[PATCH] Debug: add Kconfig option to abort autoboot

[Sascha Hauer]

On Tue, Feb 24, 2026 at 04:59:00PM +0100, Jonas Rebmann wrote:
> Hi Sascha,
> 
> On 2026-02-23 16:39, Sascha Hauer wrote:
> > For debugging purposes it's sometimes useful when barebox doesn't boot
> > through, but stops at the prompt.
> 
> Isn't this already compile-time configurable by setting the defaultenv
> autoboot to "abort"?

Yes, it is. It's just easier sometimes to just change a config, at least
for Claude.

Sascha

> 
> Regards,
> Jonas
> 
> > This allows for automated debugging
> > without having to catch the autoboot timeout first. This normally works
> > thanks to labgrid, but at the cost that messages are eaten up by the
> > barebox strategy.
> > 
> > This adds a Kconfig option to just stop at the prompt.
> > 
> > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > ---
> >   common/Kconfig.debug | 6 ++++++
> >   common/startup.c     | 4 +++-
> >   2 files changed, 9 insertions(+), 1 deletion(-)
> > 
> > diff --git a/common/Kconfig.debug b/common/Kconfig.debug
> > index b307b84202..13a686d0ad 100644
> > --- a/common/Kconfig.debug
> > +++ b/common/Kconfig.debug
> > @@ -56,6 +56,12 @@ config DEBUG_INITCALLS
> >   	help
> >   	  If enabled this will print initcall traces.
> > +config DEBUG_AUTOBOOT_ABORT
> > +	bool "Abort autoboot"
> > +	help
> > +	  If enabled barebox will not automatically boot but start a shell
> > +	  instead.
> > +
> >   config DEBUG_PBL
> >   	bool "Print PBL debugging information"
> >   	depends on PBL_CONSOLE
> > diff --git a/common/startup.c b/common/startup.c
> > index 055d94fe6a..7551813a50 100644
> > --- a/common/startup.c
> > +++ b/common/startup.c
> > @@ -189,7 +189,9 @@ void set_autoboot_state(enum autoboot_state autoboot)
> >    */
> >   enum autoboot_state do_autoboot_countdown(void)
> >   {
> > -	static enum autoboot_state autoboot_state = AUTOBOOT_UNKNOWN;
> > +	static enum autoboot_state autoboot_state =
> > +		IS_ENABLED(CONFIG_DEBUG_AUTOBOOT_ABORT) ?
> > +			AUTOBOOT_ABORT : AUTOBOOT_UNKNOWN;
> >   	unsigned flags = CONSOLE_COUNTDOWN_EXTERN;
> >   	int ret;
> >   	struct stat s;
> 
> -- 
> Pengutronix e.K.                           | Jonas Rebmann               |
> Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-9    |
> 

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |