the pi2 lacks a GIC
the bit your seeing in armstub7.S is for when the pi4 is running in arm7/32bit mode
for the pi0-pi3 family, you only have the broadcom custom irq controller
pi2/pi3 modified it some to support SMP
https://datasheets.raspberrypi.com/bcm2 ... herals.pdf
this PDF details how it differs from the 2835
the bit your seeing in armstub7.S is for when the pi4 is running in arm7/32bit mode
for the pi0-pi3 family, you only have the broadcom custom irq controller
pi2/pi3 modified it some to support SMP
https://datasheets.raspberrypi.com/bcm2 ... herals.pdf
this PDF details how it differs from the 2835
Statistics: Posted by cleverca22 — Thu Jan 15, 2026 5:24 am