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