Booting U-Boot From Jtag - Xilinx ZCU102 Getting Started Quick Manual

Booting U-BOOT from JTAG:

Set the BootMode (SW6) pins to JTAG Mode:
Launch the XSCT (or XSDB) and use the commands below to boot from JTAG below. This script is
given in the jtag_linux folder.

connect

targets -set -filter {name =~ "MicroBlaze PMU"}

dow pmufw.elf

con

targets -set -filter {name =~ "PSU"}

fpga -f design_1_wrapper.bit

# disable isolation for PL

mask_write 0XFFD80118 0x00800000 0x00800000

mask_write 0XFFD80120 0x00800000 0x00800000

# write bootloop and release A53-0 reset

mwr 0xffff0000 0x14000000

mwr 0xFD1A0104 0x380E

exec sleep 1

source psu_init.tcl

psu_init

psu_post_config

dow -data image.ub 0x80000

#Or if using the OSL flow

#dow -data Image 0x80000

#dow -data system.dtb 0x4000000

mwr -force 0xFF1800A8 0xC0

mwr -force 0xFF1800AC 0xC0

targets -set -filter {name =~ "Cortex-A53 #0"}

dow u-boot.elf

dow bl31.elf

con
This will boot the u-boot, then the Linux kernel. If it fails to boot the Linux image, just use the
command below:

booti 0x80000 – 0x4000000
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