diff --git a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
index 8393bc548987..312739117bb0 100644
--- a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
@@ -19,18 +19,18 @@
 	.set	push
 	.set	mips64
 	/* Set LPA on LOONGSON3 config3 */
-	mfc0	t0, $16, 3
+	mfc0	t0, CP0_CONFIG3
 	or	t0, (0x1 << 7)
-	mtc0	t0, $16, 3
+	mtc0	t0, CP0_CONFIG3
 	/* Set ELPA on LOONGSON3 pagegrain */
-	mfc0	t0, $5, 1
+	mfc0	t0, CP0_PAGEGRAIN
 	or	t0, (0x1 << 29)
-	mtc0	t0, $5, 1
+	mtc0	t0, CP0_PAGEGRAIN
 #ifdef CONFIG_LOONGSON3_ENHANCEMENT
 	/* Enable STFill Buffer */
-	mfc0	t0, $16, 6
+	mfc0	t0, CP0_CONFIG6
 	or	t0, 0x100
-	mtc0	t0, $16, 6
+	mtc0	t0, CP0_CONFIG6
 #endif
 	_ehb
 	.set	pop
@@ -45,18 +45,18 @@
 	.set	push
 	.set	mips64
 	/* Set LPA on LOONGSON3 config3 */
-	mfc0	t0, $16, 3
+	mfc0	t0, CP0_CONFIG3
 	or	t0, (0x1 << 7)
-	mtc0	t0, $16, 3
+	mtc0	t0, CP0_CONFIG3
 	/* Set ELPA on LOONGSON3 pagegrain */
-	mfc0	t0, $5, 1
+	mfc0	t0, CP0_PAGEGRAIN
 	or	t0, (0x1 << 29)
-	mtc0	t0, $5, 1
+	mtc0	t0, CP0_PAGEGRAIN
 #ifdef CONFIG_LOONGSON3_ENHANCEMENT
 	/* Enable STFill Buffer */
-	mfc0	t0, $16, 6
+	mfc0	t0, CP0_CONFIG6
 	or	t0, 0x100
-	mtc0	t0, $16, 6
+	mtc0	t0, CP0_CONFIG6
 #endif
 	_ehb
 	.set	pop
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 0bc270806ec5..b6237ffbacf5 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -51,6 +51,7 @@
 #define CP0_GLOBALNUMBER $3, 1
 #define CP0_CONTEXT $4
 #define CP0_PAGEMASK $5
+#define CP0_PAGEGRAIN $5, 1
 #define CP0_SEGCTL0 $5, 2
 #define CP0_SEGCTL1 $5, 3
 #define CP0_SEGCTL2 $5, 4
@@ -77,6 +78,7 @@
 #define CP0_CONFIG $16
 #define CP0_CONFIG3 $16, 3
 #define CP0_CONFIG5 $16, 5
+#define CP0_CONFIG6 $16, 6
 #define CP0_LLADDR $17
 #define CP0_WATCHLO $18
 #define CP0_WATCHHI $19