Subversion Repositories openrisc_2011-10-31

/*

 *  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: cpuIdent.c,v 1.2 2001-09-27 12:01:30 chris Exp $

 *

 */

#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;

}