6 #include <linux/stringify.h>
10 #define mfspr(rn) ({unsigned long rval; \
11 asm volatile("mfspr %0," __stringify(rn) \
12 : "=r" (rval)); rval; })
14 #define SPRN_PVR 0x11F /* Processor Version Register */
15 #define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */
16 #define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */
19 get_cpuid(char *buffer, size_t sz)
24 pvr = mfspr(SPRN_PVR);
26 nb = scnprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));
28 /* look for end marker to ensure the entire data fit */
29 if (strchr(buffer, '$')) {
41 if (asprintf(&bufp, "%.8lx", mfspr(SPRN_PVR)) < 0)