[PATCH 3/5] x86: edison: Align U-Boot via binman to fix the boot

[Tom Rini]

On Sun, Jun 07, 2026 at 05:05:12PM -0600, Simon Glass wrote:

> The mask ROM loads the OS image to 0x01100000 but enters it at
> 0x01101000, so U-Boot must sit 0x1000 (4KB) into the loaded image. This
> was arranged by board/intel/edison/config.mk, which prepended 4096 zero
> bytes to u-boot.bin through an 'INPUTS-y += u-boot-align.bin' rule whose
> recipe moved its output back over u-boot.bin.
> 
> Commit bd3f9ee679b4 ("kbuild: Bump the build system to 6.1") stopped
> that rule from running, so u-boot.bin no longer gains the 4KB prefix.
> The mask ROM then jumps 4KB into U-Boot's code and the board never
> starts, sitting in BootROM download mode (DnX) and cycling.
> 
> Since the Edison image is assembled by binman, provide the gap there
> instead: pad with a 'fill' of 4096 zero bytes ahead of the u-boot entry.
> Drop the now-redundant alignment hack from the board config.mk.
> 
> Fixes: bd3f9ee679b4 ("kbuild: Bump the build system to 6.1")
> Signed-off-by: Simon Glass <sjg at chromium.org>

That's an unintentional behavior change we should understand why
happened, and then do whatever needs to be done to fix it, so that other
platforms that might have been in a similar spot can also be fixed.

-- 
Tom
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