[Buildroot] [PATCH v4 2/3] Add LINUX_DIR to EXTRA_ENV for use in post-build scripts

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Hello,

On Sat, 18 Mar 2017 14:59:35 +0100, Arnout Vandecappelle wrote:
> > What about instead using BR2_LINUX_KERNEL_VMLINUX_BIN, to get
> > vmlinux.bin copied to output/images, and then compress it in the
> > post-build script ?  
> 
>  I considered that in one of my reviews, but vmlinux.bin doesn't contain the
> load and start address. The post-build script would have to retrieve those in
> some other way.

vmlinux.bin.gz also does not contain the load/start address. Only
uImage does, and they get them from uImage.

So one possibility would be to make the Linux package behave like the
U-Boot package: instead of having a choice...endchoice for the image
format to install, you simply have a list of options so that you can
select several of them.

>  However, Abhimanyu reported that there is upstream support for generating a
> fitImage in the kernel build itself. That's of course preferable...

Yes, it would be much better obviously.

Otherwise, hardcoding the load/start address in the .its.in file is
also good enough, this file is anyway board-specific.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com