bsp/riscv: Add PLIC support

Update #3433.

bsps/include/bsp/fatal.h

@@ -147,7 +147,11 @@ typedef enum {
   RISCV_FATAL_CLOCK_IRQ_INSTALL,
   RISCV_FATAL_NO_CLINT_REG_IN_DEVICE_TREE,
   RISCV_FATAL_INVALID_HART_REG_IN_DEVICE_TREE,
-  RISCV_FATAL_INVALID_CLINT_IRQS_EXTENDED_IN_DEVICE_TREE
+  RISCV_FATAL_INVALID_CLINT_IRQS_EXTENDED_IN_DEVICE_TREE,
+  RISCV_FATAL_NO_PLIC_REG_IN_DEVICE_TREE,
+  RISCV_FATAL_INVALID_PLIC_NDEV_IN_DEVICE_TREE,
+  RISCV_FATAL_TOO_LARGE_PLIC_NDEV_IN_DEVICE_TREE,
+  RISCV_FATAL_INVALID_INTERRUPT_AFFINITY
 } bsp_fatal_code;
 
 RTEMS_NO_RETURN static inline void

bsps/riscv/riscv/include/bsp.h

@@ -44,6 +44,8 @@
 extern "C" {
 #endif
 
+#define BSP_FEATURE_IRQ_EXTENSION
+
 #define BSP_FDT_IS_SUPPORTED
 
 #ifdef __cplusplus

bsps/riscv/riscv/include/bsp/irq.h

@@ -42,6 +42,7 @@
 #include <bsp.h>
 #include <rtems/irq.h>
 #include <rtems/irq-extension.h>
+#include <rtems/score/processormask.h>
 
 #define RISCV_INTERRUPT_VECTOR_SOFTWARE 0
 
@@ -49,10 +50,24 @@
 
 #define RISCV_INTERRUPT_VECTOR_EXTERNAL(x) ((x) + 2)
 
+#define RISCV_INTERRUPT_VECTOR_IS_EXTERNAL(x) ((x) >= 2)
+
+#define RISCV_INTERRUPT_VECTOR_EXTERNAL_TO_INDEX(x) ((x) - 2)
+
 #define BSP_INTERRUPT_VECTOR_MIN 0
 
 #define BSP_INTERRUPT_VECTOR_MAX RISCV_INTERRUPT_VECTOR_EXTERNAL(RISCV_MAXIMUM_EXTERNAL_INTERRUPTS - 1)
 
+void bsp_interrupt_set_affinity(
+  rtems_vector_number vector,
+  const Processor_mask *affinity
+);
+
+void bsp_interrupt_get_affinity(
+  rtems_vector_number vector,
+  Processor_mask *affinity
+);
+
 #endif /* ASM */
 
 #endif /* LIBBSP_GENERIC_RISCV_IRQ_H */

bsps/riscv/riscv/start/bspsmp.c

@@ -40,7 +40,7 @@ void bsp_start_on_secondary_processor(Per_CPU_Control *cpu_self)
     cpu_index_self < rtems_configuration_get_maximum_processors()
       && _SMP_Should_start_processor(cpu_index_self)
   ) {
-    set_csr(mie, MIP_MSIP);
+    set_csr(mie, MIP_MSIP | MIP_MEIP);
     _SMP_Start_multitasking_on_secondary_processor(cpu_self);
   } else {
     _CPU_Thread_Idle_body(0);