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 1.2 2003/06/17 04:29:57 dillon Exp $
38 * this will cause the raw mp table to be dumped to /tmp/mpdump
43 #define MP_SIG 0x5f504d5f /* _MP_ */
44 #define EXTENDED_PROCESSING_READY
45 #define OEM_PROCESSING_READY_NOT
47 #include <sys/types.h>
57 "\n-------------------------------------------------------------------------------\n"
60 "\n===============================================================================\n"
62 /* EBDA is @ 40:0e in real-mode terms */
63 #define EBDA_POINTER 0x040e /* location of EBDA pointer */
65 /* CMOS 'top of mem' is @ 40:13 in real-mode terms */
66 #define TOPOFMEM_POINTER 0x0413 /* BIOS: base memory size */
68 #define DEFAULT_TOPOFMEM 0xa0000
70 #define BIOS_BASE 0xf0000
71 #define BIOS_BASE2 0xe0000
72 #define BIOS_SIZE 0x10000
73 #define ONE_KBYTE 1024
75 #define GROPE_AREA1 0x80000
76 #define GROPE_AREA2 0x90000
77 #define GROPE_SIZE 0x10000
79 #define PROCENTRY_FLAG_EN 0x01
80 #define PROCENTRY_FLAG_BP 0x02
81 #define IOAPICENTRY_FLAG_EN 0x01
93 UNKNOWN_BUSTYPE = 0xff
96 typedef struct BUSTYPENAME {
101 static busTypeName busTypeTable[] =
104 { CBUSII, "CBUSII" },
106 { UNKNOWN_BUSTYPE, "---" },
107 { UNKNOWN_BUSTYPE, "---" },
109 { UNKNOWN_BUSTYPE, "---" },
110 { UNKNOWN_BUSTYPE, "---" },
111 { UNKNOWN_BUSTYPE, "---" },
112 { UNKNOWN_BUSTYPE, "---" },
113 { UNKNOWN_BUSTYPE, "---" },
114 { UNKNOWN_BUSTYPE, "---" },
116 { UNKNOWN_BUSTYPE, "---" },
117 { UNKNOWN_BUSTYPE, "---" },
118 { UNKNOWN_BUSTYPE, "---" },
119 { UNKNOWN_BUSTYPE, "---" },
120 { UNKNOWN_BUSTYPE, "---" },
121 { UNKNOWN_BUSTYPE, "---" }
124 char* whereStrings[] = {
125 "Extended BIOS Data Area",
126 "BIOS top of memory",
127 "Default top of memory",
134 typedef struct TABLE_ENTRY {
140 tableEntry basetableEntryTypes[] =
142 { 0, 20, "Processor" },
144 { 2, 8, "I/O APIC" },
146 { 4, 8, "Local INT" }
149 tableEntry extendedtableEntryTypes[] =
151 { 128, 20, "System Address Space" },
152 { 129, 8, "Bus Heirarchy" },
153 { 130, 8, "Compatibility Bus Address" }
156 /* MP Floating Pointer Structure */
157 typedef struct MPFPS {
170 /* MP Configuration Table Header */
171 typedef struct MPCTH {
173 u_short base_table_length;
177 u_char product_id[ 12 ];
178 void* oem_table_pointer;
179 u_short oem_table_size;
182 u_short extended_table_length;
183 u_char extended_table_checksum;
188 typedef struct PROCENTRY {
199 typedef struct BUSENTRY {
205 typedef struct IOAPICENTRY {
213 typedef struct INTENTRY {
225 * extended entry type structures
228 typedef struct SASENTRY {
233 u_int64_t addressBase;
234 u_int64_t addressLength;
238 typedef struct BHDENTRY {
244 u_char reserved[ 3 ];
248 typedef struct CBASMENTRY {
253 u_int predefinedRange;
258 static void apic_probe( vm_offset_t* paddr, int* where );
260 static void MPConfigDefault( int featureByte );
262 static void MPFloatingPointer( vm_offset_t paddr, int where, mpfps_t* mpfps );
263 static void MPConfigTableHeader( void* pap );
265 static int readType( void );
266 static void seekEntry( vm_offset_t addr );
267 static void readEntry( void* entry, int size );
269 static void processorEntry( void );
270 static void busEntry( void );
271 static void ioApicEntry( void );
272 static void intEntry( void );
274 static void sasEntry( void );
275 static void bhdEntry( void );
276 static void cbasmEntry( void );
278 static void doDmesg( void );
279 static void pnstr( char* s, int c );
282 int pfd; /* physical /dev/mem fd */
299 fprintf( stderr, "usage: mptable [-dmesg] [-verbose] [-grope] [-help]\n" );
307 main( int argc, char *argv[] )
317 /* announce ourselves */
320 printf( "MPTable, version %d.%d.%d\n", VMAJOR, VMINOR, VDELTA );
322 while ((ch = getopt(argc, argv, "d:g:h:v:")) != -1) {
325 if ( strcmp( optarg, "mesg") == 0 )
331 if ( strcmp( optarg, "elp") == 0 )
335 if ( strcmp( optarg, "rope") == 0 )
339 if ( strcmp( optarg, "erbose") == 0 )
351 /* open physical memory for access to MP structures */
352 if ( (pfd = open( _PATH_MEM, O_RDONLY )) < 0 )
353 err( 1, "mem open" );
355 /* probe for MP structures */
356 apic_probe( &paddr, &where );
358 fprintf( stderr, "\n MP FPS NOT found,\n" );
359 fprintf( stderr, " suggest trying -grope option!!!\n\n" );
364 printf( "\n MP FPS found in %s @ physical addr: 0x%08x\n",
365 whereStrings[ where - 1 ], paddr );
369 /* analyze the MP Floating Pointer Structure */
370 MPFloatingPointer( paddr, where, &mpfps );
374 /* check whether an MP config table exists */
375 if ( (defaultConfig = mpfps.mpfb1) )
376 MPConfigDefault( defaultConfig );
378 MPConfigTableHeader( mpfps.pap );
380 /* do a dmesg output */
391 * set PHYSICAL address of MP floating pointer structure
393 #define NEXT(X) ((X) += 4)
395 apic_probe( vm_offset_t* paddr, int* where )
398 * c rewrite of apic_probe() by Jack F. Vogel
404 u_int buffer[ BIOS_SIZE / sizeof( int ) ];
409 /* search Extended Bios Data Area, if present */
411 printf( " looking for EBDA pointer @ 0x%04x, ", EBDA_POINTER );
412 seekEntry( (vm_offset_t)EBDA_POINTER );
413 readEntry( &segment, 2 );
414 if ( segment ) { /* search EBDA */
415 target = (vm_offset_t)segment << 4;
417 printf( "found, searching EBDA @ 0x%08x\n", target );
419 readEntry( buffer, ONE_KBYTE );
421 for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
422 if ( buffer[ x ] == MP_SIG ) {
424 *paddr = (x * sizeof( unsigned int )) + target;
431 printf( "NOT found\n" );
434 /* read CMOS for real top of mem */
435 seekEntry( (vm_offset_t)TOPOFMEM_POINTER );
436 readEntry( &segment, 2 );
437 --segment; /* less ONE_KBYTE */
438 target = segment * 1024;
440 printf( " searching CMOS 'top of mem' @ 0x%08x (%dK)\n",
443 readEntry( buffer, ONE_KBYTE );
445 for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
446 if ( buffer[ x ] == MP_SIG ) {
448 *paddr = (x * sizeof( unsigned int )) + target;
453 /* we don't necessarily believe CMOS, check base of the last 1K of 640K */
454 if ( target != (DEFAULT_TOPOFMEM - 1024)) {
455 target = (DEFAULT_TOPOFMEM - 1024);
457 printf( " searching default 'top of mem' @ 0x%08x (%dK)\n",
458 target, (target / 1024) );
460 readEntry( buffer, ONE_KBYTE );
462 for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
463 if ( buffer[ x ] == MP_SIG ) {
465 *paddr = (x * sizeof( unsigned int )) + target;
471 /* search the BIOS */
473 printf( " searching BIOS @ 0x%08x\n", BIOS_BASE );
474 seekEntry( BIOS_BASE );
475 readEntry( buffer, BIOS_SIZE );
477 for ( x = 0; x < BIOS_SIZE / sizeof( unsigned int ); NEXT(x) ) {
478 if ( buffer[ x ] == MP_SIG ) {
480 *paddr = (x * sizeof( unsigned int )) + BIOS_BASE;
485 /* search the extended BIOS */
487 printf( " searching extended BIOS @ 0x%08x\n", BIOS_BASE2 );
488 seekEntry( BIOS_BASE2 );
489 readEntry( buffer, BIOS_SIZE );
