boot/common/src/uboot/drivers/wdt/wdt.c

/*******************************************************************************
 * Copyright (C) 2016, ZXIC Corporation.
 *
 * File Name:
 * File Mark:
 * Description:
 * Others:
 * Version:       1.0
 * Author:        zxic
 * Date:		  2016.12.15
 * modify
  ********************************************************************************/

/****************************************************************************
* 	                                           Include files
****************************************************************************/
#include <malloc.h> 
#include <errno.h>
#include <asm/io.h> 
#include <linux/mtd/mtd.h>
#include <asm-generic/ioctl.h>
#include <config.h>
#include <common.h>
#include <command.h>
#include <boot_mode.h>
#include <watchdog.h>
#include <asm/arch/lsp_crpm.h>


/****************************************************************************
* 	                                           Local Macros
****************************************************************************/
/*used in wdt*/
#define WDT_DIABLE		(0x44495341) /*ascii: DISA*/
#define WDT_OFF 		(0x57445446) //ascii:WDTF


/*open and close wdt function for long time operation in boot.*/
#define RM_WDT_BASE	(0x00148000)
#define RM_WDT_START_REG  (0x0014801C)  /* Watchdog start or stop register */

#define WDT_RESET_TYPE			(TOP_SYSCLK_BASE+0x2c)
#define RM_MOD_RST					(TOP_SYSCLK_BASE+0x74)

#define reg32(addr)			(*(volatile unsigned long *)(addr))


/****************************************************************************
* 	                                           Local Types
****************************************************************************/


/****************************************************************************
* 	                                           Global Value
****************************************************************************/


/****************************************************************************
* 	                                           Local Funcs
****************************************************************************/

int wdt_open(void)
{
	reg32(RM_WDT_START_REG) = 0x12340001;//open
	return 0;
}

int wdt_close(void)
{
	reg32(RM_WDT_START_REG) = 0x12340000;//close
	return 0;
}
void wdt_restart(void)
{
	volatile u32 tmp = 0;

	//reset
	reg32(WDT_RESET_TYPE) |= (0x3); 
	//reg32(RM_MOD_RST) &=~(0x3<<12);
	//reg32(RM_MOD_RST) |=(0x3<<12);
	
	//clk sel default, clk div
	tmp =reg32(RM_WDT_BASE + 0x04);
	tmp &=~(0xff<<8);
	tmp |=(31<<8);
	reg32(RM_WDT_BASE + 0x04) = 0x12340000|tmp;
	
	/*set value int */
	reg32(RM_WDT_BASE + 0x14) = 0x12340000|0x8;

	/*set load value*/
	reg32(RM_WDT_BASE + 0x08) = 0x12340000|0x10;
	
	/*refresh config*/		
	tmp =reg32(RM_WDT_BASE + 0x18);
	tmp ^=0x3f;
	reg32(RM_WDT_BASE + 0x18) = 0x12340000|tmp;
	
   	/*wait for refresh ack*/
	while(1)
	{
		if(((reg32(RM_WDT_BASE + 0x10)>>4)&0x3f) == tmp)
			break;
	}

	/*start  wdt*/
	do{
		reg32(RM_WDT_START_REG) =0x12340001;
	}while(1);
}

int wdt_get_reboot_reason(void)
{
	if(reg32(WDT_REBOOT_RECORD_BASE) == 1)
		printf( "[sys_entry_wdt]: PS watchdog reset! global_cnt = %d; core_cnt = %d\n", (int)reg32(WDT_REBOOT_RECORD_BASE+0x8), (int)reg32(WDT_REBOOT_RECORD_BASE+0xc));
	else if(reg32(WDT_REBOOT_RECORD_BASE) == 2)
		printf( "[sys_entry_wdt]: AP watchdog reset! global_cnt = %d; core_cnt = %d\n", (int)reg32(WDT_REBOOT_RECORD_BASE+0x8), (int)reg32(WDT_REBOOT_RECORD_BASE+0xc));
	else if(reg32(WDT_REBOOT_RECORD_BASE) == 3)
		printf( "[sys_entry_wdt]: PHY watchdog reset! global_cnt = %d; core_cnt = %d\n", (int)reg32(WDT_REBOOT_RECORD_BASE+0x8), (int)reg32(WDT_REBOOT_RECORD_BASE+0xc));
	else if(reg32(WDT_REBOOT_RECORD_BASE) == 4)
		printf( "[sys_entry_wdt]: Rpm watchdog reset! global_cnt = %d; core_cnt = %d\n", (int)reg32(WDT_REBOOT_RECORD_BASE+0x8), (int)reg32(WDT_REBOOT_RECORD_BASE+0xc));
	else
		printf( "[sys_entry_wdt]: watchdog no reset!\n");

	return 0;
}

int wdt_init(void)
{
	unsigned int *poweron_type = (unsigned int *)POWERON_TYPE_ADDR;	 //ÁÙʱʹÓÃ

	/*ap wdt disbale*/
	/*¸ù¾ÝÆô¶¯ÀàÐÍ£¬¹Ø±Õ²»¼ÓÔغ˵Äwatchdog*/
	#ifndef CONFIG_ZX297520V3E_WATCH_CAP	
	reg32(WDT_AP_SWITCH_ADDR) = WDT_DIABLE;	// larry
	#endif
	//reg32(WDT_NV_ADDR) = WDT_OFF;
	
	if(*poweron_type == POWER_ON_FOTA)
	{
		/*turn off PS PHY AP watchdog monitor and close m0 wdt*/
		reg32(WDT_NV_ADDR) = WDT_OFF;
		reg32(WDT_PS_SWITCH_ADDR) = WDT_DIABLE;
		reg32(WDT_PHY_SWITCH_ADDR) = WDT_DIABLE;
		reg32(WDT_AP_SWITCH_ADDR) = WDT_DIABLE;
		printf( "[sys_entry]: turn off PS PHY AP watchdog monitor and close m0 wdt! \n");
	}
	else if(*poweron_type == POWER_ON_CHARGING)
	{
		/*turn off PHY watchdog monitor*/
		reg32(WDT_PHY_SWITCH_ADDR) = WDT_DIABLE;
		printf( "[sys_entry]: turn off PHY watchdog monitor! \n");

	}

	return 0;
}