Subject: Re: MMU problems (Was: JavaStation w/ OBP3 - some progress)
To: None <port-sparc@netbsd.org>
From: Valeriy E. Ushakov <uwe@ptc.spbu.ru>
List: port-sparc
Date: 04/12/2001 01:17:46
On Wed, Apr 11, 2001 at 15:38:08 -0400, Pete Zaitcev wrote:
> First thing that stands out is that you did not quote
> "f0007000 20 dump" or equivalent before the jump.
As I wrote earlier today, I was stomping on OBP (the entry point
passed on "boot" is 0xf003381c). Dump was consistent. Before L1
entry is updated it was some part of OBP (forth names &c), and right
after L1 entry was written the box was extremely unstable, which is
not surprising (now that I know).
> Second, before you start, visit nodes "virtual-memory" and "memory"
> and get ".properties" on paper. That will give you an idea of
> virtual addresses and physical memory that you must not touch.
For /memory (2x16Mb in the first bank)
available 00000000 00000000 01fab000
For /virtual-memory
existing 00000000 00000000 80000000
00000000 80000000 80000000
available 00000000 fffff000 00001000
00000000 00000000 f0000000
00000000 f0040000 0ffa3000
Thanks for your time and patience.
SY, Uwe
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