image: Move HOSTCC image code to tools/

This code is never compiled into U-Boot, so move it into a separate
file in tools/ to avoid the large #ifdef.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

1 files changed, 201 insertions, 0 deletions

diff --git a/tools/image-host.c b/tools/image-host.c
new file mode 100644
index 0000000..82b6cee
--- /dev/null
+++ b/tools/image-host.c
@@ -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;
+}