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)
spear_restart(enum reboot_mode mode,const char * cmd)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