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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:04 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:03 +0200 |
commit | ea0364f1bbfed1e3ea711147420875cf338fe77a (patch) | |
tree | 15c051bc4d2e94c1661c73e1b87c22c7beda7c24 /arch/m68k/lib/cache.c | |
parent | 89f39e177e7b0152aa1d3152baa25d986e36cdcf (diff) | |
download | u-boot-imx-ea0364f1bbfed1e3ea711147420875cf338fe77a.zip u-boot-imx-ea0364f1bbfed1e3ea711147420875cf338fe77a.tar.gz u-boot-imx-ea0364f1bbfed1e3ea711147420875cf338fe77a.tar.bz2 |
Move lib_$ARCH directories to arch/$ARCH/lib
Also move lib_$ARCH/config.mk to arch/$ARCH/config.mk
This change is intended to clean up the top-level directory structure
and more closely mimic Linux's directory organization.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'arch/m68k/lib/cache.c')
-rw-r--r-- | arch/m68k/lib/cache.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/arch/m68k/lib/cache.c b/arch/m68k/lib/cache.c new file mode 100644 index 0000000..ed88178 --- /dev/null +++ b/arch/m68k/lib/cache.c @@ -0,0 +1,150 @@ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 <common.h> +#include <asm/immap.h> +#include <asm/cache.h> + +volatile int *cf_icache_status = (int *)ICACHE_STATUS; +volatile int *cf_dcache_status = (int *)DCACHE_STATUS; + +void flush_cache(ulong start_addr, ulong size) +{ + /* Must be implemented for all M68k processors with copy-back data cache */ +} + +int icache_status(void) +{ + return *cf_icache_status; +} + +int dcache_status(void) +{ + return *cf_dcache_status; +} + +void icache_enable(void) +{ + icache_invalid(); + + *cf_icache_status = 1; + +#ifdef CONFIG_CF_V4 + __asm__ __volatile__("movec %0, %%acr2"::"r"(CONFIG_SYS_CACHE_ACR2)); + __asm__ __volatile__("movec %0, %%acr3"::"r"(CONFIG_SYS_CACHE_ACR3)); +#elif defined(CONFIG_CF_V4e) + __asm__ __volatile__("movec %0, %%acr6"::"r"(CONFIG_SYS_CACHE_ACR6)); + __asm__ __volatile__("movec %0, %%acr7"::"r"(CONFIG_SYS_CACHE_ACR7)); +#else + __asm__ __volatile__("movec %0, %%acr0"::"r"(CONFIG_SYS_CACHE_ACR0)); + __asm__ __volatile__("movec %0, %%acr1"::"r"(CONFIG_SYS_CACHE_ACR1)); +#endif + + __asm__ __volatile__("movec %0, %%cacr"::"r"(CONFIG_SYS_CACHE_ICACR)); +} + +void icache_disable(void) +{ + u32 temp = 0; + + *cf_icache_status = 0; + icache_invalid(); + +#ifdef CONFIG_CF_V4 + __asm__ __volatile__("movec %0, %%acr2"::"r"(temp)); + __asm__ __volatile__("movec %0, %%acr3"::"r"(temp)); +#elif defined(CONFIG_CF_V4e) + __asm__ __volatile__("movec %0, %%acr6"::"r"(temp)); + __asm__ __volatile__("movec %0, %%acr7"::"r"(temp)); +#else + __asm__ __volatile__("movec %0, %%acr0"::"r"(temp)); + __asm__ __volatile__("movec %0, %%acr1"::"r"(temp)); + +#endif +} + +void icache_invalid(void) +{ + u32 temp; + + temp = CONFIG_SYS_ICACHE_INV; + if (*cf_icache_status) + temp |= CONFIG_SYS_CACHE_ICACR; + + __asm__ __volatile__("movec %0, %%cacr"::"r"(temp)); +} + +/* + * data cache only for ColdFire V4 such as MCF547x_8x, MCF5445x + * the dcache will be dummy in ColdFire V2 and V3 + */ +void dcache_enable(void) +{ + dcache_invalid(); + *cf_dcache_status = 1; + +#ifdef CONFIG_CF_V4 + __asm__ __volatile__("movec %0, %%acr0"::"r"(CONFIG_SYS_CACHE_ACR0)); + __asm__ __volatile__("movec %0, %%acr1"::"r"(CONFIG_SYS_CACHE_ACR1)); +#elif defined(CONFIG_CF_V4e) + __asm__ __volatile__("movec %0, %%acr4"::"r"(CONFIG_SYS_CACHE_ACR4)); + __asm__ __volatile__("movec %0, %%acr5"::"r"(CONFIG_SYS_CACHE_ACR5)); + +#endif + + __asm__ __volatile__("movec %0, %%cacr"::"r"(CONFIG_SYS_CACHE_DCACR)); +} + +void dcache_disable(void) +{ + u32 temp = 0; + + *cf_dcache_status = 0; + dcache_invalid(); + + __asm__ __volatile__("movec %0, %%cacr"::"r"(temp)); + +#ifdef CONFIG_CF_V4 + __asm__ __volatile__("movec %0, %%acr0"::"r"(temp)); + __asm__ __volatile__("movec %0, %%acr1"::"r"(temp)); +#elif defined(CONFIG_CF_V4e) + __asm__ __volatile__("movec %0, %%acr4"::"r"(temp)); + __asm__ __volatile__("movec %0, %%acr5"::"r"(temp)); + +#endif +} + +void dcache_invalid(void) +{ +#ifdef CONFIG_CF_V4 + u32 temp; + + temp = CONFIG_SYS_DCACHE_INV; + if (*cf_dcache_status) + temp |= CONFIG_SYS_CACHE_DCACR; + if (*cf_icache_status) + temp |= CONFIG_SYS_CACHE_ICACR; + + __asm__ __volatile__("movec %0, %%cacr"::"r"(temp)); +#endif +} |