README

   1 Welcome to OpenOCD!
   2 ===================
   3
   4 OpenOCD provides on-chip programming and debugging support with a
   5 layered architecture of JTAG interface and TAP support including:
   6
   7 - (X)SVF playback to faciliate automated boundary scan and FPGA/CPLD
   8   programming;
   9 - debug target support (e.g. ARM, MIPS): single-stepping,
  10   breakpoints/watchpoints, etc;
  11 - flash chip drivers (e.g. CFI, NAND, internal flash);
  12 - embedded TCL intepreter for easy scripting.
  13
  14 Several network interfaces are available for interacting with OpenOCD:
  15 telnet, TCL, and GDB. The GDB server enables OpenOCD to function as a
  16 "remote target" for source-level debugging of embedded systems using
  17 the GNU GDB program (and the others who talk GDB protocol, e.g. IDA
  18 Pro).
  19
  20 This README file contains an overview of the following topics:
  21
  22 - quickstart instructions,
  23 - how to find and build more OpenOCD documentation,
  24 - list of the supported hardware,
  25 - the installation and build process,
  26 - packaging tips.
  27
  28
  29 ============================
  30 Quickstart for the impatient
  31 ============================
  32
  33 If you have a popular board then just start OpenOCD with its config,
  34 e.g.:
  35
  36   openocd -f board/stm32f4discovery.cfg
  37
  38 If you are connecting a particular adapter with some specific target,
  39 you need to source both the jtag interface and the target configs,
  40 e.g.:
  41
  42   openocd -f interface/ftdi/jtagkey2.cfg -f target/ti_calypso.cfg
  43
  44 NB: when using an FTDI-based adapter you should prefer configs in the
  45 ftdi directory; the old configs for the ft2232 are deprecated.
  46
  47 After OpenOCD startup, connect GDB with
  48
  49   (gdb) target extended-remote localhost:3333
  50
  51
  52 =====================
  53 OpenOCD Documentation
  54 =====================
  55
  56 In addition to the in-tree documentation, the latest manuals may be
  57 viewed online at the following URLs:
  58
  59   OpenOCD User's Guide:
  60     http://openocd.sourceforge.net/doc/html/index.html
  61
  62   OpenOCD Developer's Manual:
  63     http://openocd.sourceforge.net/doc/doxygen/html/index.html
  64
  65 These reflect the latest development versions, so the following section
  66 introduces how to build the complete documentation from the package.
  67
  68 For more information, refer to these documents or contact the developers
  69 by subscribing to the OpenOCD developer mailing list:
  70
  71         openocd-devel@lists.sourceforge.net
  72
  73 Building the OpenOCD Documentation
  74 ----------------------------------
  75
  76 By default the OpenOCD build process prepares documentation in the
  77 "Info format" and installs it the standard way, so that "info openocd"
  78 can access it.
  79
  80 Additionally, the OpenOCD User's Guide can be produced in the
  81 following different formats:
  82
  83   # If PDFVIEWER is set, this creates and views the PDF User Guide.
  84   make pdf && ${PDFVIEWER} doc/openocd.pdf
  85
  86   # If HTMLVIEWER is set, this creates and views the HTML User Guide.
  87   make html && ${HTMLVIEWER} doc/openocd.html/index.html
  88
  89 The OpenOCD Developer Manual contains information about the internal
  90 architecture and other details about the code:
