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183 lines
4.0 KiB
C
183 lines
4.0 KiB
C
/*
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* cpuIdent.c -- Cpu identification code
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*
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* Copyright (C) 1999 Eric Valette. valette@crf.canon.fr
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*
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* Added MPC8260 Andy Dachs <a.dachs@sstl.co.uk>
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* Surrey Satellite Technology Limited
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*
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* The license and distribution terms for this file may be
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* found in found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*
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*/
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#include <libcpu/cpuIdent.h>
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#include <libcpu/spr.h>
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#include <rtems/bspIo.h>
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/*
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* Generate inline code to read Processor Version Register
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*/
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SPR_RO(PVR)
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ppc_cpu_id_t current_ppc_cpu = PPC_UNKNOWN;
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ppc_cpu_revision_t current_ppc_revision = 0xff;
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ppc_feature_t current_ppc_features = {0};
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char *get_ppc_cpu_type_name(ppc_cpu_id_t cpu)
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{
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switch (cpu) {
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case PPC_405: return "PPC405";
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case PPC_405GP: return "PPC405GP";
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case PPC_405EX: return "PPC405EX";
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case PPC_601: return "MPC601";
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case PPC_5XX: return "MPC5XX";
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case PPC_603: return "MPC603";
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case PPC_603ev: return "MPC603ev";
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case PPC_604: return "MPC604";
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case PPC_750: return "MPC750";
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case PPC_7400: return "MPC7400";
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case PPC_7455: return "MPC7455";
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case PPC_7457: return "MPC7457";
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case PPC_603le: return "MPC603le";
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case PPC_604e: return "MPC604e";
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case PPC_604r: return "MPC604r";
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case PPC_620: return "MPC620";
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case PPC_860: return "MPC860";
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case PPC_8260: return "MPC8260";
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case PPC_8245: return "MPC8245";
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case PPC_8540: return "MPC8540";
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case PPC_PSIM: return "PSIM";
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case PPC_e200z6: return "e200z6";
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default:
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printk("Unknown CPU value of 0x%x. Please add it to "
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"<libcpu/powerpc/shared/include/cpuIdent.c>\n", cpu );
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}
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return "UNKNOWN";
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}
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ppc_cpu_id_t get_ppc_cpu_type()
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{
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unsigned int pvr;
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if ( PPC_UNKNOWN != current_ppc_cpu )
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return current_ppc_cpu;
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pvr = (_read_PVR() >> 16);
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current_ppc_cpu = (ppc_cpu_id_t) pvr;
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switch (pvr) {
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case PPC_405:
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case PPC_405GP:
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case PPC_405EX:
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case PPC_601:
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case PPC_5XX:
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case PPC_603:
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case PPC_603ev:
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case PPC_603le:
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case PPC_604:
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case PPC_604r:
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case PPC_750:
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case PPC_7400:
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case PPC_7455:
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case PPC_7457:
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case PPC_604e:
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case PPC_620:
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case PPC_860:
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case PPC_8260:
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case PPC_8245:
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case PPC_PSIM:
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case PPC_8540:
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case PPC_e200z6:
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case PPC_e300c1:
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case PPC_e300c2:
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case PPC_e300c3:
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break;
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default:
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printk("Unknown PVR value of 0x%x. Please add it to "
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"<libcpu/powerpc/shared/include/cpuIdent.c>\n", pvr );
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return PPC_UNKNOWN;
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}
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/* determine features */
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/* FIXME: This is incomplete; I couldn't go through all the
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* manuals (yet).
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*/
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switch ( current_ppc_cpu ) {
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case PPC_7455:
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case PPC_7457:
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current_ppc_features.has_8_bats = 1;
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case PPC_7400:
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current_ppc_features.has_altivec = 1;
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case PPC_604:
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case PPC_604e:
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case PPC_604r:
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case PPC_750:
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current_ppc_features.has_hw_ptbl_lkup = 1;
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case PPC_8260:
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case PPC_8245:
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case PPC_601:
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case PPC_603:
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case PPC_603e:
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case PPC_603ev:
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case PPC_603le:
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current_ppc_features.is_60x = 1;
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default:
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break;
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}
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switch ( current_ppc_cpu ) {
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case PPC_405:
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case PPC_405GP:
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case PPC_405EX:
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current_ppc_features.is_bookE = PPC_BOOKE_405;
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break;
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case PPC_8540:
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case PPC_e200z6:
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current_ppc_features.is_bookE = PPC_BOOKE_E500;
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default:
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break;
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}
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switch ( current_ppc_cpu ) {
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case PPC_860:
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current_ppc_features.has_16byte_clne = 1;
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default:
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break;
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}
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switch ( current_ppc_cpu ) {
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case PPC_603e:
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case PPC_603ev:
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case PPC_603le:
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case PPC_e300c1:
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case PPC_e300c2:
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case PPC_e300c3:
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case PPC_8240:
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current_ppc_features.has_shadowed_gprs = 1;
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default:
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break;
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}
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switch (current_ppc_cpu) {
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case PPC_e200z6:
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current_ppc_features.has_ivpr_and_ivor = 1;
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break;
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default:
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break;
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}
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return current_ppc_cpu;
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}
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ppc_cpu_revision_t get_ppc_cpu_revision()
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{
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ppc_cpu_revision_t rev = (ppc_cpu_revision_t) (_read_PVR() & 0xffff);
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current_ppc_revision = rev;
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return rev;
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}
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