When signing an image, it is useful to add some details about which tool
or person is authorising the signing. Add a comment field which can take
care of miscellaneous requirements.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
When signing images it is sometimes necessary to sign with different keys
at different times, or make the signer entirely separate from the FIT
creation to avoid needing the private keys to be publicly available in
the system.
Add a -F option so that key signing can be a separate step, and possibly
done multiple times as different keys are avaiable.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
FIT image verification requires public keys. Add a convenient option to
mkimage to write the public keys to an FDT blob when it uses then for
signing an image. This allows us to use:
mkimage -f test.its -K dest.dtb -k keys test.fit
and have the signatures written to test.fit and the corresponding public
keys written to dest.dtb. Then dest.dtb can be used as the control FDT
for U-Boot (CONFIG_OF_CONTROL), thus providing U-Boot with access to the
public keys it needs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
Keys required for signing images will be in a specific directory. Add a
-k option to specify that directory.
Also update the mkimage man page with this information and a clearer list
of available commands.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de> (v1)
By default, "-" chars are interpreted as hyphens (U+2010) by groff, not
as minus signs (U+002D). Since options to programs use minus signs
(U+002D), this means for example in UTF-8 locales that you cannot cut
and paste options, nor search for them easily.
(Reported by lintian.)
Signed-off-by: Loc Minier <loic.minier@linaro.org>
Some Linux distributions include the "mkimage" as a package.
This commit provides a manual page for mkimage.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Added documentation for FIT images and examples.
Moved to doc/ directory.
Signed-off-by: Wolfgang Denk <wd@denx.de>
