From 5762872053de0f2e181ad2ef8c5cb47d9b1f6aec Mon Sep 17 00:00:00 2001
From: Mikey Sklar <mikeysklar@gmail.com>
Date: Tue, 15 Sep 2026 08:27:54 -0700
Subject: [PATCH] atmel-samd: load native .mpy by default on SAMD21 boards

Turn on CIRCUITPY_LOAD_NATIVE for SAMD21 boards. It fits on 25 of them.
The other fifty have too little flash to spare and opt out in their own
mpconfigboard.mk:

  adafruit_trrs_trinkey_m0, arduino_mkr1300, arduino_mkrzero,
  arduino_nano_33_iot, arduino_zero, bast_pro_mini_m0, catwan_usbstick,
  circuitbrains_basic_m0, circuitplayground_express_displayio,
  cp_sapling_m0, cp_sapling_m0_revb, datum_distance, datum_imu,
  datum_light, datum_weather, dynossat_edu_eps, escornabot_makech,
  feather_m0_adalogger, feather_m0_basic, feather_m0_express,
  feather_m0_rfm69, feather_m0_rfm9x, feather_m0_supersized, fluff_m0,
  gemma_m0, huntercat_nfc, itsybitsy_m0_express, meowmeow,
  metro_m0_express, ndgarage_ndbit6, ndgarage_ndbit6_v2, pewpew_lcd,
  pewpew10, picoplanet, pyruler, qtpy_m0, qtpy_m0_haxpress,
  seeeduino_xiao, sensebox_mcu, shirtty, snekboard,
  sparkfun_qwiic_micro_no_flash, sparkfun_redboard_turbo,
  sparkfun_samd21_dev, sparkfun_samd21_mini, stackrduino_m0_pro,
  stringcar_m0_express, trinket_m0, trinket_m0_haxpress, uchip

