7 files changed, 55 insertions, 10 deletions

diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S
index ba8750176d91..05372ed6c568 100644
--- a/arch/sh/kernel/cpu/sh5/entry.S
+++ b/arch/sh/kernel/cpu/sh5/entry.S
@@ -143,12 +143,22 @@ resvec_save_area:
 trap_jtable:
         .long   do_exception_error              /* 0x000 */
         .long   do_exception_error              /* 0x020 */
+#ifdef CONFIG_MMU
         .long   tlb_miss_load                           /* 0x040 */
         .long   tlb_miss_store                          /* 0x060 */
+#else
+        .long   do_exception_error
+        .long   do_exception_error
+#endif
         ! ARTIFICIAL pseudo-EXPEVT setting
         .long   do_debug_interrupt              /* 0x080 */
+#ifdef CONFIG_MMU
         .long   tlb_miss_load                           /* 0x0A0 */
         .long   tlb_miss_store                          /* 0x0C0 */
+#else
+        .long   do_exception_error
+        .long   do_exception_error
+#endif
         .long   do_address_error_load   /* 0x0E0 */
         .long   do_address_error_store  /* 0x100 */
 #ifdef CONFIG_SH_FPU
@@ -185,10 +195,18 @@ trap_jtable:
         .endr
         .long   do_IRQ                  /* 0xA00 */
         .long   do_IRQ                  /* 0xA20 */
+#ifdef CONFIG_MMU
         .long   itlb_miss_or_IRQ                        /* 0xA40 */
+#else
+        .long   do_IRQ
+#endif
         .long   do_IRQ                  /* 0xA60 */
         .long   do_IRQ                  /* 0xA80 */
+#ifdef CONFIG_MMU
         .long   itlb_miss_or_IRQ                        /* 0xAA0 */
+#else
+        .long   do_IRQ
+#endif
         .long   do_exception_error              /* 0xAC0 */
         .long   do_address_error_exec   /* 0xAE0 */
         .rept 8
@@ -274,6 +292,7 @@ not_a_tlb_miss:
          * Instead of '.space 1024-TEXT_SIZE' place the RESVEC
          * block making sure the final alignment is correct.
          */
+#ifdef CONFIG_MMU
 tlb_miss:
         synco   /* TAKum03020 (but probably a good idea anyway.) */
         putcon  SP, KCR1
@@ -377,6 +396,9 @@ fixup_to_invoke_general_handler:
         getcon  KCR1, SP
         pta     handle_exception, tr0
         blink   tr0, ZERO
+#else /* CONFIG_MMU */
+        .balign 256
+#endif
 
 /* NB TAKE GREAT CARE HERE TO ENSURE THAT THE INTERRUPT CODE
    DOES END UP AT VBR+0x600 */
@@ -1103,6 +1125,7 @@ restore_all:
  * fpu_error_or_IRQ? is a helper to deflect to the right cause.
  *
  */
+#ifdef CONFIG_MMU
 tlb_miss_load:
         or      SP, ZERO, r2
         or      ZERO, ZERO, r3          /* Read */
@@ -1132,6 +1155,7 @@ call_do_page_fault:
         movi    do_page_fault, r6
         ptabs   r6, tr0
         blink   tr0, ZERO
+#endif /* CONFIG_MMU */
 
 fpu_error_or_IRQA:
         pta     its_IRQ, tr0
@@ -1481,6 +1505,7 @@ poke_real_address_q:
         ptabs   LINK, tr0
         blink   tr0, r63
 
+#ifdef CONFIG_MMU
 /*
  * --- User Access Handling Section
  */
@@ -1604,6 +1629,7 @@ ___clear_user_exit:
         ptabs   LINK, tr0
         blink   tr0, ZERO
 
+#endif /* CONFIG_MMU */
 
 /*
  * int __strncpy_from_user(unsigned long __dest, unsigned long __src,
@@ -2014,9 +2040,11 @@ sa_default_restorer:
         .global asm_uaccess_start       /* Just a marker */
 asm_uaccess_start:
 
+#ifdef CONFIG_MMU
         .long   ___copy_user1, ___copy_user_exit
         .long   ___copy_user2, ___copy_user_exit
         .long   ___clear_user1, ___clear_user_exit
+#endif
         .long   ___strncpy_from_user1, ___strncpy_from_user_exit
         .long   ___strnlen_user1, ___strnlen_user_exit
         .long   ___get_user_asm_b1, ___get_user_asm_b_exit
diff --git a/arch/sh/mm/Makefile_64 b/arch/sh/mm/Makefile_64
index cbd6aa33c5ac..0d92a8a3ac9a 100644
--- a/arch/sh/mm/Makefile_64
+++ b/arch/sh/mm/Makefile_64
@@ -2,10 +2,11 @@
 # Makefile for the Linux SuperH-specific parts of the memory manager.
 #
 
-obj-y                   := init.o extable_64.o consistent.o
+obj-y                   := init.o consistent.o
 
-mmu-y                   := tlb-nommu.o pg-nommu.o
-mmu-$(CONFIG_MMU)       := fault_64.o ioremap_64.o tlbflush_64.o tlb-sh5.o
+mmu-y                   := tlb-nommu.o pg-nommu.o extable_32.o
+mmu-$(CONFIG_MMU)       := fault_64.o ioremap_64.o tlbflush_64.o tlb-sh5.o \
+                           extable_64.o
 
 ifndef CONFIG_CACHE_OFF
 obj-y                   += cache-sh5.o
diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c
index 3877321fcede..9e277ec7d536 100644
--- a/arch/sh/mm/cache-sh5.c
+++ b/arch/sh/mm/cache-sh5.c
@@ -714,6 +714,7 @@ void flush_cache_sigtramp(unsigned long vaddr)
         sh64_icache_inv_current_user_range(vaddr, end);
 }
 
