Merge commit 'jwb/jwb-next'

Documentation/powerpc/bootwrapper.txt

@@ -0,0 +1,141 @@
+The PowerPC boot wrapper
+------------------------
+Copyright (C) Secret Lab Technologies Ltd.
+
+PowerPC image targets compresses and wraps the kernel image (vmlinux) with
+a boot wrapper to make it usable by the system firmware.  There is no
+standard PowerPC firmware interface, so the boot wrapper is designed to
+be adaptable for each kind of image that needs to be built.
+
+The boot wrapper can be found in the arch/powerpc/boot/ directory.  The
+Makefile in that directory has targets for all the available image types.
+The different image types are used to support all of the various firmware
+interfaces found on PowerPC platforms.  OpenFirmware is the most commonly
+used firmware type on general purpose PowerPC systems from Apple, IBM and
+others.  U-Boot is typically found on embedded PowerPC hardware, but there
+are a handful of other firmware implementations which are also popular.  Each
+firmware interface requires a different image format.
+
+The boot wrapper is built from the makefile in arch/powerpc/boot/Makefile and
+it uses the wrapper script (arch/powerpc/boot/wrapper) to generate target
+image.  The details of the build system is discussed in the next section.
+Currently, the following image format targets exist:
+
+   cuImage.%:		Backwards compatible uImage for older version of
+			U-Boot (for versions that don't understand the device
+			tree).  This image embeds a device tree blob inside
+			the image.  The boot wrapper, kernel and device tree
+			are all embedded inside the U-Boot uImage file format
+			with boot wrapper code that extracts data from the old
+			bd_info structure and loads the data into the device
+			tree before jumping into the kernel.
+			  Because of the series of #ifdefs found in the
+			bd_info structure used in the old U-Boot interfaces,
+			cuImages are platform specific.  Each specific
+			U-Boot platform has a different platform init file
+			which populates the embedded device tree with data
+			from the platform specific bd_info file.  The platform
+			specific cuImage platform init code can be found in
+			arch/powerpc/boot/cuboot.*.c.  Selection of the correct
+			cuImage init code for a specific board can be found in
+			the wrapper structure.
+   dtbImage.%:		Similar to zImage, except device tree blob is embedded
+			inside the image instead of provided by firmware.  The
+			output image file can be either an elf file or a flat
+			binary depending on the platform.
+			  dtbImages are used on systems which do not have an
+			interface for passing a device tree directly.
+			dtbImages are similar to simpleImages except that
+			dtbImages have platform specific code for extracting
+			data from the board firmware, but simpleImages do not
+			talk to the firmware at all.
+			  PlayStation 3 support uses dtbImage.  So do Embedded
+			Planet boards using the PlanetCore firmware.  Board
+			specific initialization code is typically found in a
+			file named arch/powerpc/boot/<platform>.c; but this
+			can be overridden by the wrapper script.
+   simpleImage.%:	Firmware independent compressed image that does not
+			depend on any particular firmware interface and embeds
+			a device tree blob.  This image is a flat binary that
+			can be loaded to any location in RAM and jumped to.
+			Firmware cannot pass any configuration data to the
+			kernel with this image type and it depends entirely on
+			the embedded device tree for all information.
+			  The simpleImage is useful for booting systems with
+			an unknown firmware interface or for booting from
+			a debugger when no firmware is present (such as on
+			the Xilinx Virtex platform).  The only assumption that
+			simpleImage makes is that RAM is correctly initialized
+			and that the MMU is either off or has RAM mapped to
+			base address 0.
+			  simpleImage also supports inserting special platform
+			specific initialization code to the start of the bootup
+			sequence.  The virtex405 platform uses this feature to
+			ensure that the cache is invalidated before caching
+			is enabled.  Platform specific initialization code is
+			added as part of the wrapper script and is keyed on
+			the image target name.  For example, all
+			simpleImage.virtex405-* targets will add the
+			virtex405-head.S initialization code (This also means
+			that the dts file for virtex405 targets should be
+			named (virtex405-<board>.dts).  Search the wrapper
+			script for 'virtex405' and see the file
+			arch/powerpc/boot/virtex405-head.S for details.
+   treeImage.%;		Image format for used with OpenBIOS firmware found
+			on some ppc4xx hardware.  This image embeds a device
+			tree blob inside the image.
+   uImage:		Native image format used by U-Boot.  The uImage target
+			does not add any boot code.  It just wraps a compressed
+			vmlinux in the uImage data structure.  This image
+			requires a version of U-Boot that is able to pass
+			a device tree to the kernel at boot.  If using an older
+			version of U-Boot, then you need to use a cuImage
+			instead.
+   zImage.%:		Image format which does not embed a device tree.
+			Used by OpenFirmware and other firmware interfaces
+			which are able to supply a device tree.  This image
+			expects firmware to provide the device tree at boot.
+			Typically, if you have general purpose PowerPC
+			hardware then you want this image format.
+
+Image types which embed a device tree blob (simpleImage, dtbImage, treeImage,
+and cuImage) all generate the device tree blob from a file in the
+arch/powerpc/boot/dts/ directory.  The Makefile selects the correct device
+tree source based on the name of the target.  Therefore, if the kernel is
+built with 'make treeImage.walnut simpleImage.virtex405-ml403', then the
+build system will use arch/powerpc/boot/dts/walnut.dts to build
+treeImage.walnut and arch/powerpc/boot/dts/virtex405-ml403.dts to build
+the simpleImage.virtex405-ml403.
+
+Two special targets called 'zImage' and 'zImage.initrd' also exist.  These
+targets build all the default images as selected by the kernel configuration.
+Default images are selected by the boot wrapper Makefile
+(arch/powerpc/boot/Makefile) by adding targets to the $image-y variable.  Look
+at the Makefile to see which default image targets are available.
+
+How it is built
+---------------
+arch/powerpc is designed to support multiplatform kernels, which means
+that a single vmlinux image can be booted on many different target boards.
+It also means that the boot wrapper must be able to wrap for many kinds of
+images on a single build.  The design decision was made to not use any
+conditional compilation code (#ifdef, etc) in the boot wrapper source code.
+All of the boot wrapper pieces are buildable at any time regardless of the
+kernel configuration.  Building all the wrapper bits on every kernel build
+also ensures that obscure parts of the wrapper are at the very least compile
+tested in a large variety of environments.
+
+The wrapper is adapted for different image types at link time by linking in
+just the wrapper bits that are appropriate for the image type.  The 'wrapper
+script' (found in arch/powerpc/boot/wrapper) is called by the Makefile and
+is responsible for selecting the correct wrapper bits for the image type.
+The arguments are well documented in the script's comment block, so they
+are not repeated here.  However, it is worth mentioning that the script
+uses the -p (platform) argument as the main method of deciding which wrapper
+bits to compile in.  Look for the large 'case "$platform" in' block in the
+middle of the script.  This is also the place where platform specific fixups
+can be selected by changing the link order.
+
+In particular, care should be taken when working with cuImages.  cuImage
+wrapper bits are very board specific and care should be taken to make sure
+the target you are trying to build is supported by the wrapper bits.

arch/powerpc/Kconfig

@@ -459,6 +459,19 @@ config CMDLINE
 	  some command-line options at build time by entering them here.  In
 	  most cases you will need to specify the root device here.
 
+config EXTRA_TARGETS
+	string "Additional default image types"
+	help
+	  List additional targets to be built by the bootwrapper here (separated
+	  by spaces).  This is useful for targets that depend of device tree
+	  files in the .dts directory.
+
+	  Targets in this list will be build as part of the default build
+	  target, or when the user does a 'make zImage' or a
+	  'make zImage.initrd'.
+
+	  If unsure, leave blank
+
 if !44x || BROKEN
 config ARCH_WANTS_FREEZER_CONTROL
 	def_bool y

arch/powerpc/Makefile

@@ -163,12 +163,25 @@ bootwrapper_install %.dtb:
 	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
 
 define archhelp
-  @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
+  @echo '* zImage          - Build default images selected by kernel config'
+  @echo '  zImage.*        - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
+  @echo '  uImage          - U-Boot native image format'
+  @echo '  cuImage.<dt>    - Backwards compatible U-Boot image for older'
+  @echo '                    versions which do not support device trees'
+  @echo '  dtbImage.<dt>   - zImage with an embedded device tree blob'
+  @echo '  simpleImage.<dt> - Firmware independent image.'
+  @echo '  treeImage.<dt>  - Support for older IBM 4xx firmware (not U-Boot)'
   @echo '  install         - Install kernel using'
   @echo '                    (your) ~/bin/installkernel or'
   @echo '                    (distribution) /sbin/installkernel or'
   @echo '                    install to $$(INSTALL_PATH) and run lilo'
   @echo '  *_defconfig     - Select default config from arch/$(ARCH)/configs'
+  @echo ''
+  @echo '  Targets with <dt> embed a device tree blob inside the image'
+  @echo '  These targets support board with firmware that does not'
+  @echo '  support passing a device tree directly.  Replace <dt> with the'
+  @echo '  name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
+  @echo '  (minus the .dts extension).'
 endef
 
 install:

arch/powerpc/boot/Makefile

@@ -68,7 +68,7 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
 		fixed-head.S ep88xc.c ep405.c cuboot-c2k.c \
 		cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
 		cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
-		virtex405-head.S redboot-83xx.c cuboot-sam440ep.c
+		virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -276,6 +276,9 @@ ifeq ($(CONFIG_PPC32),y)
 image-$(CONFIG_PPC_PMAC)	+= zImage.coff zImage.miboot
 endif
 
