2 * Copyright (c) 1992 Terrence R. Lambert.
3 * Copyright (c) 1982, 1987, 1990 The Regents of the University of California.
4 * Copyright (c) 1997 KATO Takenori.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
46 #include <sys/param.h>
49 #include <sys/eventhandler.h>
50 #include <sys/systm.h>
51 #include <sys/kernel.h>
52 #include <sys/sysctl.h>
53 #include <sys/power.h>
55 #include <machine/asmacros.h>
56 #include <machine/clock.h>
57 #include <machine/cputypes.h>
58 #include <machine/intr_machdep.h>
59 #include <machine/md_var.h>
60 #include <machine/segments.h>
61 #include <machine/specialreg.h>
63 #define IDENTBLUE_CYRIX486 0
64 #define IDENTBLUE_IBMCPU 1
65 #define IDENTBLUE_CYRIXM2 2
67 /* XXX - should be in header file: */
68 void printcpuinfo(void);
69 void finishidentcpu(void);
70 void earlysetcpuclass(void);
71 #if defined(I586_CPU) && defined(CPU_WT_ALLOC)
72 void enable_K5_wt_alloc(void);
73 void enable_K6_wt_alloc(void);
74 void enable_K6_2_wt_alloc(void);
76 void panicifcpuunsupported(void);
78 static void identifycyrix(void);
79 static void init_exthigh(void);
80 static u_int find_cpu_vendor_id(void);
81 static void print_AMD_info(void);
82 static void print_INTEL_info(void);
83 static void print_INTEL_TLB(u_int data);
84 static void print_AMD_assoc(int i);
85 static void print_transmeta_info(void);
86 static void print_via_padlock_info(void);
89 u_int cpu_exthigh; /* Highest arg to extended CPUID */
90 u_int cyrix_did; /* Device ID of Cyrix CPU */
91 char machine[] = MACHINE;
92 SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD,
93 machine, 0, "Machine class");
95 static char cpu_model[128];
96 SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD,
97 cpu_model, 0, "Machine model");
99 static int hw_clockrate;
100 SYSCTL_INT(_hw, OID_AUTO, clockrate, CTLFLAG_RD,
101 &hw_clockrate, 0, "CPU instruction clock rate");
103 static eventhandler_tag tsc_post_tag;
105 static char cpu_brand[48];
107 #define MAX_BRAND_INDEX 8
109 static const char *cpu_brandtable[MAX_BRAND_INDEX + 1] = {
113 "Intel Pentium III Xeon",
125 { "Intel 80286", CPUCLASS_286 }, /* CPU_286 */
126 { "i386SX", CPUCLASS_386 }, /* CPU_386SX */
127 { "i386DX", CPUCLASS_386 }, /* CPU_386 */
128 { "i486SX", CPUCLASS_486 }, /* CPU_486SX */
129 { "i486DX", CPUCLASS_486 }, /* CPU_486 */
130 { "Pentium", CPUCLASS_586 }, /* CPU_586 */
131 { "Cyrix 486", CPUCLASS_486 }, /* CPU_486DLC */
132 { "Pentium Pro", CPUCLASS_686 }, /* CPU_686 */
133 { "Cyrix 5x86", CPUCLASS_486 }, /* CPU_M1SC */
134 { "Cyrix 6x86", CPUCLASS_486 }, /* CPU_M1 */
135 { "Blue Lightning", CPUCLASS_486 }, /* CPU_BLUE */
136 { "Cyrix 6x86MX", CPUCLASS_686 }, /* CPU_M2 */
137 { "NexGen 586", CPUCLASS_386 }, /* CPU_NX586 (XXX) */
138 { "Cyrix 486S/DX", CPUCLASS_486 }, /* CPU_CY486DX */
139 { "Pentium II", CPUCLASS_686 }, /* CPU_PII */
140 { "Pentium III", CPUCLASS_686 }, /* CPU_PIII */
141 { "Pentium 4", CPUCLASS_686 }, /* CPU_P4 */
148 { INTEL_VENDOR_ID, CPU_VENDOR_INTEL }, /* GenuineIntel */
149 { AMD_VENDOR_ID, CPU_VENDOR_AMD }, /* AuthenticAMD */
150 { CENTAUR_VENDOR_ID, CPU_VENDOR_CENTAUR }, /* CentaurHauls */
151 { NSC_VENDOR_ID, CPU_VENDOR_NSC }, /* Geode by NSC */
152 { CYRIX_VENDOR_ID, CPU_VENDOR_CYRIX }, /* CyrixInstead */
153 { TRANSMETA_VENDOR_ID, CPU_VENDOR_TRANSMETA }, /* GenuineTMx86 */
154 { SIS_VENDOR_ID, CPU_VENDOR_SIS }, /* SiS SiS SiS */
155 { UMC_VENDOR_ID, CPU_VENDOR_UMC }, /* UMC UMC UMC */
156 { NEXGEN_VENDOR_ID, CPU_VENDOR_NEXGEN }, /* NexGenDriven */
157 { RISE_VENDOR_ID, CPU_VENDOR_RISE }, /* RiseRiseRise */
159 /* XXX CPUID 8000_0000h and 8086_0000h, not 0000_0000h */
160 { "TransmetaCPU", CPU_VENDOR_TRANSMETA },
164 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
165 int has_f00f_bug = 0; /* Initialized so that it can be patched. */
176 (cpu_vendor_id == CPU_VENDOR_INTEL ||
177 cpu_vendor_id == CPU_VENDOR_AMD ||
178 cpu_vendor_id == CPU_VENDOR_TRANSMETA ||
179 cpu_vendor_id == CPU_VENDOR_CENTAUR ||
180 cpu_vendor_id == CPU_VENDOR_NSC)) {
181 do_cpuid(0x80000000, regs);
182 if (regs[0] >= 0x80000000)
183 cpu_exthigh = regs[0];
196 cpu_class = i386_cpus[cpu].cpu_class;
198 strncpy(cpu_model, i386_cpus[cpu].cpu_name, sizeof (cpu_model));
200 /* Check for extended CPUID information and a processor name. */
202 if (cpu_exthigh >= 0x80000004) {
204 for (i = 0x80000002; i < 0x80000005; i++) {
206 memcpy(brand, regs, sizeof(regs));
207 brand += sizeof(regs);
211 if (cpu_vendor_id == CPU_VENDOR_INTEL) {
212 if ((cpu_id & 0xf00) > 0x300) {
217 switch (cpu_id & 0x3000) {
219 strcpy(cpu_model, "Overdrive ");
222 strcpy(cpu_model, "Dual ");
226 switch (cpu_id & 0xf00) {
228 strcat(cpu_model, "i486 ");
229 /* Check the particular flavor of 486 */
230 switch (cpu_id & 0xf0) {
233 strcat(cpu_model, "DX");
236 strcat(cpu_model, "SX");
239 strcat(cpu_model, "DX2");
242 strcat(cpu_model, "SL");
245 strcat(cpu_model, "SX2");
249 "DX2 Write-Back Enhanced");
252 strcat(cpu_model, "DX4");
257 /* Check the particular flavor of 586 */
258 strcat(cpu_model, "Pentium");
259 switch (cpu_id & 0xf0) {
261 strcat(cpu_model, " A-step");
264 strcat(cpu_model, "/P5");
267 strcat(cpu_model, "/P54C");
270 strcat(cpu_model, "/P24T");
273 strcat(cpu_model, "/P55C");
276 strcat(cpu_model, "/P54C");
279 strcat(cpu_model, "/P55C (quarter-micron)");
285 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
287 * XXX - If/when Intel fixes the bug, this
288 * should also check the version of the
289 * CPU, not just that it's a Pentium.
