diff --git a/cpu/74xx_7xx/cache.S b/cpu/74xx_7xx/cache.S
index a793d799d1..3a745cbe03 100644
--- a/cpu/74xx_7xx/cache.S
+++ b/cpu/74xx_7xx/cache.S
@@ -329,14 +329,28 @@ _GLOBAL(dcache_status)
 	blr
 
 /*
- * Invalidate L2 cache using L2I and polling L2IP
+ * Invalidate L2 cache using L2I and polling L2IP or L2I
  */
 _GLOBAL(l2cache_invalidate)
 	sync
+	mfspr r3, l2cr
 	oris	r3, r3, L2CR_L2I@h
 	sync
 	mtspr	l2cr, r3
 	sync
+	mfspr r3, PVR
+	sync
+	rlwinm r3, r3, 16,16,31
+	cmpli 0,r3,0x8000  /* 7451, 7441 */
+	beq 0,inv_7450
+	cmpli 0,r3,0x8001  /* 7455, 7445 */
+	beq 0,inv_7450
+	cmpli 0,r3,0x8002  /* 7457, 7447 */
+	beq 0,inv_7450
+	cmpli 0,r3,0x8003  /* 7447A */
+	beq 0,inv_7450
+	cmpli 0,r3,0x8004  /* 7448 */
+	beq 0,inv_7450
 invl2:
 	mfspr	r3, l2cr
 	andi.	r3, r3, L2CR_L2IP
@@ -348,6 +362,11 @@ invl2:
 	mtspr	l2cr, r3
 	sync
 	blr
+inv_7450:
+	mfspr	r3, l2cr
+	andis. r3, r3, L2CR_L2I@h
+	bne inv_7450
+	blr
 
 /*
  * Enable L2 cache
diff --git a/cpu/mpc86xx/cache.S b/cpu/mpc86xx/cache.S
index f316b3ec13..2e4ea0239f 100644
--- a/cpu/mpc86xx/cache.S
+++ b/cpu/mpc86xx/cache.S
@@ -338,7 +338,7 @@ _GLOBAL(l2cache_invalidate)
 
 invl2:
 	mfspr	r3, l2cr
-	andi.	r3, r3, L2CR_L2I@h
+	andis.	r3, r3, L2CR_L2I@h
 	bne	invl2
 	blr