1 files changed, 69 insertions, 0 deletions
diff --git a/util/inteltool/memory.c b/util/inteltool/memory.c
new file mode 100644
index 0000000000..24a9f7c670
--- /dev/null
+++ b/util/inteltool/memory.c
@@ -0,0 +1,69 @@
+/*
+ * 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;
+}
+
+