+// This file is part of the Doyxgen Developer Manual
/** @page tasks Pending and Open Tasks
This page lists pending and open tasks being considered or worked upon
@section thelist The List
-Items with a current patch available should include a link to its
-posting on the openocd-developer mailing list archives.
-
-Some items may be in progress, usually indicated by the individual whose
-initials in parentheses following it. A key for decoding these initials
-appears after The List.
-
Most items are open for the taking, but please post to the mailing list
before spending much time working on anything lists here. The community
may have evolved an idea since it was added here.
This section provides possible things to improve with OpenOCD's TCL support.
+- Fix problem with incorrect line numbers reported for a syntax
+ error in a reset init event.
+
- organize the TCL configurations:
- provide more directory structure for boards/targets?
- factor configurations into layers (encapsulation and re-use)
+- Fix handling of variables between multiple command line "-c" and "-f"
+ parameters. Currently variables assigned through one such parameter
+ command/script are unset before the next one is invoked.
+
- Isolate all TCL command support:
- Pure C CLI implementations using --disable-builtin-tcl.
- Allow developers to build new dongles using OpenOCD's JTAG core.
above rely heavily on scripting event mechanisms.
- Allow full TCL support? add --with-tcl=/path/to/installed/tcl
- Move TCL support out of foo.[ch] and into foo_tcl.[ch] (other ideas?)
+ - See src/jtag/core.c and src/jtag/tcl.c for an example.
+ - allow some of these TCL command modules to be dynamically loadable?
@section thelistjtag JTAG
@subsection thelistjtagcore JTAG Core
-The following tasks have been suggeted for cleaning up the JTAG layer:
+The following tasks have been suggested for cleaning up the JTAG layer:
- use tap_set_state everywhere to allow logging TAP state transitions
-- rename other tap_states to use standard JTAG names (suggested by ML)
-- retire jtag_add_end_state() and replace w/global variable:
- - removes TAP_INVALID as an argument to jtag_add_xxxx().
- - global variable as argument to jtag_add_xxxx() should be phased out, but
- it is useful while we need to bug-by-bug compatible while testing changes.
- - Suggested by ØH. Michael Bruck also interested in this.
- Encapsulate cmd_queue_cur_state and related varaible handling.
+- add slick 32 bit versions of jtag_add_xxx_scan() that avoids
+buf_set_u32() calls and other evidence of poor impedance match between
+API and calling code. New API should cut down # of lines in calling
+code by 100's and make things clearer. Also potentially be supported
+directly in minidriver API for better embedded host performance.
The following tasks have been suggested for adding new core JTAG support:
-- autodetect devices present on the scan chain
- - implement 'discover_taps' command
+- Improve autodetection of TAPs by supporting tcl escape procedures that
+ can configure discovered TAPs based on IDCODE value ... they could:
+ - Remove guessing for irlen
+ - Allow non-default irmask/ircapture values
- SPI/UART emulation:
- (ab)use bit-banging JTAG interfaces to emulate SPI/UART
- allow SPI to program flash, MCUs, etc.
@subsection thelistjtaginterfaces JTAG Interfaces
+There are some known bugs to fix in JTAG adapter drivers:
+
+- For JTAG_STATEMOVE to TAP_RESET, all drivers must ignore the current
+ recorded state. The tap_get_state() call won't necessarily return
+ the correct value, especially at server startup. Fix is easy: in
+ that case, always issue five clocks with TMS high.
+ - amt_jtagaccel.c
+ - arm-jtag-ew.c
+ - bitbang.c
+ - bitq.c
+ - gw16012.c
+ - jlink.c
+ - usbprog.c
+ - vsllink.c
+ - rlink/rlink.c
+- bug: USBprog is broken with new tms sequence; it needs 7-clock cycles.
