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- OpenOCD
-
- Free and Open On-Chip Debugging, In-System Programming
- and Boundary-Scan Testing
- Copyright (c) 2004-2007 Dominic Rath
-
- The debugger uses an IEEE 1149-1 compliant JTAG TAP bus master to access on-chip
- debug functionality available on ARM7 and ARM9 based microcontrollers /
- system-on-chip solutions.
-
- User interaction is realized through a telnet command line interface and a gdb
- (The GNU Debugger) remote protocol server.
-
- 1. JTAG hardware
-
- Currently, OpenOCD supports the following JTAG interfaces:
-
- - Parallel port wigglers. These devices connect to a PC's parallel port,
- providing direct access to the JTAG lines. The OpenOCD contains descriptions
- of a few Wiggler layouts, including the original 'Wiggler' design. Other
- layouts (i.e. mapping of parallel port pins to JTAG lines) can be added easily.
- Typical Wiggler speeds are around 12kByte/s code download to an ARM7's RAM.
-
- The list of supported parallel port devices includes:
-
- * Macraigor Wiggler JTAG cable
- * Gateworks GW16012 JTAG programmer
- * Xilinx DLC5 JTAG parallel cable III
- * Ka-Ro TRITON starterkit II JTAG cable
- * Lattice parallel port JTAG cable
- * ST FlashLINK programming cable
-
- - The Amontec JTAG Accelerator. This is a configuration for Amontec's Chameleon
- dongle, a parallel port interface based on a Xilinx CoolRunner CPLD. It uses
- the IEEE1284 EPP parallel port specification, providing many times the
- performance achievable with wiggler-style devices. Additional information is
- available on www.amontec.com.
- Typical JTAG Accelerator speeds are around 120-160kByte/s to an ARM7's RAM.
-
- - FTDI FT2232 based USB devices. The FT2232 (but not FT232 or FT245) features a
- multi-protocol synchronous serial engine (MPSSE) that can be used to run the
- serial JTAG protocol. There are several implemenations of FT2232 based devices:
-
- * USBJTAG: http://www.fh-augsburg.de/~hhoegl/proj/usbjtag/usbjtag.html
- The USBJTAG was designed by Prof. Hubert Hoegl to provide a high-speed USB
- interface for use with the OpenOCD. Schematics are available at the USBJTAG
- website, and a homebrew device can easily be built using the FTDI evaluation
- module DLP2232M.
-
- * OOCD-Link: http://www.joernonline.de/dw/doku.php?id=en:projects:oocdlink
- Similar to the USBJTAG, this design comes with free schematics, too.
-
- * Amontec JTAGkey: www.amontec.com
- The Amontec JTAGkey offers support for a wide variety of target voltages from
- 1.4V to 5V. It also allows the JTAG lines and reset signals to be tri-stated,
- allowing easy interfacing with a wide variety of targets.
-
- * Amontec JTAGkey-Tiny: www.amontec.com
- The Amontec JTAGkey offers support for a wide variety of target voltages from
- 2.8V to 5V. It also allows the reset signals to be tri-stated, allowing easy
- interfacing with a wide variety of targets.
-
- * Olimex ARM-USB-OCD: www.olimex.com
- The Olimex ARM-USB-OCD offers support for a wide vriety of target voltages from
- 2.0V to 5V. It also allows targets to be powered from the ARM-USB-OCD and
- features and additional RS232 UART.
-
- * eVerve Signalyzer: www.signalyzer.com
- The Signalyzer offers support for a wide variety of target voltages from 1.2V to
- 5.5V. A second connector provides access to a TTL level UART.
-
- * American Microsystem M5960 USB JTAG programmer.
-
- * Turtelizer 2: http://www.ethernut.de/en/hardware/turtelizer/index.html
- Another USB JTAG programmer, with freely available schematics. It supports
- target voltages from 1.65V to 5.5V.
-
- * Hitex STR9-comSTICK: http://www.ehitex.de/p_info.php?products_id=292
- A STR912FW44x microcontroller "board" with USB and JTAG functionality.
-
- * Luminary Micro development board evb_lm3s811 JTAG interface.
-
- * ASIX PRESTO: http://www.asix-tools.com/prg_presto.htm
- The ASIX PRESTO is a USB JTAG programmer for a wide range of components, e.g.
- microcontrollers, serial EEPROM and Flash memory chips, CPLDs and others.
-
- * usbprog: http://www.embedded-projects.net/index.php?page_id=165
- The usbprog is a freely programmable USB adapter, which can (among other
- things) use a firmware which turns it into a JTAG programmer/debugger.
-
- All FT2232 based devices may be accessed using either FTDI's proprietary FTD2XX
- library (www.ftdichip.com) or using an open-source replacement from
- http://www.intra2net.com/de/produkte/opensource/ftdi/index.php, also included
- with many Linux distributions.
-
- 2. Supported cores
-
- This version of openocd supports the following ARM7/9 cores:
-
- - ARM7TDMI(-s)
- - ARM9TDMI
- - ARM920t
- - ARM922t
- - ARM926ej-s
- - ARM966e
- - Cortex-M3
-
- Support for Intel XScale CPUs is also included:
-
- - PXA25x
- - PXA27x
- - IXP42x
-
- 3. Host platforms
-
- OpenOCD was originally developed on x86-Linux, but has since then been ported
- to run on Windows/Cygwin, native Windows with MinGW, FreeBSD, IA64-Linux,
- AMD64-Linux, Alpha-Linux, ARM-Linux, and PowerPC OS-X.
-
- 4. Documentation
-
- Documentation for the OpenOCD is hosted in the Berlios OpenFacts Wiki at
- http://openfacts.berlios.de/index-en.phtml?title=Open_On-Chip_Debugger.
-
- 5. Licensing
-
- OpenOCD is licensed under the terms of the GNU General Public License, see the
- file COPYING for details.
-
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