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-rw-r--r--perl-install/c/smp.c509
1 files changed, 0 insertions, 509 deletions
diff --git a/perl-install/c/smp.c b/perl-install/c/smp.c
deleted file mode 100644
index baf786cc6..000000000
--- a/perl-install/c/smp.c
+++ /dev/null
@@ -1,509 +0,0 @@
-/*
-[_Anarchy_(alan@lightning.swansea.uk.linux.org)] you should do one check
- though - if the board seems to be SMP and the CPU in /proc/cpuinfo is non
- intel dont install an SMP kernel - thats a dual pentium board with a cyrix
- or similar single cpu in it
-*/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <string.h>
-#include <errno.h>
-
-#ifdef __alpha__
-int alphaDetectSMP(void)
-{
- int issmp = 0;
- FILE *f;
-
- f = fopen("/proc/cpuinfo", "r");
- if (f) {
- char buff[1024];
-
- while (fgets (buff, 1024, f) != NULL) {
- if (!strncmp (buff, "cpus detected\t\t: ", 17)) {
- if (strtoul (buff + 17, NULL, 0) > 1)
- issmp = 1;
- break;
- }
- }
- fclose(f);
- } else
- return -1;
-
- return issmp;
-}
-#endif /* __alpha__ */
-
-#ifdef __sparc__
-int sparcDetectSMP(void)
-{
- int issmp = 0;
- FILE *f;
-
- f = fopen("/proc/cpuinfo", "r");
- if (f) {
- char buff[1024];
-
- while (fgets (buff, 1024, f) != NULL) {
- if (!strncmp (buff, "ncpus probed\t: ", 15)) {
- if (strtoul (buff + 15, NULL, 0) > 1)
- issmp = 1;
- break;
- }
- }
- fclose(f);
- } else
- return -1;
-
- return issmp;
-}
-#endif /* __sparc__ */
-
-/* just a placeholder for now - don't have an SMP machine
- need something in place to build - s.benedict */
-
-#ifdef __powerpc__
-int ppcDetectSMP(void)
-{
- int issmp = 0;
- FILE *f;
-
- f = fopen("/proc/cpuinfo", "r");
- if (f) {
- char buff[1024];
-
- while (fgets (buff, 1024, f) != NULL) {
- if (!strncmp (buff, "ncpus active\t: ", 15)) {
- if (strtoul (buff + 15, NULL, 0) > 1)
- issmp = 1;
- break;
- }
- }
- fclose(f);
- } else
- return -1;
-
- return issmp;
-}
-#endif /* __powerpc__ */
-
-#ifdef __i386__
-/*
- * Copyright (c) 1996, by Steve Passe
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. The name of the developer may NOT be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $Id$
- */
-
-/*
- * mptable.c
- */
-
-#define VMAJOR 2
-#define VMINOR 0
-#define VDELTA 12
-
-/*
- * this will cause the raw mp table to be dumped to /tmp/mpdump
- *
-#define RAW_DUMP
- */
-
-#define MP_SIG 0x5f504d5f /* _MP_ */
-#define EXTENDED_PROCESSING_READY
-#define OEM_PROCESSING_READY_NOT
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/types.h>
-
-#define LINUX 1
-#if LINUX
-typedef unsigned int vm_offset_t;
-#else
-#include <machine/types.h>
-#endif
-
-/* EBDA is @ 40:0e in real-mode terms */
-#define EBDA_POINTER 0x040e /* location of EBDA pointer */
-
-/* CMOS 'top of mem' is @ 40:13 in real-mode terms */
-#define TOPOFMEM_POINTER 0x0413 /* BIOS: base memory size */
-
-#define DEFAULT_TOPOFMEM 0xa0000
-
-#define BIOS_BASE 0xf0000
-#define BIOS_BASE2 0xe0000
-#define BIOS_SIZE 0x10000
-#define ONE_KBYTE 1024
-
-#define GROPE_AREA1 0x80000
-#define GROPE_AREA2 0x90000
-#define GROPE_SIZE 0x10000
-
-/* MP Floating Pointer Structure */
-typedef struct MPFPS {
- char signature[ 4 ];
- void* pap;
- u_char length;
- u_char spec_rev;
- u_char checksum;
- u_char mpfb1;
- u_char mpfb2;
- u_char mpfb3;
- u_char mpfb4;
- u_char mpfb5;
-} mpfps_t;
-
-/* MP Configuration Table Header */
-typedef struct MPCTH {
- char signature[ 4 ];
