[U-Boot] [PATCH RFC 0/2] dcache on ARM

[Alessandro Rubini]

Hello Nick.

> On TI DA830, the 1.0 & 1.1 revision of the silicon have a data caching
> bug. You can use data caching, but only in write thru' mode.

I see. So instead of both C and B you just need to C bit set in the
page table, and no B.

I propose to allow an extra option for write-back, leaving
write-through as the default. This matches the blackfin, which has
CONFIG_DCACHE_WB as an option, and leaves a safer default for those
who won't explicitly require WB policy.

Could you please confirm my patch works on that board after changing
the magic bits from 0x1e to 0x1a ? (I'll use symbolic constants
anyways in V2, this was just a quick RFC to see if the approach is
acceptable).

/alessandro