This adds the guts of a transport framework with initialization,
which should work with current JTAG-only configurations (tested
with FT2232).
Each debug adapter can declare the transports it supports, and
exactly one transport is initialized. (with its commands) in
any given OpenOCD session.
* Define a new "struct transport with init hooks and a few
"transport" subcommands to support it:
"list" ... list the transports configured (just "jtag" for now)
"select" ... makes the debug session use that transport
"init" ... initializes the selected transport (internal)
* "interface_transports" ... declares transports the current interface
can support. (Some will do this from C code instead, when there are
no hardware versioning (or other) issues to prevent it.
Plus some FT2232 tweaks, including a few to streamline upcoming
support for an SWD transport (initially for Luminary adapters).
Eventually src/jtag should probably become src/transport, moving
jtag-specific stuff to transport/jtag.
Signed-off-by: David Brownell <db@helium.(none)>
This adds a virtual flash bank driver that allows virtual banks to
be defined that refer to an existing flash bank.
For example the real address for bank0 on the pic32 is 0x1fc00000
but the user program will either be in kseg0 (0xbfc00000) or
kseg1 (0x9fc00000).
This also means that gdb will be aware of all the read only flash
addresses.
Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
1. fix some errors in jtag.txt(in my personal opinion, please review).
2. remove a broken link
Signed-off-by: Jun Ma <sync.jma@gmail.com>
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
There are a million reasons why cached protection state might
be stale: power cycling of target, reset, code executing on
the target, etc.
The "flash protect_check" command is now gone. This is *always*
executed when running a "flash info".
As a bonus for more a more robust approach, lots of code could
be deleted.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Flash probing must succeed for e.g. gdb load and automatic
hardware/software breakpoints to work.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Clean up the jtag/tcl.c file, which was one of the biggest and
messiest ones in that directory. Do it by splitting out all the
generic adapter commands to a separate "adapter.c" file (leaving
the "tcl.c" file holding only JTAG utilities).
Also rename the little-used "jtag interface" to "adapter_name", which
should have been at least re-categorized earlier (it's not jtag-only).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
The mips_m4k_assert_reset has now been restructured
so the variant ejtag_srst is not required anymore.
The ejtag software reset will be used if the target does not
have srst connected.
Remove ejtag_srst from docs.
Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
Globally rename "jtag_nsrst_assert_width" as "adapter_nsrst_assert_width",
and move it out of the "jtag" command group ... it needs to be used with
non-JTAG transports
Includes a migration aid (in jtag/startup.tcl) so that old user scripts
won't break. That aid should Sunset in about a year.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Globally rename "jtag_nsrst_delay" as "adapter_nsrst_delay", and move it
out of the "jtag" command group ... it needs to be used with non-JTAG
transports
Includes a migration aid (in jtag/startup.tcl) so that old user scripts
won't break. That aid should Sunset in about a year.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Globally rename "jtag_khz" as "adapter_khz", and move it out of the "jtag"
command group ... it needs to be used with non-JTAG transports
Includes a migration aid (in jtag/startup.tcl) so that old user scripts
won't break. That aid should Sunset in about a year. (We may want to
update it to include a nag message too.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
This includes a driver and matching config file. This support needs to be
enabled through the initial "configure" (use "--enable-buspirate").
Signed-off-by: Michal Demin <michaldemin@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
We'll need to be able to work with debug adapter interfaces (drivers)
even when they're not used for JTAG ... for example, while there are
multi-transport drivers which support JTAG *and* several other
transports (or just one more, like SWD) there are also adapters
with more limited goals (and no JTAG support at all).
Start decoupling the two concepts ("debug adapter driver", "jtag")
by having two command groups, which initialize separately.
This will help us support OpenOCD sessions using only non-JTAG
transports, in which JTAG commands should not be registered.
Update docs to mention that the JTAG, SVF, and XSVF commands
won't work without a JTAG transport.
Note that at least commands working with SRST are still inappropriately
coupled to JTAG ... inappropriate because (a) SRST is not part of the
JTAG standard, for all that many platforms (like ARM) expect it; and also
(b) because they're used with non-JTAG debug and programming interfaces,
too. They should perhaps become generic "interface" operations at some
point. (Similarly with the clock rate to be used by a given adapter.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Talk more about "debug adapters" instead of only "dongles". Not all
adapters are discrete widgets; some are integrated onto boards. If
we only talk about "dongles" we rule out many valid setups, and help
confuse some users (who may be using Dongle-free environments).
Also start bringing out the point that JTAG isn't the only transport
protocol, even though OpenOCD historically presumes "all is JTAG".
(Not all debug adapters are JTAG adapters, or JTAG-only adapters.)
Plus a few minor fixes (spelling etc) in the vicinity of those changes,
and updates about FT2232H clocking issues (they can go faster than the
older chips, and can support adaptive clocking).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Move semihosting cmd to the arm cmd group.
Targets that support semihosting will setup the
setup_semihosting callback function.
Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
