From: Hua Ji <hji@netscreen.com>
To: linuxppc-user@lists.linuxppc.org,
linuxppc-embedded@lists.linuxppc.org, linux-mm@kvack.org
Subject: mtsr and mfsr?
Date: Thu, 7 Jun 2001 10:16:25 -0700 [thread overview]
Message-ID: <A33AEFDC2EC0D411851900D0B73EBEF766E100@NAPA> (raw)
Folks,
Need help, please. Thanks in advance.
I am working on a board with MPC 750 for an internal products development.
I currently can no problem set up the BATs and enable MMU for memory
management.
However, when I set up the segment registers, I am confused and stuck here.
I was trying to clear and write some values into those 15 sr registers by
using **mtsr**.
But looks like it doesn't work. The testing I did looks like follows:
-------------
#define RESET 0
li %r3, RESET;
sync
isync
mtsr sr0, %r3
isync
sync
mfsr %r3, sr0
bl uart_print
...
-------------
The console print-out shows that I didn't write into srs with the zero
value, except
sr1 and sr5. All the rest sr(s) value is still not back to zero.
Did I miss something?
Thanks,
Mike
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next reply other threads:[~2001-06-07 17:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-07 17:16 Hua Ji [this message]
2001-06-08 16:39 ` Tom Roberts
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