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Copy RP2040 vector table to RAM on startup ()

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...this reduces possible latency when invoking interrupt handlers by
mitigating XIP cache misses which are not existent when running code from
RAM.
This commit is contained in:
Stefan Kerkmann 2022-09-22 23:48:20 +02:00 committed by GitHub
parent 828a1db035
commit b8ffaa6331
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1 changed files with 2 additions and 1 deletions

3
platforms/chibios/vendors/RP/RP2040.mk vendored
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@ -11,7 +11,8 @@ endif
# Raspberry Pi Pico SDK Support # Raspberry Pi Pico SDK Support
############################################################################## ##############################################################################
ADEFS += -DCRT0_VTOR_INIT=1 \ ADEFS += -DCRT0_VTOR_INIT=1 \
-DCRT0_EXTRA_CORES_NUMBER=0 -DCRT0_EXTRA_CORES_NUMBER=0 \
-DCRT0_INIT_VECTORS=1
CFLAGS += -DPICO_NO_FPGA_CHECK \ CFLAGS += -DPICO_NO_FPGA_CHECK \
-DNDEBUG -DNDEBUG