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| author | wdenk <wdenk> | 2005-04-05 22:30:50 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2005-04-05 22:30:50 +0000 |
| commit | b304c96871c92d1ec8fa57dda36cc198660fd10e (patch) | |
| tree | b45ea6bbac8eee483d99eccbddda21af57f8e8be /cpu/arm920t/s3c24x0 | |
| parent | 12b43d515c62682fcf7b578f31920a2be49142fe (diff) | |
| download | u-boot-imx-b304c96871c92d1ec8fa57dda36cc198660fd10e.zip u-boot-imx-b304c96871c92d1ec8fa57dda36cc198660fd10e.tar.gz u-boot-imx-b304c96871c92d1ec8fa57dda36cc198660fd10e.tar.bz2 | |
Patches by Steven Scholz, 05 Apr 2005:
- Use i.MX watchdog timer for reset_cpu()
- Move reset_cpu() out of cpu/arm920t/start.S into the SoC specific
subdirectories cpu/arm920t/imx/ and cpu/arm920t/s3c24x0/
(now in interupts.c)
Diffstat (limited to 'cpu/arm920t/s3c24x0')
| -rw-r--r-- | cpu/arm920t/s3c24x0/interrupts.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/cpu/arm920t/s3c24x0/interrupts.c b/cpu/arm920t/s3c24x0/interrupts.c index 868621f..ba835f3 100644 --- a/cpu/arm920t/s3c24x0/interrupts.c +++ b/cpu/arm920t/s3c24x0/interrupts.c @@ -185,4 +185,31 @@ ulong get_tbclk (void) return tbclk; } +/* + * reset the cpu by setting up the watchdog timer and let him time out + */ +void reset_cpu (ulong ignored) +{ + S3C24X0_WATCHDOG * const watchdog; + +#ifdef CONFIG_TRAB + disable_vfd(); +#endif + + watchdog = S3C24X0_GetBase_WATCHDOG(); + + /* Disable watchdog */ + watchdog->WTCON = 0x0000; + + /* Initialize watchdog timer count register */ + watchdog->WTCNT = 0x0001; + + /* Enable watchdog timer; assert reset at timer timeout */ + watchdog->WTCON = 0x0021; + + while(1); /* loop forever and wait for reset to happen */ + + /*NOTREACHED*/ +} + #endif /* defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB) */ |