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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/* Most of the code from this file has now been moved into the target trees */
#include "config.h"
#include "cpu.h"
.section .init.text,"ax",@progbits
.global start
start:
#if CONFIG_CPU == TCC730
/* Platform: Gmini 120/SP */
;; disable all interrupts
clrsr fe
clrsr ie
clrsr te
ld a14, #0x3F0000
ld r5, 0xA5
ldb @[a14 + 6], r5 ; disable watchdog
ld a11, #(_datacopy) ; where the data section is in the flash
ld a8, #(_datastart) ; destination
;; copy data section from flash to ram.
ld a9, #_datasize
ld r6, e9
cmp eq, r6, #0
brf .data_copy_loop
cmp eq, r9, #0
brt .data_copy_end
.data_copy_loop:
ldc r2, @a11
ldw @[a8 + 0], r2
add a11, #0x2
add a8, #0x2
sub r9, #0x2
sbc r6, #0
cmp ugt, r6, #0
brt .data_copy_loop
cmp ugt, r9, #0
brt .data_copy_loop
.data_copy_end:
;; zero out bss
ld r2, #0
ld a8, #(_bssstart) ; destination
ld a9, #_bsssize
ld r6, e9
cmp eq, r6, #0
brf .bss_init_loop
cmp eq, r9, #0
brt .bss_init_end
.bss_init_loop:
ldw @[a8 + 0], r2
add a8, #0x2
sub r9, #0x2
sbc r6, #0
cmp ugt, r6, #0
brt .bss_init_loop
cmp ugt, r9, #0
brt .bss_init_loop
.bss_init_end:
;; set stack pointer
ld a15, _stackend
;; go!
jsr _main
;; soft reset
ld a10, #0
ldc r10, @a10
jmp a10
.section .vectors, "ax"
irq_handler:
push r0, r1
push r2, r3
push r4, r5
push r6, r7
push a8, a9
push a10, a11
push a12, a13
push a14
ld a13, #0x3f0000
ldb r0, @[a13 + 0x26]
add r0, r0
ld a10, #_interrupt_vector
ldw a13, @[a10 + r0]
jsr a13
pop a14
pop a13, a12
pop a11, a10
pop a9, a8
pop r7, r6
pop r5, r4
pop r3, r2
pop r1, r0
ret_irq
#endif
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