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 facilitate automated boundary scan and FPGA/CPLD
   8   programming;
   9 - debug target support (e.g. ARM, MIPS): single-stepping,
  10   breakpoints/watchpoints, gprof profiling, etc;
  11 - flash chip drivers (e.g. CFI, NAND, internal flash);
  12 - embedded TCL interpreter 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 -c "transport select jtag" \
  43           -f target/ti_calypso.cfg
  44
  45   openocd -f interface/stlink.cfg -c "transport select hla_swd" \
  46           -f target/stm32l0.cfg
  47
  48 After OpenOCD startup, connect GDB with
  49
  50   (gdb) target extended-remote localhost:3333
  51
  52
  53 =====================
  54 OpenOCD Documentation
  55 =====================
  56
  57 In addition to the in-tree documentation, the latest manuals may be
  58 viewed online at the following URLs:
  59
  60   OpenOCD User's Guide:
  61     http://openocd.org/doc/html/index.html
  62
  63   OpenOCD Developer's Manual:
  64     http://openocd.org/doc/doxygen/html/index.html
  65
  66 These reflect the latest development versions, so the following section
  67 introduces how to build the complete documentation from the package.
  68
  69 For more information, refer to these documents or contact the developers
  70 by subscribing to the OpenOCD developer mailing list:
  71
  72         openocd-devel@lists.sourceforge.net
  73
  74 Building the OpenOCD Documentation
  75 ----------------------------------
  76
  77 By default the OpenOCD build process prepares documentation in the
  78 "Info format" and installs it the standard way, so that "info openocd"
  79 can access it.
  80
  81 Additionally, the OpenOCD User's Guide can be produced in the
  82 following different formats:
  83
  84   # If PDFVIEWER is set, this creates and views the PDF User Guide.
  85   make pdf && ${PDFVIEWER} doc/openocd.pdf
  86
  87   # If HTMLVIEWER is set, this creates and views the HTML User Guide.
  88   make html && ${HTMLVIEWER} doc/openocd.html/index.html
  89
  90 The OpenOCD Developer Manual contains information about the internal
  91 architecture and other details about the code:
  92
  93   # NB! make sure doxygen is installed, type doxygen --version
  94   make doxygen && ${HTMLVIEWER} doxygen/index.html
  95
  96
  97 ==================
  98 Supported hardware
  99 ==================
 100
 101 JTAG adapters
 102 -------------
 103
 104 AICE, AM335x, ARM-JTAG-EW, ARM-USB-OCD, ARM-USB-TINY, AT91RM9200, axm0432, BCM2835,
 105 Bus Blaster, Buspirate, Cadence DPI, Cadence vdebug, Chameleon, CMSIS-DAP,
 106 Cortino, Cypress KitProg, DENX, Digilent JTAG-SMT2, DLC 5, DLP-USB1232H,
 107 embedded projects, Espressif USB JTAG Programmer,
 108 eStick, FlashLINK, FlossJTAG, Flyswatter, Flyswatter2,
 109 FTDI FT232R, Gateworks, Hoegl, ICDI, ICEBear, J-Link, JTAG VPI, JTAGkey,
 110 JTAGkey2, JTAG-lock-pick, KT-Link, Linux GPIOD, Lisa/L, LPC1768-Stick,
 111 Mellanox rshim, MiniModule, NGX, Nuvoton Nu-Link, Nu-Link2, NXHX, NXP IMX GPIO,
 112 OOCDLink, Opendous, OpenJTAG, Openmoko, OpenRD, OSBDM, Presto, Redbee,
 113 Remote Bitbang, RLink, SheevaPlug devkit, Stellaris evkits,
 114 ST-LINK (SWO tracing supported), STM32-PerformanceStick, STR9-comStick,
 115 sysfsgpio, Tigard, TI XDS110, TUMPA, Turtelizer, ULINK, USB-A9260, USB-Blaster,
