Merge from bittboy/buildroot@db180c0

board/lego/ev3/busybox.fragment

@@ -0,0 +1,3 @@
+CONFIG_BEEP=y
+CONFIG_FEATURE_BEEP_FREQ=440
+CONFIG_FEATURE_BEEP_LENGTH_MS=250

board/lego/ev3/genimage.cfg

@@ -0,0 +1,65 @@
+# LEGO MINDSTORMS EV3 can boot from a 16MB flash or from a microSD card.
+# The U-Boot bootloader from the flash is always used, even when booting
+# from a microSD card.
+
+# The Flash image
+
+flash nor-16M-256 {
+	pebsize = 4096
+	numpebs = 4096
+	minimum-io-unit-size = 256
+}
+
+image flash.bin {
+	flash {
+	}
+	flashtype = "nor-16M-256"
+	partition uboot {
+		image = "u-boot.bin"
+		size = 256K
+	}
+	partition dtb {
+		image = "da850-lego-ev3.dtb"
+		size = 64K
+		offset = 0x40000
+	}
+	partition uimage {
+		image = "uImage"
+		size = 4M
+		offset = 0x50000
+	}
+	partition rootfs {
+		image = "rootfs.squashfs"
+		size = 10M
+		offset = 0x450000
+	}
+}
+
+# The SD card image
+
+image boot.vfat {
+	vfat {
+		file uImage {
+			image = "uImage"
+		}
+		file da850-lego-ev3.dtb {
+			image = "da850-lego-ev3.dtb"
+		}
+	}
+	size = 16M
+}
+
+image sdcard.img {
+	hdimage {
+	}
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+		offset = 4M
+	}
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext2"
+	}
+}

board/lego/ev3/linux.fragment

@@ -0,0 +1,68 @@
+CONFIG_ARM_APPENDED_DTB=n
+CONFIG_ARCH_DAVINCI_DM644x=n
+CONFIG_ARCH_DAVINCI_DM355=n
+CONFIG_ARCH_DAVINCI_DM646x=n
+CONFIG_ARCH_DAVINCI_DA830=n
+CONFIG_ARCH_DAVINCI_DM365=n
+CONFIG_MACH_SFFSDR=n
+CONFIG_MACH_NEUROS_OSD2=n
+CONFIG_MACH_DM355_LEOPARD=n
+CONFIG_MACH_MITYOMAPL138=n
+CONFIG_MACH_OMAPL138_HAWKBOARD=n
+CONFIG_MACH_DAVINCI_DA850_EVM=n
+CONFIG_ATA=n
+CONFIG_MTD=y
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_M25P80=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_MTD_UBI=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
+CONFIG_BLK_DEV_RAM_SIZE=32768
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_PWM_BEEPER=y
+CONFIG_SPI_DAVINCI=y
+CONFIG_PINCTRL_DA850_PUPD=y
+CONFIG_V4L_PLATFORM_DRIVERS=n
+CONFIG_SOUND=n
+CONFIG_SND=n
+CONFIG_SND_SOC=n
+CONFIG_SND_EDMA_SOC=n
+CONFIG_SND_DAVINCI_SOC_MCASP=n
+CONFIG_SND_SOC_TLV320AIC3X=n
+CONFIG_SND_SIMPLE_CARD=n
+CONFIG_DAVINCI_WATCHDOG=y
+CONFIG_USB=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_HCD_DAVINCI=y
+CONFIG_USB_MUSB_HDRC=y
+CONFIG_USB_MUSB_GADGET=y
+CONFIG_USB_MUSB_DA8XX=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_USB_GADGET=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_MTD=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_RTC_DRV_OMAP=y
+CONFIG_IIO=y
+CONFIG_TI_ADS7950=y
+CONFIG_PWM_TIECAP=y
+CONFIG_PWM_TIEHRPWM=y
+CONFIG_SQUASHFS=y
+CONFIG_SQUASHFS_LZ4=y
+CONFIG_SQUASHFS_LZO=y
+CONFIG_SQUASHFS_XZ=y
+CONFIG_DRM=y
+CONFIG_DRM_TILCDC=n
+CONFIG_DRM_DUMB_VGA_DAC=n
+CONFIG_DRM_TINYDRM=y
+CONFIG_TINYDRM_ST7586=y
+CONFIG_FB_DA8XX=n
+CONFIG_COMMON_CLK_PWM=y
+CONFIG_BT=y
+CONFIG_BT_HS=n
+CONFIG_BT_LE=n
+CONFIG_RFKILL=y

