Add new revised inteltool that dumps all kinds of chipset information and drop old

gpio_dump utility.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3304 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 797 insertions, 0 deletions

diff --git a/util/inteltool/inteltool.c b/util/inteltool/inteltool.c
new file mode 100644
index 0000000000..c9d2418c63
--- /dev/null
+++ b/util/inteltool/inteltool.c
@@ -0,0 +1,797 @@
+/*
+ * inteltool - dump all registers on an Intel CPU + chipset based system.
+ *
+ * Copyright (C) 2008 by coresystems GmbH 
+ *  written by Stefan Reinauer <stepan@coresystems.de> 
+ * 
+ * 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 <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <getopt.h>
+#include <sys/mman.h>
+#include <sys/io.h>
+#include <pci/pci.h>
+
+#define INTELTOOL_VERSION "1.0"
+
+/* Tested Chipsets: */
+#define PCI_VENDOR_ID_INTEL		0x8086
+#define PCI_DEVICE_ID_INTEL_ICH7	0x27b8
+#define PCI_DEVICE_ID_INTEL_82945GM	0x27a0
+
+#define ARRAY_SIZE(a) ((int)(sizeof(a) / sizeof((a)[0])))
+
+int fd_mem;
+int fd_msr;
+
+typedef struct { uint32_t hi, lo; } msr_t;
+typedef struct { uint16_t addr; int size; char *name; } io_register_t;
+
+int print_gpios(struct pci_dev *sb)
+{
+	int i;
+	uint16_t gpiobase;
+
+	io_register_t ich7_gpio_registers[] =  {
+		{ 0x00, 4, "GPIO_USE_SEL" },
+		{ 0x04, 4, "GP_IO_SEL" },
+		{ 0x08, 4, "RESERVED" },
+		{ 0x0c, 4, "GP_LVL" },
+		{ 0x10, 4, "RESERVED" },
+		{ 0x14, 4, "RESERVED" },
+		{ 0x18, 4, "GPO_BLINK" },
+		{ 0x1c, 4, "RESERVED" },
+		{ 0x20, 4, "RESERVED" },
+		{ 0x24, 4, "RESERVED" },
+		{ 0x28, 4, "RESERVED" },
+		{ 0x2c, 4, "GPI_INV" },
+		{ 0x30, 4, "GPIO_USE_SEL2" },
+		{ 0x34, 4, "GP_IO_SEL2" },
+		{ 0x38, 4, "GP_LVL2" },
+		{ 0x3C, 4, "RESERVED" }
+	};
+
+	printf("\n============= GPIOS =============\n\n");
+
+	switch (sb->device_id) {
+	case PCI_DEVICE_ID_INTEL_ICH7:
+		gpiobase = pci_read_word(sb, 0x48) & 0xfffc;
+		break;
+	case 0x1234: // Dummy for non-existent functionality
+		printf("Error: This southbridge does not have GPIOBASE.\n");
+		return 1;
+	default:
+		printf("Error: Dumping GPIOs on this southbridge is not (yet) supported.\n");
+		return 1;
+	}
+
+	printf("GPIOBASE = 0x%04x (IO)\n\n", gpiobase);
+
+	for (i=0; i<ARRAY_SIZE(ich7_gpio_registers); i++) {
+		switch (ich7_gpio_registers[i].size) {
+		case 4:
+			printf("gpiobase+0x%04x: 0x%08x (%s)\n", 
+				ich7_gpio_registers[i].addr,
+				inl(gpiobase+ich7_gpio_registers[i].addr),
+				ich7_gpio_registers[i].name);
+			break;
+		case 2:
+			printf("gpiobase+0x%04x: 0x%04x     (%s)\n", 
+				ich7_gpio_registers[i].addr,
+				inw(gpiobase+ich7_gpio_registers[i].addr),
+				ich7_gpio_registers[i].name);
+			break;
+		case 1:
+			printf("gpiobase+0x%04x: 0x%02x       (%s)\n", 
+				ich7_gpio_registers[i].addr,
+				inb(gpiobase+ich7_gpio_registers[i].addr),
+				ich7_gpio_registers[i].name);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+int print_rcba(struct pci_dev *sb)
+{
+	int i, size=0x4000;
+	volatile uint8_t *rcba;
+	uint32_t rcba_phys;
+
+	printf("\n============= RCBA ==============\n\n");
+
+	switch (sb->device_id) {
+	case PCI_DEVICE_ID_INTEL_ICH7:
+		rcba_phys = pci_read_long(sb, 0xf0) & 0xfffffffe;  
