1 files changed, 19 insertions, 0 deletions

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 8173e38afd38..432acd07e76a 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -15,6 +15,7 @@
 #include <linux/pagemap.h>
 #include <linux/percpu.h>
 #include <linux/io.h>
+#include <linux/dma-mapping.h>
 #include <asm/mmu_context.h>
 #include <asm/tlb.h>
 #include <asm/cacheflush.h>
@@ -186,11 +187,21 @@ void __init paging_init(void)
         set_fixmap_nocache(FIX_UNCACHED, __pa(&__uncached_start));
 }
 
+/*
+ * Early initialization for any I/O MMUs we might have.
+ */
+static void __init iommu_init(void)
+{
+        no_iommu_init();
+}
+
 void __init mem_init(void)
 {
         int codesize, datasize, initsize;
         int nid;
 
+        iommu_init();
+
         num_physpages = 0;
         high_memory = NULL;
 
@@ -323,4 +334,12 @@ int memory_add_physaddr_to_nid(u64 addr)
 }
 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
 #endif
+
 #endif /* CONFIG_MEMORY_HOTPLUG */
+
+#ifdef CONFIG_PMB
+int __in_29bit_mode(void)
+{
+        return !(ctrl_inl(PMB_PASCR) & PASCR_SE);
+}
+#endif /* CONFIG_PMB */