2 * Copyright (c) 1996, by Steve Passe
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. The name of the developer may NOT be used to endorse or promote products
11 * derived from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * $FreeBSD: src/usr.sbin/mptable/mptable.c,v 1.12.2.3 2000/12/11 01:03:34 obrien Exp $
26 * $DragonFly: src/usr.sbin/mptable/mptable.c,v 1.4 2008/04/20 13:44:26 swildner Exp $
37 #define MP_SIG 0x5f504d5f /* _MP_ */
38 #define EXTENDED_PROCESSING_READY
39 #define OEM_PROCESSING_READY_NOT
41 #include <sys/types.h>
51 "\n-------------------------------------------------------------------------------\n"
54 "\n===============================================================================\n"
56 /* EBDA is @ 40:0e in real-mode terms */
57 #define EBDA_POINTER 0x040e /* location of EBDA pointer */
59 /* CMOS 'top of mem' is @ 40:13 in real-mode terms */
60 #define TOPOFMEM_POINTER 0x0413 /* BIOS: base memory size */
62 #define DEFAULT_TOPOFMEM 0xa0000
64 #define BIOS_BASE 0xf0000
65 #define BIOS_BASE2 0xe0000
66 #define BIOS_SIZE 0x10000
67 #define ONE_KBYTE 1024
69 #define GROPE_AREA1 0x80000
70 #define GROPE_AREA2 0x90000
71 #define GROPE_SIZE 0x10000
73 #define PROCENTRY_FLAG_EN 0x01
74 #define PROCENTRY_FLAG_BP 0x02
75 #define IOAPICENTRY_FLAG_EN 0x01
87 UNKNOWN_BUSTYPE = 0xff
90 typedef struct BUSTYPENAME {
95 static busTypeName busTypeTable[] =
100 { UNKNOWN_BUSTYPE, "---" },
101 { UNKNOWN_BUSTYPE, "---" },
103 { UNKNOWN_BUSTYPE, "---" },
104 { UNKNOWN_BUSTYPE, "---" },
105 { UNKNOWN_BUSTYPE, "---" },
106 { UNKNOWN_BUSTYPE, "---" },
107 { UNKNOWN_BUSTYPE, "---" },
108 { UNKNOWN_BUSTYPE, "---" },
110 { UNKNOWN_BUSTYPE, "---" },
111 { UNKNOWN_BUSTYPE, "---" },
112 { UNKNOWN_BUSTYPE, "---" },
113 { UNKNOWN_BUSTYPE, "---" },
114 { UNKNOWN_BUSTYPE, "---" },
115 { UNKNOWN_BUSTYPE, "---" }
118 char* whereStrings[] = {
119 "Extended BIOS Data Area",
120 "BIOS top of memory",
121 "Default top of memory",
128 typedef struct TABLE_ENTRY {
134 tableEntry basetableEntryTypes[] =
136 { 0, 20, "Processor" },
138 { 2, 8, "I/O APIC" },
140 { 4, 8, "Local INT" }
143 tableEntry extendedtableEntryTypes[] =
145 { 128, 20, "System Address Space" },
146 { 129, 8, "Bus Hierarchy" },
147 { 130, 8, "Compatibility Bus Address" }
150 /* MP Floating Pointer Structure */
151 typedef struct MPFPS {
164 /* MP Configuration Table Header */
165 typedef struct MPCTH {
167 u_short base_table_length;
171 u_char product_id[ 12 ];
172 void* oem_table_pointer;
173 u_short oem_table_size;
176 u_short extended_table_length;
177 u_char extended_table_checksum;
182 typedef struct PROCENTRY {
193 typedef struct BUSENTRY {
199 typedef struct IOAPICENTRY {
207 typedef struct INTENTRY {
219 * extended entry type structures
222 typedef struct SASENTRY {
227 u_int64_t addressBase;
228 u_int64_t addressLength;
232 typedef struct BHDENTRY {
238 u_char reserved[ 3 ];
242 typedef struct CBASMENTRY {
247 u_int predefinedRange;
252 static void apic_probe( vm_offset_t* paddr, int* where );
254 static void MPConfigDefault( int featureByte );
256 static void MPFloatingPointer( vm_offset_t paddr, int where, mpfps_t* mpfps );
257 static void MPConfigTableHeader( void* pap );
259 static int readType( void );
260 static void seekEntry( vm_offset_t addr );
261 static void readEntry( void* entry, int size );
263 static void processorEntry( void );
264 static void busEntry( void );
