diff options
| -rw-r--r-- | Makefile | 3 | ||||
| -rw-r--r-- | arch/sh/cpu/sh2/watchdog.c | 8 | ||||
| -rw-r--r-- | arch/sh/cpu/sh3/watchdog.c | 7 | ||||
| -rw-r--r-- | arch/sh/cpu/sh4/watchdog.c | 4 | ||||
| -rw-r--r-- | arch/sh/include/asm/system.h | 12 | ||||
| -rw-r--r-- | arch/sh/lib/time.c | 20 |
6 files changed, 48 insertions, 6 deletions
@@ -40,7 +40,8 @@ HOSTARCH := $(shell uname -m | \ -e s/sa110/arm/ \ -e s/ppc64/powerpc/ \ -e s/ppc/powerpc/ \ - -e s/macppc/powerpc/) + -e s/macppc/powerpc/\ + -e s/sh.*/sh/) HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \ sed -e 's/\(cygwin\).*/cygwin/') diff --git a/arch/sh/cpu/sh2/watchdog.c b/arch/sh/cpu/sh2/watchdog.c index de0254b4464..0257d8d15d8 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 92bea747193..90694f8664b 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 f6924290f00..d7e1703e696 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 a62c42261d7..56fd77acea6 100644 --- a/arch/sh/include/asm/system.h +++ b/arch/sh/include/asm/system.h @@ -8,7 +8,7 @@ * from linux kernel code. */ -#include <linux/irqflags.h> +#include <asm/irqflags.h> #include <asm/types.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 diff --git a/arch/sh/lib/time.c b/arch/sh/lib/time.c index 9a8f89aef60..bc1656f73ce 100644 --- a/arch/sh/lib/time.c +++ b/arch/sh/lib/time.c @@ -2,7 +2,7 @@ * (C) Copyright 2009 * Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> * - * (C) Copyright 2007-2008 + * (C) Copyright 2007-2010 * Nobobuhiro Iwamatsu <iwamatsu@nigauri.org> * * (C) Copyright 2003 @@ -36,6 +36,8 @@ #define TMU_MAX_COUNTER (~0UL) static ulong timer_freq; +static unsigned long last_tcnt; +static unsigned long long overflow_ticks; static inline unsigned long long tick_to_time(unsigned long long tick) { @@ -97,12 +99,26 @@ int timer_init (void) tmu_timer_stop(0); tmu_timer_start(0); + last_tcnt = 0; + overflow_ticks = 0; + return 0; } unsigned long long get_ticks (void) { - return 0 - readl(TCNT0); + unsigned long tcnt = 0 - readl(TCNT0); + unsigned long ticks; + + if (last_tcnt > tcnt) { /* overflow */ + overflow_ticks++; + ticks = (0xffffffff - last_tcnt) + tcnt; + } else { + ticks = tcnt; + } + last_tcnt = tcnt; + + return (overflow_ticks << 32) | tcnt; } void __udelay (unsigned long usec) |