+#ifdef CONFIG_MMU
 /*
  * These *MUST* lie in an area of virtual address space that's otherwise
  * unused.
@@ -830,3 +831,4 @@ void clear_user_page(void *to, unsigned long address, struct page *page)
         else
                 sh64_clear_user_page_coloured(to, address);
 }
+#endif
diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h
index 356e50d06745..a4fbf0c84fb1 100644
--- a/include/asm-sh/io.h
+++ b/include/asm-sh/io.h
@@ -268,11 +268,6 @@ unsigned long long peek_real_address_q(unsigned long long addr);
 unsigned long long poke_real_address_q(unsigned long long addr,
                                        unsigned long long val);
 
-/* arch/sh/mm/ioremap_64.c */
-unsigned long onchip_remap(unsigned long addr, unsigned long size,
-                           const char *name);
-extern void onchip_unmap(unsigned long vaddr);
-
 #if !defined(CONFIG_MMU)
 #define virt_to_phys(address)   ((unsigned long)(address))
 #define phys_to_virt(address)   ((void *)(address))
@@ -302,9 +297,16 @@ extern void onchip_unmap(unsigned long vaddr);
 void __iomem *__ioremap(unsigned long offset, unsigned long size,
                         unsigned long flags);
 void __iounmap(void __iomem *addr);
+
+/* arch/sh/mm/ioremap_64.c */
+unsigned long onchip_remap(unsigned long addr, unsigned long size,
+                           const char *name);
+extern void onchip_unmap(unsigned long vaddr);
 #else
 #define __ioremap(offset, size, flags)  ((void __iomem *)(offset))
 #define __iounmap(addr)                 do { } while (0)
+#define onchip_remap(addr, size, name)  (addr)
+#define onchip_unmap(addr)              do { } while (0)
 #endif /* CONFIG_MMU */
 
 static inline void __iomem *
diff --git a/include/asm-sh/mmu_context.h b/include/asm-sh/mmu_context.h
index fe58d00b250c..87e812f68bb0 100644
--- a/include/asm-sh/mmu_context.h
+++ b/include/asm-sh/mmu_context.h
@@ -27,6 +27,7 @@
 /* ASID is 8-bit value, so it can't be 0x100 */
 #define MMU_NO_ASID                     0x100
 
+#ifdef CONFIG_MMU
 #define asid_cache(cpu)         (cpu_data[cpu].asid_cache)
 #define cpu_context(cpu, mm)    ((mm)->context.id[cpu])
 
@@ -38,7 +39,6 @@
  */
 #define MMU_VPN_MASK    0xfffff000
 
-#ifdef CONFIG_MMU
 #if defined(CONFIG_SUPERH32)
 #include "mmu_context_32.h"
 #else
@@ -129,6 +129,8 @@ static inline void switch_mm(struct mm_struct *prev,
 #define destroy_context(mm)             do { } while (0)
 #define set_asid(asid)                  do { } while (0)
 #define get_asid()                      (0)
+#define cpu_asid(cpu, mm)               ({ (void)cpu; 0; })
+#define switch_and_save_asid(asid)      (0)
 #define set_TTB(pgd)                    do { } while (0)
 #define get_TTB()                       (0)
 #define activate_context(mm,cpu)        do { } while (0)
diff --git a/include/asm-sh/tlb_64.h b/include/asm-sh/tlb_64.h
index 0308e05fc57b..0a96f3af69e3 100644
--- a/include/asm-sh/tlb_64.h
+++ b/include/asm-sh/tlb_64.h
@@ -56,6 +56,7 @@ static inline void __flush_tlb_slot(unsigned long long slot)
         __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
 }
 
+#ifdef CONFIG_MMU
 /* arch/sh64/mm/tlb.c */
 int sh64_tlb_init(void);
 unsigned long long sh64_next_free_dtlb_entry(void);
@@ -64,6 +65,13 @@ int sh64_put_wired_dtlb_entry(unsigned long long entry);
 void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr,
                          unsigned long asid, unsigned long paddr);
 void sh64_teardown_tlb_slot(unsigned long long config_addr);
-
+#else
+#define sh64_tlb_init()                                 do { } while (0)
+#define sh64_next_free_dtlb_entry()                     (0)
+#define sh64_get_wired_dtlb_entry()                     (0)
+#define sh64_put_wired_dtlb_entry(entry)                do { } while (0)
+#define sh64_setup_tlb_slot(conf, virt, asid, phys)     do { } while (0)
+#define sh64_teardown_tlb_slot(addr)                    do { } while (0)
+#endif /* CONFIG_MMU */
 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_SH_TLB_64_H */
diff --git a/include/asm-sh/uaccess_64.h b/include/asm-sh/uaccess_64.h
index f956b7b316c7..a9b68d094844 100644
--- a/include/asm-sh/uaccess_64.h
+++ b/include/asm-sh/uaccess_64.h
@@ -274,7 +274,9 @@ struct exception_table_entry
         unsigned long insn, fixup;
 };
 
+#ifdef CONFIG_MMU
 #define ARCH_HAS_SEARCH_EXTABLE
+#endif
 
 /* Returns 0 if exception not found and fixup.unit otherwise.  */
 extern unsigned long search_exception_table(unsigned long addr);