+		break;
+	case 0x1234: // Dummy for non-existent functionality
+		printf("Error: This southbridge does not have RCBA.\n");
+		return 1;
+	default:
+		printf("Error: Dumping RCBA on this southbridge is not (yet) supported.\n");
+		return 1;
+	}
+
+	rcba = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+		    fd_mem, (off_t) rcba_phys);
+	
+	if (rcba == MAP_FAILED) {
+		perror("Error mapping RCBA");
+		exit(1);
+	}
+
+	printf("RCBA = 0x%08x (MEM)\n\n", rcba_phys);
+
+	for (i=0; i<size; i+=4) {
+		if(*(uint32_t *)(rcba+i))
+			printf("0x%04x: 0x%08x\n", i, *(uint32_t *)(rcba+i));
+	}
+
+	munmap((void *) rcba, size);
+	return 0;
+}
+
+int print_pmbase(struct pci_dev *sb)
+{
+	int i, size=0x80;
+	uint16_t pmbase;
+
+	printf("\n============= PMBASE ============\n\n");
+
+	switch (sb->device_id) {
+	case PCI_DEVICE_ID_INTEL_ICH7:
+		pmbase = pci_read_word(sb, 0x40) & 0xfffc; 
+		break;
+	case 0x1234: // Dummy for non-existent functionality
+		printf("Error: This southbridge does not have PMBASE.\n");
+		return 1;
+	default:
+		printf("Error: Dumping PMBASE on this southbridge is not (yet) supported.\n");
+		return 1;
+	}
+
+	printf("PMBASE = 0x%04x (IO)\n\n", pmbase);
+
+	for (i=0; i<size; i+=4) {
+		printf("pmbase+0x%04x: 0x%08x\n", i, inl(pmbase+i));
+	}
+
+	return 0;
+}
+
+/*
+ * (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("Error: 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;
+}
+
+/*
+ * Egress Port Root Complex MMIO configuration space
+ */
+int print_epbar(struct pci_dev *nb)
+{
+	int i, size=4096;
+	volatile uint8_t *epbar;
+	uint32_t epbar_phys;
+
+	printf("\n============= EPBAR =============\n\n");
+
+	switch (nb->device_id) {
+	case PCI_DEVICE_ID_INTEL_82945GM:
+		epbar_phys = pci_read_long(nb, 0x40) & 0xfffffffe; 
+		break;
+	case 0x1234: // Dummy for non-existent functionality
+		printf("Error: This northbrigde does not have EPBAR.\n");
+		return 1;
+	default:
+		printf("Error: Dumping EPBAR on this northbridge is not (yet) supported.\n");
+		return 1;
+	}
+
+	epbar = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+		    fd_mem, (off_t) epbar_phys );
+	
+	if (epbar == MAP_FAILED) {
+		perror("Error mapping EPBAR");
+		exit(1);
+	}
+
+	printf("EPBAR = 0x%08x (MEM)\n\n", epbar_phys);
+	for (i=0; i<size; i+=4) {
+		if(*(uint32_t *)(epbar+i))
+			printf("0x%04x: 0x%08x\n", i, *(uint32_t *)(epbar+i));
+	}
+
+	munmap((void *) epbar, size);
+	return 0;
+}
+
+
+/*
+ * MCH-ICH Serial Interconnect Ingress Root Complex  MMIO configuration space
+ */
+int print_dmibar(struct pci_dev *nb)
+{
+	int i, size=4096;
+	volatile uint8_t *dmibar;
+	uint32_t dmibar_phys;
+
+	printf("\n============= DMIBAR ============\n\n");
+
+	switch (nb->device_id) {
+	case PCI_DEVICE_ID_INTEL_82945GM:
+		dmibar_phys = pci_read_long(nb, 0x4c) & 0xfffffffe; 
+		break;
+	case 0x1234: // Dummy for non-existent functionality
+		printf("Error: This northbrigde does not have DMIBAR.\n");
+		return 1;
+	default:
+		printf("Error: Dumping DMIBAR on this northbridge is not (yet) supported.\n");
+		return 1;
+	}
+
+	dmibar = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+		    fd_mem, (off_t) dmibar_phys );
+	
