mpc5xxx: Support CPU internal watchdog.
Signed-off-by: Detlev Zundel <dzu@denx.de>
diff --git a/cpu/mpc5xxx/cpu.c b/cpu/mpc5xxx/cpu.c
index 2a28df4..edfb828 100644
--- a/cpu/mpc5xxx/cpu.c
+++ b/cpu/mpc5xxx/cpu.c
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2000-2003
+ * (C) Copyright 2000-2010
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
@@ -192,3 +192,21 @@
return mpc5xxx_fec_initialize(bis);
}
#endif
+
+#if defined(CONFIG_WATCHDOG)
+void watchdog_reset(void)
+{
+ int re_enable = disable_interrupts();
+ reset_5xxx_watchdog();
+ if (re_enable) enable_interrupts();
+}
+
+void reset_5xxx_watchdog(void)
+{
+ volatile struct mpc5xxx_gpt *gpt0 =
+ (struct mpc5xxx_gpt *) MPC5XXX_GPT;
+
+ /* Trigger TIMER_0 by writing A5 to OCPW */
+ clrsetbits_be32(&gpt0->emsr, 0xff000000, 0xa5000000);
+}
+#endif /* CONFIG_WATCHDOG */