@item @b{imx_gpio}
@* A NXP i.MX-based board (e.g. Wandboard) using the GPIO pins (should work on any i.MX processor).
+@item @b{am335xgpio}
+@* A Texas Instruments AM335x-based board (e.g. BeagleBone Black) using the GPIO pins of the expansion headers.
+
@item @b{jtag_vpi}
@* A JTAG driver acting as a client for the JTAG VPI server interface.
@* Link: @url{http://github.com/fjullien/jtag_vpi}
@deffnx {Config Command} {pld init}
@deffnx {Command} {tpiu init}
@end deffn
+
+At last, @command{init} executes all the commands that are specified in
+the TCL list @var{post_init_commands}. The commands are executed in the
+same order they occupy in the list. If one of the commands fails, then
+the error is propagated and OpenOCD fails too.
+@example
+lappend post_init_commands @{echo "OpenOCD successfully initialized."@}
+lappend post_init_commands @{echo "Have fun with OpenOCD !"@}
+@end example
@end deffn
@deffn {Config Command} {noinit}
@end deffn
+@deffn {Interface Driver} {am335xgpio} The AM335x SoC is present in BeagleBone
+Black and BeagleBone Green single-board computers which expose some of the GPIOs
+on the two expansion headers.
+
+For maximum performance the driver accesses memory-mapped GPIO peripheral
+registers directly. The memory mapping requires read and write permission to
+kernel memory; if /dev/gpiomem exists it will be used, otherwise /dev/mem will
+be used. The driver restores the GPIO state on exit.
+
+All four GPIO ports are available. GPIOs numbered 0 to 31 are mapped to GPIO port
+0, GPIO numbers 32 to 63 are mapped to GPIO port 1 and so on.
+
+See @file{interface/beaglebone-swd-native.cfg} for a sample configuration file.
+
+@deffn {Config Command} {am335xgpio jtag_nums} @var{tck} @var{tms} @var{tdi} @var{tdo}
+Set JTAG transport GPIO numbers for TCK, TMS, TDI, and TDO (in that order).
+Must be specified to enable JTAG transport. These pins can also be specified
+individually.
+@end deffn
+
+@deffn {Config Command} {am335xgpio tck_num} @var{tck}
+Set TCK GPIO number. Must be specified to enable JTAG transport. Can also be
+specified using the configuration command @command{am335xgpio jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio tms_num} @var{tms}
+Set TMS GPIO number. Must be specified to enable JTAG transport. Can also be
+specified using the configuration command @command{am335xgpio jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio tdo_num} @var{tdo}
+Set TDO GPIO number. Must be specified to enable JTAG transport. Can also be
+specified using the configuration command @command{am335xgpio jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio tdi_num} @var{tdi}
+Set TDI GPIO number. Must be specified to enable JTAG transport. Can also be
+specified using the configuration command @command{am335xgpio jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio swd_nums} @var{swclk} @var{swdio}
+Set SWD transport GPIO numbers for SWCLK and SWDIO (in that order). Must be
+specified to enable SWD transport. These pins can also be specified individually.
+@end deffn
+
+@deffn {Config Command} {am335xgpio swclk_num} @var{swclk}
+Set SWCLK GPIO number. Must be specified to enable SWD transport. Can also be
+specified using the configuration command @command{am335xgpio swd_nums}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio swdio_num} @var{swdio}
+Set SWDIO GPIO number. Must be specified to enable SWD transport. Can also be
+specified using the configuration command @command{am335xgpio swd_nums}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio swdio_dir_num} @var{swdio_dir}
+Set SWDIO direction control pin GPIO number. If specified, this pin can be used
+to control the direction of an external buffer on the SWDIO pin. The direction
+control state can be set with the command @command{am335xgpio
+swdio_dir_output_state}. If not specified this feature is disabled.
+@end deffn
+
+@deffn {Config Command} {am335xgpio swdio_dir_output_state} @var{output_state}
+Set the state required for an external SWDIO buffer to be an output. Valid
+values are @option{on} (default) and @option{off}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio srst_num} @var{srst}
+Set SRST GPIO number. Must be specified to enable SRST.
+@end deffn
+
+@deffn {Config Command} {am335xgpio trst_num} @var{trst}
+Set TRST GPIO number. Must be specified to enable TRST.
+@end deffn
+
+@deffn {Config Command} {am335xgpio led_num} @var{led}
+Set activity LED GPIO number. If not specified an activity LED is not enabled.
+@end deffn
+
+@deffn {Config Command} {am335xgpio led_on_state} @var{on_state}
+Set required logic level for the LED to be on. Valid values are @option{on}
+(default) and @option{off}.
+@end deffn
+
+@deffn {Config Command} {am335xgpio speed_coeffs} @var{speed_coeff} @var{speed_offset}
+Set SPEED_COEFF and SPEED_OFFSET for delay calculations. If unspecified
+speed_coeff defaults to 600000 and speed_offset defaults to 575.
+@end deffn
+
+@end deffn
+
+
@deffn {Interface Driver} {linuxgpiod}
Linux provides userspace access to GPIO through libgpiod since Linux kernel version v4.6.