 116 USB-JTAG, USBprog, VPACLink, VSLLink, Wiggler, XDS100v2, Xilinx XVC/PCIe,
 117 Xverve.
 118
 119 Debug targets
 120 -------------
 121
 122 ARM: AArch64, ARM11, ARM7, ARM9, Cortex-A/R (v7-A/R), Cortex-M (ARMv{6/7/8}-M),
 123 FA526, Feroceon/Dragonite, XScale.
 124 ARCv2, AVR32, DSP563xx, DSP5680xx, EnSilica eSi-RISC, EJTAG (MIPS32, MIPS64),
 125 ESP32, ESP32-S2, ESP32-S3, Intel Quark, LS102x-SAP, NDS32, RISC-V, ST STM8,
 126 Xtensa.
 127
 128 Flash drivers
 129 -------------
 130
 131 ADUC702x, AT91SAM, AT91SAM9 (NAND), ATH79, ATmega128RFA1, Atmel SAM, AVR, CFI,
 132 DSP5680xx, EFM32, EM357, eSi-RISC, eSi-TSMC, EZR32HG, FM3, FM4, Freedom E SPI,
 133 GD32, i.MX31, Kinetis, LPC8xx/LPC1xxx/LPC2xxx/LPC541xx, LPC2900, LPC3180, LPC32xx,
 134 LPCSPIFI, Marvell QSPI, MAX32, Milandr, MXC, NIIET, nRF51, nRF52 , NuMicro,
 135 NUC910, Nuvoton NPCX, onsemi RSL10, Orion/Kirkwood, PIC32mx, PSoC4/5LP/6,
 136 Raspberry RP2040, Renesas RPC HF and SH QSPI,
 137 S3C24xx, S3C6400, SiM3x, SiFive Freedom E, Stellaris, ST BlueNRG, STM32,
 138 STM32 QUAD/OCTO-SPI for Flash/FRAM/EEPROM, STMSMI, STR7x, STR9x, SWM050,
 139 TI CC13xx, TI CC26xx, TI CC32xx, TI MSP432, Winner Micro w600, Xilinx XCF,
 140 XMC1xxx, XMC4xxx.
 141
 142
 143 ==================
 144 Installing OpenOCD
 145 ==================
 146
 147 A Note to OpenOCD Users
 148 -----------------------
 149
 150 If you would rather be working "with" OpenOCD rather than "on" it, your
 151 operating system or JTAG interface supplier may provide binaries for
 152 you in a convenient-enough package.
 153
 154 Such packages may be more stable than git mainline, where
 155 bleeding-edge development takes place. These "Packagers" produce
 156 binary releases of OpenOCD after the developers produces new "release"
 157 versions of the source code. Previous versions of OpenOCD cannot be
 158 used to diagnose problems with the current release, so users are
 159 encouraged to keep in contact with their distribution package
 160 maintainers or interface vendors to ensure suitable upgrades appear
 161 regularly.
 162
 163 Users of these binary versions of OpenOCD must contact their Packager to
 164 ask for support or newer versions of the binaries; the OpenOCD
 165 developers do not support packages directly.
 166
 167 A Note to OpenOCD Packagers
 168 ---------------------------
 169
 170 You are a PACKAGER of OpenOCD if you:
 171
 172 - Sell dongles and include pre-built binaries;
 173 - Supply tools or IDEs (a development solution integrating OpenOCD);
 174 - Build packages (e.g. RPM or DEB files for a GNU/Linux distribution).
 175
 176 As a PACKAGER, you will experience first reports of most issues.
 177 When you fix those problems for your users, your solution may help
 178 prevent hundreds (if not thousands) of other questions from other users.
 179
 180 If something does not work for you, please work to inform the OpenOCD
 181 developers know how to improve the system or documentation to avoid
 182 future problems, and follow-up to help us ensure the issue will be fully
 183 resolved in our future releases.
 184
 185 That said, the OpenOCD developers would also like you to follow a few
 186 suggestions:
 187
 188 - Send patches, including config files, upstream, participate in the
 189   discussions;
 190 - Enable all the options OpenOCD supports, even those unrelated to your
 191   particular hardware;
 192 - Use "ftdi" interface adapter driver for the FTDI-based devices.
 193
 194
 195 ================
 196 Building OpenOCD
 197 ================
 198
 199 The INSTALL file contains generic instructions for running 'configure'
 200 and compiling the OpenOCD source code. That file is provided by
 201 default for all GNU autotools packages. If you are not familiar with
 202 the GNU autotools, then you should read those instructions first.
 203
 204 The remainder of this document tries to provide some instructions for
 205 those looking for a quick-install.
