diff --git a/arch/sparc64/kernel/central.c b/arch/sparc64/kernel/central.c
index 3d184a784968..b66336db00ee 100644
--- a/arch/sparc64/kernel/central.c
+++ b/arch/sparc64/kernel/central.c
@@ -29,28 +29,34 @@ static void central_probe_failure(int line)
 	prom_halt();
 }
 
-static void central_ranges_init(int cnode, struct linux_central *central)
+static void central_ranges_init(struct linux_central *central)
 {
-	int success;
+	struct device_node *dp = central->prom_node;
+	void *pval;
+	int len;
 	
 	central->num_central_ranges = 0;
-	success = prom_getproperty(central->prom_node, "ranges",
-				   (char *) central->central_ranges,
-				   sizeof (central->central_ranges));
-	if (success != -1)
-		central->num_central_ranges = (success/sizeof(struct linux_prom_ranges));
+	pval = of_get_property(dp, "ranges", &len);
+	if (pval) {
+		memcpy(central->central_ranges, pval, len);
+		central->num_central_ranges =
+			(len / sizeof(struct linux_prom_ranges));
+	}
 }
 
-static void fhc_ranges_init(int fnode, struct linux_fhc *fhc)
+static void fhc_ranges_init(struct linux_fhc *fhc)
 {
-	int success;
+	struct device_node *dp = fhc->prom_node;
+	void *pval;
+	int len;
 	
 	fhc->num_fhc_ranges = 0;
-	success = prom_getproperty(fhc->prom_node, "ranges",
-				   (char *) fhc->fhc_ranges,
-				   sizeof (fhc->fhc_ranges));
-	if (success != -1)
-		fhc->num_fhc_ranges = (success/sizeof(struct linux_prom_ranges));
+	pval = of_get_property(dp, "ranges", &len);
+	if (pval) {
+		memcpy(fhc->fhc_ranges, pval, len);
+		fhc->num_fhc_ranges =
+			(len / sizeof(struct linux_prom_ranges));
+	}
 }
 
 /* Range application routines are exported to various drivers,
@@ -112,15 +118,10 @@ static unsigned long prom_reg_to_paddr(struct linux_prom_registers *r)
 
 static void probe_other_fhcs(void)
 {
-	struct linux_prom64_registers fpregs[6];
-	char namebuf[128];
-	int node;
+	struct device_node *dp;
+	struct linux_prom64_registers *fpregs;
 
-	node = prom_getchild(prom_root_node);
-	node = prom_searchsiblings(node, "fhc");
-	if (node == 0)
-		central_probe_failure(__LINE__);
-	while (node) {
+	for_each_node_by_name(dp, "fhc") {
 		struct linux_fhc *fhc;
 		int board;
 		u32 tmp;
@@ -137,14 +138,12 @@ static void probe_other_fhcs(void)
 		/* Toplevel FHCs have no parent. */
 		fhc->parent = NULL;
 		
-		fhc->prom_node = node;
-		prom_getstring(node, "name", namebuf, sizeof(namebuf));
-		strcpy(fhc->prom_name, namebuf);
-		fhc_ranges_init(node, fhc);
+		fhc->prom_node = dp;
+		fhc_ranges_init(fhc);
 
 		/* Non-central FHC's have 64-bit OBP format registers. */
-		if (prom_getproperty(node, "reg",
-				    (char *)&fpregs[0], sizeof(fpregs)) == -1)
+		fpregs = of_get_property(dp, "reg", NULL);
+		if (!fpregs)
 			central_probe_failure(__LINE__);
 
 		/* Only central FHC needs special ranges applied. */
@@ -155,7 +154,7 @@ static void probe_other_fhcs(void)
 		fhc->fhc_regs.uregs = fpregs[4].phys_addr;
 		fhc->fhc_regs.tregs = fpregs[5].phys_addr;
 
