[ECOS] Memory Mapped register access in 80321

Mark Salter msalter@redhat.com
Sun Jun 15 02:33:00 GMT 2003


>>>>> normanlaose  writes:

> Hello Mark,
>       Thanks for the response.

>       I am curious. In Linux, I have to access these address
> using virtual address got from the ioremap(). I thought there
> was concept of virtual address in Redboot. Please correct me.

RedBoot does use virtual addresses. Almost everything on the
'321 boards are identity mapped. Take a look at:

  http://sources.redhat.com/ecos/docs-latest/ref/iq80321.html

scroll down to the bottom for tables showing the physical
and virtual addresses used by eCos and RedBoot.

--Mark

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