1 #include <linux/kernel.h> 2 #include <linux/mm.h> 3 #include <linux/init.h> 4 #include <asm/processor.h> 5 #include <asm/msr.h> 6 #include "cpu.h" 7 8 static void __cpuinit early_init_transmeta(struct cpuinfo_x86 *c) 9 { 10 u32 xlvl; 11 12 /* Transmeta-defined flags: level 0x80860001 */ 13 xlvl = cpuid_eax(0x80860000); 14 if ((xlvl & 0xffff0000) == 0x80860000) { 15 if (xlvl >= 0x80860001) 16 c->x86_capability[2] = cpuid_edx(0x80860001); 17 } 18 } 19 20 static void __cpuinit init_transmeta(struct cpuinfo_x86 *c) 21 { 22 unsigned int cap_mask, uk, max, dummy; 23 unsigned int cms_rev1, cms_rev2; 24 unsigned int cpu_rev, cpu_freq = 0, cpu_flags, new_cpu_rev; 25 char cpu_info[65]; 26 27 early_init_transmeta(c); 28 29 cpu_detect_cache_sizes(c); 30 31 /* Print CMS and CPU revision */ 32 max = cpuid_eax(0x80860000); 33 cpu_rev = 0; 34 if (max >= 0x80860001) { 35 cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags); 36 if (cpu_rev != 0x02000000) { 37 printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n", 38 (cpu_rev >> 24) & 0xff, 39 (cpu_rev >> 16) & 0xff, 40 (cpu_rev >> 8) & 0xff, 41 cpu_rev & 0xff, 42 cpu_freq); 43 } 44 } 45 if (max >= 0x80860002) { 46 cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy); 47 if (cpu_rev == 0x02000000) { 48 printk(KERN_INFO "CPU: Processor revision %08X, %u MHz\n", 49 new_cpu_rev, cpu_freq); 50 } 51 printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n", 52 (cms_rev1 >> 24) & 0xff, 53 (cms_rev1 >> 16) & 0xff, 54 (cms_rev1 >> 8) & 0xff, 55 cms_rev1 & 0xff, 56 cms_rev2); 57 } 58 if (max >= 0x80860006) { 59 cpuid(0x80860003, 60 (void *)&cpu_info[0], 61 (void *)&cpu_info[4], 62 (void *)&cpu_info[8], 63 (void *)&cpu_info[12]); 64 cpuid(0x80860004, 65 (void *)&cpu_info[16], 66 (void *)&cpu_info[20], 67 (void *)&cpu_info[24], 68 (void *)&cpu_info[28]); 69 cpuid(0x80860005, 70 (void *)&cpu_info[32], 71 (void *)&cpu_info[36], 72 (void *)&cpu_info[40], 73 (void *)&cpu_info[44]); 74 cpuid(0x80860006, 75 (void *)&cpu_info[48], 76 (void *)&cpu_info[52], 77 (void *)&cpu_info[56], 78 (void *)&cpu_info[60]); 79 cpu_info[64] = '\0'; 80 printk(KERN_INFO "CPU: %s\n", cpu_info); 81 } 82 83 /* Unhide possibly hidden capability flags */ 84 rdmsr(0x80860004, cap_mask, uk); 85 wrmsr(0x80860004, ~0, uk); 86 c->x86_capability[0] = cpuid_edx(0x00000001); 87 wrmsr(0x80860004, cap_mask, uk); 88 89 /* All Transmeta CPUs have a constant TSC */ 90 set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); 91 92 #ifdef CONFIG_SYSCTL 93 /* 94 * randomize_va_space slows us down enormously; 95 * it probably triggers retranslation of x86->native bytecode 96 */ 97 randomize_va_space = 0; 98 #endif 99 } 100 101 static const struct cpu_dev __cpuinitconst transmeta_cpu_dev = { 102 .c_vendor = "Transmeta", 103 .c_ident = { "GenuineTMx86", "TransmetaCPU" }, 104 .c_early_init = early_init_transmeta, 105 .c_init = init_transmeta, 106 .c_x86_vendor = X86_VENDOR_TRANSMETA, 107 }; 108 109 cpu_dev_register(transmeta_cpu_dev); 110