diff --git a/arch/powerpc/boot/of.c b/arch/powerpc/boot/of.c
index d16ee3e..6108aef 100644
--- a/arch/powerpc/boot/of.c
+++ b/arch/powerpc/boot/of.c
@@ -15,8 +15,7 @@
 #include "page.h"
 #include "ops.h"
 
-typedef void *ihandle;
-typedef void *phandle;
+#include "of.h"
 
 extern char _end[];
 
@@ -25,154 +24,10 @@
 #define RAM_END		(512<<20)	/* Fixme: use OF */
 #define	ONE_MB		0x100000
 
-int (*prom) (void *);
 
 
 static unsigned long claim_base;
 
-static int call_prom(const char *service, int nargs, int nret, ...)
-{
-	int i;
-	struct prom_args {
-		const char *service;
-		int nargs;
-		int nret;
-		unsigned int args[12];
-	} args;
-	va_list list;
-
-	args.service = service;
-	args.nargs = nargs;
-	args.nret = nret;
-
-	va_start(list, nret);
-	for (i = 0; i < nargs; i++)
-		args.args[i] = va_arg(list, unsigned int);
-	va_end(list);
-
-	for (i = 0; i < nret; i++)
-		args.args[nargs+i] = 0;
-
-	if (prom(&args) < 0)
-		return -1;
-
-	return (nret > 0)? args.args[nargs]: 0;
-}
-
-static int call_prom_ret(const char *service, int nargs, int nret,
-		  unsigned int *rets, ...)
-{
-	int i;
-	struct prom_args {
-		const char *service;
-		int nargs;
-		int nret;
-		unsigned int args[12];
-	} args;
-	va_list list;
-
-	args.service = service;
-	args.nargs = nargs;
-	args.nret = nret;
-
-	va_start(list, rets);
-	for (i = 0; i < nargs; i++)
-		args.args[i] = va_arg(list, unsigned int);
-	va_end(list);
-
-	for (i = 0; i < nret; i++)
-		args.args[nargs+i] = 0;
-
-	if (prom(&args) < 0)
-		return -1;
-
-	if (rets != (void *) 0)
-		for (i = 1; i < nret; ++i)
-			rets[i-1] = args.args[nargs+i];
-
-	return (nret > 0)? args.args[nargs]: 0;
-}
-
-/*
- * Older OF's require that when claiming a specific range of addresses,
- * we claim the physical space in the /memory node and the virtual
- * space in the chosen mmu node, and then do a map operation to
- * map virtual to physical.
- */
-static int need_map = -1;
-static ihandle chosen_mmu;
-static phandle memory;
-
-/* returns true if s2 is a prefix of s1 */
-static int string_match(const char *s1, const char *s2)
-{
-	for (; *s2; ++s2)
-		if (*s1++ != *s2)
-			return 0;
-	return 1;
-}
-
-static int check_of_version(void)
-{
-	phandle oprom, chosen;
-	char version[64];
-
-	oprom = finddevice("/openprom");
-	if (oprom == (phandle) -1)
-		return 0;
-	if (getprop(oprom, "model", version, sizeof(version)) <= 0)
-		return 0;
-	version[sizeof(version)-1] = 0;
-	printf("OF version = '%s'\r\n", version);
-	if (!string_match(version, "Open Firmware, 1.")
-	    && !string_match(version, "FirmWorks,3."))
-		return 0;
-	chosen = finddevice("/chosen");
-	if (chosen == (phandle) -1) {
-		chosen = finddevice("/chosen@0");
-		if (chosen == (phandle) -1) {
-			printf("no chosen\n");
-			return 0;
-		}
-	}
-	if (getprop(chosen, "mmu", &chosen_mmu, sizeof(chosen_mmu)) <= 0) {
-		printf("no mmu\n");
-		return 0;
-	}
-	memory = (ihandle) call_prom("open", 1, 1, "/memory");
-	if (memory == (ihandle) -1) {
-		memory = (ihandle) call_prom("open", 1, 1, "/memory@0");
-		if (memory == (ihandle) -1) {
-			printf("no memory node\n");
-			return 0;
-		}
-	}
-	printf("old OF detected\r\n");
-	return 1;
-}
-
-static void *claim(unsigned long virt, unsigned long size, unsigned long align)
-{
-	int ret;
-	unsigned int result;
-
-	if (need_map < 0)
-		need_map = check_of_version();
-	if (align || !need_map)
-		return (void *) call_prom("claim", 3, 1, virt, size, align);
-
-	ret = call_prom_ret("call-method", 5, 2, &result, "claim", memory,
-			    align, size, virt);
-	if (ret != 0 || result == -1)
-		return (void *) -1;
-	ret = call_prom_ret("call-method", 5, 2, &result, "claim", chosen_mmu,
-			    align, size, virt);
-	/* 0x12 == coherent + read/write */
-	ret = call_prom("call-method", 6, 1, "map", chosen_mmu,
-			0x12, size, virt, virt);
-	return (void *) virt;
-}
-
 static void *of_try_claim(unsigned long size)
 {
 	unsigned long addr = 0;
@@ -184,7 +39,7 @@
 #ifdef DEBUG
 		printf("    trying: 0x%08lx\n\r", claim_base);
 #endif
-		addr = (unsigned long)claim(claim_base, size, 0);
+		addr = (unsigned long)of_claim(claim_base, size, 0);
 		if ((void *)addr != (void *)-1)
 			break;
 	}
@@ -218,52 +73,24 @@
 	return p;
 }
 
-static void of_exit(void)
-{
-	call_prom("exit", 0, 0);
-}
-
 /*
  * OF device tree routines
  */
 static void *of_finddevice(const char *name)
 {
-	return (phandle) call_prom("finddevice", 1, 1, name);
+	return (phandle) of_call_prom("finddevice", 1, 1, name);
 }
 
 static int of_getprop(const void *phandle, const char *name, void *buf,
 		const int buflen)
 {
-	return call_prom("getprop", 4, 1, phandle, name, buf, buflen);
+	return of_call_prom("getprop", 4, 1, phandle, name, buf, buflen);
 }
 
 static int of_setprop(const void *phandle, const char *name, const void *buf,
 		const int buflen)
 {
-	return call_prom("setprop", 4, 1, phandle, name, buf, buflen);
-}
-
-/*
- * OF console routines
- */
-static void *of_stdout_handle;
-
-static int of_console_open(void)
-{
-	void *devp;
-
-	if (((devp = finddevice("/chosen")) != NULL)
-			&& (getprop(devp, "stdout", &of_stdout_handle,
-				sizeof(of_stdout_handle))
-				== sizeof(of_stdout_handle)))
-		return 0;
-
-	return -1;
-}
-
-static void of_console_write(char *buf, int len)
-{
-	call_prom("write", 3, 1, of_stdout_handle, buf, len);
+	return of_call_prom("setprop", 4, 1, phandle, name, buf, buflen);
 }
 
 void platform_init(unsigned long a1, unsigned long a2, void *promptr)
@@ -277,10 +104,9 @@
 	dt_ops.getprop = of_getprop;
 	dt_ops.setprop = of_setprop;
 
-	console_ops.open = of_console_open;
-	console_ops.write = of_console_write;
+	of_console_init();
 
-	prom = (int (*)(void *))promptr;
+	of_init(promptr);
 	loader_info.promptr = promptr;
 	if (a1 && a2 && a2 != 0xdeadbeef) {
 		loader_info.initrd_addr = a1;