1 #include <linux/init.h>
4 #include <asm/cpufeature.h>
5 #include <asm/processor.h>
9 static void __cpuinit
early_init_centaur(struct cpuinfo_x86
*c
)
11 if (c
->x86
== 0x6 && c
->x86_model
>= 0xf)
12 set_cpu_cap(c
, X86_FEATURE_CONSTANT_TSC
);
14 set_cpu_cap(c
, X86_FEATURE_SYSENTER32
);
17 static void __cpuinit
init_centaur(struct cpuinfo_x86
*c
)
22 n
= c
->extended_cpuid_level
;
23 if (n
>= 0x80000008) {
24 unsigned eax
= cpuid_eax(0x80000008);
25 c
->x86_virt_bits
= (eax
>> 8) & 0xff;
26 c
->x86_phys_bits
= eax
& 0xff;
29 if (c
->x86
== 0x6 && c
->x86_model
>= 0xf) {
30 c
->x86_cache_alignment
= c
->x86_clflush_size
* 2;
31 set_cpu_cap(c
, X86_FEATURE_CONSTANT_TSC
);
32 set_cpu_cap(c
, X86_FEATURE_REP_GOOD
);
34 set_cpu_cap(c
, X86_FEATURE_LFENCE_RDTSC
);
37 static struct cpu_dev centaur_cpu_dev __cpuinitdata
= {
38 .c_vendor
= "Centaur",
39 .c_ident
= { "CentaurHauls" },
40 .c_early_init
= early_init_centaur
,
41 .c_init
= init_centaur
,
44 cpu_vendor_dev_register(X86_VENDOR_CENTAUR
, ¢aur_cpu_dev
);