|
@@ -0,0 +1,201 @@
|
|
|
+/*
|
|
|
+ * Copyright (c) 2013, Google Inc.
|
|
|
+ *
|
|
|
+ * (C) Copyright 2008 Semihalf
|
|
|
+ *
|
|
|
+ * (C) Copyright 2000-2006
|
|
|
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
|
+ *
|
|
|
+ * See file CREDITS for list of people who contributed to this
|
|
|
+ * project.
|
|
|
+ *
|
|
|
+ * This program is free software; you can redistribute it and/or
|
|
|
+ * modify it under the terms of the GNU General Public License as
|
|
|
+ * published by the Free Software Foundation; either version 2 of
|
|
|
+ * the License, or (at your option) any later version.
|
|
|
+ *
|
|
|
+ * This program is distributed in the hope that it will be useful,
|
|
|
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
+ * GNU General Public License for more details.
|
|
|
+ *
|
|
|
+ * You should have received a copy of the GNU General Public License
|
|
|
+ * along with this program; if not, write to the Free Software
|
|
|
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
|
+ * MA 02111-1307 USA
|
|
|
+ */
|
|
|
+
|
|
|
+#include "mkimage.h"
|
|
|
+#include <bootstage.h>
|
|
|
+#include <image.h>
|
|
|
+#include <sha1.h>
|
|
|
+#include <time.h>
|
|
|
+#include <u-boot/crc.h>
|
|
|
+#include <u-boot/md5.h>
|
|
|
+
|
|
|
+/**
|
|
|
+ * fit_set_hashes - process FIT component image nodes and calculate hashes
|
|
|
+ * @fit: pointer to the FIT format image header
|
|
|
+ *
|
|
|
+ * fit_set_hashes() adds hash values for all component images in the FIT blob.
|
|
|
+ * Hashes are calculated for all component images which have hash subnodes
|
|
|
+ * with algorithm property set to one of the supported hash algorithms.
|
|
|
+ *
|
|
|
+ * returns
|
|
|
+ * 0, on success
|
|
|
+ * libfdt error code, on failure
|
|
|
+ */
|
|
|
+int fit_set_hashes(void *fit)
|
|
|
+{
|
|
|
+ int images_noffset;
|
|
|
+ int noffset;
|
|
|
+ int ndepth;
|
|
|
+ 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 (ndepth = 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.
|
|
|
+ */
|
|
|
+ ret = fit_image_set_hashes(fit, noffset);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * fit_image_set_hashes - calculate/set hashes for given component image node
|
|
|
+ * @fit: pointer to the FIT format image header
|
|
|
+ * @image_noffset: requested component image node
|
|
|
+ *
|
|
|
+ * fit_image_set_hashes() adds hash values for an component image node. All
|
|
|
+ * existing hash subnodes are checked, if algorithm property is set to one of
|
|
|
+ * the supported hash algorithms, hash value is computed and corresponding
|
|
|
+ * hash node property is set, for example:
|
|
|
+ *
|
|
|
+ * Input component image node structure:
|
|
|
+ *
|
|
|
+ * o image@1 (at image_noffset)
|
|
|
+ * | - data = [binary data]
|
|
|
+ * o hash@1
|
|
|
+ * |- algo = "sha1"
|
|
|
+ *
|
|
|
+ * Output component image node structure:
|
|
|
+ *
|
|
|
+ * o image@1 (at image_noffset)
|
|
|
+ * | - data = [binary data]
|
|
|
+ * o hash@1
|
|
|
+ * |- algo = "sha1"
|
|
|
+ * |- value = sha1(data)
|
|
|
+ *
|
|
|
+ * returns:
|
|
|
+ * 0 on sucess
|
|
|
+ * <0 on failure
|
|
|
+ */
|
|
|
+int fit_image_set_hashes(void *fit, int image_noffset)
|
|
|
+{
|
|
|
+ const void *data;
|
|
|
+ size_t size;
|
|
|
+ char *algo;
|
|
|
+ uint8_t value[FIT_MAX_HASH_LEN];
|
|
|
+ int value_len;
|
|
|
+ int noffset;
|
|
|
+ int ndepth;
|
|
|
+
|
|
|
+ /* 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;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* 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 */
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Check subnode name, must be equal to "hash".
|
|
|
+ * Multiple hash nodes require unique unit node
|
|
|
+ * names, e.g. hash@1, hash@2, etc.
|
|
|
+ */
|
|
|
+ if (strncmp(fit_get_name(fit, noffset, NULL),
|
|
|
+ FIT_HASH_NODENAME,
|
|
|
+ strlen(FIT_HASH_NODENAME)) != 0) {
|
|
|
+ /* Not a hash subnode, skip it */
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (fit_image_hash_get_algo(fit, noffset, &algo)) {
|
|
|
+ printf("Can't get hash algo property for '%s' hash node in '%s' image node\n",
|
|
|
+ fit_get_name(fit, noffset, NULL),
|
|
|
+ fit_get_name(fit, image_noffset, NULL));
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (calculate_hash(data, size, algo, value,
|
|
|
+ &value_len)) {
|
|
|
+ printf("Unsupported hash algorithm (%s) for '%s' hash node in '%s' image node\n",
|
|
|
+ algo, fit_get_name(fit, noffset, NULL),
|
|
|
+ fit_get_name(fit, image_noffset, NULL));
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (fit_image_hash_set_value(fit, noffset, value,
|
|
|
+ value_len)) {
|
|
|
+ printf("Can't set hash value for '%s' hash node in '%s' image node\n",
|
|
|
+ fit_get_name(fit, noffset, NULL),
|
|
|
+ fit_get_name(fit, image_noffset, NULL));
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * fit_image_hash_set_value - set hash value in requested has node
|
|
|
+ * @fit: pointer to the FIT format image header
|
|
|
+ * @noffset: hash node offset
|
|
|
+ * @value: hash value to be set
|
|
|
+ * @value_len: hash value length
|
|
|
+ *
|
|
|
+ * fit_image_hash_set_value() attempts to set hash value in a node at offset
|
|
|
+ * given and returns operation status to the caller.
|
|
|
+ *
|
|
|
+ * returns
|
|
|
+ * 0, on success
|
|
|
+ * -1, on failure
|
|
|
+ */
|
|
|
+int fit_image_hash_set_value(void *fit, int noffset, uint8_t *value,
|
|
|
+ int value_len)
|
|
|
+{
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = fdt_setprop(fit, noffset, FIT_VALUE_PROP, value, value_len);
|
|
|
+ if (ret) {
|
|
|
+ printf("Can't set hash '%s' property for '%s' node(%s)\n",
|
|
|
+ FIT_VALUE_PROP, fit_get_name(fit, noffset, NULL),
|
|
|
+ fdt_strerror(ret));
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|