git.zerfleddert.de Git - proxmark3-svn/blob

1 @-----------------------------------------------------------------------------

2 @ This code is licensed to you under the terms of the GNU GPL, version 2 or,

3 @ at your option, any later version. See the LICENSE.txt file for the text of

4 @ the license.

5 @-----------------------------------------------------------------------------

6 @ Reset vector for running from FLASH

7 @-----------------------------------------------------------------------------

9 .section .startup,"ax"

11 .arm

13 .global flashstart

14 flashstart:

15 b reset

16 b undefined_instruction

17 b software_interrupt

18 b prefetch_abort

19 b data_abort

20 b . @reserved

21 ldr pc, [pc,#-0xF20] @ IRQ - read the AIC

22 b fiq

24 reset:

25 ldr sp, =_stack_end @ initialize stack pointer to top of RAM

27 @ copy bootloader to RAM (in case the user re-flashes the bootloader)

28 ldr r0, =__bootphase2_src_start__

29 ldr r1, =__bootphase2_start__

30 ldr r2, =__bootphase2_end__

32 ldr r3, [r0], #4

33 str r3, [r1], #4

34 cmp r1, r2

35 blo 1b

37 ldr r3, =ram_start @ start address of RAM bootloader

38 bx r3 @ jump to it

40 .ltorg

42 undefined_instruction:

43 b .

44 software_interrupt:

45 b .

46 prefetch_abort:

47 b .

48 data_abort:

49 b .

50 fiq:

51 b .