diff options
| author | Henrik Nilsson <henrik.nilsson@bytequest.se> | 2013-02-27 19:16:47 +0100 |
|---|---|---|
| committer | Spencer Oliver <spen@spen-soft.co.uk> | 2013-04-02 15:11:02 +0000 |
| commit | 70fb53f90b4134cf10de3b504f56ec7c4a248b63 (patch) | |
| tree | cf9b4986b74ac6930fb319454d6af860e34721f4 /contrib | |
| parent | 704fc7eb3dea26308a0af09c2f4a35b64ad3346f (diff) | |
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>
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/loaders/flash/armv7m_io.s | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/contrib/loaders/flash/armv7m_io.s b/contrib/loaders/flash/armv7m_io.s new file mode 100644 index 00000000..3bd90ca6 --- /dev/null +++ b/contrib/loaders/flash/armv7m_io.s @@ -0,0 +1,60 @@ +/*************************************************************************** + * Copyright (C) 2013 by Henrik Nilsson * + * henrik.nilsson@bytequest.se * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + + .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 + |