fdt & fit

u-boot-tree/tools/fdt_host.h

+/*
+ * (C) Copyright 2008 Semihalf
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __FDT_HOST_H__
+#define __FDT_HOST_H__
+
+/* Make sure to include u-boot version of libfdt include files */
+#include "../include/libfdt.h"
+#include "../include/fdt_support.h"
+
+/**
+ * fdt_remove_unused_strings() - Remove any unused strings from an FDT
+ *
+ * This creates a new device tree in @new with unused strings removed. The
+ * called can then use fdt_pack() to minimise the space consumed.
+ *
+ * @old:	Old device tree blog
+ * @new:	Place to put new device tree blob, which must be as large as
+ *		@old
+ * @return
+ *	0, on success
+ *	-FDT_ERR_BADOFFSET, corrupt device tree
+ *	-FDT_ERR_NOSPACE, out of space, which should not happen unless there
+ *		is something very wrong with the device tree input
+ */
+int fdt_remove_unused_strings(const void *old, void *new);
+
+int fit_check_sign(const void *working_fdt, const void *key);
+
+#endif /* __FDT_HOST_H__ */

u-boot-tree/tools/fit_check_sign.c

+/*
+ * (C) Copyright 2014
+ * DENX Software Engineering
+ * Heiko Schocher <hs@denx.de>
+ *
+ * Based on:
+ * (C) Copyright 2008 Semihalf
+ *
+ * (C) Copyright 2000-2004
+ * DENX Software Engineering
+ * Wolfgang Denk, wd@denx.de
+ *
+ * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *		FIT image specific code abstracted from mkimage.c
+ *		some functions added to address abstraction
+ *
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "mkimage.h"
+#include "fit_common.h"
+#include <image.h>
+#include <u-boot/crc.h>
+
+void usage(char *cmdname)
+{
+	fprintf(stderr, "Usage: %s -f fit file -k key file\n"
+			 "          -f ==> set fit file which should be checked'\n"
+			 "          -k ==> set key file which contains the key'\n",
+		cmdname);
+	exit(EXIT_FAILURE);
+}
+
+int main(int argc, char **argv)
+{
+	int ffd = -1;
+	int kfd = -1;
+	struct stat fsbuf;
+	struct stat ksbuf;
+	void *fit_blob;
+	char *fdtfile = NULL;
+	char *keyfile = NULL;
+	char cmdname[256];
+	int ret;
+	void *key_blob;
+	int c;
+
+	strncpy(cmdname, *argv, sizeof(cmdname) - 1);
+	cmdname[sizeof(cmdname) - 1] = '\0';
+	while ((c = getopt(argc, argv, "f:k:")) != -1)
+		switch (c) {
+		case 'f':
+			fdtfile = optarg;
+			break;
+		case 'k':
+			keyfile = optarg;
+			break;
+		default:
+			usage(cmdname);
+			break;
+	}
+
+	if (!fdtfile) {
+		fprintf(stderr, "%s: Missing fdt file\n", *argv);
+		usage(*argv);
+	}
+	if (!keyfile) {
+		fprintf(stderr, "%s: Missing key file\n", *argv);
+		usage(*argv);
+	}
+
+	ffd = mmap_fdt(cmdname, fdtfile, 0, &fit_blob, &fsbuf, false);
+	if (ffd < 0)
+		return EXIT_FAILURE;
+	kfd = mmap_fdt(cmdname, keyfile, 0, &key_blob, &ksbuf, false);
+	if (kfd < 0)
+		return EXIT_FAILURE;
+
+	image_set_host_blob(key_blob);
+	ret = fit_check_sign(fit_blob, key_blob);
+	if (!ret) {
+		ret = EXIT_SUCCESS;
+		fprintf(stderr, "Signature check OK\n");
+	} else {
+		ret = EXIT_FAILURE;
+		fprintf(stderr, "Signature check Bad (error %d)\n", ret);
+	}
+
+	(void) munmap((void *)fit_blob, fsbuf.st_size);
+	(void) munmap((void *)key_blob, ksbuf.st_size);
+
+	close(ffd);
+	close(kfd);
+	exit(ret);
+}

u-boot-tree/tools/fit_info.c

+/*
+ * (C) Copyright 2014
+ * DENX Software Engineering
+ * Heiko Schocher <hs@denx.de>
+ *
+ * fit_info: print the offset and the len of a property from
+ *	     node in a fit file.
+ *
+ * Based on:
+ * (C) Copyright 2008 Semihalf
+ *
+ * (C) Copyright 2000-2004
+ * DENX Software Engineering
+ * Wolfgang Denk, wd@denx.de
+ *
+ * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *		FIT image specific code abstracted from mkimage.c
+ *		some functions added to address abstraction
+ *
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "mkimage.h"
+#include "fit_common.h"
+#include <image.h>
+#include <u-boot/crc.h>
+
+void usage(char *cmdname)
+{
+	fprintf(stderr, "Usage: %s -f fit file -n node -p property\n"
+			 "          -f ==> set fit file which is used'\n"
+			 "          -n ==> set node name'\n"
+			 "          -p ==> set property name'\n",
+		cmdname);
+	exit(EXIT_FAILURE);
+}
+
+int main(int argc, char **argv)
+{
+	int ffd = -1;
+	struct stat fsbuf;
+	void *fit_blob;
+	int len;
+	int  nodeoffset;	/* node offset from libfdt */
+	const void *nodep;	/* property node pointer */
+	char *fdtfile = NULL;
+	char *nodename = NULL;
+	char *propertyname = NULL;
+	char cmdname[256];
+	int c;
+
+	strncpy(cmdname, *argv, sizeof(cmdname) - 1);
+	cmdname[sizeof(cmdname) - 1] = '\0';
+	while ((c = getopt(argc, argv, "f:n:p:")) != -1)
+		switch (c) {
+		case 'f':
+			fdtfile = optarg;
+			break;
+		case 'n':
+			nodename = optarg;
+			break;
+		case 'p':
+			propertyname = optarg;
+			break;
+		default:
+			usage(cmdname);
+			break;
+		}
+
+	if (!fdtfile) {
+		fprintf(stderr, "%s: Missing fdt file\n", *argv);
+		usage(*argv);
+	}
+	if (!nodename) {
+		fprintf(stderr, "%s: Missing node name\n", *argv);
+		usage(*argv);
+	}
+	if (!propertyname) {
+		fprintf(stderr, "%s: Missing property name\n", *argv);
+		usage(*argv);
+	}
+	ffd = mmap_fdt(cmdname, fdtfile, 0, &fit_blob, &fsbuf, false);
+
+	if (ffd < 0) {
+		printf("Could not open %s\n", fdtfile);
+		exit(EXIT_FAILURE);
+	}
+
+	nodeoffset = fdt_path_offset(fit_blob, nodename);
+	if (nodeoffset < 0) {
+		printf("%s not found.", nodename);
+		exit(EXIT_FAILURE);
+	}
+	nodep = fdt_getprop(fit_blob, nodeoffset, propertyname, &len);
+	if (len == 0) {
+		printf("len == 0 %s\n", propertyname);
+		exit(EXIT_FAILURE);
+	}
+
+	printf("NAME: %s\n", fit_get_name(fit_blob, nodeoffset, NULL));
+	printf("LEN: %d\n", len);
+	printf("OFF: %d\n", (int)(nodep - fit_blob));
+	(void) munmap((void *)fit_blob, fsbuf.st_size);
+
+	close(ffd);
+	exit(EXIT_SUCCESS);
+}