diff --git a/sys/dev/firewire/firewire.c b/sys/dev/firewire/firewire.c
index ea89b6014988..9c7544782d86 100644
--- a/sys/dev/firewire/firewire.c
+++ b/sys/dev/firewire/firewire.c
@@ -520,7 +520,6 @@ firewire_attach( device_t dev )
 #else
 	sc->dev[i] = d;
 #endif
-	printf("%s: firewire bus attach\n", device_get_nameunit(sc->fc->dev));
 	sc->fc->timeouthandle = timeout((timeout_t *)sc->fc->timeout, (void *)sc->fc, hz * 10);
 
 	/* Locate our children */
@@ -1069,7 +1068,8 @@ fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
 /* XXX Dangerous, how to pass PHY packet to device driver */
 	fp->mode.common.tcode |= FWTCODE_PHY;
 
-	printf("send phy_config root_node=%d gap_count=%d\n",
+	if (firewire_debug)
+		printf("send phy_config root_node=%d gap_count=%d\n",
 						root_node, gap_count);
 	fw_asyreq(fc, -1, xfer);
 }
@@ -1341,7 +1341,9 @@ fw_bus_explore(struct firewire_comm *fc )
 			TAILQ_INSERT_BEFORE(tfwdev, fwdev, link);
 		}
 
-		printf("%s:Discover new %s device ID:%08x%08x\n", device_get_nameunit(fc->dev), linkspeed[fwdev->speed], fc->ongoeui.hi, fc->ongoeui.lo);
+		device_printf(fc->dev, "New %s device ID:%08x%08x\n",
+			linkspeed[fwdev->speed],
+			fc->ongoeui.hi, fc->ongoeui.lo);
 
 		fc->ongodev = fwdev;
 		fc->ongoaddr = CSRROMOFF;
@@ -1389,7 +1391,8 @@ fw_bus_explore(struct firewire_comm *fc )
 done:
 	/* fw_attach_devs */
 	fc->status = FWBUSEXPDONE;
-	printf("bus_explore done\n");
+	if (firewire_debug)
+		printf("bus_explore done\n");
 	fw_attach_dev(fc);
 	return;
 
@@ -1638,11 +1641,12 @@ fw_attach_dev(struct firewire_comm *fc)
 				continue;
 			fwdev->maxrec = (fwdev->csrrom[2] >> 12) & 0xf;
 
+			device_printf(fc->dev, "Device ");
 			switch(fwdev->spec){
 			case CSRVAL_ANSIT10:
 				switch(fwdev->ver){
 				case CSRVAL_T10SBP2:
-					printf("Device SBP-II");
+					printf("SBP-II");
 					break;
 				default:
 					break;
@@ -1651,38 +1655,39 @@ fw_attach_dev(struct firewire_comm *fc)
 			case CSRVAL_1394TA:
 				switch(fwdev->ver){
 				case CSR_PROTAVC:
-					printf("Device AV/C");
+					printf("AV/C");
 					break;
 				case CSR_PROTCAL:
-					printf("Device CAL");
+					printf("CAL");
 					break;
 				case CSR_PROTEHS:
-					printf("Device EHS");
+					printf("EHS");
 					break;
 				case CSR_PROTHAVI:
-					printf("Device HAVi");
+					printf("HAVi");
 					break;
 				case CSR_PROTCAM104:
-					printf("Device 1394 Cam 1.04");
+					printf("1394 Cam 1.04");
 					break;
 				case CSR_PROTCAM120:
-					printf("Device 1394 Cam 1.20");
+					printf("1394 Cam 1.20");
 					break;
 				case CSR_PROTCAM130:
-					printf("Device 1394 Cam 1.30");
+					printf("1394 Cam 1.30");
 					break;
 				case CSR_PROTDPP:
-					printf("Device 1394 Direct print");
+					printf("1394 Direct print");
 					break;
 				case CSR_PROTIICP:
-					printf("Device Industrial & Instrument");
+					printf("Industrial & Instrument");
 					break;
 				default:
-					printf("Device unkwon 1394TA");
+					printf("unknown 1394TA");
 					break;
 				}
 				break;
 			default:
+				printf("unknown spec");
 				break;
 			}
 			fwdev->status = FWDEVATTACHED;
diff --git a/sys/dev/firewire/fwohci.c b/sys/dev/firewire/fwohci.c
index 1ee7e75588a1..a72d26d9d783 100644
--- a/sys/dev/firewire/fwohci.c
+++ b/sys/dev/firewire/fwohci.c
@@ -292,12 +292,11 @@ fwohci_set_bus_manager(struct firewire_comm *fc, u_int node)
  	for (i = 0; !(OREAD(sc, OHCI_CSR_CONT) & (1<<31)) && (i < 1000); i++)
 		DELAY(100);
 	bm = OREAD(sc, OHCI_CSR_DATA);
-	if((bm & 0x3f) == 0x3f){
-		printf("fw_set_bus_manager: %d->%d (loop=%d)\n", bm, node, i);
+	if((bm & 0x3f) == 0x3f)
 		bm = node;
-	}else{
-		printf("fw_set_bus_manager: %d-X%d (loop=%d)\n", bm, node, i);
-	}
+	if (bootverbose)
+		device_printf(sc->fc.dev,
+			"fw_set_bus_manager: %d->%d (loop=%d)\n", bm, node, i);
 
