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33 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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0answers
21 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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0answers
22 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 ...
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1answer
23 views

U-boot static IP doesn't seem to “apply”

When I enter the command setenv ippaddr xxxx.xxxx.xxxx.xxxx it doesn't seem to actually connect to the network on that address. I have a private network set up with the address in the same subnet ...
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0answers
25 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
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1answer
68 views

How to recover firmware on a embedded device with corrupted u-boot and kernel image? [closed]

My embedded device is not working after updating firmware. Thus I tried to update firmware using u-boot. I could successfully get u-boot console via serial connection, but updating firmware failed due ...
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0answers
92 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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1answer
60 views

How to download original ramdisk file to the computer? [closed]

Linux embedded, is it possible to download original ramdisk file to the computer, to get source code? Access via SFTP. U-boot 1.2.0 Kernel command line: root=/dev/mtdblock3 ...
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37 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 ...
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0answers
104 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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1answer
87 views

Unable to connect to git.denx.de

I am trying to download U-boot for beaglebone black using Ubuntu 12.04, for this I am using this command git clone git://git.denx.de/u-boot.git Now, after typing this command in terminal, for about ...
1
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1answer
421 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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2answers
1k views

tftpput in U-Boot: error: 'Access violation' (2)

I have enabled CONFIG_CMD_TFTPPUT in U-Boot, but I am not able to use it. I have set the serverip and ipaddr environment variables. When I use it as follows, it times out: u-boot# tftpput ...
2
votes
1answer
147 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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0answers
20 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
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2answers
102 views

How to find out the bad block table offset and how to change it in u-Boot

I am facing a similar problem as this: Kernel does not recognize nand bad blocks marked by u-boot I'm using a friendlyARM micro2440 board that contains the s3c2440 ARM processor. u-Boot has found ...
3
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1answer
549 views

Booting using initramfs instead of uramdisk

I am working on Zynq Microzed board. It is booting perfectly with uramdisk.image.gz but I trying to boot it with initramfs.cpio. In this regard I have made following changes in header files of ...
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0answers
51 views

u-boot spi initialisation in omap3

I was looking into spi driver in u boot , here is a small snippet from omap_spi.c void spi_init(void) { gpMCSPIRegs = (MCSPI_REGS *)MCSPI_SPI1_IO_BASE; unsigned long u, n; /* ...
1
vote
1answer
147 views

How to get log from u-boot without com-port

U-boot is configured to print its logs into com-port by default. There is a device I can't receive this information (without uart/com). Can I configure u-boot to store its log strings into some place ...
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0answers
464 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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0answers
89 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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0answers
262 views

using sf probe to make u-boot faster

My uboot was running slow on a ARM cortex A9 processor based Xilinx zynq chip. Xilinx forum referred me to the following to solve this issue: +From 0a212cfc2dd4e4d1595de2ca2dde3f642e5707e7 Mon ...
2
votes
0answers
45 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 ...
4
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1answer
201 views

What does this dd command do exactly?

I have the an embedded device with this SD card: [root@(none) ~]# busybox fdisk -l Disk /dev/mmcblk0: 3965 MB, 3965190144 bytes 4 heads, 16 sectors/track, 121008 cylinders Units = cylinders of 64 * ...
2
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0answers
77 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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0answers
104 views

Bootable image with jffs2 file system

I have the following images: zImage around 1.1 MB image.ub: 1.1MB rootfs.jffs2 4.3 MB u-boot (this is the bootloader I am using) I understand that the image.ub is not including file system,and ...
0
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1answer
133 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
405 views

Gem.e000b000 Waiting for PHY auto negotiation to complete… TIMEOUT?

The u-boot prints these before launching the kernel Gem.e000b000 Waiting for PHY auto negotiation to complete......... TIMEOUT ! BOOTP broadcast 1 BOOTP broadcast 2 BOOTP broadcast 3 BOOTP broadcast ...
0
votes
1answer
757 views

Bootloader fails to load linux kernel

I upgraded linux kernel from 2.6.32 to 3.0.7 but now bootloader isn't able to load the kernel image. Specifically, boot procedure freezes after: Starting kernel ... Uncompressing Linux... done, ...
0
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1answer
109 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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1k 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 ...
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2answers
3k views

How to convert a zImage into uImage for booting with u-boot

I have a zImage that I want to boot using u-boot. I think zImage is not understood by u-boot,as I am getting the following error after uboot executes: Wrong Image Format for bootm command ERROR: ...
0
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2answers
87 views

Trying to understand uboot image copying

The following is snippet from u-boot-xarm/include/configs/zynq_zc702.h "qspiboot=echo Copying Linux from QSPI flash to RAM...; \ cp 0xFC100000 0x8000 ${kernel_size}; \ ...
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0answers
129 views

Can't Install Debian On wm8505 Tablet

I have WM8505 sylvania brand tablet which is come with windows ce 6.0 installed on it. I am trying to install Abrasive's Debian on it but when i remove sd (after install) it reboots and shows nothing ...
1
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1answer
198 views

How to configure bootloader to boot the new kernel?

I succesfully upgraded linux kernel from 2.6.32.61 to 3.0.7 on BeableBoard-xM, following the steps below: download and untar kernel sources 3.0.7 from kernel.org copy kernel sources on /usr/src ...
2
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1answer
337 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: ...
3
votes
1answer
409 views

rootfs.jffs2 files system won't fit in mtd3

I have a files system that I am trying to put in flash memory mtd3 partition. I first boot using uboot and then do run sdboot to boot using SD card as shown below: U-Boot-PetaLinux> ...
1
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1answer
510 views

Memory display using md in u-boot

U-Boot-PetaLinux> md 0xc 0000000c: 2201c2a0 1a8441c5 90031018 52011010 ...".A.........R 0000001c: 0045c903 022c19ae 01077620 ca173dc0 ..E...,. v...=.. 0000002c: 0804e426 15dd0c12 201092c1 ...
0
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0answers
33 views

interpretation of coninfo in uboot

U-Boot-PetaLinux> con List of available devices: serial 80000003 SIO stdin stdout stderr ttyPS0 00000003 .IO how is the serial and ttyPS0 different ? And how do I interpret the complete ...
3
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1answer
1k views

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 ...
3
votes
1answer
2k views

How to extract files from uImage?

Buildroot is generating Images for an embedded device where they should run on. This is working very well. In those Images the rootfs is included. Due to some research I'd like to look into that ...
1
vote
1answer
182 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 ...
5
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1answer
131 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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0answers
28 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?
0
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2answers
704 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
199 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 ...
2
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0answers
356 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 ...
2
votes
1answer
3k views

u-boot disable DHCP requests with setenv

I am trying to disable the DHCP requests after the Kernel was loaded. Using freescale imx25 dev-board in standard config. In u-boot, I find two lines ip=dhcp: MX25 U-Boot > pri bootdelay=3 ...
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1answer
1k views

How can I tell what memory RAM address range is being used by uboot?

I am in uboot and was wondering, how could I tell what RAM address range is being used by uboot. uboot needs memory to run so it might be using some of the RAM. I want to avoid modifying those RAM ...
0
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1answer
449 views

Need reference on the usage of bist commands

I have an embedded device that has bist on it. During boot up I can stop in uboot and get into bist. When I do helphere I see a list of commands. I am however unable to use them because there is not ...