HelenOS sources

root/kernel/arch/mips32/src/cpu/cpu.c

DEFINITIONS

1. cpu_arch_init
2. cpu_identify
3. cpu_print_report

/*
 * Copyright (c) 2003-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup kernel_mips32
 * @{
 */
/** @file
 */

#include <arch/cpu.h>
#include <cpu.h>
#include <arch.h>
#include <arch/cp0.h>
#include <stdio.h>

struct data_t {
        const char *vendor;
        const char *model;
};

static struct data_t imp_data[] = {
        { "Invalid", "Invalid" },       /* 0x00 */
        { "MIPS", "R2000" },            /* 0x01 */
        { "MIPS", "R3000" },            /* 0x02 */
        { "MIPS", "R6000" },            /* 0x03 */
        { "MIPS", "R4000/R4400" },      /* 0x04 */
        { "LSI Logic", "R3000" },       /* 0x05 */
        { "MIPS", "R6000A" },           /* 0x06 */
        { "IDT", "3051/3052" },         /* 0x07 */
        { "Invalid", "Invalid" },       /* 0x08 */
        { "MIPS", "R10000/T5" },        /* 0x09 */
        { "MIPS", "R4200" },            /* 0x0a */
        { "Unknown", "Unknown" },       /* 0x0b */
        { "Unknown", "Unknown" },       /* 0x0c */
        { "Invalid", "Invalid" },       /* 0x0d */
        { "Invalid", "Invalid" },       /* 0x0e */
        { "Invalid", "Invalid" },       /* 0x0f */
        { "MIPS", "R8000" },            /* 0x10 */
        { "Invalid", "Invalid" },       /* 0x11 */
        { "Invalid", "Invalid" },       /* 0x12 */
        { "Invalid", "Invalid" },       /* 0x13 */
        { "Invalid", "Invalid" },       /* 0x14 */
        { "Invalid", "Invalid" },       /* 0x15 */
        { "Invalid", "Invalid" },       /* 0x16 */
        { "Invalid", "Invalid" },       /* 0x17 */
        { "Invalid", "Invalid" },       /* 0x18 */
        { "Invalid", "Invalid" },       /* 0x19 */
        { "Invalid", "Invalid" },       /* 0x1a */
        { "Invalid", "Invalid" },       /* 0x1b */
        { "Invalid", "Invalid" },       /* 0x1c */
        { "Invalid", "Invalid" },       /* 0x1d */
        { "Invalid", "Invalid" },       /* 0x1e */
        { "Invalid", "Invalid" },       /* 0x1f */
        { "QED", "R4600" },             /* 0x20 */
        { "Sony", "R3000" },            /* 0x21 */
        { "Toshiba", "R3000" },         /* 0x22 */
        { "NKK", "R3000" },             /* 0x23 */
        { NULL, NULL }
};

static struct data_t imp_data80[] = {
        { "MIPS", "4Kc" },  /* 0x80 */
        { "Invalid", "Invalid" }, /* 0x81 */
        { "Invalid", "Invalid" }, /* 0x82 */
        { "MIPS", "4Km & 4Kp" }, /* 0x83 */
        { NULL, NULL }
};

void cpu_arch_init(void)
{
}

void cpu_identify(void)
{
        CPU->arch.rev_num = cp0_prid_read() & 0xff;
        CPU->arch.imp_num = (cp0_prid_read() >> 8) & 0xff;
}

void cpu_print_report(cpu_t *m)
{
        struct data_t *data;
        unsigned int i;

        if (m->arch.imp_num & 0x80) {
                /* Count records */
                i = 0;
                while (imp_data80[i].vendor)
                        i++;
                if ((m->arch.imp_num & 0x7f) >= i) {
                        printf("imp=%d\n", m->arch.imp_num);
                        return;
                }
                data = &imp_data80[m->arch.imp_num & 0x7f];
        } else {
                i = 0;
                while (imp_data[i].vendor)
                        i++;
                if (m->arch.imp_num >= i) {
                        printf("imp=%d\n", m->arch.imp_num);
                        return;
                }
                data = &imp_data[m->arch.imp_num];
        }

        printf("cpu%u: %s %s (rev=%d.%d, imp=%d)\n",
            m->id, data->vendor, data->model, m->arch.rev_num >> 4,
            m->arch.rev_num & 0x0f, m->arch.imp_num);
}

/** @}
 */