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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