Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

22 files changed, 2583 insertions, 70 deletions

diff --git a/arch/powerpc/boot/.gitignore b/arch/powerpc/boot/.gitignore
index 45c9ad23526e..0734b2fc1d95 100644
--- a/arch/powerpc/boot/.gitignore
+++ b/arch/powerpc/boot/.gitignore
@@ -1,19 +1,32 @@
 addnote
+empty.c
+hack-coff
 infblock.c
 infblock.h
 infcodes.c
 infcodes.h
 inffast.c
 inffast.h
+inffixed.h
 inflate.c
+inflate.h
 inftrees.c
 inftrees.h
 infutil.c
 infutil.h
 kernel-vmlinux.strip.c
 kernel-vmlinux.strip.gz
+mktree
 uImage
 zImage
+zImage.chrp
+zImage.coff
+zImage.coff.lds
+zImage.lds
+zImage.miboot
+zImage.pmac
+zImage.pseries
+zImage.sandpoint
 zImage.vmode
 zconf.h
 zlib.h
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 4b2be611f77f..98392fb5f581 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -40,7 +40,8 @@ zliblinuxheader := zlib.h zconf.h zutil.h
 $(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) \
 		$(addprefix $(obj)/,$(zlibheader))
 
-src-wlib := string.S stdio.c main.c div64.S $(zlib)
+src-wlib := string.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
+		ns16550.c serial.c simple_alloc.c div64.S util.S $(zlib)
 src-plat := of.c
 src-boot := crt0.S $(src-wlib) $(src-plat) empty.c
 
@@ -74,7 +75,7 @@ $(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S
 	@cp $< $@
 
 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
-		$(obj)/empty.c
+		empty.c zImage zImage.coff.lds zImage.lds zImage.sandpoint
 
 quiet_cmd_bootcc = BOOTCC  $@
       cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
@@ -93,13 +94,13 @@ $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
 $(obj)/wrapper.a: $(obj-wlib)
 	$(call cmd,bootar)
 
-hostprogs-y	:= addnote addRamDisk hack-coff
+hostprogs-y	:= addnote addRamDisk hack-coff mktree
 
 extra-y		:= $(obj)/crt0.o $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 		   $(obj)/zImage.lds $(obj)/zImage.coff.lds
 
 wrapper		:=$(srctree)/$(src)/wrapper
-wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff)
+wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree)
 
 #############
 # Bits for building various flavours of zImage
@@ -148,13 +149,21 @@ $(obj)/zImage.miboot: vmlinux $(wrapperbits)
 $(obj)/zImage.initrd.miboot: vmlinux $(wrapperbits)
 	$(call cmd,wrap_initrd,miboot)
 
+$(obj)/zImage.ps3: vmlinux
+	$(STRIP) -s -R .comment $< -o $@
+
+$(obj)/zImage.initrd.ps3: vmlinux
+	@echo "  WARNING zImage.initrd.ps3 not supported (yet)"
+
 $(obj)/uImage: vmlinux $(wrapperbits)
 	$(call cmd,wrap,uboot)
 
 image-$(CONFIG_PPC_PSERIES)		+= zImage.pseries
 image-$(CONFIG_PPC_MAPLE)		+= zImage.pseries
 image-$(CONFIG_PPC_IBM_CELL_BLADE)	+= zImage.pseries
+image-$(CONFIG_PPC_PS3)			+= zImage.ps3
 image-$(CONFIG_PPC_CHRP)		+= zImage.chrp
+image-$(CONFIG_PPC_EFIKA)		+= zImage.chrp
 image-$(CONFIG_PPC_PMAC)		+= zImage.pmac
 image-$(CONFIG_DEFAULT_UIMAGE)		+= uImage
 
@@ -176,3 +185,4 @@ install: $(CONFIGURE) $(image-y)
 
 clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip.gz)
 clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.bin.gz)
+clean-files += $(image-)
diff --git a/arch/powerpc/boot/dts/kuroboxHG.dts b/arch/powerpc/boot/dts/kuroboxHG.dts
new file mode 100644
index 000000000000..d06b0b018899
--- /dev/null
+++ b/arch/powerpc/boot/dts/kuroboxHG.dts
@@ -0,0 +1,148 @@
+/*
+ * Device Tree Souce for Buffalo KuroboxHG
+ *
+ * Choose CONFIG_LINKSTATION to build a kernel for KuroboxHG, or use
+ * the default configuration linkstation_defconfig.
+ *
+ * Based on sandpoint.dts
+ *
+ * 2006 (c) G. Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+
+XXXX add flash parts, rtc, ??
+
+build with: "dtc -f -I dts -O dtb -o kuroboxHG.dtb -V 16 kuroboxHG.dts"
+
+
+ */
+
+/ {
+	linux,phandle = <1000>;
+	model = "KuroboxHG";
+	compatible = "linkstation";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		linux,phandle = <2000>;
+		#cpus = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,603e { /* Really 8241 */
+			linux,phandle = <2100>;
+			linux,boot-cpu;
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <fdad680>;	/* Fixed by bootwrapper */
+			timebase-frequency = <1F04000>; /* Fixed by bootwrapper */
+			bus-frequency = <0>;		/* From bootloader */
+			/* Following required by dtc but not used */
+			i-cache-line-size = <0>;
+			d-cache-line-size = <0>;
+			i-cache-size = <4000>;
+			d-cache-size = <4000>;
+		};
+	};
+
+	memory {
+		linux,phandle = <3000>;
+		device_type = "memory";
+		reg = <00000000 08000000>;
+	};
+
+	soc10x { /* AFAICT need to make soc for 8245's uarts to be defined */
+		linux,phandle = <4000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		#interrupt-cells = <2>;
+		device_type = "soc";
+		compatible = "mpc10x";
+		store-gathering = <0>; /* 0 == off, !0 == on */
+		reg = <80000000 00100000>;
+		ranges = <80000000 80000000 70000000	/* pci mem space */
+			  fc000000 fc000000 00100000	/* EUMB */
+			  fe000000 fe000000 00c00000	/* pci i/o space */
+			  fec00000 fec00000 00300000	/* pci cfg regs */
+			  fef00000 fef00000 00100000>;	/* pci iack */
+
+		i2c@80003000 {
+			linux,phandle = <4300>;
+			device_type = "i2c";
+			compatible = "fsl-i2c";
+			reg = <80003000 1000>;
+			interrupts = <5 2>;
+			interrupt-parent = <4400>;
+		};
+
+		serial@80004500 {
+			linux,phandle = <4511>;
+			device_type = "serial";
+			compatible = "ns16550";
+			reg = <80004500 8>;
+			clock-frequency = <7c044a8>;
+			current-speed = <2580>;
+			interrupts = <9 2>;
+			interrupt-parent = <4400>;
+		};
+
+		serial@80004600 {
+			linux,phandle = <4512>;
+			device_type = "serial";
+			compatible = "ns16550";
+			reg = <80004600 8>;
+			clock-frequency = <7c044a8>;
+			current-speed = <e100>;
+			interrupts = <a 0>;
+			interrupt-parent = <4400>;
+		};
+
+		pic@80040000 {
+			linux,phandle = <4400>;
+			#interrupt-cells = <2>;
+			#address-cells = <0>;
+			device_type = "open-pic";
+			compatible = "chrp,open-pic";
+			interrupt-controller;
+			reg = <80040000 40000>;
+			built-in;
+		};
+
+		pci@fec00000 {
+			linux,phandle = <4500>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			device_type = "pci";
+			compatible = "mpc10x-pci";
+			reg = <fec00000 400000>;
+			ranges = <01000000 0        0 fe000000 0 00c00000
+				  02000000 0 80000000 80000000 0 70000000>;
+			bus-range = <0 ff>;
+			clock-frequency = <7f28155>;
+			interrupt-parent = <4400>;
+			interrupt-map-mask = <f800 0 0 7>;
+			interrupt-map = <
+				/* IDSEL 0x11 - IRQ0 ETH */
+				5800 0 0 1 4400 0 1
+				5800 0 0 2 4400 1 1
+				5800 0 0 3 4400 2 1
+				5800 0 0 4 4400 3 1
+				/* IDSEL 0x12 - IRQ1 IDE0 */
+				6000 0 0 1 4400 1 1
+				6000 0 0 2 4400 2 1
+				6000 0 0 3 4400 3 1
+				6000 0 0 4 4400 0 1
+				/* IDSEL 0x14 - IRQ3 USB2.0 */
+				7000 0 0 1 4400 3 1
+				7000 0 0 2 4400 3 1
+				7000 0 0 3 4400 3 1
+				7000 0 0 4 4400 3 1
+			>;
+		};
+	};
+};
diff --git a/arch/powerpc/boot/dts/lite5200.dts b/arch/powerpc/boot/dts/lite5200.dts
new file mode 100644
index 000000000000..a8efb59f5dd7
--- /dev/null
+++ b/arch/powerpc/boot/dts/lite5200.dts
@@ -0,0 +1,313 @@
+/*
+ * Lite5200 board Device Tree Source
+ *
+ * Copyright 2006 Secret Lab Technologies Ltd.
+ * Grant Likely <grant.likely@secretlab.ca>
+ *
+ * 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;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+/ {
+	model = "Lite5200";
+	compatible = "lite5200\0lite52xx\0mpc5200\0mpc52xx";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#cpus = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,5200@0 {
+			device_type = "cpu";
+			reg = <0>;
+			d-cache-line-size = <20>;
+			i-cache-line-size = <20>;
+			d-cache-size = <4000>;		// L1, 16K
+			i-cache-size = <4000>;		// L1, 16K
+			timebase-frequency = <0>;	// from bootloader
+			bus-frequency = <0>;		// from bootloader
+			clock-frequency = <0>;		// from bootloader
+			32-bit;
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <00000000 04000000>;	// 64MB
+	};
+
+	soc5200@f0000000 {
+		#interrupt-cells = <3>;
+		device_type = "soc";
+		ranges = <0 f0000000 f0010000>;
+		reg = <f0000000 00010000>;
+		bus-frequency = <0>;		// from bootloader
+
+		cdm@200 {
+			compatible = "mpc5200-cdm\0mpc52xx-cdm";
+			reg = <200 38>;
+		};
+
+		pic@500 {
+			// 5200 interrupts are encoded into two levels;
+			linux,phandle = <500>;
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			device_type = "interrupt-controller";
+			compatible = "mpc5200-pic\0mpc52xx-pic";
+			reg = <500 80>;
+			built-in;
+		};
+
+		gpt@600 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <600 10>;
+			interrupts = <1 9 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@610 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <610 10>;
+			interrupts = <1 a 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@620 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <620 10>;
+			interrupts = <1 b 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@630 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <630 10>;
+			interrupts = <1 c 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@640 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <640 10>;
+			interrupts = <1 d 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@650 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <650 10>;
+			interrupts = <1 e 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@660 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <660 10>;
+			interrupts = <1 f 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@670 {	// General Purpose Timer
+			compatible = "mpc5200-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <670 10>;
+			interrupts = <1 10 0>;
+			interrupt-parent = <500>;
+		};
+
+		rtc@800 {	// Real time clock
+			compatible = "mpc5200-rtc\0mpc52xx-rtc";
+			device_type = "rtc";
+			reg = <800 100>;
+			interrupts = <1 5 0 1 6 0>;
+			interrupt-parent = <500>;
+		};
+
+		mscan@900 {
+			device_type = "mscan";
+			compatible = "mpc5200-mscan\0mpc52xx-mscan";
+			interrupts = <2 11 0>;
+			interrupt-parent = <500>;
+			reg = <900 80>;
+		};
+
+		mscan@980 {
+			device_type = "mscan";
+			compatible = "mpc5200-mscan\0mpc52xx-mscan";
+			interrupts = <1 12 0>;
+			interrupt-parent = <500>;
+			reg = <980 80>;
+		};
+
+		gpio@b00 {
+			compatible = "mpc5200-gpio\0mpc52xx-gpio";
+			reg = <b00 40>;
+			interrupts = <1 7 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpio-wkup@b00 {
+			compatible = "mpc5200-gpio-wkup\0mpc52xx-gpio-wkup";
+			reg = <c00 40>;
+			interrupts = <1 8 0 0 3 0>;
+			interrupt-parent = <500>;
+		};
+
+		pci@0d00 {
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			device_type = "pci";
+			compatible = "mpc5200-pci\0mpc52xx-pci";
+			reg = <d00 100>;
+			interrupt-map-mask = <f800 0 0 7>;
+			interrupt-map = <c000 0 0 1 500 0 0 3
+			                 c000 0 0 2 500 0 0 3
+			                 c000 0 0 3 500 0 0 3
+			                 c000 0 0 4 500 0 0 3>;
+			clock-frequency = <0>; // From boot loader
+			interrupts = <2 8 0 2 9 0 2 a 0>;
+			interrupt-parent = <500>;
+			bus-range = <0 0>;
+			ranges = <42000000 0 80000000 80000000 0 20000000
+			          02000000 0 a0000000 a0000000 0 10000000
+			          01000000 0 00000000 b0000000 0 01000000>;
+		};
+
+		spi@f00 {
+			device_type = "spi";
+			compatible = "mpc5200-spi\0mpc52xx-spi";
+			reg = <f00 20>;
+			interrupts = <2 d 0 2 e 0>;
+			interrupt-parent = <500>;
+		};
+
+		usb@1000 {
+			device_type = "usb-ohci-be";
+			compatible = "mpc5200-ohci\0mpc52xx-ohci\0ohci-be";
+			reg = <1000 ff>;
+			interrupts = <2 6 0>;
+			interrupt-parent = <500>;
+		};
+
+		bestcomm@1200 {
+			device_type = "dma-controller";
+			compatible = "mpc5200-bestcomm\0mpc52xx-bestcomm";
+			reg = <1200 80>;
+			interrupts = <3 0 0  3 1 0  3 2 0  3 3 0
+			              3 4 0  3 5 0  3 6 0  3 7 0
+			              3 8 0  3 9 0  3 a 0  3 b 0
+			              3 c 0  3 d 0  3 e 0  3 f 0>;
+			interrupt-parent = <500>;
+		};
+
+		xlb@1f00 {
+			compatible = "mpc5200-xlb\0mpc52xx-xlb";
+			reg = <1f00 100>;
+		};
+
+		serial@2000 {		// PSC1
+			device_type = "serial";
+			compatible = "mpc5200-psc-uart\0mpc52xx-psc-uart";
+			port-number = <0>;  // Logical port assignment
+			reg = <2000 100>;
+			interrupts = <2 1 0>;
+			interrupt-parent = <500>;
+		};
+
+		// PSC2 in spi mode example
+		spi@2200 {		// PSC2
+			device_type = "spi";
+			compatible = "mpc5200-psc-spi\0mpc52xx-psc-spi";
+			reg = <2200 100>;
+			interrupts = <2 2 0>;
+			interrupt-parent = <500>;
+		};
+
+		// PSC3 in CODEC mode example
+		i2s@2400 {		// PSC3
+			device_type = "sound";
+			compatible = "mpc5200-psc-i2s\0mpc52xx-psc-i2s";
+			reg = <2400 100>;
+			interrupts = <2 3 0>;
+			interrupt-parent = <500>;
+		};
+
+		// PSC4 unconfigured
+		//serial@2600 {		// PSC4
+		//	device_type = "serial";
+		//	compatible = "mpc5200-psc-uart\0mpc52xx-psc-uart";
+		//	reg = <2600 100>;
+		//	interrupts = <2 b 0>;
+		//	interrupt-parent = <500>;
+		//};
+
+		// PSC5 unconfigured
+		//serial@2800 {		// PSC5
+		//	device_type = "serial";
+		//	compatible = "mpc5200-psc-uart\0mpc52xx-psc-uart";
+		//	reg = <2800 100>;
+		//	interrupts = <2 c 0>;
+		//	interrupt-parent = <500>;
+		//};
+
+		// PSC6 in AC97 mode example
+		ac97@2c00 {		// PSC6
+			device_type = "sound";
+			compatible = "mpc5200-psc-ac97\0mpc52xx-psc-ac97";
+			reg = <2c00 100>;
+			interrupts = <2 4 0>;
+			interrupt-parent = <500>;
+		};
+
+		ethernet@3000 {
+			device_type = "network";
+			compatible = "mpc5200-fec\0mpc52xx-fec";
+			reg = <3000 800>;
+			mac-address = [ 02 03 04 05 06 07 ]; // Bad!
+			interrupts = <2 5 0>;
+			interrupt-parent = <500>;
+		};
+
+		ata@3a00 {
+			device_type = "ata";
+			compatible = "mpc5200-ata\0mpc52xx-ata";
+			reg = <3a00 100>;
+			interrupts = <2 7 0>;
+			interrupt-parent = <500>;
+		};
+
+		i2c@3d00 {
+			device_type = "i2c";
+			compatible = "mpc5200-i2c\0mpc52xx-i2c";
+			reg = <3d00 40>;
+			interrupts = <2 f 0>;
+			interrupt-parent = <500>;
+		};
+
+		i2c@3d40 {
+			device_type = "i2c";
+			compatible = "mpc5200-i2c\0mpc52xx-i2c";
+			reg = <3d40 40>;
+			interrupts = <2 10 0>;
+			interrupt-parent = <500>;
+		};
+		sram@8000 {
+			device_type = "sram";
+			compatible = "mpc5200-sram\0mpc52xx-sram\0sram";
+			reg = <8000 4000>;
+		};
+	};
+};
diff --git a/arch/powerpc/boot/dts/lite5200b.dts b/arch/powerpc/boot/dts/lite5200b.dts
new file mode 100644
index 000000000000..1aabee432d86
--- /dev/null
+++ b/arch/powerpc/boot/dts/lite5200b.dts
@@ -0,0 +1,318 @@
+/*
+ * Lite5200B board Device Tree Source
+ *
+ * Copyright 2006 Secret Lab Technologies Ltd.
+ * Grant Likely <grant.likely@secretlab.ca>
+ *
+ * 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;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+/ {
+	model = "Lite5200b";
+	compatible = "lite5200b\0lite52xx\0mpc5200b\0mpc52xx";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#cpus = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,5200@0 {
+			device_type = "cpu";
+			reg = <0>;
+			d-cache-line-size = <20>;
+			i-cache-line-size = <20>;
+			d-cache-size = <4000>;		// L1, 16K
+			i-cache-size = <4000>;		// L1, 16K
+			timebase-frequency = <0>;	// from bootloader
+			bus-frequency = <0>;		// from bootloader
+			clock-frequency = <0>;		// from bootloader
+			32-bit;
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <00000000 10000000>;	// 256MB
+	};
+
+	soc5200@f0000000 {
+		#interrupt-cells = <3>;
+		device_type = "soc";
+		ranges = <0 f0000000 f0010000>;
+		reg = <f0000000 00010000>;
+		bus-frequency = <0>;		// from bootloader
+
+		cdm@200 {
+			compatible = "mpc5200b-cdm\0mpc52xx-cdm";
+			reg = <200 38>;
+		};
+
+		pic@500 {
+			// 5200 interrupts are encoded into two levels;
+			linux,phandle = <500>;
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			device_type = "interrupt-controller";
+			compatible = "mpc5200b-pic\0mpc52xx-pic";
+			reg = <500 80>;
+			built-in;
+		};
+
+		gpt@600 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <600 10>;
+			interrupts = <1 9 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@610 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <610 10>;
+			interrupts = <1 a 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@620 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <620 10>;
+			interrupts = <1 b 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@630 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <630 10>;
+			interrupts = <1 c 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@640 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <640 10>;
+			interrupts = <1 d 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@650 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <650 10>;
+			interrupts = <1 e 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@660 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <660 10>;
+			interrupts = <1 f 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpt@670 {	// General Purpose Timer
+			compatible = "mpc5200b-gpt\0mpc52xx-gpt";
+			device_type = "gpt";
+			reg = <670 10>;
+			interrupts = <1 10 0>;
+			interrupt-parent = <500>;
+		};
+
+		rtc@800 {	// Real time clock
+			compatible = "mpc5200b-rtc\0mpc52xx-rtc";
+			device_type = "rtc";
+			reg = <800 100>;
+			interrupts = <1 5 0 1 6 0>;
+			interrupt-parent = <500>;
+		};
+
+		mscan@900 {
+			device_type = "mscan";
+			compatible = "mpc5200b-mscan\0mpc52xx-mscan";
+			interrupts = <2 11 0>;
+			interrupt-parent = <500>;
+			reg = <900 80>;
+		};
+
+		mscan@980 {
+			device_type = "mscan";
+			compatible = "mpc5200b-mscan\0mpc52xx-mscan";
+			interrupts = <1 12 0>;
+			interrupt-parent = <500>;
+			reg = <980 80>;
+		};
+
+		gpio@b00 {
+			compatible = "mpc5200b-gpio\0mpc52xx-gpio";
+			reg = <b00 40>;
+			interrupts = <1 7 0>;
+			interrupt-parent = <500>;
+		};
+
+		gpio-wkup@b00 {
+			compatible = "mpc5200b-gpio-wkup\0mpc52xx-gpio-wkup";
+			reg = <c00 40>;
+			interrupts = <1 8 0 0 3 0>;
+			interrupt-parent = <500>;
+		};
+
+		pci@0d00 {
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			device_type = "pci";
+			compatible = "mpc5200b-pci\0mpc52xx-pci";
+			reg = <d00 100>;
+			interrupt-map-mask = <f800 0 0 7>;
+			interrupt-map = <c000 0 0 1 500 0 0 3 // 1st slot
+			                 c000 0 0 2 500 1 1 3
+			                 c000 0 0 3 500 1 2 3
+			                 c000 0 0 4 500 1 3 3
+
+			                 c800 0 0 1 500 1 1 3 // 2nd slot
+			                 c800 0 0 2 500 1 2 3
+			                 c800 0 0 3 500 1 3 3
+			                 c800 0 0 4 500 0 0 3>;
+			clock-frequency = <0>; // From boot loader
+			interrupts = <2 8 0 2 9 0 2 a 0>;
+			interrupt-parent = <500>;
+			bus-range = <0 0>;
+			ranges = <42000000 0 80000000 80000000 0 20000000
+			          02000000 0 a0000000 a0000000 0 10000000
+			          01000000 0 00000000 b0000000 0 01000000>;
+		};
+
+		spi@f00 {
+			device_type = "spi";
+			compatible = "mpc5200b-spi\0mpc52xx-spi";
+			reg = <f00 20>;
+			interrupts = <2 d 0 2 e 0>;
+			interrupt-parent = <500>;
+		};
+
+		usb@1000 {
+			device_type = "usb-ohci-be";
+			compatible = "mpc5200b-ohci\0mpc52xx-ohci\0ohci-be";
+			reg = <1000 ff>;
+			interrupts = <2 6 0>;
+			interrupt-parent = <500>;
+		};
+
+		bestcomm@1200 {
+			device_type = "dma-controller";
+			compatible = "mpc5200b-bestcomm\0mpc52xx-bestcomm";
+			reg = <1200 80>;
+			interrupts = <3 0 0  3 1 0  3 2 0  3 3 0
+			              3 4 0  3 5 0  3 6 0  3 7 0
+			              3 8 0  3 9 0  3 a 0  3 b 0
+			              3 c 0  3 d 0  3 e 0  3 f 0>;
+			interrupt-parent = <500>;
+		};
+
+		xlb@1f00 {
+			compatible = "mpc5200b-xlb\0mpc52xx-xlb";
+			reg = <1f00 100>;
+		};
+
+		serial@2000 {		// PSC1
+			device_type = "serial";
+			compatible = "mpc5200b-psc-uart\0mpc52xx-psc-uart";
+			port-number = <0>;  // Logical port assignment
+			reg = <2000 100>;
+			interrupts = <2 1 0>;
+			interrupt-parent = <500>;
+		};
+
+		// PSC2 in spi mode example
+		spi@2200 {		// PSC2
+			device_type = "spi";
+			compatible = "mpc5200b-psc-spi\0mpc52xx-psc-spi";
+			reg = <2200 100>;
+			interrupts = <2 2 0>;
+			interrupt-parent = <500>;
+		};
+
+		// PSC3 in CODEC mode example
+		i2s@2400 {		// PSC3
+			device_type = "sound";
+			compatible = "mpc5200b-psc-i2s\0mpc52xx-psc-i2s";
+			reg = <2400 100>;
+			interrupts = <2 3 0>;
+			interrupt-parent = <500>;
+		};
+
+		// PSC4 unconfigured
+		//serial@2600 {		// PSC4
+		//	device_type = "serial";
+		//	compatible = "mpc5200b-psc-uart\0mpc52xx-psc-uart";
+		//	reg = <2600 100>;
+		//	interrupts = <2 b 0>;
+		//	interrupt-parent = <500>;
+		//};
+
+		// PSC5 unconfigured
+		//serial@2800 {		// PSC5
+		//	device_type = "serial";
+		//	compatible = "mpc5200b-psc-uart\0mpc52xx-psc-uart";
+		//	reg = <2800 100>;
+		//	interrupts = <2 c 0>;
+		//	interrupt-parent = <500>;
+		//};
+
+		// PSC6 in AC97 mode example
+		ac97@2c00 {		// PSC6
+			device_type = "sound";
+			compatible = "mpc5200b-psc-ac97\0mpc52xx-psc-ac97";
+			reg = <2c00 100>;
+			interrupts = <2 4 0>;
+			interrupt-parent = <500>;
+		};
+
+		ethernet@3000 {
+			device_type = "network";
+			compatible = "mpc5200b-fec\0mpc52xx-fec";
+			reg = <3000 800>;
+			mac-address = [ 02 03 04 05 06 07 ]; // Bad!
+			interrupts = <2 5 0>;
+			interrupt-parent = <500>;
+		};
+
+		ata@3a00 {
+			device_type = "ata";
+			compatible = "mpc5200b-ata\0mpc52xx-ata";
+			reg = <3a00 100>;
+			interrupts = <2 7 0>;
+			interrupt-parent = <500>;
+		};
+
+		i2c@3d00 {
+			device_type = "i2c";
+			compatible = "mpc5200b-i2c\0mpc52xx-i2c";
+			reg = <3d00 40>;
+			interrupts = <2 f 0>;
+			interrupt-parent = <500>;
+		};
+
+		i2c@3d40 {
+			device_type = "i2c";
+			compatible = "mpc5200b-i2c\0mpc52xx-i2c";
+			reg = <3d40 40>;
+			interrupts = <2 10 0>;
+			interrupt-parent = <500>;
+		};
+		sram@8000 {
+			device_type = "sram";
+			compatible = "mpc5200b-sram\0mpc52xx-sram\0sram";
+			reg = <8000 4000>;
+		};
+	};
+};
diff --git a/arch/powerpc/boot/dts/mpc7448hpc2.dts b/arch/powerpc/boot/dts/mpc7448hpc2.dts
index d7b985e6bd2f..c4d9562cbaad 100644
--- a/arch/powerpc/boot/dts/mpc7448hpc2.dts
+++ b/arch/powerpc/boot/dts/mpc7448hpc2.dts
@@ -161,29 +161,41 @@
 			interrupt-map = <
 
