ARM: mx6: use common CPU errata config options

Now that U-Boot has common CONFIG_ options to work around some ARM CPU
errata, enable the relevant options on MX6, and remove the custom
lowlevel_init.S, since it's just duplicated code now.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Jason Liu <r64343@freescale.com>

arch/arm/cpu/armv7/Makefile

@@ -32,7 +32,7 @@ COBJS	+= cache_v7.o
 COBJS	+= cpu.o
 COBJS	+= syslib.o
 
-ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA),)
+ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6),)
 SOBJS	+= lowlevel_init.o
 endif
 

arch/arm/cpu/armv7/mx6/Makefile

@@ -28,7 +28,6 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(SOC).o
 
 COBJS	= soc.o clock.o
-SOBJS   = lowlevel_init.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))

arch/arm/cpu/armv7/mx6/lowlevel_init.S

@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-.section ".text.init", "x"
-
-#include <linux/linkage.h>
-
-.macro init_arm_errata
-	/* ARM erratum ID #743622 */
-	mrc	p15, 0, r10, c15, c0, 1		/* read diagnostic register */
-	orr	r10, r10, #1 << 6		/* set bit #6 */
-	/* ARM erratum ID #751472 */
-	orr	r10, r10, #1 << 11		/* set bit #11 */
-	mcr	p15, 0, r10, c15, c0, 1		/* write diagnostic register */
-.endm
-
-ENTRY(lowlevel_init)
-	init_arm_errata
-	mov pc, lr
-ENDPROC(lowlevel_init)

arch/arm/cpu/armv7/mx6/soc.c

@@ -205,3 +205,7 @@ const struct boot_mode soc_boot_modes[] = {
 	{"esdhc4",	MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
 	{NULL,		0},
 };
+
+void s_init(void)
+{
+}

include/configs/mx6_common.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __MX6_COMMON_H
+#define __MX6_COMMON_H
+
+#define CONFIG_ARM_ERRATA_743622
+#define CONFIG_ARM_ERRATA_751472
+
+#endif

include/configs/mx6qarm2.h

@@ -24,6 +24,9 @@
 
 #define CONFIG_MX6
 #define CONFIG_MX6Q
+
+#include "mx6_common.h"
+
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
 

include/configs/mx6qsabre_common.h

@@ -19,6 +19,9 @@
 
 #define CONFIG_MX6
 #define CONFIG_MX6Q
+
+#include "mx6_common.h"
+
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
 

include/configs/mx6qsabrelite.h

@@ -24,6 +24,9 @@
 
 #define CONFIG_MX6
 #define CONFIG_MX6Q
+
+#include "mx6_common.h"
+
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO