mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-11-03 04:00:21 -08:00
63 lines
1.7 KiB
ArmAsm
63 lines
1.7 KiB
ArmAsm
@-----------------------------------------------------------------------------
|
|
@ Copyright (C) Jonathan Westhues, Mar 2006
|
|
@ Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
|
@
|
|
@ 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 3 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.
|
|
@
|
|
@ See LICENSE.txt for the text of the license.
|
|
@-----------------------------------------------------------------------------
|
|
@ Reset vector for running from FLASH
|
|
@-----------------------------------------------------------------------------
|
|
|
|
.section .startup,"ax"
|
|
|
|
.arm
|
|
|
|
.global flashstart
|
|
flashstart:
|
|
b reset
|
|
b undefined_instruction
|
|
b software_interrupt
|
|
b prefetch_abort
|
|
b data_abort
|
|
b . @reserved
|
|
ldr pc, [pc,#-0xF20] @ IRQ - read the AIC
|
|
b fiq
|
|
|
|
reset:
|
|
ldr sp, =_stack_end @ initialize stack pointer to top of RAM
|
|
|
|
@ copy bootloader to RAM (in case the user re-flashes the bootloader)
|
|
ldr r0, =__bootphase2_src_start__
|
|
ldr r1, =__bootphase2_start__
|
|
ldr r2, =__bootphase2_end__
|
|
1:
|
|
ldr r3, [r0], #4
|
|
str r3, [r1], #4
|
|
cmp r1, r2
|
|
blo 1b
|
|
|
|
ldr r3, =ram_start @ start address of RAM bootloader
|
|
bx r3 @ jump to it
|
|
|
|
.ltorg
|
|
|
|
undefined_instruction:
|
|
b .
|
|
software_interrupt:
|
|
b .
|
|
prefetch_abort:
|
|
b .
|
|
data_abort:
|
|
b .
|
|
fiq:
|
|
b .
|