diff options
author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-12-17 16:53:07 +0100 |
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committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-12-17 16:53:07 +0100 |
commit | cb5473205206c7f14cbb1e747f28ec75b48826e2 (patch) | |
tree | 8f4808d60917100b18a10b05230f7638a0a9bbcc /cpu/sh4/watchdog.c | |
parent | baf449fc5ff96f071bb0e3789fd3265f6d4fd9a0 (diff) | |
parent | 92c78a3bbcb2ce508b4bf1c4a1e0940406a024bb (diff) |
Merge branch 'fixes' into cleanups
Conflicts:
board/atmel/atngw100/atngw100.c
board/atmel/atstk1000/atstk1000.c
cpu/at32ap/at32ap700x/gpio.c
include/asm-avr32/arch-at32ap700x/clk.h
include/configs/atngw100.h
include/configs/atstk1002.h
include/configs/atstk1003.h
include/configs/atstk1004.h
include/configs/atstk1006.h
include/configs/favr-32-ezkit.h
include/configs/hammerhead.h
include/configs/mimc200.h
Diffstat (limited to 'cpu/sh4/watchdog.c')
-rw-r--r-- | cpu/sh4/watchdog.c | 53 |
1 files changed, 37 insertions, 16 deletions
diff --git a/cpu/sh4/watchdog.c b/cpu/sh4/watchdog.c index 346e217..f692429 100644 --- a/cpu/sh4/watchdog.c +++ b/cpu/sh4/watchdog.c @@ -17,34 +17,55 @@ #include <common.h> #include <asm/processor.h> +#include <asm/io.h> #define WDT_BASE WTCNT -static unsigned char cnt_read (void){ - return *((volatile unsigned char *)(WDT_BASE + 0x00)); +#define WDT_WD (1 << 6) +#define WDT_RST_P (0) +#define WDT_RST_M (1 << 5) +#define WDT_ENABLE (1 << 7) + +#if defined(CONFIG_WATCHDOG) +static unsigned char csr_read(void) +{ + return inb(WDT_BASE + 0x04); } -static unsigned char csr_read (void){ - return *((volatile unsigned char *)(WDT_BASE + 0x04)); +static void cnt_write(unsigned char value) +{ + outl((unsigned short)value | 0x5A00, WDT_BASE + 0x00); } -static void cnt_write (unsigned char value){ - while (csr_read() & (1 << 5)) { - /* delay */ - } - *((volatile unsigned short *)(WDT_BASE + 0x00)) - = ((unsigned short) value) | 0x5A00; +static void csr_write(unsigned char value) +{ + outl((unsigned short)value | 0xA500, WDT_BASE + 0x04); } -static void csr_write (unsigned char value){ - *((volatile unsigned short *)(WDT_BASE + 0x04)) - = ((unsigned short) value) | 0xA500; +void watchdog_reset(void) +{ + outl(0x55000000, WDT_BASE + 0x08); } +int watchdog_init(void) +{ + /* Set overflow time*/ + cnt_write(0); + /* Power on reset */ + csr_write(WDT_WD|WDT_RST_P|WDT_ENABLE); + + return 0; +} -int watchdog_init (void){ return 0; } +int watchdog_disable(void) +{ + csr_write(csr_read() & ~WDT_ENABLE); + return 0; +} +#endif -void reset_cpu (unsigned long ignored) +void reset_cpu(unsigned long ignored) { - while(1); + while (1) + ; } |