- OpenOCD
+Welcome to OpenOCD!
+===================
- Free and Open On-Chip Debugging, In-System Programming
- and Boundary-Scan Testing
- Copyright (c) 2004, 2005, 2006 Dominic Rath
+OpenOCD provides on-chip programming and debugging support with a
+layered architecture of JTAG interface and TAP support including:
-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.
+- (X)SVF playback to facilitate automated boundary scan and FPGA/CPLD
+ programming;
+- debug target support (e.g. ARM, MIPS): single-stepping,
+ breakpoints/watchpoints, gprof profiling, etc;
+- flash chip drivers (e.g. CFI, NAND, internal flash);
+- embedded TCL interpreter for easy scripting.
-User interaction is realized through a telnet command line interface and a gdb
-(The GNU Debugger) remote protocol server.
+Several network interfaces are available for interacting with OpenOCD:
+telnet, TCL, and GDB. The GDB server enables OpenOCD to function as a
+"remote target" for source-level debugging of embedded systems using
+the GNU GDB program (and the others who talk GDB protocol, e.g. IDA
+Pro).
-1. JTAG hardware
+This README file contains an overview of the following topics:
-Currently, OpenOCD supports three types of JTAG interfaces:
+- quickstart instructions,
+- how to find and build more OpenOCD documentation,
+- list of the supported hardware,
+- the installation and build process,
+- packaging tips.
-- 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 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.
+============================
+Quickstart for the impatient
+============================
-- 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:
+If you have a popular board then just start OpenOCD with its config,
+e.g.:
-* 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.
+ openocd -f board/stm32f4discovery.cfg
-* OOCD-Link: http://www.joernonline.de/dw/doku.php?id=en:projects:oocdlink
-Similar to the USBJTAG, this design comes with free schematics, too.
+If you are connecting a particular adapter with some specific target,
+you need to source both the jtag interface and the target configs,
+e.g.:
-* 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.
+ openocd -f interface/ftdi/jtagkey2.cfg -c "transport select jtag" \
+ -f target/ti_calypso.cfg
-* 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.
+ openocd -f interface/stlink.cfg -c "transport select hla_swd" \
+ -f target/stm32l0.cfg
-* 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.
+After OpenOCD startup, connect GDB with
-* 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.
+ (gdb) target extended-remote localhost:3333
-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
+=====================
+OpenOCD Documentation
+=====================
-This version of openocd supports the following cores:
+In addition to the in-tree documentation, the latest manuals may be
+viewed online at the following URLs:
-- ARM7TDMI(-s)
-- ARM9TDMI
-- ARM920t
-- ARM922t
-- ARM966e
+ OpenOCD User's Guide:
+ http://openocd.org/doc/html/index.html
-Support for Intel XScale CPUs (PXA25x, PXA27x and IXP4xx) is currently being
-developed.
+ OpenOCD Developer's Manual:
+ http://openocd.org/doc/doxygen/html/index.html
-3. Host platforms
+These reflect the latest development versions, so the following section
+introduces how to build the complete documentation from the package.
-OpenOCD was originally developed on x86-Linux, but has since then been ported
-to run on Windows/Cygwin, native Windows with MinGW, FreeBSD, x86-64-Linux and
-(though it's not fully working yet) PowerPC OS-X.
+For more information, refer to these documents or contact the developers
+by subscribing to the OpenOCD developer mailing list:
-4. Documentation
+ openocd-devel@lists.sourceforge.net
-Documentation for the OpenOCD is hosted in the Berlios OpenFacts Wiki at
-http://openfacts.berlios.de/index-en.phtml?title=Open_On-Chip_Debugger.
+Building the OpenOCD Documentation
+----------------------------------
-5. Licensing
+By default the OpenOCD build process prepares documentation in the
+"Info format" and installs it the standard way, so that "info openocd"
+can access it.
-OpenOCD is licensed under the terms of the GNU General Public License, see the
-file COPYING for details.
+Additionally, the OpenOCD User's Guide can be produced in the
+following different formats:
+ # If PDFVIEWER is set, this creates and views the PDF User Guide.
+ make pdf && ${PDFVIEWER} doc/openocd.pdf
+
+ # If HTMLVIEWER is set, this creates and views the HTML User Guide.
+ make html && ${HTMLVIEWER} doc/openocd.html/index.html
+
+The OpenOCD Developer Manual contains information about the internal
+architecture and other details about the code:
+
+ # NB! make sure doxygen is installed, type doxygen --version
+ make doxygen && ${HTMLVIEWER} doxygen/index.html
+
+
+==================
+Supported hardware
+==================
+
+JTAG adapters
+-------------
+
+AICE, ARM-JTAG-EW, ARM-USB-OCD, ARM-USB-TINY, AT91RM9200, axm0432,
+BCM2835, Bus Blaster, Buspirate, Chameleon, CMSIS-DAP, Cortino, DENX,
+Digilent JTAG-SMT2, DLC 5, DLP-USB1232H, embedded projects, eStick,
+FlashLINK, FlossJTAG, Flyswatter, Flyswatter2, Gateworks, Hoegl, ICDI,
+ICEBear, J-Link, JTAG VPI, JTAGkey, JTAGkey2, JTAG-lock-pick, KT-Link,
+Lisa/L, LPC1768-Stick, MiniModule, NGX, NXHX, OOCDLink, Opendous,
+OpenJTAG, Openmoko, OpenRD, OSBDM, Presto, Redbee, RLink, SheevaPlug
+devkit, Stellaris evkits, ST-LINK (SWO tracing supported),
+STM32-PerformanceStick, STR9-comStick, sysfsgpio, TUMPA, Turtelizer,
+ULINK, USB-A9260, USB-Blaster, USB-JTAG, USBprog, VPACLink, VSLLink,
+Wiggler, XDS100v2, Xverve.
+
+Debug targets
+-------------
+
+ARM11, ARM7, ARM9, AVR32, Cortex-A, Cortex-R, Cortex-M, LS102x-SAP,
+Feroceon/Dragonite, DSP563xx, DSP5680xx, EnSilica eSi-RISC, FA526, MIPS
+EJTAG, NDS32, XScale, Intel Quark.
+
+Flash drivers
+-------------
+
+ADUC702x, AT91SAM, ATH79, AVR, CFI, DSP5680xx, EFM32, EM357, eSi-TSMC,
+FM3, FM4, Kinetis, LPC8xx/LPC1xxx/LPC2xxx/LPC541xx, LPC2900, LPCSPIFI,
+Marvell QSPI, Milandr, NIIET, NuMicro, PIC32mx, PSoC4, PSoC5LP, SiM3x,
+Stellaris, STM32, STMSMI, STR7x, STR9x, nRF51; NAND controllers of
+AT91SAM9, LPC3180, LPC32xx, i.MX31, MXC, NUC910, Orion/Kirkwood,
+S3C24xx, S3C6400, XMC1xxx, XMC4xxx.
+
+
+==================
+Installing OpenOCD
+==================
+
+A Note to OpenOCD Users
+-----------------------
+
+If you would rather be working "with" OpenOCD rather than "on" it, your
+operating system or JTAG interface supplier may provide binaries for
+you in a convenient-enough package.
+
+Such packages may be more stable than git mainline, where
+bleeding-edge development takes place. These "Packagers" produce
+binary releases of OpenOCD after the developers produces new "release"
+versions of the source code. Previous versions of OpenOCD cannot be
+used to diagnose problems with the current release, so users are
+encouraged to keep in contact with their distribution package
+maintainers or interface vendors to ensure suitable upgrades appear
+regularly.
+
+Users of these binary versions of OpenOCD must contact their Packager to
+ask for support or newer versions of the binaries; the OpenOCD
+developers do not support packages directly.
+
+A Note to OpenOCD Packagers
+---------------------------
+
+You are a PACKAGER of OpenOCD if you:
+
+- Sell dongles and include pre-built binaries;
+- Supply tools or IDEs (a development solution integrating OpenOCD);
+- Build packages (e.g. RPM or DEB files for a GNU/Linux distribution).
+
+As a PACKAGER, you will experience first reports of most issues.
+When you fix those problems for your users, your solution may help
+prevent hundreds (if not thousands) of other questions from other users.
+
+If something does not work for you, please work to inform the OpenOCD
+developers know how to improve the system or documentation to avoid
+future problems, and follow-up to help us ensure the issue will be fully
+resolved in our future releases.
+
+That said, the OpenOCD developers would also like you to follow a few
+suggestions:
+
+- Send patches, including config files, upstream, participate in the
+ discussions;
+- Enable all the options OpenOCD supports, even those unrelated to your
+ particular hardware;
+- Use "ftdi" interface adapter driver for the FTDI-based devices.
+
+
+================
+Building OpenOCD
+================
+
+The INSTALL file contains generic instructions for running 'configure'
+and compiling the OpenOCD source code. That file is provided by
+default for all GNU autotools packages. If you are not familiar with
+the GNU autotools, then you should read those instructions first.
