diff options
Diffstat (limited to 'doc/openocd.texi')
| -rw-r--r-- | doc/openocd.texi | 1653 |
1 files changed, 1653 insertions, 0 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi new file mode 100644 index 0000000..0f5bd91 --- /dev/null +++ b/doc/openocd.texi @@ -0,0 +1,1653 @@ +\input texinfo @c -*-texinfo-*- +@c %**start of header +@setfilename openocd.info +@settitle Open On-Chip Debugger (openocd) +@c %**end of header + +@titlepage +@title Open On-Chip Debugger (openocd) +@page +@vskip 0pt plus 1filll +@end titlepage + +@contents + +@node Top, About, , (dir) +@top OpenOCD + +The Manual always document the latest version of OpenOCD available from SVN. + +@menu +* About:: About Openocd. +* Developers:: +* Building:: Building Openocd +* Running:: Running Openocd +* Configuration:: Openocd Configuration. +* Commands:: Openocd Commands +* Sample Scripts:: Sample Target Scripts +* FAQ:: Frequently Asked Questions +* License:: GNU Free Documentation License +* Index:: Main index. +@end menu + +@node About +@unnumbered About +@cindex about + +The Open On-Chip Debugger (openocd) aims to provide debugging, in-system programming +and boundary-scan testing for embedded target devices. The targets are interfaced +using JTAG (IEEE 1149.1) compliant hardware, but this may be extended to other +connection types in the future. + +Openocd currently supports Wiggler (clones), FTDI FT2232 based JTAG interfaces, the +Amontec JTAG Accelerator, and the Gateworks GW1602. It allows ARM7 (ARM7TDMI and ARM720t), +ARM9 (ARM920t, ARM922t, ARM926ej--s, ARM966e--s), XScale (PXA25x, IXP42x) and +Cortex-M3 (Luminary Stellaris LM3 and ST STM32) based cores to be debugged. + +Flash writing is supported for external CFI compatible flashes (Intel and AMD/Spansion +command set) and several internal flashes (LPC2000, AT91SAM7, STR7x, STR9x, LM3 +and STM32x). Preliminary support for using the LPC3180's NAND flash controller is included. + +@node Developers +@chapter Developers +@cindex developers + +Openocd has been created by Dominic Rath as part of a diploma thesis written at the +University of Applied Sciences Augsburg (@uref{http://www.fh-augsburg.de}). +Others interested in improving the state of free and open debug and testing technology +are welcome to participate. + +Other developers have contributed support for additional targets and flashes as well +as numerous bugfixes and enhancements. See the AUTHORS file for regular contributors. + +@node Building +@chapter Building +@cindex building openocd + +You can download the current SVN version with SVN client of your choice from the +following repositories: + + (@uref{svn://svn.berlios.de/openocd/trunk} + +or + + (@uref{http://svn.berlios.de/svnroot/repos/openocd/trunk} + +Using the SVN command line client, you could use the following command to fetch the +latest version (make sure there is no (non-svn) directory called "openocd" in the +current directory): + +@smallexample + svn checkout svn://svn.berlios.de/openocd/trunk +@end smallexample + +Building the OpenOCD requires a recent version of the GNU autotools. +On my build system, I'm using autoconf 2.13 and automake 1.9. For building on Windows, +you have to use Cygwin. Make sure that your @env{PATH} environment variable contains no +other locations with Unix utils (like UnxUtils) - these can't handle the Cygwin +paths, resulting in obscure dependency errors (This is an observation I've gathered +from the logs of one user - correct me if I'm wrong). + +You further need the appropriate driver files, if you want to build support for +a FTDI FT2232 based interface: +@itemize @bullet +@item @b{ftdi2232} libftdi ((@uref{http://www.intra2net.com/opensource/ftdi/}) +@item @b{ftd2xx} libftd2xx ((@uref{http://www.ftdichip.com/Drivers/D2XX.htm}) +@item When using the Amontec JTAGkey, you have to get the drivers from the Amontec +homepage (@uref{www.amontec.com}), as the JTAGkey uses a non-standard VID/PID. +@end itemize + +Please note that the ftdi2232 variant (using libftdi) isn't supported under Cygwin. +You have to use the ftd2xx variant (using FTDI's D2XX) on Cygwin. + +In general, the D2XX driver provides superior performance (several times as fast), +but has the draw-back of being binary-only - though that isn't as worse, as it isn't +a kernel module, only a user space library. + +To build OpenOCD (on both Linux and Cygwin), use the following commands: +@smallexample + ./bootstrap +@end smallexample +Bootstrap generates the configure script, and prepares building on your system. +@smallexample + ./configure +@end smallexample +Configure generates the Makefiles used to build OpenOCD +@smallexample + make +@end smallexample +Make builds the OpenOCD, and places the final executable in ./src/ + +The configure script takes several options, specifying which JTAG interfaces +should be included: + +@itemize @bullet +@item +--enable-parport +@item +--enable-parport_ppdev +@item +--enable-amtjtagaccel +@item +--enable-ft2232_ftd2xx +@footnote{Using the latest D2XX drivers from FTDI and following their installation +instructions, I had to use @option{--enable-ft2232_libftd2xx} for the OpenOCD to +build properly} +@item +--enable-ft2232_libftdi +@item +--with-ftd2xx=/path/to/d2xx/ +@end itemize + +If you want to access the parallel port using the PPDEV interface you have to specify +both the @option{--enable-parport} AND the @option{--enable-parport_ppdev} option since +the @option{--enable-parport_ppdev} option actually is an option to the parport driver +(see (@uref{http://forum.sparkfun.com/viewtopic.php?t=3795} for more info). + +Cygwin users have to specify the location of the FTDI D2XX package. This should be an +absolute path containing no spaces. + +Linux users should copy the various parts of the D2XX package to the appropriate +locations, i.e. /usr/include, /usr/lib. + +@node Running +@chapter Running +@cindex running openocd +The OpenOCD runs as a daemon, waiting for connections from clients (Telnet or GDB). +Run with @option{--help} or @option{-h} to view the available command line arguments. + +It reads its configuration by default from the file openocd.cfg located in the current +working directory. This may be overwritten with the @option{-f <configfile>} command line +switch. + +To enable debug output (when reporting problems or working on OpenOCD itself), use +the @option{-d} command line switch. This sets the debug_level to "3", outputting +the most information, including debug messages. The default setting is "2", outputting +only informational messages, warnings and errors. You can also change this setting +from within a telnet or gdb session (@option{debug_level <n>}). + +You can redirect all output from the daemon to a file using the @option{-l <logfile>} switch. + +@node Configuration +@chapter Configuration +@cindex configuration +The Open On-Chip Debugger (OpenOCD) runs as a daemon, and reads it current configuration +by default from the file openocd.cfg in the current directory. A different configuration +file can be specified with the @option{-f <conf.file>} given at the openocd command line. + +The configuration file is used to specify on