7 #include "../../util/header.h"
9 #define __stringify_1(x) #x
10 #define __stringify(x) __stringify_1(x)
12 #define mfspr(rn) ({unsigned long rval; \
13 asm volatile("mfspr %0," __stringify(rn) \
14 : "=r" (rval)); rval; })
16 #define SPRN_PVR 0x11F /* Processor Version Register */
17 #define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */
18 #define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */
21 get_cpuid(char *buffer, size_t sz)
26 pvr = mfspr(SPRN_PVR);
28 nb = snprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));
30 /* look for end marker to ensure the entire data fit */
31 if (strchr(buffer, '$')) {