Hi,
I rebuild the imx53qsb completely and boot failed also as bellow :

and i do not change anything about for yocto dora except DL_DIR to redirect to "DL_DIR = "${TOPDIR}/../../downloads""

U-Boot 2013.10-rc3 (Oct 25 2013 - 13:28:32)

Board: MX53 LOCO
I2C:   ready
DRAM:  1 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
MMC: no card present
MMC init failed
Using default environment

In:    serial
Out:   serial
Err:   serial
CPU:   Freescale i.MX53 family rev2.1 at 1000 MHz
Reset cause: POR
Net:   FEC
Warning: failed to set MAC address

Hit any key to stop autoboot:  0 
MMC: no card present
mmc0(part 0) is current device
MMC: no card present
Booting from net ...
*** ERROR: `ethaddr' not set
*** ERROR: `ethaddr' not set
Wrong Image Format for bootm command
ERROR: can't get kernel image!
MX53LOCO U-Boot > 

BTW, my board is IMX53-START-R

Thanks,

- Jojo

在 2013年10月24日星期四，下午3:13，Eric Bénard 写道：

Hi Jojo,

Le Thu, 24 Oct 2013 12:46:12 +0800,
jojo <rjiejie@gmail.com> a écrit :
This board is supported by yocto project ?
yes

Anyone have any idea for this issue ?
don't change anything on the environment the image generated by Yocto
is ready to boot and not in sync with
i.MX53_START_Linux_BSP_UserGuide.pdf which is LTIB based.

Eric