Initial revision

1 files changed, 58 insertions, 0 deletions

diff --git a/cpu/mpc824x/drivers/epic/epicutil.S b/cpu/mpc824x/drivers/epic/epicutil.S
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+++ b/cpu/mpc824x/drivers/epic/epicutil.S
@@ -0,0 +1,58 @@
+/**************************************
+ *
+ * copyright @ Motorola, 1999
+ *
+ *
+ * This file contains two commonly used
+ * lower level utility routines.
+ *
+ * The utility routines are also in other
+ * Kahlua device driver libraries. The
+ * need to be linked in only once.
+ **************************************/
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+/**********************************************************
+ * function: load_runtime_reg
+ *
+ * input:  r3 - value of eumbbar
+ *         r4 - register offset in embedded utility space
+ *
+ * output: r3 - register content
+ **********************************************************/
+      .text
+      .align 2
+      .global load_runtime_reg
+
+load_runtime_reg:
+
+		  xor r5,r5,r5
+          or  r5,r5,r3       /* save eumbbar */
+
+	      lwbrx	r3,r4,r5
+	      sync
+
+ 	      bclr 20, 0
+
+/****************************************************************
+ * function: store_runtime_reg
+ *
+ * input: r3 - value of eumbbar
+ *        r4 - register offset in embedded utility space
+ *        r5 - new value to be stored
+ *
+ ****************************************************************/
+           .text
+           .align 2
+           .global store_runtime_reg
+store_runtime_reg:
+
+		  xor r0,r0,r0
+
+	      stwbrx r5,  r4, r3
+	      sync
+
+		  bclr   20,0
+