4 files changed, 27 insertions, 0 deletions
diff --git a/arch/sh/include/asm/tlbflush.h b/arch/sh/include/asm/tlbflush.h
index e0ac97221ae..0df66f0c728 100644
--- a/arch/sh/include/asm/tlbflush.h
+++ b/arch/sh/include/asm/tlbflush.h
@@ -21,6 +21,8 @@ extern void local_flush_tlb_kernel_range(unsigned long start,
 					 unsigned long end);
 extern void local_flush_tlb_one(unsigned long asid, unsigned long page);
 
+extern void __flush_tlb_global(void);
+
 #ifdef CONFIG_SMP
 
 extern void flush_tlb_all(void);
diff --git a/arch/sh/kernel/reboot.c b/arch/sh/kernel/reboot.c
index b1fca66bb92..ca6a5ca6401 100644
--- a/arch/sh/kernel/reboot.c
+++ b/arch/sh/kernel/reboot.c
@@ -9,6 +9,7 @@
 #include <asm/addrspace.h>
 #include <asm/reboot.h>
 #include <asm/system.h>
+#include <asm/tlbflush.h>
 
 void (*pm_power_off)(void);
 EXPORT_SYMBOL(pm_power_off);
@@ -25,6 +26,9 @@ static void native_machine_restart(char * __unused)
 {
 	local_irq_disable();
 
+	/* Destroy all of the TLBs in preparation for reset by MMU */
+	__flush_tlb_global();
+
 	/* Address error with SR.BL=1 first. */
 	trigger_address_error();
 
diff --git a/arch/sh/mm/tlbflush_32.c b/arch/sh/mm/tlbflush_32.c
index 3fbe03ce8fe..a6a20d6de4c 100644
--- a/arch/sh/mm/tlbflush_32.c
+++ b/arch/sh/mm/tlbflush_32.c
@@ -119,3 +119,19 @@ void local_flush_tlb_mm(struct mm_struct *mm)
 		local_irq_restore(flags);
 	}
 }
+
+void __flush_tlb_global(void)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/*
+	 * This is the most destructive of the TLB flushing options,
+	 * and will tear down all of the UTLB/ITLB mappings, including
+	 * wired entries.
+	 */
+	__raw_writel(__raw_readl(MMUCR) | MMUCR_TI, MMUCR);
+
+	local_irq_restore(flags);
+}
diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c
index 03db41cc126..7f5810f5dfd 100644
--- a/arch/sh/mm/tlbflush_64.c
+++ b/arch/sh/mm/tlbflush_64.c
@@ -455,6 +455,11 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
         flush_tlb_all();
 }
 
+void __flush_tlb_global(void)
+{
+	flush_tlb_all();
+}
+
 void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
 {
 }