1Intro 2===== 3 4This default configuration will allow you to start experimenting with 5the buildroot environment for the MacchiatoBin board based on the 6Marvell Armada 8040 SoC. Documentation for the board hardware and 7software is available on the wiki at: http://wiki.macchiatobin.net 8 9This default configuration will bring up the board and allow access 10through the serial console. 11 12How to build 13============ 14 15Default configuration provides the following BSP versions: 16 - Linux v5.6.3 (mainline) 17 - U-Boot v2020.01 (mainline) 18 - ATF v1.5-18.12.2 (Marvell) 19 20To build images run the following commands: 21 22 $ make solidrun_macchiatobin_defconfig 23 $ make 24 25How to write the SD card 26======================== 27 28Once the build process is finished you will have an image 29called "sdcard.img" in the output/images/ directory. 30 31Copy the bootable "sdcard.img" onto an SD card with "dd": 32 33 $ sudo dd if=output/images/sdcard.img of=/dev/sdX bs=1M conv=fsync 34 $ sudo sync 35 36How to boot the board 37===================== 38 39The MacchiatoBin board can be setup to load the bootloader from 40different sources including eMMC, SPI flash, and SD-card. 41 42On Rev 1.2 board to select boot from SD-card the DIP switches 43SW1 and SW2 should be configured as follows: 44 45SW2: 01110 46SW1: 1xxxx 47 48The upcoming Rev 1.3 board will have a single pins header J1 instead 49of the SW1/2 DIP switches. To boot from SD-card the setting of J1 50jumpers should match the DIP switches of Rev v1.2 board 51from left to right: 52 53J1: 011101xxxx 54 55Insert the micro SDcard in the MacchiatoBin board and power it up. 56The serial console is accessible at the micro-USB Type-B connector 57marked CON9. The serial line settings are 115200 8N1. 58 59U-Boot environment 60================== 61 62By default current configuration provides U-Boot that keeps environment 63in SD/eMMC. However, if needed, u-boot-fragment.config can be tweaked 64so that U-Boot will keep environment in SPI flash. On the first boot 65SPI flash may be empty or it may contain a stale environment that 66prevents proper boot. Then the following commands can be used 67to boot the board: 68 69=> ext4load mmc 1:1 0x01700000 /boot/uEnv-example.txt 70=> env import -t 0x01700000 $filesize 71=> boot 72 73The example environment from uEnv-example.txt can be written to 74SPI flash using the following commands: 75 76=> env default -f -a 77=> ext4load mmc 1:1 0x01700000 /boot/uEnv-example.txt 78=> env import -t 0x01700000 $filesize 79=> saveenv 80