By default pic32mx starts after any reset with 1 wait state for RAM access/exec.
It can be changed to 0 wait states by clearing the BMXWSDRM bit (bit 6) in BMXCON register.
With 0 wait states near doubles the execution speed. CRC check sum can be done much faster
increasing verify_image speed. Fast data transfer also works with a bit higher scan rate, up to 1500 Khz.
This option can be set at any time with
mww 0xbf882004 0x40
or cleared with
mww 0xbf882008 0x40.
Some numbers for FTDI/HS with current devel code and a elf file:
Core clock / wait states verify_image speed
------------------------------------|------------------------------
4 Mhz / 1 21 KiB/s
4 Mhz / 0 36 KiB/s
8 Mhz / 1 37 KiB/s
8 Mhz / 0 57 KiB/s
Change-Id: I4092ad0f3753f72f77108718d0ed3a3ab84e3b23
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/1141
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Xiaofan <xiaofanc@gmail.com>
As for openocd 0.6.0-rc2 the function mips32_pracc_fastdata_xfer()
should now work at a scan frequency up to 1200Khz.
Mainly usefull to increase programming speed.
Also verify_image should be slightly faster.
Change-Id: I1e9b2be73690a4597e2f6ba069c1205026850f07
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/805
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Drop useless double-space occurences, drop trailing whitespace, and fix
some other minor whitespace-related issues.
Change-Id: I6b4c515492e2ee94dc25ef1fe4f51015a4bba8b5
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/137
Tested-by: jenkins
There are many "force an error till we get a good number" comments in
target/board files. This refers to the use-case where a config script
sets _CPUTAPID to 0xffffffff (which presumely gets overridden later):
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
# Force an error until we get a good number.
set _CPUTAPID 0xffffffff
}
However, the same comment was also copy-pasted in many files which do
_not_ set _CPUTAPID to 0xffffffff, where the comment doesn't make any
sense at all. Drop those comments. Also, add one missing comment, and
fix small whitespace and grammar issues.
Change-Id: Ic4ba3b5ccba87ed40cea0d6a7d66609fbdfa3c71
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Reviewed-on: http://openocd.zylin.com/136
Tested-by: jenkins
Reviewed-by: Peter Stuge <peter@stuge.se>
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>
The default config script will now dynamically setup the BMX registers
in the reset init script.
This will also work if the user overrides the default working area.
Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
Add flash algorithm support for the PIC32MX.
Still a few things todo but this dramatically decreases
the programing time, eg. approx programming for 2.5k test file.
- without fastload: 60secs
- with fastload: 45secs
- with fastload and algorithm: 2secs.
Add new devices to supported list.
Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
add reset-init script to allow ram execution from reset, this is required for ejtag fastdata access.
Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
The semantics of "-work-area-virt 0" (or phys) changed with
the patch to require specifying physical or virtrual work
area addresses. Specifying zero was previously a NOP. Now
it means that address zero is valid.
This patch addresses three related issues:
- MMU-less processors should never specify work-area-virt;
remove those specifications. Such processors include
ARM7TDMI, Cortex-M3, and ARM966.
- MMU-equipped processors *can* specify work-area-virt...
but zero won't be appropriate, except in mischievous
contexts (which hide null pointer exceptions).
Remove those specs from those processors too. If any of
those mappings is valid, someone will need to submit a
patch adding it ... along with a comment saying what OS
provides the mapping, and in which context. Example,
say "works with Linux 2.6.30+, in kernel mode". (Note
that ARM Linux doesn't map kernel memory to zero ...)
- Clarify docs on that "-virt" and other work area stuff.
Seems to me work-area-virt is quite problematic; not every
operating system provides such static mappings; if they do,
they're not in every MMU context...
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
- Move src/tcl to tcl/.
- Update top Makefile.am to use new path name.
git-svn-id: svn://svn.berlios.de/openocd/trunk@1919 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Salvador Arroyo
Spencer Oliver
Uwe Hermann
Øyvind Harboe
Spencer Oliver
David Brownell
Zachary T Welch
dbrownell
oharboe
zwelch