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Problem when the CPU cache is turned on

To: "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>
Subject: Problem when the CPU cache is turned on
From: priya <priya@procsys.com>
Date: Wed, 29 Dec 2004 10:22:22 +0530
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Hi,
Iam trying to bring up a custom board
with RM5231A MIPS processor and IT8172
companion chip. Right now i have an
issue related to running Linux 2.4.25 on
MIPS with cache enabled.

When i run the kernel with CPU Cache
enabled, i get the following error
messages.
A. "Unhandled kernel unaligned access or
invalid instruction in
unaligned.c::emulate_load_store_insn,
line 493:"
B. "Reserved instruction in kernel code
in traps.c::do_ri, line 663:"
C. "Unable to handle kernel paging
request at virtual address 00000000

These errors happen when i run fsck, vi
or a simple du command.

When i trun on the "Run uncached"
option  these errors disapper.

I do not know where to start debugging.
Can any one tell me what could be the
problem when the cache is turned on.

regards
priya




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