proc init_board @{@} @{
reset_config trst_and_srst trst_pulls_srst
+ $_TARGETNAME configure -event reset-start @{
+ adapter_khz 100
+ @}
+
$_TARGETNAME configure -event reset-init @{
- adapter_khz 1
enable_fast_clock
adapter_khz 10000
@}
@end deffn
+@deffn {Interface Driver} {ft232r}
+This driver is implementing synchronous bitbang mode of an FTDI FT232R
+USB UART bridge IC.
+
+List of connections (pin numbers for SSOP):
+@itemize @minus
+@item RXD(5) - TDI
+@item TXD(1) - TCK
+@item RTS(3) - TDO
+@item CTS(11) - TMS
+@item DTR(2) - TRST
+@item DCD(10) - SRST
+@end itemize
+
+These interfaces have several commands, used to configure the driver
+before initializing the JTAG scan chain:
+
+@deffn {Config Command} {ft232r_vid_pid} @var{vid} @var{pid}
+The vendor ID and product ID of the adapter. If not specified, default
+0x0403:0x6001 is used.
+@end deffn
+
+@deffn {Config Command} {ft232r_serial_desc} @var{serial}
+Specifies the @var{serial} of the adapter to use, in case the
+vendor provides unique IDs and more than one adapter is connected to
+the host. If not specified, serial numbers are not considered.
+@end deffn
+
+@end deffn
+
@deffn {Interface Driver} {remote_bitbang}
Drive JTAG from a remote process. This sets up a UNIX or TCP socket connection
with a remote process and sends ASCII encoded bitbang requests to that process
two different handlers, but calling it twice with the
same event name assigns only one handler.
+Current target is temporarily overridden to the event issuing target
+before handler code starts and switched back after handler is done.
+
@item @code{-work-area-backup} (@option{0}|@option{1}) -- says
whether the work area gets backed up; by default,
@emph{it is not backed up.}
and invokes a small procedure while the other inlines it.
@example
-proc my_attach_proc @{ @} @{
- echo "Reset..."
- reset halt
+proc my_init_proc @{ @} @{
+ echo "Disabling watchdog..."
+ mww 0xfffffd44 0x00008000
@}
-mychip.cpu configure -event gdb-attach my_attach_proc
-mychip.cpu configure -event gdb-attach @{
- echo "Reset..."
- # To make flash probe and gdb load to flash work
- # we need a reset init.
- reset init
+mychip.cpu configure -event reset-init my_init_proc
+mychip.cpu configure -event reset-init @{
+ echo "Disabling watchdog..."
+ mww 0xfffffd44 0x00008000
@}
@end example
@item @b{debug-halted}
@* The target has halted for debug reasons (i.e.: breakpoint)
@item @b{debug-resumed}
-@* The target has resumed (i.e.: gdb said run)
+@* The target has resumed (i.e.: GDB said run)
@item @b{early-halted}
@* Occurs early in the halt process
@item @b{examine-start}
@item @b{examine-end}
@* After target examine is called with no errors.
@item @b{gdb-attach}
-@* When GDB connects. This is before any communication with the target, so this
-can be used to set up the target so it is possible to probe flash. Probing flash
-is necessary during gdb connect if gdb load is to write the image to flash. Another
-use of the flash memory map is for GDB to automatically hardware/software breakpoints
-depending on whether the breakpoint is in RAM or read only memory.
+@* When GDB connects. Issued before any GDB communication with the target
+starts. GDB expects the target is halted during attachment.
+@xref{gdbmeminspect,,GDB as a non-intrusive memory inspector}, how to
+connect GDB to running target.
+The event can be also used to set up the target so it is possible to probe flash.
+Probing flash is necessary during GDB connect if you want to use
+@pxref{programmingusinggdb,,programming using GDB}.
+Another use of the flash memory map is for GDB to automatically choose
+hardware or software breakpoints depending on whether the breakpoint
+is in RAM or read only memory.
+Default is @code{halt}
@item @b{gdb-detach}
@* When GDB disconnects
@item @b{gdb-end}
@item @b{gdb-flash-write-end}
@* After GDB writes to the flash (default is @code{reset halt})
@item @b{gdb-start}
-@* Before the target steps, gdb is trying to start/resume the target
+@* Before the target steps, GDB is trying to start/resume the target
@item @b{halted}
@* The target has halted
@item @b{reset-assert-pre}
@* Issued as part of @command{reset} processing
-after @command{reset_init} was triggered
-but before either SRST alone is re-asserted on the scan chain,
+after @command{reset-start} was triggered
+but before either SRST alone is asserted on the scan chain,
or @code{reset-assert} is triggered.
