ARC: mm: PAE40 support

[linux-2.6-microblaze.git] / arch / arc / include / asm / mmu.h

diff --git a/arch/arc/include/asm/mmu.h b/arch/arc/include/asm/mmu.h
index 0f9c3eb..b144d7c 100644 (file)
--- a/arch/arc/include/asm/mmu.h
+++ b/arch/arc/include/asm/mmu.h
@@ -24,6 +24,7 @@
 #if (CONFIG_ARC_MMU_VER < 4)
 #define ARC_REG_TLBPD0         0x405
 #define ARC_REG_TLBPD1         0x406
+#define ARC_REG_TLBPD1HI       0       /* Dummy: allows code sharing with ARC700 */
 #define ARC_REG_TLBINDEX       0x407
 #define ARC_REG_TLBCOMMAND     0x408
 #define ARC_REG_PID            0x409
@@ -31,6 +32,7 @@
 #else
 #define ARC_REG_TLBPD0         0x460
 #define ARC_REG_TLBPD1         0x461
+#define ARC_REG_TLBPD1HI       0x463
 #define ARC_REG_TLBINDEX       0x464
 #define ARC_REG_TLBCOMMAND     0x465
 #define ARC_REG_PID            0x468
@@ -83,6 +85,11 @@ void arc_mmu_init(void);
 extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len);
 void read_decode_mmu_bcr(void);
 
+static inline int is_pae40_enabled(void)
+{
+       return IS_ENABLED(CONFIG_ARC_HAS_PAE40);
+}
+
 #endif /* !__ASSEMBLY__ */
 
 #endif