Re: [U-Boot] mmc erase fails from U-Boot command line

Hi Eric,

On Fri, Dec 4, 2015 at 8:42 PM, Eric Nelson eric@nelint.com wrote:

I've figured out a way to repeat this on my machine.

If I write 0xff's to the eMMC blocks, then issue an erase for the same, I get the problem with each MMC_ERASE command.

I've also found something that fixes the issue in my testing.

Changing SECURE_ERASE to 0 from 0x80000000 in include/mmc.h allows things to function for me.

Page 115 of the JEDEC eMMC 4.5 spec says that bit 31 is obsolete and should be zero: http://www.jedec.org/sites/default/files/docs/jesd84-B45.pdf

Hector and Fabio, can you test that change?

Please advise,

That sounds promising. I will test it on Monday when I get access to a revC4 board.

Thanks a lot!