From: Kumar Gala <galak@kernel.crashing.org>
Date: Thu, 12 Feb 2009 22:12:40 +0000 (-0600)
Subject: powerpc/book-3e: Introduce concept of Book-3e MMU
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=70fe3af8403f85196bb74f22ce4813db7dfedc1a;p=linux-2.6-omap-h63xx.git

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 6e763991131..5c78079cfa3 100644
--- 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 6f7eb7e00c7..301c646d1a7 100644
--- 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 e868b5c5072..9428c0e11b2 100644
--- 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)