295 /* Check the particular flavor of 686 */
296 switch (cpu_id & 0xf0) {
298 strcat(cpu_model, "Pentium Pro A-step");
301 strcat(cpu_model, "Pentium Pro");
307 "Pentium II/Pentium II Xeon/Celeron");
315 "Pentium III/Pentium III Xeon/Celeron");
319 strcat(cpu_model, "Unknown 80686");
324 strcat(cpu_model, "Pentium 4");
328 strcat(cpu_model, "unknown");
333 * If we didn't get a brand name from the extended
334 * CPUID, try to look it up in the brand table.
336 if (cpu_high > 0 && *cpu_brand == '\0') {
337 brand_index = cpu_procinfo & CPUID_BRAND_INDEX;
338 if (brand_index <= MAX_BRAND_INDEX &&
339 cpu_brandtable[brand_index] != NULL)
341 cpu_brandtable[brand_index]);
344 } else if (cpu_vendor_id == CPU_VENDOR_AMD) {
346 * Values taken from AMD Processor Recognition
347 * http://www.amd.com/K6/k6docs/pdf/20734g.pdf
348 * (also describes ``Features'' encodings.
350 strcpy(cpu_model, "AMD ");
351 switch (cpu_id & 0xFF0) {
353 strcat(cpu_model, "Standard Am486DX");
356 strcat(cpu_model, "Enhanced Am486DX2 Write-Through");
359 strcat(cpu_model, "Enhanced Am486DX2 Write-Back");
362 strcat(cpu_model, "Enhanced Am486DX4/Am5x86 Write-Through");
365 strcat(cpu_model, "Enhanced Am486DX4/Am5x86 Write-Back");
368 strcat(cpu_model, "Am5x86 Write-Through");
371 strcat(cpu_model, "Am5x86 Write-Back");
374 strcat(cpu_model, "K5 model 0");
378 strcat(cpu_model, "K5 model 1");
381 strcat(cpu_model, "K5 PR166 (model 2)");
384 strcat(cpu_model, "K5 PR200 (model 3)");
387 strcat(cpu_model, "K6");
390 strcat(cpu_model, "K6 266 (model 1)");
393 strcat(cpu_model, "K6-2");
396 strcat(cpu_model, "K6-III");
399 strcat(cpu_model, "Geode LX");
401 * Make sure the TSC runs through suspension,
402 * otherwise we can't use it as timecounter
404 wrmsr(0x1900, rdmsr(0x1900) | 0x20ULL);
407 strcat(cpu_model, "Unknown");
410 #if defined(I586_CPU) && defined(CPU_WT_ALLOC)
411 if ((cpu_id & 0xf00) == 0x500) {
412 if (((cpu_id & 0x0f0) > 0)
413 && ((cpu_id & 0x0f0) < 0x60)
414 && ((cpu_id & 0x00f) > 3))
415 enable_K5_wt_alloc();
416 else if (((cpu_id & 0x0f0) > 0x80)
417 || (((cpu_id & 0x0f0) == 0x80)
418 && (cpu_id & 0x00f) > 0x07))
419 enable_K6_2_wt_alloc();
420 else if ((cpu_id & 0x0f0) > 0x50)
421 enable_K6_wt_alloc();
424 } else if (cpu_vendor_id == CPU_VENDOR_CYRIX) {
425 strcpy(cpu_model, "Cyrix ");
426 switch (cpu_id & 0xff0) {
428 strcat(cpu_model, "MediaGX");
431 strcat(cpu_model, "6x86");
434 cpu_class = CPUCLASS_586;
435 strcat(cpu_model, "GXm");
438 strcat(cpu_model, "6x86MX");
442 * Even though CPU supports the cpuid
443 * instruction, it can be disabled.
