mirror of
https://github.com/torvalds/linux.git
synced 2024-11-20 02:51:44 +00:00
14e067c1a5
Add restart hook so that DTS based AM33xx builds can restart the platform. Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jean-Sebastien A. Beaudry <jsabeaudry@handyem.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
35 lines
1015 B
C
35 lines
1015 B
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 "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(char mode, const char *cmd)
|
|
{
|
|
/* TODO: Handle mode and cmd if necessary */
|
|
|
|
am33xx_prm_rmw_reg_bits(AM33XX_GLOBAL_WARM_SW_RST_MASK,
|
|
AM33XX_GLOBAL_WARM_SW_RST_MASK,
|
|
AM33XX_PRM_DEVICE_MOD,
|
|
AM33XX_PRM_RSTCTRL_OFFSET);
|
|
|
|
/* OCP barrier */
|
|
(void)am33xx_prm_read_reg(AM33XX_PRM_DEVICE_MOD,
|
|
AM33XX_PRM_RSTCTRL_OFFSET);
|
|
}
|