diff options
Diffstat (limited to 'arch/sh/mm')
| -rw-r--r-- | arch/sh/mm/Makefile | 1 | ||||
| -rw-r--r-- | arch/sh/mm/cache-shx3.c | 35 | ||||
| -rw-r--r-- | arch/sh/mm/cache.c | 7 |
3 files changed, 43 insertions, 0 deletions
diff --git a/arch/sh/mm/Makefile b/arch/sh/mm/Makefile index c73018a9972..53f7c684afb 100644 --- a/arch/sh/mm/Makefile +++ b/arch/sh/mm/Makefile @@ -10,6 +10,7 @@ cacheops-$(CONFIG_CPU_SH3) := cache-sh3.o cacheops-$(CONFIG_CPU_SH4) := cache-sh4.o flush-sh4.o cacheops-$(CONFIG_CPU_SH5) := cache-sh5.o flush-sh4.o cacheops-$(CONFIG_SH7705_CACHE_32KB) += cache-sh7705.o +cacheops-$(CONFIG_CPU_SHX3) += cache-shx3.o obj-y += $(cacheops-y) diff --git a/arch/sh/mm/cache-shx3.c b/arch/sh/mm/cache-shx3.c new file mode 100644 index 00000000000..65936c4fef0 --- /dev/null +++ b/arch/sh/mm/cache-shx3.c @@ -0,0 +1,35 @@ +/* + * arch/sh/mm/cache-shx3.c - SH-X3 optimized cache ops + * + * Copyright (C) 2010 Paul Mundt + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/io.h> +#include <asm/cache.h> + +#define CCR_CACHE_SNM 0x40000 /* Hardware-assisted synonym avoidance */ +#define CCR_CACHE_IBE 0x1000000 /* ICBI broadcast */ + +void __init shx3_cache_init(void) +{ + unsigned int ccr; + + ccr = __raw_readl(CCR); + + if (boot_cpu_data.dcache.n_aliases) + ccr |= CCR_CACHE_SNM; + +#ifdef CONFIG_SMP + /* + * Broadcast I-cache block invalidations by default. + */ + ccr |= CCR_CACHE_IBE; +#endif + + writel_uncached(ccr, CCR); +} diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c index 0f4095d7ac8..ba401d137bb 100644 --- a/arch/sh/mm/cache.c +++ b/arch/sh/mm/cache.c @@ -334,6 +334,13 @@ void __init cpu_cache_init(void) extern void __weak sh4_cache_init(void); sh4_cache_init(); + + if ((boot_cpu_data.type == CPU_SH7786) || + (boot_cpu_data.type == CPU_SHX3)) { + extern void __weak shx3_cache_init(void); + + shx3_cache_init(); + } } if (boot_cpu_data.family == CPU_FAMILY_SH5) { |