| 1 | // SPDX-License-Identifier: GPL-2.0-only |
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| 2 | #include <linux/kernel.h> |
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| 3 | #include <linux/init.h> |
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| 4 | #include <linux/reboot.h> |
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| 5 | |
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| 6 | #include "iomap.h" |
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| 7 | #include "common.h" |
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| 8 | #include "control.h" |
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| 9 | #include "prm3xxx.h" |
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| 10 | |
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| 11 | #define TI81XX_PRM_DEVICE_RSTCTRL 0x00a0 |
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| 12 | #define TI81XX_GLOBAL_RST_COLD BIT(1) |
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| 13 | |
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| 14 | /** |
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| 15 | * ti81xx_restart - trigger a software restart of the SoC |
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| 16 | * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c |
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| 17 | * @cmd: passed from the userspace program rebooting the system (if provided) |
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| 18 | * |
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| 19 | * Resets the SoC. For @cmd, see the 'reboot' syscall in |
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| 20 | * kernel/sys.c. No return value. |
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| 21 | * |
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| 22 | * NOTE: Warm reset does not seem to work, may require resetting |
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| 23 | * clocks to bypass mode. |
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| 24 | */ |
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| 25 | void ti81xx_restart(enum reboot_mode mode, const char *cmd) |
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| 26 | { |
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| 27 | omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, module: 0, |
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| 28 | TI81XX_PRM_DEVICE_RSTCTRL); |
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| 29 | while (1) |
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| 30 | ; |
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| 31 | } |
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| 32 | |
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