491 for ( x = 0; x < BIOS_SIZE / sizeof( unsigned int ); NEXT(x) ) {
492 if ( buffer[ x ] == MP_SIG ) {
494 *paddr = (x * sizeof( unsigned int )) + BIOS_BASE2;
500 /* search additional memory */
501 target = GROPE_AREA1;
503 printf( " groping memory @ 0x%08x\n", target );
505 readEntry( buffer, GROPE_SIZE );
507 for ( x = 0; x < GROPE_SIZE / sizeof( unsigned int ); NEXT(x) ) {
508 if ( buffer[ x ] == MP_SIG ) {
510 *paddr = (x * sizeof( unsigned int )) + GROPE_AREA1;
515 target = GROPE_AREA2;
517 printf( " groping memory @ 0x%08x\n", target );
519 readEntry( buffer, GROPE_SIZE );
521 for ( x = 0; x < GROPE_SIZE / sizeof( unsigned int ); NEXT(x) ) {
522 if ( buffer[ x ] == MP_SIG ) {
524 *paddr = (x * sizeof( unsigned int )) + GROPE_AREA2;
531 *paddr = (vm_offset_t)0;
539 MPFloatingPointer( vm_offset_t paddr, int where, mpfps_t* mpfps )
542 /* read in mpfps structure*/
544 readEntry( mpfps, sizeof( mpfps_t ) );
546 /* show its contents */
547 printf( "MP Floating Pointer Structure:\n\n" );
549 printf( " location:\t\t\t" );
556 printf( "BIOS base memory\n" );
559 printf( "DEFAULT base memory (639K)\n" );
565 printf( "Extended BIOS\n" );
569 printf( "NOT found!\n" );
572 printf( "BOGUS!\n" );
575 printf( " physical address:\t\t0x%08x\n", paddr );
577 printf( " signature:\t\t\t'" );
578 pnstr( mpfps->signature, 4 );
581 printf( " length:\t\t\t%d bytes\n", mpfps->length * 16 );
582 printf( " version:\t\t\t1.%1d\n", mpfps->spec_rev );
583 printf( " checksum:\t\t\t0x%02x\n", mpfps->checksum );
585 /* bits 0:6 are RESERVED */
586 if ( mpfps->mpfb2 & 0x7f ) {
587 printf( " warning, MP feature byte 2: 0x%02x\n", mpfps->mpfb2 );
591 printf( " mode:\t\t\t\t%s\n", (mpfps->mpfb2 & 0x80) ?
592 "PIC" : "Virtual Wire" );
594 /* MP feature bytes 3-5 are expected to be ZERO */
596 printf( " warning, MP feature byte 3 NONZERO!\n" );
598 printf( " warning, MP feature byte 4 NONZERO!\n" );
600 printf( " warning, MP feature byte 5 NONZERO!\n" );
608 MPConfigDefault( int featureByte )
610 printf( " MP default config type: %d\n\n", featureByte );
611 switch ( featureByte ) {
613 printf( " bus: ISA, APIC: 82489DX\n" );
616 printf( " bus: EISA, APIC: 82489DX\n" );
619 printf( " bus: EISA, APIC: 82489DX\n" );
622 printf( " bus: MCA, APIC: 82489DX\n" );
625 printf( " bus: ISA+PCI, APIC: Integrated\n" );
628 printf( " bus: EISA+PCI, APIC: Integrated\n" );
631 printf( " bus: MCA+PCI, APIC: Integrated\n" );
634 printf( " future type\n" );
638 switch ( featureByte ) {
651 printf( " future type\n" );
665 MPConfigTableHeader( void* pap )
675 printf( "MP Configuration Table Header MISSING!\n" );
679 /* convert physical address to virtual address */
680 paddr = (vm_offset_t)pap;
682 /* read in cth structure */
684 readEntry( &cth, sizeof( cth ) );
686 printf( "MP Config Table Header:\n\n" );
688 printf( " physical address:\t\t0x%08x\n", pap );
690 printf( " signature:\t\t\t'" );
691 pnstr( cth.signature, 4 );
694 printf( " base table length:\t\t%d\n", cth.base_table_length );
696 printf( " version:\t\t\t1.%1d\n", cth.spec_rev );
697 printf( " checksum:\t\t\t0x%02x\n", cth.checksum );
699 printf( " OEM ID:\t\t\t'" );
700 pnstr( cth.oem_id, 8 );
703 printf( " Product ID:\t\t\t'" );
704 pnstr( cth.product_id, 12 );
707 printf( " OEM table pointer:\t\t0x%08x\n", cth.oem_table_pointer );
708 printf( " OEM table size:\t\t%d\n", cth.oem_table_size );