+	if (dmibar == MAP_FAILED) {
+		perror("Error mapping DMIBAR");
+		exit(1);
+	}
+
+	printf("DMIBAR = 0x%08x (MEM)\n\n", dmibar_phys);
+	for (i=0; i<size; i+=4) {
+		if(*(uint32_t *)(dmibar+i))
+			printf("0x%04x: 0x%08x\n", i, *(uint32_t *)(dmibar+i));
+	}
+
+	munmap((void *) dmibar, size);
+	return 0;
+}
+
+/*
+ * PCIe MMIO configuration space
+ */
+int print_pciexbar(struct pci_dev *nb)
+{
+	uint32_t pciexbar_reg;
+	uint32_t pciexbar_phys;
+	volatile uint8_t *pciexbar;
+	int max_busses, devbase, i;
+	int bus, dev, fn;
+
+	printf("========= PCIEXBAR ========\n\n");
+
+	switch (nb->device_id) {
+	case PCI_DEVICE_ID_INTEL_82945GM:
+		pciexbar_reg = pci_read_long(nb, 0x48); 
+		break;
+	case 0x1234: // Dummy for non-existent functionality
+		printf("Error: This northbrigde does not have PCIEXBAR.\n");
+		return 1;
+	default:
+		printf("Error: Dumping PCIEXBAR on this northbridge is not (yet) supported.\n");
+		return 1;
+	}
+
+	if( !(pciexbar_reg & (1 << 0))) {
+		printf("PCIEXBAR register is disabled.\n");
+		return 0;
+	}
+
+	switch ((pciexbar_reg >> 1) & 3) {
+	case 0: // 256MB
+		pciexbar_phys = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28));
+		max_busses = 256;
+		break;
+	case 1: // 128M
+		pciexbar_phys = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
+		max_busses = 128;
+		break;
+	case 2: // 64M
+		pciexbar_phys = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26));
+		max_busses = 64;
+		break;
+	default: // RSVD
+		printf("Undefined Address base. Bailing out\n");
+		return 1;
+	}	
+
+	printf("PCIEXBAR: 0x%08x\n", pciexbar_phys);
+
+	pciexbar = mmap(0, (max_busses * 1024 * 1024), PROT_WRITE | PROT_READ, MAP_SHARED,
+		    fd_mem, (off_t) pciexbar_phys );
+	
+	if (pciexbar == MAP_FAILED) {
+		perror("Error mapping PCIEXBAR");
+		exit(1);
+	}
+	
+	for (bus = 0; bus < max_busses; bus++) {
+		for (dev = 0; dev < 32; dev++) {
+			for (fn = 0; fn < 8; fn++) {
+				devbase = (bus * 1024 * 1024) + (dev * 32 * 1024) + (fn * 4 * 1024);
+
+				if (*(uint16_t *)(pciexbar + devbase) == 0xffff)
+					continue;
+				
+				/* This is a heuristics. Anyone got a better check? */
+				if( (*(uint32_t *)(pciexbar + devbase + 256) == 0xffffffff) &&
+					(*(uint32_t *)(pciexbar + devbase + 512) == 0xffffffff) ) {
+#if DEBUG
+					printf("Skipped non-PCIe device %02x:%02x.%01x\n", bus, dev, fn);
+#endif
+					continue;
+				}
+
+				printf("\nPCIe %02x:%02x.%01x extended config space:", bus, dev, fn);
+				for (i=0; i<4096; i++) {
+					if((i % 0x10) == 0)
+						printf("\n%04x:", i);
+					printf(" %02x", *(pciexbar+devbase+i));
+				}
+				printf("\n");
+			}
+		}
+	}
+
+	munmap((void *) pciexbar, (max_busses * 1024 * 1024));
+
+	return 0;
+}
+
+int msr_readerror = 0;
+
+msr_t rdmsr(int addr)
+{
+	unsigned char buf[8];
+	msr_t msr = { 0xffffffff, 0xffffffff };
+
+	if (lseek(fd_msr, (off_t) addr, SEEK_SET) == -1) {
+		perror("Could not lseek() to MSR");
+		close(fd_msr);
+		exit(1);
+	}
+
+	if (read(fd_msr, buf, 8) == 8) {
+		msr.lo = *(uint32_t *)buf;
+		msr.hi = *(uint32_t *)(buf+4);
+
+		return msr;
+	}
+
+	if (errno == 5) {
+		printf(" (*)"); // Not all bits of the MSR could be read
+		msr_readerror = 1;
+	} else {
+		// A severe error.
