The document provides information on how to build Android for various ARM chip boards including Allwinner A31, Rockchip RK3188, MediaTek MT6589, Freescale i.MX6Q, and TI OMAP5432. It lists the chips, development boards, and Android support for each. It then provides detailed setup instructions for building Android on the Rockchip RK3188 and MediaTek MT6589 boards, including getting the kernel source, building images, and writing to the devices. Setup for the Freescale board involves downloading official source and patching to the Android code.