- u_short base_table_length;
- u_char spec_rev;
- u_char checksum;
- u_char oem_id[ 8 ];
- u_char product_id[ 12 ];
- void* oem_table_pointer;
- u_short oem_table_size;
- u_short entry_count;
- void* apic_address;
- u_short extended_table_length;
- u_char extended_table_checksum;
- u_char reserved;
-} mpcth_t;
-
-typedef struct PROCENTRY {
- u_char type;
- u_char apicID;
- u_char apicVersion;
- u_char cpuFlags;
- u_long cpuSignature;
- u_long featureFlags;
- u_long reserved1;
- u_long reserved2;
-} ProcEntry;
-
-#define PROCENTRY_FLAG_EN 0x01
-
-static void seekEntry( vm_offset_t addr );
-static void apic_probe( vm_offset_t* paddr, int* where );
-static void readEntry( void* entry, int size );
-
-/* global data */
-static int pfd; /* physical /dev/mem fd */
-static int verbose = 0;
-static int grope = 0;
-
-static int
-readType()
-{
- u_char type;
-
- if ( read( pfd, &type, sizeof( u_char ) ) != sizeof( u_char ) ) {
- perror( "type read" );
- fprintf( stderr, "\npfd: %d", pfd );
- fflush( stderr );
- exit( 1 );
- }
-
- if ( lseek( pfd, -1, SEEK_CUR ) < 0 ) {
- perror( "type seek" );
- exit( 1 );
- }
-
- return (int)type;
-}
-
-static int intelDetectSMP(void)
-{
- vm_offset_t paddr;
- int where;
- mpfps_t mpfps;
- int rc = 0;
- int ncpus = 0;
-
- /* open physical memory for access to MP structures */
- if ( (pfd = open( "/dev/mem", O_RDONLY )) < 0 ) {
- return 0;
- }
-
- /* probe for MP structures */
- apic_probe( &paddr, &where );
- if ( where <= 0 )
- return 0;
-
- seekEntry( paddr );
- readEntry( &mpfps, sizeof( mpfps_t ) );
-
- if (mpfps.mpfb1)
- /* old style */
- rc = 1;
- else {
- /* go to the config table */
- mpcth_t cth;
- int count, i;
-
- paddr = (vm_offset_t) mpfps.pap;
- seekEntry( paddr );
- readEntry( &cth, sizeof( cth ) );
- /* if we don't have any entries, the kernel sure
- won't be able to set up mp. Needs at least one entry
- for smp kernel */
- if (cth.entry_count <= 1) {
- close (pfd);
- return 0;
- }
- count = cth.entry_count;
- for (i = 0; i < count; i++) {
- if ( readType() == 0 ) {
- ProcEntry entry;
- readEntry( &entry, sizeof( entry ) );
- if (entry.cpuFlags & PROCENTRY_FLAG_EN)
- ncpus++;
- }
- }
- if (ncpus > 1)
- rc = 1;
- }
-
- close (pfd);
- return rc;
-}
-
-/*
- * set PHYSICAL address of MP floating pointer structure
- */
-#define NEXT(X) ((X) += 4)
-static void
-apic_probe( vm_offset_t* paddr, int* where )
-{
- /*
- * c rewrite of apic_probe() by Jack F. Vogel
- */
-
- int x;
- u_short segment;
- vm_offset_t target;
- u_int buffer[ BIOS_SIZE / sizeof( int ) ];
-
- if ( verbose )
- printf( "\n" );
-
- /* search Extended Bios Data Area, if present */
- if ( verbose )
- printf( " looking for EBDA pointer @ 0x%04x, ", EBDA_POINTER );
- seekEntry( (vm_offset_t)EBDA_POINTER );
- readEntry( &segment, 2 );
- if ( segment ) { /* search EBDA */
- target = (vm_offset_t)segment << 4;
- if ( verbose )
- printf( "found, searching EBDA @ 0x%08x\n", target );
- seekEntry( target );
- readEntry( buffer, ONE_KBYTE );
-
- for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
- if ( buffer[ x ] == MP_SIG ) {
- *where = 1;
- *paddr = (x * sizeof( unsigned int )) + target;
- return;
- }
- }
- }
- else {
- if ( verbose )
- printf( "NOT found\n" );
- }
-
- /* read CMOS for real top of mem */
- seekEntry( (vm_offset_t)TOPOFMEM_POINTER );
- readEntry( &segment, 2 );
- --segment; /* less ONE_KBYTE */
- target = segment * 1024;
