int noffset, confs_noffset;
int len;
const char *s;
char *conf_uname_copy = NULL;
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);
}
s = strchr(conf_uname, '#');
if (s) {
len = s - conf_uname;
conf_uname_copy = malloc(len + 1);
if (!conf_uname_copy) {
debug("Can't allocate uname copy: '%s'\n",
conf_uname);
return -ENOMEM;
}
memcpy(conf_uname_copy, conf_uname, len);
conf_uname_copy[len] = '\0';
conf_uname = conf_uname_copy;
}
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));
}
if (conf_uname_copy)
free(conf_uname_copy);
return noffset;
}
int fit_conf_get_prop_node_count(const void *fit, int noffset,
const char *prop_name)
{
return fdt_stringlist_count(fit, noffset, prop_name);
}
int fit_conf_get_prop_node_index(const void *fit, int noffset,
const char *prop_name, int index)
{
const char *uname;
int len;
/* get kernel image unit name from configuration kernel property */
uname = fdt_stringlist_get(fit, noffset, prop_name, index, &len);
if (uname == NULL)
return len;
return fit_image_get_node(fit, uname);
}
int fit_conf_get_prop_node(const void *fit, int noffset,
const char *prop_name)
{
return fit_conf_get_prop_node_index(fit, noffset, prop_name, 0);
}
static int fit_image_select(const void *fit, int rd_noffset, int verify)
{
fit_image_print(fit, rd_noffset, " ");
if (verify) {
puts(" Verifying Hash Integrity ... ");
if (!fit_image_verify(fit, rd_noffset)) {
puts("Bad Data Hash\n");
return -EACCES;
}
puts("OK\n");
}
return 0;
}
int fit_get_node_from_config(bootm_headers_t *images, const char *prop_name,
ulong addr)
{
int cfg_noffset;
void *fit_hdr;
int noffset;
debug("* %s: using config '%s' from image at 0x%08lx\n",
prop_name, images->fit_uname_cfg, addr);
/* Check whether configuration has this property defined */
fit_hdr = map_sysmem(addr, 0);
cfg_noffset = fit_conf_get_node(fit_hdr, images->fit_uname_cfg);
if (cfg_noffset < 0) {
debug("* %s: no such config\n", prop_name);
image-fit: Fix fit_get_node_from_config semantics Commit bac17b78dace ("image-fit: switch ENOLINK to ENOENT") changed fit_get_node_from_config to return -ENOENT when a property doesn't exist, but didn't change any of its callers which check return values. Notably it didn't change boot_get_ramdisk, which leads to U-Boot failing to boot FIT images which don't include ramdisks with the following message: Ramdisk image is corrupt or invalid It also didn't take into account that by returning -ENOENT to denote the lack of a property we lost the ability to determine from the return value of fit_get_node_from_config whether it was the property or the configuration node that was missing, which may potentially lead callers to accept invalid FIT images. Fix this by having fit_get_node_from_config return -EINVAL when the configuration node isn't found and -ENOENT when the property isn't found, which seems to make semantic sense. Callers that previously checked for -ENOLINK are adjusted to check for -ENOENT, which fixes the breakage introduced by commit bac17b78dace ("image-fit: switch ENOLINK to ENOENT"). The only other user of the return fit_get_node_from_config return value, indirectly, is bootm_find_os which already checked for -ENOENT. From a read-through of the code I suspect it ought to have been checking for -ENOLINK prior to bac17b78dace ("image-fit: switch ENOLINK to ENOENT") anyway, which would make it right after this patch, but this would be good to get verified by someone who knows this x86 code or is able to test it. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jonathan Gray <jsg@jsg.id.au> Cc: Marek Vasut <marex@denx.de> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Stefan Roese <sr@denx.de> Acked-by: George McCollister <george.mccollister@gmail.com> Tested-by: George McCollister <george.mccollister@gmail.com>
2016-09-20 17:17:12 +00:00
return -EINVAL;
}
noffset = fit_conf_get_prop_node(fit_hdr, cfg_noffset, prop_name);
if (noffset < 0) {
debug("* %s: no '%s' in config\n", prop_name, prop_name);
return -ENOENT;
}
return noffset;
}
/**
* fit_get_image_type_property() - get property name for IH_TYPE_...
