nuttx/arch/arm
zhangyuan21 9c0d2e1a3c armv7-a/gicv2: move IRQ to group1 and group0 as the FIQ
Purpose: make the the os crash when busyloop with interrupt disable

Follow the arm gicv2 spec, if we want to use the IRQ and FIQ
simultaneously when not using the processor Security Externsions.
We should:
1. IRQ to Group 1 and FIQ to Group 0;
2. Set CICC_CTLR.FIQEn to 1;

Then in NuttX:
1. implement the arm_decodefiq and directly crash in it;
2. provide interface to change the IRQ to FIQ, e.g. change the
   watchdog IRQ to FIQ, so the watchdog can trigger even with the
   interrupt disabled (up_irq_save() called);

Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
Signed-off-by: ligd <liguiding1@xiaomi.com>
2024-03-19 18:24:42 +09:00
..
include armv7-a/gicv2: move IRQ to group1 and group0 as the FIQ 2024-03-19 18:24:42 +09:00
src armv7-a/gicv2: move IRQ to group1 and group0 as the FIQ 2024-03-19 18:24:42 +09:00
CMakeLists.txt build: add initial cmake build system 2023-07-08 13:50:48 +08:00
Kconfig arch/xmc4 Add tickless support 2024-03-11 13:56:07 -03:00