1 files changed, 9 insertions, 0 deletions

diff --git a/arch/sh/include/asm/fixmap.h b/arch/sh/include/asm/fixmap.h
index 5ac1e40a511c..38a1de866873 100644
--- a/arch/sh/include/asm/fixmap.h
+++ b/arch/sh/include/asm/fixmap.h
@@ -60,11 +60,20 @@ enum fixed_addresses {
         FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
         FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
 #endif
+        /*
+         * FIX_IOREMAP entries are useful for mapping physical address
+         * space before ioremap() is useable, e.g. really early in boot
+         * before kmalloc() is working.
+         */
+#define FIX_N_IOREMAPS  32
+        FIX_IOREMAP_BEGIN,
+        FIX_IOREMAP_END = FIX_IOREMAP_BEGIN + FIX_N_IOREMAPS,
         __end_of_fixed_addresses
 };
 
 extern void __set_fixmap(enum fixed_addresses idx,
                          unsigned long phys, pgprot_t flags);
+extern void __clear_fixmap(enum fixed_addresses idx, pgprot_t flags);
 
 #define set_fixmap(idx, phys) \
                 __set_fixmap(idx, phys, PAGE_KERNEL)