 206
 207 OpenOCD Dependencies
 208 --------------------
 209
 210 GCC or Clang is currently required to build OpenOCD. The developers
 211 have begun to enforce strict code warnings (-Wall, -Werror, -Wextra,
 212 and more) and use C99-specific features: inline functions, named
 213 initializers, mixing declarations with code, and other tricks. While
 214 it may be possible to use other compilers, they must be somewhat
 215 modern and could require extending support to conditionally remove
 216 GCC-specific extensions.
 217
 218 You'll also need:
 219
 220 - make
 221 - libtool
 222 - pkg-config >= 0.23 (or compatible)
 223
 224 Additionally, for building from git:
 225
 226 - autoconf >= 2.69
 227 - automake >= 1.14
 228 - texinfo >= 5.0
 229
 230 USB-based adapters depend on libusb-1.0. A compatible implementation, such as
 231 FreeBSD's, additionally needs the corresponding .pc files.
 232
 233 USB-Blaster, ASIX Presto and OpenJTAG interface adapter
 234 drivers need:
 235   - libftdi: http://www.intra2net.com/en/developer/libftdi/index.php
 236
 237 CMSIS-DAP support needs HIDAPI library.
 238
 239 Permissions delegation
 240 ----------------------
 241
 242 Running OpenOCD with root/administrative permissions is strongly
 243 discouraged for security reasons.
 244
 245 For USB devices on GNU/Linux you should use the contrib/60-openocd.rules
 246 file. It probably belongs somewhere in /etc/udev/rules.d, but
 247 consult your operating system documentation to be sure. Do not forget
 248 to add yourself to the "plugdev" group.
 249
 250 For parallel port adapters on GNU/Linux and FreeBSD please change your
 251 "ppdev" (parport* or ppi*) device node permissions accordingly.
 252
 253 For parport adapters on Windows you need to run install_giveio.bat
 254 (it's also possible to use "ioperm" with Cygwin instead) to give
 255 ordinary users permissions for accessing the "LPT" registers directly.
 256
 257 Compiling OpenOCD
 258 -----------------
 259
 260 To build OpenOCD, use the following sequence of commands:
 261
 262   ./bootstrap (when building from the git repository)
 263   ./configure [options]
 264   make
 265   sudo make install
 266
 267 The 'configure' step generates the Makefiles required to build
 268 OpenOCD, usually with one or more options provided to it. The first
 269 'make' step will build OpenOCD and place the final executable in
 270 './src/'. The final (optional) step, ``make install'', places all of
 271 the files in the required location.
 272
 273 To see the list of all the supported options, run
 274   ./configure --help
 275
 276 Cross-compiling Options
 277 -----------------------
 278
 279 Cross-compiling is supported the standard autotools way, you just need
 280 to specify the cross-compiling target triplet in the --host option,
 281 e.g. for cross-building for Windows 32-bit with MinGW on Debian:
 282
 283   ./configure --host=i686-w64-mingw32 [options]
 284
 285 To make pkg-config work nicely for cross-compiling, you might need an
 286 additional wrapper script as described at
 287
 288   https://autotools.io/pkgconfig/cross-compiling.html
 289
 290 This is needed to tell pkg-config where to look for the target
 291 libraries that OpenOCD depends on. Alternatively, you can specify
 292 *_CFLAGS and *_LIBS environment variables directly, see "./configure
 293 --help" for the details.
 294
 295 For a more or less complete script that does all this for you, see
 296
 297   contrib/cross-build.sh
 298
 299 Parallel Port Dongles
 300 ---------------------
 301
 302 If you want to access the parallel port using the PPDEV interface you
 303 have to specify both --enable-parport AND --enable-parport-ppdev, since
 304 the later option is an option to the parport driver.
 305
 306 The same is true for the --enable-parport-giveio option, you have to
 307 use both the --enable-parport AND the --enable-parport-giveio option
 308 if you want to use giveio instead of ioperm parallel port access
 309 method.
 310
 311
 312 ==========================
 313 Obtaining OpenOCD From GIT
 314 ==========================
 315
 316 You can download the current GIT version with a GIT client of your
 317 choice from the main repository:
 318
 319    git://git.code.sf.net/p/openocd/code
 320
 321 You may prefer to use a mirror:
 322
 323    http://repo.or.cz/r/openocd.git
 324    git://repo.or.cz/openocd.git
 325
 326 Using the GIT command line client, you might use the following command
 327 to set up a local copy of the current repository (make sure there is no
 328 directory called "openocd" in the current directory):
 329
 330    git clone git://git.code.sf.net/p/openocd/code openocd
 331
 332 Then you can update that at your convenience using
 333
 334    git pull
 335
 336 There is also a gitweb interface, which you can use either to browse
 337 the repository or to download arbitrary snapshots using HTTP:
 338
 339    http://repo.or.cz/w/openocd.git
 340
 341 Snapshots are compressed tarballs of the source tree, about 1.3 MBytes
 342 each at this writing.