board: Add nanopi-m1 Support

Add initial support for nanopi-m1 board
with below features
- U-Boot 2017.07-rc1
- Linux 4.11.5
- Default packages from buildroot

Signed-off-by: Chakra Divi <chakra@openedev.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

.gitlab-ci.yml

@@ -127,6 +127,7 @@ mx53loco_defconfig: *defconfig
 mx6cubox_defconfig: *defconfig
 mx6sx_udoo_neo_defconfig: *defconfig
 mx6udoo_defconfig: *defconfig
+nanopi_m1_defconfig: *defconfig
 nanopi_neo_defconfig: *defconfig
 nexbox_a95x_defconfig: *defconfig
 nitrogen6sx_defconfig: *defconfig

DEVELOPERS

@@ -344,8 +344,10 @@ F:	package/libsvg/
 F:	package/libsvg-cairo/
 
 N:	Chakra Divi <chakra@openedev.com>
+F:	board/friendlyarm/nanopi-m1
 F:	board/olimex/a13_olinuxino
 F:	board/orangepi/orangepi-plus
+F:	configs/nanopi_m1_defconfig
 F:	configs/olimex_a13_olinuxino_defconfig
 F:	configs/orangepi_plus_defconfig
 

board/friendlyarm/nanopi-m1/boot.cmd

@@ -0,0 +1,8 @@
+setenv fdt_high ffffffff
+
+setenv bootargs console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p2 rootwait
+
+fatload mmc 0 $kernel_addr_r zImage
+fatload mmc 0 $fdt_addr_r sun8i-h3-nanopi-m1.dtb
+
+bootz $kernel_addr_r - $fdt_addr_r

board/friendlyarm/nanopi-m1/genimage.cfg

@@ -0,0 +1,36 @@
+# Minimal SD card image for the NanoPi M1
+#
+image boot.vfat {
+	vfat {
+		files = {
+			"zImage",
+			"sun8i-h3-nanopi-m1.dtb",
+			"boot.scr"
+		}
+	}
+	size = 10M
+}
+
+image sdcard.img {
+	hdimage {
+	}
+
+	partition u-boot {
+		in-partition-table = "no"
+		image = "u-boot-sunxi-with-spl.bin"
+		offset = 8192
+		size = 1040384 # 1MB - 8192
+	}
+
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+		size = 512M
+	}
+}

board/friendlyarm/nanopi-m1/readme.txt

@@ -0,0 +1,29 @@
+NanoPi M1
+
+Intro
+=====
+
+This default configuration will allow you to start experimenting with the
+buildroot environment for the NanoPi M1. With the current configuration
+it will bring-up the board, and allow access through the serial console.
+
+How to build it
+===============
+
+Configure Buildroot:
+
+    $ make nanopi_m1_defconfig
+
+Compile everything and build the SD card image:
+
+    $ make
+
+How to write the SD card
+========================
+
+Once the build process is finished you will have an image called "sdcard.img"
+in the output/images/ directory.
+
+Copy the bootable "sdcard.img" onto an SD card with "dd":
+
+  $ sudo dd if=output/images/sdcard.img of=/dev/sdX

configs/nanopi_m1_defconfig

@@ -0,0 +1,43 @@
+# Architecture
+BR2_arm=y
+BR2_cortex_a7=y
+BR2_ARM_FPU_VFPV4=y
+
+# Linux headers same as kernel, a 4.11 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_11=y
+
+# System configuration
+BR2_TARGET_GENERIC_HOSTNAME="nanopi-m1"
+BR2_TARGET_GENERIC_ISSUE="Welcome to Buildroot for the NanoPi M1"
+
+# Bootloaders
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.07-rc1"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="nanopi_m1"
+BR2_TARGET_UBOOT_NEEDS_DTC=y
+BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
+BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot-sunxi-with-spl.bin"
+
+# Kernel
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.11.5"
+BR2_LINUX_KERNEL_DEFCONFIG="sunxi"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="sun8i-h3-nanopi-m1"
+
+# Filesystem
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_UBOOT_BOOT_SCRIPT=y
+BR2_TARGET_UBOOT_BOOT_SCRIPT_SOURCE="board/friendlyarm/nanopi-m1/boot.cmd"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/friendlyarm/nanopi-m1/genimage.cfg"
+# BR2_TARGET_ROOTFS_TAR is not set
+
+# Additional tools
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_MTOOLS=y