diff options
author | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:15 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2011-04-26 10:22:59 +0200 |
commit | 07f9479a40cc778bc1462ada11f95b01360ae4ff (patch) | |
tree | 0676cf38df3844004bb3ebfd99dfa67a4a8998f5 /arch/mn10300/kernel/gdb-cache.S | |
parent | 9d5e6bdb3013acfb311ab407eeca0b6a6a3dedbf (diff) | |
parent | cd2e49e90f1cae7726c9a2c54488d881d7f1cd1c (diff) |
Merge branch 'master' into for-next
Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.
Diffstat (limited to 'arch/mn10300/kernel/gdb-cache.S')
-rw-r--r-- | arch/mn10300/kernel/gdb-cache.S | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/arch/mn10300/kernel/gdb-cache.S b/arch/mn10300/kernel/gdb-cache.S deleted file mode 100644 index 1108badc3d32..000000000000 --- a/arch/mn10300/kernel/gdb-cache.S +++ /dev/null @@ -1,105 +0,0 @@ -############################################################################### -# -# MN10300 Low-level cache purging routines for gdbstub -# -# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. -# Written by David Howells (dhowells@redhat.com) -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public Licence -# as published by the Free Software Foundation; either version -# 2 of the Licence, or (at your option) any later version. -# -############################################################################### -#include <linux/sys.h> -#include <linux/linkage.h> -#include <asm/smp.h> -#include <asm/cache.h> -#include <asm/cpu-regs.h> -#include <asm/exceptions.h> -#include <asm/frame.inc> -#include <asm/serial-regs.h> - - .text - -############################################################################### -# -# GDB stub cache purge -# -############################################################################### - .type gdbstub_purge_cache,@function -ENTRY(gdbstub_purge_cache) - ####################################################################### - # read the addresses tagged in the cache's tag RAM and attempt to flush - # those addresses specifically - # - we rely on the hardware to filter out invalid tag entry addresses - mov DCACHE_TAG(0,0),a0 # dcache tag RAM access address - mov DCACHE_PURGE(0,0),a1 # dcache purge request address - mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of entries - -mn10300_dcache_flush_loop: - mov (a0),d0 - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 - or L1_CACHE_TAG_VALID,d0 # retain valid entries in the - # cache - mov d0,(a1) # conditional purge - -mn10300_dcache_flush_skip: - add L1_CACHE_BYTES,a0 - add L1_CACHE_BYTES,a1 - add -1,d1 - bne mn10300_dcache_flush_loop - -;; # unconditionally flush and invalidate the dcache -;; mov DCACHE_PURGE(0,0),a1 # dcache purge request address -;; mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of -;; # entries -;; -;; gdbstub_purge_cache__dcache_loop: -;; mov (a1),d0 # unconditional purge -;; -;; add L1_CACHE_BYTES,a1 -;; add -1,d1 -;; bne gdbstub_purge_cache__dcache_loop - - ####################################################################### - # now invalidate the icache - mov CHCTR,a0 - movhu (a0),a1 - - mov epsw,d1 - and ~EPSW_IE,epsw - nop - nop - - # disable the icache - and ~CHCTR_ICEN,d0 - movhu d0,(a0) - - # and wait for it to calm down - setlb - movhu (a0),d0 - btst CHCTR_ICBUSY,d0 - lne - - # invalidate - or CHCTR_ICINV,d0 - movhu d0,(a0) - - # wait for the cache to finish - mov CHCTR,a0 - setlb - movhu (a0),d0 - btst CHCTR_ICBUSY,d0 - lne - - # and reenable it - movhu a1,(a0) - movhu (a0),d0 # read back to flush - # (SIGILLs all over without this) - - mov d1,epsw - - ret [],0 - - .size gdbstub_purge_cache,.-gdbstub_purge_cache |