@item @b{reset-assert}
@* Issued as part of @command{reset} processing
(You may be able to switch to a fast JTAG clock rate here, after
the target clocks are fully set up.)
@item @b{reset-start}
-@* Issued as part of @command{reset} processing
-before @command{reset_init} is called.
+@* Issued as the first step in @command{reset} processing
+before @command{reset-assert-pre} is called.
This is the most robust place to use @command{jtag_rclk}
or @command{adapter_khz} to switch to a low JTAG clock rate,
@item @var{ir} ... is loaded into the JTAG IR to map the flash as the JTAG DR.
For the bitstreams generated from @file{xilinx_bscan_spi.py} this is the
@var{USER1} instruction.
-@item @var{dr_length} ... is the length of the DR register. This will be 1 for
-@file{xilinx_bscan_spi.py} bitstreams and most other cases.
@end itemize
@example
target create $_TARGETNAME testee -chain-position $_CHIPNAME.fpga
set _XILINX_USER1 0x02
-set _DR_LENGTH 1
flash bank $_FLASHNAME spi 0x0 0 0 0 \
- $_TARGETNAME $_XILINX_USER1 $_DR_LENGTH
+ $_TARGETNAME $_XILINX_USER1
@end example
@end deffn
+@deffn {Flash Driver} xcf
+@cindex Xilinx Platform flash driver
+@cindex xcf
+Xilinx FPGAs can be configured from specialized flash ICs named Platform Flash.
+It is (almost) regular NOR flash with erase sectors, program pages, etc. The
+only difference is special registers controlling its FPGA specific behavior.
+They must be properly configured for successful FPGA loading using
+additional @var{xcf} driver command:
+
+@deffn Command {xcf ccb} <bank_id>
+command accepts additional parameters:
+@itemize
+@item @var{external|internal} ... selects clock source.
+@item @var{serial|parallel} ... selects serial or parallel data bus mode.
+@item @var{slave|master} ... selects slave of master mode for flash device.
+@item @var{40|20} ... selects clock frequency in MHz for internal clock
+in master mode.
+@end itemize
+@example
+xcf ccb 0 external parallel slave 40
+@end example
+All of them must be specified even if clock frequency is pointless
+in slave mode. If only bank id specified than command prints current
+CCB register value. Note: there is no need to write this register
+every time you erase/program data sectors because it stores in
+dedicated sector.
+@end deffn
+
+@deffn Command {xcf configure} <bank_id>
+Initiates FPGA loading procedure. Useful if your board has no "configure"
+button.
+@example
+xcf configure 0
+@end example
+@end deffn
+
+Additional driver notes:
+@itemize
+@item Only single revision supported.
+@item Driver automatically detects need of bit reverse, but
+only "bin" (raw binary, do not confuse it with "bit") and "mcs"
+(Intel hex) file types supported.
+@item For additional info check xapp972.pdf and ug380.pdf.
+@end itemize
+@end deffn
+
@deffn {Flash Driver} lpcspifi
@cindex NXP SPI Flash Interface
@cindex SPIFI
@comment - defines mass_erase ... pointless given flash_erase_address
@end deffn
+@deffn {Flash Driver} bluenrg-x
+STMicroelectronics BlueNRG-1 and BlueNRG-2 Bluetooth low energy wireless system-on-chip. They include ARM Cortex-M0 core and internal flash memory.
+The driver automatically recognizes these chips using
+the chip identification registers, and autoconfigures itself.
+
+@example
+flash bank $_FLASHNAME bluenrg-x 0 0 0 0 $_TARGETNAME
+@end example
+
+Note that when users ask to erase all the sectors of the flash, a mass erase command is used which is faster than erasing
+each single sector one by one.
+
+@example
+flash erase_sector 0 0 79 # It will perform a mass erase on BlueNRG-1
+@end example
+
+@example
+flash erase_sector 0 0 127 # It will perform a mass erase on BlueNRG-2
+@end example
+
+Triggering a mass erase is also useful when users want to disable readout protection.
+
+@end deffn
+
@deffn {Flash Driver} efm32
All members of the EFM32 microcontroller family from Energy Micro include
internal flash and use ARM Cortex-M3 cores. The driver automatically recognizes
internal flash and use ARM Cortex-M0+ or M4 cores. The driver automatically
recognizes flash size and a number of flash banks (1-4) using the chip
identification register, and autoconfigures itself.
-Use kinetis_ke driver for KE0x devices.
+Use kinetis_ke driver for KE0x and KEAx devices.
