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| author | Andreas Färber <afaerber@suse.de> | 2015-04-20 02:51:23 +0200 |
|---|---|---|
| committer | Andreas Fritiofson <andreas.fritiofson@gmail.com> | 2016-02-29 19:40:20 +0000 |
| commit | 43ff5acd45017fd9828cc56f54b929e600956c3b (patch) | |
| tree | f6642b088a641491ce0c8de96423cb1f45b6f1f2 /doc | |
| parent | 13618ab99426b0786d6825e5816a3b082f8aa973 (diff) | |
| download | riscv-openocd-43ff5acd45017fd9828cc56f54b929e600956c3b.zip riscv-openocd-43ff5acd45017fd9828cc56f54b929e600956c3b.tar.gz riscv-openocd-43ff5acd45017fd9828cc56f54b929e600956c3b.tar.bz2 | |
flash: New Spansion FM4 flash driver
The Spansion FM4 family of microcontrollers does not offer a way to
identify the chip model nor the flash size, except for Dual Flash vs.
regular layout. Therefore the family is passed as argument and
wildcard-matched - MB9BFx6x and S6E2CC families are supported.
Iterations showed that ...
1) Just doing the flash command sequence from SRAM loader code for each
half-word took 20 minutes for an 8 KB block.
2) Doing the busy-wait in the loader merely reduced the time to 19 minutes.
3) Significant performance gains were achieved by looping in loader code
rather than in OpenOCD and by maximizing the batch size across sectors,
getting us down to ~2 seconds for 8 KB and ~2.5 minutes for 1.1 MB.
(Tested with SK-FM4-176L-S6E2CC-ETH v11, CMSIS-DAP v23.)
gcc, objcopy -Obinary and bin2char.sh are used for automating the
integration of hand-written assembler snippets.
Change-Id: I092c81074662534f50b71b91d54eb8e0098fec76
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/2190
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/openocd.texi | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi index d1f7855..e131f1e 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -5240,6 +5240,24 @@ Command disables watchdog timer. @end deffn @end deffn +@deffn {Flash Driver} fm4 +All members of the FM4 microcontroller family from Spansion (formerly Fujitsu) +include internal flash and use ARM Cortex-M4 cores. +The @var{fm4} driver uses a @var{family} parameter to select the +correct bank config, it can currently be one of the following: +@code{MB9BFx66}, @code{MB9BFx67}, @code{MB9BFx68}, +@code{S6E2Cx8}, @code{S6E2Cx9} or @code{S6E2CxA}, +with @code{x} treated as wildcard and otherwise case (and any trailing +characters) ignored. + +@example +flash bank $@{_FLASHNAME@}0 fm4 0x00000000 0 0 0 $_TARGETNAME S6E2CCAJ0A +flash bank $@{_FLASHNAME@}1 fm4 0x00100000 0 0 0 $_TARGETNAME S6E2CCAJ0A +@end example +@emph{The current implementation is incomplete. Protection is not supported, +nor is Chip Erase (only Sector Erase is implemented).} +@end deffn + @deffn {Flash Driver} lpc2000 This is the driver to support internal flash of all members of the LPC11(x)00 and LPC1300 microcontroller families and most members of |