444 * Therefore, this routine supports all Cyrix
447 switch (cyrix_did & 0xf0) {
449 switch (cyrix_did & 0x0f) {
451 strcat(cpu_model, "486SLC");
454 strcat(cpu_model, "486DLC");
457 strcat(cpu_model, "486SLC2");
460 strcat(cpu_model, "486DLC2");
463 strcat(cpu_model, "486SRx");
466 strcat(cpu_model, "486DRx");
469 strcat(cpu_model, "486SRx2");
472 strcat(cpu_model, "486DRx2");
475 strcat(cpu_model, "486SRu");
478 strcat(cpu_model, "486DRu");
481 strcat(cpu_model, "486SRu2");
484 strcat(cpu_model, "486DRu2");
487 strcat(cpu_model, "Unknown");
492 switch (cyrix_did & 0x0f) {
494 strcat(cpu_model, "486S");
497 strcat(cpu_model, "486S2");
500 strcat(cpu_model, "486Se");
503 strcat(cpu_model, "486S2e");
506 strcat(cpu_model, "486DX");
509 strcat(cpu_model, "486DX2");
512 strcat(cpu_model, "486DX4");
515 strcat(cpu_model, "Unknown");
520 if ((cyrix_did & 0x0f) < 8)
521 strcat(cpu_model, "6x86"); /* Where did you get it? */
523 strcat(cpu_model, "5x86");
526 strcat(cpu_model, "6x86");
529 if ((cyrix_did & 0xf000) == 0x3000) {
530 cpu_class = CPUCLASS_586;
531 strcat(cpu_model, "GXm");
533 strcat(cpu_model, "MediaGX");
536 strcat(cpu_model, "6x86MX");
539 switch (cyrix_did & 0x0f) {
541 strcat(cpu_model, "Overdrive CPU");
544 strcpy(cpu_model, "Texas Instruments 486SXL");
547 strcat(cpu_model, "486SLC/DLC");
550 strcat(cpu_model, "Unknown");
555 strcat(cpu_model, "Unknown");
560 } else if (cpu_vendor_id == CPU_VENDOR_RISE) {
561 strcpy(cpu_model, "Rise ");
562 switch (cpu_id & 0xff0) {
563 case 0x500: /* 6401 and 6441 (Kirin) */
564 case 0x520: /* 6510 (Lynx) */
565 strcat(cpu_model, "mP6");
568 strcat(cpu_model, "Unknown");
570 } else if (cpu_vendor_id == CPU_VENDOR_CENTAUR) {
571 switch (cpu_id & 0xff0) {
573 strcpy(cpu_model, "IDT WinChip C6");
575 * http://www.centtech.com/c6_data_sheet.pdf
577 * I-12 RDTSC may return incoherent values in EDX:EAX
578 * I-13 RDTSC hangs when certain event counters are used
583 strcpy(cpu_model, "IDT WinChip 2");
586 strcpy(cpu_model, "IDT WinChip 3");
589 strcpy(cpu_model, "VIA C3 Samuel");
593 strcpy(cpu_model, "VIA C3 Ezra");
595 strcpy(cpu_model, "VIA C3 Samuel 2");
598 strcpy(cpu_model, "VIA C3 Ezra-T");
601 strcpy(cpu_model, "VIA C3 Nehemiah");
605 strcpy(cpu_model, "VIA C7 Esther");
608 strcpy(cpu_model, "VIA Nano");
611 strcpy(cpu_model, "VIA/IDT Unknown");
613 } else if (cpu_vendor_id == CPU_VENDOR_IBM) {
614 strcpy(cpu_model, "Blue Lightning CPU");
615 } else if (cpu_vendor_id == CPU_VENDOR_NSC) {
616 switch (cpu_id & 0xff0) {
618 strcpy(cpu_model, "Geode SC1100");
620 if ((cpu_id & CPUID_STEPPING) == 0)
624 strcpy(cpu_model, "Geode/NSC unknown");
630 * Replace cpu_model with cpu_brand minus leading spaces if
634 while (*brand == ' ')
637 strcpy(cpu_model, brand);
639 printf("%s (", cpu_model);
647 #if defined(I486_CPU)
652 #if defined(I586_CPU)
655 hw_clockrate = (tsc_freq + 5000) / 1000000;
656 printf("%jd.%02d-MHz ",
657 (intmax_t)(tsc_freq + 4999) / 1000000,
658 (u_int)((tsc_freq + 4999) / 10000) % 100);
663 #if defined(I686_CPU)
666 hw_clockrate = (tsc_freq + 5000) / 1000000;
667 printf("%jd.%02d-MHz ",
668 (intmax_t)(tsc_freq + 4999) / 1000000,
669 (u_int)((tsc_freq + 4999) / 10000) % 100);
675 printf("Unknown"); /* will panic below... */
677 printf("-class CPU)\n");
679 printf(" Origin = \"%s\"",cpu_vendor);
681 printf(" Id = 0x%x", cpu_id);
683 if (cpu_vendor_id == CPU_VENDOR_INTEL ||
684 cpu_vendor_id == CPU_VENDOR_AMD ||
685 cpu_vendor_id == CPU_VENDOR_TRANSMETA ||
686 cpu_vendor_id == CPU_VENDOR_RISE ||
687 cpu_vendor_id == CPU_VENDOR_CENTAUR ||
688 cpu_vendor_id == CPU_VENDOR_NSC ||
689 (cpu_vendor_id == CPU_VENDOR_CYRIX &&
690 ((cpu_id & 0xf00) > 0x500))) {
691 printf(" Family = 0x%x", CPUID_TO_FAMILY(cpu_id));
692 printf(" Model = 0x%x", CPUID_TO_MODEL(cpu_id));
693 printf(" Stepping = %u", cpu_id & CPUID_STEPPING);
694 if (cpu_vendor_id == CPU_VENDOR_CYRIX)
695 printf("\n DIR=0x%04x", cyrix_did);
697 * AMD CPUID Specification
698 * http://support.amd.com/us/Embedded_TechDocs/25481.pdf
700 * Intel Processor Identification and CPUID Instruction
701 * http://www.intel.com/assets/pdf/appnote/241618.pdf
706 * Here we should probably set up flags indicating
707 * whether or not various features are available.