+		perror("Could not read() MSR");
+		close(fd_msr);
+		exit(1);
+	}
+
+	return msr;
+}
+
+int print_intel_core_msrs(void)
+{
+	unsigned int i, core;
+	msr_t msr;
+
+
+#define IA32_PLATFORM_ID		0x0017
+#define EBL_CR_POWERON			0x002a
+#define FSB_CLK_STS			0x00cd
+#define IA32_TIME_STAMP_COUNTER		0x0010
+#define IA32_APIC_BASE			0x001b
+
+	typedef struct {
+		int number;
+		char *name;
+	} msr_entry_t;
+
+	msr_entry_t global_msrs[] = {
+		{ 0x0017, "IA32_PLATFORM_ID" },
+		{ 0x002a, "EBL_CR_POWERON" },
+		{ 0x00cd, "FSB_CLOCK_STS" },
+		{ 0x00ce, "FSB_CLOCK_VCC" },
+		{ 0x00e2, "CLOCK_CST_CONFIG_CONTROL" },
+		{ 0x00e3, "PMG_IO_BASE_ADDR" },
+		{ 0x00e4, "PMG_IO_CAPTURE_ADDR" },
+		{ 0x00ee, "EXT_CONFIG" },
+		{ 0x011e, "BBL_CR_CTL3" },
+		{ 0x0194, "CLOCK_FLEX_MAX" },
+		{ 0x0198, "IA32_PERF_STATUS" },
+		{ 0x01a0, "IA32_MISC_ENABLES" },
+		{ 0x01aa, "PIC_SENS_CFG" },
+		{ 0x0400, "IA32_MC0_CTL" },
+		{ 0x0401, "IA32_MC0_STATUS" },
+		{ 0x0402, "IA32_MC0_ADDR" },
+		//{ 0x0403, "IA32_MC0_MISC" }, // Seems to be RO
+		{ 0x040c, "IA32_MC4_CTL" },
+		{ 0x040d, "IA32_MC4_STATUS" },
+		{ 0x040e, "IA32_MC4_ADDR" },
+		//{ 0x040f, "IA32_MC4_MISC" } // Seems to be RO
+	};
+
+	msr_entry_t per_core_msrs[] = {
+		{ 0x0010, "IA32_TIME_STAMP_COUNTER" },
+		{ 0x001b, "IA32_APIC_BASE" },
+		{ 0x003a, "IA32_FEATURE_CONTROL" },
+		{ 0x003f, "IA32_TEMPERATURE_OFFSET" },
+		//{ 0x0079, "IA32_BIOS_UPDT_TRIG" }, // Seems to be RO
+		{ 0x008b, "IA32_BIOS_SIGN_ID" },
+		{ 0x00e7, "IA32_MPERF" },
+		{ 0x00e8, "IA32_APERF" },
+		{ 0x00fe, "IA32_MTRRCAP" },
+		{ 0x015f, "DTS_CAL_CTRL" },
+		{ 0x0179, "IA32_MCG_CAP" },
+		{ 0x017a, "IA32_MCG_STATUS" },
+		{ 0x0199, "IA32_PERF_CONTROL" },
+		{ 0x019a, "IA32_CLOCK_MODULATION" },
+		{ 0x019b, "IA32_THERM_INTERRUPT" },
+		{ 0x019c, "IA32_THERM_STATUS" },
+		{ 0x019d, "GV_THERM" },
+		{ 0x01d9, "IA32_DEBUGCTL" },
+		{ 0x0200, "IA32_MTRR_PHYSBASE0" },
