configs/olimex_a20_olinuxino_lime: new board

setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p1 rootwait panic=10 ${extra}

ext4load mmc 0 0x49000000 /boot/${fdtfile}

ext4load mmc 0 0x46000000 /boot/zImage

env set fdt_high ffffffff

bootz 0x46000000 - 0x49000000

#!/bin/sh

# args from BR2_ROOTFS_POST_SCRIPT_ARGS

# $2    path of boot.cmd

# $3    output directory for boot.scr

MKIMAGE=$HOST_DIR/usr/bin/mkimage

$MKIMAGE -A arm -O linux -T script -C none -d $2 $3/boot.scr

A20-OLinuXino-LIME

Intro

=====

This is a open hardware board,

see https://www.olimex.com/Products/OLinuXino/open-source-hardware

How to build it

===============

    $ make olimex_a20_olinuxino_lime_defconfig

Compile everything and build the rootfs image:

    $ make

Result of the build

-------------------

After building, you should get a tree like this:

    output/images/

    +-- rootfs.ext2

    +-- rootfs.ext4 -> rootfs.ext2

    +-- sun7i-a20-olinuxino-lime.dtb

    +-- u-boot.bin

    +-- u-boot-sunxi-with-spl.bin

    `-- zImage

How to write the SD card

========================

Prepare the SD card

-------------------

Erase existing stuff, and create an unique Linux partition with `fdisk`.

    # fdisk /dev/sdX

    Command (m for help): o

    Building a new DOS disklabel with disk identifier 0xf9e1616a.

    Changes will remain in memory only, until you decide to write them.

    After that, of course, the previous content won't be recoverable.

    Command (m for help): n

    Partition type:

        p   primary (0 primary, 0 extended, 4 free)

        e   extended

    Select (default p): p

    Partition number (1-4, default 1): 1

    First sector (2048-7626751, default 2048): 2048

    Last sector, +sectors or +size{K,M,G} (2048-7626751, default 7626751): 

    Using default value 7626751

    Command (m for help): p

    Disk /dev/sdX: 3904 MB, 3904897024 bytes

    4 heads, 16 sectors/track, 119168 cylinders, total 7626752 sectors

    Units = sectors of 1 * 512 = 512 bytes

    Sector size (logical/physical): 512 bytes / 512 bytes

    I/O size (minimum/optimal): 512 bytes / 512 bytes

    Disk identifier: 0xf9e1616a

            Device Boot      Start         End      Blocks   Id  System

    /dev/sdX1                 2048     7626751     3812352   83  Linux

    Command (m for help): w

    The partition table has been altered!

    Calling ioctl() to re-read partition table.

    Syncing disks.

Copy images on the SD card

--------------------------

    # dd if=output/images/rootfs.ext2 of=/dev/sdX1

    # dd if=output/images/u-boot-sunxi-with-spl.bin of=/dev/sdX bs=1024 seek=8

Finish

======

Eject the SD card, insert it in the A20-OLinuXino-LIME board, and power it up.

# Architecture

BR2_arm=y

BR2_cortex_a7=y

BR2_ARM_EABIHF=y

# Lock to 4.0 headers to avoid breaking with newer kernels

BR2_KERNEL_HEADERS_VERSION=y

BR2_DEFAULT_KERNEL_VERSION="4.0.5"

BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_0=y

# System configuration

BR2_TARGET_GENERIC_HOSTNAME="a20-olinuxino"

BR2_TARGET_GENERIC_ISSUE="Welcome to OLinuXino!"

BR2_TARGET_GENERIC_GETTY=y

BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"

BR2_ROOTFS_POST_BUILD_SCRIPT="board/olimex/a20_olinuxino_lime/post-build.sh"

BR2_ROOTFS_POST_SCRIPT_ARGS="board/olimex/a20_olinuxino_lime/boot.cmd $(TARGET_DIR)/boot"

# Kernel

BR2_LINUX_KERNEL=y

BR2_LINUX_KERNEL_CUSTOM_VERSION=y

BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.0.5"

BR2_LINUX_KERNEL_USE_DEFCONFIG=y

BR2_LINUX_KERNEL_DEFCONFIG="sunxi"

BR2_LINUX_KERNEL_ZIMAGE=y

BR2_LINUX_KERNEL_DTS_SUPPORT=y

BR2_LINUX_KERNEL_INTREE_DTS_NAME="sun7i-a20-olinuxino-lime"

BR2_LINUX_KERNEL_INSTALL_TARGET=y

# Filesystem

BR2_TARGET_ROOTFS_EXT2=y

BR2_TARGET_ROOTFS_EXT2_4=y

# BR2_TARGET_ROOTFS_TAR is not set

# Bootloaders

BR2_TARGET_UBOOT=y

BR2_TARGET_UBOOT_BOARDNAME="A20-OLinuXino-Lime"

BR2_TARGET_UBOOT_CUSTOM_VERSION=y

BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2015.04"

BR2_TARGET_UBOOT_FORMAT_BIN=y

BR2_TARGET_UBOOT_SPL=y

BR2_TARGET_UBOOT_SPL_NAME="u-boot-sunxi-with-spl.bin"

# Additional tools

BR2_PACKAGE_HOST_UBOOT_TOOLS=y