imx6: add new target

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36753 3c298f89-4303-0410-b956-a3cf2f4a3e73

7 files changed, 510 insertions, 0 deletions

diff --git a/target/linux/imx6/Makefile b/target/linux/imx6/Makefile
new file mode 100644
index 0000000000..e866c0bb9b
--- /dev/null
+++ b/target/linux/imx6/Makefile
@@ -0,0 +1,24 @@
+#
+# Copyright (C) 2013 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+
+ARCH:=arm
+BOARD:=imx6
+BOARDNAME:=Freescale i.MX 6 Series
+FEATURES:=audio display gpio pcie usb usbgadget squashfs targz
+CFLAGS:=-Os -pipe -mtune=cortex-a9 -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp
+MAINTAINER:=Luka Perkov <luka@openwrt.org>
+
+LINUX_VERSION:=3.10-rc3
+
+include $(INCLUDE_DIR)/target.mk
+
+KERNELNAME:="zImage dtbs"
+
+DEFAULT_PACKAGES +=
+
+$(eval $(call BuildTarget))
diff --git a/target/linux/imx6/base-files.mk b/target/linux/imx6/base-files.mk
new file mode 100644
index 0000000000..fdd2c714b2
--- /dev/null
+++ b/target/linux/imx6/base-files.mk
@@ -0,0 +1,3 @@
+define Package/base-files/install-target
+	rm -f $(1)/etc/config/network
+endef
diff --git a/target/linux/imx6/base-files/etc/inittab b/target/linux/imx6/base-files/etc/inittab
new file mode 100644
index 0000000000..16521ca4cf
--- /dev/null
+++ b/target/linux/imx6/base-files/etc/inittab
@@ -0,0 +1,3 @@
+::sysinit:/etc/init.d/rcS S boot
+::shutdown:/etc/init.d/rcS K shutdown
+ttymxc0::askfirst:/bin/ash --login
diff --git a/target/linux/imx6/base-files/etc/uci-defaults/02_network b/target/linux/imx6/base-files/etc/uci-defaults/02_network
new file mode 100644
index 0000000000..74cff8028e
--- /dev/null
+++ b/target/linux/imx6/base-files/etc/uci-defaults/02_network
@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# Copyright (C) 2013 OpenWrt.org
+#
+
+[ -e /etc/config/network ] && exit 0
+
+. /lib/functions/uci-defaults.sh
+
+touch /etc/config/network
+
+ucidef_set_interface_loopback
+
+board=$(cat /proc/device-tree/model)
+
+case "$board" in
+"Wandboard i.MX6 Dual Lite Board")
+	ucidef_set_interface_wan 'eth0'
+	;;
+
+esac
+
+uci commit network
+
+exit 0
diff --git a/target/linux/imx6/config-3.10 b/target/linux/imx6/config-3.10
new file mode 100644
index 0000000000..7cca740659
--- /dev/null
+++ b/target/linux/imx6/config-3.10
@@ -0,0 +1,284 @@
+CONFIG_ALIGNMENT_TRAP=y
+# CONFIG_ARCH_BCM is not set
+CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
+CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
+CONFIG_ARCH_HAS_CPUFREQ=y
+CONFIG_ARCH_HAS_OPP=y
+CONFIG_ARCH_HAS_RESET_CONTROLLER=y
+CONFIG_ARCH_HAS_TICK_BROADCAST=y
+CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
+CONFIG_ARCH_MULTIPLATFORM=y
+# CONFIG_ARCH_MULTI_CPU_AUTO is not set
+# CONFIG_ARCH_MULTI_V6 is not set
+CONFIG_ARCH_MULTI_V6_V7=y
+CONFIG_ARCH_MULTI_V7=y
+CONFIG_ARCH_MXC=y
+# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
+CONFIG_ARCH_NR_GPIO=0
+# CONFIG_ARCH_OMAP2PLUS is not set
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
+# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
+# CONFIG_ARCH_SUNXI is not set
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+# CONFIG_ARCH_VIRT is not set
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+# CONFIG_ARCH_WM8850 is not set
+CONFIG_ARM=y
+# CONFIG_ARM_APPENDED_DTB is not set
+# CONFIG_ARM_CPU_SUSPEND is not set
+# CONFIG_ARM_ERRATA_430973 is not set
+# CONFIG_ARM_ERRATA_720789 is not set
+CONFIG_ARM_ERRATA_754322=y
+# CONFIG_ARM_ERRATA_754327 is not set
+CONFIG_ARM_ERRATA_764369=y
+CONFIG_ARM_ERRATA_775420=y
+# CONFIG_ARM_ERRATA_798181 is not set