265 static void ioApicEntry( void );
266 static void intEntry( void );
268 static void sasEntry( void );
269 static void bhdEntry( void );
270 static void cbasmEntry( void );
272 static void doDmesg( void );
273 static void pnstr( char* s, int c );
276 int pfd; /* physical /dev/mem fd */
294 fprintf( stderr, "usage: mptable [-dmesg] [-verbose] [-grope] [-raw] [-help]\n" );
302 main( int argc, char *argv[] )
312 /* announce ourselves */
315 printf( "MPTable, version %d.%d.%d\n", VMAJOR, VMINOR, VDELTA );
317 while ((ch = getopt(argc, argv, "d:g:h:r:v:")) != -1) {
320 if ( strcmp( optarg, "mesg") == 0 )
326 if ( strcmp( optarg, "elp") == 0 )
330 if ( strcmp( optarg, "rope") == 0 )
334 if ( strcmp (optarg, "aw") == 0 )
338 if ( strcmp( optarg, "erbose") == 0 )
349 /* open physical memory for access to MP structures */
350 if ( (pfd = open( _PATH_MEM, O_RDONLY )) < 0 )
351 err( 1, "mem open" );
353 /* probe for MP structures */
354 apic_probe( &paddr, &where );
356 fprintf( stderr, "\n MP FPS NOT found,\n" );
357 fprintf( stderr, " suggest trying -grope option!!!\n\n" );
362 printf( "\n MP FPS found in %s @ physical addr: 0x%08x\n",
363 whereStrings[ where - 1 ], paddr );
367 /* analyze the MP Floating Pointer Structure */
368 MPFloatingPointer( paddr, where, &mpfps );
372 /* check whether an MP config table exists */
373 if ( (defaultConfig = mpfps.mpfb1) )
374 MPConfigDefault( defaultConfig );
376 MPConfigTableHeader( mpfps.pap );
378 /* do a dmesg output */
389 * set PHYSICAL address of MP floating pointer structure
391 #define NEXT(X) ((X) += 4)
393 apic_probe( vm_offset_t* paddr, int* where )
396 * c rewrite of apic_probe() by Jack F. Vogel
402 u_int buffer[ BIOS_SIZE / sizeof( int ) ];
407 /* search Extended Bios Data Area, if present */
409 printf( " looking for EBDA pointer @ 0x%04x, ", EBDA_POINTER );
410 seekEntry( (vm_offset_t)EBDA_POINTER );
411 readEntry( &segment, 2 );
412 if ( segment ) { /* search EBDA */
413 target = (vm_offset_t)segment << 4;
415 printf( "found, searching EBDA @ 0x%08x\n", target );
417 readEntry( buffer, ONE_KBYTE );
419 for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
420 if ( buffer[ x ] == MP_SIG ) {
422 *paddr = (x * sizeof( unsigned int )) + target;
429 printf( "NOT found\n" );
432 /* read CMOS for real top of mem */
433 seekEntry( (vm_offset_t)TOPOFMEM_POINTER );
434 readEntry( &segment, 2 );
435 --segment; /* less ONE_KBYTE */
436 target = segment * 1024;
438 printf( " searching CMOS 'top of mem' @ 0x%08x (%dK)\n",
441 readEntry( buffer, ONE_KBYTE );
443 for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
444 if ( buffer[ x ] == MP_SIG ) {
446 *paddr = (x * sizeof( unsigned int )) + target;
451 /* we don't necessarily believe CMOS, check base of the last 1K of 640K */
452 if ( target != (DEFAULT_TOPOFMEM - 1024)) {
453 target = (DEFAULT_TOPOFMEM - 1024);
455 printf( " searching default 'top of mem' @ 0x%08x (%dK)\n",
456 target, (target / 1024) );
458 readEntry( buffer, ONE_KBYTE );
460 for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
461 if ( buffer[ x ] == MP_SIG ) {
463 *paddr = (x * sizeof( unsigned int )) + target;
469 /* search the BIOS */
471 printf( " searching BIOS @ 0x%08x\n", BIOS_BASE );
472 seekEntry( BIOS_BASE );
473 readEntry( buffer, BIOS_SIZE );
475 for ( x = 0; x < BIOS_SIZE / sizeof( unsigned int ); NEXT(x) ) {
476 if ( buffer[ x ] == MP_SIG ) {
478 *paddr = (x * sizeof( unsigned int )) + BIOS_BASE;
