| Jean-Sebastien A. Beaudry | 14e067c | 2013-01-23 16:02:40 -0500 | [diff] [blame] | 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> |
| 9 | |
| 10 | #include "common.h" |
| 11 | #include "prm-regbits-33xx.h" |
| 12 | #include "prm33xx.h" |
| 13 | |
| 14 | /** |
| 15 | * am3xx_restart - trigger a software restart of the SoC |
| 16 | * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c |
| 17 | * @cmd: passed from the userspace program rebooting the system (if provided) |
| 18 | * |
| 19 | * Resets the SoC. For @cmd, see the 'reboot' syscall in |
| 20 | * kernel/sys.c. No return value. |
| 21 | */ |
| 22 | void am33xx_restart(char mode, const char *cmd) |
| 23 | { |
| 24 | /* TODO: Handle mode and cmd if necessary */ |
| 25 | |
| 26 | am33xx_prm_rmw_reg_bits(AM33XX_GLOBAL_WARM_SW_RST_MASK, |
| 27 | AM33XX_GLOBAL_WARM_SW_RST_MASK, |
| 28 | AM33XX_PRM_DEVICE_MOD, |
| 29 | AM33XX_PRM_RSTCTRL_OFFSET); |
| 30 | |
| 31 | /* OCP barrier */ |
| 32 | (void)am33xx_prm_read_reg(AM33XX_PRM_DEVICE_MOD, |
| 33 | AM33XX_PRM_RSTCTRL_OFFSET); |
| 34 | } |