buildroot

# Architecture

BR2_arm=y

BR2_arm926t=y

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# 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

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# First stage bootloader

BR2_TARGET_AT91BOOTSTRAP=y

BR2_TARGET_AT91BOOTSTRAP_BOARD="at91sam9g20ek"

BR2_TARGET_AT91BOOTSTRAP_DATAFLASHCARD=y

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# Second stage bootloader

BR2_TARGET_UBOOT=y

BR2_TARGET_UBOOT_BOARDNAME="at91sam9g20ek_nandflash"

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# 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"

​

# Filesystem

BR2_TARGET_ROOTFS_TAR=y