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Add ability to override number of IRQ vectors #2200

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Add ability to override number of IRQ vectors #2200

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e79ede8
Add ability to override number of vtor IRQs
will-v-pi Jan 21, 2025
de16925
Add PICO_CONFIG comment
will-v-pi Jan 21, 2025
2fe1e0a
Move into platform.h, and prevent use of irqs without entries
will-v-pi Jan 21, 2025
c3420d5
Add min and max values to PICO_CONFIG comment
will-v-pi Jan 22, 2025
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7 changes: 6 additions & 1 deletion src/rp2040/pico_platform/include/pico/platform.h
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Original file line number Diff line number Diff line change
Expand Up @@ -66,8 +66,13 @@
#define PICO_RP2040_B2_SUPPORTED 1
#endif

// PICO_CONFIG: PICO_VECTOR_TABLE_NUM_IRQS, Number of IRQ vectors to include in the vector table, type=int, default=NUM_IRQS, advanced=true, group=pico_platform
#ifndef PICO_VECTOR_TABLE_NUM_IRQS
#define PICO_VECTOR_TABLE_NUM_IRQS NUM_IRQS
#endif

#ifndef PICO_RAM_VECTOR_TABLE_SIZE
#define PICO_RAM_VECTOR_TABLE_SIZE (VTABLE_FIRST_IRQ + NUM_IRQS)
#define PICO_RAM_VECTOR_TABLE_SIZE (VTABLE_FIRST_IRQ + PICO_VECTOR_TABLE_NUM_IRQS)
#endif

// PICO_CONFIG: PICO_CLKDIV_ROUND_NEAREST, True if floating point clock divisors should be rounded to the nearest possible clock divisor by default rather than rounding down, type=bool, default=1, group=pico_platform
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8 changes: 6 additions & 2 deletions src/rp2350/pico_platform/include/pico/platform.h
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Expand Up @@ -54,8 +54,13 @@
#define PICO_NO_RAM_VECTOR_TABLE 0
#endif

// PICO_CONFIG: PICO_VECTOR_TABLE_NUM_IRQS, Number of IRQ vectors to include in the vector table, type=int, default=NUM_IRQS, advanced=true, group=pico_platform
#ifndef PICO_VECTOR_TABLE_NUM_IRQS
#define PICO_VECTOR_TABLE_NUM_IRQS NUM_IRQS
#endif

#ifndef PICO_RAM_VECTOR_TABLE_SIZE
#define PICO_RAM_VECTOR_TABLE_SIZE (VTABLE_FIRST_IRQ + NUM_IRQS)
#define PICO_RAM_VECTOR_TABLE_SIZE (VTABLE_FIRST_IRQ + PICO_VECTOR_TABLE_NUM_IRQS)
#endif

// PICO_CONFIG: PICO_USE_STACK_GUARDS, Enable/disable stack guards, type=bool, default=0, advanced=true, group=pico_platform
Expand Down Expand Up @@ -284,4 +289,3 @@ __force_inline static int32_t __mul_instruction(int32_t a, int32_t b) {
#endif // __ASSEMBLER__

#endif

2 changes: 1 addition & 1 deletion src/rp2_common/hardware_irq/include/hardware/irq.h
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Expand Up @@ -195,7 +195,7 @@ extern "C" {
typedef void (*irq_handler_t)(void);

static inline void check_irq_param(__unused uint num) {
invalid_params_if(HARDWARE_IRQ, num >= NUM_IRQS);
invalid_params_if(HARDWARE_IRQ, num >= PICO_VECTOR_TABLE_NUM_IRQS);
}

/*! \brief Set specified interrupt's priority
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4 changes: 2 additions & 2 deletions src/rp2_common/pico_crt0/crt0.S
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Expand Up @@ -53,7 +53,7 @@ __vectors:
#else

.macro if_irq_word num func
.if \num < NUM_IRQS
.if \num < PICO_VECTOR_TABLE_NUM_IRQS
.word \func
.endif
.endm
Expand Down Expand Up @@ -142,7 +142,7 @@ if_irq_word 76 isr_irq76
if_irq_word 77 isr_irq77
if_irq_word 78 isr_irq78
if_irq_word 79 isr_irq79
#if NUM_IRQS > 80
#if PICO_VECTOR_TABLE_NUM_IRQS > 80
#error more IRQ entries required
#endif
#endif
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