which ports the daemon listens for new +connections, the JTAG interface used to connect to the target, the layout of the JTAG +chain, the targets that should be debugged, and connected flashes. + +@section Daemon configuration + +@itemize @bullet +@item @b{telnet_port} <@var{number}> +@cindex telnet_port +Port on which to listen for incoming telnet connections +@item @b{gdb_port} <@var{number}> +@cindex gdb_port +First port on which to listen for incoming GDB connections. The GDB port for the +first target will be gdb_port, the second target will listen on gdb_port + 1, and so on. +@item @b{daemon_startup} <@var{mode}> either @samp{attach} or @samp{reset} +@cindex daemon_startup +Tells the OpenOCD whether it should reset the target when the daemon is launched, or +if it should just attach to the target. +@end itemize + +@section JTAG interface configuration + +@itemize @bullet +@item @b{interface} <@var{name}> +@cindex interface +Use the interface driver <@var{name}> to connect to the target. Currently supported +interfaces are +@itemize @minus +@item parport +PC parallel port bit-banging (Wigglers, PLD download cable, ...) +@end itemize +@itemize @minus +@item amt_jtagaccel +Amontec Chameleon in its JTAG Accelerator configuration connected to a PC's EPP +mode parallel port +@end itemize +@itemize @minus +@item ft2232 +FTDI FT2232 based devices using either the open-source libftdi or the binary only +FTD2XX driver. The FTD2XX is superior in performance, but not available on every +platform. The libftdi uses libusb, and should be portable to all systems that provide +libusb. +@end itemize +@itemize @minus +@item ep93xx +Cirrus Logic EP93xx based single-board computer bit-banging (in development) +@end itemize +@end itemize + +@itemize @bullet +@item @b{jtag_speed} <@var{number}> +@cindex jtag_speed +Limit the maximum speed of the JTAG interface. Usually, a value of zero means maximum +speed. The actual effect of this option depends on the JTAG interface used. + +@item @b{reset_config} <@var{signals}> [@var{combination}] [@var{trst_type}] [@var{srst_type}] +@cindex reset_config +The configuration of the reset signals available on the JTAG interface AND the target. +If the JTAG interface provides SRST, but the target doesn't connect that signal properly, +then OpenOCD can't use it. <@var{signals}> can be @samp{none}, @samp{trst_only}, +@samp{srst_only} or @samp{trst_and_srst}. +[@var{combination}] is an optional value specifying broken reset signal implementations. +@samp{srst_pulls_trst} states that the testlogic is reset together with the reset of +the system (e.g. Philips LPC2000, "broken" board layout), @samp{trst_pulls_srst} says +that the system is reset together with the test logic (only hypothetical, I haven't +seen hardware with such a bug, and can be worked around). + +The [@var{trst_type}] and [@var{srst_type}] parameters allow the driver type of the +reset lines to be specified. Possible values are @samp{trst_push_pull} (default) +and @samp{trst_open_drain} for the test reset signal, and @samp{srst_open_drain} +(default) and @samp{srst_push_pull} for the system reset. These values only affect +JTAG interfaces with support for different drivers, like the Amontec JTAGkey and JTAGAccelerator. + +@item @b{jtag_device} <@var{IR length}> <@var{IR capture}> <@var{IR mask}> <@var{IDCODE instruction}> +@cindex jtag_device +Describes the devices that form the JTAG daisy chain, with the first device being +the one closest to TDO. The parameters are the length of the instruction register +(4 for all ARM7/9s), the value captured during Capture-IR (0x1 for ARM7/9), and a mask +of bits that should be validated when doing IR scans (all four bits (0xf) for ARM7/9). +The IDCODE instruction will in future be used to query devices for their JTAG +identification code. This line is the same for all ARM7 and ARM9 devices. +Other devices, like CPLDs, require different parameters. An example configuration +line for a Xilinx XC9500 CPLD would look like this: +@smallexample +jtag_device 8 0x01 0x0e3 0xfe +@end smallexample +The instruction register (IR) is 8 bits long, during Capture-IR 0x01 is loaded into +the IR, but only bits 0-1 and 5-7 should be checked, the others (2-4) might vary. +The IDCODE instruction is 0xfe. + +@item @b{jtag_nsrst_delay} <@var{ms}> +@cindex jtag_nsrst_delay +How long (in miliseconds) the OpenOCD should wait after deasserting nSRST before +starting new JTAG operations. +@item @b{jtag_ntrst_delay} <@var{ms}> +@cindex jtag_ntrst_delay +How long (in miliseconds) the OpenOCD should wait after deasserting nTRST before +starting new JTAG operations. + +The jtag_n[st]rst_delay options are useful if reset circuitry (like a reset supervisor, +or on-chip features) keep a reset line asserted for some time after the external reset +got deasserted. +@end itemize + +@section parport options + +@itemize @bullet +@item @b{parport_port} <@var{number}> +@cindex parport_port +Either the address of the I/O port (default: 0x378 for LPT1) or the number of +the @file{/dev/parport} device + +When using PPDEV to access the parallel port, use the number of the parallel port: +@option{parport_port 0} (the default). If @option{parport_port 0x378} is specified +you may encounter a problem. +@item @b{parport_cable} <@var{name}> +@cindex parport_cable +The layout of the parallel port cable used to connect to the target. +Currently supported cables are +@itemize @minus +@item wiggler +@cindex wiggler +Original Wiggler layout, also supported by several clones, such +as the Olimex ARM-JTAG +@item old_amt_wiggler +@cindex old_amt_wiggler +The Wiggler configuration that comes with Amontec's Chameleon Programmer. The new +version available from the website uses the original Wiggler layout ('@var{wiggler}') +@item chameleon +@cindex chameleon +Describes the connection of the Amontec Chameleon's CPLD when operated in +configuration mode. This is only used to program the Chameleon itself, not +a connected target. +@item dlc5 +@cindex dlc5 +Xilinx Parallel cable III. +@item triton +@cindex triton +The parallel port adapter found on the 'Karo Triton 1 Development Board'. +This is also the layout used by the HollyGates design +(see @uref{http://www.lartmaker.nl/projects/jtag/}). +@item flashlink +@cindex flashlink +ST Parallel cable. +@end itemize +@end itemize + +@section amt_jtagaccel options +@itemize @bullet +@item @b{parport_port} <@var{number}> +@cindex parport_port +Either the address of the I/O port (default: 0x378 for LPT1) or the number of the +@file{/dev/parport} device +@end itemize +@section ft2232 options + +@itemize @bullet +@item @b{ft2232_device_desc} <@var{description}> +@cindex ft2232_device_desc +The USB device description of the FTDI FT2232 device. If not specified, the FTDI +default value is used. This setting is only valid if compiled with FTD2XX support. +@item @b{ft2232_layout} <@var{name}> +@cindex ft2232_layout +The layout of the FT2232 GPIO signals used to control output-enables and reset +signals. Valid layouts are +@itemize @minus +@item usbjtag +The "USBJTAG-1" layout described in the original OpenOCD diploma thesis +@item jtagkey +Amontec JTAGkey and JTAGkey-tiny +@item signalyzer +Signalyzer +@item olimex-jtag +Olimex ARM-USB-OCD +@item m5960 +American Microsystems M5960 +@item evb_lm3s811 +Luminary Micro EVB_LM3S811 as a JTAG interface (not onboard processor), no TRST or +SRST signals on external connector +@item comstick +Hitex STR9 comstick +@end itemize + +@item @b{ft2232_vid_pid} <@var{vid}> <@var{pid}> +The vendor ID and product ID of the FTDI FT2232 device. If not specified, the FTDI +default values are used. This command is not available on Windows. +@item @b{ft2232_latency} <@var{ms}> +On some systems using ft2232 based JTAG interfaces the FT_Read function call in +ft2232_read() fails to return the expected number of bytes. This can be caused by +USB communication delays and has proved hard to reproduce and debug. Setting the +FT2232 latency timer to a larger value increases delays for short USB packages but it +also reduces the risk of timeouts before receiving the expected number of bytes. +The OpenOCD default value is 2 and for some systems a value of 10 has proved useful. +@end itemize + +@section ep93xx options +@cindex ep93xx options +Currently, there are no options available for the ep93xx interface. + +@page +@section Target configuration + +@itemize @bullet +@item @b{target} <@var{type}> <@var{endianess}> <@var{reset_mode}> <@var{JTAG pos}> +<@var{variant}> +@cindex target +Defines a target that should be debugged. Currently supported types are: +@itemize @minus +@item arm7tdmi +@item arm720t +@item arm9tdmi +@item arm920t +@item arm922t +@item arm926ejs +@item arm966e +@item cortex_m3 +@item xscale +@end itemize + +If you want to use a target board that is not on this list, see Adding a new +target board + +Endianess may be @option{little} or @option{big}. + +The reset_mode specifies what should happen to the target when a reset occurs: +@itemize @minus +@item reset_halt +@cindex reset_halt +Immediately request a target halt after reset. This allows targets to be debugged +from the very first instruction. This is only possible with targets and JTAG +interfaces that correctly implement the reset signals. +@item reset_init +@cindex reset_init +Similar to @option{reset_halt}, but executes the script file defined to handle the +'reset' event for the target. Like @option{reset_halt} this only works with +correct reset implementations. +@item reset_run +@cindex reset_run +Simply let the target run after a reset. +@item run_and_halt +@cindex run_and_halt +Let the target run for some time (default: 1s), and then request halt. +@item run_and_init +@cindex run_and_init +A combination of @option{reset_init} and @option{run_and_halt}. The target is allowed +to run for some time, then halted, and the @option{reset} event script is executed. +@end itemize + +On JTAG interfaces / targets where system reset and test-logic reset can't be driven +completely independent (like the LPC2000 series), or where the JTAG interface is +unavailable for some time during startup (like the STR7 series), you can't use +@option{reset_halt} or @option{reset_init}. + +@item @b{target_script} <@var{target#}> <@var{event}> <@var{script_file}> +@cindex target_script +Event is either @var{reset} or @var{post_halt} or @var{pre_resume}. +TODO: describe exact semantic of events +@item @b{run_and_halt_time} <@var{target#}> <@var{time_in_ms}> +@cindex run_and_halt_time +The amount of time the debugger should wait after releasing reset before it asserts +a debug request. This is used by the @option{run_and_halt} and @option{run_and_init} +reset modes. +@item @b{working_area} <@var{target#}> <@var{address}> <@var{size}> +<@var{backup}|@var{nobackup}> +@cindex working_area +Specifies a working area for the debugger to use. This may be used to speed-up +downloads to target memory and flash operations, or to perform otherwise unavailable +operations (some coprocessor operations on ARM7/9 systems, for example). The last +parameter decides whether the memory should be preserved <@var{backup}>. If possible, use +a working_area that doesn't need to be backed up, as that slows down operation. +@end itemize + +@subsection arm7tdmi options +@cindex arm7tdmi options +target arm7tdmi <@var{endianess}> <@var{reset_mode}> <@var{jtag#}> +The arm7tdmi target definition requires at least one additional argument, specifying +the position of the target in the JTAG daisy-chain. The first JTAG device is number 0. +The optional [@var{variant}] parameter has been removed in recent versions. +The correct feature set is determined at runtime. + +@subsection arm720t options +@cindex arm720t options +ARM720t options are similar to ARM7TDMI options. + +@subsection arm9tdmi options +@cindex arm9tdmi options +ARM9TDMI options are similar to ARM7TDMI options. Supported variants are +@option{arm920t}, @option{arm922t} and @option{arm940t}. +This enables the hardware single-stepping support found on these cores. + +@subsection arm920t options +@cindex arm920t options +ARM920t options are similar to ARM9TDMI options. + +@subsection arm966e options +@cindex arm966e options +ARM966e options are similar to ARM9TDMI options. + +@subsection xscale options +@cindex xscale options +Supported variants are @option{ixp42x}, @option{ixp45x}, @option{ixp46x}, +@option{pxa250}, @option{pxa255}, @option{pxa26x}. + +@section Flash configuration +@cindex Flash configuration + +@itemize @bullet +@item @b{flash bank} <@var{driver}> <@var{base}> <@var{size}> <@var{chip_width}> +<@var{bus_width}> <@var{target#}> [@var{driver_options ...}] +@cindex flash bank +Configures a flash bank at <@var{base}> of <@var{size}> bytes and <@var{chip_width}> +and <@var{bus_width}> bytes using the selected flash <driver>. + +@item @b{flash autoerase} <@option{on}|@option{off}> +@cindex flash autoerase +auto erase flash banks prior to writing. Currently only works when using +@option{flash write_image} command. Default is @option{off}. +@end itemize + +@subsection lpc2000 options +@cindex lpc2000 options + +@b{flash bank lpc2000} <@var{base}> <@var{size}> 0 0 <@var{target#}> <@var{variant}> +<@var{clock}> [@var{calc_checksum}] +LPC flashes don't require the chip and bus width to be specified. Additional +parameters are the <@var{variant}>, which may be @var{lpc2000_v1} (older LPC21xx and LPC22xx) +or @var{lpc2000_v2} (LPC213x, LPC214x, LPC210[123], LPC23xx and LPC24xx), the number +of the target this flash belongs to (first is 0), the frequency at which the core +is currently running (in kHz - must be an integral number), and the optional keyword +@var{calc_checksum}, telling the driver to calculate a valid checksum for the exception +vector table. + +@subsection cfi options +@cindex cfi options + +@b{flash bank cfi} <@var{base}> <@var{size}> <@var{chip_width}> <@var{bus_width}> +<@var{target#}> +CFI flashes require the number of the target they're connected to as an additional +argument. The CFI driver makes use of a working area (specified for the target) +to significantly speed up operation. + +@subsection at91sam7 options +@cindex at91sam7 options + +@b{flash bank at91sam7} 0 0 0 0 <@var{target#>}> +AT91SAM7 flashes only require the target#, all other values are looked up after +reading the chip-id and type. + +@subsection str7 options +@cindex str7 options + +@b{flash bank str7x} <@var{base}> <@var{size}> 0 0 <@var{target#}> <@var{variant}> +variant can be either STR71x, STR73x or STR75x. + +@subsection str9 options +@cindex str9 options + +@b{flash bank str9x} <@var{base}> <@var{size}> 0 0 <@var{target#}> +The str9 needs the flash controller to be configured prior to Flash programming, eg. +@smallexample +str9x flash_config 0 4 2 0 0x80000 +@end smallexample +This will setup the BBSR, NBBSR, BBADR and NBBADR registers respectively. + +@subsection str9 options (str9xpec driver) + +@b{flash bank str9xpec} <@var{base}> <@var{size}> 0 0 <@var{target#}> +Before using the flash commands the turbo mode will need enabling using str9xpec +@option{enable_turbo} <@var{num>.