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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, |
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 | } |