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

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File system CRC check

I know that before running the kernel, u-boot (the boot loader) will check the kernel image CRC. Only if it is correct it will go further, else it will give a "Bad CRC" error. I want to do same thing ...
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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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160 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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566 views

FreeBSD on Raspberry Pi2

I want to build FreeBSD custom Image for my Raspberry Pi2. I have read about the boot process in RPi2. I also went through the chrochet build instruction document. I learned from some websites that ...
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Kernel booting stops right after “Uncompressing Linux…”

I'm trying to bring up an ARM-based board. I've got U-Boot working but can't seem to get the kernel to load. Most of the time it only goes as far as: Starting kernel ... Uncompressing Linux... A ...
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158 views

ERROR: image is not a fdt - must RESET the board to recover

I am attempting to boot the freescale 1040RDB and am having some difficulty. I'm using a pre-built SDK from Freescale that has a linux VB image with the yocto installation along with all of the yocto ...
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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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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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68 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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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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733 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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227 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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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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U-Boot Bootup error

I'm running a Debian Linux on a Cubietruck, running off a SD card. When I power on, I get the following error: Booting kernel from Legacy Image at 46000000 ... ...
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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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244 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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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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NFS root filesystem doesn't mount at boot

This is an embedded device with a custom kernel (see below for relevant config). It's an x86-32 machine booting like this: coreboot->uboot->linux. I can mount the NFS share in linux if I use ...
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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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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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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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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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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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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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How to create boot SD card for Banana Pi manually

It seems that I have a lack of understanding how booting SD-Card images on devices like the Banana Pi work. The situation is as follows. I have a Banana Pi and a Banana Pro. Every device has an ...
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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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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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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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Building a binary image from U-Boot tools

How to build binary image from u-boot tools, for a particular BlackFin processor in the Linux host machine?
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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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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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348 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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Linux Booting from NAND instead the uSD

I have some trouble with booting up my zImage. I'm using CORE9G25. So, usually I boot up using the uSD. And after uncompressing the linux and etc it's working. But, after I moved the uSD to the other ...
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How can I show battery percentage at u-boot?

I am checking the battery level from my sensor and able to display a static 'low battery' or 'in charging' image.How or what approach should I take to show the level of battery percentage through ...
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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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Creating a Live Kernel with u-boot

I want to create a live kernel with u-boot. I have a ARM board that has a 4GB nand flash memory. I used manufacturing tools from the freescale website for the i.mx6 chip. I have read that you can ...
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789 views

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 ...