digilent_zedboard

A complete LiteX implementation workflow for Zynq-7000

Features:

• LiteX BIOS running on Cortex-A9 Arm core, talking to LiteX gateware over AXI/Wishbone
• U-Boot with SPL enabling boot from QSPI flash or SD card

Howto:

• look at the top-level readme, provide the required tools
• build all binaries: make -f Makefile.zedboard from the top level
• choose one of the boot options below and configure your board accordingly
• option 1 - boot from SD card: format 1st partition as FAT32, copy these files to its root:
  • lib/u-boot/spl/boot.bin
  • lib/u-boot/u-boot.img
  • build/digilent_zedboard/boot.scr
  • build/digilent_zedboard/gateware/digilent_zedboard.bit as fpga.bit
  • build/digilent_zedboard/software/bios/bios.bin
• option 2 - boot from QSPI flash: flash build/digilent_zedboard/qspi.bin into board's memory one of these ways:
  • with make -f Makefile.zedboard flash via zynq_flash (uses xsct from Vitis)
  • with make -f Makefile.zedboard flash2 - uses program_flash from Vitis, needs FSBL binary, one can be taken here (boot_image/zynq_fsbl.elf)
  • with U-Boot sf command (to be described) link
• option 3 - boot from JTAG: make -f Makefile.zedboard load (uses xsct from Vitis)
• access the booted system via USB-Serial terminal

Notes:

• there is nearly nothing specific to Zedboard in the current implementation, will work as is or with minimal changes on other Zynq boards
• there are options for debugging over JTAG with either xsct or openocd+gdb (to be described)