+CONFIG_ARM_GIC=y
+CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_L1_CACHE_SHIFT_6=y
+# CONFIG_ARM_LPAE is not set
+CONFIG_ARM_NR_BANKS=8
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_THUMB=y
+# CONFIG_ARM_THUMBEE is not set
+CONFIG_ARM_VIRT_EXT=y
+CONFIG_ATAGS=y
+CONFIG_AUTO_ZRELADDR=y
+# CONFIG_CACHE_L2X0 is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLKSRC_OF=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_COMMON_CLK=y
+CONFIG_CPU_32v6K=y
+CONFIG_CPU_32v7=y
+CONFIG_CPU_ABRT_EV7=y
+# CONFIG_CPU_BPREDICT_DISABLE is not set
+CONFIG_CPU_CACHE_V7=y
+CONFIG_CPU_CACHE_VIPT=y
+CONFIG_CPU_COPY_V6=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+CONFIG_CPU_HAS_ASID=y
+# CONFIG_CPU_ICACHE_DISABLE is not set
+CONFIG_CPU_PABRT_V7=y
+CONFIG_CPU_RMAP=y
+CONFIG_CPU_TLB_V7=y
+CONFIG_CPU_V7=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_IMX_UART_PORT=1
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+# CONFIG_DEBUG_PINCTRL is not set
+# CONFIG_DEBUG_USER is not set
+CONFIG_DECOMPRESS_BZIP2=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_DECOMPRESS_LZO=y
+CONFIG_DECOMPRESS_XZ=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DTC=y
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+CONFIG_EXT2_FS_SECURITY=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT3_FS=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_EXT3_FS_SECURITY=y
+CONFIG_EXT3_FS_XATTR=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_FEC=y
+CONFIG_FRAME_POINTER=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IO=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_DEVRES=y
+CONFIG_GPIO_GENERIC=y
+# CONFIG_GPIO_GRGPIO is not set
+CONFIG_GPIO_MXC=y
+# CONFIG_GPIO_RCAR is not set
+# CONFIG_HAMRADIO is not set
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
+CONFIG_HAVE_AOUT=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_PFN_VALID=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_ARM_SCU=y
+CONFIG_HAVE_ARM_TWD=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_HAVE_BPF_JIT=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_CLK_PREPARE=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_GENERIC_HARDIRQS=y
+CONFIG_HAVE_IMX_ANATOP=y
+CONFIG_HAVE_IMX_GPC=y
+CONFIG_HAVE_IMX_MMDC=y
+CONFIG_HAVE_IMX_SRC=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_HAVE_KERNEL_LZO=y
+CONFIG_HAVE_KERNEL_XZ=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_PROC_CPU=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_SMP=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_UID16=y
+# CONFIG_IMX2_WDT is not set
+# CONFIG_IMX_DMA is not set
+# CONFIG_IMX_SDMA is not set
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+# CONFIG_IRQ_TIME_ACCOUNTING is not set
+CONFIG_IRQ_WORK=y
+CONFIG_JBD=y
+CONFIG_JBD2=y
+CONFIG_KTIME_SCALAR=y
+CONFIG_LOCAL_TIMERS=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+# CONFIG_MACH_EUKREA_CPUIMX51SD is not set
+# CONFIG_MACH_IMX51_DT is not set
+# CONFIG_MACH_MX51_BABBAGE is not set
+# CONFIG_MCPM is not set
+CONFIG_MDIO_BOARDINFO=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK=y
+# CONFIG_MMC_MXC is not set
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_ESDHC_IMX=y
+CONFIG_MMC_SDHCI_IO_ACCESSORS=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MODULES_USE_ELF_REL=y
+# CONFIG_MPCORE_WATCHDOG is not set
+CONFIG_MTD_OF_PARTS=y
+# CONFIG_MTD_PHYSMAP_OF is not set
+CONFIG_MULTI_IRQ_HANDLER=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_MX3_IPU=y
+CONFIG_MX3_IPU_IRQS=4
+# CONFIG_MXC_DEBUG_BOARD is not set
+# CONFIG_MXC_IRQ_PRIOR is not set
