#include <linux/kernel.h> #include <linux/mm.h> #include <linux/init.h> #include <asm/processor.h> #include <asm/msr.h> #include "cpu.h" static void __cpuinit init_transmeta(struct cpuinfo_x86 *c) { unsigned int cap_mask, uk, max, dummy; unsigned int cms_rev1, cms_rev2; unsigned int cpu_rev, cpu_freq, cpu_flags, new_cpu_rev; char cpu_info[65]; get_model_name(c); /* Same as AMD/Cyrix */ display_cacheinfo(c); /* Print CMS and CPU revision */ max = cpuid_eax(0x80860000); cpu_rev = 0; if ( max >= 0x80860001 ) { cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags); if (cpu_rev != 0x02000000) { printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n", (cpu_rev >> 24) & 0xff, (cpu_rev >> 16) & 0xff, (cpu_rev >> 8) & 0xff, cpu_rev & 0xff, cpu_freq); } } if ( max >= 0x80860002 ) { cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy); if (cpu_rev == 0x02000000) { printk(KERN_INFO "CPU: Processor revision %08X, %u MHz\n", new_cpu_rev, cpu_freq); } printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n", (cms_rev1 >> 24) & 0xff, (cms_rev1 >> 16) & 0xff, (cms_rev1 >> 8) & 0xff, cms_rev1 & 0xff, cms_rev2); } if ( max >= 0x80860006 ) { cpuid(0x80860003, (void *)&cpu_info[0], (void *)&cpu_info[4], (void *)&cpu_info[8], (void *)&cpu_info[12]); cpuid(0x80860004, (void *)&cpu_info[16], (void *)&cpu_info[20], (void *)&cpu_info[24], (void *)&cpu_info[28]); cpuid(0x80860005, (void *)&cpu_info[32], (void *)&cpu_info[36], (void *)&cpu_info[40], (void *)&cpu_info[44]); cpuid(0x80860006, (void *)&cpu_info[48], (void *)&cpu_info[52], (void *)&cpu_info[56], (void *)&cpu_info[60]); cpu_info[64] = '\0'; printk(KERN_INFO "CPU: %s\n", cpu_info); } /* Unhide possibly hidden capability flags */ rdmsr(0x80860004, cap_mask, uk); wrmsr(0x80860004, ~0, uk); c->x86_capability[0] = cpuid_edx(0x00000001); wrmsr(0x80860004, cap_mask, uk); /* If we can run i686 user-space code, call us an i686 */ #define USER686 (X86_FEATURE_TSC|X86_FEATURE_CX8|X86_FEATURE_CMOV) if ( c->x86 == 5 && (c->x86_capability[0] & USER686) == USER686 ) c->x86 = 6; #ifdef CONFIG_SYSCTL /* randomize_va_space slows us down enormously; it probably triggers retranslation of x86->native bytecode */ randomize_va_space = 0; #endif } static void __cpuinit transmeta_identify(struct cpuinfo_x86 * c) { u32 xlvl; /* Transmeta-defined flags: level 0x80860001 */ xlvl = cpuid_eax(0x80860000); if ( (xlvl & 0xffff0000) == 0x80860000 ) { if ( xlvl >= 0x80860001 ) c->x86_capability[2] = cpuid_edx(0x80860001); } } static struct cpu_dev transmeta_cpu_dev __cpuinitdata = { .c_vendor = "Transmeta", .c_ident = { "GenuineTMx86", "TransmetaCPU" }, .c_init = init_transmeta, .c_identify = transmeta_identify, }; int __init transmeta_init_cpu(void) { cpu_devs[X86_VENDOR_TRANSMETA] = &transmeta_cpu_dev; return 0; } //early_arch_initcall(transmeta_init_cpu); static int __init transmeta_exit_cpu(void) { cpu_devs[X86_VENDOR_TRANSMETA] = NULL; return 0; } late_initcall(transmeta_exit_cpu);