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/*
* (C) 2001 Dave Jones.
*
* Licensed under the terms of the GNU GPL License version 2.
*
* Bus speed parsing.
*/
#include <stdio.h>
#include "../x86info.h"
void interpret_eblcr(u32 lo)
{
const unsigned int buscode[2][4] = {
{ 6667, 13333, 10000, 0 },
{ 10000, 13333, 10000, 0 }
};
const unsigned int mult[32] = {
10, 6, 8, 0, 11, 7, 9, 0,
10, 14, 16, 12, 0, 15, 0, 13,
0, 0, 0, 0, 0, 0, 17, 0,
0, 0, 0, 0, 0, 0, 0, 0
};
int bus = (lo >> 18) & 3;
int mul = (lo >> 22) & 15;
int busclock, cpuclk;
return; /* too many bugs right now.. fix for a future release */
if (!user_is_root || !show_eblcr)
return;
/*
* FIXME:
* 766MHz Celeron. 66MHz x 11.5 Being picked up as 133x5.0
* bus:1 mul:0
*/
/* printf("bus:%x mul:%x\n", bus, mul);*/
/* The mobile pIII added bit 27.
* This is zero on other intel and on the cyrix III */
if (lo & (1 >> 27))
mul += 16;
busclock = buscode[1][bus]/100;
if (busclock == 0 || mult[mul] == 0)
printf("Unknown CPU/BUS multiplier (%d X %dMHz, %x).\n", mul, bus, lo);
cpuclk = (buscode[1][bus] * mult[mul])/200;
printf("Bus Speed (%dMHz) x Multiplier (%.1fx) = CPU speed %dMhz\n",
busclock,
(float) cpuclk/busclock,
cpuclk);
}
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