Try to right-size the SRAM buffers, by not:
- using them for very small writes
- giving up when a large buffer isn't available
- allocating buffers much larger than their data
Also don't:
- bother loading the code unless we allocate the writebuffer too
- be so verbose with messaging:
* be more concise
* reduce importance (e.g. DEBUG not WARNING)
* remove duplication
The minimum buffer size is something of a guess. It's eight
times smaller than before, almost the same size as the code
being downloaded. It probably deserves some tuning.
Also, note an erratum affecting flash protection on some chips;
and narrow many over-wide lines affected by the above changes.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Refactored the write page raw function into two new functions
for writing data to a NAND device and then another function to
finish up a write to a NAND device. This includes some new
updates to introduce more error checking to existing code.
[dbrownell@users.sourceforge.net: fix fault handling, whitespace]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Added a new function to encapsulate reading a page of data from
a NAND device using either the read_block_data function of a NAND
controller or to use direct reading of data from the NAND device.
This also adds some performance enhancements and uses the read_data
function if the read_block_data function fails safely (because it
can't allocate a buffer in the working area).
[dbrownell@users.sourceforge.net: fix fault handling, whitespace]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Tweak the "scan_chain" output by removing column separators. Also
remove the "current instruction" state ... which changes constantly.
Now its style resembles the "targets" output, and can even fit on
one line in standard terminals and in the PDF docs.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Someday revisit various issues: Tempest parts support writing
more than one word at a time; for some target firmware it might
be necessary to save and restore flash IRQ configuration. (The
safest policy is likely to always reset after flash updates.)
Plus swap some undesirable TAB characters with SPACE.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Fix potential memory leak: make sure the per-bank data
structures are only allocated in probe(), and that calling
probe() multiple times is a NOP. Use it for auto_probe().
Require probe() to have done its thing: don't make access
routines cope with it not having been called. Shrink a
bunch of failure paths; and in some cases, correct them.
Don't needlessly insist on a halted target for probe().
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
No point in reading and discarding a status value when fetching
part description data. Or having that needless "#if 0" code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Previously "reading" clock info (and part info) also, as a side
effect, wrote the flash timing register. Instead, be more safe:
"reading" should only read. Write paths still refresh timing,
coping with changes the application code may have made.
Also rename the routine which sets flash timing, indicating what
it's really doing; it's got nothing to do with a "mode".
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
By exhausting data on input, the performance will be more
consistent + the code more clearly distinguishes between
polling and processing. A test showed gdb packet load
performance go from ~1550kByte/s to 1650kBytes/s + being
more stable.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Remove more remnants of the old "jtag_device" syntax.
Don't [format "%s.cpu" $_CHIPNAME] ... it's needless complexity.
Remove various non-supported "-variant" target options; they're not
needed often at all.
Flag some of the board files as needing to have and use target files
for the TAP and target declarations.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
That syntax has been obsolete forever and is now gone; remove a few
remaining references. Shows how seldom this stuff gets used.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Teach ARM11 how to use:
- the new "reset-assert" event
- vector catch to implement "reset halt"
- use SRST more like other cores do
- ... including leaving post-SRST delays up to config scripts
This gives OMAP2420 the ability to reset, and doesn't seem to
cause new iMX31 problems.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Common target.cfg file for LM3S CPU family
[dbrownell@users.sourceforge.net: rename, generalize more]
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
I added the remaining devices and device IDs to stellaris.c, and
removed several devices that don't exist on the Stellaris web page.
Additionally, I found a few devices with duplicate IDs ... the DID1
Version Number for LM3Sxxx parts have DID1 Version = 0x0, and for
LM3Sxxxx have DID1 Version = 0x1. So I extended the comparison to
use the VER and FAM fields from DID1 also.
ID=0x33: LM3S812 (DID1v0) and LM3S2616 (DID1v1)
ID=0x39: LM3S808 (DID1v0) and LM3S2276 (DID1v1)
These are the parts I removed from the file for lack of documentation
(no data sheet to confirm part ID):
LM3S318,
LM3S1101, LM3S1108,
LM3S1615, LM3S1616,
LM3S2016,
LM3S2101, LM3S2108,
LM3S3759, LM3S3768,
LM3S5757, LM3S5767, LM3S5768, LM3S5769,
LM3S6815, LM3S6816,
LM3S6915, LM3S6916,
LM3S6111, LM3S6118.
Also, sort devices according to part number.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Add a "-ignore-version" to "jtag newtap" which makes the IDCODE
comparison logic optionally ignore version differences.
Update the "scan_chain" command to illustrate this by showing
the "*" character instead of the (ignored) version nibble.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Make these ".h" files adopt the same policy the ".c" files already
follow: don't use <subsystem/...h> syntax for private interfaces.
If we ever get reviewed/supported "public" interfaces they should
come exclusively from some include/... directory; that'll be the
time to switch to <...> syntax for any subsystem's own interfaces.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Don't include <helper/jim.h> from target.h ... not everything
which touches targets needs to be able to talk to Jim. Plus,
most files include this header by another path.
Also, switch the affected files to use the classic sequence
for #included files: all <framework/headers.h> first, then
the "local_headers.h". This helps prevent growth of problematic
layering, by minimizing entanglement.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
For some routines that only returned ERROR_OK and where the
caller never checked ... don't bother. Remove some noise,
and bugfix some comments.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Abstract the DPM breakpoint and watchpoint data structures to
have a shared core for housekeeping.
Abstract the code updating the watchpoint registers so that it
can be used to update breakpoint registers. Then do so, when
something has set up the breakpoint state used by this code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Properly detect all of these, including the "2" variants;
and bugfix parameter display for LDC and STC.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
ITR register handling seemed to be giving me problems, so I updated
the comments to better say what the code is trying to do ... and to
note the preconditions (one of which seems to be an issue) as listed
in the ARM1136 TRM.
Also removed the unused "ARM11_TAP_DEFAULT" from the ITR scan code;
all the callers already specify an exit path, since this register
isn't usable with such vague semantics.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
This fixes the issue under native win32 of the socket interface not being
enabled (via WSAStartup) before init is called from a script.
Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
I neglected to copy Magnus' copyright when I moved several
declarations from the ARMv7-M header.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Bugfix the read side of flash protection:
- read the right register(s)!
- handle more than 64K
- record the results in the right places
- don't display garbage.
Partially bugfix the write side:
- use 2KB lock regions instead of 1KB pages (!)
- validate input range
- don't try to _remove_ protection (it's write-once)
- #define values we'll need to commit writes.
- ... still doesn't handle pages over 64KB mark, or commit writes
And minor cleanup and fixes:
- get rid of some forward decls
- properly locate a doxygen comment
- fix some bad indentation
- remove superfluous #include
- add a new part ID (many are still missing)
- make the downloaded algorithm code be read-only
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
David Brownell
Dean Glazeski
Spencer Oliver
Øyvind Harboe
mkdorg@users.sourceforge.net
Yegor Yefremov
Eric Wetzel
Zachary T Welch
Rafael Campos Las Heras