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// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com>
* Copyright (C) 2012 John Crispin <john@phrozen.org>
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/pm.h>
#include <asm/reboot.h>
#include <linux/export.h>
#include <lantiq_soc.h>
/*
* Dummy implementation. Used to allow platform code to find out what
* source was booted from
*/
unsigned char ltq_boot_select(void)
{
return BS_SPI;
}
#define BOOT_REG_BASE (KSEG1 | 0x1F200000)
#define BOOT_PW1_REG (BOOT_REG_BASE | 0x20)
#define BOOT_PW2_REG (BOOT_REG_BASE | 0x24)
#define BOOT_PW1 0x4C545100
#define BOOT_PW2 0x0051544C
#define WDT_REG_BASE (KSEG1 | 0x1F8803F0)
#define WDT_PW1 0x00BE0000
#define WDT_PW2 0x00DC0000
static void machine_restart(char *command)
{
local_irq_disable();
/* reboot magic */
ltq_w32(BOOT_PW1, (void *)BOOT_PW1_REG); /* 'LTQ\0' */
ltq_w32(BOOT_PW2, (void *)BOOT_PW2_REG); /* '\0QTL' */
ltq_w32(0, (void *)BOOT_REG_BASE); /* reset Bootreg RVEC */
/* watchdog magic */
ltq_w32(WDT_PW1, (void *)WDT_REG_BASE);
ltq_w32(WDT_PW2 |
(0x3 << 26) | /* PWL */
(0x2 << 24) | /* CLKDIV */
(0x1 << 31) | /* enable */
(1), /* reload */
(void *)WDT_REG_BASE);
unreachable();
}
static void machine_halt(void)
{
local_irq_disable();
unreachable();
}
static void machine_power_off(void)
{
local_irq_disable();
unreachable();
}
static int __init mips_reboot_setup(void)
{
_machine_restart = machine_restart;
_machine_halt = machine_halt;
pm_power_off = machine_power_off;
return 0;
}
arch_initcall(mips_reboot_setup);
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