 				/* IDSEL 0x11 */
-				0800 0 0 1 7400 24 0
-				0800 0 0 2 7400 25 0
-				0800 0 0 3 7400 26 0
-				0800 0 0 4 7400 27 0
+				0800 0 0 1 1180 24 0
+				0800 0 0 2 1180 25 0
+				0800 0 0 3 1180 26 0
+				0800 0 0 4 1180 27 0
 
 				/* IDSEL 0x12 */
-				1000 0 0 1 7400 25 0
-				1000 0 0 2 7400 26 0
-				1000 0 0 3 7400 27 0
-				1000 0 0 4 7400 24 0
+				1000 0 0 1 1180 25 0
+				1000 0 0 2 1180 26 0
+				1000 0 0 3 1180 27 0
+				1000 0 0 4 1180 24 0
 
 				/* IDSEL 0x13 */
-				1800 0 0 1 7400 26 0
-				1800 0 0 2 7400 27 0
-				1800 0 0 3 7400 24 0
-				1800 0 0 4 7400 25 0
+				1800 0 0 1 1180 26 0
+				1800 0 0 2 1180 27 0
+				1800 0 0 3 1180 24 0
+				1800 0 0 4 1180 25 0
 
 				/* IDSEL 0x14 */
-				2000 0 0 1 7400 27 0
-				2000 0 0 2 7400 24 0
-				2000 0 0 3 7400 25 0
-				2000 0 0 4 7400 26 0
+				2000 0 0 1 1180 27 0
+				2000 0 0 2 1180 24 0
+				2000 0 0 3 1180 25 0
+				2000 0 0 4 1180 26 0
 				>;
+			router@1180 {
+				linux,phandle = <1180>;
+				clock-frequency = <0>;
+				interrupt-controller;
+				device_type = "pic-router";
+				#address-cells = <0>;
+				#interrupt-cells = <2>;
+				built-in;
+				big-endian;
+				interrupts = <17 2>;
+				interrupt-parent = <7400>;
+			};
 		};
 	};
 
