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/*
* cpuIdent.c -- Cpu identification code
*
* Copyright (C) 1999 Eric Valette. valette@crf.canon.fr
*
* Added MPC8260 Andy Dachs <a.dachs@sstl.co.uk>
* Surrey Satellite Technology Limited
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*
*/
#include <libcpu/cpuIdent.h>
#include <libcpu/spr.h>
#include <rtems/bspIo.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_feature_t current_ppc_features = {0};
char *get_ppc_cpu_type_name(ppc_cpu_id_t cpu)
{
switch (cpu) {
case PPC_405: return "PPC405";
case PPC_601: return "MPC601";
case PPC_5XX: return "MPC5XX";
case PPC_603: return "MPC603";
case PPC_603ev: return "MPC603ev";
case PPC_604: return "MPC604";
case PPC_750: return "MPC750";
case PPC_7400: return "MPC7400";
case PPC_7455: return "MPC7455";
case PPC_7457: return "MPC7457";
case PPC_603le: return "MPC603le";
case PPC_604e: return "MPC604e";
case PPC_604r: return "MPC604r";
case PPC_620: return "MPC620";
case PPC_860: return "MPC860";
case PPC_8260: return "MPC8260";
case PPC_8245: return "MPC8245";
case PPC_8540: return "MPC8540";
case PPC_PSIM: return "PSIM";
case PPC_e200z6: return "e200z6";
default:
printk("Unknown CPU value of 0x%x. Please add it to "
"<libcpu/powerpc/shared/include/cpuIdent.c>\n", cpu );
}
return "UNKNOWN";
}
ppc_cpu_id_t get_ppc_cpu_type()
{
unsigned int pvr;
if ( PPC_UNKNOWN != current_ppc_cpu )
return current_ppc_cpu;
pvr = (_read_PVR() >> 16);
current_ppc_cpu = (ppc_cpu_id_t) pvr;
switch (pvr) {
case PPC_405:
case PPC_601:
case PPC_5XX:
case PPC_603:
case PPC_603ev:
case PPC_603le:
case PPC_604:
case PPC_604r:
case PPC_750:
case PPC_7400:
case PPC_7455:
case PPC_7457:
case PPC_604e:
case PPC_620:
case PPC_860:
case PPC_8260:
case PPC_8245:
case PPC_PSIM:
case PPC_8540:
case PPC_e200z6:
case PPC_e300c1:
case PPC_e300c2:
case PPC_e300c3:
break;
default:
printk("Unknown PVR value of 0x%x. Please add it to "
"<libcpu/powerpc/shared/include/cpuIdent.c>\n", pvr );
return PPC_UNKNOWN;
}
/* determine features */
/* FIXME: This is incomplete; I couldn't go through all the
* manuals (yet).
*/
switch ( current_ppc_cpu ) {
case PPC_7455:
case PPC_7457:
current_ppc_features.has_8_bats = 1;
case PPC_7400:
current_ppc_features.has_altivec = 1;
case PPC_604:
case PPC_604e:
case PPC_604r:
case PPC_750:
current_ppc_features.has_hw_ptbl_lkup = 1;
case PPC_8260:
case PPC_8245:
case PPC_601:
case PPC_603:
case PPC_603e:
case PPC_603ev:
case PPC_603le:
current_ppc_features.is_60x = 1;
default:
break;
}
switch ( current_ppc_cpu ) {
case PPC_405:
current_ppc_features.is_bookE = PPC_BOOKE_405;
break;
case PPC_8540:
case PPC_e200z6:
current_ppc_features.is_bookE = PPC_BOOKE_E500;
default:
break;
}
switch ( current_ppc_cpu ) {
case PPC_860:
current_ppc_features.has_16byte_clne = 1;
default:
break;
}
switch ( current_ppc_cpu ) {
case PPC_603e:
case PPC_603ev:
case PPC_603le:
case PPC_e300c1:
case PPC_e300c2:
case PPC_e300c3:
case PPC_8240:
current_ppc_features.has_shadowed_gprs = 1;
default:
break;
}
switch (current_ppc_cpu) {
case PPC_e200z6:
current_ppc_features.has_ivpr_and_ivor = 1;
break;
default:
break;
}
return current_ppc_cpu;
}
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;
}
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