Cortex A9 vexpress MMC I/O problems.

Scott Bambrough scott.bambrough at
Tue Oct 12 10:31:05 UTC 2010

On Tue, 2010-10-12 at 11:17 +0100, Dave Martin wrote:
> Sincle I believe this is a known issue with the hardware, it could be
> wise to streamline the putting of bootloader and filesystem on
> separate devices.
> Manually at least, this wasn't too hard: I ran linaro-media-create,
> copied the boot images onto a separate SD card to install them, then
> booted with the real card in a card reader attached via USB -- this
> works much better+faster than straight booting from the on-board MMC
> slot, and has the advantage that SDHC cards (or USB stick / HDD etc.)
> can be used.  Especially if we configure the root device into the
> bootloader as root=UUID=<uuid>, Linux should be able to find the root
> fs wherever it is.
> Is this feasible? 

This is what is being worked on ATM.  


Scott Bambrough <scott.bambrough at>
Linaro Infrastructure Team Lead

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