*
* @return the properly name where we expect to find the image in the
* config node
*/
static const char *fit_get_image_type_property(int type)
{
/*
* This is sort-of available in the uimage_type[] table in image.c
* but we don't have access to the short name, and "fdt" is different
* anyway. So let's just keep it here.
*/
switch (type) {
case IH_TYPE_FLATDT:
return FIT_FDT_PROP;
case IH_TYPE_KERNEL:
return FIT_KERNEL_PROP;
case IH_TYPE_RAMDISK:
return FIT_RAMDISK_PROP;
case IH_TYPE_X86_SETUP:
return FIT_SETUP_PROP;
case IH_TYPE_LOADABLE:
return FIT_LOADABLE_PROP;
case IH_TYPE_FPGA:
return FIT_FPGA_PROP;
case IH_TYPE_STANDALONE:
return FIT_STANDALONE_PROP;
}
return "unknown";
}
int fit_image_load(bootm_headers_t *images, ulong addr,
const char **fit_unamep, const char **fit_uname_configp,
int arch, int image_type, int bootstage_id,
enum fit_load_op load_op, ulong *datap, ulong *lenp)
{
int cfg_noffset, noffset;
const char *fit_uname;
const char *fit_uname_config;
const char *fit_base_uname_config;
const void *fit;
void *buf;
void *loadbuf;
size_t size;
int type_ok, os_ok;
ulong load, load_end, data, len;
uint8_t os, comp;
#ifndef USE_HOSTCC
uint8_t os_arch;
#endif
const char *prop_name;
int ret;
fit = map_sysmem(addr, 0);
fit_uname = fit_unamep ? *fit_unamep : NULL;
fit_uname_config = fit_uname_configp ? *fit_uname_configp : NULL;
fit_base_uname_config = NULL;
prop_name = fit_get_image_type_property(image_type);
printf("## Loading %s from FIT Image at %08lx ...\n", prop_name, addr);
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_FORMAT);
if (!fit_check_format(fit)) {
printf("Bad FIT %s image format!\n", prop_name);
bootstage_error(bootstage_id + BOOTSTAGE_SUB_FORMAT);
return -ENOEXEC;
}
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_FORMAT_OK);
if (fit_uname) {
/* get FIT component image node offset */
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_UNIT_NAME);
noffset = fit_image_get_node(fit, fit_uname);
} else {
/*
* no image node unit name, try to get config
* node first. If config unit node name is NULL
* fit_conf_get_node() will try to find default config node
*/
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_NO_UNIT_NAME);
if (IMAGE_ENABLE_BEST_MATCH && !fit_uname_config) {
cfg_noffset = fit_conf_find_compat(fit, gd_fdt_blob());
} else {
cfg_noffset = fit_conf_get_node(fit,
fit_uname_config);
}
if (cfg_noffset < 0) {
puts("Could not find configuration node\n");
bootstage_error(bootstage_id +
BOOTSTAGE_SUB_NO_UNIT_NAME);
return -ENOENT;
}
fit_base_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
printf(" Using '%s' configuration\n", fit_base_uname_config);
/* Remember this config */
if (image_type == IH_TYPE_KERNEL)
images->fit_uname_cfg = fit_base_uname_config;
if (FIT_IMAGE_ENABLE_VERIFY && images->verify) {
puts(" Verifying Hash Integrity ... ");
if (fit_config_verify(fit, cfg_noffset)) {
puts("Bad Data Hash\n");
bootstage_error(bootstage_id +
BOOTSTAGE_SUB_HASH);
return -EACCES;
}
puts("OK\n");
