Merged of mcp750 and mvme2307 BSP by Eric Valette <valette@crf.canon.fr>.

As part of this effort, the mpc750 libcpu code is now shared with the
ppc6xx.

c/src/lib/libcpu/powerpc/shared/cpuIdent.c

@@ -0,0 +1,53 @@
+/*
+ *  cpuIdent.c -- Cpu identification code
+ *
+ *  Copyright (C) 1999 Eric Valette. valette@crf.canon.fr
+ *
+ *  The license and distribution terms for this file may be
+ *  found in found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ *
+ */
+
+#include <libcpu/spr.h>
+
+/*
+ * Generate inline code to read Processor Version Register
+ */
+SPR_RO(PVR)
+
+ppc_cpu_id_t current_ppc_cpu = PPC_UNKNOWN;
+ppc_cpu_revision_t current_ppc_revision = 0xff;
+
+ppc_cpu_id_t get_ppc_cpu_type()
+{
+  unsigned int pvr = (_read_PVR() >> 16) ;
+
+  current_ppc_cpu = (ppc_cpu_id_t) pvr;
+  switch (pvr) {
+  case PPC_601	:
+  case PPC_603	:
+  case PPC_604	:
+  case PPC_603e	:
+  case PPC_603ev:
+  case PPC_750	:
+  case PPC_604e	:
+  case PPC_604r :
+  case PPC_620	:
+  case PPC_860	:
+    current_ppc_cpu = (ppc_cpu_id_t) pvr;
+    return current_ppc_cpu;
+  default :
+    printk("Unknown PVR value. Please add it to <libcpu/powerpc/shared/cpu.h> \n");
+    return PPC_UNKNOWN;
+  }
+  
+}
+ppc_cpu_revision_t get_ppc_cpu_revision()
+{
+  ppc_cpu_revision_t rev = (ppc_cpu_revision_t) (_read_PVR() & 0xffff);
+  current_ppc_revision = rev;
+  return rev;
+}