tools, fit: add fit_info host command

add fit_info command to the host tools. This command prints
the name, offset and the len from a property from a node in
a fit file. This info can be used to extract a properties
data with linux tools, for example "dd".

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 96 insertions, 0 deletions

diff --git a/tools/fit_info.c b/tools/fit_info.c
new file mode 100644
index 00000000000..50f3c8edf12
--- /dev/null
+++ b/tools/fit_info.c
@@ -0,0 +1,96 @@
+/*
+ * (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[50];
+	int c;
+
+	strcpy(cmdname, *argv);
+	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;
+		}
+
+	ffd = mmap_fdt(cmdname, fdtfile, &fit_blob, &fsbuf, 0);
+
+	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);
+}