From 8b6ff599fde043c89cf8e5163635e2bc6dce6787 Mon Sep 17 00:00:00 2001
From: Richard Retanubun <richardretanu...@ruggedcom.com>
Date: Fri, 20 Mar 2009 15:30:10 -0400
Subject: [PATCH] Adds WATCHDOG_RESET() function call to lib_m68k
dtimer_interrupt.
Ported from lib_ppc/interrupts.c, this adds the ability for
the coldfire system timer to auto-reset the watchdog when
dtimer_interrupts is called.
Signed-off-by: Richard Retanubun <richardretanu...@ruggedcom.com>
---
Hi TC & John
This is the solution to the 2nd problem I found for my previous e-mail:
Coldfire: MCF5271: Periodic HW watchdog petting and sleep function does not work
This fixes the HW watchdog periodic auto-reset. The sleep function's cause I
answered in the original thread, still hoping to get recommended values for
CONFIG_SYS_TMRINTR_PRI, 0x09 seems to work ok.
- Richard
lib_m68k/time.c | 13 ++++++++++++-
1 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/lib_m68k/time.c b/lib_m68k/time.c
index 697d67e..29269f6 100644
--- a/lib_m68k/time.c
+++ b/lib_m68k/time.c
@@ -27,10 +27,15 @@
#include <asm/timer.h>
#include <asm/immap.h>
+#include <watchdog.h>
DECLARE_GLOBAL_DATA_PTR;
-static ulong timestamp;
+static volatile ulong timestamp = 0;
+
+#ifndef CONFIG_SYS_WATCHDOG_FREQ
+#define CONFIG_SYS_WATCHDOG_FREQ (CONFIG_SYS_HZ / 2)
+#endif
#if defined(CONFIG_MCFTMR)
#ifndef CONFIG_SYS_UDELAY_BASE
@@ -76,6 +81,12 @@ void dtimer_interrupt(void *not_used)
if ((CONFIG_SYS_TMRPND_REG & CONFIG_SYS_TMRINTR_MASK) ==
CONFIG_SYS_TMRINTR_PEND) {
timerp->ter = (DTIM_DTER_CAP | DTIM_DTER_REF);
timestamp++;
+
+ #if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
+ if ((timestamp % (CONFIG_SYS_WATCHDOG_FREQ)) == 0) {
+ WATCHDOG_RESET ();
+ }
+ #endif /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */
return;
}
}
--
1.5.6.5
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