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
---
 .../atmel-samd/boards/adafruit_trrs_trinkey_m0/mpconfigboard.mk | 1 +
 ports/atmel-samd/boards/arduino_mkr1300/mpconfigboard.mk        | 1 +
 ports/atmel-samd/boards/arduino_mkrzero/mpconfigboard.mk        | 1 +
 ports/atmel-samd/boards/arduino_nano_33_iot/mpconfigboard.mk    | 1 +
 ports/atmel-samd/boards/arduino_zero/mpconfigboard.mk           | 1 +
 ports/atmel-samd/boards/bast_pro_mini_m0/mpconfigboard.mk       | 1 +
 ports/atmel-samd/boards/catwan_usbstick/mpconfigboard.mk        | 1 +
 ports/atmel-samd/boards/circuitbrains_basic_m0/mpconfigboard.mk | 1 +
 .../boards/circuitplayground_express_displayio/mpconfigboard.mk | 1 +
 ports/atmel-samd/boards/cp_sapling_m0/mpconfigboard.mk          | 1 +
 ports/atmel-samd/boards/cp_sapling_m0_revb/mpconfigboard.mk     | 1 +
 ports/atmel-samd/boards/datum_distance/mpconfigboard.mk         | 1 +
 ports/atmel-samd/boards/datum_imu/mpconfigboard.mk              | 1 +
 ports/atmel-samd/boards/datum_light/mpconfigboard.mk            | 1 +
 ports/atmel-samd/boards/datum_weather/mpconfigboard.mk          | 1 +
 ports/atmel-samd/boards/dynossat_edu_eps/mpconfigboard.mk       | 1 +
 ports/atmel-samd/boards/escornabot_makech/mpconfigboard.mk      | 1 +
 ports/atmel-samd/boards/feather_m0_adalogger/mpconfigboard.mk   | 1 +
 ports/atmel-samd/boards/feather_m0_basic/mpconfigboard.mk       | 1 +
 ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk     | 1 +
 ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.mk       | 1 +
 ports/atmel-samd/boards/feather_m0_rfm9x/mpconfigboard.mk       | 1 +
 ports/atmel-samd/boards/feather_m0_supersized/mpconfigboard.mk  | 1 +
 ports/atmel-samd/boards/fluff_m0/mpconfigboard.mk               | 1 +
 ports/atmel-samd/boards/gemma_m0/mpconfigboard.mk               | 1 +
 ports/atmel-samd/boards/huntercat_nfc/mpconfigboard.mk          | 1 +
 ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk   | 1 +
 ports/atmel-samd/boards/meowmeow/mpconfigboard.mk               | 1 +
 ports/atmel-samd/boards/metro_m0_express/mpconfigboard.mk       | 1 +
 ports/atmel-samd/boards/ndgarage_ndbit6/mpconfigboard.mk        | 1 +
 ports/atmel-samd/boards/ndgarage_ndbit6_v2/mpconfigboard.mk     | 1 +
 ports/atmel-samd/boards/pewpew10/mpconfigboard.mk               | 1 +
 ports/atmel-samd/boards/pewpew_lcd/mpconfigboard.mk             | 1 +
 ports/atmel-samd/boards/picoplanet/mpconfigboard.mk             | 1 +
 ports/atmel-samd/boards/pyruler/mpconfigboard.mk                | 1 +
 ports/atmel-samd/boards/qtpy_m0/mpconfigboard.mk                | 1 +
 ports/atmel-samd/boards/qtpy_m0_haxpress/mpconfigboard.mk       | 1 +
 ports/atmel-samd/boards/seeeduino_xiao/mpconfigboard.mk         | 1 +
 ports/atmel-samd/boards/sensebox_mcu/mpconfigboard.mk           | 1 +
 ports/atmel-samd/boards/shirtty/mpconfigboard.mk                | 1 +
 ports/atmel-samd/boards/snekboard/mpconfigboard.mk              | 1 +
 .../boards/sparkfun_qwiic_micro_no_flash/mpconfigboard.mk       | 1 +
 .../atmel-samd/boards/sparkfun_redboard_turbo/mpconfigboard.mk  | 1 +
 ports/atmel-samd/boards/sparkfun_samd21_dev/mpconfigboard.mk    | 1 +
 ports/atmel-samd/boards/sparkfun_samd21_mini/mpconfigboard.mk   | 1 +
 ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk     | 1 +
 ports/atmel-samd/boards/stringcar_m0_express/mpconfigboard.mk   | 1 +
 ports/atmel-samd/boards/trinket_m0/mpconfigboard.mk             | 1 +
 ports/atmel-samd/boards/trinket_m0_haxpress/mpconfigboard.mk    | 1 +
 ports/atmel-samd/boards/uchip/mpconfigboard.mk                  | 1 +
 ports/atmel-samd/mpconfigport.mk                                | 2 ++
 51 files changed, 52 insertions(+)

diff --git a/ports/atmel-samd/boards/adafruit_trrs_trinkey_m0/mpconfigboard.mk b/ports/atmel-samd/boards/adafruit_trrs_trinkey_m0/mpconfigboard.mk
index e13c6620e84..b2b0e176c3f 100644
--- a/ports/atmel-samd/boards/adafruit_trrs_trinkey_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/adafruit_trrs_trinkey_m0/mpconfigboard.mk
@@ -17,6 +17,7 @@ CIRCUITPY_KEYPAD = 1
 CIRCUITPY_KEYPAD_DEMUX = 0
 CIRCUITPY_KEYPAD_KEYMATRIX = 0
 CIRCUITPY_KEYPAD_SHIFTREGISTERKEYS = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_PWMIO = 0
 CIRCUITPY_RAINBOWIO = 0
 CIRCUITPY_ROTARYIO = 0
diff --git a/ports/atmel-samd/boards/arduino_mkr1300/mpconfigboard.mk b/ports/atmel-samd/boards/arduino_mkr1300/mpconfigboard.mk
index 5d02fe3824d..2ae4f1fd46c 100644
--- a/ports/atmel-samd/boards/arduino_mkr1300/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/arduino_mkr1300/mpconfigboard.mk
@@ -12,4 +12,5 @@ INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
 
