Change name to fdtextract.

.gitignore

-dumpimage
+fdtextract
 *.o
 .built
 .built_check
@@ -7,3 +7,4 @@ dumpimage
 .git_update
 .prepared_*
 .pkgdir
+ipkg-arm_xscale

Makefile

@@ -7,10 +7,10 @@ CFLAGS += -Wextra -std=gnu99
 
 LIBS += -lfdt
 
-dumpimage: dumpimage.o util.o
+fdtextract: fdtextract.o util.o
 	$(CC) $(CFLAGS) $(INCLUDE_PATHS) -o $@ $^ $(LIBS)
 
 clean:
 	rm -rf *.o
-	rm -rf dumpimage
+	rm -rf fdtextract
 

README.md

 Command to extract sub images from FIT images.
 
-Dump Images
-In the same way that FIT images are generated, the containing sub images can be extracted as well using dumpimage tool.
-The image header files can be listed with the following command:
+The sub images of the FIT image can be extracted using the fdtextract
+tool.
 
-dumpimage -l image.itb
+Usage: fdtextract [options] <file>
 
-FIT description: U-Boot fitImage for plnx_aarch64 kernel
-Created:         Thu Sep 14 17:05:07 2017
- Image 0 (kernel@0)
-  Description:  Linux Kernel
-  Created:      Thu Sep 14 17:05:07 2017
-  Type:         Kernel Image
-  Compression:  uncompressed
-  Data Size:    12263936 Bytes = 11976.50 kB = 11.70 MB
-  Architecture: AArch64
-  OS:           Linux
-  Load Address: 0x00080000
-  Entry Point:  0x00080000
-  Hash algo:    sha1
-  Hash value:   7e1178ec42f6ae6e39275a04234b0c7d73140f2a
- Image 1 (fdt@0)
-  Description:  Flattened Device Tree blob
-  Created:      Thu Sep 14 17:05:07 2017
-  Type:         Flat Device Tree
-  Compression:  uncompressed
-  Data Size:    30150 Bytes = 29.44 kB = 0.03 MB
-  Architecture: AArch64
-  Hash algo:    sha1
-  Hash value:   7f6bd3d535b8b214df392ffd6b2b2bcea058a485
- Image 2 (ramdisk@0)
-  Description:  ramdisk
-  Created:      Thu Sep 14 17:05:07 2017
-  Type:         RAMDisk Image
-  Compression:  uncompressed
-  Data Size:    23563776 Bytes = 23011.50 kB = 22.47 MB
-  Architecture: AArch64
-  OS:           Linux
-  Load Address: unavailable
-  Entry Point:  unavailable
-  Hash algo:    sha1
-  Hash value:   c4f32910b03776481e2997e6e86a1a1d26f33a8f
- Default Configuration: 'conf@1'
- Configuration 0 (conf@1)
-  Description:  Boot Linux kernel with FDT blob + ramdisk
-  Kernel:       kernel@0
-  Init Ramdisk: ramdisk@0
-  FDT:          fdt@0
+Options: -[le:o:hV]
+  -l, --list          List images embedded in FIT
+  -e, --extract <arg> Extract image from FIT
+  -o, --out <arg>     Outpute image name
+  -h, --help          Print this help and exit
+  -V, --version       Print version and exit
 
 
-An image can be extracted from the ITB using the following command:
+The image header files can be listed with the following
+command:
 
-dumpimage -T flat_dt -p 1 -i image.itb outputfile
+fdtextract -l /tmp/last.pkgtb
+[0]: bootfs_6858_b0+
+[1]: nand_squashfs
 
-Extracted:
- Image 1 (fdt@0)
-  Description:  Flattened Device Tree blob
-  Created:      Thu Sep 14 17:05:07 2017
-  Type:         Flat Device Tree
-  Compression:  uncompressed
-  Data Size:    30150 Bytes = 29.44 kB = 0.03 MB
-  Architecture: AArch64
-  Hash algo:    sha1
-  Hash value:   7f6bd3d535b8b214df392ffd6b2b2bcea058a485
+An image can be extracted from the FIT using the following command:
+
+fdtextract -e bootfs_6858_b0+ /tmp/last.pkgtb -o /tmp/bootfs
+Extracting: bootfs_6858_b0+ to /tmp/bootfs

dumpimage.c → fdtextract.c

@@ -38,7 +38,7 @@
 #define MAX_PATH_LEN 100
 
 /* Usage related data. */
-static const char usage_synopsis[] = "dumpimage [options] <file>";
+static const char usage_synopsis[] = "fdtextract [options] <file>";
 static const char usage_short_opts[] = "le:o:" USAGE_COMMON_SHORT_OPTS;
 static struct option const usage_long_opts[] = {
     {"list",            no_argument, NULL, 'l'},