This is the mail archive of the
ecos-patches@sources.redhat.com
mailing list for the eCos project.
Re: EDB7312 - Linux booting
On Mon, 2003-02-10 at 22:53, Jonathan Larmour wrote:
> Ah I see, and otherwise Linux can't use that bottom of memory because
> CYGMEM_REGION_ram will be relative to that 0x2900 extra bit. Gotcha.
>
> In that case it's definitely better to let the platform just override. Too
> may weird conditions to worry about!
It's also very useful for platforms like the combination of an SA1110
and SDRAM chips which results into the following physical memory space:
2MB mem - 2MB hole - 2MB mem ... 2MB mem - 112MB hole - 2MB mem - ...
or more generally when virt(physaddr) != physaddr + good_offset
--
rnf