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arch: riscv: add an option for empty spurious interrupt handler #2

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merged 1 commit into from
Jul 8, 2024
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arch: riscv: add an option for empty spurious interrupt handler #2

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7 changes: 7 additions & 0 deletions arch/riscv/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -225,6 +225,13 @@ config RISCV_RESERVED_IRQ_ISR_TABLES_OFFSET
properly sized to take into account this offset. This is a hidden
option which needs to be set per architecture and left alone.

config RISCV_EMPTY_IRQ_SPURIOUS
bool "Create empty spurious interrupt handler"
help
This option changes body of spurious interrupt handler. When enabled,
handler contains only an infinite while loop, when disabled, handler
contains the whole Zephyr fault handling procedure.

config NUM_IRQS
int

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7 changes: 7 additions & 0 deletions arch/riscv/core/irq_manage.c
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Expand Up @@ -19,6 +19,12 @@ LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);

FUNC_NORETURN void z_irq_spurious(const void *unused)
{
#ifdef CONFIG_RISCV_EMPTY_IRQ_SPURIOUS
while (1) {
}

CODE_UNREACHABLE;
#else
unsigned long mcause;

ARG_UNUSED(unused);
Expand All @@ -37,6 +43,7 @@ FUNC_NORETURN void z_irq_spurious(const void *unused)
}
#endif
z_riscv_fatal_error(K_ERR_SPURIOUS_IRQ, NULL);
#endif
}

#ifdef CONFIG_DYNAMIC_INTERRUPTS
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