Re: Raspberry Pi 3B Slow Boot-up

On Mon, Mar 14, 2022 at 8:01 PM Mark Millard <marklmi@yahoo.com> wrote:

> On 2022-Mar-14, at 02:55, Archimedes Gaviola <archimedes.gaviola@gmail.com>
> wrote:
>
> > In the default config.txt file there is [pi4] line. If I'm going to
> remove this [pi4] line, the boot-up process is very slow. Slow in a sense
> that some extended time is observed as compared to the default. I already
> tested emphasizing the boot_delay=1 but to no avail. The reason why I
> removed it is because I want to change the settings of the HDMI display
> resolution as changes will not take effect with the [pi4] line in RPi 3B.
> >
> > With 14.0-CURRENT (February 24, 2022 snapshot) I have described my
> resolution here
> https://lists.freebsd.org/archives/freebsd-arm/2022-February/001070.html
> however with the latest 14.0-CURRENT (March 10, 2022 snapshot) it's no
> longer possible. Any idea what's going on?
> >
> > Below is the default config.txt and my current config.txt for reference.
> >
> > freebsd@generic:~ % cat /boot/msdos/config.txt
> > [all]
> > arm_64bit=1
> > dtparam=audio=on,i2c_arm=on,spi=on
> > dtoverlay=mmc
> > dtoverlay=disable-bt
> > device_tree_address=0x4000
> > kernel=u-boot.bin
> >
> > [pi4]
> > hdmi_safe=1
> > armstub=armstub8-gic.bin
> >
> > freebsd@generic:~ % cat /boot/msdos/config.txt
> > [all]
> > arm_64bit=1
> > dtparam=audio=on,i2c_arm=on,spi=on
> > dtoverlay=mmc
> > dtoverlay=disable-bt
> > device_tree_address=0x4000
> > kernel=u-boot.bin
> >
> > hdmi_group=2
> > hdmi_mode=11
> > armstub=armstub8-gic.bin
>
> armstub8-gic.bin is specific to the BCM2711 and will not
> work for the RPi3, as I understand.
>
> armstub=armstub8.bin is the default and is what was being
> used for the RPi3 when the [pi4] was in place.
>
> You have the option of listing a [pi3] section last
> (after the [pi4] section). To have a [pi3] section
> be last, it should have an explicit
> armstub=armstub8.bin line.
>
> Listing older RPi* models last is done because some older
> RPi models ignore the [] notation and listing things last
> overrides earlier assignments, in this case overriding
> assignments for newer models. It is a safe notational
> ordering convention, even for models that do support
> the [] notation sufficiently.
>
> If one depended on RPi3 models processing [] notation,
> if it does, then another option would have been to move
> the [rpi4] line to be just before the
> armstub=armstub8-gic.bin line, causing the RPi3 to skip
> the assignment and use the default.
>


Hi Mark,

Awesome, it works great! Below is my revised config.txt file now, no more
boot-up delay and display resolution was effectively changed. Thank you so
much for sharing your thoughts in well-explained details, now I learned.

freebsd@generic:~ % cat /boot/msdos/config.txt
[all]
boot_delay=0
arm_64bit=1
dtparam=audio=on,i2c_arm=on,spi=on
dtoverlay=mmc
dtoverlay=disable-bt
device_tree_address=0x4000
kernel=u-boot.bin

[pi4]
armstub=armstub8-gic.bin

[pi3]
hdmi_group=2
hdmi_mode=11

Thanks,
Archimedes