1. WP1- Documentation Booting Petalinux from TFTP and using Network file system
Section for developers
Zynq 7020
R. Assiro

2. Boot a PetaLinux Image on Hardware with
Trivial File Trasfer Protocoll (TFTP)
TFTP boot saves a lot of time because it is much faster than booting through JTAG and you don’t
have to flash the image for every change in kernel source.
This section assumes that the following prerequisites have been satisfied:
- FSBL installed on QSPI partition
- (Bitstream file is optional)
- UBOOT installed on QSPI partition
- UUB Ethernet connection works
- UUB console connection works
R. Assiro

3. R. Assiro Running Petalinux (QSPI memory map) First Stage Boot Loader
To build a linux image for QSPI memory on UUB’s Zynq you need:
Software Xilinx SDK
Files:
FSBL (generated by petalinux builder)
Bitstream file (generated from Vivado for the PL side of the FPGA)
Universal Booloader for Zynq (folder images of petalinux builder)
Kernel image (zImage)
Device tree file and image of root file system compressed.
All of this file are generated in petalinux compliling process. I will describe this process in my next document.
The QSPI memory allocation:
FBSL from the address 0x runs U-boot for the second stage of the boot
U-Boot runs automatically the kernel image from the address memory 0x of the QSPI flash. (to change this parameter I think is necessary to recompile U-BOOT). By serial terminal windows is possible to stop the process to control U-boot directly.
For developing is possible to run Petalinux (Image.ub) by TFTP istead the QSPI.
First Stage Boot Loader
FSBL.elf
RUN
Bitstream (optional but neede final)
design_wrapper.bit
Second stage bootloader U-BOOT
U-boot.elf
RUN
Kernel start address 0x
Linux Kernel
Devicetree.dtb
Image.ub
RAM Disk image (compressed)
rootfs.cpio.gz
R. Assiro

4. QSPI Flash Memory partitions
Image.ub generated from petalinux build
QSPI memory map
Memory Address 0x
Header zone
FSBL 0x
bitstream
Image.ub 0x
U-boot 0x
KERNEL
Devicetre.dtb
Image.ub
Root File System
R. Assiro

5. Boot a Petalinux image on UUB with TFTP
When U-boot is startedUUB cans get a IP number from
Network.
This can be done using the following command:
U-Boot – Petalinux> print serverip
Set the server IP address to the host address with:
U-Boot – Petalinux> set serverip <host ip addr>
U-Boot – Petalinux> saveenv
Boot the kernel from your host
U-Boot – Petalinux> run netboot
Jtag
USB
Serial console
USB
LAN
Network
R. Assiro