Re: Raspberry Pi 3B Slow Boot-up
- Reply: Mark Millard : "Re: Raspberry Pi 3B Slow Boot-up"
- In reply to: Archimedes Gaviola : "Re: Raspberry Pi 3B Slow Boot-up"
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Date: Mon, 14 Mar 2022 14:12:49 UTC
On Mon, Mar 14, 2022 at 9:50 PM Archimedes Gaviola < archimedes.gaviola@gmail.com> wrote: > > > 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 > Hi Mark, I did further testing and these two configuration settings (removing [pi4] and armstub=armstub8-gic.bin lines) below will do too. 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 [pi3] hdmi_group=2 hdmi_mode=11 or 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 hdmi_group=2 hdmi_mode=11 Thanks again for the help! Archimedes >