1 /***************************************************************************
2 * Copyright (C) 2010 by Spencer Oliver *
3 * spen@spen-soft.co.uk *
5 * Copyright (C) 2011 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
25 // Build : arm-eabi-gcc -c stm32f2xxx.S
36 r2 - count (halfword-16bit)
41 #define STM32_FLASH_CR_OFFSET 0x10 /* offset of CR register in FLASH struct */
42 #define STM32_FLASH_SR_OFFSET 0x0c /* offset of CR register in FLASH struct */
48 str r3, [r4, #STM32_FLASH_CR_OFFSET]
49 ldrh r3, [r0], #0x02 /* read one half-word from src, increment ptr */
50 strh r3, [r1], #0x02 /* write one half-word from src, increment ptr */
52 ldr r3, [r4, #STM32_FLASH_SR_OFFSET]
53 tst r3, #0x10000 /* BSY (bit0) == 1 => operation in progress */
54 beq busy /* wait more... */
55 tst r3, #0xf0 /* PGSERR | PGPERR | PGAERR | WRPERR */
56 bne exit /* fail... */
57 subs r2, r2, #0x01 /* decrement counter */
58 bne write_half_word /* write next half-word if anything left */
63 STM32_PROG16: .word 0x101 /* PG | PSIZE_16*/