1Amarula A64 Relic 2================ 3 4Amarula A64-Relic is an Allwinner A64 based IoT device, which supports: 5- Allwinner A64 Cortex-A53 6- Mali-400MP2 GPU 7- AXP803 PMIC 8- 1GB DDR3 RAM 9- 8GB eMMC 10- AP6330 Wifi/BLE 11- MIPI-DSI 12- CSI: OV5640 sensor 13- USB OTG 14- 12V DC power supply 15 16Wiki link: 17https://openedev.amarulasolutions.com/display/ODWIKI/Amarual+A64-Relic 18 19Build 20===== 21 22 $ make amarula_a64_relic_defconfig 23 24 $ make 25 26build files at output/images/: 27 - sunxi-spl.bin 28 - u-boot.itb 29 - Image 30 - sun50i-a64-amarula-relic.dtb 31 - boot.vfat 32 - rootfs.ext4 33 34Write eMMC 35========= 36 37The board comes with an operating system preloaded on the eMMC. 38To replace it with the Buildroot-built system, take the following 39steps 40 411. Connect the board UART with host and open minicom(ttyUSBx/115200N8) 42 432. Supply 12V DC for power-on the board. 44 453. Interrupt U-Boot by pressing enter 46 474. Create GPT partitions 48 => mmc dev 1 49 => gpt write mmc 1 $partitions 50 515. Connect the board USB-OTG with USB slot on the host. 52 536. Initiate fastboot 54 => fastboot 0 55 567. Write images from host onto eMMC using fastboot 57 $ cd output/images 58 $ sudo fastboot -i 0x1f3a flash loader1 sunxi-spl.bin 59 $ sudo fastboot -i 0x1f3a flash loader2 u-boot.itb 60 $ sudo fastboot -i 0x1f3a flash esp boot.vfat 61 $ sudo fastboot -i 0x1f3a flash system rootfs.ext4 62 63Update eMMC during Development 64============================== 65 66During development, reflashing the entire filesystem image at every 67change is time consuming. A useful alternative is to directly access 68over USB the filesystem stored on the eMMC, using the USB Mass Storage 69capability of U-Boot. To achieve this: 70 711. Build U-Boot by enabling UMS 72 $ make uboot-menuconfig 73 (select CONFIG_CMD_USB_MASS_STORAGE=y) 74 752. Follow all 6 steps from 'Write eMMC' and mount eMMC on host 76 => mmc dev 1 77 => ums 0 mmc 1 78 79WiFi 80==== 81 82 # wpa_passphrase ACCESSPOINTNAME >> /etc/wpa_supplicant.conf 83 (type password and enter) 84 # wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf -B 85 # udhcpc -i wlan0 86 # ping google.com 87 88-- 89Jagan Teki <jagan@amarulasolutions.com> 9029-Jun-2018 91