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Disable core 0 SIO FIFO IRQ during core1 launch sequence #375

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Merged
kilograham merged 1 commit into from
May 4, 2021
Merged

Disable core 0 SIO FIFO IRQ during core1 launch sequence #375

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5 changes: 5 additions & 0 deletions src/rp2_common/pico_multicore/multicore.c
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,9 @@ void multicore_launch_core1(void (*entry)(void)) {
void multicore_launch_core1_raw(void (*entry)(void), uint32_t *sp, uint32_t vector_table) {
uint32_t cmd_sequence[] = {0, 0, 1, (uintptr_t) vector_table, (uintptr_t) sp, (uintptr_t) entry};

bool enabled = irq_is_enabled(SIO_IRQ_PROC0);
irq_set_enabled(SIO_IRQ_PROC0, false);

uint seq = 0;
do {
uint cmd = cmd_sequence[seq];
Expand All @@ -142,6 +145,8 @@ void multicore_launch_core1_raw(void (*entry)(void), uint32_t *sp, uint32_t vect
// move to next state on correct response otherwise start over
seq = cmd == response ? seq + 1 : 0;
} while (seq < count_of(cmd_sequence));

irq_set_enabled(SIO_IRQ_PROC0, enabled);
}

#define LOCKOUT_MAGIC_START 0x73a8831eu
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