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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libcpu/] [i386/] [displayCpu.c] - Blame information for rev 507

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Line No. Rev Author Line
1 30 unneback 
/*  displayCpu.c
2 
 *
3 
 *  This file contains code for displaying the Intel Cpu identification
4 
 *  that has been performed by checkCPUtypeSetCr0 function.
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 *
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 *  COPYRIGHT (c) 1998 valette@crf.canon.fr
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: displayCpu.c,v 1.2 2001-09-27 12:01:22 chris Exp $
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 */
14 
 
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/*
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 * Tell us the machine setup..
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 */
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#include <stdio.h>
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#include <libcpu/cpu.h>
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#include <string.h>
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#include <libcpu/cpuModel.h>
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#include <bspIo.h>
23 
 
24 
unsigned char Cx86_step = 0;
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static const char *Cx86_type[] = {
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        "unknown", "1.3", "1.4", "1.5", "1.6", "2.4", "2.5", "2.6", "2.7 or 3.7", "4.2"
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        };
28 
 
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static const char * i486model(unsigned int nr)
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{
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        static const char *model[] = {
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                "0","DX","SX","DX/2","4","SX/2","6","DX/2-WB","DX/4","DX/4-WB",
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                "10","11","12","13","Am5x86-WT","Am5x86-WB"
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        };
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        if (nr < sizeof(model)/sizeof(char *))
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                return model[nr];
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        return NULL;
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}
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static const char * i586model(unsigned int nr)
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{
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        static const char *model[] = {
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                "0", "Pentium 60/66","Pentium 75+","OverDrive PODP5V83",
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                "Pentium MMX", NULL, NULL, "Mobile Pentium 75+",
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                "Mobile Pentium MMX"
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        };
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        if (nr < sizeof(model)/sizeof(char *))
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                return model[nr];
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        return NULL;
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}
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static const char * Cx86model(void)
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{
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        unsigned char nr6x86 = 0;
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        static const char *model[] = {
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                "unknown", "6x86", "6x86L", "6x86MX", "MII"
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        };
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        switch (x86) {
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                case 5:
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                        nr6x86 = ((x86_capability & (1 << 8)) ? 2 : 1); /* cx8 flag only on 6x86L */
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                        break;
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                case 6:
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                        nr6x86 = 3;
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                        break;
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                default:
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                        nr6x86 = 0;
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        }
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        /* We must get the stepping number by reading DIR1 */
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        outport_byte(0x22,0xff);
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        inport_byte(0x23, x86_mask);
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        switch (x86_mask) {
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                case 0x03:
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                        Cx86_step =  1; /* 6x86MX Rev 1.3 */
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                        break;
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                case 0x04:
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                        Cx86_step =  2; /* 6x86MX Rev 1.4 */
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                        break;
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                case 0x05:
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                        Cx86_step =  3; /* 6x86MX Rev 1.5 */
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                        break;
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                case 0x06:
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                        Cx86_step =  4; /* 6x86MX Rev 1.6 */
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                        break;
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                case 0x14:
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                        Cx86_step =  5; /* 6x86 Rev 2.4 */
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                        break;
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                case 0x15:
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                        Cx86_step =  6; /* 6x86 Rev 2.5 */
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                        break;
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                case 0x16:
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                        Cx86_step =  7; /* 6x86 Rev 2.6 */
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                        break;
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                case 0x17:
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                        Cx86_step =  8; /* 6x86 Rev 2.7 or 3.7 */
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                        break;
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                case 0x22:
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                        Cx86_step =  9; /* 6x86L Rev 4.2 */
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                        break;
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                default:
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                        Cx86_step = 0;
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        }
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        return model[nr6x86];
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}
105 
 
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static const char * i686model(unsigned int nr)
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{
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        static const char *model[] = {
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                "PPro A-step", "Pentium Pro"
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        };
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        if (nr < sizeof(model)/sizeof(char *))
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                return model[nr];
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        return NULL;
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}
115 
 