-The driver emulates either JTAG and SWD transport through bitbanging.
+The driver emulates either JTAG or SWD transport through bitbanging.
See @file{interface/dln-2-gpiod.cfg} for a sample config.
+
+@deffn {Config Command} {linuxgpiod gpiochip} @var{chip}
+Set the GPIO chip number for all GPIOs used by linuxgpiod. If GPIOs use
+different GPIO chips then the individual GPIO configuration commands (i.e., not
+@command{linuxgpiod jtag_nums} or @command{linuxgpiod swd_nums}) can be used to
+set chip numbers independently for each GPIO.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod jtag_nums} @var{tck} @var{tms} @var{tdi} @var{tdo}
+Set JTAG transport GPIO numbers for TCK, TMS, TDI, and TDO (in that order). Must
+be specified to enable JTAG transport. These pins can also be specified
+individually.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod tck_num} [@var{chip}] @var{tck}
+Set TCK GPIO number, and optionally TCK chip number. Must be specified to enable
+JTAG transport. Can also be specified using the configuration command
+@command{linuxgpiod jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod tms_num} [@var{chip}] @var{tms}
+Set TMS GPIO number, and optionally TMS chip number. Must be specified to enable
+JTAG transport. Can also be specified using the configuration command
+@command{linuxgpiod jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod tdo_num} [@var{chip}] @var{tdo}
+Set TDO GPIO number, and optionally TDO chip number. Must be specified to enable
+JTAG transport. Can also be specified using the configuration command
+@command{linuxgpiod jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod tdi_num} [@var{chip}] @var{tdi}
+Set TDI GPIO number, and optionally TDI chip number. Must be specified to enable
+JTAG transport. Can also be specified using the configuration command
+@command{linuxgpiod jtag_nums}.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod trst_num} [@var{chip}] @var{trst}
+Set TRST GPIO number, and optionally TRST chip number. Must be specified to
+enable TRST.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod swd_nums} @var{swclk} @var{swdio}
+Set SWD transport GPIO numbers for SWCLK and SWDIO (in that order). Must be
+specified to enable SWD transport. These pins can also be specified
+individually.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod swclk_num} [@var{chip}] @var{swclk}
+Set SWCLK GPIO number, and optionally SWCLK chip number. Must be specified to
+enable SWD transport. Can also be specified using the configuration command
+@command{linuxgpiod swd_nums}.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod swdio_num} [@var{chip}] @var{swdio}
+Set SWDIO GPIO number, and optionally SWDIO chip number. Must be specified to
+enable SWD transport. Can also be specified using the configuration command
+@command{linuxgpiod swd_nums}.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod swdio_dir_num} [@var{chip}] @var{swdio_dir}
+Set SWDIO direction control GPIO number, and optionally SWDIO direction control
+chip number. If specified, this GPIO can be used to control the direction of an
+external buffer connected to the SWDIO GPIO (set=output mode, clear=input mode).
+@end deffn
+
+@deffn {Config Command} {linuxgpiod srst_num} [@var{chip}] @var{srst}
+Set SRST GPIO number, and optionally SRST chip number. Must be specified to
+enable SRST.
+@end deffn
+
+@deffn {Config Command} {linuxgpiod led_num} [@var{chip}] @var{led}
+Set activity LED GPIO number, and optionally activity LED chip number. If not
+specified an activity LED is not enabled.
+@end deffn
+
@end deffn
other). If option @option{error} is used, OpenOCD will return a
non-zero exit code to the parent process.
-Like any TCL commands, also @command{shutdown} can be redefined, e.g.:
+If user types CTRL-C or kills OpenOCD, the command @command{shutdown}
+will be automatically executed to cause OpenOCD to exit.
+
+It is possible to specify, in the TCL list @var{pre_shutdown_commands} , a
+set of commands to be automatically executed before @command{shutdown} , e.g.:
@example
-# redefine shutdown
-rename shutdown original_shutdown
-proc shutdown @{@} @{
- puts "This is my implementation of shutdown"
- # my own stuff before exit OpenOCD
- original_shutdown
-@}
+lappend pre_shutdown_commands @{echo "Goodbye, my friend ..."@}
+lappend pre_shutdown_commands @{echo "see you soon !"@}
@end example
-If user types CTRL-C or kills OpenOCD, either the command @command{shutdown}
-or its replacement will be automatically executed before OpenOCD exits.
+The commands in the list will be executed (in the same order they occupy
+in the list) before OpenOCD exits. If one of the commands in the list
+fails, then the remaining commands are not executed anymore while OpenOCD
+will proceed to quit.
@end deffn
@anchor{debuglevel}
command.
@end deffn
+@deffn {Command} {arm semihosting_basedir} [dir]
+@cindex ARM semihosting
+Set the base directory for semihosting I/O, either an absolute path or a path relative to OpenOCD working directory.
+Use "." for the current directory.
+@end deffn
+
@section ARMv4 and ARMv5 Architecture
@cindex ARMv4
@cindex ARMv5
Code Review / openocd.git / blobdiff