Re: blspec

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Hello Alexander,

On 4/10/26 4:02 PM, Alexander Shiyan wrote:
> Hello All.
> 
> Can anyone explain how to use the built-in blspec support?
> I would like to try setting up booting via exlinux.conf...

exlinux.conf and bootloader spec are different formats.

Here's a bootloader spec example:

  $ cat /loader/entries/imx8mp-evk.conf
  title           PTXdist - Pengutronix-DistroKit imx8mp-evk
  version         6.18
  options         rootwait
  linux           /boot/Image
  devicetree      /boot/imx8mp-evk.dtb
  linux-appendroot        true


You can have multiple files under /loader/entries and barebox will
iterate over them, extract the compatible of the referenced devicetree,
compare it against its own and then decide what to boot.

The linux-appendroot key is barebox-specific and means barebox should
fixup root= according to the device it found the bootloader spec file
on. This is useful for the case where the bootloader spec files are
directly in the rootfs and not in a separate partition.

Cheers,
Ahmad



> 
> Thanks!
> 
> 

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