AMO Firmware

Minimal ROM-resident firmware for the AMO CPU/SoC.

What it does

This code performs only the entry point and memory initialization.

After initialization, it jumps to the kernel Lamune.

Interrupt Vectors

Type	Offset
Reset	0x0
Undefined	0x4
IRQ	0x8
SWI	0xC

On Reset, the firmware runs the initialization routine.

On Undefined, it halts (hangs).

For IRQ and SWI, the stubs immediately return, performing the original routine to continue.

At this early boot stage, interrupts are not meaningfully handled.

undefined:
	; alert
	; halt
	jmp .hlt

interrupt:
	ret r26

irq:
	ret r26