+# Allow extra targets to be added to the defconfig
+image-y	+= $(subst ",,$(CONFIG_EXTRA_TARGETS))
+
 initrd-  := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
 initrd-y := $(patsubst zImage%, zImage.initrd%, \
 		$(patsubst dtbImage%, dtbImage.initrd%, \

arch/powerpc/boot/dts/virtex440-ml507.dts

@@ -0,0 +1,296 @@
+/*
+ * This file supports the Xilinx ML507 board with the 440 processor.
+ * A reference design for the FPGA is provided at http://git.xilinx.com.
+ *
+ * (C) Copyright 2008 Xilinx, 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.
+ */
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "xlnx,virtex440";
+	dcr-parent = <&ppc440_0>;
+	model = "testing";
+	DDR2_SDRAM: memory@0 {
+		device_type = "memory";
+		reg = < 0 0x10000000 >;
+	} ;
+	chosen {
+		bootargs = "console=ttyS0 ip=on root=/dev/ram";
+		linux,stdout-path = "/plb@0/serial@83e00000";
+	} ;
+	cpus {
+		#address-cells = <1>;
+		#cpus = <1>;
+		#size-cells = <0>;
+		ppc440_0: cpu@0 {
+			clock-frequency = <400000000>;
+			compatible = "PowerPC,440", "ibm,ppc440";
+			d-cache-line-size = <0x20>;
+			d-cache-size = <0x8000>;
+			dcr-access-method = "native";
+			dcr-controller ;
+			device_type = "cpu";
+			i-cache-line-size = <0x20>;
+			i-cache-size = <0x8000>;
+			model = "PowerPC,440";
+			reg = <0>;
+			timebase-frequency = <400000000>;
+			xlnx,apu-control = <1>;
+			xlnx,apu-udi-0 = <0>;
+			xlnx,apu-udi-1 = <0>;
+			xlnx,apu-udi-10 = <0>;
+			xlnx,apu-udi-11 = <0>;
+			xlnx,apu-udi-12 = <0>;
+			xlnx,apu-udi-13 = <0>;
+			xlnx,apu-udi-14 = <0>;
+			xlnx,apu-udi-15 = <0>;
+			xlnx,apu-udi-2 = <0>;
+			xlnx,apu-udi-3 = <0>;
+			xlnx,apu-udi-4 = <0>;
+			xlnx,apu-udi-5 = <0>;
+			xlnx,apu-udi-6 = <0>;
+			xlnx,apu-udi-7 = <0>;
+			xlnx,apu-udi-8 = <0>;
+			xlnx,apu-udi-9 = <0>;
+			xlnx,dcr-autolock-enable = <1>;
+			xlnx,dcu-rd-ld-cache-plb-prio = <0>;
+			xlnx,dcu-rd-noncache-plb-prio = <0>;
+			xlnx,dcu-rd-touch-plb-prio = <0>;
+			xlnx,dcu-rd-urgent-plb-prio = <0>;
+			xlnx,dcu-wr-flush-plb-prio = <0>;
+			xlnx,dcu-wr-store-plb-prio = <0>;
+			xlnx,dcu-wr-urgent-plb-prio = <0>;
+			xlnx,dma0-control = <0>;
+			xlnx,dma0-plb-prio = <0>;
+			xlnx,dma0-rxchannelctrl = <0x1010000>;
+			xlnx,dma0-rxirqtimer = <0x3ff>;
+			xlnx,dma0-txchannelctrl = <0x1010000>;
+			xlnx,dma0-txirqtimer = <0x3ff>;
+			xlnx,dma1-control = <0>;
+			xlnx,dma1-plb-prio = <0>;
+			xlnx,dma1-rxchannelctrl = <0x1010000>;
+			xlnx,dma1-rxirqtimer = <0x3ff>;
+			xlnx,dma1-txchannelctrl = <0x1010000>;
+			xlnx,dma1-txirqtimer = <0x3ff>;
+			xlnx,dma2-control = <0>;
+			xlnx,dma2-plb-prio = <0>;
+			xlnx,dma2-rxchannelctrl = <0x1010000>;
+			xlnx,dma2-rxirqtimer = <0x3ff>;
+			xlnx,dma2-txchannelctrl = <0x1010000>;
+			xlnx,dma2-txirqtimer = <0x3ff>;
+			xlnx,dma3-control = <0>;
+			xlnx,dma3-plb-prio = <0>;
+			xlnx,dma3-rxchannelctrl = <0x1010000>;
+			xlnx,dma3-rxirqtimer = <0x3ff>;
+			xlnx,dma3-txchannelctrl = <0x1010000>;
+			xlnx,dma3-txirqtimer = <0x3ff>;
+			xlnx,endian-reset = <0>;
+			xlnx,generate-plb-timespecs = <1>;
+			xlnx,icu-rd-fetch-plb-prio = <0>;
+			xlnx,icu-rd-spec-plb-prio = <0>;
+			xlnx,icu-rd-touch-plb-prio = <0>;
+			xlnx,interconnect-imask = <0xffffffff>;
+			xlnx,mplb-allow-lock-xfer = <1>;
+			xlnx,mplb-arb-mode = <0>;
+			xlnx,mplb-awidth = <0x20>;
+			xlnx,mplb-counter = <0x500>;
+			xlnx,mplb-dwidth = <0x80>;
+			xlnx,mplb-max-burst = <8>;
+			xlnx,mplb-native-dwidth = <0x80>;
+			xlnx,mplb-p2p = <0>;
+			xlnx,mplb-prio-dcur = <2>;
+			xlnx,mplb-prio-dcuw = <3>;
+			xlnx,mplb-prio-icu = <4>;
+			xlnx,mplb-prio-splb0 = <1>;
+			xlnx,mplb-prio-splb1 = <0>;
+			xlnx,mplb-read-pipe-enable = <1>;
+			xlnx,mplb-sync-tattribute = <0>;
+			xlnx,mplb-wdog-enable = <1>;
+			xlnx,mplb-write-pipe-enable = <1>;
+			xlnx,mplb-write-post-enable = <1>;
+			xlnx,num-dma = <1>;
+			xlnx,pir = <0xf>;
+			xlnx,ppc440mc-addr-base = <0>;
+			xlnx,ppc440mc-addr-high = <0xfffffff>;
+			xlnx,ppc440mc-arb-mode = <0>;
+			xlnx,ppc440mc-bank-conflict-mask = <0xc00000>;
+			xlnx,ppc440mc-control = <0xf810008f>;
+			xlnx,ppc440mc-max-burst = <8>;
+			xlnx,ppc440mc-prio-dcur = <2>;
+			xlnx,ppc440mc-prio-dcuw = <3>;
+			xlnx,ppc440mc-prio-icu = <4>;
+			xlnx,ppc440mc-prio-splb0 = <1>;
+			xlnx,ppc440mc-prio-splb1 = <0>;
+			xlnx,ppc440mc-row-conflict-mask = <0x3ffe00>;
+			xlnx,ppcdm-asyncmode = <0>;
+			xlnx,ppcds-asyncmode = <0>;
+			xlnx,user-reset = <0>;
+			DMA0: sdma@80 {
+				compatible = "xlnx,ll-dma-1.00.a";
+				dcr-reg = < 0x80 0x11 >;
+				interrupt-parent = <&xps_intc_0>;
+				interrupts = < 9 2 0xa 2 >;
+			} ;
+		} ;
+	} ;
+	plb_v46_0: plb@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "xlnx,plb-v46-1.02.a", "simple-bus";
+		ranges ;
+		DIP_Switches_8Bit: gpio@81460000 {
+			compatible = "xlnx,xps-gpio-1.00.a";
+			interrupt-parent = <&xps_intc_0>;
+			interrupts = < 6 2 >;
+			reg = < 0x81460000 0x10000 >;
+			xlnx,all-inputs = <1>;
+			xlnx,all-inputs-2 = <0>;
+			xlnx,dout-default = <0>;
+			xlnx,dout-default-2 = <0>;
+			xlnx,family = "virtex5";
+			xlnx,gpio-width = <8>;
+			xlnx,interrupt-present = <1>;
+			xlnx,is-bidir = <1>;
+			xlnx,is-bidir-2 = <1>;
+			xlnx,is-dual = <0>;
+			xlnx,tri-default = <0xffffffff>;
+			xlnx,tri-default-2 = <0xffffffff>;
+		} ;
+		Hard_Ethernet_MAC: xps-ll-temac@81c00000 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "xlnx,compound";
+			ethernet@81c00000 {
+				compatible = "xlnx,xps-ll-temac-1.01.b";
+				device_type = "network";
+				interrupt-parent = <&xps_intc_0>;
+				interrupts = < 5 2 >;
+				llink-connected = <&DMA0>;
+				local-mac-address = [ 02 00 00 00 00 00 ];
+				reg = < 0x81c00000 0x40 >;
+				xlnx,bus2core-clk-ratio = <1>;
+				xlnx,phy-type = <1>;
+				xlnx,phyaddr = <1>;
+				xlnx,rxcsum = <1>;
+				xlnx,rxfifo = <0x1000>;
+				xlnx,temac-type = <0>;
+				xlnx,txcsum = <1>;
+				xlnx,txfifo = <0x1000>;
+			} ;
+		} ;
+		LEDs_8Bit: gpio@81400000 {
+			compatible = "xlnx,xps-gpio-1.00.a";
+			reg = < 0x81400000 0x10000 >;
+			xlnx,all-inputs = <0>;
+			xlnx,all-inputs-2 = <0>;
+			xlnx,dout-default = <0>;
+			xlnx,dout-default-2 = <0>;
+			xlnx,family = "virtex5";
+			xlnx,gpio-width = <8>;
+			xlnx,interrupt-present = <0>;
+			xlnx,is-bidir = <1>;
+			xlnx,is-bidir-2 = <1>;
+			xlnx,is-dual = <0>;
+			xlnx,tri-default = <0xffffffff>;
+			xlnx,tri-default-2 = <0xffffffff>;
+		} ;
+		LEDs_Positions: gpio@81420000 {
+			compatible = "xlnx,xps-gpio-1.00.a";
+			reg = < 0x81420000 0x10000 >;
+			xlnx,all-inputs = <0>;
+			xlnx,all-inputs-2 = <0>;
+			xlnx,dout-default = <0>;
+			xlnx,dout-default-2 = <0>;
+			xlnx,family = "virtex5";
+			xlnx,gpio-width = <5>;
+			xlnx,interrupt-present = <0>;
+			xlnx,is-bidir = <1>;
+			xlnx,is-bidir-2 = <1>;
+			xlnx,is-dual = <0>;
+			xlnx,tri-default = <0xffffffff>;
+			xlnx,tri-default-2 = <0xffffffff>;
+		} ;
+		Push_Buttons_5Bit: gpio@81440000 {
+			compatible = "xlnx,xps-gpio-1.00.a";
+			interrupt-parent = <&xps_intc_0>;
+			interrupts = < 7 2 >;
+			reg = < 0x81440000 0x10000 >;
+			xlnx,all-inputs = <1>;
+			xlnx,all-inputs-2 = <0>;
+			xlnx,dout-default = <0>;
+			xlnx,dout-default-2 = <0>;
+			xlnx,family = "virtex5";
+			xlnx,gpio-width = <5>;
+			xlnx,interrupt-present = <1>;
+			xlnx,is-bidir = <1>;
+			xlnx,is-bidir-2 = <1>;
+			xlnx,is-dual = <0>;
+			xlnx,tri-default = <0xffffffff>;
+			xlnx,tri-default-2 = <0xffffffff>;
+		} ;
+		RS232_Uart_1: serial@83e00000 {
+			clock-frequency = <100000000>;
+			compatible = "xlnx,xps-uart16550-2.00.a", "ns16550";
+			current-speed = <0x2580>;
+			device_type = "serial";
+			interrupt-parent = <&xps_intc_0>;
+			interrupts = < 8 2 >;
+			reg = < 0x83e00000 0x10000 >;
+			reg-offset = <3>;
+			reg-shift = <2>;
+			xlnx,family = "virtex5";
+			xlnx,has-external-rclk = <0>;
+			xlnx,has-external-xin = <0>;
+			xlnx,is-a-16550 = <1>;
+		} ;
+		SysACE_CompactFlash: sysace@83600000 {
+			compatible = "xlnx,xps-sysace-1.00.a";
+			interrupt-parent = <&xps_intc_0>;
+			interrupts = < 4 2 >;
+			reg = < 0x83600000 0x10000 >;
+			xlnx,family = "virtex5";
+			xlnx,mem-width = <0x10>;
+		} ;
+		xps_bram_if_cntlr_1: xps-bram-if-cntlr@ffff0000 {
+			compatible = "xlnx,xps-bram-if-cntlr-1.00.a";
+			reg = < 0xffff0000 0x10000 >;
+			xlnx,family = "virtex5";
+		} ;
+		xps_intc_0: interrupt-controller@81800000 {
+			#interrupt-cells = <2>;
+			compatible = "xlnx,xps-intc-1.00.a";
+			interrupt-controller ;
+			reg = < 0x81800000 0x10000 >;
+			xlnx,num-intr-inputs = <0xb>;
+		} ;
+		xps_timebase_wdt_1: xps-timebase-wdt@83a00000 {
+			compatible = "xlnx,xps-timebase-wdt-1.00.b";
+			interrupt-parent = <&xps_intc_0>;
+			interrupts = < 2 0 1 2 >;
+			reg = < 0x83a00000 0x10000 >;
+			xlnx,family = "virtex5";
+			xlnx,wdt-enable-once = <0>;
+			xlnx,wdt-interval = <0x1e>;
+		} ;
+		xps_timer_1: timer@83c00000 {
+			compatible = "xlnx,xps-timer-1.00.a";
+			interrupt-parent = <&xps_intc_0>;
+			interrupts = < 3 2 >;
+			reg = < 0x83c00000 0x10000 >;
+			xlnx,count-width = <0x20>;
+			xlnx,family = "virtex5";
+			xlnx,gen0-assert = <1>;
+			xlnx,gen1-assert = <1>;
+			xlnx,one-timer-only = <1>;
+			xlnx,trig0-assert = <1>;
+			xlnx,trig1-assert = <1>;
+		} ;
+	} ;
+}  ;

