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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
.global irq_glue
.global irq_vector_table
#include <boot/arm.h>
v_reset:
b start
v_undefined:
b .
v_swi:
b .
v_prefetch_abt:
b .
v_data_abt:
b .
v_reserved:
b .
v_irq:
b .
v_fiq:
b .
start:
ldr r5, =0xfffff000
ands r4, pc, r5
beq already_at_zero
/* we're not loaded at 0 -- relocate us back down to where we belong */
mov r5, #0
ldr r6, =BOOTLOADER_END
1: ldr r7, [r4], #4
str r7, [r5], #4
cmp r5, r6
bne 1b
mov pc, #0
already_at_zero:
/* save registers for main() */
mov r7, r0
mov r8, r1
mov r9, r2
mov r10, r3
/* init stack */
ldr r0, =BOOTLOADER_STACK
msr cpsr_c, #(PSR_I | PSR_F | PSR_SVC)
mov sp, r0
/* zero the BSS */
ldr r1, =BOOTLOADER_BSS
ldr r2, =BOOTLOADER_END
mov r0, #0
1: str r0, [r1], #4
cmp r1, r2
ble 1b
bl periph_2gb_open
/* restore registers for main() */
mov r0, r7
mov r1, r8
mov r2, r9
mov r3, r10
ldr r4, =_main
blx r4
b .