xref: /openbmc/linux/arch/x86/lib/cpu.c (revision 5b394b2d)
1 #include <linux/types.h>
2 #include <linux/export.h>
3 
4 unsigned int x86_family(unsigned int sig)
5 {
6 	unsigned int x86;
7 
8 	x86 = (sig >> 8) & 0xf;
9 
10 	if (x86 == 0xf)
11 		x86 += (sig >> 20) & 0xff;
12 
13 	return x86;
14 }
15 EXPORT_SYMBOL_GPL(x86_family);
16 
17 unsigned int x86_model(unsigned int sig)
18 {
19 	unsigned int fam, model;
20 
21 	fam = x86_family(sig);
22 
23 	model = (sig >> 4) & 0xf;
24 
25 	if (fam >= 0x6)
26 		model += ((sig >> 16) & 0xf) << 4;
27 
28 	return model;
29 }
30 EXPORT_SYMBOL_GPL(x86_model);
31 
32 unsigned int x86_stepping(unsigned int sig)
33 {
34 	return sig & 0xf;
35 }
36 EXPORT_SYMBOL_GPL(x86_stepping);
37