arch/powerpc/boot/simpleboot.c

@@ -23,6 +23,8 @@
 
 BSS_STACK(4*1024);
 
+extern int platform_specific_init(void) __attribute__((weak));
+
 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 		   unsigned long r6, unsigned long r7)
 {
@@ -80,5 +82,9 @@ void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 
 	/* prepare the device tree and find the console */
 	fdt_init(_dtb_start);
+
+	if (platform_specific_init)
+		platform_specific_init();
+
 	serial_console_init();
 }

arch/powerpc/boot/virtex.c

@@ -0,0 +1,100 @@
+/*
+ * The platform specific code for virtex devices since a boot loader is not
+ * always used.
+ *
+ * (C) Copyright 2008 Xilinx, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "io.h"
+#include "stdio.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_FCR_CLEAR_RCVR 	0x02 	/* Clear the RCVR FIFO */
+#define UART_FCR_CLEAR_XMIT	0x04 	/* Clear the XMIT FIFO */
+#define UART_LCR		3	/* Out: Line Control Register */
+#define UART_MCR		4	/* Out: Modem Control Register */
+#define UART_MCR_RTS		0x02 	/* RTS complement */
+#define UART_MCR_DTR		0x01 	/* DTR complement */
+#define UART_LCR_DLAB		0x80 	/* Divisor latch access bit */
+#define UART_LCR_WLEN8		0x03 	/* Wordlength: 8 bits */
+
+static int virtex_ns16550_console_init(void *devp)
+{
+	unsigned char *reg_base;
+	u32 reg_shift, reg_offset, clk, spd;
+	u16 divisor;
+	int n;
+
+	if (dt_get_virtual_reg(devp, (void **)&reg_base, 1) < 1)
+		return -1;
+
+	n = getprop(devp, "reg-offset", &reg_offset, sizeof(reg_offset));
+	if (n == sizeof(reg_offset))
+		reg_base += reg_offset;
+
+	n = getprop(devp, "reg-shift", &reg_shift, sizeof(reg_shift));
+	if (n != sizeof(reg_shift))
+		reg_shift = 0;
+
+	n = getprop(devp, "current-speed", (void *)&spd, sizeof(spd));
+	if (n != sizeof(spd))
+		spd = 9600;
+
+	/* should there be a default clock rate?*/
+	n = getprop(devp, "clock-frequency", (void *)&clk, sizeof(clk));
+	if (n != sizeof(clk))
+		return -1;
+
+	divisor = clk / (16 * spd);
+
+	/* Access baud rate */
+	out_8(reg_base + (UART_LCR << reg_shift), UART_LCR_DLAB);
+
+	/* Baud rate based on input clock */
+	out_8(reg_base + (UART_DLL << reg_shift), divisor & 0xFF);
+	out_8(reg_base + (UART_DLM << reg_shift), divisor >> 8);
+
+	/* 8 data, 1 stop, no parity */
+	out_8(reg_base + (UART_LCR << reg_shift), UART_LCR_WLEN8);
+
+	/* RTS/DTR */
+	out_8(reg_base + (UART_MCR << reg_shift), UART_MCR_RTS | UART_MCR_DTR);
+
+	/* Clear transmitter and receiver */
+	out_8(reg_base + (UART_FCR << reg_shift),
+				UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR);
+	return 0;
+}
+
+/* For virtex, the kernel may be loaded without using a bootloader and if so
+   some UARTs need more setup than is provided in the normal console init
+*/
+int platform_specific_init(void)
+{
+	void *devp;
+	char devtype[MAX_PROP_LEN];
+	char path[MAX_PATH_LEN];
+
+	devp = finddevice("/chosen");
+	if (devp == NULL)
+		return -1;
+
+	if (getprop(devp, "linux,stdout-path", path, MAX_PATH_LEN) > 0) {
+		devp = finddevice(path);
+		if (devp == NULL)
+			return -1;
+
+		if ((getprop(devp, "device_type", devtype, sizeof(devtype)) > 0)
+				&& !strcmp(devtype, "serial")
+				&& (dt_is_compatible(devp, "ns16550")))
+				virtex_ns16550_console_init(devp);
+	}
+	return 0;
+}

arch/powerpc/boot/wrapper

@@ -207,7 +207,15 @@ adder875-redboot)
     binary=y
     ;;
 simpleboot-virtex405-*)
-    platformo="$object/virtex405-head.o $object/simpleboot.o"
+    platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
+    binary=y
+    ;;
+simpleboot-virtex440-*)
+    platformo="$object/simpleboot.o $object/virtex.o"
+    binary=y
+    ;;
+simpleboot-*)
+    platformo="$object/simpleboot.o"
     binary=y
     ;;
 asp834x-redboot)

arch/powerpc/configs/ppc44x_defconfig

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.25-rc6
+# Linux kernel version: 2.6.26-rc8
-# Sat Apr  5 09:35:48 2008
+# Wed Jul  9 13:50:48 2008
 #
 # CONFIG_PPC64 is not set
 
@@ -32,6 +32,8 @@ CONFIG_GENERIC_CLOCKEVENTS=y
 CONFIG_GENERIC_HARDIRQS=y
 # CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
 CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
 CONFIG_ARCH_HAS_ILOG2_U32=y
 CONFIG_GENERIC_HWEIGHT=y
@@ -88,6 +90,7 @@ CONFIG_INITRAMFS_SOURCE=""
 CONFIG_SYSCTL=y
 CONFIG_EMBEDDED=y
 CONFIG_SYSCTL_SYSCALL=y
+CONFIG_SYSCTL_SYSCALL_CHECK=y
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_KALLSYMS_EXTRA_PASS=y
@@ -115,12 +118,14 @@ CONFIG_HAVE_OPROFILE=y
 # CONFIG_KPROBES is not set
 CONFIG_HAVE_KPROBES=y
 CONFIG_HAVE_KRETPROBES=y
+# CONFIG_HAVE_DMA_ATTRS is not set
 CONFIG_PROC_PAGE_MONITOR=y
 CONFIG_SLABINFO=y
 CONFIG_RT_MUTEXES=y
 # CONFIG_TINY_SHMEM is not set
 CONFIG_BASE_SMALL=0
 CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_MODULE_FORCE_UNLOAD is not set
 # CONFIG_MODVERSIONS is not set
@@ -157,6 +162,7 @@ CONFIG_PPC4xx_PCI_EXPRESS=y
 # CONFIG_PQ2ADS is not set
 CONFIG_BAMBOO=y
 CONFIG_EBONY=y
+CONFIG_SAM440EP=y
 CONFIG_SEQUOIA=y
 CONFIG_TAISHAN=y
 CONFIG_KATMAI=y
@@ -164,6 +170,7 @@ CONFIG_RAINIER=y
 CONFIG_WARP=y
 CONFIG_CANYONLANDS=y
 CONFIG_YOSEMITE=y
+CONFIG_XILINX_VIRTEX440_GENERIC_BOARD=y
 CONFIG_440EP=y
 CONFIG_440EPX=y
 CONFIG_440GRX=y
@@ -172,6 +179,8 @@ CONFIG_440GX=y
 CONFIG_440SPe=y
 CONFIG_460EX=y
 CONFIG_IBM440EP_ERR42=y
+CONFIG_XILINX_VIRTEX=y
+CONFIG_XILINX_VIRTEX_5_FXT=y
 # CONFIG_IPIC is not set
 # CONFIG_MPIC is not set
 # CONFIG_MPIC_WEIRD is not set
@@ -220,13 +229,16 @@ CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
 # CONFIG_SPARSEMEM_STATIC is not set
 # CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
 CONFIG_SPLIT_PTLOCK_CPUS=4
 CONFIG_RESOURCES_64BIT=y
 CONFIG_ZONE_DMA_FLAG=1
 CONFIG_BOUNCE=y
 CONFIG_VIRT_TO_BUS=y
+CONFIG_FORCE_MAX_ZONEORDER=11
 CONFIG_PROC_DEVICETREE=y
 # CONFIG_CMDLINE_BOOL is not set
+CONFIG_EXTRA_TARGETS=""
 CONFIG_SECCOMP=y
 CONFIG_ISA_DMA_API=y
 
@@ -246,6 +258,7 @@ CONFIG_PCI_LEGACY=y
 # CONFIG_PCI_DEBUG is not set
 # CONFIG_PCCARD is not set
 # CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HAS_RAPIDIO is not set
 
 #
 # Advanced setup
@@ -255,13 +268,13 @@ CONFIG_PCI_LEGACY=y
 #
 # Default settings for advanced configuration options are used
 #
-CONFIG_HIGHMEM_START=0xfe000000
 CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_PAGE_OFFSET=0xc0000000
 CONFIG_KERNEL_START=0xc0000000
+CONFIG_PHYSICAL_START=0x00000000
 CONFIG_TASK_SIZE=0xc0000000
 CONFIG_CONSISTENT_START=0xff100000
 CONFIG_CONSISTENT_SIZE=0x00200000
-CONFIG_BOOT_LOAD=0x01000000
 
 #
 # Networking
@@ -303,8 +316,6 @@ CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
 # CONFIG_TCP_MD5SIG is not set
 # CONFIG_IPV6 is not set
-# CONFIG_INET6_XFRM_TUNNEL is not set
-# CONFIG_INET6_TUNNEL is not set
 # CONFIG_NETWORK_SECMARK is not set
 # CONFIG_NETFILTER is not set
 # CONFIG_IP_DCCP is not set
@@ -366,6 +377,7 @@ CONFIG_MTD_PARTITIONS=y
 # CONFIG_MTD_REDBOOT_PARTS is not set
 # CONFIG_MTD_CMDLINE_PARTS is not set
 CONFIG_MTD_OF_PARTS=y
+# CONFIG_MTD_AR7_PARTS is not set
 
 #
 # User Modules And Translation Layers
@@ -478,6 +490,10 @@ CONFIG_HAVE_IDE=y
 #
 # IEEE 1394 (FireWire) support
 #
+
+#
+# Enable only one of the two stacks, unless you know what you are doing
+#
 # CONFIG_FIREWIRE is not set
 # CONFIG_IEEE1394 is not set
 # CONFIG_I2O is not set
@@ -528,7 +544,6 @@ CONFIG_NETDEV_1000=y
 # CONFIG_SIS190 is not set
 # CONFIG_SKGE is not set
 # CONFIG_SKY2 is not set
-# CONFIG_SK98LIN is not set
 # CONFIG_VIA_VELOCITY is not set
 # CONFIG_TIGON3 is not set
 # CONFIG_BNX2 is not set
@@ -546,6 +561,7 @@ CONFIG_NETDEV_10000=y
 # CONFIG_MLX4_CORE is not set
 # CONFIG_TEHUTI is not set
 # CONFIG_BNX2X is not set
+# CONFIG_SFC is not set
 # CONFIG_TR is not set
 
 #
@@ -553,6 +569,7 @@ CONFIG_NETDEV_10000=y
 #
 # CONFIG_WLAN_PRE80211 is not set
 # CONFIG_WLAN_80211 is not set
+# CONFIG_IWLWIFI_LEDS is not set
 # CONFIG_WAN is not set
 # CONFIG_FDDI is not set
 # CONFIG_HIPPI is not set
@@ -579,6 +596,7 @@ CONFIG_NETDEV_10000=y
 # Character devices
 #
 # CONFIG_VT is not set
+CONFIG_DEVKMEM=y
 # CONFIG_SERIAL_NONSTANDARD is not set
 # CONFIG_NOZOMI is not set
 
@@ -611,22 +629,19 @@ CONFIG_LEGACY_PTY_COUNT=256
 # CONFIG_HW_RANDOM is not set
 # CONFIG_NVRAM is not set
 # CONFIG_GEN_RTC is not set
+CONFIG_XILINX_HWICAP=m
 # CONFIG_R3964 is not set
 # CONFIG_APPLICOM is not set
 # CONFIG_RAW_DRIVER is not set
 # CONFIG_TCG_TPM is not set
 CONFIG_DEVPORT=y
 # CONFIG_I2C is not set
-
-#
-# SPI support
-#
 # CONFIG_SPI is not set
-# CONFIG_SPI_MASTER is not set
 # CONFIG_W1 is not set
 # CONFIG_POWER_SUPPLY is not set
 # CONFIG_HWMON is not set
 # CONFIG_THERMAL is not set
+# CONFIG_THERMAL_HWMON is not set
 # CONFIG_WATCHDOG is not set
 
 #
@@ -639,12 +654,22 @@ CONFIG_SSB_POSSIBLE=y
 # Multifunction device drivers
 #
 # CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
 
 #
 # Multimedia devices
 #
+
+#
+# Multimedia core support
+#
 # CONFIG_VIDEO_DEV is not set
 # CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
 # CONFIG_DAB is not set
 
 #
@@ -671,6 +696,8 @@ CONFIG_USB_ARCH_HAS_HCD=y
 CONFIG_USB_ARCH_HAS_OHCI=y
 CONFIG_USB_ARCH_HAS_EHCI=y
 # CONFIG_USB is not set
+# CONFIG_USB_OTG_WHITELIST is not set
+# CONFIG_USB_OTG_BLACKLIST_HUB is not set
 
 #
 # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
@@ -679,14 +706,11 @@ CONFIG_USB_ARCH_HAS_EHCI=y
 # CONFIG_MMC is not set
 # CONFIG_MEMSTICK is not set
 # CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
 # CONFIG_INFINIBAND is not set
 # CONFIG_EDAC is not set
 # CONFIG_RTC_CLASS is not set
 # CONFIG_DMADEVICES is not set
-
-#
-# Userspace I/O
-#
 # CONFIG_UIO is not set
 
 #
@@ -701,7 +725,6 @@ CONFIG_EXT2_FS=y
 # CONFIG_JFS_FS is not set
 # CONFIG_FS_POSIX_ACL is not set
 # CONFIG_XFS_FS is not set
-# CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
 CONFIG_DNOTIFY=y
 CONFIG_INOTIFY=y
@@ -770,7 +793,6 @@ CONFIG_NFS_FS=y
 CONFIG_NFS_V3=y
 # CONFIG_NFS_V3_ACL is not set
 # CONFIG_NFS_V4 is not set
-# CONFIG_NFS_DIRECTIO is not set
 # CONFIG_NFSD is not set
 CONFIG_ROOT_NFS=y
 CONFIG_LOCKD=y
@@ -798,6 +820,7 @@ CONFIG_MSDOS_PARTITION=y
 # Library routines
 #
 CONFIG_BITREVERSE=y
+# CONFIG_GENERIC_FIND_FIRST_BIT is not set
 # CONFIG_CRC_CCITT is not set
 # CONFIG_CRC16 is not set
 # CONFIG_CRC_ITU_T is not set
@@ -818,6 +841,7 @@ CONFIG_HAVE_LMB=y
 # CONFIG_PRINTK_TIME is not set
 CONFIG_ENABLE_WARN_DEPRECATED=y
 CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
 # CONFIG_DEBUG_FS is not set
@@ -828,6 +852,7 @@ CONFIG_DETECT_SOFTLOCKUP=y
 CONFIG_SCHED_DEBUG=y
 # CONFIG_SCHEDSTATS is not set
 # CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
 # CONFIG_SLUB_DEBUG_ON is not set
 # CONFIG_SLUB_STATS is not set
 # CONFIG_DEBUG_RT_MUTEXES is not set
@@ -840,6 +865,7 @@ CONFIG_SCHED_DEBUG=y
 CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_INFO is not set
 # CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
 # CONFIG_DEBUG_LIST is not set
 # CONFIG_DEBUG_SG is not set
 # CONFIG_BOOT_PRINTK_DELAY is not set
@@ -851,6 +877,9 @@ CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_STACK_USAGE is not set
 # CONFIG_DEBUG_PAGEALLOC is not set
 # CONFIG_DEBUGGER is not set
+# CONFIG_CODE_PATCHING_SELFTEST is not set
+# CONFIG_FTR_FIXUP_SELFTEST is not set
+# CONFIG_IRQSTACKS is not set
 # CONFIG_BDI_SWITCH is not set
 # CONFIG_PPC_EARLY_DEBUG is not set
 
@@ -861,50 +890,80 @@ CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_SECURITY is not set
 # CONFIG_SECURITY_FILE_CAPABILITIES is not set
 CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
 CONFIG_CRYPTO_ALGAPI=y
 CONFIG_CRYPTO_BLKCIPHER=y
-# CONFIG_CRYPTO_SEQIV is not set
 CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+CONFIG_CRYPTO_ECB=y
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
 # CONFIG_CRYPTO_HMAC is not set
 # CONFIG_CRYPTO_XCBC is not set
-# CONFIG_CRYPTO_NULL is not set
+
+#
+# Digest
+#
+# CONFIG_CRYPTO_CRC32C is not set
 # CONFIG_CRYPTO_MD4 is not set
 CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
 # CONFIG_CRYPTO_SHA1 is not set
 # CONFIG_CRYPTO_SHA256 is not set
 # CONFIG_CRYPTO_SHA512 is not set
-# CONFIG_CRYPTO_WP512 is not set
 # CONFIG_CRYPTO_TGR192 is not set
-# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_WP512 is not set
-CONFIG_CRYPTO_ECB=y
+
-CONFIG_CRYPTO_CBC=y
+#
-CONFIG_CRYPTO_PCBC=y
+# Ciphers
-# CONFIG_CRYPTO_LRW is not set
+#
-# CONFIG_CRYPTO_XTS is not set
-# CONFIG_CRYPTO_CTR is not set
-# CONFIG_CRYPTO_GCM is not set
-# CONFIG_CRYPTO_CCM is not set
-# CONFIG_CRYPTO_CRYPTD is not set
-CONFIG_CRYPTO_DES=y
-# CONFIG_CRYPTO_FCRYPT is not set
-# CONFIG_CRYPTO_BLOWFISH is not set
-# CONFIG_CRYPTO_TWOFISH is not set
-# CONFIG_CRYPTO_SERPENT is not set
 # CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
 # CONFIG_CRYPTO_CAST5 is not set
 # CONFIG_CRYPTO_CAST6 is not set
-# CONFIG_CRYPTO_TEA is not set
+CONFIG_CRYPTO_DES=y
-# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_FCRYPT is not set
 # CONFIG_CRYPTO_KHAZAD is not set
-# CONFIG_CRYPTO_ANUBIS is not set
-# CONFIG_CRYPTO_SEED is not set
 # CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
 # CONFIG_CRYPTO_DEFLATE is not set
-# CONFIG_CRYPTO_MICHAEL_MIC is not set
-# CONFIG_CRYPTO_CRC32C is not set
-# CONFIG_CRYPTO_CAMELLIA is not set
-# CONFIG_CRYPTO_TEST is not set
-# CONFIG_CRYPTO_AUTHENC is not set
 # CONFIG_CRYPTO_LZO is not set
 # CONFIG_CRYPTO_HW is not set
 # CONFIG_PPC_CLOCK is not set
+# CONFIG_VIRTUALIZATION is not set

arch/powerpc/kernel/cputable.c

@@ -1447,6 +1447,16 @@ static struct cpu_spec __initdata cpu_specs[] = {
 		.machine_check		= machine_check_440A,
 		.platform		= "ppc440",
 	},
+	{ /* 440 in Xilinx Virtex-5 FXT */
+		.pvr_mask		= 0xfffffff0,
+		.pvr_value		= 0x7ff21910,
+		.cpu_name		= "440 in Virtex-5 FXT",
+		.cpu_features		= CPU_FTRS_44X,
+		.cpu_user_features	= COMMON_USER_BOOKE,
+		.icache_bsize		= 32,
+		.dcache_bsize		= 32,
+		.platform		= "ppc440",
+	},
 	{ /* 460EX */
 		.pvr_mask		= 0xffff0002,
 		.pvr_value		= 0x13020002,

arch/powerpc/kernel/head_44x.S

@@ -293,117 +293,7 @@ interrupt_base:
 	MCHECK_EXCEPTION(0x0210, MachineCheckA, machine_check_exception)
 
 	/* Data Storage Interrupt */
-	START_EXCEPTION(DataStorage)
+	DATA_STORAGE_EXCEPTION
-	mtspr	SPRN_SPRG0, r10		/* Save some working registers */
-	mtspr	SPRN_SPRG1, r11
-	mtspr	SPRN_SPRG4W, r12
-	mtspr	SPRN_SPRG5W, r13
-	mfcr	r11
-	mtspr	SPRN_SPRG7W, r11
-
-	/*
-	 * Check if it was a store fault, if not then bail
-	 * because a user tried to access a kernel or
-	 * read-protected page.  Otherwise, get the
-	 * offending address and handle it.
-	 */
-	mfspr	r10, SPRN_ESR
-	andis.	r10, r10, ESR_ST@h
-	beq	2f
-
-	mfspr	r10, SPRN_DEAR		/* Get faulting address */
-
-	/* If we are faulting a kernel address, we have to use the
-	 * kernel page tables.
-	 */
-	lis	r11, PAGE_OFFSET@h
-	cmplw	r10, r11
-	blt+	3f
-	lis	r11, swapper_pg_dir@h
-	ori	r11, r11, swapper_pg_dir@l
-
-	mfspr   r12,SPRN_MMUCR
-	rlwinm	r12,r12,0,0,23		/* Clear TID */
-
-	b	4f
-
-	/* Get the PGD for the current thread */
-3:
-	mfspr	r11,SPRN_SPRG3
-	lwz	r11,PGDIR(r11)
-
-	/* Load PID into MMUCR TID */
-	mfspr	r12,SPRN_MMUCR		/* Get MMUCR */
-	mfspr   r13,SPRN_PID		/* Get PID */
-	rlwimi	r12,r13,0,24,31		/* Set TID */
-
-4:
-	mtspr   SPRN_MMUCR,r12
-
-	rlwinm  r12, r10, 13, 19, 29    /* Compute pgdir/pmd offset */
-	lwzx    r11, r12, r11           /* Get pgd/pmd entry */
-	rlwinm. r12, r11, 0, 0, 20      /* Extract pt base address */
-	beq     2f                      /* Bail if no table */
-
-	rlwimi  r12, r10, 23, 20, 28    /* Compute pte address */
-	lwz     r11, 4(r12)             /* Get pte entry */
-
-	andi.	r13, r11, _PAGE_RW	/* Is it writeable? */
-	beq	2f			/* Bail if not */
-
-	/* Update 'changed'.
-	*/
-	ori	r11, r11, _PAGE_DIRTY|_PAGE_ACCESSED|_PAGE_HWWRITE
-	stw	r11, 4(r12)		/* Update Linux page table */
-
-	li	r13, PPC44x_TLB_SR@l	/* Set SR */
-	rlwimi	r13, r11, 29, 29, 29	/* SX = _PAGE_HWEXEC */
-	rlwimi	r13, r11, 0, 30, 30	/* SW = _PAGE_RW */
-	rlwimi	r13, r11, 29, 28, 28	/* UR = _PAGE_USER */
-	rlwimi	r12, r11, 31, 26, 26	/* (_PAGE_USER>>1)->r12 */
-	rlwimi	r12, r11, 29, 30, 30	/* (_PAGE_USER>>3)->r12 */
-	and	r12, r12, r11		/* HWEXEC/RW & USER */
-	rlwimi	r13, r12, 0, 26, 26	/* UX = HWEXEC & USER */
-	rlwimi	r13, r12, 3, 27, 27	/* UW = RW & USER */
-
-	rlwimi	r11,r13,0,26,31		/* Insert static perms */
-
-	/*
-	 * Clear U0-U3 and WL1 IL1I IL1D IL2I IL2D bits which are added
-	 * on newer 440 cores like the 440x6 used on AMCC 460EX/460GT (see
-	 * include/asm-powerpc/pgtable-ppc32.h for details).
-	 */
-	rlwinm	r11,r11,0,20,10
-
-	/* find the TLB index that caused the fault.  It has to be here. */
-	tlbsx	r10, 0, r10
-
-	tlbwe	r11, r10, PPC44x_TLB_ATTRIB	/* Write ATTRIB */
-
-	/* Done...restore registers and get out of here.
-	*/
-	mfspr	r11, SPRN_SPRG7R
-	mtcr	r11
-	mfspr	r13, SPRN_SPRG5R
-	mfspr	r12, SPRN_SPRG4R
-
-	mfspr	r11, SPRN_SPRG1
-	mfspr	r10, SPRN_SPRG0
-	rfi			/* Force context change */
-
-2:
-	/*
-	 * The bailout.  Restore registers to pre-exception conditions
-	 * and call the heavyweights to help us out.
-	 */
-	mfspr	r11, SPRN_SPRG7R
-	mtcr	r11
-	mfspr	r13, SPRN_SPRG5R
-	mfspr	r12, SPRN_SPRG4R
-
-	mfspr	r11, SPRN_SPRG1
-	mfspr	r10, SPRN_SPRG0
-	b	data_access
 
 		/* Instruction Storage Interrupt */
 	INSTRUCTION_STORAGE_EXCEPTION
@@ -423,7 +313,6 @@ interrupt_base:
 #else
 	EXCEPTION(0x2010, FloatingPointUnavailable, unknown_exception, EXC_XFER_EE)
 #endif
-
 	/* System Call Interrupt */
 	START_EXCEPTION(SystemCall)
 	NORMAL_EXCEPTION_PROLOG
@@ -484,18 +373,57 @@ interrupt_base:
 4:
 	mtspr	SPRN_MMUCR,r12
 
+	/* Mask of required permission bits. Note that while we
+	 * do copy ESR:ST to _PAGE_RW position as trying to write
+	 * to an RO page is pretty common, we don't do it with
+	 * _PAGE_DIRTY. We could do it, but it's a fairly rare
+	 * event so I'd rather take the overhead when it happens
+	 * rather than adding an instruction here. We should measure
+	 * whether the whole thing is worth it in the first place
+	 * as we could avoid loading SPRN_ESR completely in the first
+	 * place...
+	 *
+	 * TODO: Is it worth doing that mfspr & rlwimi in the first
+	 *       place or can we save a couple of instructions here ?
+	 */
+	mfspr	r12,SPRN_ESR
+	li	r13,_PAGE_PRESENT|_PAGE_ACCESSED
+	rlwimi	r13,r12,10,30,30
+
+	/* Load the PTE */
 	rlwinm 	r12, r10, 13, 19, 29	/* Compute pgdir/pmd offset */
 	lwzx	r11, r12, r11		/* Get pgd/pmd entry */
 	rlwinm.	r12, r11, 0, 0, 20	/* Extract pt base address */
 	beq	2f			/* Bail if no table */
 
 	rlwimi	r12, r10, 23, 20, 28	/* Compute pte address */
-	lwz	r11, 4(r12)		/* Get pte entry */
+	lwz	r11, 0(r12)		/* Get high word of pte entry */
-	andi.	r13, r11, _PAGE_PRESENT	/* Is the page present? */
+	lwz	r12, 4(r12)		/* Get low word of pte entry */
-	beq	2f			/* Bail if not present */
 
-	ori	r11, r11, _PAGE_ACCESSED
+	lis	r10,tlb_44x_index@ha
-	stw	r11, 4(r12)
+
+	andc.	r13,r13,r12		/* Check permission */
+
+	/* Load the next available TLB index */
+	lwz	r13,tlb_44x_index@l(r10)
+
+	bne	2f			/* Bail if permission mismach */
+
+	/* Increment, rollover, and store TLB index */
+	addi	r13,r13,1
+
+	/* Compare with watermark (instruction gets patched) */
+	.globl tlb_44x_patch_hwater_D
+tlb_44x_patch_hwater_D:
+	cmpwi	0,r13,1			/* reserve entries */
+	ble	5f
+	li	r13,0
+5:
+	/* Store the next available TLB index */
+	stw	r13,tlb_44x_index@l(r10)
+
+	/* Re-load the faulting address */
+	mfspr	r10,SPRN_DEAR
 
 	 /* Jump to common tlb load */
 	b	finish_tlb_load
@@ -510,7 +438,7 @@ interrupt_base:
 	mfspr	r12, SPRN_SPRG4R
 	mfspr	r11, SPRN_SPRG1
 	mfspr	r10, SPRN_SPRG0
-	b	data_access
+	b	DataStorage
 
 	/* Instruction TLB Error Interrupt */
 	/*
@@ -554,18 +482,42 @@ interrupt_base:
 4:
 	mtspr	SPRN_MMUCR,r12
 
+	/* Make up the required permissions */
+	li	r13,_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_HWEXEC
+
 	rlwinm	r12, r10, 13, 19, 29	/* Compute pgdir/pmd offset */
 	lwzx	r11, r12, r11		/* Get pgd/pmd entry */
 	rlwinm.	r12, r11, 0, 0, 20	/* Extract pt base address */
 	beq	2f			/* Bail if no table */
 
 	rlwimi	r12, r10, 23, 20, 28	/* Compute pte address */
-	lwz	r11, 4(r12)		/* Get pte entry */
+	lwz	r11, 0(r12)		/* Get high word of pte entry */
-	andi.	r13, r11, _PAGE_PRESENT	/* Is the page present? */
+	lwz	r12, 4(r12)		/* Get low word of pte entry */
-	beq	2f			/* Bail if not present */
 
-	ori	r11, r11, _PAGE_ACCESSED
+	lis	r10,tlb_44x_index@ha
-	stw	r11, 4(r12)
+
+	andc.	r13,r13,r12		/* Check permission */
+
+	/* Load the next available TLB index */
+	lwz	r13,tlb_44x_index@l(r10)
+
+	bne	2f			/* Bail if permission mismach */
+
+	/* Increment, rollover, and store TLB index */
+	addi	r13,r13,1
+
+	/* Compare with watermark (instruction gets patched) */
+	.globl tlb_44x_patch_hwater_I
+tlb_44x_patch_hwater_I:
+	cmpwi	0,r13,1			/* reserve entries */
+	ble	5f
+	li	r13,0
+5:
+	/* Store the next available TLB index */
+	stw	r13,tlb_44x_index@l(r10)
+
+	/* Re-load the faulting address */
+	mfspr	r10,SPRN_SRR0
 
 	/* Jump to common TLB load point */
 	b	finish_tlb_load
@@ -588,85 +540,39 @@ interrupt_base:
 /*
  * Local functions
   */
-	/*
-	 * Data TLB exceptions will bail out to this point
-	 * if they can't resolve the lightweight TLB fault.
-	 */
-data_access:
-	NORMAL_EXCEPTION_PROLOG
-	mfspr	r5,SPRN_ESR		/* Grab the ESR, save it, pass arg3 */
-	stw	r5,_ESR(r11)
-	mfspr	r4,SPRN_DEAR		/* Grab the DEAR, save it, pass arg2 */
-	EXC_XFER_EE_LITE(0x0300, handle_page_fault)
 
 /*
 
  * Both the instruction and data TLB miss get to this
  * point to load the TLB.
  * 	r10 - EA of fault
- * 	r11 - available to use
+ * 	r11 - PTE high word value
- *	r12 - Pointer to the 64-bit PTE
+ *	r12 - PTE low word value
- *	r13 - available to use
+ *	r13 - TLB index
  *	MMUCR - loaded with proper value when we get here
  *	Upon exit, we reload everything and RFI.
  */
 finish_tlb_load:
-	/*
+	/* Combine RPN & ERPN an write WS 0 */
-	 * We set execute, because we don't have the granularity to
+	rlwimi	r11,r12,0,0,19
-	 * properly set this at the page level (Linux problem).
+	tlbwe	r11,r13,PPC44x_TLB_XLAT
-	 * If shared is set, we cause a zero PID->TID load.
-	 * Many of these bits are software only.  Bits we don't set
-	 * here we (properly should) assume have the appropriate value.
-	 */
-
-	/* Load the next available TLB index */
-	lis	r13, tlb_44x_index@ha
-	lwz	r13, tlb_44x_index@l(r13)
-	/* Load the TLB high watermark */
-	lis	r11, tlb_44x_hwater@ha
-	lwz	r11, tlb_44x_hwater@l(r11)
-
-	/* Increment, rollover, and store TLB index */
-	addi	r13, r13, 1
-	cmpw	0, r13, r11			/* reserve entries */
-	ble	7f
-	li	r13, 0
-7:
-	/* Store the next available TLB index */
-	lis	r11, tlb_44x_index@ha
-	stw	r13, tlb_44x_index@l(r11)
-
-	lwz	r11, 0(r12)			/* Get MS word of PTE */
-	lwz	r12, 4(r12)			/* Get LS word of PTE */
-	rlwimi	r11, r12, 0, 0 , 19		/* Insert RPN */
-	tlbwe	r11, r13, PPC44x_TLB_XLAT	/* Write XLAT */
 
 	/*
-	 * Create PAGEID. This is the faulting address,
+	 * Create WS1. This is the faulting address (EPN),
 	 * page size, and valid flag.
 	 */
 	li	r11,PPC44x_TLB_VALID | PPC44x_TLB_4K
 	rlwimi	r10,r11,0,20,31			/* Insert valid and page size*/
 	tlbwe	r10,r13,PPC44x_TLB_PAGEID	/* Write PAGEID */
 
-	li	r10, PPC44x_TLB_SR@l		/* Set SR */
+	/* And WS 2 */
-	rlwimi	r10, r12, 0, 30, 30		/* Set SW = _PAGE_RW */
+	li	r10,0xf85			/* Mask to apply from PTE */
-	rlwimi	r10, r12, 29, 29, 29		/* SX = _PAGE_HWEXEC */
+	rlwimi	r10,r12,29,30,30		/* DIRTY -> SW position */
-	rlwimi	r10, r12, 29, 28, 28		/* UR = _PAGE_USER */
+	and	r11,r12,r10			/* Mask PTE bits to keep */
-	rlwimi	r11, r12, 31, 26, 26		/* (_PAGE_USER>>1)->r12 */
+	andi.	r10,r12,_PAGE_USER		/* User page ? */
-	and	r11, r12, r11			/* HWEXEC & USER */
+	beq	1f				/* nope, leave U bits empty */
-	rlwimi	r10, r11, 0, 26, 26		/* UX = HWEXEC & USER */
+	rlwimi	r11,r11,3,26,28			/* yes, copy S bits to U */
-
+1:	tlbwe	r11,r13,PPC44x_TLB_ATTRIB	/* Write ATTRIB */
-	rlwimi	r12, r10, 0, 26, 31		/* Insert static perms */
-
-	/*
-	 * Clear U0-U3 and WL1 IL1I IL1D IL2I IL2D bits which are added
-	 * on newer 440 cores like the 440x6 used on AMCC 460EX/460GT (see
-	 * include/asm-powerpc/pgtable-ppc32.h for details).
-	 */
-	rlwinm	r12, r12, 0, 20, 10
-
-	tlbwe	r12, r13, PPC44x_TLB_ATTRIB	/* Write ATTRIB */
 
 	/* Done...restore registers and get out of here.
 	*/

arch/powerpc/kernel/head_booke.h

@@ -340,6 +340,14 @@ label:
 	addi	r3,r1,STACK_FRAME_OVERHEAD;				      \
 	EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, crit_transfer_to_handler, ret_from_crit_exc)
 
+#define DATA_STORAGE_EXCEPTION						      \
+	START_EXCEPTION(DataStorage)					      \
+	NORMAL_EXCEPTION_PROLOG;					      \
+	mfspr	r5,SPRN_ESR;		/* Grab the ESR and save it */	      \
+	stw	r5,_ESR(r11);						      \
+	mfspr	r4,SPRN_DEAR;		/* Grab the DEAR */		      \
+	EXC_XFER_EE_LITE(0x0300, handle_page_fault)
+
 #define INSTRUCTION_STORAGE_EXCEPTION					      \
 	START_EXCEPTION(InstructionStorage)				      \
 	NORMAL_EXCEPTION_PROLOG;					      \

arch/powerpc/mm/44x_mmu.c

@@ -27,6 +27,7 @@
 #include <asm/mmu.h>
 #include <asm/system.h>
 #include <asm/page.h>
+#include <asm/cacheflush.h>
 
 #include "mmu_decl.h"
 
@@ -37,11 +38,35 @@ unsigned int tlb_44x_index; /* = 0 */
 unsigned int tlb_44x_hwater = PPC44x_TLB_SIZE - 1 - PPC44x_EARLY_TLBS;
 int icache_44x_need_flush;
 
+static void __init ppc44x_update_tlb_hwater(void)
+{
+	extern unsigned int tlb_44x_patch_hwater_D[];
+	extern unsigned int tlb_44x_patch_hwater_I[];
+
+	/* The TLB miss handlers hard codes the watermark in a cmpli
+	 * instruction to improve performances rather than loading it
+	 * from the global variable. Thus, we patch the instructions
+	 * in the 2 TLB miss handlers when updating the value
+	 */
+	tlb_44x_patch_hwater_D[0] = (tlb_44x_patch_hwater_D[0] & 0xffff0000) |
+		tlb_44x_hwater;
+	flush_icache_range((unsigned long)&tlb_44x_patch_hwater_D[0],
+			   (unsigned long)&tlb_44x_patch_hwater_D[1]);
+	tlb_44x_patch_hwater_I[0] = (tlb_44x_patch_hwater_I[0] & 0xffff0000) |
+		tlb_44x_hwater;
+	flush_icache_range((unsigned long)&tlb_44x_patch_hwater_I[0],
+			   (unsigned long)&tlb_44x_patch_hwater_I[1]);
+}
+
 /*
  * "Pins" a 256MB TLB entry in AS0 for kernel lowmem
  */
 static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys)
 {
+	unsigned int entry = tlb_44x_hwater--;
+
+	ppc44x_update_tlb_hwater();
+
 	__asm__ __volatile__(
 		"tlbwe	%2,%3,%4\n"
 		"tlbwe	%1,%3,%5\n"
@@ -50,7 +75,7 @@ static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys)
 	: "r" (PPC44x_TLB_SW | PPC44x_TLB_SR | PPC44x_TLB_SX | PPC44x_TLB_G),
 	  "r" (phys),
 	  "r" (virt | PPC44x_TLB_VALID | PPC44x_TLB_256M),
-	  "r" (tlb_44x_hwater--), /* slot for this TLB entry */
+	  "r" (entry),
 	  "i" (PPC44x_TLB_PAGEID),
 	  "i" (PPC44x_TLB_XLAT),
 	  "i" (PPC44x_TLB_ATTRIB));
@@ -58,6 +83,8 @@ static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys)
 
 void __init MMU_init_hw(void)
 {
+	ppc44x_update_tlb_hwater();
+
 	flush_instruction_cache();
 }
 

arch/powerpc/mm/fault.c

@@ -306,7 +306,8 @@ good_area:
 					flush_dcache_icache_page(page);
 					set_bit(PG_arch_1, &page->flags);
 				}
-				pte_update(ptep, 0, _PAGE_HWEXEC);
+				pte_update(ptep, 0, _PAGE_HWEXEC |
+					   _PAGE_ACCESSED);
 				_tlbie(address, mm->context.id);
 				pte_unmap_unlock(ptep, ptl);
 				up_read(&mm->mmap_sem);

arch/powerpc/mm/init_32.c

@@ -57,8 +57,8 @@
 
 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 
-unsigned long total_memory;
+phys_addr_t total_memory;
-unsigned long total_lowmem;
+phys_addr_t total_lowmem;
 
 phys_addr_t memstart_addr = (phys_addr_t)~0ull;
 EXPORT_SYMBOL(memstart_addr);

arch/powerpc/mm/mem.c

@@ -330,7 +330,7 @@ static int __init mark_nonram_nosave(void)
 void __init paging_init(void)
 {
 	unsigned long total_ram = lmb_phys_mem_size();
-	unsigned long top_of_ram = lmb_end_of_DRAM();
+	phys_addr_t top_of_ram = lmb_end_of_DRAM();
 	unsigned long max_zone_pfns[MAX_NR_ZONES];
 
 #ifdef CONFIG_PPC32
@@ -349,10 +349,10 @@ void __init paging_init(void)
 	kmap_prot = PAGE_KERNEL;
 #endif /* CONFIG_HIGHMEM */
 
-	printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
+	printk(KERN_DEBUG "Top of RAM: 0x%llx, Total RAM: 0x%lx\n",
-	       top_of_ram, total_ram);
+	       (u64)top_of_ram, total_ram);
 	printk(KERN_DEBUG "Memory hole size: %ldMB\n",
-	       (top_of_ram - total_ram) >> 20);
+	       (long int)((top_of_ram - total_ram) >> 20));
 	memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
 #ifdef CONFIG_HIGHMEM
 	max_zone_pfns[ZONE_DMA] = lowmem_end_addr >> PAGE_SHIFT;

arch/powerpc/mm/mmu_decl.h

@@ -49,8 +49,8 @@ extern unsigned int num_tlbcam_entries;
 extern unsigned long ioremap_bot;
 extern unsigned long __max_low_memory;
 extern phys_addr_t __initial_memory_limit_addr;
-extern unsigned long total_memory;
+extern phys_addr_t total_memory;
-extern unsigned long total_lowmem;
+extern phys_addr_t total_lowmem;
 extern phys_addr_t memstart_addr;
 extern phys_addr_t lowmem_end_addr;
 

arch/powerpc/platforms/44x/Kconfig

@@ -111,6 +111,22 @@ config YOSEMITE
 #	help
 #	  This option enables support for the IBM PPC440GX evaluation board.
 
+config XILINX_VIRTEX440_GENERIC_BOARD
+	bool "Generic Xilinx Virtex 440 board"
+	depends on 44x
+	default n
+	select XILINX_VIRTEX_5_FXT
+	help
+	  This option enables generic support for Xilinx Virtex based boards
+	  that use a 440 based processor in the Virtex 5 FXT FPGA architecture.
+
+	  The generic virtex board support matches any device tree which
+	  specifies 'xlnx,virtex440' in its compatible field.  This includes
+	  the Xilinx ML5xx reference designs using the powerpc core.
+
+	  Most Virtex 5 designs should use this unless it needs to do some
+	  special configuration at board probe time.
+
 # 44x specific CPU modules, selected based on the board above.
 config 440EP
 	bool
@@ -161,3 +177,13 @@ config 460EX
 # 44x errata/workaround config symbols, selected by the CPU models above
 config IBM440EP_ERR42
 	bool
+
+# Xilinx specific config options.
+config XILINX_VIRTEX
+	bool
+
+# Xilinx Virtex 5 FXT FPGA architecture, selected by a Xilinx board above
+config XILINX_VIRTEX_5_FXT
+	bool
+	select XILINX_VIRTEX
+

arch/powerpc/platforms/44x/Makefile

@@ -10,3 +10,4 @@ obj-$(CONFIG_RAINIER)	+= rainier.o
 obj-$(CONFIG_WARP)	+= warp.o
 obj-$(CONFIG_WARP)	+= warp-nand.o
 obj-$(CONFIG_CANYONLANDS) += canyonlands.o
+obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o

arch/powerpc/platforms/44x/virtex.c

@@ -0,0 +1,60 @@
+/*
+ * Xilinx Virtex 5FXT based board support, derived from
+ * the Xilinx Virtex (IIpro & 4FX) based board support
+ *
+ * Copyright 2007 Secret Lab Technologies Ltd.
+ * Copyright 2008 Xilinx, 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 <linux/init.h>
+#include <linux/of_platform.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/xilinx_intc.h>
+#include <asm/reg.h>
+#include <asm/ppc4xx.h>
+#include "44x.h"
+
+static struct of_device_id xilinx_of_bus_ids[] __initdata = {
+	{ .compatible = "simple-bus", },
+	{ .compatible = "xlnx,plb-v46-1.00.a", },
+	{ .compatible = "xlnx,plb-v46-1.02.a", },
+	{ .compatible = "xlnx,plb-v34-1.01.a", },
+	{ .compatible = "xlnx,plb-v34-1.02.a", },
+	{ .compatible = "xlnx,opb-v20-1.10.c", },
+	{ .compatible = "xlnx,dcr-v29-1.00.a", },
+	{ .compatible = "xlnx,compound", },
+	{}
+};
+
+static int __init virtex_device_probe(void)
+{
+	of_platform_bus_probe(NULL, xilinx_of_bus_ids, NULL);
+
+	return 0;
+}
+machine_device_initcall(virtex, virtex_device_probe);
+
+static int __init virtex_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "xlnx,virtex440"))
+		return 0;
+
+	return 1;
+}
+
+define_machine(virtex) {
+	.name			= "Xilinx Virtex440",
+	.probe			= virtex_probe,
+	.init_IRQ		= xilinx_intc_init_tree,
+	.get_irq		= xilinx_intc_get_irq,
+	.calibrate_decr		= generic_calibrate_decr,
+	.restart		= ppc4xx_reset_system,
+};

arch/powerpc/platforms/44x/warp-nand.c

@@ -113,9 +113,14 @@ static int warp_setup_nand_flash(void)
 		pp = of_find_property(np, "reg", NULL);
 		if (pp && (pp->length == 12)) {
 			u32 *v = pp->value;
-			if (v[2] == 0x4000000)
+			if (v[2] == 0x4000000) {
 				/* Rev A = 64M NAND */
-				warp_nand_chip0.nr_partitions = 2;
+				warp_nand_chip0.nr_partitions = 3;
+
+				nand_parts[1].size   = 0x3000000;
+				nand_parts[2].offset = 0x3200000;
+				nand_parts[2].size   = 0x0e00000;
+			}
 		}
 		of_node_put(np);
 	}

include/asm-powerpc/pgtable-ppc32.h

@@ -182,6 +182,9 @@ extern int icache_44x_need_flush;
 #define _PMD_SIZE_16M	0x0e0
 #define PMD_PAGE_SIZE(pmdval)	(1024 << (((pmdval) & _PMD_SIZE) >> 4))
 
+/* Until my rework is finished, 40x still needs atomic PTE updates */
+#define PTE_ATOMIC_UPDATES	1
+
 #elif defined(CONFIG_44x)
 /*
  * Definitions for PPC440
@@ -255,13 +258,13 @@ extern int icache_44x_need_flush;
 #define _PAGE_PRESENT	0x00000001		/* S: PTE valid */
 #define _PAGE_RW	0x00000002		/* S: Write permission */
 #define _PAGE_FILE	0x00000004		/* S: nonlinear file mapping */
+#define _PAGE_HWEXEC	0x00000004		/* H: Execute permission */
 #define _PAGE_ACCESSED	0x00000008		/* S: Page referenced */
-#define _PAGE_HWWRITE	0x00000010		/* H: Dirty & RW */
+#define _PAGE_DIRTY	0x00000010		/* S: Page dirty */
-#define _PAGE_HWEXEC	0x00000020		/* H: Execute permission */
 #define _PAGE_USER	0x00000040		/* S: User page */
 #define _PAGE_ENDIAN	0x00000080		/* H: E bit */
 #define _PAGE_GUARDED	0x00000100		/* H: G bit */
-#define	_PAGE_DIRTY	0x00000200		/* S: Page dirty */
+#define _PAGE_COHERENT	0x00000200		/* H: M bit */
 #define _PAGE_NO_CACHE	0x00000400		/* H: I bit */
 #define _PAGE_WRITETHRU	0x00000800		/* H: W bit */
 
@@ -273,6 +276,7 @@ extern int icache_44x_need_flush;
 /* ERPN in a PTE never gets cleared, ignore it */
 #define _PTE_NONE_MASK	0xffffffff00000000ULL
 
+
 #elif defined(CONFIG_FSL_BOOKE)
 /*
    MMU Assist Register 3:
@@ -315,6 +319,9 @@ extern int icache_44x_need_flush;
 #define _PMD_PRESENT_MASK (PAGE_MASK)
 #define _PMD_BAD	(~PAGE_MASK)
 
+/* Until my rework is finished, FSL BookE still needs atomic PTE updates */
+#define PTE_ATOMIC_UPDATES	1
+
 #elif defined(CONFIG_8xx)
 /* Definitions for 8xx embedded chips. */
 #define _PAGE_PRESENT	0x0001	/* Page is valid */
@@ -345,6 +352,9 @@ extern int icache_44x_need_flush;
 
 #define _PTE_NONE_MASK _PAGE_ACCESSED
 
+/* Until my rework is finished, 8xx still needs atomic PTE updates */
+#define PTE_ATOMIC_UPDATES	1
+
 #else /* CONFIG_6xx */
 /* Definitions for 60x, 740/750, etc. */
 #define _PAGE_PRESENT	0x001	/* software: pte contains a translation */
@@ -365,6 +375,10 @@ extern int icache_44x_need_flush;
 #define _PMD_PRESENT	0
 #define _PMD_PRESENT_MASK (PAGE_MASK)
 #define _PMD_BAD	(~PAGE_MASK)
+
+/* Hash table based platforms need atomic updates of the linux PTE */
+#define PTE_ATOMIC_UPDATES	1
+
 #endif
 
 /*
@@ -557,9 +571,11 @@ extern void add_hash_page(unsigned context, unsigned long va,
  * low PTE word since we expect ALL flag bits to be there
  */
 #ifndef CONFIG_PTE_64BIT
-static inline unsigned long pte_update(pte_t *p, unsigned long clr,
+static inline unsigned long pte_update(pte_t *p,
+				       unsigned long clr,
 				       unsigned long set)
 {
+#ifdef PTE_ATOMIC_UPDATES
 	unsigned long old, tmp;
 
 	__asm__ __volatile__("\
@@ -572,16 +588,26 @@ static inline unsigned long pte_update(pte_t *p, unsigned long clr,
 	: "=&r" (old), "=&r" (tmp), "=m" (*p)
 	: "r" (p), "r" (clr), "r" (set), "m" (*p)
 	: "cc" );
+#else /* PTE_ATOMIC_UPDATES */
+	unsigned long old = pte_val(*p);
+	*p = __pte((old & ~clr) | set);
+#endif /* !PTE_ATOMIC_UPDATES */
+
 #ifdef CONFIG_44x
 	if ((old & _PAGE_USER) && (old & _PAGE_HWEXEC))
 		icache_44x_need_flush = 1;
 #endif
 	return old;
 }
-#else
+#else /* CONFIG_PTE_64BIT */
-static inline unsigned long long pte_update(pte_t *p, unsigned long clr,
+/* TODO: Change that to only modify the low word and move set_pte_at()
+ * out of line
+ */
+static inline unsigned long long pte_update(pte_t *p,
+					    unsigned long clr,
 					    unsigned long set)
 {
+#ifdef PTE_ATOMIC_UPDATES
 	unsigned long long old;
 	unsigned long tmp;
 
@@ -596,13 +622,18 @@ static inline unsigned long long pte_update(pte_t *p, unsigned long clr,
 	: "=&r" (old), "=&r" (tmp), "=m" (*p)
 	: "r" (p), "r" ((unsigned long)(p) + 4), "r" (clr), "r" (set), "m" (*p)
 	: "cc" );
+#else /* PTE_ATOMIC_UPDATES */
+	unsigned long long old = pte_val(*p);
+	*p = __pte((old & ~clr) | set);
+#endif /* !PTE_ATOMIC_UPDATES */
+
 #ifdef CONFIG_44x
 	if ((old & _PAGE_USER) && (old & _PAGE_HWEXEC))
 		icache_44x_need_flush = 1;
 #endif
 	return old;
 }
-#endif
+#endif /* CONFIG_PTE_64BIT */
 
 /*
  * set_pte stores a linux PTE into the linux page table.