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The following commit(s) were added to refs/heads/master by this push:
new 351db57e35 arch/arm/rp23xx: Set priority for svcall exception
351db57e35 is described below
commit 351db57e35972f08017ea077bc3284e26ebea802
Author: Ian Douglas Scott <[email protected]>
AuthorDate: Sun Jan 12 20:18:55 2025 -0800
arch/arm/rp23xx: Set priority for svcall exception
Fixes https://github.com/apache/nuttx/issues/15503.
Signed-off-by: Ian Douglas Scott <[email protected]>
---
arch/arm/src/rp23xx/rp23xx_irq.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/arch/arm/src/rp23xx/rp23xx_irq.c b/arch/arm/src/rp23xx/rp23xx_irq.c
index 450e2315b9..2bf5e4975e 100644
--- a/arch/arm/src/rp23xx/rp23xx_irq.c
+++ b/arch/arm/src/rp23xx/rp23xx_irq.c
@@ -181,6 +181,27 @@ static int rp23xx_reserved(int irq, void *context, void
*arg)
}
#endif
+/****************************************************************************
+ * 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 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);
+}
+
/****************************************************************************
* Name: rp23xx_clrpend
*
@@ -276,6 +297,8 @@ void up_irqinitialize(void)
irq_attach(RP23XX_IRQ_SVCALL, arm_svcall, NULL);
irq_attach(RP23XX_IRQ_HARDFAULT, arm_hardfault, NULL);
+ rp23xx_prioritize_syscall(NVIC_SYSH_SVCALL_PRIORITY);
+
/* Attach all other processor exceptions (except reset and sys tick) */
#ifdef CONFIG_DEBUG_FEATURES
