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1.基于现有设备，只修改设备名称，以DB120为例
- target\linux\ar71xx\image\generic-legacy-devices.mk中增加设备描述，这样在make menuconfig中就可以看到了。
define LegacyDevice/MY-DEVICE DEVICE_TITLE := My device DEVICE_PACKAGES := kmod-usb-core kmod-usb2 kmod-usb-storage endef LEGACY_DEVICES += MY-DEVICE - target/linux/ar71xx/image/legacy.mk中增加如下内容
my_device_mtdlayout=mtdparts=spi0.0:256k(u-boot)ro,64k(u-boot-env)ro,5120k(rootfs),2624k(kernel),64k(nvram),64k(art)ro,7744k@0x50000(firmware)$(eval $(call SingleProfile,AthLzma,64k,MY-DEVICE,my-device,DB120,ttyS0,115200,$$(my_device_mtdlayout),RKuImage)) -
make menuconfig选中新增设备，make即可