 	return(bm);
 }
@@ -471,13 +470,15 @@ fwohci_init(struct fwohci_softc *sc, device_t dev)
 
 /* FLUSH FIFO and reset Transmitter/Reciever */
 	OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET);
-	device_printf(dev, "resetting OHCI...");
+	if (bootverbose)
+		device_printf(dev, "resetting OHCI...");
 	i = 0;
 	while(OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_RESET) {
 		if (i++ > 100) break;
 		DELAY(1000);
 	}
-	printf("done (%d)\n", i);
+	if (bootverbose)
+		printf("done (%d)\n", i);
 	OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS);
 	/* XXX wait for SCLK. */
 	DELAY(100000);
@@ -487,7 +488,8 @@ fwohci_init(struct fwohci_softc *sc, device_t dev)
 	/* XXX  */
 	if (((reg & 0x0000f000) >> 12) < 10)
 		reg2 = (reg2 & 0xffff0fff) | (10 << 12);
-	device_printf(dev, "BUS_OPT 0x%x -> 0x%x\n", reg, reg2);
+	if (bootverbose)
+		device_printf(dev, "BUS_OPT 0x%x -> 0x%x\n", reg, reg2);
 	OWRITE(sc,  OHCI_BUS_OPT, reg2);
 
 	OWRITE(sc, OHCI_CROMHDR, sc->fc.config_rom[0]);
@@ -544,7 +546,9 @@ fwohci_init(struct fwohci_softc *sc, device_t dev)
 #else	/* XXX force to enable 1394a */
 		if (e1394a) {
 #endif
-			device_printf(dev, "Enable 1394a Enhancements\n");
+			if (bootverbose)
+				device_printf(dev,
+					"Enable 1394a Enhancements\n");
 			/* enable EAA EMC */
 			reg2 |= 0x03;
 			/* set aPhyEnhanceEnable */
@@ -781,7 +785,7 @@ fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch)
 	if(db_tr != dbch->bottom){
 		goto txloop;
 	} else {
-		printf("fwohci_start: lack of db_trq\n");
+		device_printf(sc->fc.dev, "fwohci_start: lack of db_trq\n");
 		dbch->flags |= FWOHCI_DBCH_FULL;
 	}
 kick:
@@ -791,7 +795,8 @@ fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch)
 	if(dbch->xferq.flag & FWXFERQ_RUNNING) {
 		OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE);
 	} else {
-		printf("start AT DMA status=%x\n",
+		if (bootverbose)
+			device_printf(sc->fc.dev, "start AT DMA status=%x\n",
 					OREAD(sc, OHCI_DMACTL(off)));
 		OWRITE(sc, OHCI_DMACMD(off), vtophys(dbch->top->db) | fsegment);
 		OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN);
@@ -1720,7 +1725,8 @@ fwohci_set_intr(struct firewire_comm *fc, int enable)
 	struct fwohci_softc *sc;
 
