[U-Boot-Users] PPC440EPx: Sequoia board config (EBC0)

Stefan Roese sr at denx.de
Tue Dec 4 16:15:03 CET 2007

Hi Frank,

On Tuesday 04 December 2007, Frank Bruno wrote:
> I am working on a port of u-boot to a PPC440EPx custom board based off of
> the Sequoia reference design.
> I have noticed a couple of areas that the stock sequoia u-boot sources
> configure the EBC0 & EBC3 with reserved bits, namely the B0CR with 0xDA000,
> where bits 19:31 are reserved & B0AP with 0x03017200, where bits 9:11 are
> reserved.

You're probably just mixing up the bit notation. MSB is bit 0 and LSB is bit 
31. Could it be that you thought it was the other way around?

> I have searched for an ERRATA in the datasheets but do not see anything
> with reference to the EBC peripheral bus.
> Can anyone explain why these bits are set? or has the info for their usage?

Please see above. Hope this helps.

Best regards,

DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de

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