ARM: rmobile: Fix to enable icache early in Gen3

This patch fixes the problem that u-boot will not start unless icache is
enabled early.

Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>

diff --git a/arch/arm/mach-rmobile/cpu_info.c b/arch/arm/mach-rmobile/cpu_info.c
index 65a9ca8..aa5be52 100644 (file)
--- a/arch/arm/mach-rmobile/cpu_info.c
+++ b/arch/arm/mach-rmobile/cpu_info.c
@@ -7,8 +7,6 @@
 #include <asm/io.h>
 #include <linux/ctype.h>
 
-/* R-Car Gen3 caches are enabled in memmap-gen3.c */
-#ifndef CONFIG_RCAR_GEN3
 #ifdef CONFIG_ARCH_CPU_INIT
 int arch_cpu_init(void)
 {
@@ -17,6 +15,8 @@ int arch_cpu_init(void)
 }
 #endif
 
+/* R-Car Gen3 D-cache is enabled in memmap-gen3.c */
+#ifndef CONFIG_RCAR_GEN3
 #ifndef CONFIG_SYS_DCACHE_OFF
 void enable_caches(void)
 {

diff --git a/arch/arm/mach-rmobile/memmap-gen3.c b/arch/arm/mach-rmobile/memmap-gen3.c
index 3c0f354..1a9eb72 100644 (file)
--- a/arch/arm/mach-rmobile/memmap-gen3.c
+++ b/arch/arm/mach-rmobile/memmap-gen3.c
@@ -140,6 +140,8 @@ void enable_caches(void)
                gen3_mem_map[i].attrs = 0;
        }
 
-       icache_enable();
+       if (!icache_status())
+               icache_enable();
+
        dcache_enable();
 }