sparc64: Move reboot handling into seperate file and kill power reg programming.

We should always use prom_power_off().
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/reboot.h

-#ifndef _SPARC64_REBOOT_H
-#define _SPARC64_REBOOT_H
-
-extern void machine_alt_power_off(void);
-
-#endif /* _SPARC64_REBOOT_H */

arch/sparc64/kernel/Makefile

@@ -7,7 +7,7 @@ EXTRA_CFLAGS := -Werror
 
 extra-y		:= head.o init_task.o vmlinux.lds
 
-obj-y		:= process.o setup.o cpu.o idprom.o \
+obj-y		:= process.o setup.o cpu.o idprom.o reboot.o \
 		   traps.o auxio.o una_asm.o sysfs.o iommu.o \
 		   irq.o ptrace.o time.o sys_sparc.o signal.o \
 		   unaligned.o central.o starfire.o \

arch/sparc64/kernel/power.c

@@ -7,21 +7,11 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
-#include <linux/pm.h>
 #include <linux/reboot.h>
 #include <linux/of_device.h>
 
-#include <asm/auxio.h>
 #include <asm/prom.h>
 #include <asm/io.h>
-#include <asm/sstate.h>
-#include <asm/reboot.h>
-
-/*
- * sysctl - toggle power-off restriction for serial console 
- * systems in machine_power_off()
- */
-int scons_pwroff = 1; 
 
 static void __iomem *power_reg;
 
@@ -33,31 +23,6 @@ static irqreturn_t power_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void (*poweroff_method)(void) = machine_alt_power_off;
-
-void machine_power_off(void)
-{
-	sstate_poweroff();
-	if (strcmp(of_console_device->type, "serial") || scons_pwroff) {
-		if (power_reg) {
-			/* Both register bits seem to have the
-			 * same effect, so until I figure out
-			 * what the difference is...
-			 */
-			writel(AUXIO_PCIO_CPWR_OFF | AUXIO_PCIO_SPWR_OFF, power_reg);
-		} else {
-			if (poweroff_method != NULL) {
-				poweroff_method();
-				/* not reached */
-			}
-		}
-	}
-	machine_halt();
-}
-
-void (*pm_power_off)(void) = machine_power_off;
-EXPORT_SYMBOL(pm_power_off);
-
 static int __init has_button_interrupt(unsigned int irq, struct device_node *dp)
 {
 	if (irq == 0xffffffff)
@@ -78,8 +43,6 @@ static int __devinit power_probe(struct of_device *op, const struct of_device_id
 	printk(KERN_INFO "%s: Control reg at %lx\n",
 	       op->node->name, res->start);
 
-	poweroff_method = machine_halt;  /* able to use the standard halt */
-
 	if (has_button_interrupt(irq, op->node)) {
 		if (request_irq(irq,
 				power_handler, 0, "power", NULL) < 0)

arch/sparc64/kernel/process.c

@@ -22,7 +22,6 @@
 #include <linux/ptrace.h>
 #include <linux/slab.h>
 #include <linux/user.h>
-#include <linux/reboot.h>
 #include <linux/delay.h>
 #include <linux/compat.h>
 #include <linux/tick.h>
@@ -31,7 +30,6 @@
 #include <linux/elfcore.h>
 #include <linux/sysrq.h>
 
-#include <asm/oplib.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
 #include <asm/page.h>
@@ -46,8 +44,6 @@
 #include <asm/mmu_context.h>
 #include <asm/unistd.h>
 #include <asm/hypervisor.h>
-#include <asm/sstate.h>
-#include <asm/reboot.h>
 #include <asm/syscalls.h>
 #include <asm/irq_regs.h>
 #include <asm/smp.h>
@@ -115,35 +111,6 @@ void cpu_idle(void)
 	}
 }
 
-void machine_halt(void)
-{
-	sstate_halt();
-	prom_halt();
-	panic("Halt failed!");
-}
-
-void machine_alt_power_off(void)
-{
-	sstate_poweroff();
-	prom_halt_power_off();
-	panic("Power-off failed!");
-}
-
-void machine_restart(char * cmd)
-{
-	char *p;
-	
-	sstate_reboot();
-	p = strchr (reboot_command, '\n');
-	if (p) *p = 0;
-	if (cmd)
-		prom_reboot(cmd);
-	if (*reboot_command)
-		prom_reboot(reboot_command);
-	prom_reboot("");
-	panic("Reboot failed!");
-}
-
 #ifdef CONFIG_COMPAT
 static void show_regwindow32(struct pt_regs *regs)
 {

arch/sparc64/kernel/reboot.c

+/* reboot.c: reboot/shutdown/halt/poweroff handling
+ *
+ * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+
+#include <asm/sstate.h>
+#include <asm/oplib.h>
+#include <asm/prom.h>
+
+/* sysctl - toggle power-off restriction for serial console
+ * systems in machine_power_off()
+ */
+int scons_pwroff = 1;
+
+/* This isn't actually used, it exists merely to satisfy the
+ * reference in kernel/sys.c
+ */
+void (*pm_power_off)(void) = machine_power_off;
+EXPORT_SYMBOL(pm_power_off);
+
+void machine_power_off(void)
+{
+	sstate_poweroff();
+	if (strcmp(of_console_device->type, "serial") || scons_pwroff)
+		prom_halt_power_off();
+
+	prom_halt();
+}
+
+void machine_halt(void)
+{
+	sstate_halt();
+	prom_halt();
+	panic("Halt failed!");
+}
+
+void machine_restart(char *cmd)
+{
+	char *p;
+
+	sstate_reboot();
+	p = strchr(reboot_command, '\n');
+	if (p)
+		*p = 0;
+	if (cmd)
+		prom_reboot(cmd);
+	if (*reboot_command)
+		prom_reboot(reboot_command);
+	prom_reboot("");
+	panic("Reboot failed!");
+}
+