blspec - autoboot + timeout/default

blspec - autoboot + timeout/default

[Frank Wunderlich]

Hi,

can i boot directly to blspec-menu (boot -m sd.1) with setting in default env and boot a specific entry (by title/filename) after some time (e.g.3-5 sec)?

i have defined some blspec files in /mnt/sd.1/loader/entries/ and i want to show the menu by default and after some time the entry from specific file should be booted. this gives user the possibility to modify this conf to define his kernel for autoboot in headless mode.

i tried to modify defaultenv/nv/boot.default, but this needs filenames in /env/boot, no commands and if i use a script, it cannot start the "boot -m sd.1" because the /env/boot scripts run bootm (tried loading barebox with such script - ended with putting a separate script in /env/bin/)

btw. is there a way to load environment from a txt file from a specific partition (similar to uboots uEnv.txt)?

regards Frank


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Re: blspec - autoboot + timeout/default

[Sascha Hauer]

On Sat, Feb 05, 2022 at 03:58:54PM +0100, Frank Wunderlich wrote:
> Hi,
> 
> can i boot directly to blspec-menu (boot -m sd.1) with setting in
> default env and boot a specific entry (by title/filename) after some
> time (e.g.3-5 sec)?

There is a -t <secs> option to the boot command. It seems however that
there is no possibility to select a specfic entry beforehand. The first
one would be booted.

> 
> i have defined some blspec files in /mnt/sd.1/loader/entries/ and i
> want to show the menu by default and after some time the entry from
> specific file should be booted. this gives user the possibility to
> modify this conf to define his kernel for autoboot in headless mode.
> 
> i tried to modify defaultenv/nv/boot.default, but this needs filenames
> in /env/boot, no commands and if i use a script, it cannot start the
> "boot -m sd.1" because the /env/boot scripts run bootm (tried loading
> barebox with such script - ended with putting a separate script in
> /env/bin/)

It should work by setting:

nv boot.default=myboot

With /env/boot/myboot:

#!/bin/sh

boot -m sd.1 -t 3

> 
> btw. is there a way to load environment from a txt file from a
> specific partition (similar to uboots uEnv.txt)?

The barebox environment is a directory tree rather than a list of
variables, so there is no way to load a text file as environment.
There is the loadenv command which takes the path to an environment
image as argument. You can generate such an image on the host
with the bareboxenv tool and then load it under barebox with loadenv.

Sascha

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Aw: Re: blspec - autoboot + timeout/default

[Frank Wunderlich]

Hi

> Gesendet: Montag, 07. Februar 2022 um 09:59 Uhr
> Von: "Sascha Hauer" <sha@pengutronix.de>
> An: "Frank Wunderlich" <frank-w@public-files.de>
> Cc: barebox@lists.infradead.org
> Betreff: Re: blspec - autoboot + timeout/default
>
> On Sat, Feb 05, 2022 at 03:58:54PM +0100, Frank Wunderlich wrote:
> > Hi,
> >
> > can i boot directly to blspec-menu (boot -m sd.1) with setting in
> > default env and boot a specific entry (by title/filename) after some
> > time (e.g.3-5 sec)?
>
> There is a -t <secs> option to the boot command. It seems however that
> there is no possibility to select a specfic entry beforehand. The first
> one would be booted.

mhm, then i need a way to add it...is there anything similar in blspec
not implemented in barebox or is this a function that needs to be added to specification too?

> > i have defined some blspec files in /mnt/sd.1/loader/entries/ and i
> > want to show the menu by default and after some time the entry from
> > specific file should be booted. this gives user the possibility to
> > modify this conf to define his kernel for autoboot in headless mode.
> >
> > i tried to modify defaultenv/nv/boot.default, but this needs filenames
> > in /env/boot, no commands and if i use a script, it cannot start the
> > "boot -m sd.1" because the /env/boot scripts run bootm (tried loading
> > barebox with such script - ended with putting a separate script in
> > /env/bin/)
>
> It should work by setting:
>
> nv boot.default=myboot

i want to avoid user environment...it should be defined in builtin env, but afaik i can set the boot.default in this too...but currently i appended only my scripts...

i can use the script next as first entry if it is handled correctly

> With /env/boot/myboot:
>
> #!/bin/sh
>
> boot -m sd.1 -t 3
>
> >
> > btw. is there a way to load environment from a txt file from a
> > specific partition (similar to uboots uEnv.txt)?
>
> The barebox environment is a directory tree rather than a list of
> variables, so there is no way to load a text file as environment.
> There is the loadenv command which takes the path to an environment
> image as argument. You can generate such an image on the host
> with the bareboxenv tool and then load it under barebox with loadenv.

binary import is not that userfriendly :) for me no problem. so there should be a way to define a blspec config as default...

regards Frank

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