diff --git a/arch/powerpc/boot/flatdevtree.c b/arch/powerpc/boot/flatdevtree.c
new file mode 100644
index 000000000000..c76c194715b2
--- /dev/null
+++ b/arch/powerpc/boot/flatdevtree.c
@@ -0,0 +1,880 @@
+/*
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright Pantelis Antoniou 2006
+ * Copyright (C) IBM Corporation 2006
+ *
+ * Authors: Pantelis Antoniou <pantelis@embeddedalley.com>
+ *	    Hollis Blanchard <hollisb@us.ibm.com>
+ *	    Mark A. Greer <mgreer@mvista.com>
+ *	    Paul Mackerras <paulus@samba.org>
+ */
+
+#include <string.h>
+#include <stddef.h>
+#include "flatdevtree.h"
+#include "flatdevtree_env.h"
+
+#define _ALIGN(x, al)	(((x) + (al) - 1) & ~((al) - 1))
+
+/* Routines for keeping node ptrs returned by ft_find_device current */
+/* First entry not used b/c it would return 0 and be taken as NULL/error */
+static void *ft_node_add(struct ft_cxt *cxt, char *node)
+{
+	unsigned int i;
+
+	for (i = 1; i < cxt->nodes_used; i++)	/* already there? */
+		if (cxt->node_tbl[i] == node)
+			return (void *)i;
+
+	if (cxt->nodes_used < cxt->node_max) {
+		cxt->node_tbl[cxt->nodes_used] = node;
+		return (void *)cxt->nodes_used++;
+	}
+
+	return NULL;
+}
+
+static char *ft_node_ph2node(struct ft_cxt *cxt, const void *phandle)
+{
+	unsigned int i = (unsigned int)phandle;
+
+	if (i < cxt->nodes_used)
+		return cxt->node_tbl[i];
+	return NULL;
+}
+
+static void ft_node_update_before(struct ft_cxt *cxt, char *addr, int shift)
+{
+	unsigned int i;
+
+	if (shift == 0)
+		return;
+
+	for (i = 1; i < cxt->nodes_used; i++)
+		if (cxt->node_tbl[i] < addr)
+			cxt->node_tbl[i] += shift;
+}
+
+static void ft_node_update_after(struct ft_cxt *cxt, char *addr, int shift)
+{
+	unsigned int i;
+
+	if (shift == 0)
+		return;
+
+	for (i = 1; i < cxt->nodes_used; i++)
+		if (cxt->node_tbl[i] >= addr)
+			cxt->node_tbl[i] += shift;
+}
+
+/* Struct used to return info from ft_next() */
+struct ft_atom {
+	u32 tag;
+	const char *name;
+	void *data;
+	u32 size;
+};
+
+/* Set ptrs to current one's info; return addr of next one */
+static char *ft_next(struct ft_cxt *cxt, char *p, struct ft_atom *ret)
+{
+	u32 sz;
+
+	if (p >= cxt->rgn[FT_STRUCT].start + cxt->rgn[FT_STRUCT].size)
+		return NULL;
+
+	ret->tag = be32_to_cpu(*(u32 *) p);
+	p += 4;
+
+	switch (ret->tag) {	/* Tag */
+	case OF_DT_BEGIN_NODE:
+		ret->name = p;
+		ret->data = (void *)(p - 4);	/* start of node */
+		p += _ALIGN(strlen(p) + 1, 4);
+		break;
+	case OF_DT_PROP:
+		ret->size = sz = be32_to_cpu(*(u32 *) p);
+		ret->name = cxt->str_anchor + be32_to_cpu(*(u32 *) (p + 4));
+		ret->data = (void *)(p + 8);
+		p += 8 + _ALIGN(sz, 4);
+		break;
+	case OF_DT_END_NODE:
+	case OF_DT_NOP:
+		break;
+	case OF_DT_END:
+	default:
+		p = NULL;
+		break;
+	}
+
+	return p;
+}
+
+#define HDR_SIZE	_ALIGN(sizeof(struct boot_param_header), 8)
+#define EXPAND_INCR	1024	/* alloc this much extra when expanding */
+
+/* See if the regions are in the standard order and non-overlapping */
+static int ft_ordered(struct ft_cxt *cxt)
+{
+	char *p = (char *)cxt->bph + HDR_SIZE;
+	enum ft_rgn_id r;
+
+	for (r = FT_RSVMAP; r <= FT_STRINGS; ++r) {
+		if (p > cxt->rgn[r].start)
+			return 0;
+		p = cxt->rgn[r].start + cxt->rgn[r].size;
+	}
+	return p <= (char *)cxt->bph + cxt->max_size;
+}
+
+/* Copy the tree to a newly-allocated region and put things in order */
+static int ft_reorder(struct ft_cxt *cxt, int nextra)
+{
+	unsigned long tot;
+	enum ft_rgn_id r;
+	char *p, *pend;
+	int stroff;
+
+	tot = HDR_SIZE + EXPAND_INCR;
+	for (r = FT_RSVMAP; r <= FT_STRINGS; ++r)
+		tot += cxt->rgn[r].size;
+	if (nextra > 0)
+		tot += nextra;
+	tot = _ALIGN(tot, 8);
+
+	if (!cxt->realloc)
+		return 0;
+	p = cxt->realloc(NULL, tot);
+	if (!p)
+		return 0;
+
+	memcpy(p, cxt->bph, sizeof(struct boot_param_header));
+	/* offsets get fixed up later */
+
+	cxt->bph = (struct boot_param_header *)p;
+	cxt->max_size = tot;
+	pend = p + tot;
+	p += HDR_SIZE;
+
+	memcpy(p, cxt->rgn[FT_RSVMAP].start, cxt->rgn[FT_RSVMAP].size);
+	cxt->rgn[FT_RSVMAP].start = p;
+	p += cxt->rgn[FT_RSVMAP].size;
+
+	memcpy(p, cxt->rgn[FT_STRUCT].start, cxt->rgn[FT_STRUCT].size);
+	ft_node_update_after(cxt, cxt->rgn[FT_STRUCT].start,
+			p - cxt->rgn[FT_STRUCT].start);
+	cxt->p += p - cxt->rgn[FT_STRUCT].start;
+	cxt->rgn[FT_STRUCT].start = p;
+
+	p = pend - cxt->rgn[FT_STRINGS].size;
+	memcpy(p, cxt->rgn[FT_STRINGS].start, cxt->rgn[FT_STRINGS].size);
+	stroff = cxt->str_anchor - cxt->rgn[FT_STRINGS].start;
+	cxt->rgn[FT_STRINGS].start = p;
+	cxt->str_anchor = p + stroff;
+
+	cxt->isordered = 1;
+	return 1;
+}
+
+static inline char *prev_end(struct ft_cxt *cxt, enum ft_rgn_id r)
+{
+	if (r > FT_RSVMAP)
+		return cxt->rgn[r - 1].start + cxt->rgn[r - 1].size;
+	return (char *)cxt->bph + HDR_SIZE;
+}
+
+static inline char *next_start(struct ft_cxt *cxt, enum ft_rgn_id r)
+{
+	if (r < FT_STRINGS)
+		return cxt->rgn[r + 1].start;
+	return (char *)cxt->bph + cxt->max_size;
+}
+
+/*
+ * See if we can expand region rgn by nextra bytes by using up
+ * free space after or before the region.
+ */
+static int ft_shuffle(struct ft_cxt *cxt, char **pp, enum ft_rgn_id rgn,
+		int nextra)
+{
+	char *p = *pp;
+	char *rgn_start, *rgn_end;
+
+	rgn_start = cxt->rgn[rgn].start;
+	rgn_end = rgn_start + cxt->rgn[rgn].size;
+	if (nextra <= 0 || rgn_end + nextra <= next_start(cxt, rgn)) {
+		/* move following stuff */
+		if (p < rgn_end) {
+			if (nextra < 0)
+				memmove(p, p - nextra, rgn_end - p + nextra);
+			else
+				memmove(p + nextra, p, rgn_end - p);
+			if (rgn == FT_STRUCT)
+				ft_node_update_after(cxt, p, nextra);
+		}
+		cxt->rgn[rgn].size += nextra;
+		if (rgn == FT_STRINGS)
+			/* assumes strings only added at beginning */
+			cxt->str_anchor += nextra;
+		return 1;
+	}
+	if (prev_end(cxt, rgn) <= rgn_start - nextra) {
+		/* move preceding stuff */
+		if (p > rgn_start) {
+			memmove(rgn_start - nextra, rgn_start, p - rgn_start);
+			if (rgn == FT_STRUCT)
+				ft_node_update_before(cxt, p, -nextra);
+		}
+		*p -= nextra;
+		cxt->rgn[rgn].start -= nextra;
+		cxt->rgn[rgn].size += nextra;
+		return 1;
+	}
+	return 0;
+}
+
+static int ft_make_space(struct ft_cxt *cxt, char **pp, enum ft_rgn_id rgn,
+			 int nextra)
+{
+	unsigned long size, ssize, tot;
+	char *str, *next;
+	enum ft_rgn_id r;
+
+	if (!cxt->isordered && !ft_reorder(cxt, nextra))
+		return 0;
+	if (ft_shuffle(cxt, pp, rgn, nextra))
+		return 1;
+
+	/* See if there is space after the strings section */
+	ssize = cxt->rgn[FT_STRINGS].size;
+	if (cxt->rgn[FT_STRINGS].start + ssize
+			< (char *)cxt->bph + cxt->max_size) {
+		/* move strings up as far as possible */
+		str = (char *)cxt->bph + cxt->max_size - ssize;
+		cxt->str_anchor += str - cxt->rgn[FT_STRINGS].start;
+		memmove(str, cxt->rgn[FT_STRINGS].start, ssize);
+		cxt->rgn[FT_STRINGS].start = str;
+		/* enough space now? */
+		if (rgn >= FT_STRUCT && ft_shuffle(cxt, pp, rgn, nextra))
+			return 1;
+	}
+
+	/* how much total free space is there following this region? */
+	tot = 0;
+	for (r = rgn; r < FT_STRINGS; ++r) {
+		char *r_end = cxt->rgn[r].start + cxt->rgn[r].size;
+		tot += next_start(cxt, rgn) - r_end;
+	}
+
+	/* cast is to shut gcc up; we know nextra >= 0 */
+	if (tot < (unsigned int)nextra) {
+		/* have to reallocate */
+		char *newp, *new_start;
+		int shift;
+
+		if (!cxt->realloc)
+			return 0;
+		size = _ALIGN(cxt->max_size + (nextra - tot) + EXPAND_INCR, 8);
+		newp = cxt->realloc(cxt->bph, size);
+		if (!newp)
+			return 0;
+		cxt->max_size = size;
+		shift = newp - (char *)cxt->bph;
+
+		if (shift) { /* realloc can return same addr */
+			cxt->bph = (struct boot_param_header *)newp;
+			ft_node_update_after(cxt, cxt->rgn[FT_STRUCT].start,
+					shift);
+			for (r = FT_RSVMAP; r <= FT_STRINGS; ++r) {
+				new_start = cxt->rgn[r].start + shift;
+				cxt->rgn[r].start = new_start;
+			}
+			*pp += shift;
+			cxt->str_anchor += shift;
+		}
+
+		/* move strings up to the end */
+		str = newp + size - ssize;
+		cxt->str_anchor += str - cxt->rgn[FT_STRINGS].start;
+		memmove(str, cxt->rgn[FT_STRINGS].start, ssize);
+		cxt->rgn[FT_STRINGS].start = str;
+
+		if (ft_shuffle(cxt, pp, rgn, nextra))
+			return 1;
+	}
+
+	/* must be FT_RSVMAP and we need to move FT_STRUCT up */
+	if (rgn == FT_RSVMAP) {
+		next = cxt->rgn[FT_RSVMAP].start + cxt->rgn[FT_RSVMAP].size
+			+ nextra;
+		ssize = cxt->rgn[FT_STRUCT].size;
+		if (next + ssize >= cxt->rgn[FT_STRINGS].start)
+			return 0;	/* "can't happen" */
+		memmove(next, cxt->rgn[FT_STRUCT].start, ssize);
+		ft_node_update_after(cxt, cxt->rgn[FT_STRUCT].start, nextra);
+		cxt->rgn[FT_STRUCT].start = next;
+
+		if (ft_shuffle(cxt, pp, rgn, nextra))
+			return 1;
+	}
+
+	return 0;		/* "can't happen" */
+}
+
+static void ft_put_word(struct ft_cxt *cxt, u32 v)
+{
+	*(u32 *) cxt->p = cpu_to_be32(v);
+	cxt->p += 4;
+}
+
+static void ft_put_bin(struct ft_cxt *cxt, const void *data, unsigned int sz)
+{
+	unsigned long sza = _ALIGN(sz, 4);
+
+	/* zero out the alignment gap if necessary */
+	if (sz < sza)
+		*(u32 *) (cxt->p + sza - 4) = 0;
+
+	/* copy in the data */
+	memcpy(cxt->p, data, sz);
+
+	cxt->p += sza;
+}
+
+int ft_begin_node(struct ft_cxt *cxt, const char *name)
+{
+	unsigned long nlen = strlen(name) + 1;
+	unsigned long len = 8 + _ALIGN(nlen, 4);
+
+	if (!ft_make_space(cxt, &cxt->p, FT_STRUCT, len))
+		return -1;
+	ft_put_word(cxt, OF_DT_BEGIN_NODE);
+	ft_put_bin(cxt, name, strlen(name) + 1);
+	return 0;
+}
+
+void ft_end_node(struct ft_cxt *cxt)
+{
+	ft_put_word(cxt, OF_DT_END_NODE);
+}
+
+void ft_nop(struct ft_cxt *cxt)
+{
+	if (ft_make_space(cxt, &cxt->p, FT_STRUCT, 4))
+		ft_put_word(cxt, OF_DT_NOP);
+}
+
+#define NO_STRING	0x7fffffff
+
+static int lookup_string(struct ft_cxt *cxt, const char *name)
+{
+	char *p, *end;
+
+	p = cxt->rgn[FT_STRINGS].start;
+	end = p + cxt->rgn[FT_STRINGS].size;
+	while (p < end) {
+		if (strcmp(p, (char *)name) == 0)
+			return p - cxt->str_anchor;
+		p += strlen(p) + 1;
+	}
+
+	return NO_STRING;
+}
+
+/* lookup string and insert if not found */
+static int map_string(struct ft_cxt *cxt, const char *name)
+{
+	int off;
+	char *p;
+
+	off = lookup_string(cxt, name);
+	if (off != NO_STRING)
+		return off;
+	p = cxt->rgn[FT_STRINGS].start;
+	if (!ft_make_space(cxt, &p, FT_STRINGS, strlen(name) + 1))
+		return NO_STRING;
+	strcpy(p, name);
+	return p - cxt->str_anchor;
+}
+
+int ft_prop(struct ft_cxt *cxt, const char *name, const void *data,
+		unsigned int sz)
+{
+	int off, len;
+
+	off = lookup_string(cxt, name);
+	if (off == NO_STRING)
+		return -1;
+
+	len = 12 + _ALIGN(sz, 4);
+	if (!ft_make_space(cxt, &cxt->p, FT_STRUCT, len))
+		return -1;
+
+	ft_put_word(cxt, OF_DT_PROP);
+	ft_put_word(cxt, sz);
+	ft_put_word(cxt, off);
+	ft_put_bin(cxt, data, sz);
+	return 0;
+}
+
+int ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str)
+{
+	return ft_prop(cxt, name, str, strlen(str) + 1);
+}
+
+int ft_prop_int(struct ft_cxt *cxt, const char *name, unsigned int val)
+{
+	u32 v = cpu_to_be32((u32) val);
+
+	return ft_prop(cxt, name, &v, 4);
+}
+
+/* Calculate the size of the reserved map */
