MIPS: TXx9: Default machine_restart using watchdog reset

[linux-2.6-omap-h63xx.git] / arch / mips / txx9 / generic / setup.c

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index cfa3ccf493bb1d36a645d582c74d12d93ca5761d..118d716f7832e0bbcd59b88e3e328799b95735be 100644 (file)
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -29,6 +29,7 @@
 #include <asm/r4kcache.h>
 #include <asm/txx9/generic.h>
 #include <asm/txx9/pci.h>
+#include <asm/txx9tmr.h>
 #ifdef CONFIG_CPU_TX49XX
 #include <asm/txx9/tx4938.h>
 #endif
@@ -444,6 +445,20 @@ void __init txx9_wdt_init(unsigned long base)
        platform_device_register_simple("txx9wdt", -1, &res, 1);
 }
 
+void txx9_wdt_now(unsigned long base)
+{
+       struct txx9_tmr_reg __iomem *tmrptr =
+               ioremap(base, sizeof(struct txx9_tmr_reg));
+       /* disable watch dog timer */
+       __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
+       __raw_writel(0, &tmrptr->tcr);
+       /* kick watchdog */
+       __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
+       __raw_writel(1, &tmrptr->cpra); /* immediate */
+       __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
+                    &tmrptr->tcr);
+}
+
 /* SPI support */
 void __init txx9_spi_init(int busid, unsigned long base, int irq)
 {