483 /* search the extended BIOS */
485 printf( " searching extended BIOS @ 0x%08x\n", BIOS_BASE2 );
486 seekEntry( BIOS_BASE2 );
487 readEntry( buffer, BIOS_SIZE );
489 for ( x = 0; x < BIOS_SIZE / sizeof( unsigned int ); NEXT(x) ) {
490 if ( buffer[ x ] == MP_SIG ) {
492 *paddr = (x * sizeof( unsigned int )) + BIOS_BASE2;
498 /* search additional memory */
499 target = GROPE_AREA1;
501 printf( " groping memory @ 0x%08x\n", target );
503 readEntry( buffer, GROPE_SIZE );
505 for ( x = 0; x < GROPE_SIZE / sizeof( unsigned int ); NEXT(x) ) {
506 if ( buffer[ x ] == MP_SIG ) {
508 *paddr = (x * sizeof( unsigned int )) + GROPE_AREA1;
513 target = GROPE_AREA2;
515 printf( " groping memory @ 0x%08x\n", target );
517 readEntry( buffer, GROPE_SIZE );
519 for ( x = 0; x < GROPE_SIZE / sizeof( unsigned int ); NEXT(x) ) {
520 if ( buffer[ x ] == MP_SIG ) {
522 *paddr = (x * sizeof( unsigned int )) + GROPE_AREA2;
529 *paddr = (vm_offset_t)0;
537 MPFloatingPointer( vm_offset_t paddr, int where, mpfps_t* mpfps )
540 /* read in mpfps structure*/
542 readEntry( mpfps, sizeof( mpfps_t ) );
544 /* show its contents */
545 printf( "MP Floating Pointer Structure:\n\n" );
547 printf( " location:\t\t\t" );
554 printf( "BIOS base memory\n" );
557 printf( "DEFAULT base memory (639K)\n" );
563 printf( "Extended BIOS\n" );
567 printf( "NOT found!\n" );
570 printf( "BOGUS!\n" );
573 printf( " physical address:\t\t0x%08x\n", paddr );
575 printf( " signature:\t\t\t'" );
576 pnstr( mpfps->signature, 4 );
579 printf( " length:\t\t\t%d bytes\n", mpfps->length * 16 );
580 printf( " version:\t\t\t1.%1d\n", mpfps->spec_rev );
581 printf( " checksum:\t\t\t0x%02x\n", mpfps->checksum );
583 /* bits 0:6 are RESERVED */
584 if ( mpfps->mpfb2 & 0x7f ) {
585 printf( " warning, MP feature byte 2: 0x%02x\n", mpfps->mpfb2 );
589 printf( " mode:\t\t\t\t%s\n", (mpfps->mpfb2 & 0x80) ?
590 "PIC" : "Virtual Wire" );
592 /* MP feature bytes 3-5 are expected to be ZERO */
594 printf( " warning, MP feature byte 3 NONZERO!\n" );
596 printf( " warning, MP feature byte 4 NONZERO!\n" );
598 printf( " warning, MP feature byte 5 NONZERO!\n" );
606 MPConfigDefault( int featureByte )
608 printf( " MP default config type: %d\n\n", featureByte );
609 switch ( featureByte ) {
611 printf( " bus: ISA, APIC: 82489DX\n" );
614 printf( " bus: EISA, APIC: 82489DX\n" );
617 printf( " bus: EISA, APIC: 82489DX\n" );
620 printf( " bus: MCA, APIC: 82489DX\n" );
623 printf( " bus: ISA+PCI, APIC: Integrated\n" );
626 printf( " bus: EISA+PCI, APIC: Integrated\n" );
629 printf( " bus: MCA+PCI, APIC: Integrated\n" );
632 printf( " future type\n" );
636 switch ( featureByte ) {
649 printf( " future type\n" );
663 MPConfigTableHeader( void* pap )
673 printf( "MP Configuration Table Header MISSING!\n" );
677 /* convert physical address to virtual address */
678 paddr = (vm_offset_t)pap;
680 /* read in cth structure */
682 readEntry( &cth, sizeof( cth ) );
684 printf( "MP Config Table Header:\n\n" );
686 printf( " physical address:\t\t0x%08x\n", pap );
688 printf( " signature:\t\t\t'" );
689 pnstr( cth.signature, 4 );
692 printf( " base table length:\t\t%d\n", cth.base_table_length );
694 printf( " version:\t\t\t1.%1d\n", cth.spec_rev );
695 printf( " checksum:\t\t\t0x%02x\n", cth.checksum );
697 printf( " OEM ID:\t\t\t'" );
698 pnstr( cth.oem_id, 8 );
701 printf( " Product ID:\t\t\t'" );
702 pnstr( cth.product_id, 12 );