708 * The interesting ones are probably VME, PSE, PAE,
709 * and PGE. The code already assumes without bothering
710 * to check that all CPUs >= Pentium have a TSC and
713 printf("\n Features=0x%b", cpu_feature,
715 "\001FPU" /* Integral FPU */
716 "\002VME" /* Extended VM86 mode support */
717 "\003DE" /* Debugging Extensions (CR4.DE) */
718 "\004PSE" /* 4MByte page tables */
719 "\005TSC" /* Timestamp counter */
720 "\006MSR" /* Machine specific registers */
721 "\007PAE" /* Physical address extension */
722 "\010MCE" /* Machine Check support */
723 "\011CX8" /* CMPEXCH8 instruction */
724 "\012APIC" /* SMP local APIC */
725 "\013oldMTRR" /* Previous implementation of MTRR */
726 "\014SEP" /* Fast System Call */
727 "\015MTRR" /* Memory Type Range Registers */
728 "\016PGE" /* PG_G (global bit) support */
729 "\017MCA" /* Machine Check Architecture */
730 "\020CMOV" /* CMOV instruction */
731 "\021PAT" /* Page attributes table */
732 "\022PSE36" /* 36 bit address space support */
733 "\023PN" /* Processor Serial number */
734 "\024CLFLUSH" /* Has the CLFLUSH instruction */
736 "\026DTS" /* Debug Trace Store */
737 "\027ACPI" /* ACPI support */
738 "\030MMX" /* MMX instructions */
739 "\031FXSR" /* FXSAVE/FXRSTOR */
740 "\032SSE" /* Streaming SIMD Extensions */
741 "\033SSE2" /* Streaming SIMD Extensions #2 */
742 "\034SS" /* Self snoop */
743 "\035HTT" /* Hyperthreading (see EBX bit 16-23) */
744 "\036TM" /* Thermal Monitor clock slowdown */
745 "\037IA64" /* CPU can execute IA64 instructions */
746 "\040PBE" /* Pending Break Enable */
749 if (cpu_feature2 != 0) {
750 printf("\n Features2=0x%b", cpu_feature2,
752 "\001SSE3" /* SSE3 */
753 "\002PCLMULQDQ" /* Carry-Less Mul Quadword */
754 "\003DTES64" /* 64-bit Debug Trace */
755 "\004MON" /* MONITOR/MWAIT Instructions */
756 "\005DS_CPL" /* CPL Qualified Debug Store */
757 "\006VMX" /* Virtual Machine Extensions */
758 "\007SMX" /* Safer Mode Extensions */
759 "\010EST" /* Enhanced SpeedStep */
760 "\011TM2" /* Thermal Monitor 2 */
761 "\012SSSE3" /* SSSE3 */
762 "\013CNXT-ID" /* L1 context ID available */
764 "\015FMA" /* Fused Multiply Add */
765 "\016CX16" /* CMPXCHG16B Instruction */
766 "\017xTPR" /* Send Task Priority Messages*/
767 "\020PDCM" /* Perf/Debug Capability MSR */
769 "\022PCID" /* Process-context Identifiers*/
770 "\023DCA" /* Direct Cache Access */
771 "\024SSE4.1" /* SSE 4.1 */
772 "\025SSE4.2" /* SSE 4.2 */
773 "\026x2APIC" /* xAPIC Extensions */
774 "\027MOVBE" /* MOVBE Instruction */
775 "\030POPCNT" /* POPCNT Instruction */
776 "\031TSCDLT" /* TSC-Deadline Timer */
777 "\032AESNI" /* AES Crypto */
778 "\033XSAVE" /* XSAVE/XRSTOR States */
779 "\034OSXSAVE" /* OS-Enabled State Management*/
780 "\035AVX" /* Advanced Vector Extensions */
781 "\036F16C" /* Half-precision conversions */
782 "\037RDRAND" /* RDRAND Instruction */
783 "\040HV" /* Hypervisor */
787 if (amd_feature != 0) {
788 printf("\n AMD Features=0x%b", amd_feature,
790 "\001<s0>" /* Same */
791 "\002<s1>" /* Same */
792 "\003<s2>" /* Same */
793 "\004<s3>" /* Same */
794 "\005<s4>" /* Same */
795 "\006<s5>" /* Same */
796 "\007<s6>" /* Same */
797 "\010<s7>" /* Same */
798 "\011<s8>" /* Same */
799 "\012<s9>" /* Same */
800 "\013<b10>" /* Undefined */
801 "\014SYSCALL" /* Have SYSCALL/SYSRET */
802 "\015<s12>" /* Same */
803 "\016<s13>" /* Same */
804 "\017<s14>" /* Same */
805 "\020<s15>" /* Same */
806 "\021<s16>" /* Same */
807 "\022<s17>" /* Same */
808 "\023<b18>" /* Reserved, unknown */
809 "\024MP" /* Multiprocessor Capable */
810 "\025NX" /* Has EFER.NXE, NX */
811 "\026<b21>" /* Undefined */
812 "\027MMX+" /* AMD MMX Extensions */
813 "\030<s23>" /* Same */
814 "\031<s24>" /* Same */
815 "\032FFXSR" /* Fast FXSAVE/FXRSTOR */
816 "\033Page1GB" /* 1-GB large page support */
817 "\034RDTSCP" /* RDTSCP */
818 "\035<b28>" /* Undefined */
819 "\036LM" /* 64 bit long mode */
820 "\0373DNow!+" /* AMD 3DNow! Extensions */
821 "\0403DNow!" /* AMD 3DNow! */
825 if (amd_feature2 != 0) {
826 printf("\n AMD Features2=0x%b", amd_feature2,
828 "\001LAHF" /* LAHF/SAHF in long mode */
829 "\002CMP" /* CMP legacy */
830 "\003SVM" /* Secure Virtual Mode */
831 "\004ExtAPIC" /* Extended APIC register */
832 "\005CR8" /* CR8 in legacy mode */
833 "\006ABM" /* LZCNT instruction */
834 "\007SSE4A" /* SSE4A */
835 "\010MAS" /* Misaligned SSE mode */
836 "\011Prefetch" /* 3DNow! Prefetch/PrefetchW */
837 "\012OSVW" /* OS visible workaround */
838 "\013IBS" /* Instruction based sampling */
839 "\014XOP" /* XOP extended instructions */
840 "\015SKINIT" /* SKINIT/STGI */
841 "\016WDT" /* Watchdog timer */
843 "\020LWP" /* Lightweight Profiling */
844 "\021FMA4" /* 4-operand FMA instructions */
845 "\022TCE" /* Translation Cache Extension */
847 "\024NodeId" /* NodeId MSR support */
849 "\026TBM" /* Trailing Bit Manipulation */
850 "\027Topology" /* Topology Extensions */
851 "\030PCXC" /* Core perf count */
852 "\031PNXC" /* NB perf count */
854 "\033DBE" /* Data Breakpoint extension */
855 "\034PTSC" /* Performance TSC */
856 "\035PL2I" /* L2I perf count */
863 if (via_feature_rng != 0 || via_feature_xcrypt != 0)
864 print_via_padlock_info();
866 if ((cpu_feature & CPUID_HTT) &&
867 cpu_vendor_id == CPU_VENDOR_AMD)
868 cpu_feature &= ~CPUID_HTT;
871 * If this CPU supports P-state invariant TSC then
872 * mention the capability.
