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73 lines
1.4 KiB
73 lines
1.4 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology |
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* Author: Fuxin Zhang, [email protected] |
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* Copyright (C) 2009 Lemote, Inc. |
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* Author: Zhangjin Wu, [email protected] |
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*/ |
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#include <linux/init.h> |
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#include <linux/pm.h> |
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#include <asm/idle.h> |
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#include <asm/reboot.h> |
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#include <loongson.h> |
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static inline void loongson_reboot(void) |
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{ |
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#ifndef CONFIG_CPU_JUMP_WORKAROUNDS |
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((void (*)(void))ioremap(LOONGSON_BOOT_BASE, 4)) (); |
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#else |
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void (*func)(void); |
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func = (void *)ioremap(LOONGSON_BOOT_BASE, 4); |
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__asm__ __volatile__( |
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" .set noat \n" |
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" jr %[func] \n" |
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" .set at \n" |
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: /* No outputs */ |
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: [func] "r" (func)); |
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#endif |
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} |
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static void loongson_restart(char *command) |
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{ |
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/* do preparation for reboot */ |
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mach_prepare_reboot(); |
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/* reboot via jumping to boot base address */ |
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loongson_reboot(); |
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} |
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static void loongson_poweroff(void) |
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{ |
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mach_prepare_shutdown(); |
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/* |
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* It needs a wait loop here, but mips/kernel/reset.c already calls |
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* a generic delay loop, machine_hang(), so simply return. |
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*/ |
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return; |
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} |
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static void loongson_halt(void) |
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{ |
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pr_notice("\n\n** You can safely turn off the power now **\n\n"); |
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while (1) { |
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if (cpu_wait) |
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cpu_wait(); |
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} |
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} |
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static int __init mips_reboot_setup(void) |
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{ |
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_machine_restart = loongson_restart; |
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_machine_halt = loongson_halt; |
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pm_power_off = loongson_poweroff; |
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return 0; |
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} |
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arch_initcall(mips_reboot_setup);
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