From c583122c26ad04bb2379933dc5acc8b9479d6c67 Mon Sep 17 00:00:00 2001
From: Thiemo Seufer <ths@networkno.de>
Date: Mon, 15 May 2006 18:59:34 +0100
Subject: [MIPS] Qemu system shutdown support

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/qemu/q-reset.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 arch/mips/qemu/q-reset.c

(limited to 'arch/mips/qemu/q-reset.c')

diff --git a/arch/mips/qemu/q-reset.c b/arch/mips/qemu/q-reset.c
new file mode 100644
index 00000000000..c04ebcfc784
--- /dev/null
+++ b/arch/mips/qemu/q-reset.c
@@ -0,0 +1,34 @@
+#include <linux/config.h>
+
+#include <asm/io.h>
+#include <asm/reboot.h>
+#include <asm/cacheflush.h>
+#include <asm/qemu.h>
+
+static void qemu_machine_restart(char *command)
+{
+	volatile unsigned int *reg = (unsigned int *)QEMU_RESTART_REG;
+
+	set_c0_status(ST0_BEV | ST0_ERL);
+	change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+	flush_cache_all();
+	write_c0_wired(0);
+	*reg = 42;
+	while (1)
+		cpu_wait();
+}
+
+static void qemu_machine_halt(void)
+{
+	volatile unsigned int *reg = (unsigned int *)QEMU_HALT_REG;
+
+	*reg = 42;
+	while (1)
+		cpu_wait();
+}
+
+void qemu_reboot_setup(void)
+{
+	_machine_restart = qemu_machine_restart;
+	_machine_halt = qemu_machine_halt;
+}
-- 
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