This tool seems a bit underloved. Unfortunately, it seems to be missing support for FIT images. Alas...
Add a man page documenting it. The example is taken from commit a804b5ce2d ("Add dumpimage, a tool to extract data from U-Boot images").
Signed-off-by: Sean Anderson seanga2@gmail.com ---
doc/dumpimage.1 | 103 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 doc/dumpimage.1
diff --git a/doc/dumpimage.1 b/doc/dumpimage.1 new file mode 100644 index 0000000000..021ab210b8 --- /dev/null +++ b/doc/dumpimage.1 @@ -0,0 +1,103 @@ +.TH DUMPIMAGE 1 2022-06-11 U-Boot +" SPDX-License-Identifier: GPL-2.0 +" Copyright (C) 2022 Sean Anderson seanga2@gmail.com +.SH NAME +dumpimage - extract data from U-Boot images +. +.SH SYNOPSIS +.SY dumpimage +.OP -T type +.BI -l~ image +.YS +.SY dumpimage +.OP -T type +.OP -p position +.BI -o~ outfile +.I image +.YS +.SY dumpimage +.B -h +.YS +.SY dumpimage +.B -V +.YS +. +.SH DESCRIPTION +.B dumpimage +lists and extracts data from U-Boot images. If +.B -l +is specified, +.B dumpimage +lists the components in +.IR image . +Otherwise, +.B dumpimage +extracts the component at +.IR position " to " outfile . +. +.SH OPTIONS +.TP +.B -h +Print usage information and exit. +. +.TP +.B -l +Print the header information for +.IR image , +including a list of components. +. +.TP +.BI -o " outfile" +The file to write the dumped component to. +.TP +.BI -p " position" +Specify the +.I position +of the component to dump. This should be a numeric index, starting at 0. If not +specified, the default +.I position +is 0. +. +.TP +.BI -T " type" +Specify the +.I type +of the image. If not specified, the image type will be automatically detected. A +list of supported image types may be printed by running +.BR "mkimage~-T~list" . +. +.TP +.B -V +Print version information and exit. +. +.SH BUGS +Please report bugs to the +.UR https://%5C:source%5C:.denx%5C:.de/%5C:u-boot/%5C:u-boot/%5C:issues +U-Boot bug tracker +.UE . +.SH EXAMPLES +Create a multi-file image and then extract part of that image +.PP +.EX +.in +4 +$ \c +.B mkimage -A x86 -O linux -T multi -n x86 \\& +.in +4 +.B -d vmlinuz:initrd.img:System.map multi.img +.in +Image Name: x86 +Created: Thu Jul 25 10:29:13 2013 +Image Type: Intel x86 Linux Multi-File Image (gzip compressed) +Data Size: 13722956 Bytes = 13401.32 kB = 13.09 MB +Load Address: 00000000 +Entry Point: 00000000 +Contents: + Image 0: 4040128 Bytes = 3945.44 kB = 3.85 MB + Image 1: 7991719 Bytes = 7804.41 kB = 7.62 MB + Image 2: 1691092 Bytes = 1651.46 kB = 1.61 MB +$ \c +.B dumpimage -p 2 -o System.map multi.img +.EE +.in +.SH SEE ALSO +.BR mkimage (1)