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

learn more… | top users | synonyms

1
vote
2answers
1k views

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 ...
1
vote
2answers
225 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 ...
5
votes
1answer
172 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 ...
2
votes
1answer
220 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 ...
2
votes
1answer
223 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 ...
2
votes
1answer
534 views

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: ...
1
vote
1answer
80 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 ...
1
vote
1answer
96 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 ...
1
vote
1answer
811 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 ...
1
vote
1answer
237 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 ...
0
votes
1answer
42 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, ...
0
votes
1answer
127 views

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 ... ...
0
votes
1answer
215 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 ...
0
votes
1answer
267 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 ...
2
votes
0answers
69 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 ...
2
votes
0answers
64 views

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 ...
2
votes
0answers
28 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 ...
2
votes
0answers
52 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 ...
2
votes
0answers
294 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 ...
2
votes
0answers
47 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 ...
2
votes
0answers
106 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 ...
2
votes
0answers
447 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 ...
1
vote
0answers
154 views

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 ...
1
vote
0answers
144 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?
1
vote
0answers
24 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 ...
1
vote
0answers
131 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 ...
1
vote
0answers
37 views

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?
1
vote
0answers
541 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 ...
0
votes
0answers
15 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" ...
0
votes
0answers
8 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 ...
0
votes
0answers
25 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 ...
0
votes
0answers
378 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 ...
0
votes
0answers
40 views

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 ...
0
votes
0answers
62 views

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 ...
0
votes
0answers
166 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 ...
0
votes
0answers
55 views

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 ...
0
votes
0answers
879 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 ...
0
votes
0answers
2k views

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 ...