Das U-Boot (The Universal Bootloader) is an open source, primary boot loader.

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How to make sd card as default boot in uboot?

U-Boot 2013.07 (Nov 21 2013 - 18:12:40) Memory: ECC disabled DRAM: 1 GiB MMC: zynq_sdhci: 0 SF: Detected N25Q128A with page size 64 KiB, total 16 MiB In: serial Out: serial Err: serial Net: ...
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261 views

How to flash U-Boot to a Devkit8500?

When I try running this: make CROSS_COMPILE=/root/prebuilt/linux-x86/toolchain/arm-eabi-4.4.0/bin/arm-eabi- omap3devkit8000_config I get this error: make: *** No rule to make target ...
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1answer
115 views

Applying device tree overlay

I have a device based on imx233-Olinuxino-Nano. The Arch Linux Arm distro boots and works. However, there is a slave device on my board that is connected to SPI of CPU. It is supported by kernel, ...
5
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1answer
218 views

Disabling TCP/IP during boot process in linux

I'm trying to install Linux on an FPGA board. The linux flavour is petalinux for Xilinx FPGA chips. The current Xilinx SoC has a Cortex A9 processor and a programmable hardware logic i.e FPGA. I ...
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1answer
42 views

boots from usb but uses internal hd as sda1

I am currently booting a kernal (via uboot) from a usb drive which works fine. The issue I am having is when the SSD is plugged in it uses the SSD as the sda1 and i have to unplug the SSD for the usb ...
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1answer
2k views

Understanding SPL & U-Boot Memory Map using bdinfo?

We are using beaglebone black based custom board, I want to write some test results into RAM location from SPL, and read that log and send it via tftpput to the host PC. So far I'm able to do tftpput ...
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1answer
366 views

In u-boot why spi flash is probed twice?

This is a section of the log from u-boot running on Avnet Microzed board -ARM CORTEX A9: [Thu Jun 26 17:40:53.656 2014] [Thu Jun 26 17:40:53.656 2014] [Thu Jun 26 17:40:53.656 2014] U-Boot 2013.07 ...
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1answer
232 views

Re-enabling the console once the kernel is up, if silent mode was set in Uboot?

I have enabled the silent mode by setting the U-boot env variable "silent". Uboot-> setenv silent 1 Uboot-> saveenv Now, I would like to re-enable the console once the kernel is up. Can ...
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1answer
157 views

problem with U-boot while flashing Linux in sd-card

Please help as it is immense necessary for a project which is to be evaluated coming week. Also, I am very new to this and unable to find help from existing contents available on the Internet. While ...
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1answer
309 views

How to make a USB storage device undetectable in u-boot?

I need to do a test in an embedded system where I plug in the USB storage device and do "usb start" but the USB storage device is not detected. I have a working pendrive. How to make it undetectable ...
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1answer
23 views

Extlinux.conf on separate partition?

I'm trying to configure a system with separate boot partition, booted with U-boot and extlinux loader. Could I locate extlinux.conf on separate partition, but kernel (zImage) and device tree on root ...
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1answer
386 views

gcc: error trying to exec 'cc1': execvp: No such file or directory

When trying to run make -j2 -s as instructed from this guide, I am getting the following error. gcc: error trying to exec 'cc1': execvp: No such file or directory Any idea what I have done ...
0
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1answer
283 views

kernel panic not syncing: vfs :unable to mount root fs on unknown block(31,1)

I am trying to boot linux from flash on an powerpc board. In u-boot I set bootargs with: setenv bootargs root=/dev/mtdblock1 rootfstype=ext2 rw console=ttyS0,115200 ramdisk_image=\${rd_size} I also ...
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1answer
87 views

U-Boot and armhf installation

I am currently trying to install ANY linux distro onto an external HD. My goal is to boot using the external device, but my problem at the moment is that I am unable to achieve this. I try to boot ...
0
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1answer
285 views

Editing make process?

So.. I figure this is alright to ask around here. https://github.com/swarren/u-boot — I have this, need to get the binary so I can finally run something other than Raspbian on the Pi. The ...
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1answer
110 views

FDT and ATAGS support not compiled in - hanging ### ERROR ### Please RESET the board ###

I'm following the tutorial from the below mentioned website to install Linux on SoCkit by Terasic: https://zhehaomao.com/blog/fpga/2013/12/24/sockit-2.html. This is my first time building a Linux, ...
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1answer
358 views

Disabling MMC in uboot

Following is the log message related to u-boot on Xilinx zynq platform: [Fri Apr 04 19:57:50.990 2014] U-Boot 2013.07 (Apr 04 2014 - 19:38:00) [Fri Apr 04 19:57:50.990 2014] [Fri Apr 04 ...
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1answer
537 views

How to verify that my uImage is good?

I had a zImage file and I used mkimage tool to convert it into a uImage format. When I am booting this file, it is not been found by u-boot: Wrong Image Format for bootm command ERROR: can't get ...
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1answer
44 views

How to create a U-boot Image?

I have U-Boot source files and GCC-4.9.3 and I want to create U-Boot image for wandboard and I am using following commands: export PATH=$PATH:"address of arm-none-eabi" export ...
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212 views

Procedure to figuring out U-Boot environment location from binary/hex dump

TL;DR: I have a u-boot (version 1.6.1) enabled board, I have dumped the partition that contains the environment variables to a binary file using dd and now am stumped at finding out how to translate ...
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981 views

Can a zImage be used with U-Boot and ArchLinuxARM?

