#include "mkimage.h"
#include <bootm.h>
+#include <fdt_region.h>
#include <image.h>
#include <version.h>
{
const char *node_name;
char *algo_name;
+ const char *padding_name;
node_name = fit_get_name(fit, noffset, NULL);
if (fit_image_hash_get_algo(fit, noffset, &algo_name)) {
return -1;
}
+ padding_name = fdt_getprop(fit, noffset, "padding", NULL);
+
memset(info, '\0', sizeof(*info));
info->keydir = keydir;
- info->keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
+ info->keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL);
info->fit = fit;
info->node_offset = noffset;
info->name = strdup(algo_name);
info->checksum = image_get_checksum_algo(algo_name);
info->crypto = image_get_crypto_algo(algo_name);
+ info->padding = image_get_padding_algo(padding_name);
info->require_keys = require_keys;
info->engine_id = engine_id;
if (!info->checksum || !info->crypto) {
free(value);
/* Get keyname again, as FDT has changed and invalidated our pointer */
- info.keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
+ info.keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL);
/*
* Write the public key into the supplied FDT file; this might fail
return 0;
}
+static int fit_image_read_data(char *filename, unsigned char *data,
+ int expected_size)
+{
+ struct stat sbuf;
+ int fd, ret = -1;
+ ssize_t n;
+
+ /* Open file */
+ fd = open(filename, O_RDONLY | O_BINARY);
+ if (fd < 0) {
+ printf("Can't open file %s (err=%d => %s)\n",
+ filename, errno, strerror(errno));
+ return -1;
+ }
+
+ /* Compute file size */
+ if (fstat(fd, &sbuf) < 0) {
+ printf("Can't fstat file %s (err=%d => %s)\n",
+ filename, errno, strerror(errno));
+ goto err;
+ }
+
+ /* Check file size */
+ if (sbuf.st_size != expected_size) {
+ printf("File %s don't have the expected size (size=%lld, expected=%d)\n",
+ filename, (long long)sbuf.st_size, expected_size);
+ goto err;
+ }
+
+ /* Read data */
+ n = read(fd, data, sbuf.st_size);
+ if (n < 0) {
+ printf("Can't read file %s (err=%d => %s)\n",
+ filename, errno, strerror(errno));
+ goto err;
+ }
+
+ /* Check that we have read all the file */
+ if (n != sbuf.st_size) {
+ printf("Can't read all file %s (read %zd bytes, expexted %lld)\n",
+ filename, n, (long long)sbuf.st_size);
+ goto err;
+ }
+
+ ret = 0;
+
+err:
+ close(fd);
+ return ret;
+}
+
+static int get_random_data(void *data, int size)
+{
+ unsigned char *tmp = data;
+ struct timespec date;
+ int i, ret = 0;
+
+ if (!tmp) {
+ printf("%s: pointer data is NULL\n", __func__);
+ ret = -1;
+ goto out;
+ }
+
+ ret = clock_gettime(CLOCK_MONOTONIC, &date);
+ if (ret < 0) {
+ printf("%s: clock_gettime has failed (err=%d, str=%s)\n",
+ __func__, ret, strerror(errno));
+ goto out;
+ }
+
+ srandom(date.tv_nsec);
+
+ for (i = 0; i < size; i++) {
+ *tmp = random() & 0xff;
+ tmp++;
+ }
+
+ out:
+ return ret;
+}
+
+static int fit_image_setup_cipher(struct image_cipher_info *info,
+ const char *keydir, void *fit,
+ const char *image_name, int image_noffset,
+ int noffset)
+{
+ char *algo_name;
+ char filename[128];
+ int ret = -1;
+
+ if (fit_image_cipher_get_algo(fit, noffset, &algo_name)) {
+ printf("Can't get algo name for cipher in image '%s'\n",
+ image_name);
+ goto out;
+ }
+
+ info->keydir = keydir;
+
+ /* Read the key name */
+ info->keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL);
+ if (!info->keyname) {
+ printf("Can't get key name for cipher in image '%s'\n",
+ image_name);
+ goto out;
+ }
+
+ /*
+ * Read the IV name
+ *
+ * If this property is not provided then mkimage will generate
+ * a random IV and store it in the FIT image
+ */
+ info->ivname = fdt_getprop(fit, noffset, "iv-name-hint", NULL);
+
+ info->fit = fit;
+ info->node_noffset = noffset;
