[yocto] [meta-raspberrypi] Confusion about U-Boot setup

[Greg Wilson-Lindberg]

> -----Original Message-----
> From: Belisko Marek [mailto:marek.belisko at gmail.com]
> Sent: Wednesday, September 04, 2019 12:26 AM
> To: Greg Wilson-Lindberg <GWilson at sakuraus.com>
> Cc: Yocto list discussion <yocto at yoctoproject.org>
> Subject: Re: [yocto] [meta-raspberrypi] Confusion about U-Boot setup
> 
> Hi,
> 
> On Tue, Sep 3, 2019 at 8:58 PM Greg Wilson-Lindberg <GWilson at sakuraus.com>
> wrote:
> >
> > I've configured a sumo build, by way of QT's boot2qt to use u-boot and I am
> seeing a u-boot prompt for keypress to drop out of automatic booting on startup, but
> I don't see any configuration scripts for u-boot (uEnv.txt or a script) on the image or
> in the build tmp/ dir.
> >
> > For the raspberry pi, how is u-boot configured on startup?
> there is u-boot variable called bootdelay which can be set to e.g. 2 to wait until
> autoboot for 2 secs. I think this is the case. Thanks.

There is a variable "BOOT_DELAY", that is used to tell the Raspberry Pi boot loader to delay after setting up the graphics and before loading the kernel. This has nothing to do with u-boot.  There should be some way to change the u-boot delay that waits for user input, among other things, I just haven't been able to find it yet and was wondering if someone could point me to where it can be found.

BR,
Greg

> >
> > Regards,
> > Greg Wilson-Lindberg
> >
> > --
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> 
> BR,
> 
> marek