+
+The remainder of this document tries to provide some instructions for
+those looking for a quick-install.
+
+OpenOCD Dependencies
+--------------------
+
+GCC or Clang is currently required to build OpenOCD. The developers
+have begun to enforce strict code warnings (-Wall, -Werror, -Wextra,
+and more) and use C99-specific features: inline functions, named
+initializers, mixing declarations with code, and other tricks. While
+it may be possible to use other compilers, they must be somewhat
+modern and could require extending support to conditionally remove
+GCC-specific extensions.
+
+You'll also need:
+
+- make
+- libtool
+- pkg-config >= 0.23 (or compatible)
+
+Additionally, for building from git:
+
+- autoconf >= 2.64
+- automake >= 1.14
+- texinfo
+
+USB-based adapters depend on libusb-1.0 and some older drivers require
+libusb-0.1 or libusb-compat-0.1. A compatible implementation, such as
+FreeBSD's, additionally needs the corresponding .pc files.
+
+USB-Blaster, ASIX Presto and OpenJTAG interface adapter
+drivers need:
+ - libftdi: http://www.intra2net.com/en/developer/libftdi/index.php
+
+CMSIS-DAP support needs HIDAPI library.
+
+Permissions delegation
+----------------------
+
+Running OpenOCD with root/administrative permissions is strongly
+discouraged for security reasons.
+
+For USB devices on GNU/Linux you should use the contrib/60-openocd.rules
+file. It probably belongs somewhere in /etc/udev/rules.d, but
+consult your operating system documentation to be sure. Do not forget
+to add yourself to the "plugdev" group.
+
+For parallel port adapters on GNU/Linux and FreeBSD please change your
+"ppdev" (parport* or ppi*) device node permissions accordingly.
+
+For parport adapters on Windows you need to run install_giveio.bat
+(it's also possible to use "ioperm" with Cygwin instead) to give
+ordinary users permissions for accessing the "LPT" registers directly.
+
+Compiling OpenOCD
+-----------------
+
+To build OpenOCD, use the following sequence of commands:
+
+ ./bootstrap (when building from the git repository)
+ ./configure [options]
+ make
+ sudo make install
+
+The 'configure' step generates the Makefiles required to build
+OpenOCD, usually with one or more options provided to it. The first
+'make' step will build OpenOCD and place the final executable in
+'./src/'. The final (optional) step, ``make install'', places all of
+the files in the required location.
+
+To see the list of all the supported options, run
+ ./configure --help
+
+Cross-compiling Options
+-----------------------
+
+Cross-compiling is supported the standard autotools way, you just need
+to specify the cross-compiling target triplet in the --host option,
+e.g. for cross-building for Windows 32-bit with MinGW on Debian:
+
+ ./configure --host=i686-w64-mingw32 [options]
+
+To make pkg-config work nicely for cross-compiling, you might need an
+additional wrapper script as described at
+
+ http://www.flameeyes.eu/autotools-mythbuster/pkgconfig/cross-compiling.html
+
+This is needed to tell pkg-config where to look for the target
+libraries that OpenOCD depends on. Alternatively, you can specify
+*_CFLAGS and *_LIBS environment variables directly, see "./configure
+--help" for the details.
+
+Parallel Port Dongles
+---------------------
+
+If you want to access the parallel port using the PPDEV interface you
+have to specify both --enable-parport AND --enable-parport-ppdev, since the
+the later option is an option to the parport driver.
+
+The same is true for the --enable-parport-giveio option, you have to
+use both the --enable-parport AND the --enable-parport-giveio option
+if you want to use giveio instead of ioperm parallel port access
+method.
+
+
+==========================
+Obtaining OpenOCD From GIT
+==========================
+
+You can download the current GIT version with a GIT client of your
+choice from the main repository:
+
+ git://git.code.sf.net/p/openocd/code
+
+You may prefer to use a mirror:
+
+ http://repo.or.cz/r/openocd.git
+ git://repo.or.cz/openocd.git
+
+Using the GIT command line client, you might use the following command
+to set up a local copy of the current repository (make sure there is no
+directory called "openocd" in the current directory):
+
+ git clone git://git.code.sf.net/p/openocd/code openocd
+
+Then you can update that at your convenience using
+
+ git pull
+
+There is also a gitweb interface, which you can use either to browse
+the repository or to download arbitrary snapshots using HTTP:
+
+ http://repo.or.cz/w/openocd.git
+
+Snapshots are compressed tarballs of the source tree, about 1.3 MBytes
+each at this writing.
projects / openocd / blobdiff