  91
  92   # NB! make sure doxygen is installed, type doxygen --version
  93   make doxygen && ${HTMLVIEWER} doxygen/index.html
  94
  95
  96 ==================
  97 Supported hardware
  98 ==================
  99
 100 JTAG adapters
 101 -------------
 102
 103 AICE, ARM-JTAG-EW, ARM-USB-OCD, ARM-USB-TINY, AT91RM9200, axm0432,
 104 BCM2835, Bus Blaster, Buspirate, Chameleon, Cortino, DLC 5,
 105 DLP-USB1232H, embedded projects, eStick, FlashLINK, FlossJTAG,
 106 Flyswatter, Flyswatter2, Hoegl, ICDI, ICEBear, J-Link, JTAGkey,
 107 JTAGkey2, JTAG-lock-pick, KT-Link, Lisa/L, LPC1768-Stick, MiniModule,
 108 NGX, NXHX, OOCDLink, Opendous, OpenJTAG, Openmoko, OpenRD, OSBDM,
 109 Presto, Redbee, RLink, SheevaPlug devkit, Stellaris evkits, ST-LINK,
 110 STM32-PerformanceStick, STR9-comStick, sysfsgpio, TUMPA, Turtelizer,
 111 ULINK, USB-A9260, USB-Blaster, USB-JTAG, USBprog, VPACLink, VSLLink,
 112 Wiggler, XDS100v2, Xverve.
 113
 114 Debug targets
 115 -------------
 116
 117 ARM11, ARM7, ARM9, AVR32, Cortex-A, Cortex-R, Cortex-M,
 118 Feroceon/Dragonite, DSP563xx, DSP5680xx, FA526, MIPS EJTAG, NDS32,
 119 XScale.
 120
 121 Flash drivers
 122 -------------
 123
 124 ADUC702x, AT91SAM, AVR, CFI, DSP5680xx, EFM32, EM357, FM3, Kinetis,
 125 LPC2000, LPC2900, LPCSPIFI, PIC32mx, Stellaris, STM32, STMSMI, STR7x,
 126 STR9x; NAND controllers of AT91SAM9, LPC3180, LPC32xx, i.MX31, MXC,
 127 NUC910, Orion/Kirkwood, S3C24xx, S3C6400.
 128
 129
 130 ==================
 131 Installing OpenOCD
 132 ==================
 133
 134 A Note to OpenOCD Users
 135 -----------------------
 136
 137 If you would rather be working "with" OpenOCD rather than "on" it, your
 138 operating system or JTAG interface supplier may provide binaries for
 139 you in a convenient-enough package.
 140
 141 Such packages may be more stable than git mainline, where
 142 bleeding-edge development takes place. These "Packagers" produce
 143 binary releases of OpenOCD after the developers produces new "release"
 144 versions of the source code. Previous versions of OpenOCD cannot be
 145 used to diagnose problems with the current release, so users are
 146 encouraged to keep in contact with their distribution package
 147 maintainers or interface vendors to ensure suitable upgrades appear
 148 regularly.
 149
 150 Users of these binary versions of OpenOCD must contact their Packager to
 151 ask for support or newer versions of the binaries; the OpenOCD
 152 developers do not support packages directly.
 153
 154 A Note to OpenOCD Packagers
 155 ---------------------------
 156
 157 You are a PACKAGER of OpenOCD if you:
 158
 159 - Sell dongles and include pre-built binaries;
 160 - Supply tools or IDEs (a development solution integrating OpenOCD);
 161 - Build packages (e.g. RPM or DEB files for a GNU/Linux distribution).
 162
 163 As a PACKAGER, you will experience first reports of most issues.
 164 When you fix those problems for your users, your solution may help
 165 prevent hundreds (if not thousands) of other questions from other users.
 166
 167 If something does not work for you, please work to inform the OpenOCD
 168 developers know how to improve the system or documentation to avoid
 169 future problems, and follow-up to help us ensure the issue will be fully
 170 resolved in our future releases.
 171
 172 That said, the OpenOCD developers would also like you to follow a few
 173 suggestions:
 174
 175 - Send patches, including config files, upstream, participate in the
 176   discussions;
 177 - Enable all the options OpenOCD supports, even those unrelated to your
 178   particular hardware;
 179 - Use "ftdi" interface adapter driver for the FTDI-based devices.
 180
 181 As a PACKAGER, never link against the FTD2XX library, as the resulting
 182 binaries can't be legally distributed, due to the restrictions of the
 183 GPL.
 184
 185
 186 ================
 187 Building OpenOCD
 188 ================
 189
 190 The INSTALL file contains generic instructions for running 'configure'
 191 and compiling the OpenOCD source code. That file is provided by
 192 default for all GNU autotools packages. If you are not familiar with
 193 the GNU autotools, then you should read those instructions first.
 194
 195 The remainder of this document tries to provide some instructions for
 196 those looking for a quick-install.
 197
 198 OpenOCD Dependencies
 199 --------------------
 200
 201 GCC or Clang is currently required to build OpenOCD. The developers
 202 have begun to enforce strict code warnings (-Wall, -Werror, -Wextra,
 203 and more) and use C99-specific features: inline functions, named
 204 initializers, mixing declarations with code, and other tricks. While
 205 it may be possible to use other compilers, they must be somewhat
 206 modern and could require extending support to conditionally remove
 207 GCC-specific extensions.
 208
 209 You'll also need:
 210
 211 - make
 212 - libtool
 213 - pkg-config >= 0.23 (or compatible)
 214
 215 Additionally, for building from git:
 216
 217 - autoconf >= 2.59
 218 - automake >= 1.9
 219 - texinfo
 220
 221 USB-based adapters depend on libusb-1.0 and some older drivers require
 222 libusb-0.1 or libusb-compat-0.1. A compatible implementation, such as
 223 FreeBSD's, additionally needs the corresponding .pc files.
 224
 225 USB-Blaster, ASIX Presto, OpenJTAG and ft2232 interface adapter
 226 drivers need either one of:
 227   - libftdi: http://www.intra2net.com/en/developer/libftdi/index.php
 228   - ftd2xx: http://www.ftdichip.com/Drivers/D2XX.htm (proprietary,
 229     GPL-incompatible)
 230
 231 Permissions delegation
 232 ----------------------
 233
 234 Running OpenOCD with root/administrative permissions is strongly
 235 discouraged for security reasons.
 236
 237 For USB devices on GNU/Linux you should use the contrib/openocd.udev
 238 rules file. It probably belongs somewhere in /etc/udev/rules.d, but
 239 consult your operating system documentation to be sure. Do not forget
 240 to add yourself to the "plugdev" group.
