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-Tag: v2.6.30-rc1~619^2~107^2~1
X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=commitdiff_plain;h=70fe3af8403f85196bb74f22ce4813db7dfedc1a

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
--- 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
--- 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
--- 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)