The @var{kinetis} driver defines option:
@itemize
@deffn {Flash Driver} kinetis_ke
@cindex kinetis_ke
-KE0x members of the Kinetis microcontroller family from Freescale include
+KE0x and KEAx members of the Kinetis microcontroller family from NXP include
internal flash and use ARM Cortex-M0+. The driver automatically recognizes
the KE0x sub-family using the chip identification register, and
autoconfigures itself.
@end deffn
@end deffn
+@deffn {Flash Driver} psoc6
+Supports PSoC6 (CY8C6xxx) family of Cypress microcontrollers.
+PSoC6 is a dual-core device with CM0+ and CM4 cores. Both cores share
+the same Flash/RAM/MMIO address space.
+
+Flash in PSoC6 is split into three regions:
+@itemize @bullet
+@item Main Flash - this is the main storage for user application.
+Total size varies among devices, sector size: 256 kBytes, row size:
+512 bytes. Supports erase operation on individual rows.
+@item Work Flash - intended to be used as storage for user data
+(e.g. EEPROM emulation). Total size: 32 KBytes, sector size: 32 KBytes,
+row size: 512 bytes.
+@item Supervisory Flash - special region which contains device-specific
+service data. This region does not support erase operation. Only few rows can
+be programmed by the user, most of the rows are read only. Programming
+operation will erase row automatically.
+@end itemize
+
+All three flash regions are supported by the driver. Flash geometry is detected
+automatically by parsing data in SPCIF_GEOMETRY register.
+
+PSoC6 is equipped with NOR Flash so erased Flash reads as 0x00.
+
+@example
+flash bank main_flash_cm0 psoc6 0x10000000 0 0 0 $@{TARGET@}.cm0
+flash bank work_flash_cm0 psoc6 0x14000000 0 0 0 $@{TARGET@}.cm0
+flash bank super_flash_user_cm0 psoc6 0x16000800 0 0 0 $@{TARGET@}.cm0
+flash bank super_flash_nar_cm0 psoc6 0x16001A00 0 0 0 $@{TARGET@}.cm0
+flash bank super_flash_key_cm0 psoc6 0x16005A00 0 0 0 $@{TARGET@}.cm0
+flash bank super_flash_toc2_cm0 psoc6 0x16007C00 0 0 0 $@{TARGET@}.cm0
+
+flash bank main_flash_cm4 psoc6 0x10000000 0 0 0 $@{TARGET@}.cm4
+flash bank work_flash_cm4 psoc6 0x14000000 0 0 0 $@{TARGET@}.cm4
+flash bank super_flash_user_cm4 psoc6 0x16000800 0 0 0 $@{TARGET@}.cm4
+flash bank super_flash_nar_cm4 psoc6 0x16001A00 0 0 0 $@{TARGET@}.cm4
+flash bank super_flash_key_cm4 psoc6 0x16005A00 0 0 0 $@{TARGET@}.cm4
+flash bank super_flash_toc2_cm4 psoc6 0x16007C00 0 0 0 $@{TARGET@}.cm4
+@end example
+
+psoc6-specific commands
+@deffn Command {psoc6 reset_halt}
+Command can be used to simulate broken Vector Catch from gdbinit or tcl scripts.
+When invoked for CM0+ target, it will set break point at application entry point
+and issue SYSRESETREQ. This will reset both cores and all peripherals. CM0+ will
+reset CM4 during boot anyway so this is safe. On CM4 target, VECTRESET is used
+instead of SYSRESETREQ to avoid unwanted reset of CM0+;
+@end deffn
+
+@deffn Command {psoc6 mass_erase} num
+Erases the contents given flash bank. The @var{num} parameter is a value shown
+by @command{flash banks}.
+Note: only Main and Work flash regions support Erase operation.
+@end deffn
+@end deffn
+
@deffn {Flash Driver} sim3x
All members of the SiM3 microcontroller family from Silicon Laboratories
include internal flash and use ARM Cortex-M3 cores. It supports both JTAG
Add @var{directory} to the file/script search path.
@end deffn
-@deffn Command bindto [name]
-Specify address by name on which to listen for incoming TCP/IP connections.
-By default, OpenOCD will listen on all available interfaces.
+@deffn Command bindto [@var{name}]
+Specify hostname or IPv4 address on which to listen for incoming
+TCP/IP connections. By default, OpenOCD will listen on the loopback
+interface only. If your network environment is safe, @code{bindto
+0.0.0.0} can be used to cover all available interfaces.
