BR2_arm=y
BR2_arm926t=y
-# Linux headers same as kernel, a 3.1 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_1=y
-
-# Host utilities
-#
-BR2_PACKAGE_HOST_SAM_BA=y
-
-# First stage bootloader
-BR2_TARGET_AT91BOOTSTRAP=y
-BR2_TARGET_AT91BOOTSTRAP_BOARD="at91sam9g20ek"
-BR2_TARGET_AT91BOOTSTRAP_DATAFLASHCARD=y
-
-# Second stage bootloader
-BR2_TARGET_UBOOT=y
-BR2_TARGET_UBOOT_BOARDNAME="at91sam9g20ek_nandflash"
+# Linux headers same as kernel, a 4.8 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_8=y
# Kernel
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.1.6"
-BR2_LINUX_KERNEL_USE_DEFCONFIG=y
-BR2_LINUX_KERNEL_DEFCONFIG="at91sam9g20ek"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.8.6"
+BR2_LINUX_KERNEL_DEFCONFIG="at91_dt"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="at91sam9g20ek"
# Filesystem
BR2_TARGET_ROOTFS_TAR=y
+
+# Bootloaders
+BR2_TARGET_AT91BOOTSTRAP3=y
+BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_GIT=y
+BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_URL="https://github.com/linux4sam/at91bootstrap.git"
+BR2_TARGET_AT91BOOTSTRAP3_CUSTOM_REPO_VERSION="v3.8.7"
+BR2_TARGET_AT91BOOTSTRAP3_DEFCONFIG="at91sam9g20eknf_uboot"
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION=y
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2016.09.01"
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="at91sam9g20ek_nandflash"
+
+# Host packages
+BR2_PACKAGE_HOST_SAM_BA=y