- openocd
+ OpenOCD
- Free and Open On-Chip Debugging, In-System Programming
- and Boundary-Scan Testing
- Copyright (c) 2004, 2005 Dominic Rath
+ 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 /
User interaction is realized through a telnet command line interface and a gdb
(The GNU Debugger) remote protocol server.
-Initially, support for two JTAG TAP bus master interfaces with public hardware
-schematics will be included, but support of additional hardware is an expressed
-goal.
-
1. JTAG hardware
-Currently, openocd contains support for Wiggler-compatible paralell port
-dongles and a USB interface based on the FTDI FT2232, called USBJTAG-1.
-A new version of the USB interface, USB-JTAG v1.2, is available with complete
-schematics (http://www.fh-augsburg.de/~hhoegl/proj/volksmikro/usb-jtag/050910/).
+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
+ * Wiggler 2 cable (basically a wiggler with an LED)
+
+- 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.
+
+* TinCanTools 'Flyswatter' USB JTAG programmer.
-It was tested using Amontec's (www.amontec.com) Chameleon POD in it's
-Wiggler configuration, but homemade wigglers should work just as well.
-In order to use the reset functionality (warm-reset, debug from reset, reset
-and init), the choosen Wiggler has to connect the nSRST line.
+* 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.
-USBJTAG-1 is based on a FTDI DLP2232M module and a few additional parts.
-Schematics are freely available. USB-JTAG v1.2 doesn't use the DLP2232M, but
-has the FTDI chip soldered directly on the PCB. There are two drivers for these
-modules implemented, one using the open source libftdi, the other using FTDI's
-proprietary FTD2XX library.
+* Hitex STR9-comStick: http://www.ehitex.de/p_info.php?products_id=292
+A STR912FW44x microcontroller "board" with USB and JTAG functionality.
+
+* Hitex STM32-PerformanceStick: http://www.hitex.com/stm32-stick/
+A STM32F103RBT6 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.
+
+* Altium universal JTAG cable
+
+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 cores:
+This version of openocd supports the following ARM7/9 cores:
-- ARM7TDMI
+- ARM7TDMI(-s)
- ARM9TDMI
+- ARM920t
+- ARM922t
+- ARM926ej-s
+- ARM966e
+- Cortex-M3
+
+Support for Intel XScale CPUs is also included:
+
+- PXA25x
+- PXA27x
+- IXP42x
+
+And support for the Marvell Feroceon CPU core as found in the
+Orion SoC family is included as well.
+
+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.
-Support for cores with MMUs (ARM720t, ARM920t) is currently being merged.
+There is also and openocd(1) manpage, the 'openocd --help' output and
+an OpenOCD info page (type 'info openocd').
-3. Licensing
+5. Licensing
-openocd is licensed under the terms of the GNU General Public License, see the
+OpenOCD is licensed under the terms of the GNU General Public License, see the
file COPYING for details.
projects / fw / openocd / blobdiff