1 files changed, 70 insertions, 0 deletions
diff --git a/arch/mips/loongson/common/reset.c b/arch/mips/loongson/common/reset.c
new file mode 100644
index 00000000..9e10d622
--- /dev/null
+++ b/arch/mips/loongson/common/reset.c
@@ -0,0 +1,70 @@
+/*
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ * Copyright (C) 2009 Lemote, Inc.
+ * Author: Zhangjin Wu, wuzhangjin@gmail.com
+ */
+#include <linux/init.h>
+#include <linux/pm.h>
+
+#include <asm/reboot.h>
+
+#include <loongson.h>
+
+static inline void loongson_reboot(void)
+{
+#ifndef CONFIG_CPU_JUMP_WORKAROUNDS
+	((void (*)(void))ioremap_nocache(LOONGSON_BOOT_BASE, 4)) ();
+#else
+	void (*func)(void);
+
+	func = (void *)ioremap_nocache(LOONGSON_BOOT_BASE, 4);
+
+	__asm__ __volatile__(
+	"       .set    noat                                            \n"
+	"       jr      %[func]                                         \n"
+	"       .set    at                                              \n"
+	: /* No outputs */
+	: [func] "r" (func));
+#endif
+}
+
+static void loongson_restart(char *command)
+{
+	/* do preparation for reboot */
+	mach_prepare_reboot();
+
+	/* reboot via jumping to boot base address */
+	loongson_reboot();
+}
+
+static void loongson_poweroff(void)
+{
+	mach_prepare_shutdown();
+	unreachable();
+}
+
+static void loongson_halt(void)
+{
+	pr_notice("\n\n** You can safely turn off the power now **\n\n");
+	while (1) {
+		if (cpu_wait)
+			cpu_wait();
+	}
+}
+
+static int __init mips_reboot_setup(void)
+{
+	_machine_restart = loongson_restart;
+	_machine_halt = loongson_halt;
+	pm_power_off = loongson_poweroff;
+
+	return 0;
+}
+
+arch_initcall(mips_reboot_setup);