diff options
Diffstat (limited to 'arch/arm/cpu/arm1136')
| -rw-r--r-- | arch/arm/cpu/arm1136/mx31/timer.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/arch/arm/cpu/arm1136/mx31/timer.c b/arch/arm/cpu/arm1136/mx31/timer.c index f6be3b94a4..27c340fd9e 100644 --- a/arch/arm/cpu/arm1136/mx31/timer.c +++ b/arch/arm/cpu/arm1136/mx31/timer.c @@ -24,6 +24,8 @@ #include <common.h> #include <asm/arch/mx31-regs.h> #include <div64.h> +#include <watchdog.h> +#include <asm/io.h> #define TIMER_BASE 0x53f90000 /* General purpose timer 1 */ @@ -165,5 +167,39 @@ void __udelay (unsigned long usec) void reset_cpu (ulong addr) { - __REG16(WDOG_BASE) = 4; + struct wdog_regs *wdog = (struct wdog_regs *)WDOG_BASE; + wdog->wcr = WDOG_ENABLE; + while (1) + ; } + +#ifdef CONFIG_HW_WATCHDOG +void mxc_hw_watchdog_enable(void) +{ + struct wdog_regs *wdog = (struct wdog_regs *)WDOG_BASE; + u16 secs; + + /* + * The timer watchdog can be set between + * 0.5 and 128 Seconds. If not defined + * in configuration file, sets 64 Seconds + */ +#ifdef CONFIG_SYS_WD_TIMER_SECS + secs = (CONFIG_SYS_WD_TIMER_SECS << 1) & 0xFF; + if (!secs) secs = 1; +#else + secs = 64; +#endif + writew(readw(&wdog->wcr) | (secs << WDOG_WT_SHIFT) | WDOG_ENABLE, + &wdog->wcr); +} + + +void mxc_hw_watchdog_reset(void) +{ + struct wdog_regs *wdog = (struct wdog_regs *)WDOG_BASE; + + writew(0x5555, &wdog->wsr); + writew(0xAAAA, &wdog->wsr); +} +#endif |