powerpc: Add support for early tlbilx opcode

[safe/jmp/linux-2.6] / arch / powerpc / include / asm / mmu.h

diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index dc82dcd..86d2366 100644 (file)
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -46,6 +46,18 @@
  */
 #define MMU_FTR_LOCK_BCAST_INVAL       ASM_CONST(0x00100000)
 
+/* This indicates that the processor doesn't handle way selection
+ * properly and needs SW to track and update the LRU state.  This
+ * is specific to an errata on e300c2/c3/c4 class parts
+ */
+#define MMU_FTR_NEED_DTLB_SW_LRU       ASM_CONST(0x00200000)
+
+/* This indicates that the processor uses the wrong opcode for tlbilx
+ * instructions.  During the ISA 2.06 development the opcode for tlbilx
+ * changed and some early implementations used to old opcode
+ */
+#define MMU_FTR_TLBILX_EARLY_OPCODE    ASM_CONST(0x00400000)
+
 #ifndef __ASSEMBLY__
 #include <asm/cputable.h>
 
@@ -56,6 +68,10 @@ static inline int mmu_has_feature(unsigned long feature)
 
 extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
 
+/* MMU initialization (64-bit only fo now) */
+extern void early_init_mmu(void);
+extern void early_init_mmu_secondary(void);
+
 #endif /* !__ASSEMBLY__ */