Hello,
I was learning about signed FIT today and was unable to convince mkimage to produce a signature node in my control device tree. It turns out that Debian's packaged mkimage doesn't enable FIT_SIGNATURE, so the options I was passing were silently ignored.
There's an existing Debian bug for that[1] but in the mean time this changes mkimage's behaviour to fail loudly when FIT_SIGNATURE is disabled.
The first two patches fix some issues I found when testing the third patch under sandbox_defconfig with FIT_SIGNATURE=n.
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972513
Joel Stanley (3): tools/Makefile: FIT_CIPHER requires libssl image-cipher: Fix FIT_CIPHER linking mkimge: Reject signing-related flags without FIT_SIGNATURE
common/image-cipher.c | 14 ++++++++++++++ tools/Makefile | 2 +- tools/mkimage.c | 9 +++++++-- 3 files changed, 22 insertions(+), 3 deletions(-)