+ info->name = algo_name;
+
+ info->cipher = image_get_cipher_algo(algo_name);
+ if (!info->cipher) {
+ printf("Can't get algo for cipher '%s'\n", image_name);
+ goto out;
+ }
+
+ /* Read the key in the file */
+ snprintf(filename, sizeof(filename), "%s/%s%s",
+ info->keydir, info->keyname, ".bin");
+ info->key = malloc(info->cipher->key_len);
+ if (!info->key) {
+ printf("Can't allocate memory for key\n");
+ ret = -1;
+ goto out;
+ }
+ ret = fit_image_read_data(filename, (unsigned char *)info->key,
+ info->cipher->key_len);
+ if (ret < 0)
+ goto out;
+
+ info->iv = malloc(info->cipher->iv_len);
+ if (!info->iv) {
+ printf("Can't allocate memory for iv\n");
+ ret = -1;
+ goto out;
+ }
+
+ if (info->ivname) {
+ /* Read the IV in the file */
+ snprintf(filename, sizeof(filename), "%s/%s%s",
+ info->keydir, info->ivname, ".bin");
+ ret = fit_image_read_data(filename, (unsigned char *)info->iv,
+ info->cipher->iv_len);
+ } else {
+ /* Generate an ramdom IV */
+ ret = get_random_data((void *)info->iv, info->cipher->iv_len);
+ }
+
+ out:
+ return ret;
+}
+
+int fit_image_write_cipher(void *fit, int image_noffset, int noffset,
+ const void *data, size_t size,
+ unsigned char *data_ciphered, int data_ciphered_len)
+{
+ int ret = -1;
+
+ /* Replace data with ciphered data */
+ ret = fdt_setprop(fit, image_noffset, FIT_DATA_PROP,
+ data_ciphered, data_ciphered_len);
+ if (ret == -FDT_ERR_NOSPACE) {
+ ret = -ENOSPC;
+ goto out;
+ }
+ if (ret) {
+ printf("Can't replace data with ciphered data (err = %d)\n", ret);
+ goto out;
+ }
+
+ /* add non ciphered data size */
+ ret = fdt_setprop_u32(fit, image_noffset, "data-size-unciphered", size);
+ if (ret == -FDT_ERR_NOSPACE) {
+ ret = -ENOSPC;
+ goto out;
+ }
+ if (ret) {
+ printf("Can't add unciphered data size (err = %d)\n", ret);
+ goto out;
+ }
+
+ out:
+ return ret;
+}
+
+static int
+fit_image_process_cipher(const char *keydir, void *keydest, void *fit,
+ const char *image_name, int image_noffset,
+ int node_noffset, const void *data, size_t size,
+ const char *cmdname)
+{
+ struct image_cipher_info info;
+ unsigned char *data_ciphered = NULL;
+ int data_ciphered_len;
+ int ret;
+
+ memset(&info, 0, sizeof(info));
+
+ ret = fit_image_setup_cipher(&info, keydir, fit, image_name,
+ image_noffset, node_noffset);
+ if (ret)
+ goto out;
+
+ ret = info.cipher->encrypt(&info, data, size,
+ &data_ciphered, &data_ciphered_len);
+ if (ret)
+ goto out;
+
+ /*
+ * Write the public key into the supplied FDT file; this might fail
+ * several times, since we try signing with successively increasing
+ * size values
+ * And, if needed, write the iv in the FIT file
+ */
+ if (keydest) {
+ ret = info.cipher->add_cipher_data(&info, keydest, fit, node_noffset);
+ if (ret) {
+ printf("Failed to add verification data for cipher '%s' in image '%s'\n",
+ info.keyname, image_name);
+ goto out;
+ }
+ }
+
+ ret = fit_image_write_cipher(fit, image_noffset, node_noffset,
+ data, size,
+ data_ciphered, data_ciphered_len);
+
+ out:
+ free(data_ciphered);
+ free((void *)info.key);
+ free((void *)info.iv);
+ return ret;
+}
+
+int fit_image_cipher_data(const char *keydir, void *keydest,
+ void *fit, int image_noffset, const char *comment,
+ int require_keys, const char *engine_id,
+ const char *cmdname)
+{
+ const char *image_name;
+ const void *data;
+ size_t size;
+ int cipher_node_offset, len;
+
+ /* Get image name */
+ image_name = fit_get_name(fit, image_noffset, NULL);
+ if (!image_name) {
+ printf("Can't get image name\n");
+ return -1;
+ }
+
+ /* Get image data and data length */
+ if (fit_image_get_data(fit, image_noffset, &data, &size)) {
+ printf("Can't get image data/size\n");
+ return -1;
+ }
+
+ /*
+ * Don't cipher ciphered data.
