Patch from John Cotton <john.cotton@nrc.ca>, Charles-Antoine Gauthier

<charles.gauthier@iit.nrc.ca>, and Darlene A. Stewart
<Darlene.Stewart@nrc.ca> to add support for a number of very
significant things:

  + BSPs for many variations on the Motorola MBX8xx board series
  + Cache Manager including initial support for m68040
    and PowerPC
  + Rework of mpc8xx libcpu code so all mpc8xx CPUs now use
    same code base.
  + Rework of eth_comm BSP to utiltize above.

John reports this works on the 821 and 860

1 files changed, 49 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/powerpc/mpc8xx/include/mmu.h b/c/src/lib/libcpu/powerpc/mpc8xx/include/mmu.h
new file mode 100644
index 0000000000..7370e0cf5a
--- /dev/null
+++ b/c/src/lib/libcpu/powerpc/mpc8xx/include/mmu.h
@@ -0,0 +1,49 @@
+/* 
+ * mmu.h
+ * 
+ * This include file contains definitions pertaining 
+ * to the MMU on the MPC8xx.
+ *
+ * Copyright (c) 1999, National Research Council of Canada
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.OARcorp.com/rtems/license.html.
+ */
+
+#ifndef __M8xx_MMU_h
+#define __M8xx_MMU_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <bsp.h>
+
+/*
+ * The MMU_TLB_table is used to statically initialize the Table Lookaside
+ * Buffers in the MMU of an MPC8xx.
+ */
+typedef struct {
+  unsigned32	mmu_epn;	/* Effective Page Number */
+  unsigned32	mmu_twc;	/* Tablewalk Control Register */
+  unsigned32	mmu_rpn;	/* Real Page Number */
+} MMU_TLB_table_t;
+
+/*
+ * The MMU_TLB_table and its size, MMU_N_TLB_Table_Entries, must be 
+ * supplied by the BSP.
+ */
+extern MMU_TLB_table_t MMU_TLB_table[];	/* MMU TLB table supplied by BSP */
+extern int MMU_N_TLB_Table_Entries;	/* Number of entries in MMU TLB table */
+
+/* Functions */
+
+void mmu_init( void );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */