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97 lines
1.7 KiB
97 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/pm.h> |
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#include <linux/kexec.h> |
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#include <linux/kernel.h> |
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#include <linux/reboot.h> |
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#include <linux/module.h> |
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#include <asm/watchdog.h> |
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#include <asm/addrspace.h> |
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#include <asm/reboot.h> |
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#include <asm/tlbflush.h> |
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#include <asm/traps.h> |
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void (*pm_power_off)(void); |
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EXPORT_SYMBOL(pm_power_off); |
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static void watchdog_trigger_immediate(void) |
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{ |
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sh_wdt_write_cnt(0xFF); |
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sh_wdt_write_csr(0xC2); |
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} |
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static void native_machine_restart(char * __unused) |
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{ |
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local_irq_disable(); |
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/* Destroy all of the TLBs in preparation for reset by MMU */ |
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__flush_tlb_global(); |
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/* Address error with SR.BL=1 first. */ |
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trigger_address_error(); |
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/* If that fails or is unsupported, go for the watchdog next. */ |
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watchdog_trigger_immediate(); |
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/* |
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* Give up and sleep. |
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*/ |
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while (1) |
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cpu_sleep(); |
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} |
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static void native_machine_shutdown(void) |
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{ |
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smp_send_stop(); |
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} |
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static void native_machine_power_off(void) |
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{ |
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if (pm_power_off) |
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pm_power_off(); |
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} |
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static void native_machine_halt(void) |
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{ |
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/* stop other cpus */ |
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machine_shutdown(); |
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/* stop this cpu */ |
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stop_this_cpu(NULL); |
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} |
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struct machine_ops machine_ops = { |
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.power_off = native_machine_power_off, |
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.shutdown = native_machine_shutdown, |
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.restart = native_machine_restart, |
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.halt = native_machine_halt, |
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#ifdef CONFIG_KEXEC |
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.crash_shutdown = native_machine_crash_shutdown, |
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#endif |
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}; |
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void machine_power_off(void) |
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{ |
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machine_ops.power_off(); |
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} |
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void machine_shutdown(void) |
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{ |
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machine_ops.shutdown(); |
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} |
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void machine_restart(char *cmd) |
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{ |
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machine_ops.restart(cmd); |
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} |
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void machine_halt(void) |
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{ |
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machine_ops.halt(); |
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} |
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#ifdef CONFIG_KEXEC |
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void machine_crash_shutdown(struct pt_regs *regs) |
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{ |
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machine_ops.crash_shutdown(regs); |
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} |
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#endif
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