forked from Imagelibrary/rtems
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
|
|
* 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_603:
|
|
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 of 0x%x. Please add it to <libcpu/powerpc/shared/cpu.h>\n", pvr );
|
|
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;
|
|
}
|