diff options
| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2008-08-19 22:55:15 +0900 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-10-11 16:18:44 +0100 |
| commit | 496a3b5c2c188e8af07261792b3d4e6cf1c1dab9 (patch) | |
| tree | 8b84a2f249c27d6804b3db9068f679d178c8d504 /arch/mips/txx9/generic/setup.c | |
| parent | d75a40e90e9eb08c2159e719a90a7922dab231d3 (diff) | |
| download | lwn-496a3b5c2c188e8af07261792b3d4e6cf1c1dab9.tar.gz lwn-496a3b5c2c188e8af07261792b3d4e6cf1c1dab9.zip | |
MIPS: TXx9: Default machine_restart using watchdog reset
Add default machine_restart routine using watchdog reset of TX4927 and
TX4938.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/txx9/generic/setup.c')
| -rw-r--r-- | arch/mips/txx9/generic/setup.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c index cfa3ccf493bb..118d716f7832 100644 --- 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) { |