1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (c) 2015 Purna Chandra Mandal <purna.mandal (at) microchip.com> 4 * 5 */ 6 7 #include <common.h> 8 #include <asm/io.h> 9 #include <mach/pic32.h> 10 11 /* SYSKEY */ 12 #define UNLOCK_KEY1 0xaa996655 13 #define UNLOCK_KEY2 0x556699aa 14 #define LOCK_KEY 0 15 16 #define RSWRST 0x1250 17 18 void _machine_restart(void) 19 { 20 void __iomem *base; 21 22 base = pic32_get_syscfg_base(); 23 24 /* unlock sequence */ 25 writel(LOCK_KEY, base + SYSKEY); 26 writel(UNLOCK_KEY1, base + SYSKEY); 27 writel(UNLOCK_KEY2, base + SYSKEY); 28 29 /* soft reset */ 30 writel(0x1, base + RSWRST); 31 (void) readl(base + RSWRST); 32 33 while (1) 34 ; 35 } 36
