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- /***************************************************************************
- * Copyright (C) 2010 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * 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., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
- ***************************************************************************/
-
- .text
- .arm
- .arch armv4t
-
- .section .init
- /*
- r0 source address
- r1 address
- r2 FLASH_CR0
- r3 dword count
- r4 result
- r5 busy mask
- */
-
- write:
- mov r4, #0x10000000 /* set DWPG bit */
- str r4, [r2, #0x0] /* FLASH_CR0 */
- str r1, [r2, #0x10] /* FLASH_AR */
- ldr r4, [r0], #4 /* load data */
- str r4, [r2, #0x8] /* FLASH_DR0 */
- ldr r4, [r0], #4 /* load data */
- str r4, [r2, #0xc] /* FLASH_DR1 */
- mov r4, #0x90000000 /* set DWPG and WMS bits */
- str r4, [r2, #0x0] /* FLASH_CR0 */
- busy:
- ldr r4, [r2, #0x0] /* FLASH_CR0 */
- tst r4, r5
- bne busy
- ldr r4, [r2, #0x14] /* FLASH_ER */
- tst r4, #0xff /* do we have errors */
- tsteq r4, #0x100 /* write protection set */
- bne exit
- add r1, r1, #0x8 /* next 8 bytes */
- subs r3, r3, #1 /* decrement dword count */
- bne write
- exit:
- b exit
-
- .end
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