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riscv-openocd/contrib/loaders/flash/armv7m_io.s

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contrib: replace the GPLv2-or-later license tag Replace the GPLv2-or-later boilerplate with the SPDX tag. 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: I380d552940f1c405309a3346454251c0e80b5a45 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7159 Tested-by: jenkins
2022-08-30 15:18:31 -05:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
Added support for ARMv7-M in arm io. Added support for ARMv7-M targets in arm_nandwrite and arm_nandread. Change-Id: Iab1d78d401f735e191c6a8519f3619035a300fae Signed-off-by: Henrik Nilsson <henrik.nilsson@bytequest.se> Reviewed-on: http://openocd.zylin.com/1188 Tested-by: jenkins Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
2013-02-27 12:16:47 -06:00
/***************************************************************************
* Copyright (C) 2013 by Henrik Nilsson *
* henrik.nilsson@bytequest.se *
***************************************************************************/
.text
.syntax unified
.arch armv7-m
.thumb
.thumb_func
.align 4
/* Inputs:
* r0 buffer address
* r1 NAND data address (byte wide)
* r2 buffer length
*/
read:
ldrb r3, [r1]
strb r3, [r0], #1
subs r2, r2, #1
bne read
done_read:
bkpt #0
.align 4
/* Inputs:
* r0 NAND data address (byte wide)
* r1 buffer address
* r2 buffer length
*/
write:
ldrb r3, [r1], #1
strb r3, [r0]
subs r2, r2, #1
bne write
done_write:
bkpt #0
.end