diff options
Diffstat (limited to 'target/linux/xburst/files-2.6.32/arch/mips/jz4740/reset.c')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/arch/mips/jz4740/reset.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/target/linux/xburst/files-2.6.32/arch/mips/jz4740/reset.c b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/reset.c new file mode 100644 index 0000000..a4b2292 --- /dev/null +++ b/target/linux/xburst/files-2.6.32/arch/mips/jz4740/reset.c @@ -0,0 +1,50 @@ +/* + * linux/arch/mips/jz4740/reset.c + * + * JZ4740 reset routines. + * + * Copyright (c) 2006-2007 Ingenic Semiconductor Inc. + * Author: <yliu@ingenic.cn> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/sched.h> +#include <linux/mm.h> +#include <asm/io.h> +#include <asm/pgtable.h> +#include <asm/processor.h> +#include <asm/reboot.h> +#include <asm/system.h> +#include <asm/mach-jz4740/regs.h> +#include <asm/mach-jz4740/timer.h> +#include <asm/mach-jz4740/jz4740.h> + +void jz_restart(char *command) +{ + printk(KERN_NOTICE "Restarting after 4 ms\n"); + REG_WDT_TCSR = WDT_TCSR_PRESCALE4 | WDT_TCSR_EXT_EN; + REG_WDT_TCNT = 0; + REG_WDT_TDR = JZ_EXTAL/1000; /* reset after 4ms */ + jz4740_timer_enable_watchdog(); + REG_WDT_TCER = WDT_TCER_TCEN; /* wdt start */ + while (1); +} + +void jz_halt(void) +{ + /* Put CPU to power down mode */ + while (!(REG_RTC_RCR & RTC_RCR_WRDY)); + REG_RTC_HCR = RTC_HCR_PD; + + while (1) + __asm__(".set\tmips3\n\t" + "wait\n\t" + ".set\tmips0"); +} + +void jz_power_off(void) +{ + jz_halt(); +} |