874 if (tsc_is_invariant) {
875 printf("\n TSC: P-state invariant");
877 printf(", performance statistics");
881 } else if (cpu_vendor_id == CPU_VENDOR_CYRIX) {
882 printf(" DIR=0x%04x", cyrix_did);
883 printf(" Stepping=%u", (cyrix_did & 0xf000) >> 12);
884 printf(" Revision=%u", (cyrix_did & 0x0f00) >> 8);
885 #ifndef CYRIX_CACHE_REALLY_WORKS
886 if (cpu == CPU_M1 && (cyrix_did & 0xff00) < 0x1700)
887 printf("\n CPU cache: write-through mode");
891 /* Avoid ugly blank lines: only print newline when we have to. */
892 if (*cpu_vendor || cpu_id)
898 if (cpu_vendor_id == CPU_VENDOR_AMD)
900 else if (cpu_vendor_id == CPU_VENDOR_INTEL)
902 else if (cpu_vendor_id == CPU_VENDOR_TRANSMETA)
903 print_transmeta_info();
907 panicifcpuunsupported(void)
911 #if !defined(I486_CPU) && !defined(I586_CPU) && !defined(I686_CPU)
912 #error This kernel is not configured for one of the supported CPUs
917 * Now that we have told the user what they have,
918 * let them know if that machine type isn't configured.
921 case CPUCLASS_286: /* a 286 should not make it this far, anyway */
923 #if !defined(I486_CPU)
926 #if !defined(I586_CPU)
929 #if !defined(I686_CPU)
932 panic("CPU class not configured");
939 static volatile u_int trap_by_rdmsr;
942 * Special exception 6 handler.
943 * The rdmsr instruction generates invalid opcodes fault on 486-class
944 * Cyrix CPU. Stacked eip register points the rdmsr instruction in the
945 * function identblue() when this handler is called. Stacked eip should
949 #ifdef __GNUCLIKE_ASM
954 .type " __XSTRING(CNAME(bluetrap6)) ",@function \n\
955 " __XSTRING(CNAME(bluetrap6)) ": \n\
957 movl $0xa8c1d," __XSTRING(CNAME(trap_by_rdmsr)) " \n\
958 addl $2, (%esp) /* rdmsr is a 2-byte instruction */ \n\
964 * Special exception 13 handler.
965 * Accessing non-existent MSR generates general protection fault.
967 inthand_t bluetrap13;
968 #ifdef __GNUCLIKE_ASM
973 .type " __XSTRING(CNAME(bluetrap13)) ",@function \n\
974 " __XSTRING(CNAME(bluetrap13)) ": \n\
976 movl $0xa89c4," __XSTRING(CNAME(trap_by_rdmsr)) " \n\
977 popl %eax /* discard error code */ \n\
978 addl $2, (%esp) /* rdmsr is a 2-byte instruction */ \n\
984 * Distinguish IBM Blue Lightning CPU from Cyrix CPUs that does not
985 * support cpuid instruction. This function should be called after
986 * loading interrupt descriptor table register.
988 * I don't like this method that handles fault, but I couldn't get
989 * information for any other methods. Does blue giant know?
998 * Cyrix 486-class CPU does not support rdmsr instruction.
999 * The rdmsr instruction generates invalid opcode fault, and exception
1000 * will be trapped by bluetrap6() on Cyrix 486-class CPU. The
1001 * bluetrap6() set the magic number to trap_by_rdmsr.
1003 setidt(IDT_UD, bluetrap6, SDT_SYS386TGT, SEL_KPL,
1004 GSEL(GCODE_SEL, SEL_KPL));
1007 * Certain BIOS disables cpuid instruction of Cyrix 6x86MX CPU.
1008 * In this case, rdmsr generates general protection fault, and
1009 * exception will be trapped by bluetrap13().
1011 setidt(IDT_GP, bluetrap13, SDT_SYS386TGT, SEL_KPL,
1012 GSEL(GCODE_SEL, SEL_KPL));
1014 rdmsr(0x1002); /* Cyrix CPU generates fault. */
1016 if (trap_by_rdmsr == 0xa8c1d)
1017 return IDENTBLUE_CYRIX486;
1018 else if (trap_by_rdmsr == 0xa89c4)
1019 return IDENTBLUE_CYRIXM2;
1020 return IDENTBLUE_IBMCPU;
1025 * identifycyrix() set lower 16 bits of cyrix_did as follows:
1027 * F E D C B A 9 8 7 6 5 4 3 2 1 0
1028 * +-------+-------+---------------+
1029 * | SID | RID | Device ID |
1030 * | (DIR 1) | (DIR 0) |
1031 * +-------+-------+---------------+
1036 register_t saveintr;
1037 int ccr2_test = 0, dir_test = 0;
1040 saveintr = intr_disable();
1042 ccr2 = read_cyrix_reg(CCR2);
1043 write_cyrix_reg(CCR2, ccr2 ^ CCR2_LOCK_NW);
1044 read_cyrix_reg(CCR2);
1045 if (read_cyrix_reg(CCR2) != ccr2)
1047 write_cyrix_reg(CCR2, ccr2);
1049 ccr3 = read_cyrix_reg(CCR3);
1050 write_cyrix_reg(CCR3, ccr3 ^ CCR3_MAPEN3);
1051 read_cyrix_reg(CCR3);
1052 if (read_cyrix_reg(CCR3) != ccr3)
1053 dir_test = 1; /* CPU supports DIRs. */
1054 write_cyrix_reg(CCR3, ccr3);
1057 /* Device ID registers are available. */
1058 cyrix_did = read_cyrix_reg(DIR1) << 8;
1059 cyrix_did += read_cyrix_reg(DIR0);
1060 } else if (ccr2_test)
1061 cyrix_did = 0x0010; /* 486S A-step */
1063 cyrix_did = 0x00ff; /* Old 486SLC/DLC and TI486SXLC/SXL */
1065 intr_restore(saveintr);
1068 /* Update TSC freq with the value indicated by the caller. */
1070 tsc_freq_changed(void *arg __unused, const struct cf_level *level, int status)
1073 /* If there was an error during the transition, don't do anything. */
1077 /* Total setting for this level gives the new frequency in MHz. */
1078 hw_clockrate = level->total_set.freq;
1082 hook_tsc_freq(void *arg __unused)
1085 if (tsc_is_invariant)
1088 tsc_post_tag = EVENTHANDLER_REGISTER(cpufreq_post_change,
1089 tsc_freq_changed, NULL, EVENTHANDLER_PRI_ANY);
1092 SYSINIT(hook_tsc_freq, SI_SUB_CONFIGURE, SI_ORDER_ANY, hook_tsc_freq, NULL);
1095 * Final stage of CPU identification. -- Should I check TI?
