1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * arch/arm/plat-spear/restart.c 4 * 5 * SPEAr platform specific restart functions 6 * 7 * Copyright (C) 2009 ST Microelectronics 8 * Viresh Kumar <vireshk@kernel.org> 9 */ 10 #include <linux/io.h> 11 #include <linux/amba/sp810.h> 12 #include <linux/reboot.h> 13 #include <asm/system_misc.h> 14 #include "spear.h" 15 #include "generic.h" 16 17 #define SPEAR13XX_SYS_SW_RES (VA_MISC_BASE + 0x204) 18 void spear_restart(enum reboot_mode mode, const char *cmd) 19 { 20 if (mode == REBOOT_SOFT) { 21 /* software reset, Jump into ROM at address 0 */ 22 soft_restart(0); 23 } else { 24 /* hardware reset, Use on-chip reset capability */ 25 #ifdef CONFIG_ARCH_SPEAR13XX 26 writel_relaxed(0x01, SPEAR13XX_SYS_SW_RES); 27 #endif 28 #if defined(CONFIG_ARCH_SPEAR3XX) || defined(CONFIG_ARCH_SPEAR6XX) 29 sysctl_soft_reset((void __iomem *)VA_SPEAR_SYS_CTRL_BASE); 30 #endif 31 } 32 } 33