configs/olimex_a20_olinuxino_lime_mali_defconfig: new board

This commit adds a new defconfig for the Olimex A20 OLinuxino Lime
board, based on the 3.4.x vendor specific kernel, which allows to use
the Mali 3D acceleration for OpenGL support.

Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

board/olimex/a20_olinuxino_lime/boot-mali.cmd

@@ -0,0 +1,5 @@
+setenv bootm_boot_mode sec
+setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p1 rootwait panic=10 sunxi_ve_mem_reserve=0 sunxi_g2d_mem_reserve=0 sunxi_no_mali_mem_reserve sunxi_fb_mem_reserve=16 consoleblank=0 ${extra}
+ext4load mmc 0 0x43000000 /boot/script.bin
+ext4load mmc 0 0x48000000 /boot/zImage
+bootz 0x48000000

board/olimex/a20_olinuxino_lime/post-build.sh

@@ -6,3 +6,7 @@
 MKIMAGE=$HOST_DIR/usr/bin/mkimage
 
 $MKIMAGE -A arm -O linux -T script -C none -d $2 $3/boot.scr
+
+if [ -e $BINARIES_DIR/script.bin ]; then
+	cp $BINARIES_DIR/script.bin $3/script.bin
+fi

board/olimex/a20_olinuxino_lime/readme.txt

@@ -6,11 +6,24 @@ Intro
 This is a open hardware board,
 see https://www.olimex.com/Products/OLinuXino/open-source-hardware
 
+The legacy linux-sunxi kernels are based on the vendor code drops.
+It is only useful when accelerated 3D graphics and multimedia support
+is strictly necessary.
+
+The Mainline Kernel is already a much better choice for a headless server.
+And also the mainline kernel works fine even for a basic Linux desktop
+system running on top of a simple framebuffer, which may be good enough for
+the users who do not need fancy 3D graphics or video playback acceleration.
+
 How to build it
 ===============
 
     $ make olimex_a20_olinuxino_lime_defconfig
 
+or
+
+    $ make olimex_a20_olinuxino_lime_mali_defconfig
+
 Compile everything and build the rootfs image:
 
     $ make
@@ -23,7 +36,8 @@ After building, you should get a tree like this:
     output/images/
     +-- rootfs.ext2
     +-- rootfs.ext4 -> rootfs.ext2
-    +-- sun7i-a20-olinuxino-lime.dtb
+    +-- script.bin (mali)
+    +-- sun7i-a20-olinuxino-lime.dtb (mainline)
     +-- u-boot.bin
     +-- u-boot-sunxi-with-spl.bin
     `-- zImage

configs/olimex_a20_olinuxino_lime_mali_defconfig

@@ -0,0 +1,50 @@
+# Architecture
+BR2_arm=y
+BR2_cortex_a7=y
+BR2_ARM_EABIHF=y
+
+# Lock to 3.4 headers as the sunxi kernel is based off the 3.4 branch
+BR2_KERNEL_HEADERS_VERSION=y
+BR2_DEFAULT_KERNEL_VERSION="3.4.108"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_4=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-mali.cmd $(TARGET_DIR)/boot"
+
+# Kernel
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,linux-sunxi,linux-sunxi,sunxi-v3.4.103-r1)/sunxi-v3.4.103-r1.tar.gz"
+BR2_LINUX_KERNEL_USE_DEFCONFIG=y
+BR2_LINUX_KERNEL_DEFCONFIG="sun7i"
+BR2_LINUX_KERNEL_ZIMAGE=y
+BR2_LINUX_KERNEL_INSTALL_TARGET=y
+
+# sunxi packages
+BR2_PACKAGE_SUNXI_TOOLS=y
+BR2_PACKAGE_SUNXI_BOARDS=y
+BR2_PACKAGE_SUNXI_BOARDS_FEX_FILE="a20/a20-olinuxino_lime.fex"
+BR2_PACKAGE_SUNXI_MALI=y
+BR2_PACKAGE_SUNXI_MALI_DBG=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="2015.01"
+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