| 1 | /* |
| 2 | * linux/arch/m68k/coldfire/cache.c |
| 3 | * |
| 4 | * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved. |
| 5 | * Matt Waddel Matt.Waddel@freescale.com |
| 6 | * Kurt Mahan kmahan@freescale.com |
| 7 | * Jason Jin Jason.Jin@freescale.com |
| 8 | * Shrek Wu B16972@freescale.com |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <asm/cfcache.h> |
| 18 | #include <asm/coldfire.h> |
| 19 | #include <asm/system.h> |
| 20 | |
| 21 | /* Cache Control Reg shadow reg */ |
| 22 | unsigned long shadow_cacr; |
| 23 | |
| 24 | /** |
| 25 | * cacr_set - Set the Cache Control Register |
| 26 | * @x Value to set |
| 27 | */ |
| 28 | void cacr_set(unsigned long x) |
| 29 | { |
| 30 | shadow_cacr = x; |
| 31 | |
| 32 | __asm__ __volatile__ ("movec %0, %%cacr" |
| 33 | : /* no outputs */ |
| 34 | : "r" (shadow_cacr)); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * cacr_get - Get the current value of the Cache Control Register |
| 39 | * |
| 40 | * @return CACR value |
| 41 | */ |
| 42 | unsigned long cacr_get(void) |
| 43 | { |
| 44 | return shadow_cacr; |
| 45 | } |
| 46 | |
