3 files changed, 13 insertions, 5 deletions

diff --git a/include/asm-sh/addrspace.h b/include/asm-sh/addrspace.h
index 4207368267b1..b860218e402e 100644
--- a/include/asm-sh/addrspace.h
+++ b/include/asm-sh/addrspace.h
@@ -14,7 +14,7 @@
 #include <asm/cpu/addrspace.h>
 
 /* Memory segments (32bit Privileged mode addresses)  */
-#ifdef CONFIG_MMU
+#ifndef CONFIG_CPU_SH2A
 #define P0SEG           0x00000000
 #define P1SEG           0x80000000
 #define P2SEG           0xa0000000
@@ -24,7 +24,7 @@
 #define P0SEG           0x00000000
 #define P1SEG           0x00000000
 #define P2SEG           0x20000000
-#define P3SEG           0x40000000
+#define P3SEG           0x00000000
 #define P4SEG           0x80000000
 #endif
 
diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h
index 27dba653cbe7..377160b86295 100644
--- a/include/asm-sh/io.h
+++ b/include/asm-sh/io.h
@@ -216,6 +216,7 @@ static inline void ctrl_delay(void)
 
 #define IO_SPACE_LIMIT 0xffffffff
 
+#ifdef CONFIG_MMU
 /*
  * Change virtual addresses to physical addresses and vv.
  * These are trivial on the 1:1 Linux/SuperH mapping
@@ -229,6 +230,10 @@ static inline void *phys_to_virt(unsigned long address)
 {
         return (void *)P1SEGADDR(address);
 }
+#else
+#define phys_to_virt(address)   ((void *)(address))
+#define virt_to_phys(address)   ((unsigned long)(address))
+#endif
 
 #define virt_to_bus virt_to_phys
 #define bus_to_virt phys_to_virt
diff --git a/include/asm-sh/uaccess.h b/include/asm-sh/uaccess.h
index 5c3b00c2f107..5c49ed6715f2 100644
--- a/include/asm-sh/uaccess.h
+++ b/include/asm-sh/uaccess.h
@@ -34,12 +34,12 @@
 
 #define segment_eq(a,b) ((a).seg == (b).seg)
 
-#define __addr_ok(addr) \
-        ((unsigned long)(addr) < (current_thread_info()->addr_limit.seg))
-
 #define get_ds()        (KERNEL_DS)
 
 #if !defined(CONFIG_MMU)
+/* NOMMU is always true */
+#define __addr_ok(addr) (1)
+
 static inline mm_segment_t get_fs(void)
 {
         return USER_DS;
@@ -66,6 +66,9 @@ static inline int __access_ok(unsigned long addr, unsigned long size)
         return ((addr >= memory_start) && ((addr + size) < memory_end));
 }
 #else /* CONFIG_MMU */
+#define __addr_ok(addr) \
+        ((unsigned long)(addr) < (current_thread_info()->addr_limit.seg))
+
 #define get_fs()        (current_thread_info()->addr_limit)
 #define set_fs(x)       (current_thread_info()->addr_limit = (x))