+ *
+ * If the data-size-unciphered property is present the data for this
+ * image is already encrypted. This is important as 'mkimage -F' can be
+ * run multiple times on a FIT image.
+ */
+ if (fdt_getprop(fit, image_noffset, "data-size-unciphered", &len))
+ return 0;
+ if (len != -FDT_ERR_NOTFOUND) {
+ printf("Failure testing for data-size-unciphered\n");
+ return -1;
+ }
+
+ /* Process cipher node if present */
+ cipher_node_offset = fdt_subnode_offset(fit, image_noffset,
+ FIT_CIPHER_NODENAME);
+ if (cipher_node_offset == -FDT_ERR_NOTFOUND)
+ return 0;
+ if (cipher_node_offset < 0) {
+ printf("Failure getting cipher node\n");
+ return -1;
+ }
+ if (!IMAGE_ENABLE_ENCRYPT || !keydir)
+ return 0;
+ return fit_image_process_cipher(keydir, keydest, fit, image_name,
+ image_noffset, cipher_node_offset, data, size, cmdname);
+}
+
/**
* fit_image_add_verification_data() - calculate/set verig. data for image node
*
return -ENOMSG;
}
+ /* Add this image's cipher node if present */
+ noffset = fdt_subnode_offset(fit, image_noffset,
+ FIT_CIPHER_NODENAME);
+ if (noffset != -FDT_ERR_NOTFOUND) {
+ if (noffset < 0) {
+ printf("Failed to get cipher node in configuration '%s/%s' image '%s': %s\n",
+ conf_name, sig_name, iname,
+ fdt_strerror(noffset));
+ return -EIO;
+ }
+ ret = fdt_get_path(fit, noffset, path, sizeof(path));
+ if (ret < 0)
+ goto err_path;
+ if (strlist_add(node_inc, path))
+ goto err_mem;
+ }
+
image_count++;
}
free(region_prop);
/* Get keyname again, as FDT has changed and invalidated our pointer */
- info.keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
+ info.keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL);
/* Write the public key into the supplied FDT file */
if (keydest) {
return 0;
}
+int fit_cipher_data(const char *keydir, void *keydest, void *fit,
+ const char *comment, int require_keys,
+ const char *engine_id, const char *cmdname)
+{
+ int images_noffset;
+ int noffset;
+ int ret;
+
+ /* 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 images_noffset;
+ }
+
+ /* Process its subnodes, print out component images details */
+ for (noffset = fdt_first_subnode(fit, images_noffset);
+ noffset >= 0;
+ noffset = fdt_next_subnode(fit, noffset)) {
+ /*
+ * Direct child node of the images parent node,
+ * i.e. component image node.
+ */
+ ret = fit_image_cipher_data(keydir, keydest,
+ fit, noffset, comment,
+ require_keys, engine_id,
+ cmdname);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
int fit_add_verification_data(const char *keydir, void *keydest, void *fit,
const char *comment, int require_keys,
const char *engine_id, const char *cmdname)
}
#ifdef CONFIG_FIT_SIGNATURE
-int fit_check_sign(const void *fit, const void *key)
+int fit_check_sign(const void *fit, const void *key,
+ const char *fit_uname_config)
{
int cfg_noffset;
int ret;
- cfg_noffset = fit_conf_get_node(fit, NULL);
+ cfg_noffset = fit_conf_get_node(fit, fit_uname_config);
if (!cfg_noffset)
return -1;
- printf("Verifying Hash Integrity ... ");
+ printf("Verifying Hash Integrity for node '%s'... ",
+ fdt_get_name(fit, cfg_noffset, NULL));
ret = fit_config_verify(fit, cfg_noffset);
if (ret)
return ret;
+ printf("Verified OK, loading images\n");
ret = bootm_host_load_images(fit, cfg_noffset);
return ret;
projects / platform / kernel / u-boot.git / blobdiff