705 printf( " OEM table pointer:\t\t0x%08x\n", cth.oem_table_pointer );
706 printf( " OEM table size:\t\t%d\n", cth.oem_table_size );
708 printf( " entry count:\t\t\t%d\n", cth.entry_count );
710 printf( " local APIC address:\t\t0x%08x\n", cth.apic_address );
712 printf( " extended table length:\t%d\n", cth.extended_table_length );
713 printf( " extended table checksum:\t%d\n", cth.extended_table_checksum );
715 totalSize = cth.base_table_length - sizeof( struct MPCTH );
716 count = cth.entry_count;
720 printf( "MP Config Base Table Entries:\n\n" );
722 /* initialze tables */
723 for ( x = 0; x < 16; ++x ) {
724 busses[ x ] = apics[ x ] = 0xff;
732 /* process all the CPUs */
733 printf( "--\nProcessors:\tAPIC ID\tVersion\tState"
734 "\t\tFamily\tModel\tStep\tFlags\n" );
735 for ( t = totalSize, c = count; c; c-- ) {
736 if ( readType() == 0 )
738 totalSize -= basetableEntryTypes[ 0 ].length;
741 /* process all the busses */
742 printf( "--\nBus:\t\tBus ID\tType\n" );
743 for ( t = totalSize, c = count; c; c-- ) {
744 if ( readType() == 1 )
746 totalSize -= basetableEntryTypes[ 1 ].length;
749 /* process all the apics */
750 printf( "--\nI/O APICs:\tAPIC ID\tVersion\tState\t\tAddress\n" );
751 for ( t = totalSize, c = count; c; c-- ) {
752 if ( readType() == 2 )
754 totalSize -= basetableEntryTypes[ 2 ].length;
757 /* process all the I/O Ints */
758 printf( "--\nI/O Ints:\tType\tPolarity Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
759 for ( t = totalSize, c = count; c; c-- ) {
760 if ( readType() == 3 )
762 totalSize -= basetableEntryTypes[ 3 ].length;
765 /* process all the Local Ints */
766 printf( "--\nLocal Ints:\tType\tPolarity Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
767 for ( t = totalSize, c = count; c; c-- ) {
768 if ( readType() == 4 )
770 totalSize -= basetableEntryTypes[ 4 ].length;
774 #if defined( EXTENDED_PROCESSING_READY )
775 /* process any extended data */
776 if ( (totalSize = cth.extended_table_length) ) {
779 printf( "MP Config Extended Table Entries:\n\n" );
781 while ( totalSize > 0 ) {
782 switch ( type = readType() ) {
793 printf( "Extended Table HOSED!\n" );
797 totalSize -= extendedtableEntryTypes[ type-128 ].length;
800 #endif /* EXTENDED_PROCESSING_READY */
802 /* process any OEM data */
803 if ( cth.oem_table_pointer && (cth.oem_table_size > 0) ) {
804 #if defined( OEM_PROCESSING_READY )
805 # error your on your own here!
806 /* convert OEM table pointer to virtual address */
807 poemtp = (vm_offset_t)cth.oem_table_pointer;
809 /* read in oem table structure */
810 if ( (oemdata = (void*)malloc( cth.oem_table_size )) == NULL )
811 err( 1, "oem malloc" );
814 readEntry( oemdata, cth.oem_table_size );
820 printf( "\nyou need to modify the source to handle OEM data!\n\n" );
821 #endif /* OEM_PROCESSING_READY */
828 u_char dumpbuf[ 4096 ];
830 ofd = open( "/tmp/mpdump", O_CREAT | O_RDWR );
832 readEntry( dumpbuf, 1024 );
833 write( ofd, dumpbuf, 1024 );
847 if ( read( pfd, &type, sizeof( u_char ) ) != sizeof( u_char ) )
848 err( 1, "type read; pfd: %d", pfd );
850 if ( lseek( pfd, -1, SEEK_CUR ) < 0 )
851 err( 1, "type seek" );
861 seekEntry( vm_offset_t addr )
863 if ( lseek( pfd, (off_t)addr, SEEK_SET ) < 0 )
864 err( 1, "%s seek", _PATH_MEM );
872 readEntry( void* entry, int size )
874 if ( read( pfd, entry, size ) != size )
875 err( 1, "readEntry" );
880 processorEntry( void )
884 /* read it into local memory */
