diff --git a/src/northbridge/intel/ironlake/acpi.c b/src/northbridge/intel/ironlake/acpi.c
index 7289e92..1fa7267 100644
--- a/src/northbridge/intel/ironlake/acpi.c
+++ b/src/northbridge/intel/ironlake/acpi.c
@@ -13,7 +13,7 @@
 	u32 pciexbar_reg;
 	int max_buses;
 
-	pciexbar_reg = pci_read_config32(PCI_DEV(QUICKPATH_BUS, 0, 1), 0x50);
+	pciexbar_reg = pci_read_config32(QPI_SAD, 0x50);
 
 	// MMCFG not supported or not enabled.
 	if (!(pciexbar_reg & (1 << 0)))
diff --git a/src/northbridge/intel/ironlake/bootblock.c b/src/northbridge/intel/ironlake/bootblock.c
index d40b0b5..50e7adb 100644
--- a/src/northbridge/intel/ironlake/bootblock.c
+++ b/src/northbridge/intel/ironlake/bootblock.c
@@ -2,9 +2,10 @@
 
 #include <arch/bootblock.h>
 #include <device/pci_ops.h>
+#include "ironlake.h"
 
 void bootblock_early_northbridge_init(void)
 {
-	pci_io_write_config32(PCI_DEV(0xff, 0x00, 1), 0x50, CONFIG_MMCONF_BASE_ADDRESS | 1);
-	pci_io_write_config32(PCI_DEV(0xff, 0x00, 1), 0x54, 0);
+	pci_io_write_config32(QPI_SAD, 0x50, CONFIG_MMCONF_BASE_ADDRESS | 1);
+	pci_io_write_config32(QPI_SAD, 0x54, 0);
 }
diff --git a/src/northbridge/intel/ironlake/early_init.c b/src/northbridge/intel/ironlake/early_init.c
index b68d954..2154478 100644
--- a/src/northbridge/intel/ironlake/early_init.c
+++ b/src/northbridge/intel/ironlake/early_init.c
@@ -25,13 +25,13 @@
 	pci_write_config32(PCI_DEV(0, 0x00, 0), DMIBAR + 4, 0);
 
 	/* Set C0000-FFFFF to access RAM on both reads and writes */
-	pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(0), 0x30);
-	pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(1), 0x33);
-	pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(2), 0x33);
-	pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(3), 0x33);
-	pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(4), 0x33);
-	pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(5), 0x33);
-	pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(6), 0x33);
+	pci_write_config8(QPI_SAD, QPD0F1_PAM(0), 0x30);
+	pci_write_config8(QPI_SAD, QPD0F1_PAM(1), 0x33);
+	pci_write_config8(QPI_SAD, QPD0F1_PAM(2), 0x33);
+	pci_write_config8(QPI_SAD, QPD0F1_PAM(3), 0x33);
+	pci_write_config8(QPI_SAD, QPD0F1_PAM(4), 0x33);
+	pci_write_config8(QPI_SAD, QPD0F1_PAM(5), 0x33);
+	pci_write_config8(QPI_SAD, QPD0F1_PAM(6), 0x33);
 
 	printk(BIOS_DEBUG, " done.\n");
 }
diff --git a/src/northbridge/intel/ironlake/ironlake.h b/src/northbridge/intel/ironlake/ironlake.h
index 5a1d52e..dd8de97 100644
--- a/src/northbridge/intel/ironlake/ironlake.h
+++ b/src/northbridge/intel/ironlake/ironlake.h
@@ -48,8 +48,10 @@
 #include "hostbridge_regs.h"
 
 /*
- * QPI D0:F1
+ * SAD - System Address Decoder
  */
+#define QPI_SAD			PCI_DEV(QUICKPATH_BUS, 0, 1)
+
 #define QPD0F1_PAM(x)		(0x40 + (x)) /* 0-6 */
 #define QPD0F1_SMRAM		0x4d	/* System Management RAM Control */
 
diff --git a/src/northbridge/intel/ironlake/raminit.c b/src/northbridge/intel/ironlake/raminit.c
index c30a5dc..ecfbd8a 100644
--- a/src/northbridge/intel/ironlake/raminit.c
+++ b/src/northbridge/intel/ironlake/raminit.c
@@ -1337,9 +1337,9 @@
 	MCHBAR16_OR(0x612, 0x100);
 	MCHBAR16_OR(0x214, 0x3E00);
 	for (i = 0; i < 8; i++) {
-		pci_write_config32(PCI_DEV (QUICKPATH_BUS, 0, 1), 0x80 + 4 * i,
+		pci_write_config32(QPI_SAD, 0x80 + 4 * i,
 			       (info->total_memory_mb - 64) | !i | 2);
-		pci_write_config32(PCI_DEV (QUICKPATH_BUS, 0, 1), 0xc0 + 4 * i, 0);
+		pci_write_config32(QPI_SAD, 0xc0 + 4 * i, 0);
 	}
 }
 
@@ -1412,7 +1412,7 @@
 		memory_map[2] = touud | 1;
 	quickpath_reserved = 0;
 
-	u32 t = pci_read_config32(PCI_DEV(QUICKPATH_BUS, 0, 1), 0x68);
+	u32 t = pci_read_config32(QPI_SAD, 0x68);
 
 	gav(t);
 
@@ -1452,10 +1452,10 @@
 	memory_map[1] = 4096;
 	for (i = 0; i < ARRAY_SIZE(memory_map); i++) {
 		current_limit = MAX(current_limit, memory_map[i] & ~1);
-		pci_write_config32(PCI_DEV(QUICKPATH_BUS, 0, 1), 4 * i + 0x80,
+		pci_write_config32(QPI_SAD, 4 * i + 0x80,
 			       (memory_map[i] & 1) | ALIGN_DOWN(current_limit -
 								1, 64) | 2);
-		pci_write_config32(PCI_DEV(QUICKPATH_BUS, 0, 1), 4 * i + 0xc0, 0);
+		pci_write_config32(QPI_SAD, 4 * i + 0xc0, 0);
 	}
 }
 
diff --git a/src/northbridge/intel/ironlake/smi.c b/src/northbridge/intel/ironlake/smi.c
index 9ffcb99..0604d13 100644
--- a/src/northbridge/intel/ironlake/smi.c
+++ b/src/northbridge/intel/ironlake/smi.c
@@ -11,5 +11,5 @@
 
 void northbridge_write_smram(u8 smram)
 {
-	pci_write_config8(PCI_DEV(QUICKPATH_BUS, 0, 1), QPD0F1_SMRAM, smram);
+	pci_write_config8(QPI_SAD, QPD0F1_SMRAM, smram);
 }