From 0dd421f27274008237824bdb96bf17471671d022 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Wed, 25 Jun 2014 09:18:19 +0200 Subject: [PATCH] arm: imx6: add cpu lowlevel init function Enables all relevant errata workarounds for the i.MX6 SoC. Signed-off-by: Lucas Stach Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/Makefile | 1 + arch/arm/mach-imx/cpu_init.c | 27 ++++++++++++++++++++++++ arch/arm/mach-imx/include/mach/generic.h | 2 ++ 3 files changed, 30 insertions(+) create mode 100644 arch/arm/mach-imx/cpu_init.c diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 03e5b102f..1d311a417 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -22,3 +22,4 @@ obj-$(CONFIG_BAREBOX_UPDATE) += imx-bbu-internal.o obj-$(CONFIG_BAREBOX_UPDATE_IMX_EXTERNAL_NAND) += imx-bbu-external-nand.o obj-$(CONFIG_BAREBOX_UPDATE_IMX6_NAND) += imx6-bbu-nand.o pbl-y += esdctl.o +lwl-y += cpu_init.o diff --git a/arch/arm/mach-imx/cpu_init.c b/arch/arm/mach-imx/cpu_init.c new file mode 100644 index 000000000..68eacf7a6 --- /dev/null +++ b/arch/arm/mach-imx/cpu_init.c @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2014 Lucas Stach, Pengutronix + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include + +void imx6_cpu_lowlevel_init(void) +{ + arm_cpu_lowlevel_init(); + + enable_arm_errata_742230_war(); + enable_arm_errata_743622_war(); + enable_arm_errata_751472_war(); + enable_arm_errata_761320_war(); + enable_arm_errata_794072_war(); +} diff --git a/arch/arm/mach-imx/include/mach/generic.h b/arch/arm/mach-imx/include/mach/generic.h index 506b1daaa..505a54268 100644 --- a/arch/arm/mach-imx/include/mach/generic.h +++ b/arch/arm/mach-imx/include/mach/generic.h @@ -33,6 +33,8 @@ int imx51_devices_init(void); int imx53_devices_init(void); int imx6_devices_init(void); +void imx6_cpu_lowlevel_init(void); + /* There's a off-by-one betweem the gpio bank number and the gpiochip */ /* range e.g. GPIO_1_5 is gpio 5 under linux */ #define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr))