1*4882a593SmuzhiyunA20-OLinuXino-LIME and A20-OLinuXino-MICRO 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunIntro 4*4882a593Smuzhiyun===== 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunThese are open hardware boards, all based on the Allwinner A20 SoC. 7*4882a593Smuzhiyun 8*4882a593Smuzhiyunfor more details about the boards see the following pages: 9*4882a593Smuzhiyun - https://www.olimex.com/Products/OLinuXino/open-source-hardware 10*4882a593Smuzhiyun - https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-MICRO/ 11*4882a593Smuzhiyun - https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-LIME/ 12*4882a593Smuzhiyun - https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-LIME2/ 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunThe following defconfigs are available: 15*4882a593Smuzhiyun - olimex_a20_olinuxino_micro_defconfig 16*4882a593Smuzhiyun for the A20-OLinuXino-MICRO board using mainline kernel 17*4882a593Smuzhiyun - olimex_a20_olinuxino_lime_defconfig 18*4882a593Smuzhiyun for the A20-OLinuXino-LIME board using mainline kernel 19*4882a593Smuzhiyun - olimex_a20_olinuxino_lime2_defconfig 20*4882a593Smuzhiyun for the A20-OLinuXino-LIME2 board using mainline kernel 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunThe Mainline Kernel is already a much better choice for a headless server. 23*4882a593SmuzhiyunAnd also the mainline kernel works fine even for a basic Linux desktop 24*4882a593Smuzhiyunsystem running on top of a simple framebuffer, which may be good enough for 25*4882a593Smuzhiyunthe users who do not need fancy 3D graphics or video playback acceleration. 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun(see http://linux-sunxi.org/Linux_Kernel for more details) 28*4882a593Smuzhiyun 29*4882a593SmuzhiyunHow to build it 30*4882a593Smuzhiyun=============== 31*4882a593Smuzhiyun 32*4882a593SmuzhiyunConfigure Buildroot: 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun $ make <board>_defconfig 35*4882a593Smuzhiyun 36*4882a593SmuzhiyunCompile everything and build the rootfs image: 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun $ make 39*4882a593Smuzhiyun 40*4882a593SmuzhiyunResult of the build 41*4882a593Smuzhiyun------------------- 42*4882a593Smuzhiyun 43*4882a593SmuzhiyunAfter building, you should get a tree like this: 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun output/images/ 46*4882a593Smuzhiyun +-- rootfs.ext2 47*4882a593Smuzhiyun +-- rootfs.ext4 -> rootfs.ext2 48*4882a593Smuzhiyun +-- sdcard.img 49*4882a593Smuzhiyun +-- sun7i-a20-olinuxino-lime.dtb (lime, mainline) 50*4882a593Smuzhiyun +-- sun7i-a20-olinuxino-lime2.dtb (lime2, mainline) 51*4882a593Smuzhiyun +-- sun7i-a20-olinuxino-micro.dtb (micro, mainline) 52*4882a593Smuzhiyun +-- u-boot.bin 53*4882a593Smuzhiyun +-- u-boot-sunxi-with-spl.bin 54*4882a593Smuzhiyun `-- zImage 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun 57*4882a593SmuzhiyunHow to write the SD card 58*4882a593Smuzhiyun======================== 59*4882a593Smuzhiyun 60*4882a593SmuzhiyunThe sdcard.img file is a complete bootable image ready to be written 61*4882a593Smuzhiyunon the boot medium. To install it, simply copy the image to a uSD 62*4882a593Smuzhiyuncard: 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun # dd if=output/images/sdcard.img of=/dev/sdX 65*4882a593Smuzhiyun 66*4882a593SmuzhiyunWhere 'sdX' is the device node of the uSD. 67*4882a593Smuzhiyun 68*4882a593SmuzhiyunEject the SD card, insert it in the A20-OLinuXino board, and power it up. 69*4882a593Smuzhiyun 70