As part of disabling caches MMU as well gets disabled. But MMU is not available on all armv7 cores like R5F. So disable MMU only if it is available.
Signed-off-by: Lokesh Vutla lokeshvutla@ti.com --- arch/arm/lib/cache-cp15.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm/lib/cache-cp15.c b/arch/arm/lib/cache-cp15.c index b2913e8165..47c223917a 100644 --- a/arch/arm/lib/cache-cp15.c +++ b/arch/arm/lib/cache-cp15.c @@ -235,12 +235,18 @@ static void cache_disable(uint32_t cache_bit) /* if cache isn;t enabled no need to disable */ if ((reg & CR_C) != CR_C) return; +#ifdef CONFIG_SYS_ARM_MMU /* if disabling data cache, disable mmu too */ cache_bit |= CR_M; +#endif } reg = get_cr();
+#ifdef CONFIG_SYS_ARM_MMU if (cache_bit == (CR_C | CR_M)) +#elif defined(CONFIG_SYS_ARM_MPU) + if (cache_bit == CR_C) +#endif flush_dcache_all(); set_cr(reg & ~cache_bit); }