885 readEntry( &entry, sizeof( entry ) );
890 printf( "\t\t%2d", entry.apicID );
891 printf( "\t 0x%2x", entry.apicVersion );
894 (entry.cpuFlags & PROCENTRY_FLAG_BP) ? "BSP" : "AP",
895 (entry.cpuFlags & PROCENTRY_FLAG_EN) ? "usable" : "unusable" );
897 printf( "\t %d\t %d\t %d",
898 (entry.cpuSignature >> 8) & 0x0f,
899 (entry.cpuSignature >> 4) & 0x0f,
900 entry.cpuSignature & 0x0f );
902 printf( "\t 0x%04x\n", entry.featureFlags );
910 lookupBusType( char* name )
914 for ( x = 0; x < MAX_BUSTYPE; ++x )
915 if ( strcmp( busTypeTable[ x ].name, name ) == 0 )
916 return busTypeTable[ x ].type;
918 return UNKNOWN_BUSTYPE;
930 /* read it into local memory */
931 readEntry( &entry, sizeof( entry ) );
936 printf( "\t\t%2d", entry.busID );
937 printf( "\t " ); pnstr( entry.busType, 6 ); printf( "\n" );
939 for ( x = 0; x < 6; ++x ) {
940 if ( (c = entry.busType[ x ]) == ' ' )
945 busses[ entry.busID ] = lookupBusType( name );
954 /* read it into local memory */
955 readEntry( &entry, sizeof( entry ) );
960 printf( "\t\t%2d", entry.apicID );
961 printf( "\t 0x%02x", entry.apicVersion );
963 (entry.apicFlags & IOAPICENTRY_FLAG_EN) ? "usable" : "unusable" );
964 printf( "\t\t 0x%x\n", entry.apicAddress );
966 apics[ entry.apicID ] = entry.apicID;
971 "INT", "NMI", "SMI", "ExtINT"
974 char* polarityMode[] = {
975 "conforms", "active-hi", "reserved", "active-lo"
977 char* triggerMode[] = {
978 "conforms", "edge", "reserved", "level"
986 /* read it into local memory */
987 readEntry( &entry, sizeof( entry ) );
990 if ( (int)entry.type == 3 )
993 printf( "\t\t%s", intTypes[ (int)entry.intType ] );
995 printf( "\t%9s", polarityMode[ (int)entry.intFlags & 0x03 ] );
996 printf( "%12s", triggerMode[ ((int)entry.intFlags >> 2) & 0x03 ] );
998 printf( "\t %5d", (int)entry.srcBusID );
999 if ( busses[ (int)entry.srcBusID ] == PCI )
1001 ((int)entry.srcBusIRQ >> 2) & 0x1f,
1002 ((int)entry.srcBusIRQ & 0x03) + 'A' );
1004 printf( "\t %3d", (int)entry.srcBusIRQ );
1005 printf( "\t %6d", (int)entry.dstApicID );
1006 printf( "\t %3d\n", (int)entry.dstApicINT );
1015 /* read it into local memory */
1016 readEntry( &entry, sizeof( entry ) );
1018 printf( "--\n%s\n", extendedtableEntryTypes[entry.type - 128].name );
1019 printf( " bus ID: %d", entry.busID );
1020 printf( " address type: " );
1021 switch ( entry.addressType ) {
1023 printf( "I/O address\n" );
1026 printf( "memory address\n" );
1029 printf( "prefetch address\n" );
1032 printf( "UNKNOWN type\n" );
1036 printf( " address base: 0x%qx\n", entry.addressBase );
1037 printf( " address range: 0x%qx\n", entry.addressLength );
1046 /* read it into local memory */
1047 readEntry( &entry, sizeof( entry ) );
1049 printf( "--\n%s\n", extendedtableEntryTypes[entry.type - 128].name );
1050 printf( " bus ID: %d", entry.busID );
1051 printf( " bus info: 0x%02x", entry.busInfo );
1052 printf( " parent bus ID: %d\n", entry.busParent );
1061 /* read it into local memory */
1062 readEntry( &entry, sizeof( entry ) );
1064 printf( "--\n%s\n", extendedtableEntryTypes[entry.type - 128].name );
1065 printf( " bus ID: %d", entry.busID );
1066 printf( " address modifier: %s\n", (entry.addressMod & 0x01) ?
1067 "subtract" : "add" );
1068 printf( " predefined range: 0x%08x\n", entry.predefinedRange );
1080 printf( "dmesg output:\n\n" );
1090 pnstr( char* s, int c )
1092 char string[ MAXPNSTR + 1 ];
1096 strncpy( string, s, c );
1098 printf( "%s", string );