+		{ 0x0201, "IA32_MTRR_PHYSMASK0" },
+		{ 0x0202, "IA32_MTRR_PHYSBASE1" },
+		{ 0x0203, "IA32_MTRR_PHYSMASK1" },
+		{ 0x0204, "IA32_MTRR_PHYSBASE2" },
+		{ 0x0205, "IA32_MTRR_PHYSMASK2" },
+		{ 0x0206, "IA32_MTRR_PHYSBASE3" },
+		{ 0x0207, "IA32_MTRR_PHYSMASK3" },
+		{ 0x0208, "IA32_MTRR_PHYSBASE4" },
+		{ 0x0209, "IA32_MTRR_PHYSMASK4" },
+		{ 0x020a, "IA32_MTRR_PHYSBASE5" },
+		{ 0x020b, "IA32_MTRR_PHYSMASK5" },
+		{ 0x020c, "IA32_MTRR_PHYSBASE6" },
+		{ 0x020d, "IA32_MTRR_PHYSMASK6" },
+		{ 0x020e, "IA32_MTRR_PHYSBASE7" },
+		{ 0x020f, "IA32_MTRR_PHYSMASK7" },
+		{ 0x0250, "IA32_MTRR_FIX64K_00000" },
+		{ 0x0258, "IA32_MTRR_FIX16K_80000" },
+		{ 0x0259, "IA32_MTRR_FIX16K_A0000" },
+		{ 0x0268, "IA32_MTRR_FIX4K_C0000" },
+		{ 0x0269, "IA32_MTRR_FIX4K_C8000" },
+		{ 0x026a, "IA32_MTRR_FIX4K_D0000" },
+		{ 0x026b, "IA32_MTRR_FIX4K_D8000" },
+		{ 0x026c, "IA32_MTRR_FIX4K_E0000" },
+		{ 0x026d, "IA32_MTRR_FIX4K_E8000" },
+		{ 0x026e, "IA32_MTRR_FIX4K_F0000" },
+		{ 0x026f, "IA32_MTRR_FIX4K_F8000" },
+		{ 0x02ff, "IA32_MTRR_DEF_TYPE" },
+		//{ 0x00c000080, "IA32_CR_EFER" }, // Seems to be RO
+	};
+
+ 	fd_msr = open("/dev/cpu/0/msr", O_RDWR);
+	if (fd_msr<0) {
+		perror("Error while opening /dev/cpu/0/msr");
+		printf("Did you run 'modprobe msr'?\n");
+		return -1;
+	}
+
+	printf("\n===================== SHARED MSRs (All Cores) =====================\n");
+
+	for (i = 0; i < ARRAY_SIZE(global_msrs); i++) {
+		msr = rdmsr(global_msrs[i].number);
+		printf(" MSR 0x%08X = 0x%08X:0x%08X (%s)\n",
+			     global_msrs[i].number, msr.hi, msr.lo, global_msrs[i].name);
+	}
+
+
+	close(fd_msr);
+	
+	for (core=0; core < 8; core++) {
+		char msrfilename[64];
+		memset(msrfilename, 0, 64);
+		sprintf(msrfilename, "/dev/cpu/%d/msr", core);
+
+		fd_msr = open(msrfilename, O_RDWR);
+		if (fd_msr<0) {
+			/* If the file is not there, we're probably through. 
