40 lines
1.4 KiB
ArmAsm
40 lines
1.4 KiB
ArmAsm
|
/***************************************************************************
|
||
|
|
* __________ __ ___.
|
||
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||
|
|
* \/ \/ \/ \/ \/
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
* Copyright (C) 2011 by Amaury Pouly
|
||
|
|
*
|
||
|
|
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||
|
|
* KIND, either express or implied.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
.text
|
||
|
|
.global start
|
||
|
|
@ int start(uint32_t arg, uint32_t *result_id)
|
||
|
|
start:
|
||
|
|
#if defined(SANSA_FUZEPLUS)
|
||
|
|
/* If volume down key is hold, return so that the OF can boot */
|
||
|
|
ldr r2, =0x80018610 @ HW_PINCTRL_DIN1
|
||
|
|
ldr r2, [r2]
|
||
|
|
tst r2, #0x40000000 @ bit 30, active low
|
||
|
|
moveq r0, #0 @ return 0, continue boot
|
||
|
|
bxeq lr
|
||
|
|
/* otherwise jump to section given as argument */
|
||
|
|
str r0, [r1]
|
||
|
|
mov r0, #1
|
||
|
|
bx lr
|
||
|
|
#else
|
||
|
|
#error No target defined !
|
||
|
|
#endif
|