 241
 242 For parallel port adapters on GNU/Linux and FreeBSD please change your
 243 "ppdev" (parport* or ppi*) device node permissions accordingly.
 244
 245 For parport adapters on Windows you need to run install_giveio.bat
 246 (it's also possible to use "ioperm" with Cygwin instead) to give
 247 ordinary users permissions for accessing the "LPT" registers directly.
 248
 249 Compiling OpenOCD
 250 -----------------
 251
 252 To build OpenOCD, use the following sequence of commands:
 253
 254   ./bootstrap (when building from the git repository)
 255   ./configure [options]
 256   make
 257   sudo make install
 258
 259 The 'configure' step generates the Makefiles required to build
 260 OpenOCD, usually with one or more options provided to it. The first
 261 'make' step will build OpenOCD and place the final executable in
 262 './src/'. The final (optional) step, ``make install'', places all of
 263 the files in the required location.
 264
 265 To see the list of all the supported options, run
 266   ./configure --help
 267
 268 Cross-compiling Options
 269 -----------------------
 270
 271 Cross-compiling is supported the standard autotools way, you just need
 272 to specify the cross-compiling target triplet in the --host option,
 273 e.g. for cross-building for Windows 32-bit with MinGW on Debian:
 274
 275   ./configure --host=i686-w64-mingw32 [options]
 276
 277 To make pkg-config work nicely for cross-compiling, you might need an
 278 additional wrapper script as described at
 279
 280   http://www.flameeyes.eu/autotools-mythbuster/pkgconfig/cross-compiling.html
 281
 282 This is needed to tell pkg-config where to look for the target
 283 libraries that OpenOCD depends on. Alternatively, you can specify
 284 *_CFLAGS and *_LIBS environment variables directly, see "./configure
 285 --help" for the details.
 286
 287 Parallel Port Dongles
 288 ---------------------
 289
 290 If you want to access the parallel port using the PPDEV interface you
 291 have to specify both --enable-parport AND --enable-parport-ppdev, since the
 292 the later option is an option to the parport driver.
 293
 294 The same is true for the --enable-parport-giveio option, you have to
 295 use both the --enable-parport AND the --enable-parport-giveio option
 296 if you want to use giveio instead of ioperm parallel port access
 297 method.
 298
 299 Using FTDI's FTD2XX
 300 -------------------
 301
 302 The (closed source) FTDICHIP.COM solution is faster than libftdi on
 303 Windows. That is the motivation for supporting it even though its
 304 licensing restricts it to non-redistributable OpenOCD binaries, and it
 305 is not available for all operating systems used with OpenOCD. You may,
 306 however, build such copies for personal use.
 307
 308 The FTDICHIP drivers come as either a (win32) ZIP file, or a (Linux)
 309 TAR.GZ file. You must unpack them ``some where'' convenient. As of this
 310 writing FTDICHIP does not supply means to install these files "in an
 311 appropriate place."
 312
 313 You should use the following ./configure options to make use of
 314 FTD2XX:
 315
 316   --with-ftd2xx-win32-zipdir
 317                           Where (CYGWIN/MINGW) the zip file from ftdichip.com
 318                           was unpacked <default=search>
 319   --with-ftd2xx-linux-tardir
 320                           Where (Linux/Unix) the tar file from ftdichip.com
 321                           was unpacked <default=search>
 322   --with-ftd2xx-lib=(static|shared)
 323                           Use static or shared ftd2xx libs (default is static)
 324
 325 Remember, this library is binary-only, while OpenOCD is licenced
 326 according to GNU GPLv2 without any exceptions. That means that
 327 _distributing_ copies of OpenOCD built with the FTDI code would
 328 violate the OpenOCD licensing terms.
 329
 330 Note that on Linux there is no good reason to use these FTDI binaries;
 331 they are no faster (on Linux) than libftdi, and cause licensing issues.
 332
 333
 334 ==========================
 335 Obtaining OpenOCD From GIT
 336 ==========================
 337
 338 You can download the current GIT version with a GIT client of your
 339 choice from the main repository:
 340
 341    git://git.code.sf.net/p/openocd/code
 342
 343 You may prefer to use a mirror:
 344
 345    http://repo.or.cz/r/openocd.git
 346    git://repo.or.cz/openocd.git
 347
 348 Using the GIT command line client, you might use the following command
 349 to set up a local copy of the current repository (make sure there is no
 350 directory called "openocd" in the current directory):
 351
 352    git clone git://git.code.sf.net/p/openocd/code openocd
 353
 354 Then you can update that at your convenience using
 355
 356    git pull
 357
 358 There is also a gitweb interface, which you can use either to browse
 359 the repository or to download arbitrary snapshots using HTTP:
 360
 361    http://repo.or.cz/w/openocd.git
 362
 363 Snapshots are compressed tarballs of the source tree, about 1.3 MBytes
 364 each at this writing.