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

Frank Bruno frank.bruno.lists at gmail.com
Tue Dec 4 16:04:31 CET 2007


Hi All,

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.

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?

Thanks
Frank
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