1098 finishidentcpu(void)
1104 cpu_vendor_id = find_cpu_vendor_id();
1107 * Clear "Limit CPUID Maxval" bit and get the largest standard CPUID
1108 * function number again if it is set from BIOS. It is necessary
1109 * for probing correct CPU topology later.
1110 * XXX This is only done on the BSP package.
1112 if (cpu_vendor_id == CPU_VENDOR_INTEL && cpu_high > 0 && cpu_high < 4 &&
1113 ((CPUID_TO_FAMILY(cpu_id) == 0xf && CPUID_TO_MODEL(cpu_id) >= 0x3) ||
1114 (CPUID_TO_FAMILY(cpu_id) == 0x6 && CPUID_TO_MODEL(cpu_id) >= 0xe))) {
1116 msr = rdmsr(MSR_IA32_MISC_ENABLE);
1117 if ((msr & 0x400000ULL) != 0) {
1118 wrmsr(MSR_IA32_MISC_ENABLE, msr & ~0x400000ULL);
1124 if (cpu_high >= 5 && (cpu_feature2 & CPUID2_MON) != 0) {
1126 cpu_mon_mwait_flags = regs[2];
1127 cpu_mon_min_size = regs[0] & CPUID5_MON_MIN_SIZE;
1128 cpu_mon_max_size = regs[1] & CPUID5_MON_MAX_SIZE;
1131 /* Detect AMD features (PTE no-execute bit, 3dnow, 64 bit mode etc) */
1132 if (cpu_vendor_id == CPU_VENDOR_INTEL ||
1133 cpu_vendor_id == CPU_VENDOR_AMD) {
1135 if (cpu_exthigh >= 0x80000001) {
1136 do_cpuid(0x80000001, regs);
1137 amd_feature = regs[3] & ~(cpu_feature & 0x0183f3ff);
1138 amd_feature2 = regs[2];
1140 if (cpu_exthigh >= 0x80000007) {
1141 do_cpuid(0x80000007, regs);
1142 amd_pminfo = regs[3];
1144 if (cpu_exthigh >= 0x80000008) {
1145 do_cpuid(0x80000008, regs);
1146 cpu_procinfo2 = regs[2];
1148 } else if (cpu_vendor_id == CPU_VENDOR_CENTAUR) {
1150 if (cpu_exthigh >= 0x80000001) {
1151 do_cpuid(0x80000001, regs);
1152 amd_feature = regs[3] & ~(cpu_feature & 0x0183f3ff);
1154 } else if (cpu_vendor_id == CPU_VENDOR_CYRIX) {
1155 if (cpu == CPU_486) {
1157 * These conditions are equivalent to:
1158 * - CPU does not support cpuid instruction.
1159 * - Cyrix/IBM CPU is detected.
1161 isblue = identblue();
1162 if (isblue == IDENTBLUE_IBMCPU) {
1163 strcpy(cpu_vendor, "IBM");
1164 cpu_vendor_id = CPU_VENDOR_IBM;
1169 switch (cpu_id & 0xf00) {
1172 * Cyrix's datasheet does not describe DIRs.
1173 * Therefor, I assume it does not have them
1174 * and use the result of the cpuid instruction.
1175 * XXX they seem to have it for now at least. -Peter
1183 * This routine contains a trick.
1184 * Don't check (cpu_id & 0x00f0) == 0x50 to detect M2, now.
1186 switch (cyrix_did & 0x00f0) {
1195 if ((cyrix_did & 0x000f) < 8)
1208 /* M2 and later CPUs are treated as M2. */
1212 * enable cpuid instruction.