+# CONFIG_MXS_DMA is not set
+CONFIG_NEED_DMA_MAP_STATE=y
+# CONFIG_NET_DMA is not set
+# CONFIG_NET_IP_TUNNEL is not set
+CONFIG_NLS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_DEVICE=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_MTD=y
+CONFIG_OF_NET=y
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_PAGE_OFFSET=0xC0000000
+# CONFIG_PCI_SYSCALL is not set
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PHYLIB=y
+CONFIG_PINCONF=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX=y
+CONFIG_PINCTRL_IMX6Q=y
+# CONFIG_PINCTRL_SINGLE is not set
+CONFIG_PINMUX=y
+# CONFIG_PM_OPP is not set
+CONFIG_PPS=y
+# CONFIG_PREEMPT_RCU is not set
+CONFIG_PROC_DEVICETREE=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_RATIONAL=y
+CONFIG_RCU_STALL_COMMON=y
+# CONFIG_RCU_USER_QS is not set
+CONFIG_RD_BZIP2=y
+CONFIG_RD_GZIP=y
+CONFIG_RD_LZO=y
+CONFIG_RD_XZ=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+CONFIG_SCHED_HRTICK=y
+# CONFIG_SCSI_DMA is not set
+CONFIG_SERIAL_IMX=y
+CONFIG_SERIAL_IMX_CONSOLE=y
+CONFIG_SMP=y
+CONFIG_SMP_ON_UP=y
+# CONFIG_SOC_IMX53 is not set
+CONFIG_SOC_IMX6Q=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_STOP_MACHINE=y
+# CONFIG_SWP_EMULATE is not set
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+# CONFIG_TEGRA_HOST1X is not set
+# CONFIG_THUMB2_KERNEL is not set
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TREE_RCU=y
+CONFIG_UID16=y
+CONFIG_UIDGID_CONVERTED=y
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+# CONFIG_USB_ARCH_HAS_OHCI is not set
+# CONFIG_USB_ARCH_HAS_XHCI is not set
+CONFIG_USE_GENERIC_SMP_HELPERS=y
+CONFIG_USE_OF=y
+CONFIG_VECTORS_BASE=0xffff0000
+# CONFIG_VFP is not set
+# CONFIG_XEN is not set
+CONFIG_XPS=y
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZONE_DMA_FLAG=0
diff --git a/target/linux/imx6/files-3.10/scripts/mkits.sh b/target/linux/imx6/files-3.10/scripts/mkits.sh
new file mode 100644
index 0000000000..3b02b6950a
--- /dev/null
+++ b/target/linux/imx6/files-3.10/scripts/mkits.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+#
+# Licensed under the terms of the GNU GPL License version 2 or later.
+#
+# Author: Peter Tyser <ptyser@xes-inc.com>
+#
+# U-Boot firmware supports the booting of images in the Flattened Image
+# Tree (FIT) format.  The FIT format uses a device tree structure to
+# describe a kernel image, device tree blob, ramdisk, etc.  This script
+# creates an Image Tree Source (.its file) which can be passed to the
+# 'mkimage' utility to generate an Image Tree Blob (.itb file).  The .itb
+# file can then be booted by U-Boot (or other bootloaders which support
+# FIT images).  See doc/uImage.FIT/howto.txt in U-Boot source code for
+# additional information on FIT images.
+#
+
+usage() {
+	echo "Usage: `basename $0` -A arch -C comp -a addr -e entry" \
+		"-v version -k kernel [-d dtb] -o its_file"
+	echo -e "\t-A ==> set architecture to 'arch'"
+	echo -e "\t-C ==> set compression type 'comp'"
+	echo -e "\t-a ==> set load address to 'addr' (hex)"
+	echo -e "\t-e ==> set entry point to 'entry' (hex)"
+	echo -e "\t-v ==> set kernel version to 'version'"
+	echo -e "\t-k ==> include kernel image 'kernel'"
+	echo -e "\t-d ==> include Device Tree Blob 'dtb'"
+	echo -e "\t-o ==> create output file 'its_file'"
+	exit 1
+}
+
+while getopts ":A:C:a:d:e:k:o:v:" OPTION
+do
+	case $OPTION in
+		A ) ARCH=$OPTARG;;
+		C ) COMPRESS=$OPTARG;;
+		a ) LOAD_ADDR=$OPTARG;;
+		d ) DTB=$OPTARG;;
+		e ) ENTRY_ADDR=$OPTARG;;
+		k ) KERNEL=$OPTARG;;
+		o ) OUTPUT=$OPTARG;;
+		v ) VERSION=$OPTARG;;
