Re: Problem booting fsl-image-gui with imx6qsabrelite

[Eric Nelson <eric.nelson@boundarydevices.com>]

Hi Federico,

On 03/06/2014 05:36 AM, Federico Vitali wrote:
> Goodmorning,
>
> I have built a fsl-image-gui (poky dora) for imx6qsabrelite. I have
> followed the instruction
> to burn the sdcard image ona micro sd.
>
> On boot I get the following errors:
>

This is the problem:

> U-Boot 2009.08 (Jul 05 2012 - 15:37:27)
>
> CPU:   Freescale i.MX 6 family 0.0V at 792 MHz
> Temperature:   can't get valid data!
> mx6q pll1: 792MHz
> mx6q pll2: 528MHz
> mx6q pll3: 480MHz
> mx6q pll8: 50MHz
> ipg clock     : 66000000Hz
> ipg per clock : 66000000Hz
> uart clock    : 80000000Hz
> cspi clock    : 60000000Hz
> ahb clock     : 132000000Hz
> axi clock   : 264000000Hz
> emi_slow clock: 29333333Hz
> ddr clock     : 528000000Hz
> usdhc1 clock  : 200000000Hz
> usdhc2 clock  : 200000000Hz-
> usdhc3 clock  : 200000000Hz
> usdhc4 clock  : 200000000Hz
> nfc clock     : 24000000Hz
> Board: MX6Q-SABRELITE:[ POR]
> I2C:   ready
> DRAM:   1 GB
> MMC:   FSL_USDHC: 0,FSL_USDHC: 1
> JEDEC ID: 0xbf:0x25:0x41
> Reading SPI NOR flash 0xc0000 [0x2000 bytes] -> ram 0x276009b8
> SUCCESS
>
> In:    serial
> Out:   serial
> Err:   serial
> Net:   got MAC address from IIM: 00:19:b8:00:fd:74
> FEC0 [PRIME]
> Warning: FEC0 MAC addresses don't match:
> Address in SROM is         00:19:b8:00:fd:74
> Address in environment is  00:01:02:03:04:05
>
> Hit any key to stop autoboot:  0
> Card did not respond to voltage select!
> mmc0(part 0) is current device
> MMC: block number 0x1 exceeds max(0x0)
> ** Can't read from device 0 **
>
> ** Unable to use mmc 0:1 for fatload **
> ** Bad partition 1 **
> mmc1 is current device
> reading /6q_bootscript
>

And this is the key symptom (6q_bootscript):

> ** Unable to read "/6q_bootscript" from mmc 1:1 **
> Loading file "/6q_bootscript" from mmc device 1:1 (xxb1)
> Failed to mount ext2 filesystem...
> ** Bad ext2 partition or disk - mmc 1:1 **
>
> What could be the problem? I've also tried with different images, but
> without success.
>

Yocto includes a boot script that assumes you're using
a main-line version of U-Boot. Because of the incompatibilities
between the 2009.08 code base and main-line, the boot
script was re-named from 6q_bootscript to 6x_bootscript in
the process.

It also generates a U-Boot binary for you, but doesn't
upgrade it in SPI-NOR.

See this post for details:
	http://boundarydevices.com/switching-u-boot-versions-on-i-mx6/

So to get past this, you need to program the file 'u-boot.imx' from
your SD card, and this is done through the 'upgradeu' command:

	U-Boot > run upgradeu

Unfortunately, the command incompatibilities are in the 'upgradeu'
process as well, so this will fail for you until you copy the
script file '6q_upgrade' from this package:
	http://commondatastorage.googleapis.com/boundarydevices.com
/6q_upgrade-20121109.zip

Note that you only need to copy the one file '6q_upgrade' from that
package into the Boot partition. You should already have a
u-boot.imx file produced by Yocto that is relatively recent.

Finally, the environment variables changed between the two
code bases. To restore them to factory default, you can use
the 'clearenv' command:
	U-Boot > run clearenv.

So, to re-cap:

1.	Copy 6q_upgrade from the 6q_upgrade-20121109.zip package
	into the boot partition of your SD card,
2.	Boot the device and run these commands:
	U-Boot > run upgradeu
	U-Boot > run clearenv
	U-Boot > reset
3.	Enjoy!

Regards,


Eric