Merge branch 'sundance'
[linux-2.6] / arch / i386 / kernel / cpu / transmeta.c
1 #include <linux/kernel.h>
2 #include <linux/init.h>
3 #include <asm/processor.h>
4 #include <asm/msr.h>
5 #include "cpu.h"
6
7 static void __init init_transmeta(struct cpuinfo_x86 *c)
8 {
9         unsigned int cap_mask, uk, max, dummy;
10         unsigned int cms_rev1, cms_rev2;
11         unsigned int cpu_rev, cpu_freq, cpu_flags, new_cpu_rev;
12         char cpu_info[65];
13
14         get_model_name(c);      /* Same as AMD/Cyrix */
15         display_cacheinfo(c);
16
17         /* Print CMS and CPU revision */
18         max = cpuid_eax(0x80860000);
19         cpu_rev = 0;
20         if ( max >= 0x80860001 ) {
21                 cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags); 
22                 if (cpu_rev != 0x02000000) {
23                         printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
24                                 (cpu_rev >> 24) & 0xff,
25                                 (cpu_rev >> 16) & 0xff,
26                                 (cpu_rev >> 8) & 0xff,
27                                 cpu_rev & 0xff,
28                                 cpu_freq);
29                 }
30         }
31         if ( max >= 0x80860002 ) {
32                 cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy);
33                 if (cpu_rev == 0x02000000) {
34                         printk(KERN_INFO "CPU: Processor revision %08X, %u MHz\n",
35                                 new_cpu_rev, cpu_freq);
36                 }
37                 printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
38                        (cms_rev1 >> 24) & 0xff,
39                        (cms_rev1 >> 16) & 0xff,
40                        (cms_rev1 >> 8) & 0xff,
41                        cms_rev1 & 0xff,
42                        cms_rev2);
43         }
44         if ( max >= 0x80860006 ) {
45                 cpuid(0x80860003,
46                       (void *)&cpu_info[0],
47                       (void *)&cpu_info[4],
48                       (void *)&cpu_info[8],
49                       (void *)&cpu_info[12]);
50                 cpuid(0x80860004,
51                       (void *)&cpu_info[16],
52                       (void *)&cpu_info[20],
53                       (void *)&cpu_info[24],
54                       (void *)&cpu_info[28]);
55                 cpuid(0x80860005,
56                       (void *)&cpu_info[32],
57                       (void *)&cpu_info[36],
58                       (void *)&cpu_info[40],
59                       (void *)&cpu_info[44]);
60                 cpuid(0x80860006,
61                       (void *)&cpu_info[48],
62                       (void *)&cpu_info[52],
63                       (void *)&cpu_info[56],
64                       (void *)&cpu_info[60]);
65                 cpu_info[64] = '\0';
66                 printk(KERN_INFO "CPU: %s\n", cpu_info);
67         }
68
69         /* Unhide possibly hidden capability flags */
70         rdmsr(0x80860004, cap_mask, uk);
71         wrmsr(0x80860004, ~0, uk);
72         c->x86_capability[0] = cpuid_edx(0x00000001);
73         wrmsr(0x80860004, cap_mask, uk);
74         
75         /* If we can run i686 user-space code, call us an i686 */
76 #define USER686 (X86_FEATURE_TSC|X86_FEATURE_CX8|X86_FEATURE_CMOV)
77         if ( c->x86 == 5 && (c->x86_capability[0] & USER686) == USER686 )
78                 c->x86 = 6;
79
80 #ifdef CONFIG_SYSCTL
81         /* randomize_va_space slows us down enormously;
82            it probably triggers retranslation of x86->native bytecode */
83         randomize_va_space = 0;
84 #endif
85 }
86
87 static void __init transmeta_identify(struct cpuinfo_x86 * c)
88 {
89         u32 xlvl;
90         generic_identify(c);
91
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);
97         }
98 }
99
100 static struct cpu_dev transmeta_cpu_dev __initdata = {
101         .c_vendor       = "Transmeta",
102         .c_ident        = { "GenuineTMx86", "TransmetaCPU" },
103         .c_init         = init_transmeta,
104         .c_identify     = transmeta_identify,
105 };
106
107 int __init transmeta_init_cpu(void)
108 {
109         cpu_devs[X86_VENDOR_TRANSMETA] = &transmeta_cpu_dev;
110         return 0;
111 }
112
113 //early_arch_initcall(transmeta_init_cpu);
114
115 static int __init transmeta_exit_cpu(void)
116 {
117         cpu_devs[X86_VENDOR_TRANSMETA] = NULL;
118         return 0;
119 }
120
121 late_initcall(transmeta_exit_cpu);