}
bootstage_mark(BOOTSTAGE_ID_FIT_CONFIG);
noffset = fit_conf_get_prop_node(fit, cfg_noffset,
prop_name);
fit_uname = fit_get_name(fit, noffset, NULL);
}
if (noffset < 0) {
printf("Could not find subimage node type '%s'\n", prop_name);
bootstage_error(bootstage_id + BOOTSTAGE_SUB_SUBNODE);
return -ENOENT;
}
printf(" Trying '%s' %s subimage\n", fit_uname, prop_name);
ret = fit_image_select(fit, noffset, images->verify);
if (ret) {
bootstage_error(bootstage_id + BOOTSTAGE_SUB_HASH);
return ret;
}
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ARCH);
#if !defined(USE_HOSTCC) && !defined(CONFIG_SANDBOX)
if (!fit_image_check_target_arch(fit, noffset)) {
puts("Unsupported Architecture\n");
bootstage_error(bootstage_id + BOOTSTAGE_SUB_CHECK_ARCH);
return -ENOEXEC;
}
#endif
#ifndef USE_HOSTCC
fit_image_get_arch(fit, noffset, &os_arch);
images->os.arch = os_arch;
#endif
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL);
type_ok = fit_image_check_type(fit, noffset, image_type) ||
fit_image_check_type(fit, noffset, IH_TYPE_FIRMWARE) ||
(image_type == IH_TYPE_KERNEL &&
fit_image_check_type(fit, noffset, IH_TYPE_KERNEL_NOLOAD));
os_ok = image_type == IH_TYPE_FLATDT ||
image_type == IH_TYPE_FPGA ||
fit_image_check_os(fit, noffset, IH_OS_LINUX) ||
fit_image_check_os(fit, noffset, IH_OS_U_BOOT) ||
fit_image_check_os(fit, noffset, IH_OS_OPENRTOS) ||
fit_image_check_os(fit, noffset, IH_OS_EFI) ||
fit_image_check_os(fit, noffset, IH_OS_VXWORKS);
/*
* If either of the checks fail, we should report an error, but
* if the image type is coming from the "loadables" field, we
* don't care what it is
*/
if ((!type_ok || !os_ok) && image_type != IH_TYPE_LOADABLE) {
fit_image_get_os(fit, noffset, &os);
printf("No %s %s %s Image\n",
genimg_get_os_name(os),
genimg_get_arch_name(arch),
genimg_get_type_name(image_type));
bootstage_error(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL);
return -EIO;
}
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL_OK);
/* get image data address and length */
if (fit_image_get_data_and_size(fit, noffset,
(const void **)&buf, &size)) {
printf("Could not find %s subimage data!\n", prop_name);
bootstage_error(bootstage_id + BOOTSTAGE_SUB_GET_DATA);
return -ENOENT;
}
#ifdef CONFIG_FIT_CIPHER
/* Decrypt data before uncompress/move */
if (IMAGE_ENABLE_DECRYPT) {
puts(" Decrypting Data ... ");
if (fit_image_uncipher(fit, noffset, &buf, &size)) {
puts("Error\n");
return -EACCES;
}
puts("OK\n");
}
#endif
#if !defined(USE_HOSTCC) && defined(CONFIG_FIT_IMAGE_POST_PROCESS)
/* perform any post-processing on the image data */
board_fit_image_post_process(&buf, &size);
#endif
len = (ulong)size;
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_GET_DATA_OK);
data = map_to_sysmem(buf);
load = data;
if (load_op == FIT_LOAD_IGNORED) {
/* Don't load */
} else if (fit_image_get_load(fit, noffset, &load)) {
if (load_op == FIT_LOAD_REQUIRED) {
printf("Can't get %s subimage load address!\n",
prop_name);
bootstage_error(bootstage_id + BOOTSTAGE_SUB_LOAD);
