1 /* 2 * arch/arm/plat-spear/restart.c 3 * 4 * SPEAr platform specific restart functions 5 * 6 * Copyright (C) 2009 ST Microelectronics 7 * Viresh Kumar <vireshk@kernel.org> 8 * 9 * This file is licensed under the terms of the GNU General Public 10 * License version 2. This program is licensed "as is" without any 11 * warranty of any kind, whether express or implied. 12 */ 13 #include <linux/io.h> 14 #include <linux/amba/sp810.h> 15 #include <linux/reboot.h> 16 #include <asm/system_misc.h> 17 #include <mach/spear.h> 18 #include "generic.h" 19 20 #define SPEAR13XX_SYS_SW_RES (VA_MISC_BASE + 0x204) 21 void spear_restart(enum reboot_mode mode, const char *cmd) 22 { 23 if (mode == REBOOT_SOFT) { 24 /* software reset, Jump into ROM at address 0 */ 25 soft_restart(0); 26 } else { 27 /* hardware reset, Use on-chip reset capability */ 28 #ifdef CONFIG_ARCH_SPEAR13XX 29 writel_relaxed(0x01, SPEAR13XX_SYS_SW_RES); 30 #endif 31 #if defined(CONFIG_ARCH_SPEAR3XX) || defined(CONFIG_ARCH_SPEAR6XX) 32 sysctl_soft_reset((void __iomem *)VA_SPEAR_SYS_CTRL_BASE); 33 #endif 34 } 35 } 36