mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Matthias Fend <>
To: Sascha Hauer <>
Subject: Re: One barebox image for multiple boards
Date: Fri, 13 May 2022 14:10:32 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Hi Sascha,

Am 13.05.2022 um 13:00 schrieb Sascha Hauer:
> Hi Matthias,
> On Fri, May 13, 2022 at 10:55:02AM +0200, Matthias Fend wrote:
>> Hi,
>> I'm looking for a solution to support multiple boards with just one barebox
>> image. The few core components that are relevant for barebox are the same on
>> all boards, so that the same barebox image runs on all boards. It is
>> possible to dynamically detect the board type inside barebox, but as this
>> requires some infrastructure it is not possible during lowlevel init. So
>> basically Barebox should boot with a minimal core device tree, detect the
>> board type and then use the corresponding device tree of the detected board.
>> Something similar to arch/arm/boards/stm32mp15xx-dkx/lowlevel.c but not at
>> low level.
> Do you even need the full device tree in barebox? The minimal core
> device tree might be enough for barebox and only the kernel is then
> booted with the full device tree.

If there is no trick to changing the used device tree at boardlevel 
init, then this might be a possibility.
The core device tree might not be as minimal then and in exceptional 
cases minor fixups in the board code will be needed, but I think it 
could work.

In such a case, how should one ensure that the appropriate blspec entry 
is booted? Maybe by simply replacing/updating the compatible string in 
the live device tree after the board was detected?


> Sascha

barebox mailing list

  reply	other threads:[~2022-05-13 12:12 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-13  8:55 Matthias Fend
2022-05-13 10:30 ` Sam Ravnborg
2022-05-13 12:08   ` Matthias Fend
2022-05-13 12:20     ` Ahmad Fatoum
2022-05-13 18:02       ` Trent Piepho
2022-05-13 12:23     ` Sascha Hauer
2022-05-13 11:00 ` Sascha Hauer
2022-05-13 12:10   ` Matthias Fend [this message]
2022-05-16  8:07     ` Sascha Hauer
2022-05-19  9:25       ` Matthias Fend

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \
    --subject='Re: One barebox image for multiple boards' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox