mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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63 lines
1.7 KiB
ArmAsm
63 lines
1.7 KiB
ArmAsm
@-----------------------------------------------------------------------------
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@ Copyright (C) Jonathan Westhues, Mar 2006
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@ Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
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@
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@ This program is free software: you can redistribute it and/or modify
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@ it under the terms of the GNU General Public License as published by
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@ the Free Software Foundation, either version 3 of the License, or
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@ (at your option) any later version.
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@
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@ This program is distributed in the hope that it will be useful,
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@ but WITHOUT ANY WARRANTY; without even the implied warranty of
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@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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@ GNU General Public License for more details.
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@
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@ See LICENSE.txt for the text of the license.
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@-----------------------------------------------------------------------------
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@ Reset vector for running from FLASH
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@-----------------------------------------------------------------------------
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.section .startup,"ax"
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.arm
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.global flashstart
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flashstart:
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b reset
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b undefined_instruction
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b software_interrupt
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b prefetch_abort
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b data_abort
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b . @reserved
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ldr pc, [pc,#-0xF20] @ IRQ - read the AIC
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b fiq
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reset:
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ldr sp, =_stack_end @ initialize stack pointer to top of RAM
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@ copy bootloader to RAM (in case the user re-flashes the bootloader)
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ldr r0, =__bootphase2_src_start__
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ldr r1, =__bootphase2_start__
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ldr r2, =__bootphase2_end__
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1:
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ldr r3, [r0], #4
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str r3, [r1], #4
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cmp r1, r2
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blo 1b
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ldr r3, =ram_start @ start address of RAM bootloader
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bx r3 @ jump to it
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.ltorg
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undefined_instruction:
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b .
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software_interrupt:
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b .
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prefetch_abort:
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b .
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data_abort:
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b .
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fiq:
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b .
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