interesting
/
riscv-openocd
mirror of https://github.com/riscv/riscv-openocd.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
riscv-openocd/contrib/loaders/flash/fm4/fm4.h

22 lines
370 B
C
Raw Normal View History

contrib: add GPL license tag on files that miss it Some file miss completely the license tag. Add the SPDX tag, using the same GPL-2.0-or-later license of the OpenOCD project. The SPDX tag on files *.c is incorrect, as it should use the C99 single line comment using '//'. But current checkpatch doesn't allow C99 comments, so keep using standard C comments, by now. Change-Id: I24bd362eeb6b74f09aceb9b757d45cbfa4afe334 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7160 Tested-by: jenkins
2022-08-30 17:20:16 -05:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
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>
2015-04-19 19:51:23 -05:00
/*
* Spansion FM4 flash macros
*
* Copyright (c) 2015 Andreas Färber
*
* Based on S6E2CC_MN709-00007 for S6E2CC/C5/C4/C3/C2/C1 series
*/
.text
.syntax unified
.cpu cortex-m4
.thumb
.thumb_func
#define FLASH_DPOL (1 << 7)
#define FLASH_TOGG (1 << 6)
#define FLASH_TLOV (1 << 5)
#define FLASH_TOGG2 (1 << 2)