Nios® II Embedded Design Suite (EDS)
Support for Embedded Development Tools, Processors (SoCs and Nios® II processor), Embedded Development Suites (EDSs), Boot and Configuration, Operating Systems, C and C++
Announcements
Intel Support hours are Monday-Fridays, 8am-5pm PST, except Holidays. Thanks to our community members who provide support during our down time or before we get to your questions. We appreciate you!

Need Forum Guidance? Click here
Search our FPGA Knowledge Articles here.
12453 Discussions

Altera cyclone5 board can't start without serial cable plugged

Altera_Forum
Honored Contributor II
997 Views

I'm using the Altera Cyclone V Soc dev Kit and Linux Angstrom provides by rocketboards (http://rocketboards.org/foswiki/documentation/gsrd141) Kernel is : 3.10 LTSI. For me, Linux can't start if any serial cable is not plugged on UART USB port (J8).  

I already removed getty which launched a login prompt at start up. I also tried to change CMD_LINE in .config kernel's file to disable console. 

What should I change to enable linux to start properly ? Is that simply possible ? Have I to rebuild the kernel or u-boot and change configuration ?
0 Kudos
3 Replies
Altera_Forum
Honored Contributor II
168 Views

http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=167&no=816&partno=4 

Please check "How to Fix microSD Card Boot NG(rev. D)", hopefully it hits your question.
Altera_Forum
Honored Contributor II
168 Views

could you make a complete reset? flash a 14.1 SOF file, flash 14.1 SD card GHRD image, and ensure all teh jumper in the default form? just to isolate is not the version of the GHRD that you are using got error.

Altera_Forum
Honored Contributor II
168 Views

We had the same problem with our custom board. A floating RX pin is no good. This thread helped us to find the problem.

Reply