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arm: imx6: add cpu lowlevel init function 

Enables all relevant errata workarounds for the
i.MX6 SoC.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Lucas Stach 2014-06-25 09:18:19 +02:00 committed by Sascha Hauer
parent 2412f46dd3
commit 0dd421f272
3 changed files with 30 additions and 0 deletions
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1
arch/arm/mach-imx/Makefile
View File

@ -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

27
arch/arm/mach-imx/cpu_init.c Normal file
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@ -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 <asm/barebox-arm-head.h>
#include <asm/errata.h>
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();
}

2
arch/arm/mach-imx/include/mach/generic.h
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@ -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))