1 #include <linux/kernel.h>
2 #include <linux/init.h>
3 #include <asm/processor.h>
7 static void __init init_transmeta(struct cpuinfo_x86 *c)
9 unsigned int cap_mask, uk, max, dummy;
10 unsigned int cms_rev1, cms_rev2;
11 unsigned int cpu_rev, cpu_freq, cpu_flags;
14 get_model_name(c); /* Same as AMD/Cyrix */
17 /* Print CMS and CPU revision */
18 max = cpuid_eax(0x80860000);
19 if ( max >= 0x80860001 ) {
20 cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags);
21 printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
22 (cpu_rev >> 24) & 0xff,
23 (cpu_rev >> 16) & 0xff,
24 (cpu_rev >> 8) & 0xff,
28 if ( max >= 0x80860002 ) {
29 cpuid(0x80860002, &dummy, &cms_rev1, &cms_rev2, &dummy);
30 printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
31 (cms_rev1 >> 24) & 0xff,
32 (cms_rev1 >> 16) & 0xff,
33 (cms_rev1 >> 8) & 0xff,
37 if ( max >= 0x80860006 ) {
42 (void *)&cpu_info[12]);
44 (void *)&cpu_info[16],
45 (void *)&cpu_info[20],
46 (void *)&cpu_info[24],
47 (void *)&cpu_info[28]);
49 (void *)&cpu_info[32],
50 (void *)&cpu_info[36],
51 (void *)&cpu_info[40],
52 (void *)&cpu_info[44]);
54 (void *)&cpu_info[48],
55 (void *)&cpu_info[52],
56 (void *)&cpu_info[56],
57 (void *)&cpu_info[60]);
59 printk(KERN_INFO "CPU: %s\n", cpu_info);
62 /* Unhide possibly hidden capability flags */
63 rdmsr(0x80860004, cap_mask, uk);
64 wrmsr(0x80860004, ~0, uk);
65 c->x86_capability[0] = cpuid_edx(0x00000001);
66 wrmsr(0x80860004, cap_mask, uk);
68 /* If we can run i686 user-space code, call us an i686 */
69 #define USER686 (X86_FEATURE_TSC|X86_FEATURE_CX8|X86_FEATURE_CMOV)
70 if ( c->x86 == 5 && (c->x86_capability[0] & USER686) == USER686 )
74 static void transmeta_identify(struct cpuinfo_x86 * c)
79 /* Transmeta-defined flags: level 0x80860001 */
80 xlvl = cpuid_eax(0x80860000);
81 if ( (xlvl & 0xffff0000) == 0x80860000 ) {
82 if ( xlvl >= 0x80860001 )
83 c->x86_capability[2] = cpuid_edx(0x80860001);
87 static struct cpu_dev transmeta_cpu_dev __initdata = {
88 .c_vendor = "Transmeta",
89 .c_ident = { "GenuineTMx86", "TransmetaCPU" },
90 .c_init = init_transmeta,
91 .c_identify = transmeta_identify,
94 int __init transmeta_init_cpu(void)
96 cpu_devs[X86_VENDOR_TRANSMETA] = &transmeta_cpu_dev;
100 //early_arch_initcall(transmeta_init_cpu);