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rp23xx_irq.c: fix regression from https://github.com/apache/nuttx/pull/15073 #15505

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rp23xx_irq.c: fix regression from https://github.com/apache/nuttx/pull/15073 #15505

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25 changes: 25 additions & 0 deletions arch/arm/src/rp23xx/rp23xx_irq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -217,6 +217,27 @@ static inline void rp23xx_clrpend(int irq)
}
}

/****************************************************************************
* Name: rp23xx_prioritize_syscall
*
* Description:
* Set the priority of an exception. This function may be needed
* internally even if support for prioritized interrupts is not enabled.
*
****************************************************************************/

static inline_function void rp23xx_prioritize_syscall(int priority)
{
uint32_t regval;

/* SVCALL is system handler 11 */

regval = getreg32(NVIC_SYSH8_11_PRIORITY);
regval &= ~NVIC_SYSH_PRIORITY_PR11_MASK;
regval |= (priority << NVIC_SYSH_PRIORITY_PR11_SHIFT);
putreg32(regval, NVIC_SYSH8_11_PRIORITY);
}

/****************************************************************************
* Public Functions
****************************************************************************/
Expand Down Expand Up @@ -276,6 +297,10 @@ void up_irqinitialize(void)
irq_attach(RP23XX_IRQ_SVCALL, arm_svcall, NULL);
irq_attach(RP23XX_IRQ_HARDFAULT, arm_hardfault, NULL);

/* Set the priority of the SVCall interrupt */

rp23xx_prioritize_syscall(NVIC_SYSH_SVCALL_PRIORITY);

/* Attach all other processor exceptions (except reset and sys tick) */

#ifdef CONFIG_DEBUG_FEATURES
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