} + +Only use this driver for locking/unlocking the device or configuring the option bytes. +Use the standard str9 driver for programming. + +@subsection stellaris (LM3Sxxx) options +@cindex stellaris (LM3Sxxx) options + +@b{flash bank stellaris} <@var{base}> <@var{size}> 0 0 <@var{target#}> +stellaris flash plugin only require the target#. + +@subsection stm32x options +@cindex stm32x options + +@b{flash bank stm32x} <@var{base}> <@var{size}> 0 0 <@var{target#}> +stm32x flash plugin only require the target#. + +@node Commands +@chapter Commands +@cindex commands + +The Open On-Chip Debugger (OpenOCD) allows user interaction through a telnet interface +(default: port 4444) and a GDB server (default: port 3333). The command line interpreter +is available from both the telnet interface and a GDB session. To issue commands to the +interpreter from within a GDB session, use the @option{monitor} command, e.g. use +@option{monitor poll} to issue the @option{poll} command. All output is relayed through the +GDB session. + +@section Daemon + +@itemize @bullet +@item @b{sleep} <@var{msec}> +@cindex sleep +Wait for n milliseconds before resuming. Useful in connection with script files +(@var{script} command and @var{target_script} configuration). + +@item @b{shutdown} +@cindex shutdown +Close the OpenOCD daemon, disconnecting all clients (GDB, Telnet). + +@item @b{debug_level} [@var{n}] +@cindex debug_level +Display or adjust debug level to n<0-3> + +@item @b{log_output} <@var{file}> +@cindex log_output +Redirect logging to <file> (default: stderr) + +@item @b{script} <@var{file}> +@cindex script +Execute commands from <file> + +@end itemize + +@subsection Target state handling +@itemize @bullet +@item @b{poll} [@option{on}|@option{off}] +@cindex poll +Poll the target for its current state. If the target is in debug mode, architecture +specific information about the current state are printed. An optional parameter +allows continuous polling to be enabled and disabled. + +@item @b{halt} +@cindex halt +Send a halt request to the target. The debugger signals the debug request, +and waits for the target to enter debug mode. + +@item @b{resume} [@var{address}] +@cindex resume +Resume the target at its current code position, or at an optional address. + +@item @b{step} [@var{address}] +@cindex step +Single-step the target at its current code position, or at an optional address. + +@item @b{reset} [@option{run}|@option{halt}|@option{init}|@option{run_and_halt} +|@option{run_and_init}] +@cindex reset +Do a hard-reset. The optional parameter specifies what should happen after the reset. +This optional parameter overwrites the setting specified in the configuration file, +making the new behaviour the default for the @option{reset} command. +@itemize @minus +@item run +@cindex reset run +Let the target run. +@item halt +@cindex reset halt +Immediately halt the target (works only with certain configurations). +@item init +@cindex reset init +Immediately halt the target, and execute the reset script (works only with certain +configurations) +@item run_and_halt +@cindex reset run_and_halt +Let the target run for a certain amount of time, then request a halt. +@item run_and_init +@cindex reset run_and_init +Let the target run for a certain amount of time, then request a halt. Execute the +reset script once the target entered debug mode. +@end itemize +@end itemize + +@subsection Memory access commands +These commands allow accesses of a specific size to the memory system: +@itemize @bullet +@item @b{mdw} <@var{addr}> [@var{count}] +@cindex mdw +display memory words +@item @b{mdh} <@var{addr}> [@var{count}] +@cindex mdh +display memory half-words +@item @b{mdb} <@var{addr}> [@var{count}] +@cindex mdb +display memory bytes +@item @b{mww} <@var{addr}> <@var{value}> +@cindex mww +write memory word +@item @b{mwh} <@var{addr}> <@var{value}> +@cindex mwh +write memory half-word +@item @b{mwb} <@var{addr}> <@var{value}> +@cindex mwb +write memory byte + +@item @b{load_image} <@var{file}> <@var{address}> [@option{bin}|@option{ihex}|@option{elf}] +@cindex load_image +Load image <@var{file}> to target memory at <@var{address}> +@item @b{dump_image} <@var{file}> <@var{address}> <@var{size}> +@cindex dump_image +Dump <@var{size}> bytes of target memory starting at <@var{address}> to a +(binary) <@var{file}>. +@item @b{verify_image} <@var{file}> <@var{address}> [@option{bin}|@option{ihex}|@option{elf}] +@cindex verify_image +Verify <@var{file}> to target memory starting at <@var{address}>. +@item @b{load_binary} <@var{file}> <@var{address}> [DEPRECATED] +@cindex load_binary +Load binary <@var{file}> to target memory at <@var{address}> +@item @b{dump_binary} <@var{file}> <@var{address}> <@var{size}> [DEPRECATED] +@cindex dump_binary +Dump <@var{size}> bytes of target memory starting at <@var{address}> to a +(binary) <@var{file}>. +@end itemize + +@subsection Flash commands +@cindex Flash commands +@itemize @bullet +@item @b{flash banks} +@cindex flash banks +List configured flash banks +@item @b{flash info} <@var{num}> +@cindex flash info +Print info about flash bank <@option{num}> +@item @b{flash probe} <@var{num}> +@cindex flash probe +Identify the flash, or validate the parameters of the configured flash. Operation +depends on the flash type. +@item @b{flash erase_check} <@var{num}> +@cindex flash erase_check +Check erase state of sectors in flash bank <@var{num}>. This is the only operation that +updates the erase state information displayed by @option{flash info}. That means you have +to issue an @option{erase_check} command after erasing or programming the device to get +updated information. +@item @b{flash protect_check} <@var{num}> +@cindex flash protect_check +Check protection state of sectors in flash bank <num>. +@item @b{flash erase} <@var{num}> <@var{first}> <@var{last}> +@cindex flash erase +Erase sectors at bank <@var{num}>, starting at sector <@var{first}> up to and including +<@var{last}>. Sector numbering starts at 0. Depending on the flash type, erasing might +require the protection to be disabled first (e.g. Intel Advanced Bootblock flash using +the CFI driver). +@item @b{flash write} <@var{num}> <@var{file}> <@var{offset}> [DEPRECATED] +@cindex flash write +Write the binary <@var{file}> to flash bank <@var{num}>, starting at <@var{offset}> +bytes from the beginning of the bank. This command was replaced by the new command +@option{flash write_binary} using the same syntax. +@item @b{flash write_binary} <@var{num}> <@var{file}> <@var{offset}> +@cindex flash write_binary +Write the binary <@var{file}> to flash bank <@var{num}>, starting at +<@option{offset}> bytes from the beginning of the bank. +@item @b{flash write_image} <@var{file}> [@var{offset}] [@var{type}] +@cindex flash write_image +Write the image <@var{file}> to the current target's flash bank(s). A relocation +[@var{offset}] can be specified and the file [@var{type}] can be specified +explicitly as @option{bin} (binary), @option{ihex} (Intel hex), @option{elf} +(ELF file) or @option{s19} (Motorola s19). +@item @b{flash protect} <@var{num}> <@var{first}> <@var{last}> <@option{on}|@option{off}> +@cindex flash protect +Enable (@var{on}) or disable (@var{off}) protection of flash sectors <@var{first}> to +<@var{last}> of @option{flash bank} <@var{num}>. +@item @b{flash auto_erase} <@var{on}|@var{off}> +@cindex flash auto_erase +Enable (@option{on}) to erase flash banks prior to writing using the flash @option{write_image} command +only. Default is (@option{off}), flash banks have to be erased using @option{flash erase} command. +@end itemize + +@page +@section Target Specific Commands +@cindex Target Specific Commands + +@subsection AT91SAM7 specific commands +@cindex AT91SAM7 specific commands +The flash configuration is deduced from the chip identification register. The flash +controller handles erases automatically on a page (128/265 byte) basis so erase is +not necessary for flash programming. AT91SAM7 processors with less than 512K flash +only have a single flash bank embedded on chip. AT91SAM7xx512 have two flash planes +that can be erased separatly.Only an EraseAll command is supported by the controller +for each flash plane and this is called with +@itemize @bullet +@item @b{flash erase} <@var{num}> @var{first_plane} @var{last_plane} +bulk erase flash planes first_plane to last_plane. +@item @b{at91sam7 gpnvm} <@var{num}> <@var{bit}> <@option{set}|@option{clear}> +@cindex at91sam7 gpnvm +set or clear a gpnvm bit for the processor +@end itemize + +@subsection STR9 specific commands +@cindex STR9 specific commands +These are flash specific commands when using the str9xpec driver. +@itemize @bullet +@item @b{str9xpec enable_turbo} <@var{num}> +@cindex str9xpec enable_turbo +enable turbo mode, simply this will remove the str9 from the chain and talk +directly to the embedded flash controller. +@item @b{str9xpec disable_turbo} <@var{num}> +@cindex str9xpec disable_turbo +restore the str9 into jtag chain. +@item @b{str9xpec lock} <@var{num}> +@cindex str9xpec lock +lock str9 device. The str9 will only respond to an unlock command that will +erase the device. +@item @b{str9xpec unlock} <@var{num}> +@cindex str9xpec unlock +unlock str9 device. +@item @b{str9xpec options_read} <@var{num}> +@cindex str9xpec options_read +read str9 option bytes. +@item @b{str9xpec options_write} <@var{num}> +@cindex str9xpec options_write +write str9 option bytes. +@end itemize + +@subsection STR9 configuration +@cindex STR9 configuration +@itemize @bullet +@item @b{str9x flash_config} <@var{bank}> <@var{BBSR}> <@var{NBBSR}> +<@var{BBADR}> <@var{NBBADR}> +@cindex str9x flash_config +Configure str9 flash controller. +@smallexample +eg. str9x flash_config 0 4 2 0 0x80000 +This will setup +BBSR - Boot Bank Size register +NBBSR - Non Boot Bank Size register +BBADR - Boot Bank Start Address register +NBBADR - Boot Bank Start Address register +@end smallexample +@end itemize + +@subsection STR9 option byte configuration +@cindex STR9 option byte configuration +@itemize @bullet +@item @b{str9xpec options_cmap} <@var{num}> <@option{bank0}|@option{bank1}> +@cindex str9xpec options_cmap +configure str9 boot bank. +@item @b{str9xpec options_lvdthd} <@var{num}> <@option{2.4v}|@option{2.7v}> +@cindex str9xpec options_lvdthd +configure str9 lvd threshold. +@item @b{str9xpec options_lvdsel} <@var{num}> <@option{vdd}|@option{vdd_vddq}> +@cindex str9xpec options_lvdsel +configure str9 lvd source. +@item @b{str9xpec options_lvdwarn} <@var{bank}> <@option{vdd}|@option{vdd_vddq}> +@cindex str9xpec options_lvdwarn +configure str9 lvd reset warning source. +@end itemize + +@subsection STM32x specific commands +@cindex STM32x specific commands + +These are flash specific commands when using the stm32x driver. +@itemize @bullet +@item @b{stm32x lock} <@var{num}> +@cindex stm32x lock +lock stm32 device. +@item @b{stm32x unlock} <@var{num}> +@cindex stm32x unlock +unlock stm32 device. +@item @b{stm32x options_read} <@var{num}> +@cindex stm32x options_read +read stm32 option bytes. +@item @b{stm32x options_write} <@var{num}> <@option{SWWDG}|@option{HWWDG}> +<@option{RSTSTNDBY}|@option{NORSTSTNDBY}> <@option{RSTSTOP}|@option{NORSTSTOP}> +@cindex stm32x options_write +write stm32 option bytes. +@item @b{stm32x mass_erase} <@var{num}> +@cindex stm32x mass_erase +mass erase flash memory. +@end itemize + +@page +@section Arcitecture Specific Commands +@cindex Arcitecture Specific Commands + +@subsection ARMV4/5 specific commands +@cindex ARMV4/5 specific commands + +These commands are specific to ARM architecture v4 and v5, like all ARM7/9 systems +or Intel XScale (XScale isn't supported yet). +@itemize @bullet +@item @b{armv4_5 reg} +@cindex armv4_5 reg +Display a list of all banked core registers, fetching the current value from every +core mode if necessary. OpenOCD versions before rev. 60 didn't fetch the current +register value. +@item @b{armv4_5 core_mode} [@option{arm}|@option{thumb}] +@cindex armv4_5 core_mode +Displays the core_mode, optionally changing it to either ARM or Thumb mode. +The target is resumed in the currently set @option{core_mode}. +@end itemize + +@subsection ARM7/9 specific commands +@cindex ARM7/9 specific commands + +These commands are specific to ARM7 and ARM9 targets, like ARM7TDMI, ARM720t, +ARM920t or ARM926EJ-S. +@itemize @bullet +@item @b{arm7_9 sw_bkpts} <@option{enable}|@option{disable}> +@cindex arm7_9 sw_bkpts +Enable/disable use of software breakpoints. On ARMv4 systems, this reserves +one of the watchpoint registers to implement software breakpoints. Disabling +SW Bkpts frees that register again. +@item @b{arm7_9 force_hw_bkpts} <@option{enable}|@option{disable}> +@cindex arm7_9 force_hw_bkpts +When @option{force_hw_bkpts} is enabled, the @option{sw_bkpts} support is disabled, and all +breakpoints are turned into hardware breakpoints. +@item @b{arm7_9 dbgrq} <@option{enable}|@option{disable}> +@cindex arm7_9 dbgrq +Enable use of the DBGRQ bit to force entry into debug mode. This should be +safe for all but ARM7TDMI--S cores (like Philips LPC). +@item @b{arm7_9 fast_writes} <@option{enable}|@option{disable}> +@cindex arm7_9 fast_writes [DEPRECATED] +See @option{arm7_9 fast_memory_access} instead. +@item @b{arm7_9 fast_memory_access} <@option{enable}|@option{disable}> +@cindex arm7_9 fast_memory_access +Allow the OpenOCD to read and write memory without checking completion of +the operation. This provides a