我在windows上安装了vivado 2016.4 （和SDK），裸机下载程序到zedboard，能正常工作。
我安装petalinux在虚拟机上，当我照着ug977做到第9页。用jtag启动时，出现如下问题：
请问我gai如何解决呢？是不是需要什么命令让虚拟机上的petalinux正确连接到jtag_hw_server？
问题现象：
root@ubuntu:/home/project/test1/avnet-digilent-zedboard-2017.2# petalinux-boot --jtag --prebuilt 3
INFO: Append dtb - /home/project/test1/avnet-digilent-zedboard-2017.2/pre-built/linux/images/system.dtb and other options to boot zImage
INFO: Launching XSDB for file download and boot.
INFO: This may take a few minutes, depending on the size of your image.
INFO: Configuring the FPGA...
INFO: Downloading bitstream to the target.
No supported FPGA device found
invoked from within
"::tcf::eval -progress ::xsdb::print_progress {::tcf::cache_enter tcfchan#0 {tcf_cache_eval {process_tcf_actions_cache_client ::tcfclient#0::arg}}}"
(procedure "::tcf::cache_eval_with_progress" line 2)
invoked from within
"::tcf::cache_eval_with_progress [dict get $arg chan] [list process_tcf_actions_cache_client $argvar] $progress"
(procedure "process_tcf_actions" line 1)
invoked from within
"process_tcf_actions $arg ::xsdb::print_progress"
(procedure "fpga" line 429)
invoked from within
"fpga "/home/project/test1/avnet-digilent-zedboard-2017.2/pre-built/linux/implementation/download.bit""
(file "/tmp/tmp.mgHy8ObGav" line 5)
INFO: The XSDB log is as follows
attempting to launch hw_server
****** Xilinx hw_server v2017.2
**** Build date : Jun 15 2017-18:45:18
** Copyright 1986-2017 Xilinx, Inc. All Rights Reserved.
INFO: hw_server application started
INFO: Use Ctrl-C to exit hw_server application
INFO: To connect to this hw_server instance use url: TCP:127.0.0.1:3121