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Commit | Line | Data |
---|---|---|
1 | .extern CopyBootToRAM | |
2 | ||
3 | .section .startup,"ax" | |
4 | .code 32 | |
5 | .align 0 | |
6 | ||
7 | .global flashstart | |
8 | flashstart: | |
9 | b Reset | |
10 | b UndefinedInstruction | |
11 | b SoftwareInterrupt | |
12 | b PrefetchAbort | |
13 | b DataAbort | |
14 | b Reserved | |
15 | b Irq | |
16 | b Fiq | |
17 | ||
18 | Reset: | |
19 | ldr sp, .stack_end @ initialize stack pointer to top of RAM | |
20 | bl CopyBootToRAM @ copy bootloader to RAM (in case the | |
21 | @ user re-flashes the bootloader) | |
22 | ldr r3, .bootphase2_start @ start address of RAM bootloader | |
23 | bx r3 @ jump to it | |
24 | ||
25 | .stack_end: | |
26 | .word _stack_end | |
27 | .bootphase2_start: | |
28 | .word __bootphase2_start__ | |
29 | ||
30 | Fiq: | |
31 | b Fiq | |
32 | UndefinedInstruction: | |
33 | b UndefinedInstruction | |
34 | SoftwareInterrupt: | |
35 | b SoftwareInterrupt | |
36 | PrefetchAbort: | |
37 | b PrefetchAbort | |
38 | DataAbort: | |
39 | b DataAbort | |
40 | Reserved: | |
41 | b Reserved | |
42 | Irq: | |
43 | b Irq |