summaryrefslogtreecommitdiffstats
path: root/arch/sh/kernel/reboot.c
diff options
context:
space:
mode:
authorRussell King <rmk+kernel@arm.linux.org.uk>2010-03-08 21:21:04 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-03-08 21:21:04 +0100
commit988addf82e4c03739375279de73929580a2d4a6a (patch)
tree989ae1cd4e264bbad80c65f04480486246e7b9f3 /arch/sh/kernel/reboot.c
parentMerge branch 'for-rmk/samsung6' of git://git.fluff.org/bjdooks/linux into dev... (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/amit/virtio-console (diff)
downloadlinux-988addf82e4c03739375279de73929580a2d4a6a.tar.xz
linux-988addf82e4c03739375279de73929580a2d4a6a.zip
Merge branch 'origin' into devel-stable
Conflicts: arch/arm/mach-mx2/devices.c arch/arm/mach-mx2/devices.h sound/soc/pxa/pxa-ssp.c
Diffstat (limited to 'arch/sh/kernel/reboot.c')
-rw-r--r--arch/sh/kernel/reboot.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/sh/kernel/reboot.c b/arch/sh/kernel/reboot.c
new file mode 100644
index 000000000000..b1fca66bb92e
--- /dev/null
+++ b/arch/sh/kernel/reboot.c
@@ -0,0 +1,98 @@
+#include <linux/pm.h>
+#include <linux/kexec.h>
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/module.h>
+#ifdef CONFIG_SUPERH32
+#include <asm/watchdog.h>
+#endif
+#include <asm/addrspace.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+#ifdef CONFIG_SUPERH32
+static void watchdog_trigger_immediate(void)
+{
+ sh_wdt_write_cnt(0xFF);
+ sh_wdt_write_csr(0xC2);
+}
+#endif
+
+static void native_machine_restart(char * __unused)
+{
+ local_irq_disable();
+
+ /* Address error with SR.BL=1 first. */
+ trigger_address_error();
+
+#ifdef CONFIG_SUPERH32
+ /* If that fails or is unsupported, go for the watchdog next. */
+ watchdog_trigger_immediate();
+#endif
+
+ /*
+ * Give up and sleep.
+ */
+ while (1)
+ cpu_sleep();
+}
+
+static void native_machine_shutdown(void)
+{
+ smp_send_stop();
+}
+
+static void native_machine_power_off(void)
+{
+ if (pm_power_off)
+ pm_power_off();
+}
+
+static void native_machine_halt(void)
+{
+ /* stop other cpus */
+ machine_shutdown();
+
+ /* stop this cpu */
+ stop_this_cpu(NULL);
+}
+
+struct machine_ops machine_ops = {
+ .power_off = native_machine_power_off,
+ .shutdown = native_machine_shutdown,
+ .restart = native_machine_restart,
+ .halt = native_machine_halt,
+#ifdef CONFIG_KEXEC
+ .crash_shutdown = native_machine_crash_shutdown,
+#endif
+};
+
+void machine_power_off(void)
+{
+ machine_ops.power_off();
+}
+
+void machine_shutdown(void)
+{
+ machine_ops.shutdown();
+}
+
+void machine_restart(char *cmd)
+{
+ machine_ops.restart(cmd);
+}
+
+void machine_halt(void)
+{
+ machine_ops.halt();
+}
+
+#ifdef CONFIG_KEXEC
+void machine_crash_shutdown(struct pt_regs *regs)
+{
+ machine_ops.crash_shutdown(regs);
+}
+#endif