diff options
Diffstat (limited to 'arch/mips/lib/cache.c')
-rw-r--r-- | arch/mips/lib/cache.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/mips/lib/cache.c b/arch/mips/lib/cache.c index 1d14fc487e..d56fd1e0f4 100644 --- a/arch/mips/lib/cache.c +++ b/arch/mips/lib/cache.c @@ -175,3 +175,23 @@ void invalidate_dcache_range(ulong start_addr, ulong stop) /* ensure cache ops complete before any further memory accesses */ sync(); } + +int dcache_status(void) +{ + unsigned int cca = read_c0_config() & CONF_CM_CMASK; + return cca != CONF_CM_UNCACHED; +} + +void dcache_enable(void) +{ + puts("Not supported!\n"); +} + +void dcache_disable(void) +{ + /* change CCA to uncached */ + change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED); + + /* ensure the pipeline doesn't contain now-invalid instructions */ + instruction_hazard_barrier(); +} |