4 This is the Buildroot board support for the Digilent Zybo. The Zybo is
5 a development board based on the Xilinx Zynq-7000 based All-Programmable
8 Zybo information including schematics, reference designs, and manuals are
9 available from http://store.digilentinc.com/zybo-zynq-7000-arm-fpga-soc-trainer-board/ .
11 If you want a custom FPGA bitstream to be loaded by U-Boot, copy it as
12 system.bit in board/digilent/zybo/.
14 Steps to create a working system for Zybo:
16 1) make zynq_zybo_defconfig
18 3) write your SD Card with the sdcard.img file using dd by doing
19 $ sudo dd if=output/images/sdcard.img of=/dev/sdX
20 4) insert the SD Card and power up your Zybo
21 5) Expect serial console on the second USB serial port exposed by the board
25 U-Boot SPL 2016.05 (May 20 2016 - 16:16:24)
27 Trying to boot from MMC1
29 spl_load_image_fat_os: error reading image system.dtb, err - -1
30 reading u-boot-dtb.img
31 reading u-boot-dtb.img
34 U-Boot 2016.05 (May 20 2016 - 16:16:24 +0200)
36 Model: Zynq ZYBO Development Board
39 DRAM: ECC disabled 512 MiB
40 MMC: sdhci@e0100000: 0
41 SF: Detected S25FL128S_64K with page size 256 Bytes, erase size 64 KiB, total 16 MiB
45 Model: Zynq ZYBO Development Board
47 Net: ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
48 I2C EEPROM MAC address read failed
50 Warning: ethernet@e000b000 (eth0) using random MAC address - 56:64:dd:a7:6d:94
51 eth0: ethernet@e000b000
56 Once the build process is finished you will have an image called "sdcard.img"
57 in the output/images/ directory.
59 The first partition is a FAT32 partition created at the beginning of the SD Card
60 that contains the following files :
68 The second partition is an ext4 partition that contains the root filesystem.
70 You can alter the booting procedure by modifying the uEnv.txt file
71 in first partition of the SD card. It is a plain text file in format
72 <key>=<value> one per line: