From b8ffaa63310ec7cc29de0aaa562457d87e50f837 Mon Sep 17 00:00:00 2001
From: Stefan Kerkmann <karlk90@pm.me>
Date: Thu, 22 Sep 2022 23:48:20 +0200
Subject: [PATCH] Copy RP2040 vector table to RAM on startup (#18424)
...this reduces possible latency when invoking interrupt handlers by
mitigating XIP cache misses which are not existent when running code from
RAM.
---
platforms/chibios/vendors/RP/RP2040.mk | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/platforms/chibios/vendors/RP/RP2040.mk b/platforms/chibios/vendors/RP/RP2040.mk
index de426c9c40..efa3fef13f 100644
--- a/platforms/chibios/vendors/RP/RP2040.mk
+++ b/platforms/chibios/vendors/RP/RP2040.mk
@@ -11,7 +11,8 @@ endif
# Raspberry Pi Pico SDK Support
##############################################################################
ADEFS += -DCRT0_VTOR_INIT=1 \
- -DCRT0_EXTRA_CORES_NUMBER=0
+ -DCRT0_EXTRA_CORES_NUMBER=0 \
+ -DCRT0_INIT_VECTORS=1
CFLAGS += -DPICO_NO_FPGA_CHECK \
-DNDEBUG