| #include <sys/types.h> | |
| #include <unistd.h> | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| #include "../../util/header.h" | |
| #include "../../util/util.h" | |
| #define mfspr(rn) ({unsigned long rval; \ | |
| asm volatile("mfspr %0," __stringify(rn) \ | |
| : "=r" (rval)); rval; }) | |
| #define SPRN_PVR 0x11F /* Processor Version Register */ | |
| #define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */ | |
| #define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */ | |
| int | |
| get_cpuid(char *buffer, size_t sz) | |
| { | |
| unsigned long pvr; | |
| int nb; | |
| pvr = mfspr(SPRN_PVR); | |
| nb = scnprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr)); | |
| /* look for end marker to ensure the entire data fit */ | |
| if (strchr(buffer, '$')) { | |
| buffer[nb-1] = '\0'; | |
| return 0; | |
| } | |
| return -1; | |
| } |