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/arduino_mkrzero/mpconfigboard.mk b/ports/atmel-samd/boards/arduino_mkrzero/mpconfigboard.mk
index 4f058e4f2a4..24e238d6c62 100644
--- a/ports/atmel-samd/boards/arduino_mkrzero/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/arduino_mkrzero/mpconfigboard.mk
@@ -11,3 +11,4 @@ CIRCUITPY_BUILD_EXTENSIONS = bin,uf2
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/arduino_nano_33_iot/mpconfigboard.mk b/ports/atmel-samd/boards/arduino_nano_33_iot/mpconfigboard.mk
index a53261995d2..72557969495 100644
--- a/ports/atmel-samd/boards/arduino_nano_33_iot/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/arduino_nano_33_iot/mpconfigboard.mk
@@ -12,5 +12,6 @@ INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
 
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
 CIRCUITPY_NVM = 0
diff --git a/ports/atmel-samd/boards/arduino_zero/mpconfigboard.mk b/ports/atmel-samd/boards/arduino_zero/mpconfigboard.mk
index 0c2df96c5da..59b84a7fbf4 100644
--- a/ports/atmel-samd/boards/arduino_zero/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/arduino_zero/mpconfigboard.mk
@@ -12,4 +12,5 @@ INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
 
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/bast_pro_mini_m0/mpconfigboard.mk b/ports/atmel-samd/boards/bast_pro_mini_m0/mpconfigboard.mk
index 055e6b19e26..29faabc7cfc 100644
--- a/ports/atmel-samd/boards/bast_pro_mini_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/bast_pro_mini_m0/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/catwan_usbstick/mpconfigboard.mk b/ports/atmel-samd/boards/catwan_usbstick/mpconfigboard.mk
index 8724e0d4bb2..4379fdab4f2 100644
--- a/ports/atmel-samd/boards/catwan_usbstick/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/catwan_usbstick/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/circuitbrains_basic_m0/mpconfigboard.mk b/ports/atmel-samd/boards/circuitbrains_basic_m0/mpconfigboard.mk
index 121becc472d..44fba9ee389 100755
--- a/ports/atmel-samd/boards/circuitbrains_basic_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/circuitbrains_basic_m0/mpconfigboard.mk
@@ -12,4 +12,5 @@ LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
 CIRCUITPY_ERRNO = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
index ce049d6744a..dbbabb7079f 100644
--- a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
@@ -21,6 +21,7 @@ CIRCUITPY_USB_MIDI = 0
 CIRCUITPY_VECTORIO = 0
 CIRCUITPY_BITMAPFILTER = 0
 CIRCUITPY_BITMAPTOOLS = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_PARALLELDISPLAYBUS = 0
 
