Messages in this thread | | | Date | Sun, 9 Jun 2013 19:30:06 +0200 | From | Pavel Machek <> | Subject | Re: N900 device tree conversion: how to do first step |
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On Sun 2013-06-09 03:59:44, Pavel Machek wrote: > Hi! > > I'd like to convert Nokia N900 to device tree. > > Unfortunately, serial port is not easily available (very special cable > would be needed, does someone know where to get one?) and I don't have > BDI (and very special cable would be needed, too). > > So I tried doing very small first step, hoping that I get booting > system... obviously I did not. > > I tried formally switching to device tree while still booting using > hardcoded functions. No luck. Does anyone see what I did wrong? > > Is it possible that n900 has its main memory somewhere else than > 0x80000000?
Interesting. It seems that memory setup from atags is indeed 0x8000 0000 size 0x0800 0000 0x8800 0000 size 0x0800 0000
. But hopefully that's just complicated way of saying 0x8000 0000 size 0x1000 0000 .
Anyway, I now see problem with my reasoning: kernel is full of
if (of_have_populated_dt())
tests, so it is impossible to switch to device tree, and still expect old-style init to work :-(.
Pavel
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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