[Buildroot] [RFC/PATCH] linux: remove the zImage before rebuild
thomas.petazzoni at free-electrons.com
Sun Mar 8 17:47:30 UTC 2015
Dear Guido Martínez,
On Fri, 26 Sep 2014 20:22:54 -0300, Guido Martínez wrote:
> Currently, if we run "make linux-rebuild", the device tree blob gets
> appended twice to the kernel image, rendering the latter append useless.
> Fix this by removing the zImage before building, so the DTB append runs
> on a fresh kernel image. This is not optimal as the final Linux linking
> step is run again, but at least we get sensible results.
> Signed-off-by: Guido Martínez <guido at vanguardiasur.com.ar>
First of all, sorry for the slow response. I could indeed reproduce the
However, I am not entirely happy with the solution you proposed. I'd
prefer to fix the real problem: the fact that we are overwriting the
kernel zImage file.
I believe we should rather concatenate zImage and the DTB into a file
named maybe zImage.appended-dtb or something like that, and install
this file to $(BINARIES_DIR) and $(TARGET_DIR)/boot/ (if requested).
Or, another possibility is to name the file zImage.<name-of-dtb>, which
would later on allow to generate multiple zImage with various appended
Doing this however requires reworking quite a bit the
LINUX_IMAGE_NAME / LINUX_TARGET_NAME logic. Would you be willing to
work on something like this?
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
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