From 43ff5acd45017fd9828cc56f54b929e600956c3b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20F=C3=A4rber?= Date: Mon, 20 Apr 2015 02:51:23 +0200 Subject: flash: New Spansion FM4 flash driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-on: http://openocd.zylin.com/2190 Tested-by: jenkins Reviewed-by: Spencer Oliver --- tcl/target/fm4_s6e2cc.cfg | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tcl/target/fm4_s6e2cc.cfg') diff --git a/tcl/target/fm4_s6e2cc.cfg b/tcl/target/fm4_s6e2cc.cfg index 18cc630..60b73b9 100644 --- a/tcl/target/fm4_s6e2cc.cfg +++ b/tcl/target/fm4_s6e2cc.cfg @@ -13,3 +13,7 @@ if { [info exists WORKAREASIZE] } { $_TARGETNAME configure -work-area-phys [expr 0x20000000 - $_WORKAREASIZE] \ -work-area-size $_WORKAREASIZE -work-area-backup 0 + +set _FLASHNAME $_CHIPNAME.flash +flash bank ${_FLASHNAME}0 fm4 0x00000000 0 0 0 $_TARGETNAME $CHIPSERIES +flash bank ${_FLASHNAME}1 fm4 0x00100000 0 0 0 $_TARGETNAME $CHIPSERIES -- cgit v1.1