710 printf( " entry count:\t\t\t%d\n", cth.entry_count );
712 printf( " local APIC address:\t\t0x%08x\n", cth.apic_address );
714 printf( " extended table length:\t%d\n", cth.extended_table_length );
715 printf( " extended table checksum:\t%d\n", cth.extended_table_checksum );
717 totalSize = cth.base_table_length - sizeof( struct MPCTH );
718 count = cth.entry_count;
722 printf( "MP Config Base Table Entries:\n\n" );
724 /* initialze tables */
725 for ( x = 0; x < 16; ++x ) {
726 busses[ x ] = apics[ x ] = 0xff;
734 /* process all the CPUs */
735 printf( "--\nProcessors:\tAPIC ID\tVersion\tState"
736 "\t\tFamily\tModel\tStep\tFlags\n" );
737 for ( t = totalSize, c = count; c; c-- ) {
738 if ( readType() == 0 )
740 totalSize -= basetableEntryTypes[ 0 ].length;
743 /* process all the busses */
744 printf( "--\nBus:\t\tBus ID\tType\n" );
745 for ( t = totalSize, c = count; c; c-- ) {
746 if ( readType() == 1 )
748 totalSize -= basetableEntryTypes[ 1 ].length;
751 /* process all the apics */
752 printf( "--\nI/O APICs:\tAPIC ID\tVersion\tState\t\tAddress\n" );
753 for ( t = totalSize, c = count; c; c-- ) {
754 if ( readType() == 2 )
756 totalSize -= basetableEntryTypes[ 2 ].length;
759 /* process all the I/O Ints */
760 printf( "--\nI/O Ints:\tType\tPolarity Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
761 for ( t = totalSize, c = count; c; c-- ) {
762 if ( readType() == 3 )
764 totalSize -= basetableEntryTypes[ 3 ].length;
767 /* process all the Local Ints */
768 printf( "--\nLocal Ints:\tType\tPolarity Trigger\tBus ID\t IRQ\tAPIC ID\tPIN#\n" );
769 for ( t = totalSize, c = count; c; c-- ) {
770 if ( readType() == 4 )
772 totalSize -= basetableEntryTypes[ 4 ].length;
776 #if defined( EXTENDED_PROCESSING_READY )
777 /* process any extended data */
778 if ( (totalSize = cth.extended_table_length) ) {
781 printf( "MP Config Extended Table Entries:\n\n" );
783 while ( totalSize > 0 ) {
784 switch ( type = readType() ) {
795 printf( "Extended Table HOSED!\n" );
799 totalSize -= extendedtableEntryTypes[ type-128 ].length;
802 #endif /* EXTENDED_PROCESSING_READY */
804 /* process any OEM data */
805 if ( cth.oem_table_pointer && (cth.oem_table_size > 0) ) {
806 #if defined( OEM_PROCESSING_READY )
807 # error your on your own here!
808 /* convert OEM table pointer to virtual address */
809 poemtp = (vm_offset_t)cth.oem_table_pointer;
811 /* read in oem table structure */
812 if ( (oemdata = (void*)malloc( cth.oem_table_size )) == NULL )
813 err( 1, "oem malloc" );
816 readEntry( oemdata, cth.oem_table_size );
822 printf( "\nyou need to modify the source to handle OEM data!\n\n" );
823 #endif /* OEM_PROCESSING_READY */
828 #if defined( RAW_DUMP )
831 u_char dumpbuf[ 4096 ];
833 ofd = open( "/tmp/mpdump", O_CREAT | O_RDWR );
835 readEntry( dumpbuf, 1024 );
836 write( ofd, dumpbuf, 1024 );
839 #endif /* RAW_DUMP */
851 if ( read( pfd, &type, sizeof( u_char ) ) != sizeof( u_char ) )
852 err( 1, "type read; pfd: %d", pfd );
854 if ( lseek( pfd, -1, SEEK_CUR ) < 0 )
855 err( 1, "type seek" );
865 seekEntry( vm_offset_t addr )
867 if ( lseek( pfd, (off_t)addr, SEEK_SET ) < 0 )
868 err( 1, "%s seek", _PATH_MEM );
876 readEntry( void* entry, int size )
878 if ( read( pfd, entry, size ) != size )
879 err( 1, "readEntry" );
884 processorEntry( void )
888 /* read it into local memory */
889 readEntry( &entry, sizeof( entry ) );
