Add Dcbz(), Dcbi() and Dcbf() routines for MPC83xx.
diff --git a/cpu/mpc83xx/start.S b/cpu/mpc83xx/start.S
index 324f6c3..6e02cce 100644
--- a/cpu/mpc83xx/start.S
+++ b/cpu/mpc83xx/start.S
@@ -836,6 +836,40 @@
mfspr r3, PVR
blr
+/*------------------------------------------------------------------------------- */
+/* Function: ppcDcbf */
+/* Description: Data Cache block flush */
+/* Input: r3 = effective address */
+/* Output: none. */
+/*------------------------------------------------------------------------------- */
+ .globl ppcDcbf
+ppcDcbf:
+ dcbf r0,r3
+ blr
+
+/*------------------------------------------------------------------------------- */
+/* Function: ppcDcbi */
+/* Description: Data Cache block Invalidate */
+/* Input: r3 = effective address */
+/* Output: none. */
+/*------------------------------------------------------------------------------- */
+ .globl ppcDcbi
+ppcDcbi:
+ dcbi r0,r3
+ blr
+
+/*--------------------------------------------------------------------------
+ * Function: ppcDcbz
+ * Description: Data Cache block zero.
+ * Input: r3 = effective address
+ * Output: none.
+ *-------------------------------------------------------------------------- */
+
+ .globl ppcDcbz
+ppcDcbz:
+ dcbz r0,r3
+ blr
+
/*-------------------------------------------------------------------*/
/*