armv7: ls102xa: Enable I-Cache to speed up the boot time

Enable the I-Cache to speed up the boot time, especailly for the NOR
boot, currently it takes about 15 seconds from power up to the U-Boot
prompt, and with the I-Cache enabled it only takes around 2.5 seconds.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/arch/arm/cpu/armv7/ls102xa/cpu.c b/arch/arm/cpu/armv7/ls102xa/cpu.c
index ce472aa..c6a39aa 100644 (file)
--- a/arch/arm/cpu/armv7/ls102xa/cpu.c
+++ b/arch/arm/cpu/armv7/ls102xa/cpu.c
@@ -316,6 +316,8 @@ int arch_cpu_init(void)
        struct ccsr_scfg *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
        u32 state;
 
+       icache_enable();
+
        /*
         * The RCPM FSM state may not be reset after power-on.
         * So, reset them.