I am using U-Boot on a Cubieboard 2, sun7i AllWinner A20 board to boot into ArchLinux ARM. The kernel version that I have is the sun7i latest, which is 3.4.103-5-ARCH so, in kernel terms, it's a bit ...
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319 views

How to run Ubilinux / u-boot under qemu (x86)

I wish to test Ubilinux (http://www.emutexlabs.com/ubilinux) before flashing it onto my Intel Edison board, which currently has Yocto on it. I am able to emulate Yocto for Edison with qemu, running ...
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73 views

configure port for dhcp request in uboot

We are fetching ip using DHCP in u-boot. we need to send via same interface (eg eth1) every time. but DHCP request sent via any configured interface(eth1/eth2..). How can we configure u-boot to send ...
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243 views

How to quote the quote marks in strings in u-boot?

Currently my boot string (displayed with env print) is: If I want to set a variable to a string in u-boot, I do env set variable 'my string' But what to do if the string contains the quote ...
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49 views

Can I avoid writing to the screen until a couple seconds before X11 is initialized?

On an embedded device running Linux, I am writing to the monitor from the bootloader (U-Boot) to display a given logo. Once the linux kernel is loaded, however, it clears the screen until X11 is ...
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144 views

Why u-boot starts so late after I give power

Running petalinux from sd card on ARM cortex A9 based zynq zc702 board. Zynq is an SoC with ARM and FPGA. Before the log messages (corresponding to u-boot) start printing, the screen (serail ...
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610 views

Booting over the LAN using uboot

I am trying to boot my beaglebone over the LAN. I am able to download the Kernel uImage from the TFTP server. Here is what I did - U-Boot SPL 2011.09-00053-gb423c52 (Aug 10 2012 - 11:26:55) Texas ...
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62 views

Move/Change boot file system

I have a webcam Sunluxy 720p and I need to adapt the configuration to my needs. The / file system is read-only. I have access to u-boot via UART/USB cable. I can also connect via telnet as root. ...
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67 views

U-Boot: Changing TTY columns and rows for virtual consoles

Having installed GRUB as boot manager allows the operating system (Linux) to boot on specific video mode so the TTY virtual consoles change its columns and rows (width and height). For example, ...
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320 views

Beaglebone: Backup image mounts root as Read-only

After I had completed creating applications for my BB white (running ubuntu), I created a backup of the SD card using-> sudo dd if=/dev/disk2 of=/Volumes/BONE/bone_custom.img Recently, I tried to ...
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289 views

Encrypt root file system and decrypt using U-Boot with key stored in FPGA

We are using Cyclone V, which essentially is a SOC comprised of FPGA + ARM core. Is it possible to encrypt the root file system and decrypt it by using U-Boot with a key which is located in the FPGA?
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51 views

u-boot command description: mtdargs and boardsetup

Reading the readme.Falcon I found the following lines: uboot> run mtdargs addip2 addtty another command that is not working and I dont what it does is: fdt boardsetup When I treid to run ...
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191 views

u-boot compilation error

I am trying to build u-boot and getting these error No private recovery resources for TARGET_DEVICE G0 Building U-boot make -C u-boot ARCH=arm fio-om3xxx_config make[1]: Entering directory ...
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620 views

Booting linux from SD Card on a Leopard board (Ti DM365)

I have a Leopard board with Ti DM365 processor. Problem is that I tried to flash the bootloader (uboot) to nand and landed up corrupting the NAND. Now I can't use the NAND to bring up the board. So I ...
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20 views

How to play a beep/sound file from the u-boot for Panda-board?

I want to play a Beep/Sound file during the boot up from the u-boot on the speakers connected to panda-board. As this functionality is there in PC ,How to replicate the same on the embedded platform ...
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86 views

Debian 8.1 with Uboot bootloader cannot run FSCK on reboot

I am running Debian 8.1 on an SD card on a Banana PI with U-boot bootloader. I'm trying to force my system to run fsck on reboot, but no matter what I do, nothing happens. Here are what I have tried ...
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0answers
42 views

Memory dump with u-boot on conga-QMX6

I'm starting work on a preconfigured (working) system based on conga-QMX6 (with ubuntu and u-boot). Before start changing the system I want to make a complete dump of memory for restore it if ...
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128 views

How does rootfs.ext3 image file work?

I have a FriendlyARM mini6410 device and I have just hardly make it boot from sdcard. Now my sdcard uses "u-boot for mini" (u-boot.bin), "linux2.6.38 kernel" (zImage) and "rootfs qtopia fs" ...
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193 views

mmc error during am335x boot “mmc_send_cmd : timeout: No status update”

We are using Beaglebone black based (am335x) custom board, We are using eMMC for our board. While booting U-Boot shows error/warning, mmc_send_cmd : timeout: No status update U-Boot ...
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83 views

Is it possible to use u-boot or redboot to boot a linux (minimal ubuntu) image on x86_64?

I am reading conflicting information about if this is possible or if it is a bad idea. I have used u-boot with Pandaboard but obviously this isn't x86_64 architecture. I have not seen any examples ...
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557 views

Kernel panic - not syncing: No init found

I am trying to build the linux kernel image for the Beaglebone black right from scratch! i am following the tutorials referred by Free-electrons(http://free-electrons.com/training/kernel/) I am ...
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Booting linux image using u-boot SPL

OS: petalinux Board: Xilinx z702 evaluation board having ARM Cortex A9 and FPGA on the zc700 SoC Relevant question:: Why u-boot starts so late after I give power Background: I observed that first ...
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Wrong Image Format for bootm command ERROR: can't get kernel image!

I keep getting this error when booting linux on ARM cortex A9 based xilinx chip: U-Boot 2013.07 (Mar 31 2014 - 16:34:50) Memory: ECC disabled DRAM: 1 GiB MMC: zynq_sdhci: 0 SF: Detected N25Q128A ...