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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.

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559 views

Speeding up boot process : RBP 3B+ and UBoot

I am trying to setup a system in the RBP 3B+ using UBoot as bootloader. I am trying to get it to boot the fastest I can (at the moment, I have a Class 10 SD card) and I am getting around 1.4s from ...
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1answer
86 views

How Raspberry Pi booting up? [duplicate]

I want to know, how Raspberry Pi booting up. Of course, I can google it, but I can`t found this information in official documentation [ https://www.raspberrypi.org/documentation ]. I am searching for ...
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2answers
5k views

u-boot for Raspberry Pi 3

I'm trying to get u-boot working on Raspberry Pi 3 but so far no success. Every time I plug in my SD card to the Pi there isn't any output to the console, only the green LED blinks several times. ...
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0answers
43 views

Choose a boot partition based on rtc contents

We ship units which have an expected life in the field of ten to twenty years. They include an RTC with a replaceable coin cell. Most of the time the machines will be powered on, so the RTC battery is ...
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3answers
2k views

Running U-boot on a Pi Zero W

I'm trying to run u-boot on a Pi Zero W, but after powering up, the Pi shows only the rainbow screen. I used these instruction, but with a different config file, configs/rpi_defconfig. I also tried ...
4
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1answer
547 views

Can I load u-boot without an sdcard?

I'm trying to build a fully "diskless" raspi3 environment, by having the pi load u-boot from the network (similar to the usual pxelinux setup for x86) I've gotten the pi to get an ip address via dhcp ...
3
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3answers
8k views

RPi3 + buildroot + U-boot

What I want to do: I am working on a project where we want to update our RPi on boot. We are working with buildroot successfully for almost one year. Now I am trying to get it work with U-boot. What ...
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1answer
199 views

Cannot fatload Kernel image files in U-Boot?

Good day folks, I am here with a problem that has so far stumped me completely. When I use U-Boot to load files into memory from my SD Card, it works completely fine when I fatload my device tree ...
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1answer
555 views

Problem in booting an u-boot image for raspberry pi 2 on QEMU

Needed some help in running u-boot on qemu emulating Raspberry pi 2. I came across qemu supporting emulation of Raspbeerry pi 2 (raspi2 machine in qemu). I thought of giving it a try by running u-boot ...
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1answer
638 views

U-Boot for raspberry pi Install cross compiler and export environment variables:

I have done below procedure but failures occurs root@caravel:/home/ram/Desktop/u-boot-2017.01# sudo apt-get install gcc-arm-linux-gnueabi Reading package lists... Done Building dependency tree ...
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2answers
422 views

Why does Raspberry PI use GPU for loading bootloaders and configuration

There is a great explanation of the boot process - What is the boot sequence? But I can't understand why GPU is responsible for doing all that work. Could someone explain this decision? I can't ...
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0answers
168 views

Embedded devices boot process vs PC

I am trying to dive deeper into the boot process and understand how everything works. I have understanding but I am not sure I am right. I have already found a lot of great examples like that What ...
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4answers
7k views

Raspberry Pi 3 Ubuntu 16.04 Server upgrade error

So last week I bought the Raspberry Pi 3 model B with the complete Canakit. I installed Ubuntu 16.04 server standard image on the micro sd card with my Windows computer. I used SF Formatter to ...
4
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1answer
660 views

Is network boot possible on Raspberry Pi?

I have several RPI and want them to have a common OS shared thanks to a hotpot generated from a central computer, hence my question: Is network boot possible on Rasperry PI?
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2answers
936 views

How to boot with customized image without the text to Console Autologin

I want to customize the Raspbian OS in such a way that when boots no text is displayed on the screen but a custom image instead. What I have is web based application and I start it with chromium in ...
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0answers
1k views

Booting with Grub on U-Boot

I have some specific needs for a bootloader for the Raspberry Pi. I am using a Model 2 B. So the short version is I will have devices scattered throughout the country for various purposes, and these ...
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0answers
157 views

Get SD card serial / oemid from U-boot on RaspberryPi3

I'm using U-boot on raspberry pi 3 and I want to obtain SD card oemid or serial number. "Normally" it can be done by accessing /sys/block/mmcblk0/device/ or by running udevadm info -a -n /dev/sdX on ...
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1answer
599 views

HOW creating an minimal Ubuntu linux using the Ubuntu core image?

I want to create a small Ubuntu 14.0.4 image for raspberry pi2 and followed the following steps, but I can't boot the device. what am I doing wrong? Partitioned the SD card into two FAT and ext4 ...
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5answers
7k views

Raspberry Pi 2 support PXE booting or network booting without an SD card

I would like to try to boot the Raspberry Pi 2 without the need of an SD card, anyone know how I may go about do this, if it is even possible?
5
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1answer
540 views

How do I setup a Raspberry Pi 2 Model B to do a network install via TFTP?

I have a TFTP server, and I want to install any new Raspberry Pis on my network to use the TFTP server to install the OS. How do I got about doing this, I checked the Documentation on the official ...
8
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4answers
1k views

Self healing SD Card partitions

Many sd cards are rather fragile. I've had a pi for about 2 years now and the main failures were due to the sd card getting corrupted for a reason or another. I'm wondering if there is some ...
1
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1answer
793 views

How to U-Boot for Arch linux over NAS?

I want to use u-boot my Arch linux including the kernel from the NAS via NFS (or TFTP if it requires). I have installed Arch before and I understand kernel.img, I have read this link about U-Boot ...
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1answer
327 views

U-boot for Rasp, what stage would be?

I am preparing to experiment with U-boot for Raspberry pi. For that reason I did some research about the boot process. What I understand is that the first stage boot loader is hard coded in the ...
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1answer
2k views

install U-boot : error : Makefile:501: *** “System not configured - see README”. Stop

I try to install u-boot . I followed [ http://elinux.org/RPi_U-Boot ] I downloaded source form git git clone git://git.denx.de/u-boot.git and get the Raspberry compiler git clone git://github.com/...
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2answers
12k views

Location of berryboot's config.txt

Related to another question I've asked earlier: Where is the berryboot's 'config.txt' physically located on the raspberry pi? And how would I access it via command line or similar?
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3answers
4k views

U-BOOT and tftp (network) crashes or blocks during uImage download

I installed a u-boot.bin on my boot-parition and adapted everything to make it work and boot the kernel over tftp. I'm using the current (6709570c) revision from here (Gonzo) and followed the wiki on ...