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Booting AM437x using eMMC

Manan Patel1
Intellectual 390 points

Hi,

I'm trying to boot AM437x EVM from the eMMC. I have successfully added pinmux in u-boot and linux for eMMC and disabled NAND. Now I can partition eMMC from linux and load data to it.

So to boot from eMMC, I did the following things:

  1. Partition the eMMC exactly as the SDcard by looking at the create_sdcard.sh script. I confirmed that partitions on both the devices are the same.
  2. Copied MLO, u-boot to the boot partition. (Not bothering with linux image yet)
  3. Changed sys-boot[4:0] to 00001b so that MMC1 is in the boot sequence.
  4. Pulled the plug out and plugged it in again. 

The above steps didn't boot-up for me. I referred to a couple of debrick.sh scripts and the SDCard -> eMMC programming procedure for am335x based boards before I concluded on the above steps. 

My question is - Am I missing something in the above steps? Does the u-boot need to be built differently to support eMMC boot of the SPL/u-boot (not linux yet)? Can you please help me with the changes?


Kindly help.

Thanks,

Manan