huge speed increase, especially with USB JTAG +cables (FT2232), but might be unsafe if used with targets running at a very low +speed, like the 32kHz startup clock of an AT91RM9200. +@item @b{arm7_9 dcc_downloads} <@option{enable}|@option{disable}> +@cindex arm7_9 dcc_downloads +Enable the use of the debug communications channel (DCC) to write larger (>128 byte) +amounts of memory. DCC downloads offer a huge speed increase, but might be potentially +unsafe, especially with targets running at a very low speed. This command was introduced +with OpenOCD rev. 60. +@end itemize + +@subsection ARM920T specific commands +@cindex ARM920T specific commands + +@itemize @bullet +@item @b{arm920t cache_info} +@cindex arm920t cache_info +Print information about the caches found. This allows you to see if your target +is a ARM920T (2x16kByte cache) or ARM922T (2x8kByte cache). +@item @b{arm920t md<bhw>_phys} <@var{addr}> [@var{count}] +@cindex arm920t md<bhw>_phys +Display memory at physical address addr. +@item @b{arm920t mw<bhw>_phys} <@var{addr}> <@var{value}> +@cindex arm920t mw<bhw>_phys +Write memory at physical address addr. +@item @b{arm920t read_cache} <@var{filename}> +@cindex arm920t read_cache +Dump the content of ICache and DCache to a file. +@item @b{arm920t read_mmu} <@var{filename}> +@cindex arm920t read_mmu +Dump the content of the ITLB and DTLB to a file. +@item @b{arm920t virt2phys} <@var{VA}> +@cindex arm920t virt2phys +Translate a virtual address to a physical address. +@end itemize + +@page +@section Debug commands +@cindex Debug commands +The following commands give direct access to the core, and are most likely +only useful while debugging the OpenOCD. +@itemize @bullet +@item @b{arm7_9 write_xpsr} <@var{32-bit value}> <@option{0=cpsr}, @option{1=spsr}> +@cindex arm7_9 write_xpsr +Immediately write either the current program status register (CPSR) or the saved +program status register (SPSR), without changing the register cache (as displayed +by the @option{reg} and @option{armv4_5 reg} commands). +@item @b{arm7_9 write_xpsr_im8} <@var{8-bit value}> <@var{rotate 4-bit}> +<@var{0=cpsr},@var{1=spsr}> +@cindex arm7_9 write_xpsr_im8 +Write the 8-bit value rotated right by 2*rotate bits, using an immediate write +operation (similar to @option{write_xpsr}). +@item @b{arm7_9 write_core_reg} <@var{num}> <@var{mode}> <@var{value}> +@cindex arm7_9 write_core_reg +Write a core register, without changing the register cache (as displayed by the +@option{reg} and @option{armv4_5 reg} commands). The <@var{mode}> argument takes the +encoding of the [M4:M0] bits of the PSR. +@end itemize + +@page +@section JTAG commands +@cindex JTAG commands +@itemize @bullet +@item @b{scan_chain} +@cindex scan_chain +Print current scan chain configuration. +@item @b{jtag_reset} +@cindex jtag_reset +Toggle reset lines <@var{trst}> <@var{srst}>. +@item @b{endstate} <@var{tap_state}> +@cindex endstate +Finish JTAG operations in <@var{tap_state}>. +@item @b{runtest} <@var{num_cycles}> +@cindex runtest +Move to Run-Test/Idle, and execute <@var{num_cycles}> +@item @b{statemove} [@var{tap_state}] +@cindex statemove +Move to current endstate or [@var{tap_state}] +@item @b{irscan} +@cindex irscan +Execute IR scan <@var{device}> <@var{instr}> [@var{dev2}] [@var{instr2}] ... +@item @b{drscan} +@cindex drscan +Execute DR scan <@var{device}> [@var{dev2}] [@var{var2}] ... +@item @b{verify_ircapture} +@cindex verify_ircapture +Verify value captured during Capture-IR <@option{enable}|@option{disable}> +@item @b{var} +@cindex var +Allocate, display or delete variable <@var{name}> [@var{num_fields}|@var{del}] [@var{size1}] ... +@item @b{field} +@cindex field +Display/modify variable field <@var{var}> <@var{field}> [@var{value}|@var{flip}] +@end itemize + +@node Sample Scripts +@chapter Sample Scripts +@cindex scripts + +This page will collect some script examples for different CPUs. + +The configuration script can be divided in the following section: +@itemize @bullet +@item deamon configuration +@item interface +@item jtag scan chain +@item target configuration +@item flash configuration +@end itemize + +Detailed information about each section can be found at OpenOCD configuration + +@section OMAP5912 Flash Debug +@cindex OMAP5912 Flash Debug +The following two scripts was used with an wiggler PP and and a TI OMAP5912 +dual core processor (@uref{http://www.ti.com}) on a OMAP5912 OSK board +@uref{(http://www.spectrumdigital.com}). +@subsection Openocd config +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface parport +parport_port 0x378 +parport_cable wiggler +jtag_speed 0 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 38 0x0 0x0 0x0 +jtag_device 4 0x1 0x0 0xe +jtag_device 8 0x0 0x0 0x0 + +#target configuration +daemon_startup reset + +#target <type> <endianness> <reset mode> <chainpos> <variant> +target arm926ejs little run_and_init 1 arm926ejs +target_script 0 reset omap5912_osk.init +run_and_halt_time 0 30 + +# omap5912 lcd frame buffer as working area +working_area 0 0x20000000 0x3e800 nobackup + +#flash bank <driver> <base> <size> <chip_width> <bus_width> +flash bank cfi 0x00000000 0x1000000 2 2 0 +@end smallexample + +@subsection Openocd init +@smallexample +# +# halt target +# +poll +sleep 1 +halt +wait_halt +# +# disable wdt +# +mww 0xfffec808 0x000000f5 +mww 0xfffec808 0x000000a0 + +mww 0xfffeb048 0x0000aaaa +sleep 500 +mww 0xfffeb048 0x00005555 +sleep 500 +# +# detect flash +# +flash probe 0 + +@end smallexample + +@section STR71x Script +@cindex STR71x Script +The following script was used with an Amontec JTAGkey and a STR710 / STR711 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +ft2232_vid_pid 0x0403 0xcff8 +jtag_speed 0 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst srst_pulls_trst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm7tdmi <endianness> <reset mode> <chainpos> <variant> +target arm7tdmi little run_and_halt 0 arm7tdmi +run_and_halt_time 0 30 + +working_area 0 0x2000C000 0x4000 nobackup + +#flash bank <driver> <base> <size> <chip_width> <bus_width> +flash bank str7x 0x40000000 0x00040000 0 0 0 STR71x +@end smallexample + +@section STR750 Script +@cindex STR750 Script +The following script was used with an Amontec JTAGkey and a STR750 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +ft2232_vid_pid 0x0403 0xcff8 +jtag_speed 19 + +#use combined on interfaces or targets that can't set TRST/SRST separately +#reset_config trst_and_srst srst_pulls_trst +reset_config trst_and_srst srst_pulls_trst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +#jtag nTRST and nSRST delay +jtag_nsrst_delay 500 +jtag_ntrst_delay 500 + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm7tdmi <reset mode> <chainpos> <endianness> <variant> +target arm7tdmi little run_and_halt 0 arm7tdmi +run_and_halt_time 0 30 + +working_area 0 0x40000000 0x4000 nobackup + +#flash bank <driver> <base> <size> <chip_width> <bus_width> +flash bank str7x 0x20000000 0x000040000 0 0 0 STR75x +@end smallexample + +@section STR912 Script +@cindex STR912 Script +The following script was used with an Amontec JTAGkey and a STR912 