894 printf( "\t\t%2d", entry.apicID );
895 printf( "\t 0x%2x", entry.apicVersion );
898 (entry.cpuFlags & PROCENTRY_FLAG_BP) ? "BSP" : "AP",
899 (entry.cpuFlags & PROCENTRY_FLAG_EN) ? "usable" : "unusable" );
901 printf( "\t %d\t %d\t %d",
902 (entry.cpuSignature >> 8) & 0x0f,
903 (entry.cpuSignature >> 4) & 0x0f,
904 entry.cpuSignature & 0x0f );
906 printf( "\t 0x%04x\n", entry.featureFlags );
914 lookupBusType( char* name )
918 for ( x = 0; x < MAX_BUSTYPE; ++x )
919 if ( strcmp( busTypeTable[ x ].name, name ) == 0 )
920 return busTypeTable[ x ].type;
922 return UNKNOWN_BUSTYPE;
934 /* read it into local memory */
935 readEntry( &entry, sizeof( entry ) );
940 printf( "\t\t%2d", entry.busID );
941 printf( "\t " ); pnstr( entry.busType, 6 ); printf( "\n" );
943 for ( x = 0; x < 6; ++x ) {
944 if ( (c = entry.busType[ x ]) == ' ' )
949 busses[ entry.busID ] = lookupBusType( name );
958 /* read it into local memory */
959 readEntry( &entry, sizeof( entry ) );
964 printf( "\t\t%2d", entry.apicID );
965 printf( "\t 0x%02x", entry.apicVersion );
967 (entry.apicFlags & IOAPICENTRY_FLAG_EN) ? "usable" : "unusable" );
968 printf( "\t\t 0x%x\n", entry.apicAddress );
970 apics[ entry.apicID ] = entry.apicID;
975 "INT", "NMI", "SMI", "ExtINT"
978 char* polarityMode[] = {
979 "conforms", "active-hi", "reserved", "active-lo"
981 char* triggerMode[] = {
982 "conforms", "edge", "reserved", "level"
990 /* read it into local memory */
991 readEntry( &entry, sizeof( entry ) );
994 if ( (int)entry.type == 3 )
997 printf( "\t\t%s", intTypes[ (int)entry.intType ] );
999 printf( "\t%9s", polarityMode[ (int)entry.intFlags & 0x03 ] );
1000 printf( "%12s", triggerMode[ ((int)entry.intFlags >> 2) & 0x03 ] );
1002 printf( "\t %5d", (int)entry.srcBusID );
1003 if ( busses[ (int)entry.srcBusID ] == PCI )
1005 ((int)entry.srcBusIRQ >> 2) & 0x1f,
1006 ((int)entry.srcBusIRQ & 0x03) + 'A' );
1008 printf( "\t %3d", (int)entry.srcBusIRQ );
1009 printf( "\t %6d", (int)entry.dstApicID );
1010 printf( "\t %3d\n", (int)entry.dstApicINT );
1019 /* read it into local memory */
1020 readEntry( &entry, sizeof( entry ) );
1022 printf( "--\n%s\n", extendedtableEntryTypes[entry.type - 128].name );
1023 printf( " bus ID: %d", entry.busID );
1024 printf( " address type: " );
1025 switch ( entry.addressType ) {
1027 printf( "I/O address\n" );
1030 printf( "memory address\n" );
1033 printf( "prefetch address\n" );
1036 printf( "UNKNOWN type\n" );
1040 printf( " address base: 0x%qx\n", entry.addressBase );
1041 printf( " address range: 0x%qx\n", entry.addressLength );
1050 /* read it into local memory */
1051 readEntry( &entry, sizeof( entry ) );
1053 printf( "--\n%s\n", extendedtableEntryTypes[entry.type - 128].name );
1054 printf( " bus ID: %d", entry.busID );
1055 printf( " bus info: 0x%02x", entry.busInfo );
1056 printf( " parent bus ID: %d\n", entry.busParent );
1065 /* read it into local memory */
1066 readEntry( &entry, sizeof( entry ) );
1068 printf( "--\n%s\n", extendedtableEntryTypes[entry.type - 128].name );
1069 printf( " bus ID: %d", entry.busID );
1070 printf( " address modifier: %s\n", (entry.addressMod & 0x01) ?
1071 "subtract" : "add" );
1072 printf( " predefined range: 0x%08x\n", entry.predefinedRange );
1084 printf( "dmesg output:\n\n" );
1094 pnstr( char* s, int c )
1096 char string[ MAXPNSTR + 1 ];
1100 strncpy( string, s, c );
1102 printf( "%s", string );