arm: caches: Disable mmu only if mmu is available

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>

diff --git a/arch/arm/lib/cache-cp15.c b/arch/arm/lib/cache-cp15.c
index b2913e8165a8c85ba473adb4f5abe7a210570364..47c223917a0298a2ca6e85a772d1599f4c78c9cf 100644 (file)
--- 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);
 }