Writing U-Boot to SD card for imx28evk

[cmcqueen1975]

I'm building Yocto core-image-minimal for imx28evk, from denzil branch. It's building successfully. I thought I'd like to try using the U-Boot built from Yocto. I tried:

sudo dd if=u-boot-imx28evk.mxsboot-sdcard of=/dev/sdc

When I try booting from it, U-Boot doesn't run. I just get:

0x80502008

Is the u-boot-imx28evk.mxsboot-sdcard file suitable to dd directly to the SD card, or does it have to be written at some offset, perhaps with some other partitions set up?

[cmcqueen1975]

I'll answer my own question: I found U-Boot README.mx28_common which says to create a partition 1, starting at sector 2048, of size 1 MB, with type 0x53. E.g.:

sudo fdisk /dev/sdc
o       # to erase partition table
n       # new partition
p       # primary
1       # partition 1
2048   # start sector 2048
+1M     # 1 MB size
t 1     # change type of partition 1
53      # type 0x53
w       # write the partition table to the SD card

Then dd the file onto that partition.

sudo dd if=u-boot-imx28evk.mxsboot-sdcard of=/dev/sdc1