+ Fix promised from Peter Denison openwrt at marshadder.org
+ Workaround: use "tms_sequence long" @par
+ https://lists.berlios.de/pipermail/openocd-development/2009-July/009426.html
+
The following tasks have been suggeted for improving OpenOCD's JTAG
interface support:
- rework USB communication to be more robust. Two possible options are:
-# use libusb-1.0.1 with libusb-compat-0.1.1 (non-blocking I/O wrapper)
-# rewrite implementation to use non-blocking I/O
-- FT2232 driver:
- - integrate FTD2XX High-Speed Device support @par
- PATCH: https://lists.berlios.de/pipermail/openocd-development/2009-April/005479.html
- - fix outstanding bugs
- J-Link driver:
- fix to work with long scan chains, such as R.Doss's svf test.
- - fix other outstanding bugs
+- FT2232 (libftdi):
+ - make performance comparable to alternatives (on Win32, D2XX is faster)
+ - make usability comparable to alternatives
+- Autodetect USB based adapters; this should be easy on Linux. If there's
+ more than one, list the options; otherwise, just select that one.
The following tasks have been suggested for adding new JTAG interfaces:
- TCP driver: allow client/server for remote JTAG interface control.
+This requires a client and a server. The server is built into the
+normal OpenOCD and takes commands from the client and executes
+them on the interface returning the result of TCP/IP. The client
+is an OpenOCD which is built with a TCP/IP minidriver. The use
+of a minidriver is required to capture all the jtag_add_xxx()
+fn's at a high enough level and repackage these cmd's as
+TCP/IP packets handled by the server.
@section thelistswd Serial Wire Debug
@section thelisttargets Target Support
-- general layer cleanup:
- - https://lists.berlios.de/pipermail/openocd-development/2009-May/006590.html
+- Many common ARM cores could be autodetected using IDCODE
+- general layer cleanup: @par
+ https://lists.berlios.de/pipermail/openocd-development/2009-May/006590.html
+- regression: "reset halt" between 729(works) and 788(fails): @par
+https://lists.berlios.de/pipermail/openocd-development/2009-July/009206.html
+- mcr/mrc target->type support
+ - missing from ARM920t, ARM966e, XScale.
+ It's possible that the current syntax is unable to support read-modify-write
+ operations(see arm966e).
+ - mcr/mrc - retire cp15 commands when there the mrc/mrc commands have been
+ tested from: arm926ejs, arm720t, cortex_a8
+- ARM7/9:
+ - clean up "arm9tdmi vector_catch". Available for some arm7 cores? @par
+https://lists.berlios.de/pipermail/openocd-development/2009-October/011488.html
+https://lists.berlios.de/pipermail/openocd-development/2009-October/011506.html
+ - add reset option to allow programming embedded ice while srst is asserted.
+ Some CPUs will gate the JTAG clock when srst is asserted and in this case,
+ it is necessary to program embedded ice and then assert srst afterwards.
+- ARM926EJS:
+ - reset run/halt/step is not robust; needs testing to map out problems.
- ARM11 improvements (MB?)
- - fix single stepping (reported by ØH)
+ - add support for asserting srst to reset the core.
+ - Single stepping works, but should automatically
+ use hardware stepping if available.
+ - mdb can return garbage data if read byte operation fails for
+ a memory region(16 & 32 byte access modes may be supported). Is this
+ a bug in the .MX31 PDK init script? Try on i.MX31 PDK:
+ mdw 0xb80005f0 0x8, mdh 0xb80005f0 0x10, mdb 0xb80005f0 0x20. mdb returns
+ garabage.
- implement missing functionality (grep FNC_INFO_NOTIMPLEMENTED ...)
+ - thumb support is missing: ISTR ARMv6 requires Thumb.
+ ARM1156 has Thumb2; ARM1136 doesn't.
- Cortex A8 support (ML)
- add target implementation (ML)
+- Generic ARM run_algorithm() interface
+ - tagged struct wrapping ARM instructions and metadata
+ - not revision-specific (current: ARMv4+ARMv5 -or- ARMv6 -or- ARMv7)
+ - usable with at least arm_nandwrite() and generic CFI drivers
- MC1322x support (JW/DE?)
- integrate and test support from JW (and DE?)
- get working with a known good interface (i.e. not today's jlink)
- work out how to debug this target
- AVR debugging protocol.
- FPGA:
- - improve things (??)
