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STREAM Linux Installation

1 Prerequisites

1.1 Software

1.2 Hardware

1.3 Files

  • FPGA image (stream.sof)
  • Linux image (vmlinux)

2 Programming the FPGA

Connect the USB Blaster to the FPGA JTAG port. Use the Quartus programmer to load the FPGA image stream.sof to the board or convert the sof file to an rbf file and load it with the LMS7 GUI.

3 Attach serial console

The following pins are used for UART communication.

  • FPGA_GPIO 1 : TX (from computer to Stream board)
  • FPGA_GPIO 3 : RX (from Stream board to computer)
  • FPGA_GPIO 10 : GND

The following UART settings are used for the Linux system

  • Baud rate : 115200

Open a terminal window and connect to the serial console (e.g. screen /dev/ttyUSB0 115200)

4 Loading Linux

Go to the directory containing the Linux image (vmlinux). Launch openocd with openocd -f interface/altera-usb-blaster.cfg -f board/or1k_generic.cfg If everything works as expected, you should see the following in your terminal:

OpenOCD output

 Open On-Chip Debugger 0.9.0-dev-00211-g1e23496 (2015-01-20-13:27)
Licensed under GNU GPL v2
For bug reports, read
Warn : Adapter driver 'usb_blaster' did not declare which transports it allows; assuming legacy JTAG-only
Info : only one transport option; autoselect 'jtag'
Info : vjtag tap selected
Info : adv debug unit selected
Info : Option 7 is passed to adv debug unit
Info : set servers polling period to 1ms
adapter speed: 3000 kHz
Info : No lowlevel driver configured, will try them all
Info : usb blaster interface using libftdi
Info : This adapter doesn't support configurable speed
Info : JTAG tap: or1200.cpu tap/device found: 0x020f40dd (mfg: 0x06e, part: 0x20f4, ver: 0x0)
Warn : JTAG tap: or1200.cpu       UNEXPECTED: 0x020f40dd (mfg: 0x06e, part: 0x20f4, ver: 0x0)
Error: JTAG tap: or1200.cpu  expected 1 of 1: 0x020b30dd (mfg: 0x06e, part: 0x20b3, ver: 0x0)
Error: Trying to use configured scan chain anyway...
Warn : Bypassing JTAG setup events due to errors
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Info : adv debug unit is configured with option ENABLE_JSP_MULTI
Info : adv debug unit is configured with option ENABLE_JSP_SERVER
Halting processor
target state: halted
Chip is or1200.cpu, Endian: big, type: or1k
Target ready...

Open a new terminal window and connect to the OpenOCD proxy with telnet localhost 4444. This should result in something like the following:

OpenOCD telnet output

Trying ::1...
telnet: connect to address ::1: Connection refused
Connected to localhost.
Escape character is '^]'.
Open On-Chip Debugger

Run the following command to load the Linux image halt; load_image vmlinux; reg npc 0x100; reset The Linux boot process should now start in the terminal connected to the serial console. After the boot is complete you should be greeted by a message saying Please press Enter to activate this console.