+			 * No error, since we successfully opened /dev/cpu/0/msr before
+			 */
+			break;
+		}
+
+		printf("\n====================== UNIQUE MSRs  (core %d) ======================\n", core);
+
+		for (i = 0; i < ARRAY_SIZE(per_core_msrs); i++) {
+			msr = rdmsr(per_core_msrs[i].number);
+			printf(" MSR 0x%08X = 0x%08X:0x%08X (%s)\n",
+				     per_core_msrs[i].number, msr.hi, msr.lo, per_core_msrs[i].name);
+		}
+
+		close(fd_msr);
+	}
+
+	if (msr_readerror)
+		printf("\n(*) Some MSRs could not be read. The marked values are unreliable.\n");	
+
+	return 0;
+}
+
+void print_version(void)
+{
+	printf("inteltool v%s -- ", INTELTOOL_VERSION);
+	printf("Copyright (C) 2008 coresystems GmbH\n\n");
+	printf(
+    "This program is free software: you can redistribute it and/or modify\n"
+    "it under the terms of the GNU General Public License as published by\n"
+    "the Free Software Foundation, version 2 of the License.\n\n"
+    "This program is distributed in the hope that it will be useful,\n"
+    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+    "GNU General Public License for more details.\n\n"
+    "You should have received a copy of the GNU General Public License\n"
+    "along with this program.  If not, see <http://www.gnu.org/licenses/>.\n\n");
+}
+
+void print_usage(const char *name)
+{
+	printf("usage: %s [-vh?grpmedPM]\n", name);
+	printf("\n"
+	     "   -v | --version:                   print the version\n"
+	     "   -h | --help:                      print this help\n\n"
+	     "   -g | --gpio:                      dump soutbridge GPIO registers\n"
+	     "   -r | --rcba:                      dump soutbridge RCBA registers\n"
+	     "   -p | --pmbase:                    dump soutbridge Power Management registers\n\n"
+	     "   -m | --mchbar:                    dump northbridge Memory Controller registers\n"
+	     "   -e | --epbar:                     dump northbridge EPBAR registers\n"
+	     "   -d | --dmibar:                    dump northbridge DMIBAR registers\n"
+	     "   -P | --pciexpress:                dump northbridge PCIEXBAR registers\n\n"
+	     "   -M | --msrs:                      dump CPU MSRs\n"
+             "\n");
+	exit(1);
+}
+
+int main(int argc, char *argv[])
+{
+	struct pci_access *pacc;
+	struct pci_dev *sb, *nb;
+	int opt;
+	int option_index = 0;
+	int i;
+
+	char *sbname="unknown", *nbname="unknown";
+
+	int dump_gpios=0, dump_mchbar=0, dump_rcba=0;
+	int dump_pmbase=0, dump_epbar=0, dump_dmibar=0;
+	int dump_pciexbar=0, dump_coremsrs=0;
+
+	static struct option long_options[] = {
+		{"version", 0, 0, 'v'},
+		{"help", 0, 0, 'h'},
+		{"gpios", 0, 0, 'g'},
+		{"mchbar", 0, 0, 'm'},
+		{"rcba", 0, 0, 'r'},
+		{"pmbase", 0, 0, 'p'},
+		{"epbar", 0, 0, 'e'},
+		{"dmibar", 0, 0, 'd'},
+		{"pciexpress", 0, 0, 'P'},
+		{"msrs", 0, 0, 'M'},
+		{"all", 0, 0, 'a'},
+		{0, 0, 0, 0}
+	};
+
+	struct {
+		uint16_t vendor_id, device_id;
+		char * name;
+	} supported_chips_list[] = {
+		{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82945GM, "i945" },
