Xilinx Kria KV260 User Manual

Primary Boot Device
The primary boot device is a QSPI device located on the SOM. The necessary elements are
packaged in a Zynq
®
UltraScale+™ MPSoC specic format and le captured as BOOT.BIN. The
BOOT.BIN le contains the board-specic boot rmware that consists of the following elements:
• FSBL: First-stage boot-loader rmware
• PMU: Plaorm management unit rmware
• ATF: Arm
®
trusted rmware
• U-Boot: Second-stage boot loader
U-Boot provides the funconality for the hand-o between the primary boot device and the
secondary boot device. It will search for both the SD card and eMMC secondary boot devices; if
both are detected it will provide a menu interface to you to select the desired Linux boot target.
The primary boot device provides a redundant copy of boot rmware arranged in an A/B
conguraon. The A/B conguraon provides a dynamic primary and secondary image operaon
with corresponding update mechanisms. On boot, the system automacally boots from the
dened primary image, and, if boot fails, it falls back to the previously known good boot image.
Secondary Boot Device
The secondary boot device on the KV260 Starter Kit is the SD card. It contains the operang
system image and associated applicaon les. The KV260 Starter Kit accelerated applicaon
references are built on the Linux operang system. The Geng Started web page provides a pre-
built reference image that can be wrien to a microSD card for out-of-the-box funconality.
SOM board support packages (BSPs) are also available if you want to customize your OS.
RECOMMENDED:
The SOM is designed to use SDHC standard microSD cards.
Chapter 3: Boot Devices and Firmware Overview
UG1089 (v1.2) July 26, 2022 www.xilinx.com
KV260 Starter Kit 13
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Xilinx Kria KV260 Specifications

General

Brand	Xilinx
Model	Kria KV260
Category	Controller
Language	English