blob: 3fa0e5ad86b4456168acc1efc210130303308256 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/kernel.h>
Andi Kleena62eaf12006-02-16 23:41:58 +01002#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07003#include <asm/processor.h>
4#include <asm/msr.h>
5#include "cpu.h"
6
Paul Gortmaker148f9bb2013-06-18 18:23:59 -04007static void early_init_transmeta(struct cpuinfo_x86 *c)
Yinghai Luafae8652008-09-14 02:33:16 -07008{
9 u32 xlvl;
10
11 /* Transmeta-defined flags: level 0x80860001 */
12 xlvl = cpuid_eax(0x80860000);
13 if ((xlvl & 0xffff0000) == 0x80860000) {
14 if (xlvl >= 0x80860001)
15 c->x86_capability[2] = cpuid_edx(0x80860001);
16 }
17}
18
Paul Gortmaker148f9bb2013-06-18 18:23:59 -040019static void init_transmeta(struct cpuinfo_x86 *c)
Linus Torvalds1da177e2005-04-16 15:20:36 -070020{
21 unsigned int cap_mask, uk, max, dummy;
22 unsigned int cms_rev1, cms_rev2;
Andi Kleen7de6d362007-02-13 13:26:25 +010023 unsigned int cpu_rev, cpu_freq = 0, cpu_flags, new_cpu_rev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 char cpu_info[65];
25
Yinghai Luafae8652008-09-14 02:33:16 -070026 early_init_transmeta(c);
27
Borislav Petkov27c13ec2009-11-21 14:01:45 +010028 cpu_detect_cache_sizes(c);
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
30 /* Print CMS and CPU revision */
31 max = cpuid_eax(0x80860000);
32 cpu_rev = 0;
Paolo Ciarrocchif9751822008-02-22 23:10:28 +010033 if (max >= 0x80860001) {
34 cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 if (cpu_rev != 0x02000000) {
36 printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
37 (cpu_rev >> 24) & 0xff,
38 (cpu_rev >> 16) & 0xff,
39 (cpu_rev >> 8) & 0xff,
40 cpu_rev & 0xff,
41 cpu_freq);
42 }
43 }
Paolo Ciarrocchif9751822008-02-22 23:10:28 +010044 if (max >= 0x80860002) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy);
46 if (cpu_rev == 0x02000000) {
47 printk(KERN_INFO "CPU: Processor revision %08X, %u MHz\n",
48 new_cpu_rev, cpu_freq);
49 }
50 printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
51 (cms_rev1 >> 24) & 0xff,
52 (cms_rev1 >> 16) & 0xff,
53 (cms_rev1 >> 8) & 0xff,
54 cms_rev1 & 0xff,
55 cms_rev2);
56 }
Paolo Ciarrocchif9751822008-02-22 23:10:28 +010057 if (max >= 0x80860006) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 cpuid(0x80860003,
59 (void *)&cpu_info[0],
60 (void *)&cpu_info[4],
61 (void *)&cpu_info[8],
62 (void *)&cpu_info[12]);
63 cpuid(0x80860004,
64 (void *)&cpu_info[16],
65 (void *)&cpu_info[20],
66 (void *)&cpu_info[24],
67 (void *)&cpu_info[28]);
68 cpuid(0x80860005,
69 (void *)&cpu_info[32],
70 (void *)&cpu_info[36],
71 (void *)&cpu_info[40],
72 (void *)&cpu_info[44]);
73 cpuid(0x80860006,
74 (void *)&cpu_info[48],
75 (void *)&cpu_info[52],
76 (void *)&cpu_info[56],
77 (void *)&cpu_info[60]);
78 cpu_info[64] = '\0';
79 printk(KERN_INFO "CPU: %s\n", cpu_info);
80 }
81
82 /* Unhide possibly hidden capability flags */
83 rdmsr(0x80860004, cap_mask, uk);
84 wrmsr(0x80860004, ~0, uk);
85 c->x86_capability[0] = cpuid_edx(0x00000001);
86 wrmsr(0x80860004, cap_mask, uk);
H. Peter Anvin30b82ea2007-02-13 13:26:24 +010087
88 /* All Transmeta CPUs have a constant TSC */
Ingo Molnar10cd5a12008-02-26 08:52:39 +010089 set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
Paolo Ciarrocchif9751822008-02-22 23:10:28 +010090
Andrew Morton39bbb072005-08-01 21:11:44 -070091#ifdef CONFIG_SYSCTL
Paolo Ciarrocchif9751822008-02-22 23:10:28 +010092 /*
93 * randomize_va_space slows us down enormously;
94 * it probably triggers retranslation of x86->native bytecode
95 */
Eric Lammertscdf32ea2005-07-31 22:34:42 -070096 randomize_va_space = 0;
Andrew Morton39bbb072005-08-01 21:11:44 -070097#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070098}
99
Paul Gortmaker148f9bb2013-06-18 18:23:59 -0400100static const struct cpu_dev transmeta_cpu_dev = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 .c_vendor = "Transmeta",
102 .c_ident = { "GenuineTMx86", "TransmetaCPU" },
Yinghai Luafae8652008-09-14 02:33:16 -0700103 .c_early_init = early_init_transmeta,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 .c_init = init_transmeta,
Yinghai Lu10a434f2008-09-04 21:09:45 +0200105 .c_x86_vendor = X86_VENDOR_TRANSMETA,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106};
107
Yinghai Lu10a434f2008-09-04 21:09:45 +0200108cpu_dev_register(transmeta_cpu_dev);