 # Include these Python libraries in firmware.
diff --git a/ports/atmel-samd/boards/cp_sapling_m0/mpconfigboard.mk b/ports/atmel-samd/boards/cp_sapling_m0/mpconfigboard.mk
index 4b32f1f623c..16aecbd9fa0 100644
--- a/ports/atmel-samd/boards/cp_sapling_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/cp_sapling_m0/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/cp_sapling_m0_revb/mpconfigboard.mk b/ports/atmel-samd/boards/cp_sapling_m0_revb/mpconfigboard.mk
index 6bf1d730792..6a76e61c43b 100644
--- a/ports/atmel-samd/boards/cp_sapling_m0_revb/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/cp_sapling_m0_revb/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/datum_distance/mpconfigboard.mk b/ports/atmel-samd/boards/datum_distance/mpconfigboard.mk
index f51bd9a5c91..d23208151f9 100644
--- a/ports/atmel-samd/boards/datum_distance/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/datum_distance/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/datum_imu/mpconfigboard.mk b/ports/atmel-samd/boards/datum_imu/mpconfigboard.mk
index 9c3b6423307..409f53bba7a 100644
--- a/ports/atmel-samd/boards/datum_imu/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/datum_imu/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/datum_light/mpconfigboard.mk b/ports/atmel-samd/boards/datum_light/mpconfigboard.mk
index a34b751042b..ff3b34a9fc5 100644
--- a/ports/atmel-samd/boards/datum_light/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/datum_light/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/datum_weather/mpconfigboard.mk b/ports/atmel-samd/boards/datum_weather/mpconfigboard.mk
index 01a90636546..03e2bf7e4b3 100644
--- a/ports/atmel-samd/boards/datum_weather/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/datum_weather/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/dynossat_edu_eps/mpconfigboard.mk b/ports/atmel-samd/boards/dynossat_edu_eps/mpconfigboard.mk
index 9a67840c56f..943fcbddda8 100644
--- a/ports/atmel-samd/boards/dynossat_edu_eps/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/dynossat_edu_eps/mpconfigboard.mk
@@ -16,5 +16,6 @@ CIRCUITPY_BITBANGIO = 0
 CIRCUITPY_BITMAPFILTER = 0
 CIRCUITPY_BITMAPTOOLS = 0
 CIRCUITPY_BUSDEVICE = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_TOUCHIO = 0
 CIRCUITPY_ROTARYIO = 0
diff --git a/ports/atmel-samd/boards/escornabot_makech/mpconfigboard.mk b/ports/atmel-samd/boards/escornabot_makech/mpconfigboard.mk
index 0d63829c7fc..34b6bed4cd1 100644
--- a/ports/atmel-samd/boards/escornabot_makech/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/escornabot_makech/mpconfigboard.mk
@@ -10,4 +10,5 @@ INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
 