@end deffn
@anchor{targetstatehandling}
group. With SMP handling disabled, all targets need to be treated individually.
@end deffn
+@deffn Command {aarch64 maskisr} [@option{on}|@option{off}]
+Selects whether interrupts will be processed when single stepping. The default configuration is
+@option{on}.
+@end deffn
+
@section Intel Architecture
Intel Quark X10xx is the first product in the Quark family of SoCs. It is an IA-32
In a debug session using JTAG for its transport protocol,
OpenOCD supports running such test files.
-@deffn Command {svf} filename [@option{quiet}]
+@deffn Command {svf} @file{filename} [@option{-tap @var{tapname}}] [@option{[-]quiet}] @
+ [@option{[-]nil}] [@option{[-]progress}] [@option{[-]ignore_error}]
This issues a JTAG reset (Test-Logic-Reset) and then
runs the SVF script from @file{filename}.
-Unless the @option{quiet} option is specified,
-each command is logged before it is executed.
+
+Arguments can be specified in any order; the optional dash doesn't
+affect their semantics.
+
+Command options:
+@itemize @minus
+@item @option{-tap @var{tapname}} ignore IR and DR headers and footers
+specified by the SVF file with HIR, TIR, HDR and TDR commands;
+instead, calculate them automatically according to the current JTAG
+chain configuration, targetting @var{tapname};
+@item @option{[-]quiet} do not log every command before execution;
+@item @option{[-]nil} ``dry run'', i.e., do not perform any operations
+on the real interface;
+@item @option{[-]progress} enable progress indication;
+@item @option{[-]ignore_error} continue execution despite TDO check
+errors.
+@end itemize
@end deffn
@section XSVF: Xilinx Serial Vector Format
only work for code running from flash memory. Most other ARM systems
do not have such restrictions.
-Another example of useful GDB configuration came from a user who
-found that single stepping his Cortex-M3 didn't work well with IRQs
-and an RTOS until he told GDB to disable the IRQs while stepping:
-
-@example
-define hook-step
-mon cortex_m maskisr on
-end
-define hookpost-step
-mon cortex_m maskisr off
-end
-@end example
-
Rather than typing such commands interactively, you may prefer to
save them in a file and have GDB execute them as it starts, perhaps
using a @file{.gdbinit} in your project directory or starting GDB
areas to be programmed lie within the target flash area the vFlash packets
will be used.
-If the target needs configuring before GDB programming, an event
-script can be executed:
+If the target needs configuring before GDB programming, set target
+event gdb-flash-erase-start:
@example
-$_TARGETNAME configure -event EVENTNAME BODY
+$_TARGETNAME configure -event gdb-flash-erase-start BODY
@end example
+@xref{targetevents,,Target Events}, for other GDB programming related events.
To verify any flash programming the GDB command @option{compare-sections}
can be used.
+
+@section Using GDB as a non-intrusive memory inspector
+@cindex Using GDB as a non-intrusive memory inspector
+@anchor{gdbmeminspect}
+
+If your project controls more than a blinking LED, let's say a heavy industrial
+robot or an experimental nuclear reactor, stopping the controlling process
+just because you want to attach GDB is not a good option.
+
+OpenOCD does not support GDB non-stop mode (might be implemented in the future).
+Though there is a possible setup where the target does not get stopped
+and GDB treats it as it were running.
+If the target supports background access to memory while it is running,
+you can use GDB in this mode to inspect memory (mainly global variables)
+without any intrusion of the target process.
+
+Remove default setting of gdb-attach event. @xref{targetevents,,Target Events}.
+Place following command after target configuration:
+@example
+$_TARGETNAME configure -event gdb-attach @{@}
+@end example
+
+If any of installed flash banks does not support probe on running target,
+switch off gdb_memory_map:
+@example
+gdb_memory_map disable
+@end example
+
+Ensure GDB is configured without interrupt-on-connect.
+Some GDB versions set it by default, some does not.
+@example
+set remote interrupt-on-connect off
+@end example
+
+If you switched gdb_memory_map off, you may want to setup GDB memory map
+manually or issue @command{set mem inaccessible-by-default off}
+
+Now you can issue GDB command @command{target remote ...} and inspect memory
+of a running target. Do not use GDB commands @command{continue},
+@command{step} or @command{next} as they synchronize GDB with your target
+and GDB would require stopping the target to get the prompt back.
+
+Do not use this mode under an IDE like Eclipse as it caches values of
+previously shown varibles.
+
@anchor{usingopenocdsmpwithgdb}
@section Using OpenOCD SMP with GDB
@cindex SMP
projects / openocd / blobdiff