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44 lines
925 B
ArmAsm
44 lines
925 B
ArmAsm
.extern CopyBootToRAM
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.section .startup,"ax"
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.code 32
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.align 0
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.global flashstart
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flashstart:
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b Reset
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b UndefinedInstruction
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b SoftwareInterrupt
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b PrefetchAbort
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b DataAbort
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b Reserved
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b Irq
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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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bl CopyBootToRAM @ copy bootloader to RAM (in case the
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@ user re-flashes the bootloader)
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ldr r3, .bootphase2_start @ start address of RAM bootloader
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bx r3 @ jump to it
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.stack_end:
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.word _stack_end
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.bootphase2_start:
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.word __bootphase2_start__
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Fiq:
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b Fiq
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UndefinedInstruction:
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b UndefinedInstruction
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SoftwareInterrupt:
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b SoftwareInterrupt
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PrefetchAbort:
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b PrefetchAbort
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DataAbort:
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b DataAbort
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Reserved:
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b Reserved
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Irq:
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b Irq
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