 	sc = (struct fwohci_softc *)fc;
-	printf("fwochi_set_intr: %d\n", enable);
+	if (bootverbose)
+		device_printf(sc->fc.dev, "fwochi_set_intr: %d\n", enable);
 	if (enable) {
 		sc->intmask |= OHCI_INT_EN;
 		OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_EN);
diff --git a/sys/dev/firewire/fwohci_pci.c b/sys/dev/firewire/fwohci_pci.c
index dcb6063017ce..a2a0684fab41 100644
--- a/sys/dev/firewire/fwohci_pci.c
+++ b/sys/dev/firewire/fwohci_pci.c
@@ -183,7 +183,8 @@ fwohci_pci_attach(device_t self)
 	cache_line = DEF_CACHE_LINE;
 	pci_write_config(self, PCIR_CACHELNSZ, cache_line, 1);
 #endif
-	printf("cache size %d.\n", (int) cache_line);
+	if (bootverbose)
+		device_printf(self, "cache size %d.\n", (int) cache_line);
 /**/
 	rid = PCI_CBMEM;
 	sc->bsr = bus_alloc_resource(self, SYS_RES_MEMORY, &rid,
diff --git a/sys/dev/firewire/if_fwe.c b/sys/dev/firewire/if_fwe.c
index 5433bb90fbc7..dca079d3bc51 100644
--- a/sys/dev/firewire/if_fwe.c
+++ b/sys/dev/firewire/if_fwe.c
@@ -174,7 +174,8 @@ fwe_attach(device_t dev)
 	eaddr[3] = fwe->fd.fc->eui[5];
 	eaddr[4] = fwe->fd.fc->eui[6];
 	eaddr[5] = fwe->fd.fc->eui[7];
-	printf("if_fwe%d: %02x:%02x:%02x:%02x:%02x:%02x\n", unit,
+	printf("if_fwe%d: Fake Ethernet address: "
+		"%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
 		eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
 
 	/* fill the rest and attach interface */	
diff --git a/sys/dev/firewire/sbp.c b/sys/dev/firewire/sbp.c
index 27359fc5af91..83d692ba4874 100644
--- a/sys/dev/firewire/sbp.c
+++ b/sys/dev/firewire/sbp.c
@@ -129,7 +129,7 @@ static char *orb_fun_name[] = {
 #define ORB_RES_ILLE 2
 #define ORB_RES_VEND 3
 
-static int debug = 1;
+static int debug = 0;
 static int auto_login = 1;
 static int max_speed = 2;
 
@@ -555,8 +555,10 @@ END_DEBUG
 				}
 				break;
 			}
+SBP_DEBUG(0)
 			sbp_show_sdev_info(sdev, 
 					(sdev->status == SBP_DEV_TOATTACH));
+END_DEBUG
 		} else {
 			switch (sdev->status) {
 			case SBP_DEV_ATTACHED:
@@ -1063,8 +1065,10 @@ sbp_mgm_orb(struct sbp_dev *sdev, int func)
 		sdev->target->target_id,
 		sdev->lun_id));
 
+SBP_DEBUG(0)
 	sbp_show_sdev_info(sdev, 2);
 	printf("%s\n", orb_fun_name[(func>>16)&0xf]);
+END_DEBUG
 	switch (func) {
 	case ORB_FUN_LGI:
 		ocb->orb[2] = htonl(nid << 16);