[Buildroot] [PATCH v4 7/7] beaglebone: adds barebox bootloader defconfig

[Pieter Smith]

* Builds the barebox MLO and bootloader.
* Generates a barebox environment that boots from eMMC by default.
* Barebox integrates a perfectly good device-tree for the bbb, so no dtb is
  being generated with the kernel.

Signed-off-by: Pieter Smith <pieter at boesman.nl>
---
 board/beaglebone/barebox.env/boot/sd      |  6 +++++
 board/beaglebone/barebox.env/config-board |  4 +++
 configs/beaglebone_barebox_defconfig      | 41 +++++++++++++++++++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 board/beaglebone/barebox.env/boot/sd
 create mode 100644 board/beaglebone/barebox.env/config-board
 create mode 100644 configs/beaglebone_barebox_defconfig

diff --git a/board/beaglebone/barebox.env/boot/sd b/board/beaglebone/barebox.env/boot/sd
new file mode 100644
index 0000000..7a80e29
--- /dev/null
+++ b/board/beaglebone/barebox.env/boot/sd
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+global.bootm.image=/boot/zImage
+#global.bootm.oftree=/boot/oftree
+#global.bootm.initrd=<path to initrd>
+global.linux.bootargs.dyn.root="root=/dev/mmcblk0p2 rootfstype=ext2 rootwait"
diff --git a/board/beaglebone/barebox.env/config-board b/board/beaglebone/barebox.env/config-board
new file mode 100644
index 0000000..cd7b26d
--- /dev/null
+++ b/board/beaglebone/barebox.env/config-board
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+global.boot.default=sd
+
diff --git a/configs/beaglebone_barebox_defconfig b/configs/beaglebone_barebox_defconfig
new file mode 100644
index 0000000..6324dbf
--- /dev/null
+++ b/configs/beaglebone_barebox_defconfig
@@ -0,0 +1,41 @@
+# architecture
+BR2_arm=y
+BR2_cortex_a8=y
+BR2_ARM_EABIHF=y
+
+# system
+BR2_TARGET_GENERIC_HOSTNAME="beaglebone"
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
+BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
+# BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
+# BR2_ROOTFS_POST_IMAGE_SCRIPT is not set
+
+# filesystem
+BR2_PACKAGE_AM33X_CM3=y
+BR2_TARGET_ROOTFS_EXT2=y
+# BR2_TARGET_ROOTFS_TAR is not set
+
+# Linux headers same as kernel, a 4.4 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y
+
+# bootloader
+BR2_TARGET_BAREBOX=y
+BR2_TARGET_BAREBOX_BOARD_DEFCONFIG="am335x"
+BR2_TARGET_BAREBOX_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone.img"
+BR2_TARGET_BAREBOX_CUSTOM_ENV=y
+BR2_TARGET_BAREBOX_CUSTOM_ENV_PATH="board/beaglebone/barebox.env"
+BR2_TARGET_BAREBOX_2=y
+BR2_TARGET_BAREBOX_2_BOARD_DEFCONFIG="am335x_mlo"
+BR2_TARGET_BAREBOX_2_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone-mlo.img"
+BR2_TARGET_BAREBOX_2_OUTPUT_IMAGE_FILE="MLO"
+
+# kernel
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.4.6"
+BR2_LINUX_KERNEL_USE_DEFCONFIG=y
+BR2_LINUX_KERNEL_DEFCONFIG="omap2plus"
+BR2_LINUX_KERNEL_ZIMAGE=y
+
+# Use the barebox built-in dtb
+# BR2_LINUX_KERNEL_DTS_SUPPORT is not set
-- 
2.5.0