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +jtag_speed 1 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 8 0x1 0x1 0xfe +jtag_device 4 0x1 0xf 0xe +jtag_device 5 0x1 0x1 0x1e + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm966e <endianness> <reset mode> <chainpos> <variant> +target arm966e little reset_halt 1 arm966e +run_and_halt_time 0 30 + +working_area 0 0x50000000 16384 nobackup + +#flash bank <driver> <base> <size> <chip_width> <bus_width> +flash bank str9x 0x00000000 0x00080000 0 0 0 +@end smallexample + +@section STM32x Script +@cindex STM32x Script +The following script was used with an Amontec JTAGkey and a STM32x cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +jtag_speed 10 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe +jtag_device 5 0x1 0x1 0x1e + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target cortex_m3 <endianness> <reset mode> <chainpos> <variant> +target cortex_m3 little run_and_halt 0 +run_and_halt_time 0 30 + +working_area 0 0x20000000 16384 nobackup + +#flash bank <driver> <base> <size> <chip_width> <bus_width> +flash bank stm32x 0x08000000 0x00010000 0 0 0 +@end smallexample + +@section LPC2294 Script +@cindex LPC2294 Script +The following script was used with an Amontec JTAGkey and a LPC2294 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +ft2232_vid_pid 0x0403 0xcff8 +jtag_speed 2 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst srst_pulls_trst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm7tdmi <endianness> <reset mode> <chainpos> <variant> +target arm7tdmi little run_and_halt 0 arm7tdmi-s_r4 +run_and_halt_time 0 30 + +working_area 0 0x40000000 0x40000 nobackup + +#flash configuration +flash bank lpc2000 0x0 0x40000 0 0 0 lpc2000_v1 14765 calc_checksum +@end smallexample + +@section AT91R40008 Script +@cindex AT91R40008 Script +The following script was used with an Amontec JTAGkey and a AT91R40008 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +ft2232_vid_pid 0x0403 0xcff8 +jtag_speed 0 +jtag_nsrst_delay 200 +jtag_ntrst_delay 200 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config srst_only srst_pulls_trst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm7tdmi <endianness> <reset mode> <chainpos> <variant> +target arm7tdmi little run_and_halt 0 arm7tdmi +run_and_halt_time 0 30 +@end smallexample + +@section LPC2129 Script +@cindex LPC2129 Script +The following script was used with an wiggler PP and a LPC-2129 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface parport +parport_port 0x378 +parport_cable wiggler +jtag_speed 0 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst srst_pulls_trst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm7tdmi <endianness> <reset mode> <chainpos> <variant> +target arm7tdmi little run_and_halt 0 arm7tdmi-s_r4 +run_and_halt_time 0 30 + +working_area 0 0x00000000 0x400000 nobackup + +#flash bank <driver> <base> <size> <chip_width> <bus_width> +flash bank lpc2000 0x0 0x40000 0 0 0 lpc2000_v1 14765 calc_checksum +@end smallexample + +@section AT91SAM7s Script +@cindex AT91SAM7s Script +The following script was used with an Olimex ARM-JTAG-OCD and a AT91SAM7S64 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Olimex OpenOCD JTAG A" +ft2232_layout olimex-jtag +ft2232_vid_pid 0x15BA 0x0003 +jtag_speed 0 +jtag_nsrst_delay 200 +jtag_ntrst_delay 200 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config srst_only srst_pulls_trst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm7tdmi <endianness> <reset mode> <chainpos> <variant> +target arm7tdmi little run_and_halt 0 arm7tdmi +run_and_halt_time 0 30 + +# flash-options AT91 +working_area 0 0x00200000 0x4000 nobackup +flash bank at91sam7 0 0 0 0 0 + +# Information: +# erase command (telnet-interface) for complete flash: +# flash erase <num> 0 numlockbits-1 (can be seen from output of flash info 0) +# SAM7S64 with 16 lockbits and bank 0: flash erase 0 0 15 +# set/clear NVM-Bits: +# at91sam7 gpnvm <num> <bit> <set|clear> +# disable locking from SAM-BA: +# flash protect 0 0 1 off +@end smallexample + +@section XSCALE IXP42x Script +@cindex XSCALE IXP42x Script +The following script was used with an Amontec JTAGkey-Tiny and a xscale ixp42x cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +ft2232_vid_pid 0x0403 0xcff8 +jtag_speed 0 +jtag_nsrst_delay 200 +jtag_ntrst_delay 200 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config srst_only srst_pulls_trst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 7 0x1 0x7f 0x7e + +#target configuration +daemon_startup reset + +#target <type> <startup mode> +#target arm7tdmi <reset mode> <chainpos> <endianness> <variant> +target xscale big run_and_halt 0 IXP42x +run_and_halt_time 0 30 +@end smallexample + +@section Cirrus Logic EP9301 Script +@cindex Cirrus Logic EP9301 Script +The following script was used with FT2232 based JTAG interfaces and a +Cirrus Logic EP9301 processor on an Olimex CS-E9301 board. +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 + +#Olimex ARM-USB-OCD +#ft2232_device_desc "Olimex OpenOCD JTAG" +#ft2232_layout olimex-jtag +#ft2232_vid_pid 0x15ba 0x0003 + +#Amontec JTAGkey (and JTAGkey-Tiny) +#Serial is only necessary if more than one JTAGkey is connected +ft2232_device_desc "Amontec JTAGkey A" +#ft2232_serial AMTJKV31 +#ft2232_serial T1P3S2W8 +ft2232_layout jtagkey +ft2232_vid_pid 0x0403 0xcff8 + +#wiggler/parallel port interface +#interface parport +#parport_port 0x378 +#parport_cable wiggler +#jtag_speed 0 +jtag_speed 1 +reset_config trst_and_srst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +jtag_nsrst_delay 100 +jtag_ntrst_delay 100 + +#target configuration +daemon_startup attach + +#target <type> <endianess> <reset mode> +target arm920t little reset_halt 0 +working_area 0 0x80014000 0x1000 backup + +#flash configuration +#flash bank <driver> <base> <size> <chip_width> <bus_width> [driver_options ...] +flash bank cfi 0x60000000 0x1000000 2 2 0 +@end smallexample + +@section Hilscher netX 100 / 500 Script +@cindex Hilscher netX 100 / 500 Script +The following script was used with an Amontec JTAGkey and a Hilscher +netX 500 cpu: +@smallexample +#daemon configuration +telnet_port 4444 +gdb_port 3333 + +#interface +interface ft2232 +ft2232_device_desc "Amontec JTAGkey A" +ft2232_layout jtagkey +ft2232_vid_pid 0x0403 0xcff8 +jtag_speed 5 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 4 0x1 0xf 0xe + +jtag_nsrst_delay 100 +jtag_ntrst_delay 100 + +#target configuration +daemon_startup reset + +#target <type> <endianness> <startup mode> <chainpos> <variant> +target arm926ejs little run_and_halt 0 arm926ejs +run_and_halt_time 0 500 +@end smallexample + +@section Marvell/Intel PXA270 Script +@cindex Marvell/Intel PXA270 Script +@smallexample +# config for Intel PXA270 +# not, as of 2007-06-22, openocd only works with the +# libftd2xx library from ftdi. libftdi does not work. + +telnet_port 3333 +gdb_port 4444 + +interface ft2232 +ft2232_layout olimex-jtag +ft2232_vid_pid 0x15BA 0x0003 +ft2232_device_desc "Olimex OpenOCD JTAG" +jtag_speed 0 +# set jtag_nsrst_delay to the delay introduced by your reset circuit +# the rest of the needed delays are built into the openocd