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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-26 16:54:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-26 16:54:27 -0800
commit64d497f55379b1e320a08ec2426468d96f5642ec (patch)
tree22b9ab3c5e69c5cc2728cbc2ca7fc7623beef8f1 /arch/sh/kernel/reboot.c
parent37d4008484977f60d5d37499a2670c79b214dd46 (diff)
parentb5f5fe80fa98a60daa0fa94512d1599b1e26674c (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (187 commits) sh: remove dead LED code for migo-r and ms7724se sh: ecovec build fix for CONFIG_I2C=n sh: ecovec r-standby support sh: ms7724se r-standby support sh: SH-Mobile R-standby register save/restore clocksource: Fix up a registration/IRQ race in the sh drivers. sh: ms7724: modify scan_timing for KEYSC sh: ms7724: Add sh_sir support sh: mach-ecovec24: Add sh_sir support sh: wire up SET/GET_UNALIGN_CTL. sh: allow alignment fault mode to be configured at kernel boot. sh: sh7724: Update FSI/SPU2 clock sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec sh: add sh7724 kick callback to clk_div4_table sh: introduce struct clk_div4_table sh: clock-cpg div4 set_rate() shift fix sh: Turn on speculative return for SH7785 and SH7786 sh: Merge legacy and dynamic PMB modes. sh: Use uncached I/O helpers in PMB setup. sh: Provide uncached I/O helpers. ...
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