70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
|
/*
|
||
|
|
* inteltool - dump all registers on an Intel CPU + chipset based system.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 by coresystems GmbH
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; version 2 of the License.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <sys/mman.h>
|
||
|
|
|
||
|
|
#include "inteltool.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* (G)MCH MMIO Config Space
|
||
|
|
*/
|
||
|
|
int print_mchbar(struct pci_dev *nb)
|
||
|
|
{
|
||
|
|
int i, size = (16 * 1024);
|
||
|
|
volatile uint8_t *mchbar;
|
||
|
|
uint32_t mchbar_phys;
|
||
|
|
|
||
|
|
printf("\n============= MCHBAR ============\n\n");
|
||
|
|
|
||
|
|
switch (nb->device_id) {
|
||
|
|
case PCI_DEVICE_ID_INTEL_82945GM:
|
||
|
|
mchbar_phys = pci_read_long(nb, 0x44) & 0xfffffffe;
|
||
|
|
break;
|
||
|
|
case 0x1234: // Dummy for non-existent functionality
|
||
|
|
printf("This northbrigde does not have MCHBAR.\n");
|
||
|
|
return 1;
|
||
|
|
default:
|
||
|
|
printf("Error: Dumping MCHBAR on this northbridge is not (yet) supported.\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
mchbar = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
|
||
|
|
fd_mem, (off_t) mchbar_phys);
|
||
|
|
|
||
|
|
if (mchbar == MAP_FAILED) {
|
||
|
|
perror("Error mapping MCHBAR");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
printf("MCHBAR = 0x%08x (MEM)\n\n", mchbar_phys);
|
||
|
|
|
||
|
|
for (i = 0; i < size; i += 4) {
|
||
|
|
if (*(uint32_t *)(mchbar + i))
|
||
|
|
printf("0x%04x: 0x%08x\n", i, *(uint32_t *)(mchbar+i));
|
||
|
|
}
|
||
|
|
|
||
|
|
munmap((void *)mchbar, size);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|