We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
Hi Everyone,
We just bought a Juno Versatile Express board for development. Using the getting started guides and I have successfully installed DS-5 on a host and a rootfs on the board. I'm using the LAMP image provided by Linaro for use with the Juno board (linaro-image-lamp-genericarmv8-20150618-754.rootfs.tar.gz). To set up and test CoreSight I am using the guide provided (On-Target Trace Using the CoreSight Access Library | ARM DS-5 Development Studio) and the readmes provided within the CoreSight_access example source.
Building is no problem but I have two issues:
1. When trying to disable the cpuidle I find that I have no cpuidle directory in any /sys/devices/system/cpu/cpu$ folder.
2. When attempting to run the tracedemo example (rel or dbg) I receive a "CSREG: Failed to detect the board!" error. The Juno r1 is defined in the source as a supported board (and also mentioned in the readme as supported).
Does anyone have an idea why I would be seeing this error?
Thanks in advance for any insight you can provide on CoreSight!
Steve
Hello I have a similar problem, but I am working with a xilinx zybo board, after I execute the tracedemo program i get:
$ ./tracedemo
Default configuration, no CPU affinity selected. ITM disabled.
kernel symbo
And then the system hangs. Any suggestion?
From <DS-5>/examples/CoreSight_Access_Library.zip/DS-5Examples/CoreSight_access/demos/cs_demo_known_boards.c:
const struct board known_boards[] = { { .do_registration = do_registration_arndale, .n_cpu = 2, .hardware = "ARNDALE", }, { .do_registration = do_registration_tc2, .n_cpu = 5, .hardware = "ARM-Versatile Express", }, { .do_registration = do_registration_juno, .n_cpu = 6, .hardware = "Juno", }, { .do_registration = do_registration_altera, .n_cpu = 2, .hardware = "Altera SOCFPGA", }, { .do_registration = do_registration_snowball, .n_cpu = 2, .hardware = "ST-Ericsson Snowball platform", }, { .do_registration = do_registration_axx5500, .n_cpu = 16, .hardware = "LSI Axxia", }, {} };
The Xilinx Zybo board is not listed as a known board and therefore is not supported.