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bc7235c9 TL |
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 | } |