- if ( verbose )
- printf( " searching CMOS 'top of mem' @ 0x%08x (%dK)\n",
- target, segment );
- seekEntry( target );
- readEntry( buffer, ONE_KBYTE );
-
- for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
- if ( buffer[ x ] == MP_SIG ) {
- *where = 2;
- *paddr = (x * sizeof( unsigned int )) + target;
- return;
- }
- }
-
- /* we don't necessarily believe CMOS, check base of the last 1K of 640K */
- if ( target != (DEFAULT_TOPOFMEM - 1024)) {
- target = (DEFAULT_TOPOFMEM - 1024);
- if ( verbose )
- printf( " searching default 'top of mem' @ 0x%08x (%dK)\n",
- target, (target / 1024) );
- seekEntry( target );
- readEntry( buffer, ONE_KBYTE );
-
- for ( x = 0; x < ONE_KBYTE / sizeof ( unsigned int ); NEXT(x) ) {
- if ( buffer[ x ] == MP_SIG ) {
- *where = 3;
- *paddr = (x * sizeof( unsigned int )) + target;
- return;
- }
- }
- }
-
- /* search the BIOS */
- if ( verbose )
- printf( " searching BIOS @ 0x%08x\n", BIOS_BASE );
- seekEntry( BIOS_BASE );
- readEntry( buffer, BIOS_SIZE );
-
- for ( x = 0; x < BIOS_SIZE / sizeof( unsigned int ); NEXT(x) ) {
- if ( buffer[ x ] == MP_SIG ) {
- *where = 4;
- *paddr = (x * sizeof( unsigned int )) + BIOS_BASE;
- return;
- }
- }
-
- /* search the extended BIOS */
- if ( verbose )
- printf( " searching extended BIOS @ 0x%08x\n", BIOS_BASE2 );
- seekEntry( BIOS_BASE2 );
- readEntry( buffer, BIOS_SIZE );
-
- for ( x = 0; x < BIOS_SIZE / sizeof( unsigned int ); NEXT(x) ) {
- if ( buffer[ x ] == MP_SIG ) {
- *where = 5;
- *paddr = (x * sizeof( unsigned int )) + BIOS_BASE2;
- return;
- }
- }
-
- if ( grope ) {
- /* search additional memory */
- target = GROPE_AREA1;
- if ( verbose )
- printf( " groping memory @ 0x%08x\n", target );
- seekEntry( target );
- readEntry( buffer, GROPE_SIZE );
-
- for ( x = 0; x < GROPE_SIZE / sizeof( unsigned int ); NEXT(x) ) {
- if ( buffer[ x ] == MP_SIG ) {
- *where = 6;
- *paddr = (x * sizeof( unsigned int )) + GROPE_AREA1;
- return;
- }
- }
-
- target = GROPE_AREA2;
- if ( verbose )
- printf( " groping memory @ 0x%08x\n", target );
- seekEntry( target );
- readEntry( buffer, GROPE_SIZE );
-
- for ( x = 0; x < GROPE_SIZE / sizeof( unsigned int ); NEXT(x) ) {
- if ( buffer[ x ] == MP_SIG ) {
- *where = 7;
- *paddr = (x * sizeof( unsigned int )) + GROPE_AREA2;
- return;
- }
- }
- }
-
- *where = 0;
- *paddr = (vm_offset_t)0;
-}
-
-
-/*
- *
- */
-static void
-seekEntry( vm_offset_t addr )
-{
- if ( lseek( pfd, (off_t)addr, SEEK_SET ) < 0 ) {
- return;
- perror( "/dev/mem seek" );
- exit( 1 );
- }
-}
-
-
-/*
- *
- */
-static void
-readEntry( void* entry, int size )
-{
- if ( read( pfd, entry, size ) != size ) {
- return;
- perror( "readEntry" );
- exit( 1 );
- }
-}
-
-
-#endif /* __i386__ */
-
-int detectSMP(void)
-{
- static int isSMP = -1;
-
- if (isSMP != -1)
- return isSMP;
-
-#ifdef __i386__
- return isSMP = intelDetectSMP();
-#elif __sparc__
- return isSMP = sparcDetectSMP();
-#elif __alpha__
- return isSMP = alphaDetectSMP();
-#elif __powerpc__
- return isSMP = ppcDetectSMP();
-#elif __ia64__
- /* TODO: Update to check against /proc/pal/cpuX */
- return isSMP = 1;
-#elif __x86_64__
- /* TODO: Update when SMP machines are there */
- return isSMP = 0;
-#else
- #error unknown architecture
-#endif
-}
-
-#if TEST
-int main() {
- if (detectSMP())
- printf("has smp\n");
- else
- printf("no smp\n");
-}
-#endif
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