diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2011-10-12 20:16:31 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-10-16 14:22:19 -0400 |
| commit | 8e5c1edadfe30656b380039ff58702a84cd738d1 (patch) | |
| tree | 40a24ad4422fd49e53abb277a224b61eb2d4334c /arch/blackfin | |
| parent | 8d80d057537fd536c8cc2252dc18ec3dea9a47e2 (diff) | |
Blackfin: define CONFIG_SYS_CACHELINE_SIZE
Common U-Boot API wants this define, so import asm/cache.h from Linux
to provide suitable defines.
Acked-by: Anton Staaf <robotboy@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/include/asm/blackfin_local.h | 1 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/cache.h | 70 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/config.h | 3 |
3 files changed, 74 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/blackfin_local.h b/arch/blackfin/include/asm/blackfin_local.h index 27034d3d0..71207b697 100644 --- a/arch/blackfin/include/asm/blackfin_local.h +++ b/arch/blackfin/include/asm/blackfin_local.h @@ -49,6 +49,7 @@ #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) #include <asm/linkage.h> +#include <asm/cache.h> #ifndef __ASSEMBLY__ # ifdef SHARED_RESOURCES diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h new file mode 100644 index 000000000..482e4b52b --- /dev/null +++ b/arch/blackfin/include/asm/cache.h @@ -0,0 +1,70 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __ARCH_BLACKFIN_CACHE_H +#define __ARCH_BLACKFIN_CACHE_H + +#include <asm/linkage.h> /* for asmlinkage */ + +/* + * Bytes per L1 cache line + * Blackfin loads 32 bytes for cache + */ +#define L1_CACHE_SHIFT 5 +#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) +#define SMP_CACHE_BYTES L1_CACHE_BYTES + +#define ARCH_DMA_MINALIGN L1_CACHE_BYTES + +#ifdef CONFIG_SMP +#define __cacheline_aligned +#else +#define ____cacheline_aligned + +/* + * Put cacheline_aliged data to L1 data memory + */ +#ifdef CONFIG_CACHELINE_ALIGNED_L1 +#define __cacheline_aligned \ + __attribute__((__aligned__(L1_CACHE_BYTES), \ + __section__(".data_l1.cacheline_aligned"))) +#endif + +#endif + +/* + * largest L1 which this arch supports + */ +#define L1_CACHE_SHIFT_MAX 5 + +#if defined(CONFIG_SMP) && \ + !defined(CONFIG_BFIN_CACHE_COHERENT) +# if defined(CONFIG_BFIN_EXTMEM_ICACHEABLE) || defined(CONFIG_BFIN_L2_ICACHEABLE) +# define __ARCH_SYNC_CORE_ICACHE +# endif +# if defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) || defined(CONFIG_BFIN_L2_DCACHEABLE) +# define __ARCH_SYNC_CORE_DCACHE +# endif +#ifndef __ASSEMBLY__ +asmlinkage void __raw_smp_mark_barrier_asm(void); +asmlinkage void __raw_smp_check_barrier_asm(void); + +static inline void smp_mark_barrier(void) +{ + __raw_smp_mark_barrier_asm(); +} +static inline void smp_check_barrier(void) +{ + __raw_smp_check_barrier_asm(); +} + +void resync_core_dcache(void); +void resync_core_icache(void); +#endif +#endif + + +#endif diff --git a/arch/blackfin/include/asm/config.h b/arch/blackfin/include/asm/config.h index 53af310ec..1a8de4906 100644 --- a/arch/blackfin/include/asm/config.h +++ b/arch/blackfin/include/asm/config.h @@ -21,6 +21,9 @@ # define CONFIG_BFIN_SCRATCH_REG retn #endif +/* U-Boot wants this config name */ +#define CONFIG_SYS_CACHELINE_SIZE L1_CACHE_BYTES + /* Make sure the structure is properly aligned */ #if ((CONFIG_SYS_GBL_DATA_ADDR & -4) != CONFIG_SYS_GBL_DATA_ADDR) # error CONFIG_SYS_GBL_DATA_ADDR: must be 4 byte aligned |