[rtems commit] bsps/arm: Rely on initialized vector table

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    016bcb3f9d82a0c02aab87326ce94bee0365a956
Changeset: http://git.rtems.org/rtems/commit/?id=016bcb3f9d82a0c02aab87326ce94bee0365a956

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Tue Dec 22 13:10:53 2020 +0100

bsps/arm: Rely on initialized vector table

The arm_cp15_set_exception_handler() is a complicated function which
should be avoided if possible.

Update #4202.

---

 bsps/arm/include/dev/irq/arm-gic-arch.h | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/bsps/arm/include/dev/irq/arm-gic-arch.h b/bsps/arm/include/dev/irq/arm-gic-arch.h
index fe981da..c9931be 100644
--- a/bsps/arm/include/dev/irq/arm-gic-arch.h
+++ b/bsps/arm/include/dev/irq/arm-gic-arch.h
@@ -37,7 +37,6 @@
 #ifndef _RTEMS_DEV_IRQ_ARM_GIC_ARM_H
 #define _RTEMS_DEV_IRQ_ARM_GIC_ARM_H
 
-#include <libcpu/arm-cp15.h>
 #include <bsp/irq-generic.h>
 #include <rtems/score/armv4.h>
 
@@ -55,10 +54,10 @@ static inline void arm_interrupt_handler_dispatch(rtems_vector_number vector)
 
 static inline void arm_interrupt_facility_set_exception_handler(void)
 {
-  arm_cp15_set_exception_handler(
-    ARM_EXCEPTION_IRQ,
-    _ARMV4_Exception_interrupt
-  );
+  /*
+   * There is no need to install _ARMV4_Exception_interrupt() since this
+   * handler is already set by start.S.
+   */
 }
 
 #ifdef __cplusplus