+static unsigned long rsvmap_size(struct ft_cxt *cxt)
+{
+	struct ft_reserve *res;
+
+	res = (struct ft_reserve *)cxt->rgn[FT_RSVMAP].start;
+	while (res->start || res->len)
+		++res;
+	return (char *)(res + 1) - cxt->rgn[FT_RSVMAP].start;
+}
+
+/* Calculate the size of the struct region by stepping through it */
+static unsigned long struct_size(struct ft_cxt *cxt)
+{
+	char *p = cxt->rgn[FT_STRUCT].start;
+	char *next;
+	struct ft_atom atom;
+
+	/* make check in ft_next happy */
+	if (cxt->rgn[FT_STRUCT].size == 0)
+		cxt->rgn[FT_STRUCT].size = 0xfffffffful - (unsigned long)p;
+
+	while ((next = ft_next(cxt, p, &atom)) != NULL)
+		p = next;
+	return p + 4 - cxt->rgn[FT_STRUCT].start;
+}
+
+/* add `adj' on to all string offset values in the struct area */
+static void adjust_string_offsets(struct ft_cxt *cxt, int adj)
+{
+	char *p = cxt->rgn[FT_STRUCT].start;
+	char *next;
+	struct ft_atom atom;
+	int off;
+
+	while ((next = ft_next(cxt, p, &atom)) != NULL) {
+		if (atom.tag == OF_DT_PROP) {
+			off = be32_to_cpu(*(u32 *) (p + 8));
+			*(u32 *) (p + 8) = cpu_to_be32(off + adj);
+		}
+		p = next;
+	}
+}
+
+/* start construction of the flat OF tree from scratch */
+void ft_begin(struct ft_cxt *cxt, void *blob, unsigned int max_size,
+		void *(*realloc_fn) (void *, unsigned long))
+{
+	struct boot_param_header *bph = blob;
+	char *p;
+	struct ft_reserve *pres;
+
+	/* clear the cxt */
+	memset(cxt, 0, sizeof(*cxt));
+
+	cxt->bph = bph;
+	cxt->max_size = max_size;
+	cxt->realloc = realloc_fn;
+	cxt->isordered = 1;
+
+	/* zero everything in the header area */
+	memset(bph, 0, sizeof(*bph));
+
+	bph->magic = cpu_to_be32(OF_DT_HEADER);
+	bph->version = cpu_to_be32(0x10);
+	bph->last_comp_version = cpu_to_be32(0x10);
+
+	/* start pointers */
+	cxt->rgn[FT_RSVMAP].start = p = blob + HDR_SIZE;
+	cxt->rgn[FT_RSVMAP].size = sizeof(struct ft_reserve);
+	pres = (struct ft_reserve *)p;
+	cxt->rgn[FT_STRUCT].start = p += sizeof(struct ft_reserve);
+	cxt->rgn[FT_STRUCT].size = 4;
+	cxt->rgn[FT_STRINGS].start = blob + max_size;
+	cxt->rgn[FT_STRINGS].size = 0;
+
+	/* init rsvmap and struct */
+	pres->start = 0;
+	pres->len = 0;
+	*(u32 *) p = cpu_to_be32(OF_DT_END);
+
+	cxt->str_anchor = blob;
+}
+
+/* open up an existing blob to be examined or modified */
+int ft_open(struct ft_cxt *cxt, void *blob, unsigned int max_size,
+		unsigned int max_find_device,
+		void *(*realloc_fn) (void *, unsigned long))
+{
+	struct boot_param_header *bph = blob;
+
+	/* can't cope with version < 16 */
+	if (be32_to_cpu(bph->version) < 16)
+		return -1;
+
+	/* clear the cxt */
+	memset(cxt, 0, sizeof(*cxt));
+
+	/* alloc node_tbl to track node ptrs returned by ft_find_device */
+	++max_find_device;
+	cxt->node_tbl = realloc_fn(NULL, max_find_device * sizeof(char *));
+	if (!cxt->node_tbl)
+		return -1;
+	memset(cxt->node_tbl, 0, max_find_device * sizeof(char *));
+	cxt->node_max = max_find_device;
+	cxt->nodes_used = 1;	/* don't use idx 0 b/c looks like NULL */
+
+	cxt->bph = bph;
+	cxt->max_size = max_size;
+	cxt->realloc = realloc_fn;
+
+	cxt->rgn[FT_RSVMAP].start = blob + be32_to_cpu(bph->off_mem_rsvmap);
+	cxt->rgn[FT_RSVMAP].size = rsvmap_size(cxt);
+	cxt->rgn[FT_STRUCT].start = blob + be32_to_cpu(bph->off_dt_struct);
+	cxt->rgn[FT_STRUCT].size = struct_size(cxt);
+	cxt->rgn[FT_STRINGS].start = blob + be32_to_cpu(bph->off_dt_strings);
+	cxt->rgn[FT_STRINGS].size = be32_to_cpu(bph->dt_strings_size);
+	/* Leave as '0' to force first ft_make_space call to do a ft_reorder
+	 * and move dt to an area allocated by realloc.
+	cxt->isordered = ft_ordered(cxt);
+	*/
+
+	cxt->p = cxt->rgn[FT_STRUCT].start;
+	cxt->str_anchor = cxt->rgn[FT_STRINGS].start;
+
+	return 0;
+}
+
+/* add a reserver physical area to the rsvmap */
+int ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size)
+{
+	char *p;
+	struct ft_reserve *pres;
+
+	p = cxt->rgn[FT_RSVMAP].start + cxt->rgn[FT_RSVMAP].size
+		- sizeof(struct ft_reserve);
+	if (!ft_make_space(cxt, &p, FT_RSVMAP, sizeof(struct ft_reserve)))
+		return -1;
+
+	pres = (struct ft_reserve *)p;
+	pres->start = cpu_to_be64(physaddr);
+	pres->len = cpu_to_be64(size);
+
+	return 0;
+}
+
+void ft_begin_tree(struct ft_cxt *cxt)
+{
+	cxt->p = cxt->rgn[FT_STRUCT].start;
+}
+
+void ft_end_tree(struct ft_cxt *cxt)
+{
+	struct boot_param_header *bph = cxt->bph;
+	char *p, *oldstr, *str, *endp;
+	unsigned long ssize;
+	int adj;
+
+	if (!cxt->isordered)
+		return;		/* we haven't touched anything */
+
+	/* adjust string offsets */
+	oldstr = cxt->rgn[FT_STRINGS].start;
+	adj = cxt->str_anchor - oldstr;
+	if (adj)
+		adjust_string_offsets(cxt, adj);
+
+	/* make strings end on 8-byte boundary */
+	ssize = cxt->rgn[FT_STRINGS].size;
+	endp = (char *)_ALIGN((unsigned long)cxt->rgn[FT_STRUCT].start
+			+ cxt->rgn[FT_STRUCT].size + ssize, 8);
+	str = endp - ssize;
+
+	/* move strings down to end of structs */
+	memmove(str, oldstr, ssize);
+	cxt->str_anchor = str;
+	cxt->rgn[FT_STRINGS].start = str;
+
+	/* fill in header fields */
+	p = (char *)bph;
+	bph->totalsize = cpu_to_be32(endp - p);
+	bph->off_mem_rsvmap = cpu_to_be32(cxt->rgn[FT_RSVMAP].start - p);
+	bph->off_dt_struct = cpu_to_be32(cxt->rgn[FT_STRUCT].start - p);
+	bph->off_dt_strings = cpu_to_be32(cxt->rgn[FT_STRINGS].start - p);
+	bph->dt_strings_size = cpu_to_be32(ssize);
+}
+
+void *ft_find_device(struct ft_cxt *cxt, const char *srch_path)
+{
+	char *node;
+
+	/* require absolute path */
+	if (srch_path[0] != '/')
+		return NULL;
+	node = ft_find_descendent(cxt, cxt->rgn[FT_STRUCT].start, srch_path);
+	return ft_node_add(cxt, node);
+}
+
+void *ft_find_descendent(struct ft_cxt *cxt, void *top, const char *srch_path)
+{
+	struct ft_atom atom;
+	char *p;
+	const char *cp, *q;
+	int cl;
+	int depth = -1;
+	int dmatch = 0;
+	const char *path_comp[FT_MAX_DEPTH];
+
+	cp = srch_path;
+	cl = 0;
+	p = top;
+
+	while ((p = ft_next(cxt, p, &atom)) != NULL) {
+		switch (atom.tag) {
+		case OF_DT_BEGIN_NODE:
+			++depth;
+			if (depth != dmatch)
+				break;
+			cxt->genealogy[depth] = atom.data;
+			cxt->genealogy[depth + 1] = NULL;
+			if (depth && !(strncmp(atom.name, cp, cl) == 0
+					&& (atom.name[cl] == '/'
+						|| atom.name[cl] == '\0'
+						|| atom.name[cl] == '@')))
+				break;
+			path_comp[dmatch] = cp;
+			/* it matches so far, advance to next path component */
+			cp += cl;
+			/* skip slashes */
+			while (*cp == '/')
+				++cp;
+			/* we're done if this is the end of the string */
+			if (*cp == 0)
+				return atom.data;
+			/* look for end of this component */
+			q = strchr(cp, '/');
+			if (q)
+				cl = q - cp;
+			else
+				cl = strlen(cp);
+			++dmatch;
+			break;
+		case OF_DT_END_NODE:
+			if (depth == 0)
+				return NULL;
+			if (dmatch > depth) {
+				--dmatch;
+				cl = cp - path_comp[dmatch] - 1;
+				cp = path_comp[dmatch];
+				while (cl > 0 && cp[cl - 1] == '/')
+					--cl;
+			}
+			--depth;
+			break;
+		}
+	}
+	return NULL;
+}
+
+void *ft_get_parent(struct ft_cxt *cxt, const void *phandle)
+{
+	void *node;
+	int d;
+	struct ft_atom atom;
+	char *p;
+
+	node = ft_node_ph2node(cxt, phandle);
+	if (node == NULL)
+		return NULL;
+
+	for (d = 0; cxt->genealogy[d] != NULL; ++d)
+		if (cxt->genealogy[d] == node)
+			return cxt->genealogy[d > 0 ? d - 1 : 0];
+
+	/* have to do it the hard way... */
+	p = cxt->rgn[FT_STRUCT].start;
+	d = 0;
+	while ((p = ft_next(cxt, p, &atom)) != NULL) {
+		switch (atom.tag) {
+		case OF_DT_BEGIN_NODE:
+			cxt->genealogy[d] = atom.data;
+			if (node == atom.data) {
+				/* found it */
+				cxt->genealogy[d + 1] = NULL;
+				return d > 0 ? cxt->genealogy[d - 1] : node;
+			}
+			++d;
+			break;
+		case OF_DT_END_NODE:
+			--d;
+			break;
+		}
+	}
+	return NULL;
+}
+
+int ft_get_prop(struct ft_cxt *cxt, const void *phandle, const char *propname,
+		void *buf, const unsigned int buflen)
+{
+	struct ft_atom atom;
+	void *node;
+	char *p;
+	int depth;
+	unsigned int size;
+
+	node = ft_node_ph2node(cxt, phandle);
+	if (node == NULL)
+		return -1;
+
+	depth = 0;
+	p = (char *)node;
+
+	while ((p = ft_next(cxt, p, &atom)) != NULL) {
+		switch (atom.tag) {
+		case OF_DT_BEGIN_NODE:
+			++depth;
+			break;
+		case OF_DT_PROP:
+			if ((depth != 1) || strcmp(atom.name, propname))
+				break;
+			size = min(atom.size, buflen);
+			memcpy(buf, atom.data, size);
+			return atom.size;
+		case OF_DT_END_NODE:
+			if (--depth <= 0)
+				return -1;
+		}
+	}
+	return -1;
+}
+
+int ft_set_prop(struct ft_cxt *cxt, const void *phandle, const char *propname,
+		const void *buf, const unsigned int buflen)
+{
+	struct ft_atom atom;
+	void *node;
+	char *p, *next;
+	int nextra, depth;
+
+	node = ft_node_ph2node(cxt, phandle);
+	if (node == NULL)
+		return -1;
+
+	depth = 0;
+	p = node;
+
+	while ((next = ft_next(cxt, p, &atom)) != NULL) {
+		switch (atom.tag) {
+		case OF_DT_BEGIN_NODE:
+			++depth;
+			break;
+		case OF_DT_END_NODE:
+			if (--depth > 0)
+				break;
+			/* haven't found the property, insert here */
+			cxt->p = p;
+			return ft_prop(cxt, propname, buf, buflen);
+		case OF_DT_PROP:
+			if ((depth != 1) || strcmp(atom.name, propname))
+				break;
+			/* found an existing property, overwrite it */
+			nextra = _ALIGN(buflen, 4) - _ALIGN(atom.size, 4);
+			cxt->p = atom.data;
+			if (nextra && !ft_make_space(cxt, &cxt->p, FT_STRUCT,
+						nextra))
+				return -1;
+			*(u32 *) (cxt->p - 8) = cpu_to_be32(buflen);
+			ft_put_bin(cxt, buf, buflen);
+			return 0;
+		}
+		p = next;
+	}
+	return -1;
+}
+
+int ft_del_prop(struct ft_cxt *cxt, const void *phandle, const char *propname)
+{
+	struct ft_atom atom;
+	void *node;
+	char *p, *next;
+	int size;
+
+	node = ft_node_ph2node(cxt, phandle);
+	if (node == NULL)
+		return -1;
+
+	p = node;
+	while ((next = ft_next(cxt, p, &atom)) != NULL) {
+		switch (atom.tag) {
+		case OF_DT_BEGIN_NODE:
+		case OF_DT_END_NODE:
+			return -1;
+		case OF_DT_PROP:
+			if (strcmp(atom.name, propname))
+				break;
+			/* found the property, remove it */
+			size = 12 + -_ALIGN(atom.size, 4);
+			cxt->p = p;
+			if (!ft_make_space(cxt, &cxt->p, FT_STRUCT, -size))
+				return -1;
+			return 0;
+		}
+		p = next;
+	}
+	return -1;
+}
+
+void *ft_create_node(struct ft_cxt *cxt, const void *parent, const char *path)
+{
+	struct ft_atom atom;
+	char *p, *next;
+	int depth = 0;
+
+	p = cxt->rgn[FT_STRUCT].start;
+	while ((next = ft_next(cxt, p, &atom)) != NULL) {
+		switch (atom.tag) {
+		case OF_DT_BEGIN_NODE:
+			++depth;
+			if (depth == 1 && strcmp(atom.name, path) == 0)
+				/* duplicate node path, return error */
+				return NULL;
+			break;
+		case OF_DT_END_NODE:
+			--depth;
+			if (depth > 0)
+				break;
+			/* end of node, insert here */
+			cxt->p = p;
+			ft_begin_node(cxt, path);
+			ft_end_node(cxt);
+			return p;
+		}
+		p = next;
+	}
+	return NULL;
+}
diff --git a/arch/powerpc/boot/flatdevtree.h b/arch/powerpc/boot/flatdevtree.h
index 761c8dc84008..b9cd9f61f351 100644
--- a/arch/powerpc/boot/flatdevtree.h
+++ b/arch/powerpc/boot/flatdevtree.h
@@ -17,7 +17,7 @@
 #ifndef FLATDEVTREE_H
 #define FLATDEVTREE_H
 
-#include "types.h"
+#include "flatdevtree_env.h"
 
 /* Definitions used by the flattened device tree */
 #define OF_DT_HEADER            0xd00dfeed      /* marker */
@@ -43,4 +43,64 @@ struct boot_param_header {
 	u32 dt_strings_size;    /* size of the DT strings block */
 };
 
+struct ft_reserve {
+	u64 start;
+	u64 len;
+};
+
+struct ft_region {
+	char *start;
+	unsigned long size;
+};
+
+enum ft_rgn_id {
+	FT_RSVMAP,
+	FT_STRUCT,
+	FT_STRINGS,
+	FT_N_REGION
+};
+
+#define FT_MAX_DEPTH	50
+
+struct ft_cxt {
+	struct boot_param_header *bph;
+	int max_size;           /* maximum size of tree */
+	int isordered;		/* everything in standard order */
+	void *(*realloc)(void *, unsigned long);
+	char *str_anchor;
+	char *p;		/* current insertion point in structs */
+	struct ft_region rgn[FT_N_REGION];
+	void *genealogy[FT_MAX_DEPTH+1];
+	char **node_tbl;
+	unsigned int node_max;
+	unsigned int nodes_used;
+};
+
+int ft_begin_node(struct ft_cxt *cxt, const char *name);
+void ft_end_node(struct ft_cxt *cxt);
+
+void ft_begin_tree(struct ft_cxt *cxt);
+void ft_end_tree(struct ft_cxt *cxt);
+
+void ft_nop(struct ft_cxt *cxt);
+int ft_prop(struct ft_cxt *cxt, const char *name,
+	    const void *data, unsigned int sz);
+int ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str);
+int ft_prop_int(struct ft_cxt *cxt, const char *name, unsigned int val);
+void ft_begin(struct ft_cxt *cxt, void *blob, unsigned int max_size,
+	      void *(*realloc_fn)(void *, unsigned long));
+int ft_open(struct ft_cxt *cxt, void *blob, unsigned int max_size,
+		unsigned int max_find_device,
+		void *(*realloc_fn)(void *, unsigned long));
+int ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);
+
+void ft_dump_blob(const void *bphp);
+void ft_merge_blob(struct ft_cxt *cxt, void *blob);
+void *ft_find_device(struct ft_cxt *cxt, const char *srch_path);
+void *ft_find_descendent(struct ft_cxt *cxt, void *top, const char *srch_path);
+int ft_get_prop(struct ft_cxt *cxt, const void *phandle, const char *propname,
+		void *buf, const unsigned int buflen);
+int ft_set_prop(struct ft_cxt *cxt, const void *phandle, const char *propname,
+		const void *buf, const unsigned int buflen);
+
 #endif /* FLATDEVTREE_H */
diff --git a/arch/powerpc/boot/flatdevtree_env.h b/arch/powerpc/boot/flatdevtree_env.h
new file mode 100644
index 000000000000..83bc1c718836
--- /dev/null
+++ b/arch/powerpc/boot/flatdevtree_env.h
@@ -0,0 +1,47 @@
+/*
+ * This file adds the header file glue so that the shared files
+ * flatdevicetree.[ch] can compile and work in the powerpc bootwrapper.
+ *
+ * strncmp & strchr copied from <file:lib/strings.c>
+ * Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ * Maintained by: Mark A. Greer <mgreer@mvista.com>
+ */
+#ifndef _PPC_BOOT_FLATDEVTREE_ENV_H_
+#define _PPC_BOOT_FLATDEVTREE_ENV_H_
+
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "string.h"
+#include "stdio.h"
+#include "ops.h"
+
+#define be16_to_cpu(x)		(x)
+#define cpu_to_be16(x)		(x)
+#define be32_to_cpu(x)		(x)
+#define cpu_to_be32(x)		(x)
+#define be64_to_cpu(x)		(x)
+#define cpu_to_be64(x)		(x)
+
+static inline int strncmp(const char *cs, const char *ct, size_t count)
+{
+	signed char __res = 0;
+
+	while (count) {
+		if ((__res = *cs - *ct++) != 0 || !*cs++)
+			break;
+		count--;
+	}
+	return __res;
+}
+
+static inline char *strchr(const char *s, int c)
+{
+	for (; *s != (char)c; ++s)
+		if (*s == '\0')
+			return NULL;
+	return (char *)s;
+}
+
+#endif /* _PPC_BOOT_FLATDEVTREE_ENV_H_ */
diff --git a/arch/powerpc/boot/flatdevtree_misc.c b/arch/powerpc/boot/flatdevtree_misc.c
new file mode 100644
index 000000000000..04da38fa477f
--- /dev/null
+++ b/arch/powerpc/boot/flatdevtree_misc.c
@@ -0,0 +1,51 @@
+/*
+ * This file does the necessary interface mapping between the bootwrapper
+ * device tree operations and the interface provided by shared source
+ * files flatdevicetree.[ch].
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * 2006 (c) MontaVista Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <stddef.h>
+#include "flatdevtree.h"
+#include "ops.h"
+
+static struct ft_cxt cxt;
+
+static void *ft_finddevice(const char *name)
+{
+	return ft_find_device(&cxt, name);
+}
+
+static int ft_getprop(const void *phandle, const char *propname, void *buf,
+		const int buflen)
+{
+	return ft_get_prop(&cxt, phandle, propname, buf, buflen);
+}
+
+static int ft_setprop(const void *phandle, const char *propname,
+		const void *buf, const int buflen)
+{
+	return ft_set_prop(&cxt, phandle, propname, buf, buflen);
+}
+
+static unsigned long ft_finalize(void)
+{
+	ft_end_tree(&cxt);
+	return (unsigned long)cxt.bph;
+}
+
+int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device)
+{
+	dt_ops.finddevice = ft_finddevice;
+	dt_ops.getprop = ft_getprop;
+	dt_ops.setprop = ft_setprop;
+	dt_ops.finalize = ft_finalize;
+
+	return ft_open(&cxt, dt_blob, max_size, max_find_device,
+			platform_ops.realloc);
+}
diff --git a/arch/powerpc/boot/io.h b/arch/powerpc/boot/io.h
new file mode 100644
index 000000000000..32974ed49e02
--- /dev/null
+++ b/arch/powerpc/boot/io.h
@@ -0,0 +1,53 @@
+#ifndef _IO_H
+#define __IO_H
+/*
+ * Low-level I/O routines.
+ *
+ * Copied from <file:include/asm-powerpc/io.h> (which has no copyright)
+ */
+static inline int in_8(const volatile unsigned char *addr)
+{
+	int ret;
+
+	__asm__ __volatile__("lbz%U1%X1 %0,%1; twi 0,%0,0; isync"
+			     : "=r" (ret) : "m" (*addr));
+	return ret;
+}
+
+static inline void out_8(volatile unsigned char *addr, int val)
+{
+	__asm__ __volatile__("stb%U0%X0 %1,%0; sync"
+			     : "=m" (*addr) : "r" (val));
+}
+
+static inline unsigned in_le32(const volatile unsigned *addr)
+{
+	unsigned ret;
+
+	__asm__ __volatile__("lwbrx %0,0,%1; twi 0,%0,0; isync"
+			     : "=r" (ret) : "r" (addr), "m" (*addr));
+	return ret;
+}
+
+static inline unsigned in_be32(const volatile unsigned *addr)
+{
+	unsigned ret;
+
+	__asm__ __volatile__("lwz%U1%X1 %0,%1; twi 0,%0,0; isync"
+			     : "=r" (ret) : "m" (*addr));
+	return ret;
+}
+
+static inline void out_le32(volatile unsigned *addr, int val)
+{
+	__asm__ __volatile__("stwbrx %1,0,%2; sync" : "=m" (*addr)
+			     : "r" (val), "r" (addr));
+}
+
+static inline void out_be32(volatile unsigned *addr, int val)
+{
+	__asm__ __volatile__("stw%U0%X0 %1,%0; sync"
+			     : "=m" (*addr) : "r" (val));
+}
+
+#endif /* _IO_H */
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index d719bb9333d1..6f6b50d238b6 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -27,6 +27,8 @@ extern char _vmlinux_start[];
 extern char _vmlinux_end[];
 extern char _initrd_start[];
 extern char _initrd_end[];
+extern char _dtb_start[];
+extern char _dtb_end[];
 
 struct addr_range {
 	unsigned long addr;
@@ -167,7 +169,7 @@ static int is_elf32(void *hdr)
 	return 1;
 }
 
-static void prep_kernel(unsigned long *a1, unsigned long *a2)
+static void prep_kernel(unsigned long a1, unsigned long a2)
 {
 	int len;
 
@@ -203,11 +205,14 @@ static void prep_kernel(unsigned long *a1, unsigned long *a2)
 	}
 
 	/*
-	 * Now we try to alloc memory for the initrd (and copy it there)
+	 * Now find the initrd
+	 *
+	 * First see if we have an image attached to us.  If so
+	 * allocate memory for it and copy it there.
 	 */
 	initrd.size = (unsigned long)(_initrd_end - _initrd_start);
 	initrd.memsize = initrd.size;
-	if ( initrd.size > 0 ) {
+	if (initrd.size > 0) {
 		printf("Allocating 0x%lx bytes for initrd ...\n\r",
 		       initrd.size);
 		initrd.addr = (unsigned long)malloc((u32)initrd.size);
@@ -216,8 +221,6 @@ static void prep_kernel(unsigned long *a1, unsigned long *a2)
 					"ramdisk !\n\r");
 			exit();
 		}
-		*a1 = initrd.addr;
-		*a2 = initrd.size;
 		printf("initial ramdisk moving 0x%lx <- 0x%lx "
 			"(0x%lx bytes)\n\r", initrd.addr,
 			(unsigned long)_initrd_start, initrd.size);
@@ -225,6 +228,12 @@ static void prep_kernel(unsigned long *a1, unsigned long *a2)
 			initrd.size);
 		printf("initrd head: 0x%lx\n\r",
 				*((unsigned long *)initrd.addr));
+	} else if (a2 != 0) {
+		/* Otherwise, see if yaboot or another loader gave us an initrd */
+		initrd.addr = a1;
+		initrd.memsize = initrd.size = a2;
+		printf("Using loader supplied initrd at 0x%lx (0x%lx bytes)\n\r",
+		       initrd.addr, initrd.size);
 	}
 
 	/* Eventually gunzip the kernel */
@@ -250,10 +259,6 @@ static void prep_kernel(unsigned long *a1, unsigned long *a2)
 	flush_cache((void *)vmlinux.addr, vmlinux.size);
 }
 
-void __attribute__ ((weak)) ft_init(void *dt_blob)
-{
-}
-
 /* A buffer that may be edited by tools operating on a zImage binary so as to
  * edit the command line passed to vmlinux (by setting /chosen/bootargs).
  * The buffer is put in it's own section so that tools may locate it easier.
@@ -285,36 +290,22 @@ static void set_cmdline(char *buf)
 		setprop(devp, "bootargs", buf, strlen(buf) + 1);
 }
 
-/* Section where ft can be tacked on after zImage is built */
-union blobspace {
-	struct boot_param_header hdr;
-	char space[8*1024];
-} dt_blob __attribute__((__section__("__builtin_ft")));
-
 struct platform_ops platform_ops;
 struct dt_ops dt_ops;
 struct console_ops console_ops;
 
 void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 {
-	int have_dt = 0;
 	kernel_entry_t kentry;
 	char cmdline[COMMAND_LINE_SIZE];
+	unsigned long ft_addr = 0;
 
 	memset(__bss_start, 0, _end - __bss_start);
 	memset(&platform_ops, 0, sizeof(platform_ops));
 	memset(&dt_ops, 0, sizeof(dt_ops));
 	memset(&console_ops, 0, sizeof(console_ops));
 
-	/* Override the dt_ops and device tree if there was an flat dev
-	 * tree attached to the zImage.
-	 */
-	if (dt_blob.hdr.magic == OF_DT_HEADER) {
-		have_dt = 1;
-		ft_init(&dt_blob);
-	}
-
-	if (platform_init(promptr))
+	if (platform_init(promptr, _dtb_start, _dtb_end))
 		exit();
 	if (console_ops.open && (console_ops.open() < 0))
 		exit();
@@ -324,7 +315,7 @@ void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 	printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r",
 	       _start, sp);
 
-	prep_kernel(&a1, &a2);
+	prep_kernel(a1, a2);
 
 	/* If cmdline came from zimage wrapper or if we can edit the one
 	 * in the dt, print it out and edit it, if possible.
@@ -338,15 +329,23 @@ void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 		set_cmdline(cmdline);
 	}
 
+	printf("Finalizing device tree...");
+	if (dt_ops.finalize)
+		ft_addr = dt_ops.finalize();
+	if (ft_addr)
+		printf(" flat tree at 0x%lx\n\r", ft_addr);
+	else
+		printf(" using OF tree (promptr=%p)\n\r", promptr);
+
 	if (console_ops.close)
 		console_ops.close();
 
 	kentry = (kernel_entry_t) vmlinux.addr;
-	if (have_dt)
-		kentry(dt_ops.ft_addr(), 0, NULL);
+	if (ft_addr)
+		kentry(ft_addr, 0, NULL);
 	else
 		/* XXX initrd addr/size should be passed in properties */
-		kentry(a1, a2, promptr);
+		kentry(initrd.addr, initrd.size, promptr);
 