program +jtag_nsrst_delay 260 +# set the jtag_ntrst_delay to the delay introduced by a reset circuit +# the rest of the needed delays are built into the openocd program +jtag_ntrst_delay 0 + +#use combined on interfaces or targets that can't set TRST/SRST separately +reset_config trst_and_srst separate + +#jtag scan chain +#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE) +jtag_device 7 0x1 0x7f 0x7e + +#target configuration +daemon_startup reset + +target xscale little reset_halt 0 pxa27x + +# maps to PXA internal RAM. If you are using a PXA255 +# you must initialize SDRAM or leave this option off +working_area 0 0x5c000000 0x10000 nobackup + +run_and_halt_time 0 30 + +#flash bank <driver> <base> <size> <chip_width> <bus_width> +# works for P30 flash +flash bank cfi 0x00000000 0x1000000 2 4 0 +@end smallexample + +@node FAQ +@chapter FAQ +@cindex faq +@enumerate +@item OpenOCD complains about a missing cygwin1.dll + +Make sure you have Cygwin installed, or at least a version of OpenOCD that +claims to come with all the necessary dlls. When using Cygwin, try launching +the OpenOCD from the Cygwin shell. + +@item I'm trying to set a breakpoint using GDB (or a frontend like Insight or +Eclipse), but OpenOCD complains that "Info: arm7_9_common.c:213 +arm7_9_add_breakpoint(): sw breakpoint requested, but software breakpoints not enabled". + +GDB issues software breakpoints when a normal breakpoint is requested, or to implement +source-line single-stepping. On ARMv4T systems, like ARM7TDMI, ARM720t or ARM920t, +software breakpoints consume one of the two available hardware breakpoints, +and are therefor disabled by default. If your code is running from RAM, you +can enable software breakpoints with the @option{arm7_9 sw_bkpts enable} command. If +your code resides in Flash, you can't use software breakpoints, but you can force +OpenOCD to use hardware breakpoints instead: @option{arm7_9 force_hw_bkpts enable}. + +@item When erasing or writing LPC2000 on-chip flash, the operation fails sometimes +and works sometimes fine. + +Make sure the core frequency specified in the @option{flash lpc2000} line matches the +clock at the time you're programming the flash. If you've specified the crystal's +frequency, make sure the PLL is disabled, if you've specified the full core speed +(e.g. 60MHz), make sure the PLL is enabled. + +@item When debugging using an Amontec Chameleon in its JTAG Accelerator configuration, +I keep getting "Error: amt_jtagaccel.c:184 amt_wait_scan_busy(): amt_jtagaccel timed +out while waiting for end of scan, rtck was disabled". + +Make sure your PC's parallel port operates in EPP mode. You might have to try several +settings in your PC Bios (ECP, EPP, and different versions of those). + +@item When debugging with the OpenOCD and GDB (plain GDB, Insight, or Eclipse), +I get lots of "Error: arm7_9_common.c:1771 arm7_9_read_memory(): +memory read caused data abort". + +The errors are non-fatal, and are the result of GDB trying to trace stack frames +beyond the last valid frame. It might be possible to prevent this by setting up +a proper "initial" stack frame, if you happen to know what exactly has to +be done, feel free to add this here. + +@item I get the following message in the OpenOCD console (or log file): +"Warning: arm7_9_common.c:679 arm7_9_assert_reset(): srst resets test logic, too". + +This warning doesn't indicate any serious problem, as long as you don't want to +debug your core right out of reset. Your .cfg file specified @option{jtag_reset +trst_and_srst srst_pulls_trst} to tell the OpenOCD that either your board, +your debugger or your target uC (e.g. LPC2000) can't assert the two reset signals +independently. With this setup, it's not possible to halt the core right out of +reset, everything else should work fine. + +@item When using OpenOCD in conjunction with Amontec JTAGkey and the Yagarto +Toolchain (Eclipse, arm-elf-gcc, arm-elf-gdb), the debugging seems to be +unstable. When single-stepping over large blocks of code, GDB and OpenOCD +quit with an error message. Is there a stability issue with OpenOCD? + +No, this is not a stability issue concering OpenOCD. Most users have solved +this issue by simply using a self-powered USB Hub, which they connect their +Amontec JTAGkey to. Apparently, some computers do not provide a USB power +supply stable enough for the Amontec JTAGkey to be operated. + +@item When using the Amontec JTAGkey, sometimes OpenOCD crashes with the +following error messages: "Error: ft2232.c:201 ft2232_read(): FT_Read returned: +4" and "Error: ft2232.c:365 ft2232_send_and_recv(): couldn't read from FT2232". +What does that mean and what might be the reason for this? + +First of all, the reason might be the USB power supply. Try using a self-powered +hub instead of a direct connection to your computer. Secondly, the error code 4 +corresponds to an FT_IO_ERROR, which means that the driver for the FTDI USB +Chip ran into some sort of error - this points us to a USB problem. + +@item When using the Amontec JTAGkey, sometimes OpenOCD crashes with the following +error message: "Error: gdb_server.c:101 gdb_get_char(): read: 10054". +What does that mean and what might be the reason for this? + +Error code 10054 corresponds to WSAECONNRESET, which means that the debugger (GDB) +has closed the connection to OpenOCD. This might be a GDB issue. + +@item In the configuration file in the section where flash device configurations +are described, there is a parameter for specifying the clock frequency for +LPC2000 internal flash devices (e.g. +@option{flash bank lpc2000 0x0 0x40000 0 0 lpc2000_v1 0 14746 calc_checksum}), +which must be sepcified in kilohertz. However, I do have a quartz crystal of a +frequency that contains fractions of kilohertz (e.g. 14,745,600 Hz, i.e. 14,745.600 kHz). +Is it possible to specify real numbers for the clock frequency? + +No. The clock frequency specified here must be given as an integral number. +However, this clock frequency is used by the In-Application-Programming (IAP) +routines of the LPC2000 family only, which seems to be very tolerant concerning +the given clock frequency, so a slight difference between the specified clock +frequency and the actual clock frequency will not cause any trouble. + +@item Do I have to keep a specific order for the commands in the configuration file? + +Well, yes and no. Commands can be given in arbitrary order, yet the devices +listed for the JTAG scan chain must be given in the right order (jtag_device), +with the device closest to the TDO-Pin being listed first. In general, +whenever objects of the same type exist which require an index number, then +these objects must be given in the right order (jtag_devices, targets and flash +banks - a target references a jtag_device and a flash bank references a target). + +@item Sometimes my debugging session terminates with an error. When I look into the +log file, I can see these error messages: Error: arm7_9_common.c:561 +arm7_9_execute_sys_speed(): timeout waiting for SYSCOMP + +@end enumerate + +@include fdl.texi + +@node Index +@unnumbered Index + +@printindex cp + +@bye |