-		board = prom_getintdefault(node, "board#", -1);
+		board = of_getintprop_default(dp, "board#", -1);
 		fhc->board = board;
 
 		tmp = upa_readl(fhc->fhc_regs.pregs + FHC_PREGS_JCTRL);
@@ -179,33 +178,33 @@ static void probe_other_fhcs(void)
 		tmp = upa_readl(fhc->fhc_regs.pregs + FHC_PREGS_CTRL);
 		tmp |= FHC_CONTROL_IXIST;
 		upa_writel(tmp, fhc->fhc_regs.pregs + FHC_PREGS_CTRL);
-
-		/* Look for the next FHC. */
-		node = prom_getsibling(node);
-		if (node == 0)
-			break;
-		node = prom_searchsiblings(node, "fhc");
-		if (node == 0)
-			break;
 	}
 }
 
 static void probe_clock_board(struct linux_central *central,
 			      struct linux_fhc *fhc,
-			      int cnode, int fnode)
+			      struct device_node *fp)
 {
-	struct linux_prom_registers cregs[3];
-	int clknode, nslots, tmp, nregs;
+	struct device_node *dp;
+	struct linux_prom_registers cregs[3], *pr;
+	int nslots, tmp, nregs;
 
-	clknode = prom_searchsiblings(prom_getchild(fnode), "clock-board");
-	if (clknode == 0 || clknode == -1)
+	dp = fp->child;
+	while (dp) {
+		if (!strcmp(dp->name, "clock-board"))
+			break;
+		dp = dp->sibling;
+	}
+	if (!dp)
 		central_probe_failure(__LINE__);
 
-	nregs = prom_getproperty(clknode, "reg", (char *)&cregs[0], sizeof(cregs));
-	if (nregs == -1)
+	pr = of_get_property(dp, "reg", &nregs);
+	if (!pr)
 		central_probe_failure(__LINE__);
 
+	memcpy(cregs, pr, nregs);
 	nregs /= sizeof(struct linux_prom_registers);
+
 	apply_fhc_ranges(fhc, &cregs[0], nregs);
 	apply_central_ranges(central, &cregs[0], nregs);
 	central->cfreg = prom_reg_to_paddr(&cregs[0]);
@@ -296,13 +295,13 @@ static void init_all_fhc_hw(void)
 
 void central_probe(void)
 {
-	struct linux_prom_registers fpregs[6];
+	struct linux_prom_registers fpregs[6], *pr;
 	struct linux_fhc *fhc;
-	char namebuf[128];
-	int cnode, fnode, err;
+	struct device_node *dp, *fp;
+	int err;
 
-	cnode = prom_finddevice("/central");
-	if (cnode == 0 || cnode == -1) {
+	dp = of_find_node_by_name(NULL, "central");
+	if (!dp) {
 		if (this_is_starfire)
 			starfire_cpu_setup();
 		return;
@@ -321,31 +320,31 @@ void central_probe(void)
 
 	/* First init central. */
 	central_bus->child = fhc;
-	central_bus->prom_node = cnode;
-
-	prom_getstring(cnode, "name", namebuf, sizeof(namebuf));
-	strcpy(central_bus->prom_name, namebuf);
-
-	central_ranges_init(cnode, central_bus);
+	central_bus->prom_node = dp;
+	central_ranges_init(central_bus);
 
 	/* And then central's FHC. */
 	fhc->next = fhc_list;
 	fhc_list = fhc;
 
 	fhc->parent = central_bus;
-	fnode = prom_searchsiblings(prom_getchild(cnode), "fhc");
-	if (fnode == 0 || fnode == -1)
+	fp = dp->child;
+	while (fp) {
+		if (!strcmp(fp->name, "fhc"))
+			break;
+		fp = fp->sibling;
+	}
+	if (!fp)
 		central_probe_failure(__LINE__);
 
-	fhc->prom_node = fnode;
-	prom_getstring(fnode, "name", namebuf, sizeof(namebuf));
-	strcpy(fhc->prom_name, namebuf);
-
-	fhc_ranges_init(fnode, fhc);
+	fhc->prom_node = fp;
+	fhc_ranges_init(fhc);
 
 	/* Now, map in FHC register set. */
-	if (prom_getproperty(fnode, "reg", (char *)&fpregs[0], sizeof(fpregs)) == -1)
+	pr = of_get_property(fp, "reg", NULL);
+	if (!pr)
 		central_probe_failure(__LINE__);
+	memcpy(fpregs, pr, sizeof(fpregs));
 
 	apply_central_ranges(central_bus, &fpregs[0], 6);
 	
@@ -366,7 +365,7 @@ void central_probe(void)
 	fhc->jtag_master = 0;
 
 	/* Attach the clock board registers for CENTRAL. */
-	probe_clock_board(central_bus, fhc, cnode, fnode);
+	probe_clock_board(central_bus, fhc, fp);
 
 	err = upa_readl(fhc->fhc_regs.pregs + FHC_PREGS_ID);
 	printk("FHC(board %d): Version[%x] PartID[%x] Manuf[%x] (CENTRAL)\n",
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index d072b8632ccd..348b82035561 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -796,26 +796,26 @@ static void __init clock_assign_clk_reg(struct linux_prom_registers *clk_reg,
 
 static int __init clock_probe_central(void)
 {
-	struct linux_prom_registers clk_reg[2];
-	char model[64];
-	int node;
+	struct linux_prom_registers clk_reg[2], *pr;
+	struct device_node *dp;
+	char *model;
 
 	if (!central_bus)
 		return 0;
 
 	/* Get Central FHC's prom node.  */
-	node = central_bus->child->prom_node;
+	dp = central_bus->child->prom_node;
 
 	/* Then get the first child device below it.  */
-	node = prom_getchild(node);
+	dp = dp->child;
 
-	while (node) {
-		prom_getstring(node, "model", model, sizeof(model));
-		if (!clock_model_matches(model))
+	while (dp) {
+		model = of_get_property(dp, "model", NULL);
+		if (!model || !clock_model_matches(model))
 			goto next_sibling;
 
-		prom_getproperty(node, "reg", (char *)clk_reg,
-				 sizeof(clk_reg));
+		pr = of_get_property(dp, "reg", NULL);
+		memcpy(clk_reg, pr, sizeof(clk_reg));
 
 		apply_fhc_ranges(central_bus->child, clk_reg, 1);
 		apply_central_ranges(central_bus, clk_reg, 1);
@@ -824,7 +824,7 @@ static int __init clock_probe_central(void)
 		return 1;
 
 	next_sibling:
-		node = prom_getsibling(node);
+		dp = dp->sibling;
 	}
 
 	return 0;
diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c
index 5b6569728a9c..76c9bac9271f 100644
--- a/drivers/serial/sunzilog.c
+++ b/drivers/serial/sunzilog.c
@@ -1106,7 +1106,7 @@ static struct zilog_layout __iomem * __init get_zs_sun4u(int chip, int zsnode)
 				+ FHC_UREGS_ICLR;
 			imap = central_bus->child->fhc_regs.uregs
 				+ FHC_UREGS_IMAP;
-			zilog_irq = build_irq(12, 0, iclr, imap);
+			zilog_irq = build_irq(0, iclr, imap);
 		} else {
 			err = prom_getproperty(zsnode, "interrupts",
 					       (char *) &sun4u_ino,
diff --git a/include/asm-sparc64/fhc.h b/include/asm-sparc64/fhc.h
index f29eaa254055..9e7f1b0d78b9 100644
--- a/include/asm-sparc64/fhc.h
+++ b/include/asm-sparc64/fhc.h
@@ -10,6 +10,7 @@
 #include <linux/timer.h>
 
 #include <asm/oplib.h>
+#include <asm/prom.h>
 #include <asm/upa.h>
 
 struct linux_fhc;
@@ -34,8 +35,7 @@ struct linux_central {
 	unsigned long			clkregs;
 	unsigned long			clkver;
 	int				slots;
-	int				prom_node;
-	char				prom_name[64];
+	struct device_node		*prom_node;
 
 	struct linux_prom_ranges	central_ranges[PROMREG_MAX];
 	int				num_central_ranges;
@@ -112,8 +112,7 @@ struct linux_fhc {
 	struct fhc_regs			fhc_regs;
 	int				board;
 	int				jtag_master;
-	int				prom_node;
-	char				prom_name[64];
+	struct device_node		*prom_node;
 
 	struct linux_prom_ranges	fhc_ranges[PROMREG_MAX];
 	int				num_fhc_ranges;