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_USB_MIDI = 0
diff --git a/ports/atmel-samd/boards/feather_m0_adalogger/mpconfigboard.mk b/ports/atmel-samd/boards/feather_m0_adalogger/mpconfigboard.mk
index b0e01e43a50..5b79b491153 100644
--- a/ports/atmel-samd/boards/feather_m0_adalogger/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/feather_m0_adalogger/mpconfigboard.mk
@@ -11,3 +11,4 @@ CIRCUITPY_BUILD_EXTENSIONS = bin,uf2
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/feather_m0_basic/mpconfigboard.mk b/ports/atmel-samd/boards/feather_m0_basic/mpconfigboard.mk
index f54da83f112..6d47d88eac7 100644
--- a/ports/atmel-samd/boards/feather_m0_basic/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/feather_m0_basic/mpconfigboard.mk
@@ -11,3 +11,4 @@ CIRCUITPY_BUILD_EXTENSIONS = bin,uf2
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk b/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk
index 1152fb4acc4..8e5b8997ae1 100644
--- a/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk
@@ -12,4 +12,5 @@ LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
 CIRCUITPY_ERRNO = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.mk b/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.mk
index aa9055a5e39..46ab68dba9e 100644
--- a/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/feather_m0_rfm69/mpconfigboard.mk
@@ -16,6 +16,7 @@ CIRCUITPY_FULL_BUILD = 0
 # Many I/O functions are not available.
 CIRCUITPY_ANALOGIO = 1
 CIRCUITPY_BUSDEVICE = 1
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
 CIRCUITPY_ROTARYIO = 0
 CIRCUITPY_RTC = 0
diff --git a/ports/atmel-samd/boards/feather_m0_rfm9x/mpconfigboard.mk b/ports/atmel-samd/boards/feather_m0_rfm9x/mpconfigboard.mk
index 3bc3fa3ed0d..fe5c4e5f6ca 100644
--- a/ports/atmel-samd/boards/feather_m0_rfm9x/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/feather_m0_rfm9x/mpconfigboard.mk
@@ -16,6 +16,7 @@ CIRCUITPY_FULL_BUILD = 0
 # A number of modules are removed for RFM9x to make room for frozen libraries.
 # Many I/O functions are not available.
 CIRCUITPY_ANALOGIO = 1
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_ROTARYIO = 0
 CIRCUITPY_RTC = 0
 CIRCUITPY_USB_MIDI = 0
diff --git a/ports/atmel-samd/boards/feather_m0_supersized/mpconfigboard.mk b/ports/atmel-samd/boards/feather_m0_supersized/mpconfigboard.mk
index dd58e8d1ce5..9c97817ec1b 100644
--- a/ports/atmel-samd/boards/feather_m0_supersized/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/feather_m0_supersized/mpconfigboard.mk
@@ -12,4 +12,5 @@ LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
 CIRCUITPY_ERRNO = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/fluff_m0/mpconfigboard.mk b/ports/atmel-samd/boards/fluff_m0/mpconfigboard.mk
index 8825143d021..adc62e1d1c0 100644
--- a/ports/atmel-samd/boards/fluff_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/fluff_m0/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/gemma_m0/mpconfigboard.mk b/ports/atmel-samd/boards/gemma_m0/mpconfigboard.mk
index f37b8c7be73..fc917dfbe91 100644
--- a/ports/atmel-samd/boards/gemma_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/gemma_m0/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/huntercat_nfc/mpconfigboard.mk b/ports/atmel-samd/boards/huntercat_nfc/mpconfigboard.mk
index 5e9a1372b45..ccb5be426bb 100644
--- a/ports/atmel-samd/boards/huntercat_nfc/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/huntercat_nfc/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 SPI_FLASH_FILESYSTEM = 1
 EXTERNAL_FLASH_DEVICES = "W25Q16JVxQ"
 LONGINT_IMPL = MPZ
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk b/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk
index 6dce23e506d..3c63ec7fbd1 100644
--- a/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/itsybitsy_m0_express/mpconfigboard.mk
@@ -12,4 +12,5 @@ LONGINT_IMPL = MPZ
 
 CIRCUITPY_BITBANG_APA102 = 1
 
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_PULSEIO = 0
diff --git a/ports/atmel-samd/boards/meowmeow/mpconfigboard.mk b/ports/atmel-samd/boards/meowmeow/mpconfigboard.mk
index ff96231b841..728e78b7a94 100644
--- a/ports/atmel-samd/boards/meowmeow/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/meowmeow/mpconfigboard.mk
@@ -11,3 +11,4 @@ CIRCUITPY_PWMIO = 0
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/metro_m0_express/mpconfigboard.mk b/ports/atmel-samd/boards/metro_m0_express/mpconfigboard.mk
index d4801359cf8..dca4a44eb4a 100644
--- a/ports/atmel-samd/boards/metro_m0_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/metro_m0_express/mpconfigboard.mk
@@ -12,4 +12,5 @@ LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
 CIRCUITPY_ERRNO = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/ndgarage_ndbit6/mpconfigboard.mk b/ports/atmel-samd/boards/ndgarage_ndbit6/mpconfigboard.mk
index b60852d470a..dcedfad136a 100644
--- a/ports/atmel-samd/boards/ndgarage_ndbit6/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/ndgarage_ndbit6/mpconfigboard.mk
@@ -10,3 +10,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/ndgarage_ndbit6_v2/mpconfigboard.mk b/ports/atmel-samd/boards/ndgarage_ndbit6_v2/mpconfigboard.mk
index 58ef17ce034..50747b74c1b 100644
--- a/ports/atmel-samd/boards/ndgarage_ndbit6_v2/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/ndgarage_ndbit6_v2/mpconfigboard.mk
@@ -10,3 +10,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/pewpew10/mpconfigboard.mk b/ports/atmel-samd/boards/pewpew10/mpconfigboard.mk
index 869ad42fa97..9d3461947e8 100644
--- a/ports/atmel-samd/boards/pewpew10/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/pewpew10/mpconfigboard.mk
@@ -10,6 +10,7 @@ INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
 