return -EBADF;
}
} else if (load_op != FIT_LOAD_OPTIONAL_NON_ZERO || load) {
ulong image_start, image_end;
/*
* move image data to the load address,
* make sure we don't overwrite initial image
*/
image_start = addr;
image_end = addr + fit_get_size(fit);
load_end = load + len;
if (image_type != IH_TYPE_KERNEL &&
load < image_end && load_end > image_start) {
printf("Error: %s overwritten\n", prop_name);
return -EXDEV;
}
printf(" Loading %s from 0x%08lx to 0x%08lx\n",
prop_name, data, load);
} else {
load = data; /* No load address specified */
}
comp = IH_COMP_NONE;
loadbuf = buf;
/* Kernel images get decompressed later in bootm_load_os(). */
if (!fit_image_get_comp(fit, noffset, &comp) &&
comp != IH_COMP_NONE &&
!(image_type == IH_TYPE_KERNEL ||
image_type == IH_TYPE_KERNEL_NOLOAD ||
image_type == IH_TYPE_RAMDISK)) {
ulong max_decomp_len = len * 20;
if (load == data) {
loadbuf = malloc(max_decomp_len);
load = map_to_sysmem(loadbuf);
} else {
loadbuf = map_sysmem(load, max_decomp_len);
}
if (image_decomp(comp, load, data, image_type,
loadbuf, buf, len, max_decomp_len, &load_end)) {
printf("Error decompressing %s\n", prop_name);
return -ENOEXEC;
}
len = load_end - load;
} else if (load != data) {
loadbuf = map_sysmem(load, len);
memcpy(loadbuf, buf, len);
}
if (image_type == IH_TYPE_RAMDISK && comp != IH_COMP_NONE)
puts("WARNING: 'compression' nodes for ramdisks are deprecated,"
" please fix your .its file!\n");
/* verify that image data is a proper FDT blob */
if (image_type == IH_TYPE_FLATDT && fdt_check_header(loadbuf)) {
puts("Subimage data is not a FDT");
return -ENOEXEC;
}
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_LOAD);
*datap = load;
*lenp = len;
if (fit_unamep)
*fit_unamep = (char *)fit_uname;
if (fit_uname_configp)
*fit_uname_configp = (char *)(fit_uname_config ? :
fit_base_uname_config);
return noffset;
}
int boot_get_setup_fit(bootm_headers_t *images, uint8_t arch,
ulong *setup_start, ulong *setup_len)
{
int noffset;
ulong addr;
ulong len;
int ret;
addr = map_to_sysmem(images->fit_hdr_os);
noffset = fit_get_node_from_config(images, FIT_SETUP_PROP, addr);
if (noffset < 0)
return noffset;
ret = fit_image_load(images, addr, NULL, NULL, arch,
IH_TYPE_X86_SETUP, BOOTSTAGE_ID_FIT_SETUP_START,
FIT_LOAD_REQUIRED, setup_start, &len);
return ret;
}
#ifndef USE_HOSTCC
int boot_get_fdt_fit(bootm_headers_t *images, ulong addr,
const char **fit_unamep, const char **fit_uname_configp,
int arch, ulong *datap, ulong *lenp)
{
int fdt_noffset, cfg_noffset, count;
const void *fit;
const char *fit_uname = NULL;
const char *fit_uname_config = NULL;
char *fit_uname_config_copy = NULL;
char *next_config = NULL;
ulong load, len;
#ifdef CONFIG_OF_LIBFDT_OVERLAY
ulong image_start, image_end;
ulong ovload, ovlen;
const char *uconfig;
const char *uname;
void *base, *ov;
int i, err, noffset, ov_noffset;
#endif
fit_uname = fit_unamep ? *fit_unamep : NULL;
if (fit_uname_configp && *fit_uname_configp) {
