50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/*
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* linux/arch/mips/jz4740/reset.c
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*
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* JZ4740 reset routines.
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*
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* Copyright (c) 2006-2007 Ingenic Semiconductor Inc.
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* Author: <yliu@ingenic.cn>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <asm/io.h>
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#include <asm/pgtable.h>
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#include <asm/processor.h>
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#include <asm/reboot.h>
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#include <asm/system.h>
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#include <asm/mach-jz4740/regs.h>
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#include <asm/mach-jz4740/timer.h>
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#include <asm/mach-jz4740/jz4740.h>
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void jz_restart(char *command)
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{
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printk(KERN_NOTICE "Restarting after 4 ms\n");
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REG_WDT_TCSR = WDT_TCSR_PRESCALE4 | WDT_TCSR_EXT_EN;
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REG_WDT_TCNT = 0;
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REG_WDT_TDR = JZ_EXTAL/1000; /* reset after 4ms */
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jz4740_timer_enable_watchdog();
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REG_WDT_TCER = WDT_TCER_TCEN; /* wdt start */
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while (1);
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}
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void jz_halt(void)
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{
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/* Put CPU to power down mode */
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while (!(REG_RTC_RCR & RTC_RCR_WRDY));
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REG_RTC_HCR = RTC_HCR_PD;
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while (1)
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__asm__(".set\tmips3\n\t"
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"wait\n\t"
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".set\tmips0");
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}
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void jz_power_off(void)
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{
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jz_halt();
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}
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