1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License version 2 as 4 * published by the Free Software Foundation. 5 */ 6 #include <linux/kernel.h> 7 #include <linux/init.h> 8 #include <linux/reboot.h> 9 10 #include "iomap.h" 11 #include "common.h" 12 #include "control.h" 13 #include "prm3xxx.h" 14 15 #define TI81XX_PRM_DEVICE_RSTCTRL 0x00a0 16 #define TI81XX_GLOBAL_RST_COLD BIT(1) 17 18 /** 19 * ti81xx_restart - trigger a software restart of the SoC 20 * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c 21 * @cmd: passed from the userspace program rebooting the system (if provided) 22 * 23 * Resets the SoC. For @cmd, see the 'reboot' syscall in 24 * kernel/sys.c. No return value. 25 * 26 * NOTE: Warm reset does not seem to work, may require resetting 27 * clocks to bypass mode. 28 */ 29 void ti81xx_restart(enum reboot_mode mode, const char *cmd) 30 { 31 omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0, 32 TI81XX_PRM_DEVICE_RSTCTRL); 33 while (1); 34 } 35