+		{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7, "ICH7" }
+	};
+
+	while ((opt = getopt_long(argc, argv, "vh?gmrpedPca",
+                                 long_options, &option_index)) != EOF) {
+		switch (opt) {
+		case 'v':
+			print_version();
+			exit(0);
+			break;
+		case 'g':
+			dump_gpios = 1;
+			break;
+		case 'm':
+			dump_mchbar = 1;
+			break;
+		case 'r':
+			dump_rcba = 1;
+			break;
+		case 'p':
+			dump_pmbase = 1;
+			break;
+		case 'e':
+			dump_epbar = 1;
+			break;
+		case 'd':
+			dump_dmibar = 1;
+			break;
+		case 'P':
+			dump_pciexbar = 1;
+			break;
+		case 'M':
+			dump_coremsrs = 1;
+			break;
+		case 'a':
+			dump_gpios = 1;
+			dump_mchbar = 1;
+			dump_rcba = 1;
+			dump_pmbase = 1;
+			dump_epbar = 1;
+			dump_dmibar = 1;
+			dump_pciexbar = 1;
+			dump_coremsrs = 1;
+			break;
+		case 'h':
+		case '?':
+		default:
+			print_usage(argv[0]);
+			exit(0);
+			break;
+		}
+	}
+
+	if (iopl(3)) { printf("You need to be root.\n"); exit(1); }
+
+	if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
+		perror("Can not open /dev/mem");
+		exit(1);
+	}
+
+	pacc = pci_alloc();
+	pci_init(pacc);
+	pci_scan_bus(pacc);
+
+
+	/* Find the required devices */
+
+	sb = pci_get_dev(pacc, 0, 0, 0x1f, 0);
+	if (!sb) {
+		printf("No southbridge found.\n");
+		exit(1);
+	}
+
+	pci_fill_info(sb, PCI_FILL_IDENT|PCI_FILL_BASES|PCI_FILL_SIZES|PCI_FILL_CLASS);
+
+	if (sb->vendor_id != PCI_VENDOR_ID_INTEL) {
+		printf("Not an Intel(R) southbridge.\n");
+		exit(1);
+	}
+
+	nb = pci_get_dev(pacc, 0, 0, 0x00, 0);
+	if (!nb) {
+		printf("No northbridge found.\n");
+		exit(1);
+	}
+
+	pci_fill_info(nb, PCI_FILL_IDENT|PCI_FILL_BASES|PCI_FILL_SIZES|PCI_FILL_CLASS);
+
+	if (nb->vendor_id != PCI_VENDOR_ID_INTEL) {
+		printf("Not an Intel(R) northbridge.\n");
+		exit(1);
+	}
+
+	/* TODO check cpuid, too */
+
+	/* Determine names */
+	for (i=0; i<ARRAY_SIZE(supported_chips_list); i++)
+		if (nb->device_id == supported_chips_list[i].device_id)
+			nbname = supported_chips_list[i].name;
+	for (i=0; i<ARRAY_SIZE(supported_chips_list); i++)
+		if (sb->device_id == supported_chips_list[i].device_id)
+			sbname = supported_chips_list[i].name;
+
+	printf("Intel Northbridge: %04x:%04x (%s)\n", 
+		nb->vendor_id, nb->device_id, nbname);
+
+	printf("Intel Southbridge: %04x:%04x (%s)\n", 
+		sb->vendor_id, sb->device_id, sbname);
+
+	/* Now do the deed */
+
+	if (dump_gpios) {
+		print_gpios(sb);
+		printf("\n\n");
+	}
+
+	if (dump_rcba) {
+		print_rcba(sb);
+		printf("\n\n");
+	}
+
+	if (dump_pmbase) {
+		print_pmbase(sb);
+		printf("\n\n");
+	}
+
+	if (dump_mchbar) {
+		print_mchbar(nb);
+		printf("\n\n");
+	}
+
+	if (dump_epbar) {
+		print_epbar(nb);
+		printf("\n\n");
+	}
+
+	if (dump_dmibar) {
+		print_dmibar(nb);
+		printf("\n\n");
+	}
+
+	if (dump_pciexbar) {
+		print_pciexbar(nb);
+		printf("\n\n");
+	}
+
+	if (dump_coremsrs) {
+		print_intel_core_msrs();
+		printf("\n\n");
+	}
+
+
+	/* Clean up */
+
+	pci_free_dev(nb);
+	pci_free_dev(sb);
+	pci_cleanup(pacc);
+
+	return 0;
+}