fit_uname_config_copy = strdup(*fit_uname_configp);
if (!fit_uname_config_copy)
return -ENOMEM;
next_config = strchr(fit_uname_config_copy, '#');
if (next_config)
*next_config++ = '\0';
if (next_config - 1 > fit_uname_config_copy)
fit_uname_config = fit_uname_config_copy;
}
fdt_noffset = fit_image_load(images,
addr, &fit_uname, &fit_uname_config,
arch, IH_TYPE_FLATDT,
BOOTSTAGE_ID_FIT_FDT_START,
FIT_LOAD_OPTIONAL, &load, &len);
if (fdt_noffset < 0)
goto out;
debug("fit_uname=%s, fit_uname_config=%s\n",
fit_uname ? fit_uname : "<NULL>",
fit_uname_config ? fit_uname_config : "<NULL>");
fit = map_sysmem(addr, 0);
cfg_noffset = fit_conf_get_node(fit, fit_uname_config);
/* single blob, or error just return as well */
count = fit_conf_get_prop_node_count(fit, cfg_noffset, FIT_FDT_PROP);
if (count <= 1 && !next_config)
goto out;
/* we need to apply overlays */
#ifdef CONFIG_OF_LIBFDT_OVERLAY
image_start = addr;
image_end = addr + fit_get_size(fit);
/* verify that relocation took place by load address not being in fit */
if (load >= image_start && load < image_end) {
/* check is simplified; fit load checks for overlaps */
printf("Overlayed FDT requires relocation\n");
fdt_noffset = -EBADF;
goto out;
}
base = map_sysmem(load, len);
/* apply extra configs in FIT first, followed by args */
for (i = 1; ; i++) {
if (i < count) {
noffset = fit_conf_get_prop_node_index(fit, cfg_noffset,
FIT_FDT_PROP, i);
uname = fit_get_name(fit, noffset, NULL);
uconfig = NULL;
} else {
if (!next_config)
break;
uconfig = next_config;
next_config = strchr(next_config, '#');
if (next_config)
*next_config++ = '\0';
uname = NULL;
/*
* fit_image_load() would load the first FDT from the
* extra config only when uconfig is specified.
* Check if the extra config contains multiple FDTs and
* if so, load them.
*/
cfg_noffset = fit_conf_get_node(fit, uconfig);
i = 0;
count = fit_conf_get_prop_node_count(fit, cfg_noffset,
FIT_FDT_PROP);
}
debug("%d: using uname=%s uconfig=%s\n", i, uname, uconfig);
ov_noffset = fit_image_load(images,
addr, &uname, &uconfig,
arch, IH_TYPE_FLATDT,
BOOTSTAGE_ID_FIT_FDT_START,
FIT_LOAD_REQUIRED, &ovload, &ovlen);
if (ov_noffset < 0) {
printf("load of %s failed\n", uname);
continue;
}
debug("%s loaded at 0x%08lx len=0x%08lx\n",
uname, ovload, ovlen);
ov = map_sysmem(ovload, ovlen);
base = map_sysmem(load, len + ovlen);
err = fdt_open_into(base, base, len + ovlen);
if (err < 0) {
printf("failed on fdt_open_into\n");
fdt_noffset = err;
goto out;
}
/* the verbose method prints out messages on error */
err = fdt_overlay_apply_verbose(base, ov);
if (err < 0) {
fdt_noffset = err;
goto out;
}
fdt_pack(base);
len = fdt_totalsize(base);
}
#else
printf("config with overlays but CONFIG_OF_LIBFDT_OVERLAY not set\n");
fdt_noffset = -EBADF;
#endif
out:
if (datap)
*datap = load;
if (lenp)
*lenp = len;
if (fit_unamep)
*fit_unamep = fit_uname;
if (fit_uname_configp)
*fit_uname_configp = fit_uname_config;
if (fit_uname_config_copy)
free(fit_uname_config_copy);
return fdt_noffset;
}
#endif