1214 ccr3 = read_cyrix_reg(CCR3);
1215 write_cyrix_reg(CCR3, CCR3_MAPEN0);
1216 write_cyrix_reg(CCR4, read_cyrix_reg(CCR4) | CCR4_CPUID);
1217 write_cyrix_reg(CCR3, ccr3);
1220 cpu_high = regs[0]; /* eax */
1222 cpu_id = regs[0]; /* eax */
1223 cpu_feature = regs[3]; /* edx */
1227 } else if (cpu == CPU_486 && *cpu_vendor == '\0') {
1229 * There are BlueLightning CPUs that do not change
1230 * undefined flags by dividing 5 by 2. In this case,
1231 * the CPU identification routine in locore.s leaves
1232 * cpu_vendor null string and puts CPU_486 into the
1235 isblue = identblue();
1236 if (isblue == IDENTBLUE_IBMCPU) {
1237 strcpy(cpu_vendor, "IBM");
1238 cpu_vendor_id = CPU_VENDOR_IBM;
1246 find_cpu_vendor_id(void)
1250 for (i = 0; i < sizeof(cpu_vendors) / sizeof(cpu_vendors[0]); i++)
1251 if (strcmp(cpu_vendor, cpu_vendors[i].vendor) == 0)
1252 return (cpu_vendors[i].vendor_id);
1257 print_AMD_assoc(int i)
1260 printf(", fully associative\n");
1262 printf(", %d-way associative\n", i);
1266 print_AMD_info(void)
1270 if (cpu_exthigh >= 0x80000005) {
1273 do_cpuid(0x80000005, regs);
1274 printf("Data TLB: %d entries", (regs[1] >> 16) & 0xff);
1275 print_AMD_assoc(regs[1] >> 24);
1276 printf("Instruction TLB: %d entries", regs[1] & 0xff);
1277 print_AMD_assoc((regs[1] >> 8) & 0xff);
1278 printf("L1 data cache: %d kbytes", regs[2] >> 24);
1279 printf(", %d bytes/line", regs[2] & 0xff);
1280 printf(", %d lines/tag", (regs[2] >> 8) & 0xff);
1281 print_AMD_assoc((regs[2] >> 16) & 0xff);
1282 printf("L1 instruction cache: %d kbytes", regs[3] >> 24);
1283 printf(", %d bytes/line", regs[3] & 0xff);
1284 printf(", %d lines/tag", (regs[3] >> 8) & 0xff);
1285 print_AMD_assoc((regs[3] >> 16) & 0xff);
1286 if (cpu_exthigh >= 0x80000006) { /* K6-III only */
1287 do_cpuid(0x80000006, regs);
1288 printf("L2 internal cache: %d kbytes", regs[2] >> 16);
1289 printf(", %d bytes/line", regs[2] & 0xff);
1290 printf(", %d lines/tag", (regs[2] >> 8) & 0x0f);
1291 print_AMD_assoc((regs[2] >> 12) & 0x0f);
1294 if (((cpu_id & 0xf00) == 0x500)
1295 && (((cpu_id & 0x0f0) > 0x80)
1296 || (((cpu_id & 0x0f0) == 0x80)
1297 && (cpu_id & 0x00f) > 0x07))) {
1298 /* K6-2(new core [Stepping 8-F]), K6-III or later */
1299 amd_whcr = rdmsr(0xc0000082);
1300 if (!(amd_whcr & (0x3ff << 22))) {
1301 printf("Write Allocate Disable\n");
1303 printf("Write Allocate Enable Limit: %dM bytes\n",
1304 (u_int32_t)((amd_whcr & (0x3ff << 22)) >> 22) * 4);
1305 printf("Write Allocate 15-16M bytes: %s\n",
1306 (amd_whcr & (1 << 16)) ? "Enable" : "Disable");
1308 } else if (((cpu_id & 0xf00) == 0x500)
1309 && ((cpu_id & 0x0f0) > 0x50)) {
1310 /* K6, K6-2(old core) */
1311 amd_whcr = rdmsr(0xc0000082);
1312 if (!(amd_whcr & (0x7f << 1))) {
1313 printf("Write Allocate Disable\n");
1315 printf("Write Allocate Enable Limit: %dM bytes\n",
1316 (u_int32_t)((amd_whcr & (0x7f << 1)) >> 1) * 4);
1317 printf("Write Allocate 15-16M bytes: %s\n",
1318 (amd_whcr & 0x0001) ? "Enable" : "Disable");
1319 printf("Hardware Write Allocate Control: %s\n",
1320 (amd_whcr & 0x0100) ? "Enable" : "Disable");
1325 * Opteron Rev E shows a bug as in very rare occasions a read memory
1326 * barrier is not performed as expected if it is followed by a
1327 * non-atomic read-modify-write instruction.
1328 * As long as that bug pops up very rarely (intensive machine usage
1329 * on other operating systems generally generates one unexplainable
1330 * crash any 2 months) and as long as a model specific fix would be
1331 * impratical at this stage, print out a warning string if the broken
1332 * model and family are identified.
1334 if (CPUID_TO_FAMILY(cpu_id) == 0xf && CPUID_TO_MODEL(cpu_id) >= 0x20 &&
1335 CPUID_TO_MODEL(cpu_id) <= 0x3f)
1336 printf("WARNING: This architecture revision has known SMP "
1337 "hardware bugs which may cause random instability\n");
1341 print_INTEL_info(void)
1344 u_int rounds, regnum;
1345 u_int nwaycode, nway;
1347 if (cpu_high >= 2) {
1350 do_cpuid(0x2, regs);
1351 if (rounds == 0 && (rounds = (regs[0] & 0xff)) == 0)
1352 break; /* we have a buggy CPU */
1354 for (regnum = 0; regnum <= 3; ++regnum) {
1355 if (regs[regnum] & (1<<31))
1358 print_INTEL_TLB(regs[regnum] & 0xff);
1359 print_INTEL_TLB((regs[regnum] >> 8) & 0xff);
1360 print_INTEL_TLB((regs[regnum] >> 16) & 0xff);
1361 print_INTEL_TLB((regs[regnum] >> 24) & 0xff);
1363 } while (--rounds > 0);
1366 if (cpu_exthigh >= 0x80000006) {
1367 do_cpuid(0x80000006, regs);
1368 nwaycode = (regs[2] >> 12) & 0x0f;
1369 if (nwaycode >= 0x02 && nwaycode <= 0x08)
1370 nway = 1 << (nwaycode / 2);
1373 printf("\nL2 cache: %u kbytes, %u-way associative, %u bytes/line",
1374 (regs[2] >> 16) & 0xffff, nway, regs[2] & 0xff);
1381 print_INTEL_TLB(u_int data)
1389 printf("\nInstruction TLB: 4 KB pages, 4-way set associative, 32 entries");
1392 printf("\nInstruction TLB: 4 MB pages, fully associative, 2 entries");
1395 printf("\nData TLB: 4 KB pages, 4-way set associative, 64 entries");
1398 printf("\nData TLB: 4 MB Pages, 4-way set associative, 8 entries");
1401 printf("\n1st-level instruction cache: 8 KB, 4-way set associative, 32 byte line size");
