u-boot/arch/sh/cpu/sh4/watchdog.c
Simon Glass 9a3b4ceb37 common: Move reset_cpu() to the CPU header
Move this function out of common.h and into a relevant header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-01-17 14:02:31 -05:00

61 lines
1,010 B
C

// SPDX-License-Identifier: GPL-2.0+
#include <common.h>
#include <cpu_func.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/io.h>
#define WDT_BASE WTCNT
#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 void cnt_write(unsigned char value)
{
outl((unsigned short)value | 0x5A00, WDT_BASE + 0x00);
}
static void csr_write(unsigned char value)
{
outl((unsigned short)value | 0xA500, WDT_BASE + 0x04);
}
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_disable(void)
{
csr_write(csr_read() & ~WDT_ENABLE);
return 0;
}
#endif
void reset_cpu(unsigned long ignored)
{
/* Address error with SR.BL=1 first. */
trigger_address_error();
while (1)
;
}