[linux-2.6-block.git] / arch / arm / mach-omap2 / am33xx-restart.c

/*
 * am33xx-restart.c - Code common to all AM33xx machines.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/kernel.h>
#include <linux/reboot.h>

#include "common.h"
#include "prm-regbits-33xx.h"
#include "prm33xx.h"

/**
 * am3xx_restart - trigger a software restart of the SoC
 * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
 * @cmd: passed from the userspace program rebooting the system (if provided)
 *
 * Resets the SoC.  For @cmd, see the 'reboot' syscall in
 * kernel/sys.c.  No return value.
 */
void am33xx_restart(enum reboot_mode mode, const char *cmd)
{
	/* TODO: Handle mode and cmd if necessary */

	am33xx_prm_rmw_reg_bits(AM33XX_RST_GLOBAL_WARM_SW_MASK,
				AM33XX_RST_GLOBAL_WARM_SW_MASK,
				AM33XX_PRM_DEVICE_MOD,
				AM33XX_PRM_RSTCTRL_OFFSET);

	/* OCP barrier */
	(void)am33xx_prm_read_reg(AM33XX_PRM_DEVICE_MOD,
				  AM33XX_PRM_RSTCTRL_OFFSET);
}
Commit	Line	Data
14e067c1 JSB	1	/*
	2	* am33xx-restart.c - Code common to all AM33xx machines.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8	#include <linux/kernel.h>
7b6d864b	9	#include <linux/reboot.h>
14e067c1 JSB	10
	11	#include "common.h"
	12	#include "prm-regbits-33xx.h"
	13	#include "prm33xx.h"
	14
	15	/**
	16	* am3xx_restart - trigger a software restart of the SoC
	17	* @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
	18	* @cmd: passed from the userspace program rebooting the system (if provided)
	19	*
	20	* Resets the SoC. For @cmd, see the 'reboot' syscall in
	21	* kernel/sys.c. No return value.
	22	*/
7b6d864b	23	void am33xx_restart(enum reboot_mode mode, const char *cmd)
14e067c1 JSB	24	{
	25	/* TODO: Handle mode and cmd if necessary */
	26
56cab606 MU	27	am33xx_prm_rmw_reg_bits(AM33XX_RST_GLOBAL_WARM_SW_MASK,
56cab606 MU	28	AM33XX_RST_GLOBAL_WARM_SW_MASK,
14e067c1 JSB	29	AM33XX_PRM_DEVICE_MOD,
	30	AM33XX_PRM_RSTCTRL_OFFSET);
	31
	32	/* OCP barrier */
	33	(void)am33xx_prm_read_reg(AM33XX_PRM_DEVICE_MOD,
	34	AM33XX_PRM_RSTCTRL_OFFSET);
	35	}