diff options
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/lib/cache.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c index a2277231ba1..30f045a864b 100644 --- a/arch/arc/lib/cache.c +++ b/arch/arc/lib/cache.c @@ -49,10 +49,12 @@ void icache_disable(void) void invalidate_icache_all(void) { -#ifndef CONFIG_SYS_ICACHE_OFF + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_IC_BUILD) & CACHE_VER_NUM_MASK)) + return; + /* Any write to IC_IVIC register triggers invalidation of entire I$ */ write_aux_reg(ARC_AUX_IC_IVIC, 1); -#endif /* CONFIG_SYS_ICACHE_OFF */ } int dcache_status(void) @@ -156,10 +158,12 @@ void invalidate_dcache_range(unsigned long start, unsigned long end) void invalidate_dcache_all(void) { -#ifndef CONFIG_SYS_DCACHE_OFF + /* If no cache in CPU exit immediately */ + if (!(read_aux_reg(ARC_BCR_DC_BUILD) & CACHE_VER_NUM_MASK)) + return; + /* Write 1 to DC_IVDC register triggers invalidation of entire D$ */ write_aux_reg(ARC_AUX_DC_IVDC, 1); -#endif /* CONFIG_SYS_DCACHE_OFF */ } void flush_cache(unsigned long start, unsigned long size) |