Update of /cvsroot/linux-mips/linux/arch/mips/sibyte/sb1
In directory usw-pr-cvs1:/tmp/cvs-serv7520/sibyte/sb1
Added Files:
Makefile cache_err_handler.S
Log Message:
Cleanup Makefile crap and add support for Sibyte SB1250 / SWARM.
--- NEW FILE: Makefile ---
L_TARGET = sb1kern.a
OBJS-$(CONFIG_SB1_CACHE_ERROR) += cache_err_handler.o
include $(TOPDIR)/Rules.make
--- NEW FILE: cache_err_handler.S ---
/*
* Copyright (C) 2001 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/config.h>
#include <linux/threads.h>
#include <asm/asm.h>
#include <asm/cacheops.h>
#include <asm/current.h>
#include <asm/offset.h>
#include <asm/processor.h>
#include <asm/regdef.h>
#include <asm/cachectl.h>
#include <asm/mipsregs.h>
#include <asm/stackframe.h>
#define __ASSEMBLY__
#include <asm/bootinfo.h>
.text
/* Special Cache Error handler for SB1 for now*/
LEAF(except_vec2_sb1)
.set noat
.set mips0
/*
* This is a very bad place to be. Our cache error
* detection has triggered. If we have write-back data
* in the cache, we may not be able to recover. As a
* first-order desperate measure, turn off KSEG0 cacheing.
*/
.set push
.set mips64
.set reorder
# look for signature of spurious CErr
mfc0 k1,$26,0
lui k0,0x4000
bne k0,k1,real_cerr
mfc0 k1,$27,1
lui k0,0xffe0
and k1,k0,k1
lui k0,0x0200
bne k0,k1,real_cerr
# clear/unlock the registers
mtc0 zero,$26,0
mtc0 zero,$27,1
eret
# XXXXPK - this is a real error. set the LEDs and spin for now
real_cerr:
lui k0,0xb00A
li k1,'C'
sb k1,56(k0)
li k1,'E'
sb k1,48(k0)
li k1,'R'
sb k1,40(k0)
li k1,'R'
sb k1,32(k0)
2:
b 2b
.set pop
END(except_vec2_sb1)
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