+		* ) echo "Invalid option passed to '$0' (options:$@)"
+		usage;;
+	esac
+done
+
+# Make sure user entered all required parameters
+if [ -z "${ARCH}" ] || [ -z "${COMPRESS}" ] || [ -z "${LOAD_ADDR}" ] || \
+	[ -z "${ENTRY_ADDR}" ] || [ -z "${VERSION}" ] || [ -z "${KERNEL}" ] || \
+	[ -z "${OUTPUT}" ]; then
+	usage
+fi
+
+# Create a default, fully populated DTS file
+DATA="/dts-v1/;
+
+/ {
+	description = \"Linux kernel ${VERSION}\";
+	#address-cells = <1>;
+
+	images {
+		kernel@1 {
+			description = \"Linux Kernel ${VERSION}\";
+			data = /incbin/(\"${KERNEL}\");
+			type = \"kernel\";
+			arch = \"${ARCH}\";
+			os = \"linux\";
+			compression = \"${COMPRESS}\";
+			load = <${LOAD_ADDR}>;
+			entry = <${ENTRY_ADDR}>;
+			hash@1 {
+				algo = \"crc32\";
+			};
+			hash@2 {
+				algo = \"sha1\";
+			};
+		};
+
+		fdt@1 { /* start fdt */
+			description = \"Flattened Device Tree blob\";
+			data = /incbin/(\"${DTB}\");
+			type = \"flat_dt\";
+			arch = \"${ARCH}\";
+			compression = \"none\";
+			hash@1 {
+				algo = \"crc32\";
+			};
+			hash@2 {
+				algo = \"sha1\";
+			};
+		}; /* end fdt */
+	};
+
+	configurations {
+		default = \"config@1\";
+		config@1 {
+			description = \"Default Linux kernel\";
+			kernel = \"kernel@1\";
+			fdt = \"fdt@1\";
+		};
+	};
+};"
+
+# Conditionally strip fdt information out of tree
+if [ -z "${DTB}" ]; then
+	DATA=`echo "$DATA" | sed '/start fdt/,/end fdt/d'`
+	DATA=`echo "$DATA" | sed '/fdt/d'`
+fi
+
+# Write .its file to disk
+echo "$DATA" > ${OUTPUT}
diff --git a/target/linux/imx6/image/Makefile b/target/linux/imx6/image/Makefile
new file mode 100644
index 0000000000..6c647196c1
--- /dev/null
+++ b/target/linux/imx6/image/Makefile
@@ -0,0 +1,60 @@
+#
+# Copyright (C) 2013 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/image.mk
+
+BOARDS := \
+	imx6dl-wandboard
+
+# board-specific Flattened Image Tree
+define mkfit
+	/bin/sh $(LINUX_DIR)/scripts/mkits.sh -A arm -C none -a $(2) -e $(2) \
+		-v 'OpenWrt Linux-$(LINUX_VERSION)' \
+		-d $(LINUX_DIR)/arch/arm/boot/dts/$(1).dtb -k $(LINUX_DIR)/arch/arm/boot/zImage \
+		-o $(KDIR)/$(1)-uImage.its
+	mkimage -B $(LINUX_DIR)/scripts/dtc/dtc -f $(KDIR)/$(1)-uImage.its $(BIN_DIR)/openwrt-$(1)-uImage.itb
+endef
+
+# emit FIT images, DTB's and generic zImage
+define Image/BuildKernel
+	$(foreach board,$(BOARDS),
+		$(call mkfit,$(board),0x10008000)
+		cp $(LINUX_DIR)/arch/arm/boot/dts/$(board).dtb $(BIN_DIR)
+	)
+	cp $(LINUX_DIR)/arch/arm/boot/zImage $(BIN_DIR)/openwrt-$(BOARD)-zImage
+endef
+
+# board-specific sysupgrade image
+define BuildFirmware/Generic
+	dd if=$(BIN_DIR)/openwrt-$(1)-uImage.itb of=$(KDIR)/uImage.pad bs=64k conv=sync; \
+	dd if=$(KDIR)/root.$(2) of=$(KDIR)/root.$(2).pad bs=128k conv=sync; \
+	sh $(TOPDIR)/scripts/combined-image.sh \
+		$(KDIR)/uImage.pad \
+		$(KDIR)/root.$(2).pad \
+		$(BIN_DIR)/$(IMG_PREFIX)-$(patsubst jffs2-%,jffs2,$(patsubst squashfs-%,squashfs,$(1)))-sysupgrade.bin
+endef
+
+define Image/Build
+	$(call Image/Build/$(1),$(1))
+	$(foreach board,$(BOARDS),
+		$(call BuildFirmware/Generic,$(board),$(1))
+	)
+endef
+
+# rootfs and board-specific combined kernel+rootfs for convenience
+define Image/Build/squashfs
+	$(call prepare_generic_squashfs,$(KDIR)/root.$(1))
+	dd if=$(KDIR)/root.$(1) of=$(BIN_DIR)/openwrt-$(BOARD)-$(1).img bs=128k conv=sync
+	$(foreach board,$(BOARDS),
+		( \
+		dd if=$(BIN_DIR)/openwrt-$(board)-uImage.itb bs=2048k conv=sync; \
+		dd if=$(KDIR)/root.$(1) bs=64k conv=sync; \
+		) > $(BIN_DIR)/$(IMG_PREFIX)-$(board)-$(1).bin
+	)
+endef
+
+$(eval $(call BuildImage))