 	/* console closed so printf below may not work */
 	printf("Error: Linux kernel returned to zImage boot wrapper!\n\r");
diff --git a/arch/powerpc/boot/mktree.c b/arch/powerpc/boot/mktree.c
new file mode 100644
index 000000000000..4cb892993651
--- /dev/null
+++ b/arch/powerpc/boot/mktree.c
@@ -0,0 +1,152 @@
+/*
+ * Makes a tree bootable image for IBM Evaluation boards.
+ * Basically, just take a zImage, skip the ELF header, and stuff
+ * a 32 byte header on the front.
+ *
+ * We use htonl, which is a network macro, to make sure we're doing
+ * The Right Thing on an LE machine.  It's non-obvious, but it should
+ * work on anything BSD'ish.
+ */
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#ifdef __sun__
+#include <inttypes.h>
+#else
+#include <stdint.h>
+#endif
+
+/* This gets tacked on the front of the image.  There are also a few
+ * bytes allocated after the _start label used by the boot rom (see
+ * head.S for details).
+ */
+typedef struct boot_block {
+	uint32_t bb_magic;		/* 0x0052504F */
+	uint32_t bb_dest;		/* Target address of the image */
+	uint32_t bb_num_512blocks;	/* Size, rounded-up, in 512 byte blks */
+	uint32_t bb_debug_flag;	/* Run debugger or image after load */
+	uint32_t bb_entry_point;	/* The image address to start */
+	uint32_t bb_checksum;	/* 32 bit checksum including header */
+	uint32_t reserved[2];
+} boot_block_t;
+
+#define IMGBLK	512
+char	tmpbuf[IMGBLK];
+
+int main(int argc, char *argv[])
+{
+	int	in_fd, out_fd;
+	int	nblks, i;
+	uint	cksum, *cp;
+	struct	stat	st;
+	boot_block_t	bt;
+
+	if (argc < 3) {
+		fprintf(stderr, "usage: %s <zImage-file> <boot-image> [entry-point]\n",argv[0]);
+		exit(1);
+	}
+
+	if (stat(argv[1], &st) < 0) {
+		perror("stat");
+		exit(2);
+	}
+
+	nblks = (st.st_size + IMGBLK) / IMGBLK;
+
+	bt.bb_magic = htonl(0x0052504F);
+
+	/* If we have the optional entry point parameter, use it */
+	if (argc == 4)
+		bt.bb_dest = bt.bb_entry_point = htonl(strtoul(argv[3], NULL, 0));
+	else
+		bt.bb_dest = bt.bb_entry_point = htonl(0x500000);
+
+	/* We know these from the linker command.
+	 * ...and then move it up into memory a little more so the
+	 * relocation can happen.
+	 */
+	bt.bb_num_512blocks = htonl(nblks);
+	bt.bb_debug_flag = 0;
+
+	bt.bb_checksum = 0;
+
+	/* To be neat and tidy :-).
+	*/
+	bt.reserved[0] = 0;
+	bt.reserved[1] = 0;
+
+	if ((in_fd = open(argv[1], O_RDONLY)) < 0) {
+		perror("zImage open");
+		exit(3);
+	}
+
+	if ((out_fd = open(argv[2], (O_RDWR | O_CREAT | O_TRUNC), 0666)) < 0) {
+		perror("bootfile open");
+		exit(3);
+	}
+
+	cksum = 0;
+	cp = (void *)&bt;
+	for (i=0; i<sizeof(bt)/sizeof(uint); i++)
+		cksum += *cp++;
+
+	/* Assume zImage is an ELF file, and skip the 64K header.
+	*/
+	if (read(in_fd, tmpbuf, IMGBLK) != IMGBLK) {
+		fprintf(stderr, "%s is too small to be an ELF image\n",
+				argv[1]);
+		exit(4);
+	}
+
+	if ((*(uint *)tmpbuf) != htonl(0x7f454c46)) {
+		fprintf(stderr, "%s is not an ELF image\n", argv[1]);
+		exit(4);
+	}
+
+	if (lseek(in_fd, (64 * 1024), SEEK_SET) < 0) {
+		fprintf(stderr, "%s failed to seek in ELF image\n", argv[1]);
+		exit(4);
+	}
+
+	nblks -= (64 * 1024) / IMGBLK;
+
+	/* And away we go......
+	*/
+	if (write(out_fd, &bt, sizeof(bt)) != sizeof(bt)) {
+		perror("boot-image write");
+		exit(5);
+	}
+
+	while (nblks-- > 0) {
+		if (read(in_fd, tmpbuf, IMGBLK) < 0) {
+			perror("zImage read");
+			exit(5);
+		}
+		cp = (uint *)tmpbuf;
+		for (i=0; i<sizeof(tmpbuf)/sizeof(uint); i++)
+			cksum += *cp++;
+		if (write(out_fd, tmpbuf, sizeof(tmpbuf)) != sizeof(tmpbuf)) {
+			perror("boot-image write");
+			exit(5);
+		}
+	}
+
+	/* rewrite the header with the computed checksum.
+	*/
+	bt.bb_checksum = htonl(cksum);
+	if (lseek(out_fd, 0, SEEK_SET) < 0) {
+		perror("rewrite seek");
+		exit(1);
+	}
+	if (write(out_fd, &bt, sizeof(bt)) != sizeof(bt)) {
+		perror("boot-image rewrite");
+		exit(1);
+	}
+
+	exit(0);
+}
diff --git a/arch/powerpc/boot/ns16550.c b/arch/powerpc/boot/ns16550.c
new file mode 100644
index 000000000000..1ffe72e35cdc
--- /dev/null
+++ b/arch/powerpc/boot/ns16550.c
@@ -0,0 +1,74 @@
+/*
+ * 16550 serial console support.
+ *
+ * Original copied from <file:arch/ppc/boot/common/ns16550.c>
+ * (which had no copyright)
+ * Modifications: 2006 (c) MontaVista Software, Inc.
+ *
+ * Modified by: Mark A. Greer <mgreer@mvista.com>
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "string.h"
+#include "stdio.h"
+#include "io.h"
+#include "ops.h"
+
+#define UART_DLL	0	/* Out: Divisor Latch Low */
+#define UART_DLM	1	/* Out: Divisor Latch High */
+#define UART_FCR	2	/* Out: FIFO Control Register */
+#define UART_LCR	3	/* Out: Line Control Register */
+#define UART_MCR	4	/* Out: Modem Control Register */
+#define UART_LSR	5	/* In:  Line Status Register */
+#define UART_LSR_THRE	0x20	/* Transmit-hold-register empty */
+#define UART_LSR_DR	0x01	/* Receiver data ready */
+#define UART_MSR	6	/* In:  Modem Status Register */
+#define UART_SCR	7	/* I/O: Scratch Register */
+
+static unsigned char *reg_base;
+static u32 reg_shift;
+
+static int ns16550_open(void)
+{
+	out_8(reg_base + (UART_FCR << reg_shift), 0x06);
+	return 0;
+}
+
+static void ns16550_putc(unsigned char c)
+{
+	while ((in_8(reg_base + (UART_LSR << reg_shift)) & UART_LSR_THRE) == 0);
+	out_8(reg_base, c);
+}
+
+static unsigned char ns16550_getc(void)
+{
+	while ((in_8(reg_base + (UART_LSR << reg_shift)) & UART_LSR_DR) == 0);
+	return in_8(reg_base);
+}
+
+static u8 ns16550_tstc(void)
+{
+	return ((in_8(reg_base + (UART_LSR << reg_shift)) & UART_LSR_DR) != 0);
+}
+
+int ns16550_console_init(void *devp, struct serial_console_data *scdp)
+{
+	int n;
+
+	n = getprop(devp, "virtual-reg", &reg_base, sizeof(reg_base));
+	if (n != sizeof(reg_base))
+		return -1;
+
+	n = getprop(devp, "reg-shift", &reg_shift, sizeof(reg_shift));
+	if (n != sizeof(reg_shift))
+		reg_shift = 0;
+
+	scdp->open = ns16550_open;
+	scdp->putc = ns16550_putc;
+	scdp->getc = ns16550_getc;
+	scdp->tstc = ns16550_tstc;
+	scdp->close = NULL;
+
+	return 0;
+}
diff --git a/arch/powerpc/boot/of.c b/arch/powerpc/boot/of.c
index 3a71845afc6c..0182f384f3e6 100644
--- a/arch/powerpc/boot/of.c
+++ b/arch/powerpc/boot/of.c
@@ -256,24 +256,18 @@ static void of_console_write(char *buf, int len)
 	call_prom("write", 3, 1, of_stdout_handle, buf, len);
 }
 
-int platform_init(void *promptr)
+int platform_init(void *promptr, char *dt_blob_start, char *dt_blob_end)
 {
-	platform_ops.fixups = NULL;
 	platform_ops.image_hdr = of_image_hdr;
 	platform_ops.malloc = of_try_claim;
-	platform_ops.free = NULL;
 	platform_ops.exit = of_exit;
 
 	dt_ops.finddevice = of_finddevice;
 	dt_ops.getprop = of_getprop;
 	dt_ops.setprop = of_setprop;
-	dt_ops.translate_addr = NULL;
 
 	console_ops.open = of_console_open;
 	console_ops.write = of_console_write;
-	console_ops.edit_cmdline = NULL;
-	console_ops.close = NULL;
-	console_ops.data = NULL;
 
 	prom = (int (*)(void *))promptr;
 	return 0;
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 135eb4bb03b4..8abb6516bb7c 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -22,7 +22,8 @@ struct platform_ops {
 	void	(*fixups)(void);
 	void	(*image_hdr)(const void *);
 	void *	(*malloc)(u32 size);
-	void	(*free)(void *ptr, u32 size);
+	void	(*free)(void *ptr);
+	void *	(*realloc)(void *ptr, unsigned long size);
 	void	(*exit)(void);
 };
 extern struct platform_ops platform_ops;
@@ -30,13 +31,11 @@ extern struct platform_ops platform_ops;
 /* Device Tree operations */
 struct dt_ops {
 	void *	(*finddevice)(const char *name);
-	int	(*getprop)(const void *node, const char *name, void *buf,
+	int	(*getprop)(const void *phandle, const char *name, void *buf,
 			const int buflen);
-	int	(*setprop)(const void *node, const char *name,
+	int	(*setprop)(const void *phandle, const char *name,
 			const void *buf, const int buflen);
-	u64	(*translate_addr)(const char *path, const u32 *in_addr,
-			const u32 addr_len);
-	unsigned long (*ft_addr)(void);
+	unsigned long (*finalize)(void);
 };
 extern struct dt_ops dt_ops;
 
@@ -59,10 +58,13 @@ struct serial_console_data {
 	void		(*close)(void);
 };
 
-extern int platform_init(void *promptr);
-extern void simple_alloc_init(void);
-extern void ft_init(void *dt_blob);
-extern int serial_console_init(void);
+int platform_init(void *promptr, char *dt_blob_start, char *dt_blob_end);
+int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device);
+int serial_console_init(void);
+int ns16550_console_init(void *devp, struct serial_console_data *scdp);
+void *simple_alloc_init(char *base, u32 heap_size, u32 granularity,
+		u32 max_allocs);
+
 
 static inline void *finddevice(const char *name)
 {
@@ -84,10 +86,10 @@ static inline void *malloc(u32 size)
 	return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
 }
 