board/lego/ev3/post-image.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+BOARD_DIR="$(dirname $0)"
+GENIMAGE_CFG="${BOARD_DIR}/genimage.cfg"
+GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
+
+rm -rf "${GENIMAGE_TMP}"
+
+genimage \
+  --rootpath "${TARGET_DIR}" \
+  --tmppath "${GENIMAGE_TMP}" \
+  --inputpath "${BINARIES_DIR}" \
+  --outputpath "${BINARIES_DIR}" \
+  --config "${GENIMAGE_CFG}"

board/lego/ev3/readme.txt

@@ -0,0 +1,99 @@
+Lego Mindstorms EV3
+
+Intro
+=====
+
+This is the buildroot basic board support for the Lego Mindstorms EV3
+programmable brick.
+
+The Lego Mindstorms EV3 brick comprises a Texas Instruments AM1808 SoC, with
+an ARM 926EJ-S main processor running at 300 MHz.
+See:
+- https://en.wikipedia.org/wiki/Lego_Mindstorms_EV3
+- http://www.lego.com/en-us/mindstorms/products/ev3/31313-mindstorms-ev3/
+- http://www.ti.com/product/am1808
+
+How it works
+============
+
+Boot process :
+--------------
+
+The EV3 boots from an EEPROM. This loads whatever is on the built-in 16MB flash
+(usually U-Boot) and runs it. The U-Boot from the official LEGO firmware and
+mainline U-Boot will attempt to boot a Linux kernel from the external µSD card.
+It will try to load a uImage (and optional boot.scr) from the first µSD card
+partition, which must be formatted with a FAT filesystem. If no µSD is found or
+it does not contain a uImage file, then the EV3 will boot the uImage from the
+built-in 16MB flash.
+
+How to build it
+===============
+
+Configure Buildroot
+-------------------
+
+The lego_ev3_defconfig configuration provides basic support to boot on the Lego
+Mindstorms EV3 programmable brick:
+
+  $ make lego_ev3_defconfig
+
+Build everything
+----------------
+
+Note: you will need to have access to the network, since Buildroot will
+download the packages' sources.
+
+  $ make
+
+Result of the build
+-------------------
+
+After building, you should obtain this tree:
+
+    output/images/
+    ├── boot.vfat
+    ├── flash.bin
+    ├── rootfs.ext2
+    ├── rootfs.ext3 -> rootfs.ext2
+    ├── rootfs.squashfs
+    ├── sdcard.img
+    ├── u-boot.bin
+    ├── uImage -> uImage.da850-lego-ev3
+    └── uImage.da850-lego-ev3
+
+Installation
+============
+
+You can use either flash.bin or the sdcard.img. To load flash.bin, use the
+official Lego Mindstorms EV3 programming software firmware update tool to load
+the image. To use sdcard.img, use a disk writing tool such as Etcher or dd to
+write the image to the µSD card.
+
+NOTE: The sdcard.img created by lego_ev3_defconfig won't boot if the official
+LEGO firmware is installed on the EV3 (it has an old version of U-Boot that
+doesn't know about device tree). You must either set the kernel configuration
+option to append the device tree to the kernel or you can create a boot.scr
+that chainloads a newer U-Boot or you can install a newer U-Boot in the flash
+memory (just flashing u-boot.bin is enough).
+
+Finish
+======
+
+To have a serial console, you will need a proper USB to Lego serial port
+adapter plugged into the EV3 sensors port 1.
+See:
+- http://botbench.com/blog/2013/08/15/ev3-creating-console-cable/
+- http://botbench.com/blog/2013/08/05/mindsensors-ev3-usb-console-adapter/
+
+The serial port config to use is 115200/8-N-1.
+
+Bluetooth
+=========
+
+To enable Bluetooth:
+
+    # modprobe hci_uart
+    # /usr/libexec/bluetooth/bluetoothd &
+    # bluetoothctl
+    [bluetooth]# power on