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;
}