1e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <sys/types.h> 2e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <unistd.h> 3e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <stdio.h> 4e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <stdlib.h> 5e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <string.h> 6e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 7e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "../../util/header.h" 8e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 9e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengstatic inline void 10e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengcpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c, 11e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned int *d) 12e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 13e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng __asm__ __volatile__ (".byte 0x53\n\tcpuid\n\t" 14e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng "movl %%ebx, %%esi\n\t.byte 0x5b" 15e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng : "=a" (*a), 16e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng "=S" (*b), 17e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng "=c" (*c), 18e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng "=d" (*d) 19e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng : "a" (op)); 20e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 21e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 22e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengint 23e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengget_cpuid(char *buffer, size_t sz) 24e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 25e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned int a, b, c, d, lvl; 26e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng int family = -1, model = -1, step = -1; 27e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng int nb; 28e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng char vendor[16]; 29e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 30e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng cpuid(0, &lvl, &b, &c, &d); 31e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng strncpy(&vendor[0], (char *)(&b), 4); 32e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng strncpy(&vendor[4], (char *)(&d), 4); 33e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng strncpy(&vendor[8], (char *)(&c), 4); 34e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng vendor[12] = '\0'; 35e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 36e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (lvl >= 1) { 37e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng cpuid(1, &a, &b, &c, &d); 38e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 39e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng family = (a >> 8) & 0xf; /* bits 11 - 8 */ 40e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng model = (a >> 4) & 0xf; /* Bits 7 - 4 */ 41e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng step = a & 0xf; 42e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 43e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* extended family */ 44e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (family == 0xf) 45e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng family += (a >> 20) & 0xff; 46e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 47e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* extended model */ 48e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (family >= 0x6) 49e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng model += ((a >> 16) & 0xf) << 4; 50e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 51e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng nb = scnprintf(buffer, sz, "%s,%u,%u,%u$", vendor, family, model, step); 52e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 53e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* look for end marker to ensure the entire data fit */ 54e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (strchr(buffer, '$')) { 55e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng buffer[nb-1] = '\0'; 56e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return 0; 57e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 58e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return -1; 59e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 60