1404 printf("\n1st-level instruction cache: 16 KB, 4-way set associative, 32 byte line size");
1407 printf("\n1st-level data cache: 8 KB, 2-way set associative, 32 byte line size");
1410 printf("\n1st-level data cache: 16 KB, 4-way set associative, 32 byte line size");
1413 printf("\n3rd-level cache: 512 KB, 4-way set associative, sectored cache, 64 byte line size");
1416 printf("\n3rd-level cache: 1 MB, 8-way set associative, sectored cache, 64 byte line size");
1419 printf("\n3rd-level cache: 2 MB, 8-way set associative, sectored cache, 64 byte line size");
1422 printf("\n3rd-level cache: 4 MB, 8-way set associative, sectored cache, 64 byte line size");
1425 printf("\n1st-level data cache: 32 KB, 8-way set associative, 64 byte line size");
1428 printf("\n1st-level instruction cache: 32 KB, 8-way set associative, 64 byte line size");
1431 printf("\n2nd-level cache: 128 KB, 4-way set associative, sectored cache, 64 byte line size");
1434 printf("\n2nd-level cache: 128 KB, 2-way set associative, sectored cache, 64 byte line size");
1437 printf("\n2nd-level cache: 256 KB, 4-way set associative, sectored cache, 64 byte line size");
1440 printf("\n2nd-level cache: 128 KB, 4-way set associative, 32 byte line size");
1443 printf("\n2nd-level cache: 256 KB, 4-way set associative, 32 byte line size");
1446 printf("\n2nd-level cache: 512 KB, 4-way set associative, 32 byte line size");
1449 printf("\n2nd-level cache: 1 MB, 4-way set associative, 32 byte line size");
1452 printf("\n2nd-level cache: 2 MB, 4-way set associative, 32 byte line size");
1455 printf("\n3rd-level cache: 4 MB, 4-way set associative, 64 byte line size");
1458 printf("\n3rd-level cache: 8 MB, 8-way set associative, 64 byte line size");
1461 printf("\nInstruction TLB: 4 KB, 2 MB or 4 MB pages, fully associative, 64 entries");
1464 printf("\nInstruction TLB: 4 KB, 2 MB or 4 MB pages, fully associative, 128 entries");
1467 printf("\nInstruction TLB: 4 KB, 2 MB or 4 MB pages, fully associative, 256 entries");
1470 printf("\nData TLB: 4 KB or 4 MB pages, fully associative, 64 entries");
1473 printf("\nData TLB: 4 KB or 4 MB pages, fully associative, 128 entries");
1476 printf("\nData TLB: 4 KB or 4 MB pages, fully associative, 256 entries");
1479 printf("\n1st-level data cache: 16 KB, 8-way set associative, sectored cache, 64 byte line size");
1482 printf("\n1st-level data cache: 8 KB, 4-way set associative, sectored cache, 64 byte line size");
1485 printf("\n1st-level data cache: 16 KB, 4-way set associative, sectored cache, 64 byte line size");
1488 printf("\n1st-level data cache: 32 KB, 4 way set associative, sectored cache, 64 byte line size");
1491 printf("\nTrace cache: 12K-uops, 8-way set associative");
1494 printf("\nTrace cache: 16K-uops, 8-way set associative");
1497 printf("\nTrace cache: 32K-uops, 8-way set associative");
1500 printf("\n2nd-level cache: 1 MB, 4-way set associative, 64-byte line size");
1503 printf("\n2nd-level cache: 128 KB, 8-way set associative, sectored cache, 64 byte line size");
1506 printf("\n2nd-level cache: 256 KB, 8-way set associative, sectored cache, 64 byte line size");
1509 printf("\n2nd-level cache: 512 KB, 8-way set associative, sectored cache, 64 byte line size");
1512 printf("\n2nd-level cache: 1 MB, 8-way set associative, sectored cache, 64 byte line size");
1515 printf("\n2nd-level cache: 2-MB, 8-way set associative, 64-byte line size");
1518 printf("\n2nd-level cache: 512-KB, 2-way set associative, 64-byte line size");
1521 printf("\n2nd-level cache: 256 KB, 8-way set associative, 32 byte line size");
1524 printf("\n2nd-level cache: 512 KB, 8-way set associative, 32 byte line size");
1527 printf("\n2nd-level cache: 1 MB, 8-way set associative, 32 byte line size");
1530 printf("\n2nd-level cache: 2 MB, 8-way set associative, 32 byte line size");
1533 printf("\n2nd-level cache: 512 KB, 4-way set associative, 64 byte line size");
1536 printf("\n2nd-level cache: 1 MB, 8-way set associative, 64 byte line size");
1539 printf("\nInstruction TLB: 4 KB Pages, 4-way set associative, 128 entries");
1542 printf("\nData TLB: 4 KB Pages, 4-way set associative, 128 entries");
1548 print_transmeta_info(void)
1550 u_int regs[4], nreg = 0;
1552 do_cpuid(0x80860000, regs);
1554 if (nreg >= 0x80860001) {
1555 do_cpuid(0x80860001, regs);
1556 printf(" Processor revision %u.%u.%u.%u\n",
1557 (regs[1] >> 24) & 0xff,
1558 (regs[1] >> 16) & 0xff,
1559 (regs[1] >> 8) & 0xff,
1562 if (nreg >= 0x80860002) {
1563 do_cpuid(0x80860002, regs);
1564 printf(" Code Morphing Software revision %u.%u.%u-%u-%u\n",
1565 (regs[1] >> 24) & 0xff,
1566 (regs[1] >> 16) & 0xff,
1567 (regs[1] >> 8) & 0xff,
1571 if (nreg >= 0x80860006) {
1573 do_cpuid(0x80860003, (u_int*) &info[0]);
1574 do_cpuid(0x80860004, (u_int*) &info[16]);
1575 do_cpuid(0x80860005, (u_int*) &info[32]);
1576 do_cpuid(0x80860006, (u_int*) &info[48]);
1578 printf(" %s\n", info);
1583 print_via_padlock_info(void)
1587 do_cpuid(0xc0000001, regs);
1588 printf("\n VIA Padlock Features=0x%b", regs[3],
1592 "\011AES-CTR" /* ACE2 */
1593 "\013SHA1,SHA256" /* PHE */