This add support cpu reset by trigger_address_error function.
Signed-off-by: Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com --- arch/sh/cpu/sh2/watchdog.c | 8 ++++++-- arch/sh/cpu/sh3/watchdog.c | 7 +++++++ arch/sh/cpu/sh4/watchdog.c | 4 ++++ arch/sh/include/asm/system.h | 10 ++++++++++ 4 files changed, 27 insertions(+), 2 deletions(-)
diff --git a/arch/sh/cpu/sh2/watchdog.c b/arch/sh/cpu/sh2/watchdog.c index de0254b..0257d8d 100644 --- a/arch/sh/cpu/sh2/watchdog.c +++ b/arch/sh/cpu/sh2/watchdog.c @@ -1,6 +1,6 @@ /* - * Copyright (C) 2008 Nobuhiro Iwamatsu iwamatsu.nobuhoro@renesas.com - * Copyright (C) 2008 Renesas Solutions Corp. + * Copyright (C) 2008,2010 Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com + * Copyright (C) 2008,2010 Renesas Solutions Corp. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as @@ -20,6 +20,7 @@
#include <common.h> #include <asm/processor.h> +#include <asm/system.h>
int watchdog_init(void) { @@ -28,6 +29,9 @@ int watchdog_init(void)
void reset_cpu(unsigned long ignored) { + /* Address error with SR.BL=1 first. */ + trigger_address_error(); + while (1) ; } diff --git a/arch/sh/cpu/sh3/watchdog.c b/arch/sh/cpu/sh3/watchdog.c index 92bea74..90694f8 100644 --- a/arch/sh/cpu/sh3/watchdog.c +++ b/arch/sh/cpu/sh3/watchdog.c @@ -1,4 +1,7 @@ /* + * (C) Copyright 2010 + * Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com + * * (C) Copyright 2007 * Yoshihiro Shimoda shimoda.yoshihiro@renesas.com * @@ -20,6 +23,7 @@
#include <common.h> #include <asm/processor.h> +#include <asm/system.h>
int watchdog_init(void) { @@ -28,6 +32,9 @@ int watchdog_init(void)
void reset_cpu(unsigned long ignored) { + /* Address error with SR.BL=1 first. */ + trigger_address_error(); + while (1) ; } diff --git a/arch/sh/cpu/sh4/watchdog.c b/arch/sh/cpu/sh4/watchdog.c index f692429..d7e1703 100644 --- a/arch/sh/cpu/sh4/watchdog.c +++ b/arch/sh/cpu/sh4/watchdog.c @@ -17,6 +17,7 @@
#include <common.h> #include <asm/processor.h> +#include <asm/system.h> #include <asm/io.h>
#define WDT_BASE WTCNT @@ -66,6 +67,9 @@ int watchdog_disable(void)
void reset_cpu(unsigned long ignored) { + /* Address error with SR.BL=1 first. */ + trigger_address_error(); + while (1) ; } diff --git a/arch/sh/include/asm/system.h b/arch/sh/include/asm/system.h index 90a53a0..56fd77a 100644 --- a/arch/sh/include/asm/system.h +++ b/arch/sh/include/asm/system.h @@ -272,4 +272,14 @@ void enable_hlt(void);
#define arch_align_stack(x) (x)
+static inline void trigger_address_error(void) +{ + __asm__ __volatile__ ( + "ldc %0, sr\n\t" + "mov.l @%1, %0" + : + : "r" (0x10000000), "r" (0x80000001) + ); +} + #endif