13 @ @ FIQ entry point used for timer interrupts
25 .global intr_entry_nop
26 .global intr_entry_undef
27 .global intr_entry_swi
28 .global intr_entry_iabort
29 .global intr_entry_dabort
30 .global intr_entry_irq
31 .global intr_entry_fiq
41 ldr sp, =_stacktop @ HACK
54 @ setup next interrupt
55 ldr r1, =#0x3f003004 @ low counter in rpi2 TODO use rpi_iobase
57 add r0, #4000 @ 1Mhz / 250hz = 4k counts
58 ldr r1, =#0x3f003010 @ compare 1 reg
63 mov r0, #2 @ set bit 1 to clear interrupt from C1