+ - Altera Nios Soft-CPU support
- Coldfire (suggested by NC)
- can we draw from the BDM project? @par
http://bdm.sourceforge.net/
@section thelistsvf SVF/XSVF
-- factor and clean-up code
-- review The Guide for OpenOCD Users for documentation errors or omissions
-- update The Manual for OpenOCD Developerrs:
- - add documentation describing the architecture of each module
- - provide Technical Primers to bootstrap contributor knowledge
- develop SVF unit tests
- develop XSVF unit tests
- finish implementing bus width/chip width handling (suggested by NC)
- factor vendor-specific code into separate source files
- add new callback interface for vendor-specific code
-- investigate/implement "thin wrapper" to use eCos CFI drivers (ØH)
+- investigate/implement "thin wrapper" to use eCos CFI drivers (ØH)
@section thelistdebug Debugger Support
+- add support for masks in watchpoints? @par
+ https://lists.berlios.de/pipermail/openocd-development/2009-October/011507.html
+- breakpoints can get lost in some circumstances: @par
+ https://lists.berlios.de/pipermail/openocd-development/2009-June/008853.html
+- add support for masks in watchpoints. The trick is that GDB does not
+ support a breakpoint mask in the remote protocol. One way to work around
+ this is to add a separate command "watchpoint_mask add/rem <addr> <mask>", that
+ is run to register a list of masks that the gdb_server knows to use with
+ a particular watchpoint address.
- integrate Keil AGDI interface to OpenOCD? (submitted by Dario Vecchio)
@section thelisttesting Testing Suite
@subsection thelisttestreports Test Feedback Tools
-These ideas were first introduced here:
+These ideas were first introduced here: @par
https://lists.berlios.de/pipermail/openocd-development/2009-May/006358.html
- provide report submission scripts for e-mail and web forms
@section thelistautotools Autotools Build System
-- investigate fixes to permit the use of -Wshadow
-- eliminate sources of confusion in @c boostrap script:
- -# Make @c bootstrap call 'configure --enable-maintainer-mode <opts>'?
+- make entire configure process require less user consideration:
+ - automatically detect the features that are available, unless
+ options were specifically provided to configure
+ - provide a report of the drivers that will be build at the end of
+ running configure, so the users can verify which driverswill be
+ built during 'make' (and their options) .
+- eliminate sources of confusion in @c bootstrap script:
+ -# Make @c bootstrap call 'configure --enable-maintainer-mode \<opts\>'?
-# Add @c buildstrap script to assist with boostrap and configure steps.
- automatically build tool-chains required for cross-compiling
- produce mingw32, arm-elf, others using in-tree scripts
The following architectural tasks need to be accomplished and should be
fairly easy to complete:
+- clean-up code to match style guides
- factor code to eliminate duplicated functionality
-- overhaul use of types to improve 32/64-bit portability
- rewrite code that uses casts to access 16-bit and larger types
from unaligned memory addresses
- libopenocd support: @par
The following strategic tasks will require ambition, knowledge, and time
to complete:
+- overhaul use of types to improve 32/64-bit portability
+ - types for both host and target word sizes?
+ - can we use GDB's CORE_TYPE support?
- Allow N:M:P mapping of servers, targets, and interfaces
-- loadable module support for interface/target/flash drivers
+- loadable module support for interface/target/flash drivers and commands
+ - support both static and dynamic modules.
+ - should probably use libltdl for dynamic library handing.
-@section thelistadmin Administrative Tasks
+@section thelistadmin Documentation Tasks
-- Develop "style" guidelines for committing to Subversion
-- Develop milestone and release guidelines.
+- Develop milestone and release guidelines, processes, and scripts.
+- Develop "style" guidelines (and scripts) for maintainers:
+ - reviewing patches
+ - committing to Subversion
+- Review The Guide for OpenOCD Users for documentation errors or omissions
+- Update The Manual for OpenOCD Developerrs:
+ - Add documentation describing the architecture of each module
+ - Provide more Technical Primers to bootstrap contributor knowledge
*/
/** @file
This file contains the @ref thelist page.
*/
+
Code Review / openocd.git / blobdiff