From f539c8a4a7a590e1933a7e21d5771528db1d88b7 Mon Sep 17 00:00:00 2001 From: York Sun Date: Mon, 6 Mar 2017 09:02:32 -0800 Subject: [PATCH] armv8: ls2080a: Drop early MMU for SPL build Early MMU improves performance especially on emulators. However, the early MMU is left enabled after the first stage of SPL boot. Instead of flushing D-cache and dealing with re-enabling MMU for the second stage U-Boot, disabling it for SPL build simplifies the process. The performance penalty is unnoticeable on the real hardware. As of now, SPL boot is not supported by existing emulators. So this should have no impact on emulators. Signed-off-by: York Sun --- arch/arm/cpu/armv8/fsl-layerscape/spl.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm/cpu/armv8/fsl-layerscape/spl.c b/arch/arm/cpu/armv8/fsl-layerscape/spl.c index 1dabdbb..73a8680 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/spl.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/spl.c @@ -45,9 +45,6 @@ void board_init_f(ulong dummy) { /* Clear global data */ memset((void *)gd, 0, sizeof(gd_t)); -#ifdef CONFIG_LS2080A - arch_cpu_init(); -#endif board_early_init_f(); timer_init(); #ifdef CONFIG_LS2080A