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|
/*
* CPU detetion based on DMI decode rev 1.2
*
* (C) 2003 Nicolas Planel <nplanel@mandrakesoft.com>
*
* Licensed under the GNU Public license. If you want to use it in with
* another license just ask.
*/
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
static void
dump_raw_data(void *data, unsigned int length)
{
unsigned char buffer1[80], buffer2[80], *b1, *b2, c;
unsigned char *p = data;
unsigned long column=0;
unsigned int length_printed = 0;
const unsigned char maxcolumn = 16;
while (length_printed < length) {
b1 = buffer1;
b2 = buffer2;
for (column = 0;
column < maxcolumn && length_printed < length;
column ++) {
b1 += sprintf(b1, "%02x ",(unsigned int) *p);
if (*p < 32 || *p > 126) c = '.';
else c = *p;
b2 += sprintf(b2, "%c", c);
p++;
length_printed++;
}
/* pad out the line */
for (; column < maxcolumn; column++)
{
b1 += sprintf(b1, " ");
b2 += sprintf(b2, " ");
}
printf("%s\t%s\n", buffer1, buffer2);
}
}
struct dmi_header
{
u8 type;
u8 length;
u16 handle;
};
static char *dmi_string(struct dmi_header *dm, u8 s)
{
u8 *bp=(u8 *)dm;
if (!s) return "";
bp+=dm->length;
while(s>1)
{
bp+=strlen(bp);
bp++;
s--;
}
return bp;
}
static char *dmi_processor_type(u8 code)
{
static char *processor_type[]={
"",
"Other",
"Unknown",
"Central Processor",
"Math Processor",
"DSP Processor",
"Video Processor"
};
if(code == 0xFF)
return "Other";
if (code > 0xA1)
return "";
return processor_type[code];
}
static char *dmi_processor_family(u8 code)
{
static char *processor_family[]={
"",
"Other",
"Unknown",
"8086",
"80286",
"Intel386 processor",
"Intel486 processor",
"8087",
"80287",
"80387",
"80487",
"Pentium processor Family",
"Pentium Pro processor",
"Pentium II processor",
"Pentium processor with MMX technology",
"Celeron processor",
"Pentium II Xeon processor",
"Pentium III processor",
"M1 Family",
"M1","M1","M1","M1","M1","M1", /* 13h - 18h */
"K5 Family",
"K5","K5","K5","K5","K5","K5", /* 1Ah - 1Fh */
"Power PC Family",
"Power PC 601",
"Power PC 603",
"Power PC 603+",
"Power PC 604",
};
if(code == 0xFF)
return "Other";
if (code > 0x24)
return "";
return processor_family[code];
}
static int dmi_table(int fd, u32 base, int len, int num)
{
char *buf=malloc(len);
struct dmi_header *dm;
u8 *data;
int i=0;
int processor=0;
if(lseek(fd, (long)base, 0)==-1)
{
perror("dmi: lseek");
return;
}
if(read(fd, buf, len)!=len)
{
perror("dmi: read");
return;
}
data = buf;
while(i<num)
{
u32 u;
u32 u2;
dm=(struct dmi_header *)data;
if((dm->type == 4) && /*"Central Processor"*/(data[5] == 3)) {
if(/*Processor Manufacturer*/data[7] != 0)
processor++;
}
data+=dm->length;
while(*data || data[1])
data++;
data+=2;
i++;
}
free(buf);
return processor;
}
int intelDetectSMP(void) {
unsigned char buf[20];
int fd=open("/dev/mem", O_RDONLY);
long fp=0xE0000L;
int processor=0;
if(fd==-1)
{
perror("/dev/mem");
exit(1);
}
if(lseek(fd,fp,0)==-1)
{
perror("seek");
exit(1);
}
fp -= 16;
while( fp < 0xFFFFF)
{
fp+=16;
if(read(fd, buf, 16)!=16)
perror("read");
if(memcmp(buf, "_DMI_", 5)==0)
{
u16 num=buf[13]<<8|buf[12];
u16 len=buf[7]<<8|buf[6];
u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];
processor=dmi_table(fd, base,len, num);
break;
}
}
close(fd);
return (processor > 1);
}
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