Questions tagged [u-boot]
U-Boot stands for Universal Boot. It's an open source powerful bootloader that can be used in addition to a standard bootloader on RaspberryPi. This is for issues with booting up the Pi while using U-boot.
45 questions
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1 answer
53 views
How to write boot command in uboot for my FIT image to boot in /dev/ram
I have been struggling with my uboot script to boot a fitImage with a particular partion table. I want to boot my fitImage on /dev/ram from uboot, but there is a compression error I don't understand. ...
0 votes
0 answers
64 views
U-Boot for Raspberry pi 4B - nothing comes up on the display
I am trying to get U-boot on raspberry pi 4B, after plug in there is no output on TeraTerm or Putty. The yellow LED is blinks normally, but still nothing comes up on the screen. I have already made ...
0 votes
0 answers
53 views
U-Boot on alternative pins
My GPIO 14/15 pins (and I believe UART0 and UART1) are broken, so I cannot use the default serial port for U-Boot. How can I get U-Boot to boot on a different serial port on my Raspberry Pi 4B?
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Cannot enable usb ethernet gadget on u-boot with pi-zero-2-w
I am following this tutorial to establish tftp on my rpi: https://bootlin.com/blog/tftp-nfs-booting-beagle-bone-black-wireless-pocket-beagle/. But I cannot make u-boot start usb ethernet gadget. I ...
1 vote
1 answer
281 views
Redirect U-Boot console to UART2 in RPi 4B
This is similar to this question, but for different hardware and with some things already tried. My ultimate goal is to have bluetooth on UART0 and debug on UART2. I use RPi 4B and need to redirect U-...
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1 vote
0 answers
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Kernel doesn't start after tftp load
I'm trying to set up a rpi model 3b with a yocto distro and u-boot. I've built the core-image-minimal using bitbake and I have the RPI_USE_U_BOOToption set in my local.conf. The created image runs ...
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2 votes
0 answers
236 views
RPi 3B+ & Yocto & U-Boot : free UART pins to be available for a RS232/485 HAT
I have the following hardware/software setup: Sferalabs StratoPi Base (Raspberry Pi 3B+ with a HAT for RS232/485) Distro built with Yocto and meta-raspberrypi on thud branch U-Boot SysVinit I want ...
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0 votes
1 answer
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Raspberry Pi CM4 with buildroot not loading Wi-Fi wlan0 interface
I am running a custom buildroot + uboot software with a 5.15.78-v8 linux kernel for a Raspberry Pi CM4 and am finding that the Wi-Fi driver by default isn't being loaded. In dmesg, I am seeing these ...
1 vote
0 answers
437 views
What actions modify u-boot environment variables?
Update 2022-10-11: Regarding the Adafruit Ultimate GPS HAT, in Ubuntu 22.04 LTS it works right out of the box on a Raspberry Pi 4. Maybe using Ubuntu 22.04 LTS on a Raspberry Pi 3 also has the same ...
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2 votes
0 answers
1k views
Unknown partition table type error from u-boot running on Raspberry Pi 4
I've been trying to run the Linux on my Raspberry Pi 4 board. But, I couldn't even achieve running the u-boot properly. The board launches up without any problem and starts running the u-boot. The u-...
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0 votes
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664 views
Raspberry Pi Secure Boot Configurations with Authentication IC
I am working on the Raspberry Pi Compute Module 4 with raspbian buster (command line only) os. I want to secure my Raspberry Pi, I have read some solutions on that. As I see there some manufacturers ...
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1 vote
0 answers
448 views
redirect U-Boot Console to UART4 in rpi cm4 board
I am using Raspberry pi CM4 for my project. The Hardware is designed in such a way that i need to redirect all the debug messages coming through serial UART0 to UART4. I Use U-Boot as a boot loader ...
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2 votes
1 answer
1k views
vc4-fkms-v3d not loading on custom system build with buildroot using u-boot (RPi4)
I try to build a custom system using buildroot for RPi4 64Bit that should run a Qt application on the 7" touchscreen. Relevant parts from my buildroot (2020.11.1) defconfig: BR2_aarch64=y ...
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1 vote
1 answer
1k views
How to save and compare U-Boot environment and fw_env.config
I'm using Yocto Dunfell and attempting to make use of Mender (https://mender.io) for OTA updates. My problem is similar to the question posed in the Mender forum here. However, my question is related ...
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1 vote
1 answer
489 views
Dual or Triple Boot Possible? [duplicate]
I'm wondering if it's possible to dual boot Raspbian, LineageOS, and RetroPie on an SD card? I've looked around and it seems like there is an issue with it not going straight into a bootloader like ...
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