1 #include <linux/kernel.h>
3 #include <linux/init.h>
4 #include <asm/processor.h>
8 static void __cpuinit
init_transmeta(struct cpuinfo_x86
*c
)
10 unsigned int cap_mask
, uk
, max
, dummy
;
11 unsigned int cms_rev1
, cms_rev2
;
12 unsigned int cpu_rev
, cpu_freq
= 0, cpu_flags
, new_cpu_rev
;
15 get_model_name(c
); /* Same as AMD/Cyrix */
18 /* Print CMS and CPU revision */
19 max
= cpuid_eax(0x80860000);
21 if (max
>= 0x80860001) {
22 cpuid(0x80860001, &dummy
, &cpu_rev
, &cpu_freq
, &cpu_flags
);
23 if (cpu_rev
!= 0x02000000) {
24 printk(KERN_INFO
"CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
25 (cpu_rev
>> 24) & 0xff,
26 (cpu_rev
>> 16) & 0xff,
27 (cpu_rev
>> 8) & 0xff,
32 if (max
>= 0x80860002) {
33 cpuid(0x80860002, &new_cpu_rev
, &cms_rev1
, &cms_rev2
, &dummy
);
34 if (cpu_rev
== 0x02000000) {
35 printk(KERN_INFO
"CPU: Processor revision %08X, %u MHz\n",
36 new_cpu_rev
, cpu_freq
);
38 printk(KERN_INFO
"CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
39 (cms_rev1
>> 24) & 0xff,
40 (cms_rev1
>> 16) & 0xff,
41 (cms_rev1
>> 8) & 0xff,
45 if (max
>= 0x80860006) {
50 (void *)&cpu_info
[12]);
52 (void *)&cpu_info
[16],
53 (void *)&cpu_info
[20],
54 (void *)&cpu_info
[24],
55 (void *)&cpu_info
[28]);
57 (void *)&cpu_info
[32],
58 (void *)&cpu_info
[36],
59 (void *)&cpu_info
[40],
60 (void *)&cpu_info
[44]);
62 (void *)&cpu_info
[48],
63 (void *)&cpu_info
[52],
64 (void *)&cpu_info
[56],
65 (void *)&cpu_info
[60]);
67 printk(KERN_INFO
"CPU: %s\n", cpu_info
);
70 /* Unhide possibly hidden capability flags */
71 rdmsr(0x80860004, cap_mask
, uk
);
72 wrmsr(0x80860004, ~0, uk
);
73 c
->x86_capability
[0] = cpuid_edx(0x00000001);
74 wrmsr(0x80860004, cap_mask
, uk
);
76 /* All Transmeta CPUs have a constant TSC */
77 set_cpu_cap(c
, X86_FEATURE_CONSTANT_TSC
);
81 * randomize_va_space slows us down enormously;
82 * it probably triggers retranslation of x86->native bytecode
84 randomize_va_space
= 0;
88 static void __cpuinit
transmeta_identify(struct cpuinfo_x86
*c
)
92 /* Transmeta-defined flags: level 0x80860001 */
93 xlvl
= cpuid_eax(0x80860000);
94 if ((xlvl
& 0xffff0000) == 0x80860000) {
95 if (xlvl
>= 0x80860001)
96 c
->x86_capability
[2] = cpuid_edx(0x80860001);
100 static struct cpu_dev transmeta_cpu_dev __cpuinitdata
= {
101 .c_vendor
= "Transmeta",
102 .c_ident
= { "GenuineTMx86", "TransmetaCPU" },
103 .c_init
= init_transmeta
,
104 .c_identify
= transmeta_identify
,
105 .c_x86_vendor
= X86_VENDOR_TRANSMETA
,
108 cpu_dev_register(transmeta_cpu_dev
);