[yocto] Reg flashing Yocto SDcard image onto IMX6q sabre sd card

[Sandeep G.R]

Hi Shalini,

     Below is the basic steps for SD card boot on iMX6. Create two
partitions on the SD card ext2 for boot and ext4 for rootfs using following
commands.

*Create the partions:*

*sudo dd if=/dev/zero of=/dev/sdX bs=1M count=16*
*sudo mkfs.ext2 /dev/sdX1 -L boot*
*sudo mkfs.ext4 /dev/sdX2 -L rootfs*

*Mount the partions:*

*sudo mkdir -p /media/boot/*
*sudo mkdir -p /media/rootfs/*
*sudo mount /dev/sdX1 /media/boot/*
*sudo mount /dev/sdX2 /media/rootfs/*

*Copy the binaries to SD card:*

*sudo tar xfvp yocto-build/tmp/deploy/rootfs.tar -C /media/rootfs/*
*sudo cp -v yocto-build/tmp/deploy/kernel-image /media/boot*
*sudo cp -v yocto-build/tmp/deploy/kernel-dtb /media/boot*

*Edit the fstab file as shown below:*

*sudo nano /media/rootfs/etc/fstab*
*/dev/sdX2   /                   auto   errors=remount-ro   0   1*
*/dev/sdX1   /boot/uboot  auto   defaults                   0   2*

Make sure your uboot environment variables are set properly for sd card
flash.


On Mon, Apr 6, 2015 at 6:23 AM, Shalini K P <Shalini.KP at lnttechservices.com>
wrote:

>  Hi,
>
>
>
>      I have prepared an Yocto SD card image
> "core-image-minimal-imx6q-sabresd.sdcard".  I trying to flash the image
> onto sdcard using the command
>
> *"sudo dd  if= core-image-minimal-imx6q-sabresd.sdcard of=/dev/sdb bs=1M"*
>
> *Sync*
>
> *Sync*
>
>
>
> I m getting the boot messages as below
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> *U-Boot 2014.10+fslc+g5fd0b60 (Apr 03 2015 - 18:55:01) CPU:   Freescale
> i.MX6Q rev1.2 at 792 MHz Reset cause: POR Board: MX6-SabreSD I2C:   ready
> DRAM:  1 GiB MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 *** Warning - bad
> CRC, using default environment No panel detected: default to Hannstar-XGA
> Display: Hannstar-XGA (1024x768) In:    serial Out:   serial Err:   serial
> PMIC:  PFUZE100 ID=0x10 Net:   FEC [PRIME] Hit any key to stop autoboot:  1
> *
>
> I m stuck up badly.  It is not going further.  Does the sdcard image
> contain ü-boot, kernel image and rootfs ? or should I flash u-boot
> separately ? I even tried flashing both u-boot and sdcaed image. But
> getting same messages.  Request help in this regard.  I'm using Dizzy
> branch  and SABRESD Evk board.
>
>
>
>
>
> Thanks & Regards
>
> Shalini K P
>
>
>
> *L&T Technology Services Ltd*
>
> www.LntTechservices.com <http://www.lnttechservices.com/>
>
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-- 
*Thanks & Regards,*
*Sandeep G R*
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