[U-Boot] Question about board-specific Makefile actions

[James Chargin <jimccrown@gmail.com>]

So, is no one willing to offer a hint?

Thanks,
Jim

On 03/03/2015 01:39 PM, James Chargin wrote:
> I have a custom board in a git workspace for U-Boot 2014.07. I've copied
> most of this from the .../board/ti/beagle. My board directory Makefile
> looks like
>
> 8<---
> obj-y := board.o
> 8<---
>
> I'd like to add a few files to this directory that are processed during
> "make all" and have any newly derived files deleted during "make clean".
>
> I've experimented with various Makefile contents but I can't get the new
> files processed or any newly derived files deleted. U-Boot's makefile
> system is quite large for my experience level and it seems I don't have
> enough understanding.
>
> A new file might contain some hush commands that are to be executed from
> the U-Boot command line. I'd like to use "source" to process these
> commands. The "source" command requires that its argument be an image (I
> get this into memory via TFTP), so I'd like "make all" to transform the
> text file containing the hush commands into the image file. I'd also
> like "make clean" to delete the derived image file.
>
> So, if my hush commands are in a text file called test.txt, I'd like
> "make all" to apply mkimage so that a test.img is generated. I'd also
> like "make clean" to delete test.img.
>
> I tried various changes to my Makefile, but the most likely seeming
> changes are
>
> 8<---
> IMG  = test.img
>
> obj-y    := board.o
>
> board.o : $(IMG)
>
> %.img : %.txt
>      $(srctree)/tools/mkimage -T script -n $* -C none -d $< $@
>
> CLEAN_FILES += $(IMG)
> CLEAN_DIRS  += .
> 8<---
>
> This doesn't work, nor has any other approach I've taken. mkimage is
> never run for "make all" and test.img doesn't get deleted if I create a
> fake one and run "make clean"
>
> Could someone offer a solution, either directly, or by pointing at an
> existing board that does something similar?
>
> Thanks
> Jim
>

-- 
Jim Chargin
AJA Video Systems                       jimc at aja.com
(530) 271-3334                          http://www.aja.com