look for "NR_CPUS limit of 1 reached" instead of looking MP tables by hand, or using DMI info (often broken)

1 files changed, 0 insertions, 516 deletions

diff --git a/perl-install/c/smp.c b/perl-install/c/smp.c
deleted file mode 100644
index 886321e06..000000000
--- a/perl-install/c/smp.c
+++ /dev/null
@@ -1,516 +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__ */
-
-#if defined(__i386__) || defined(__x86_64__)
-/*
- * 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
-
-typedef unsigned char	u8;
-typedef unsigned short	u16;
-typedef unsigned int	u32;
-typedef vm_offset_t		addr_t;
-
-/* 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 ];
-    addr_t      pap;
-    u8          length;
-    u8          spec_rev;
-    u8          checksum;
-    u8          mpfb1;
-    u8          mpfb2;
-    u8          mpfb3;
-    u8          mpfb4;
-    u8          mpfb5;
-} mpfps_t;
-
-/* MP Configuration Table Header */
-typedef struct MPCTH {
-    char        signature[ 4 ];
-    u16         base_table_length;
-    u8          spec_rev;
-    u8          checksum;
-    u8          oem_id[ 8 ];
-    u8          product_id[ 12 ];
-    addr_t      oem_table_pointer;
-    u16         oem_table_size;
-    u16         entry_count;
-    addr_t      apic_address;
-    u16         extended_table_length;
-    u8          extended_table_checksum;
-    u8          reserved;
-} mpcth_t;
-
-typedef struct PROCENTRY {
-    u8          type;
-    u8          apicID;
-    u8          apicVersion;
-    u8          cpuFlags;
-    u32         cpuSignature;
-    u32         featureFlags;
-    u32         reserved1;
-    u32         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;
-}
-
-extern int intelDetectSMP(void);
-
-// old detection
-static int intelDetectSMP_mptable(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 = 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() || intelDetectSMP_mptable();
-#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__
-	return isSMP = intelDetectSMP() || intelDetectSMP_mptable();
-#else
-    #error unknown architecture
-#endif
-}
-
-#if TEST
-int main() {
-  if (detectSMP())
-    printf("has smp\n");
-  else
-    printf("no smp\n");
-}
-#endif