116 
struct cpu_model_info {
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        int x86;
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        char *model_names[16];
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};
120 
 
121 
static struct cpu_model_info amd_models[] = {
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        { 4,
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          { NULL, NULL, NULL, "DX/2", NULL, NULL, NULL, "DX/2-WB", "DX/4",
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            "DX/4-WB", NULL, NULL, NULL, NULL, "Am5x86-WT", "Am5x86-WB" }},
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        { 5,
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          { "K5/SSA5 (PR-75, PR-90, PR-100)", "K5 (PR-120, PR-133)",
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            "K5 (PR-166)", "K5 (PR-200)", NULL, NULL,
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            "K6 (166 - 266)", "K6 (166 - 300)", "K6-2 (200 - 450)",
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            "K6-3D-Plus (200 - 450)", NULL, NULL, NULL, NULL, NULL, NULL }},
130 
};
131 
 
132 
static const char * AMDmodel(void)
133 
{
134 
        const char *p=NULL;
135 
        int i;
136 
 
137 
        if (x86_model < 16)
138 
                for (i=0; i<sizeof(amd_models)/sizeof(struct cpu_model_info); i++)
139 
                        if (amd_models[i].x86 == x86) {
140 
                                p = amd_models[i].model_names[(int)x86_model];
141 
                                break;
142 
                        }
143 
        return p;
144 
}
145 
 
146 
static const char * getmodel(int x86, int model)
147 
{
148 
        const char *p = NULL;
149 
        static char nbuf[12];
150 
        if (strncmp(x86_vendor_id, "Cyrix", 5) == 0)
151 
                p = Cx86model();
152 
        else if(strcmp(x86_vendor_id, "AuthenticAMD")==0)
153 
                p = AMDmodel();
154 
        else {
155 
                switch (x86) {
156 
                        case 4:
157 
                                p = i486model(model);
158 
                                break;
159 
                        case 5:
160 
                                p = i586model(model);
161 
                                break;
162 
                        case 6:
163 
                                p = i686model(model);
164 
                                break;
165 
                }
166 
        }
167 
        if (p)
168 
                return p;
169 
 
170 
        sprintf(nbuf, "%d", model);
171 
        return nbuf;
172 
}
173 
 
174 
void printCpuInfo()
175 
{
176 
  int i;
177 
  static const char *x86_cap_flags[] = {
178 
    "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
179 
    "cx8", "apic", "10", "11", "mtrr", "pge", "mca", "cmov",
180 
    "16", "17", "18", "19", "20", "21", "22", "mmx",
181 
    "24", "25", "26", "27", "28", "29", "30", "31"
182 
  };
183 
 
184 
  printk("cpu\t\t\t: %c86\n", x86+'0');
185 
  printk("model\t\t: %s\n",
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         have_cpuid ? getmodel(x86, x86_model) : "unknown");
187 
  if (x86_vendor_id [0] == '\0')
188 
    strcpy(x86_vendor_id, "unknown");
189 
  printk("vendor_id\t: %s\n", x86_vendor_id);
190 
 
191 
  if (x86_mask)
192 
    if (strncmp(x86_vendor_id, "Cyrix", 5) != 0) {
193 
      printk("stepping\t: %d\n", x86_mask);
194 
    }
195 
    else {                      /* we have a Cyrix */
196 
      printk("stepping\t: %s\n", Cx86_type[Cx86_step]);
197 
    }
198 
  else
199 
    printk("stepping\t: unknown\n");
200 
 
201 
  printk("fpu\t\t\t: %s\n", (hard_math ? "yes" : "no"));
202 
  printk("cpuid\t\t: %s\n", (have_cpuid ? "yes" : "no"));
203 
  printk("flags\t\t:");
204 
  for ( i = 0 ; i < 32 ; i++ ) {
205 
    if ( x86_capability & (1 << i) ) {
206 
      printk(" %s", x86_cap_flags[i]);
207 
    }
208 
  }
209 
  printk("\n");
210 
}

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