IMAP_ADDR on PPC 8xx

[Dan Malek]

On May 10, 2006, at 12:49 PM, Walter L. Wimer III wrote:

> FYI, here's a table from the "MPC885ADS PowerQUICC(tm) Application
> Development System User's Guide", available on Freescale's website.
> This table seems to confirm how they've configured their U-Boot -- the
> IMMR is set to 0x02200000...

Freescale never ported U-Boot to the MPC855ADS platform, and
I don't believe it came with any software at all.  This IMMR value was
chosen to be backward compatible with some old software tools to
get a compact address space without the need of using the MMU,
long before we had Linux running on the platform.

> This may be fine for non-Linux purposes, but it looks like we need to
> spread some gospel to Freescale regarding the correct IMMR address for
> U-Boot / Linux....

I think you better be pointing fingers at the clueless person that
provided the software you have, as it didn't come from Freescale nor
any of the public U-Boot sources.

Thanks.

	-- Dan