powerpc/book-3e: Introduce concept of Book-3e MMU

The Power ISA 2.06 spec introduces a standard MMU programming model that
is based on the Freescale Book-E MMU programing model.  The Freescale
version is pretty backwards compatiable with the ISA 2.06 definition so
we are starting to refactor some of the Freescale code so it can be
easily shared.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/mmu-fsl-booke.h b/arch/powerpc/include/asm/mmu-book3e.h
similarity index 100%
rename from arch/powerpc/include/asm/mmu-fsl-booke.h
rename to arch/powerpc/include/asm/mmu-book3e.h

diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 6e76399..5c78079 100644 (file)
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -71,9 +71,9 @@ extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
 #elif defined(CONFIG_44x)
 /* 44x-style software loaded TLB */
 #  include <asm/mmu-44x.h>
-#elif defined(CONFIG_FSL_BOOKE)
-/* Freescale Book-E software loaded TLB */
-#  include <asm/mmu-fsl-booke.h>
+#elif defined(CONFIG_PPC_BOOK3E_MMU)
+/* Freescale Book-E software loaded TLB or Book-3e (ISA 2.06+) MMU */
+#  include <asm/mmu-book3e.h>
 #elif defined (CONFIG_PPC_8xx)
 /* Motorola/Freescale 8xx software loaded TLB */
 #  include <asm/mmu-8xx.h>

diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 6f7eb7e..301c646 100644 (file)
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -63,7 +63,7 @@ debug_transfer_to_handler:
 
        .globl  crit_transfer_to_handler
 crit_transfer_to_handler:
-#ifdef CONFIG_FSL_BOOKE
+#ifdef CONFIG_PPC_BOOK3E_MMU
        mfspr   r0,SPRN_MAS0
        stw     r0,MAS0(r11)
        mfspr   r0,SPRN_MAS1
@@ -78,7 +78,7 @@ crit_transfer_to_handler:
        mfspr   r0,SPRN_MAS7
        stw     r0,MAS7(r11)
 #endif /* CONFIG_PHYS_64BIT */
-#endif /* CONFIG_FSL_BOOKE */
+#endif /* CONFIG_PPC_BOOK3E_MMU */
 #ifdef CONFIG_44x
        mfspr   r0,SPRN_MMUCR
        stw     r0,MMUCR(r11)
@@ -914,7 +914,7 @@ exc_exit_restart_end:
        mtspr   SPRN_##exc_lvl_srr0,r9;                                 \
        mtspr   SPRN_##exc_lvl_srr1,r10;
 
-#if defined(CONFIG_FSL_BOOKE)
+#if defined(CONFIG_PPC_BOOK3E_MMU)
 #ifdef CONFIG_PHYS_64BIT
 #define        RESTORE_MAS7                                                    \
        lwz     r11,MAS7(r1);                                           \

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index e868b5c..9428c0e 100644 (file)
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -210,6 +210,10 @@ config PPC_MMU_NOHASH
        def_bool y
        depends on !PPC_STD_MMU
 
+config PPC_BOOK3E_MMU
+       def_bool y
+       depends on FSL_BOOKE
+
 config PPC_MM_SLICES
        bool
        default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)