arch: arm: move nmi to common location

The nmi_on_reset.S functions are used by all ARM platforms.  It
makes no sense to repeat the same code for all platforms.  Moving
the code from each SOC implementation to arch/arm/core.

The same treatment for the NMI_INIT() macro.  Moving it from a per
SOC implementation to the include/arch/arm/cortex_m/nmi.h.

Change-Id: I574d8880a44046cc7b9e1b635e80d6e83657b8c1
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>

arch/arm/core/cortex_m/Makefile

@@ -4,7 +4,7 @@ ccflags-y +=-I$(srctree)/arch/$(ARCH)/platforms/$(SOC_NAME)
 asflags-y = $(ccflags-y)
 
 obj-y = vector_table.o reset.o \
-	prep_c.o scs.o scb.o nmi.o \
+	nmi_on_reset.o prep_c.o scs.o scb.o nmi.o \
 	exc_manage.o exc_wrapper.o
 
 obj-$(CONFIG_ERRNO) += errno.o

arch/arm/soc/atmel_sam3/Kbuild

@@ -1 +1 @@
-obj-y += soc.o nmi_on_reset.o
+obj-y += soc.o

arch/arm/soc/atmel_sam3/soc.c

@@ -28,12 +28,7 @@
 #include <init.h>
 #include <soc.h>
 
-#ifdef CONFIG_RUNTIME_NMI
+#include <arch/cpu.h>
-extern void _NmiInit(void);
-#define NMI_INIT() _NmiInit()
-#else
-#define NMI_INIT()
-#endif
 
 /**
  * @brief Setup various clock on SoC.

arch/arm/soc/fsl_frdm_k64f/Kbuild

@@ -1,4 +1,3 @@
 obj-y += soc_config.o
 obj-y += soc.o
-obj-y += nmi_on_reset.o
 obj-y += wdog.o

arch/arm/soc/fsl_frdm_k64f/soc.c

@@ -34,6 +34,8 @@
 #include <drivers/k6x_pmc.h>
 #include <sections.h>
 
+#include <arch/cpu.h>
+
 
 /* board's setting for PLL multipler (PRDIV0) */
 #define FRDM_K64F_PLL_DIV_20 (20 - 1)
@@ -41,13 +43,6 @@
 /* board's setting for PLL multipler (VDIV0) */
 #define FRDM_K64F_PLL_MULT_48 (48 - 24)
 
-#ifdef CONFIG_RUNTIME_NMI
-extern void _NmiInit(void);
-#define NMI_INIT() _NmiInit()
-#else
-#define NMI_INIT()
-#endif
-
 /*
  * K64F Flash configuration fields
  * These 16 bytes, which must be loaded to address 0x400, include default

arch/arm/soc/ti_lm3s6965/Kbuild

@@ -1,4 +1,3 @@
 obj-y += soc_config.o
 obj-y += soc.o
-obj-y += nmi_on_reset.o
 obj-y += scp.o

arch/arm/soc/ti_lm3s6965/nmi_on_reset.S

@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 2013-2014 Wind River Systems, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * @file
- * @brief Default basic NMI handler before the kernel is up
- *
- * Provide a default handler for NMI before the system is up. The default action
- * is to hard hang, sleeping.
- *
- * This might be preferable than rebooting to help debugging, or because
- * rebooting might trigger the exact same problem over and over.
- */
-
-#define _ASMLANGUAGE
-
-#include <toolchain.h>
-#include <sections.h>
-
-_ASM_FILE_PROLOGUE
-
-GTEXT(_SysNmiOnReset)
-
-SECTION_FUNC(TEXT, _SysNmiOnReset)
-    wfi
-    b _SysNmiOnReset

arch/arm/soc/ti_lm3s6965/soc.c

@@ -27,12 +27,7 @@
 #include <init.h>
 #include <soc.h>
 
-#ifdef CONFIG_RUNTIME_NMI
+#include <arch/cpu.h>
-extern void _NmiInit(void);
-#define NMI_INIT() _NmiInit()
-#else
-#define NMI_INIT()
-#endif
 
 /**
  *

include/arch/arm/arch.h

@@ -51,6 +51,7 @@ extern "C" {
 #include <arch/arm/cortex_m/asm_inline.h>
 #include <arch/arm/cortex_m/addr_types.h>
 #include <arch/arm/cortex_m/sys_io.h>
+#include <arch/arm/cortex_m/nmi.h>
 #endif
 
 #define STACK_ALIGN  4

include/arch/arm/cortex_m/nmi.h

@@ -1,5 +1,11 @@
+/**
+ * @file
+ *
+ * @brief NMI routines for ARM Cortex M series
+ */
+
 /*
- * Copyright (c) 2013-2014 Wind River Systems, Inc.
+ * Copyright (c) 2015 Intel Corporation
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,26 +20,14 @@
  * limitations under the License.
  */
 
-/**
+#ifndef __CORTEX_M_NMI_H
- * @file
+#define __CORTEX_M_NMI_H
- * @brief Default basic NMI handler before the kernel is up
- *
- * Provide a default handler for NMI before the system is up. The default action
- * is to hard hang, sleeping.
- *
- * This might be preferable than rebooting to help debugging, or because
- * rebooting might trigger the exact same problem over and over.
- */
 
-#define _ASMLANGUAGE
+#ifdef CONFIG_RUNTIME_NMI
+extern void _NmiInit(void);
+#define NMI_INIT() _NmiInit()
+#else
+#define NMI_INIT()
+#endif
 
-#include <toolchain.h>
+#endif /* __CORTEX_M_NMI_H */
-#include <sections.h>
-
-_ASM_FILE_PROLOGUE
-
-GTEXT(_SysNmiOnReset)
-
-SECTION_FUNC(TEXT, _SysNmiOnReset)
-    wfi
-    b _SysNmiOnReset