// SPDX-License-Identifier: GPL-2.0+ | |
/* | |
* (c) 2015 Purna Chandra Mandal <purna.mandal@microchip.com> | |
* | |
*/ | |
#include <common.h> | |
#include <asm/io.h> | |
#include <mach/pic32.h> | |
/* SYSKEY */ | |
#define UNLOCK_KEY1 0xaa996655 | |
#define UNLOCK_KEY2 0x556699aa | |
#define LOCK_KEY 0 | |
#define RSWRST 0x1250 | |
void _machine_restart(void) | |
{ | |
void __iomem *base; | |
base = pic32_get_syscfg_base(); | |
/* unlock sequence */ | |
writel(LOCK_KEY, base + SYSKEY); | |
writel(UNLOCK_KEY1, base + SYSKEY); | |
writel(UNLOCK_KEY2, base + SYSKEY); | |
/* soft reset */ | |
writel(0x1, base + RSWRST); | |
(void) readl(base + RSWRST); | |
while (1) | |
; | |
} |