-static inline void free(void *ptr, u32 size)
+static inline void free(void *ptr)
 {
 	if (platform_ops.free)
-		platform_ops.free(ptr, size);
+		platform_ops.free(ptr);
 }
 
 static inline void exit(void)
diff --git a/arch/powerpc/boot/serial.c b/arch/powerpc/boot/serial.c
new file mode 100644
index 000000000000..e8de4cf59be7
--- /dev/null
+++ b/arch/powerpc/boot/serial.c
@@ -0,0 +1,142 @@
+/*
+ * Generic serial console support
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * Code in serial_edit_cmdline() copied from <file:arch/ppc/boot/simple/misc.c>
+ * and was written by Matt Porter <mporter@kernel.crashing.org>.
+ *
+ * 2001,2006 (c) MontaVista Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "string.h"
+#include "stdio.h"
+#include "io.h"
+#include "ops.h"
+
+extern void udelay(long delay);
+
+static int serial_open(void)
+{
+	struct serial_console_data *scdp = console_ops.data;
+	return scdp->open();
+}
+
+static void serial_write(char *buf, int len)
+{
+	struct serial_console_data *scdp = console_ops.data;
+
+	while (*buf != '\0')
+		scdp->putc(*buf++);
+}
+
+static void serial_edit_cmdline(char *buf, int len)
+{
+	int timer = 0, count;
+	char ch, *cp;
+	struct serial_console_data *scdp = console_ops.data;
+
+	cp = buf;
+	count = strlen(buf);
+	cp = &buf[count];
+	count++;
+
+	while (timer++ < 5*1000) {
+		if (scdp->tstc()) {
+			while (((ch = scdp->getc()) != '\n') && (ch != '\r')) {
+				/* Test for backspace/delete */
+				if ((ch == '\b') || (ch == '\177')) {
+					if (cp != buf) {
+						cp--;
+						count--;
+						printf("\b \b");
+					}
+				/* Test for ^x/^u (and wipe the line) */
+				} else if ((ch == '\030') || (ch == '\025')) {
+					while (cp != buf) {
+						cp--;
+						count--;
+						printf("\b \b");
+					}
+				} else if (count < len) {
+						*cp++ = ch;
+						count++;
+						scdp->putc(ch);
+				}
+			}
+			break;  /* Exit 'timer' loop */
+		}
+		udelay(1000);  /* 1 msec */
+	}
+	*cp = 0;
+}
+
+static void serial_close(void)
+{
+	struct serial_console_data *scdp = console_ops.data;
+
+	if (scdp->close)
+		scdp->close();
+}
+
+static void *serial_get_stdout_devp(void)
+{
+	void *devp;
+	char devtype[MAX_PROP_LEN];
+	char path[MAX_PATH_LEN];
+
+	devp = finddevice("/chosen");
+	if (devp == NULL)
+		goto err_out;
+
+	if (getprop(devp, "linux,stdout-path", path, MAX_PATH_LEN) > 0) {
+		devp = finddevice(path);
+		if (devp == NULL)
+			goto err_out;
+
+		if ((getprop(devp, "device_type", devtype, sizeof(devtype)) > 0)
+				&& !strcmp(devtype, "serial"))
+			return devp;
+	}
+err_out:
+	return NULL;
+}
+
+static struct serial_console_data serial_cd;
+
+/* Node's "compatible" property determines which serial driver to use */
+int serial_console_init(void)
+{
+	void *devp;
+	int rc = -1;
+	char compat[MAX_PROP_LEN];
+
+	devp = serial_get_stdout_devp();
+	if (devp == NULL)
+		goto err_out;
+
+	if (getprop(devp, "compatible", compat, sizeof(compat)) < 0)
+		goto err_out;
+
+	if (!strcmp(compat, "ns16550"))
+		rc = ns16550_console_init(devp, &serial_cd);
+
+	/* Add other serial console driver calls here */
+
+	if (!rc) {
+		console_ops.open = serial_open;
+		console_ops.write = serial_write;
+		console_ops.edit_cmdline = serial_edit_cmdline;
+		console_ops.close = serial_close;
+		console_ops.data = &serial_cd;
+
+		return 0;
+	}
+err_out:
+	return -1;
+}
diff --git a/arch/powerpc/boot/simple_alloc.c b/arch/powerpc/boot/simple_alloc.c
new file mode 100644
index 000000000000..cfe3a7505ba0
--- /dev/null
+++ b/arch/powerpc/boot/simple_alloc.c
@@ -0,0 +1,149 @@
+/*
+ * Implement primitive realloc(3) functionality.
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * 2006 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <stddef.h>
+#include "types.h"
+#include "page.h"
+#include "string.h"
+#include "ops.h"
+
+#define	ENTRY_BEEN_USED	0x01
+#define	ENTRY_IN_USE	0x02
+
+static struct alloc_info {
+	u32	flags;
+	u32	base;
+	u32	size;
+} *alloc_tbl;
+
+static u32 tbl_entries;
+static u32 alloc_min;
+static u32 next_base;
+static u32 space_left;
+
+/*
+ * First time an entry is used, its base and size are set.
+ * An entry can be freed and re-malloc'd but its base & size don't change.
+ * Should be smart enough for needs of bootwrapper.
+ */
+static void *simple_malloc(u32 size)
+{
+	u32 i;
+	struct alloc_info *p = alloc_tbl;
+
+	if (size == 0)
+		goto err_out;
+
+	size = _ALIGN_UP(size, alloc_min);
+
+	for (i=0; i<tbl_entries; i++, p++)
+		if (!(p->flags & ENTRY_BEEN_USED)) { /* never been used */
+			if (size <= space_left) {
+				p->base = next_base;
+				p->size = size;
+				p->flags = ENTRY_BEEN_USED | ENTRY_IN_USE;
+				next_base += size;
+				space_left -= size;
+				return (void *)p->base;
+			}
+			goto err_out; /* not enough space left */
+		}
+		/* reuse an entry keeping same base & size */
+		else if (!(p->flags & ENTRY_IN_USE) && (size <= p->size)) {
+			p->flags |= ENTRY_IN_USE;
+			return (void *)p->base;
+		}
+err_out:
+	return NULL;
+}
+
+static struct alloc_info *simple_find_entry(void *ptr)
+{
+	u32 i;
+	struct alloc_info *p = alloc_tbl;
+
+	for (i=0; i<tbl_entries; i++,p++) {
+		if (!(p->flags & ENTRY_BEEN_USED))
+			break;
+		if ((p->flags & ENTRY_IN_USE) && (p->base == (u32)ptr))
+			return p;
+	}
+	return NULL;
+}
+
+static void simple_free(void *ptr)
+{
+	struct alloc_info *p = simple_find_entry(ptr);
+
+	if (p != NULL)
+		p->flags &= ~ENTRY_IN_USE;
+}
+
+/*
+ * Change size of area pointed to by 'ptr' to 'size'.
+ * If 'ptr' is NULL, then its a malloc().  If 'size' is 0, then its a free().
+ * 'ptr' must be NULL or a pointer to a non-freed area previously returned by
+ * simple_realloc() or simple_malloc().
+ */
+static void *simple_realloc(void *ptr, unsigned long size)
+{
+	struct alloc_info *p;
+	void *new;
+
+	if (size == 0) {
+		simple_free(ptr);
+		return NULL;
+	}
+
+	if (ptr == NULL)
+		return simple_malloc(size);
+
+	p = simple_find_entry(ptr);
+	if (p == NULL) /* ptr not from simple_malloc/simple_realloc */
+		return NULL;
+	if (size <= p->size) /* fits in current block */
+		return ptr;
+
+	new = simple_malloc(size);
+	memcpy(new, ptr, p->size);
+	simple_free(ptr);
+	return new;
+}
+
+/*
+ * Returns addr of first byte after heap so caller can see if it took
+ * too much space.  If so, change args & try again.
+ */
+void *simple_alloc_init(char *base, u32 heap_size, u32 granularity,
+		u32 max_allocs)
+{
+	u32 heap_base, tbl_size;
+
+	heap_size = _ALIGN_UP(heap_size, granularity);
+	alloc_min = granularity;
+	tbl_entries = max_allocs;
+
+	tbl_size = tbl_entries * sizeof(struct alloc_info);
+
+	alloc_tbl = (struct alloc_info *)_ALIGN_UP((unsigned long)base, 8);
+	memset(alloc_tbl, 0, tbl_size);
+
+	heap_base = _ALIGN_UP((u32)alloc_tbl + tbl_size, alloc_min);
+
+	next_base = heap_base;
+	space_left = heap_size;
+
+	platform_ops.malloc = simple_malloc;
+	platform_ops.free = simple_free;
+	platform_ops.realloc = simple_realloc;
+
+	return (void *)(heap_base + heap_size);
+}
diff --git a/arch/powerpc/boot/stdio.c b/arch/powerpc/boot/stdio.c
index 6d5f6382e1ce..0a9feeb98342 100644
--- a/arch/powerpc/boot/stdio.c
+++ b/arch/powerpc/boot/stdio.c
@@ -320,6 +320,7 @@ printf(const char *fmt, ...)
 	va_start(args, fmt);
 	n = vsprintf(sprint_buf, fmt, args);
 	va_end(args);
-	console_ops.write(sprint_buf, n);
+	if (console_ops.write)
+		console_ops.write(sprint_buf, n);
 	return n;
 }
diff --git a/arch/powerpc/boot/util.S b/arch/powerpc/boot/util.S
new file mode 100644
index 000000000000..427ddfc11991
--- /dev/null
+++ b/arch/powerpc/boot/util.S
@@ -0,0 +1,88 @@
+/*
+ * Copied from <file:arch/powerpc/kernel/misc_32.S>
+ *
+ * This file contains miscellaneous low-level functions.
+ *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras.
+ *
+ * kexec bits:
+ * Copyright (C) 2002-2003 Eric Biederman  <ebiederm@xmission.com>
+ * GameCube/ppc32 port Copyright (C) 2004 Albert Herranz
+ *
+ * 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; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+#include "ppc_asm.h"
+
+#define SPRN_PVR        0x11F   /* Processor Version Register */
+
+	.text
+
+/* udelay (on non-601 processors) needs to know the period of the
+ * timebase in nanoseconds.  This used to be hardcoded to be 60ns
+ * (period of 66MHz/4).  Now a variable is used that is initialized to
+ * 60 for backward compatibility, but it can be overridden as necessary
+ * with code something like this:
+ *    extern unsigned long timebase_period_ns;
+ *    timebase_period_ns = 1000000000 / bd->bi_tbfreq;
+ */
+	.data
+	.globl timebase_period_ns
+timebase_period_ns:
+	.long	60
+
+	.text
+/*
+ * Delay for a number of microseconds
+ */
+	.globl	udelay
+udelay:
+	mfspr	r4,SPRN_PVR
+	srwi	r4,r4,16
+	cmpwi	0,r4,1		/* 601 ? */
+	bne	.udelay_not_601
+00:	li	r0,86	/* Instructions / microsecond? */
+	mtctr	r0
+10:	addi	r0,r0,0 /* NOP */
+	bdnz	10b
+	subic.	r3,r3,1
+	bne	00b
+	blr
+
+.udelay_not_601:
+	mulli	r4,r3,1000	/* nanoseconds */
+	/*  Change r4 to be the number of ticks using:
+	 *	(nanoseconds + (timebase_period_ns - 1 )) / timebase_period_ns
+	 *  timebase_period_ns defaults to 60 (16.6MHz) */
+	mflr	r5
+	bl	0f
+0:	mflr	r6
+	mtlr	r5
+	lis	r5,0b@ha
+	addi	r5,r5,0b@l
+	subf	r5,r5,r6	/* In case we're relocated */
+	addis	r5,r5,timebase_period_ns@ha
+	lwz	r5,timebase_period_ns@l(r5)
+	add	r4,r4,r5
+	addi	r4,r4,-1
+	divw	r4,r4,r5	/* BUS ticks */
+1:	mftbu	r5
+	mftb	r6
+	mftbu	r7
+	cmpw	0,r5,r7
+	bne	1b		/* Get [synced] base time */
+	addc	r9,r6,r4	/* Compute end time */
+	addze	r8,r5
+2:	mftbu	r5
+	cmpw	0,r5,r8
+	blt	2b
+	bgt	3f
+	mftb	r6
+	cmpw	0,r6,r9
+	blt	2b
+3:	blr
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index b5fb1fee76f8..024e4d425c59 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -184,6 +184,9 @@ fi
 
 if [ -n "$dtb" ]; then
     addsec $tmp "$dtb" .kernel:dtb
+    if [ -n "$dts" ]; then
+	rm $dtb
+    fi
 fi
 
 if [ "$platform" != "miboot" ]; then
diff --git a/arch/powerpc/boot/zImage.coff.lds.S b/arch/powerpc/boot/zImage.coff.lds.S
index 05f32388b953..a360905e5428 100644
--- a/arch/powerpc/boot/zImage.coff.lds.S
+++ b/arch/powerpc/boot/zImage.coff.lds.S
@@ -21,6 +21,10 @@ SECTIONS
     *(.got2)
     __got2_end = .;
 
+    _dtb_start = .;
+    *(.kernel:dtb)
+    _dtb_end = .;
+
     _vmlinux_start =  .;
     *(.kernel:vmlinux.strip)
     _vmlinux_end =  .;