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_PEW = 1
 CIRCUITPY_ROTARYIO = 0
 CIRCUITPY_RTC = 0
diff --git a/ports/atmel-samd/boards/pewpew_lcd/mpconfigboard.mk b/ports/atmel-samd/boards/pewpew_lcd/mpconfigboard.mk
index 58047f2506e..e59e4d566f3 100644
--- a/ports/atmel-samd/boards/pewpew_lcd/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/pewpew_lcd/mpconfigboard.mk
@@ -47,6 +47,7 @@ CIRCUITPY_BUSDEVICE = 0
 CIRCUITPY_FRAMEBUFFERIO = 0
 CIRCUITPY_FREQUENCYIO = 0
 CIRCUITPY_I2CTARGET = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_MSGPACK = 0
 CIRCUITPY_NVM = 0
 CIRCUITPY_PIXELBUF = 0
diff --git a/ports/atmel-samd/boards/picoplanet/mpconfigboard.mk b/ports/atmel-samd/boards/picoplanet/mpconfigboard.mk
index 5769493579c..6255b3442b3 100644
--- a/ports/atmel-samd/boards/picoplanet/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/picoplanet/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/pyruler/mpconfigboard.mk b/ports/atmel-samd/boards/pyruler/mpconfigboard.mk
index 82ed4456587..f4d9ec165f9 100644
--- a/ports/atmel-samd/boards/pyruler/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/pyruler/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/qtpy_m0/mpconfigboard.mk b/ports/atmel-samd/boards/qtpy_m0/mpconfigboard.mk
index a53694e74e6..1b3ea034ffe 100644
--- a/ports/atmel-samd/boards/qtpy_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/qtpy_m0/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/qtpy_m0_haxpress/mpconfigboard.mk b/ports/atmel-samd/boards/qtpy_m0_haxpress/mpconfigboard.mk
index 1aca9134674..58f2c5036e7 100644
--- a/ports/atmel-samd/boards/qtpy_m0_haxpress/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/qtpy_m0_haxpress/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 LONGINT_IMPL = MPZ
 SPI_FLASH_FILESYSTEM = 1
 EXTERNAL_FLASH_DEVICES = "GD25Q16C,W25Q16JVxQ,W25Q32FV"
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/seeeduino_xiao/mpconfigboard.mk b/ports/atmel-samd/boards/seeeduino_xiao/mpconfigboard.mk
index 1334c8312c9..8f233653b94 100644
--- a/ports/atmel-samd/boards/seeeduino_xiao/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/seeeduino_xiao/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/sensebox_mcu/mpconfigboard.mk b/ports/atmel-samd/boards/sensebox_mcu/mpconfigboard.mk
index 37c869e972b..4a184e845ed 100644
--- a/ports/atmel-samd/boards/sensebox_mcu/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/sensebox_mcu/mpconfigboard.mk
@@ -9,6 +9,7 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
 
 # There are many pin definitions on this board; it doesn't quite fit on very large translations.
 CIRCUITPY_USB_MIDI = 0
diff --git a/ports/atmel-samd/boards/shirtty/mpconfigboard.mk b/ports/atmel-samd/boards/shirtty/mpconfigboard.mk
index 798fd8fcb31..232650d22d3 100644
--- a/ports/atmel-samd/boards/shirtty/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/shirtty/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/snekboard/mpconfigboard.mk b/ports/atmel-samd/boards/snekboard/mpconfigboard.mk
index 441853c554d..a6d64a4e4fe 100644
--- a/ports/atmel-samd/boards/snekboard/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/snekboard/mpconfigboard.mk
@@ -11,4 +11,5 @@ EXTERNAL_FLASH_DEVICES = "W25Q16JVxQ"
 LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/sparkfun_qwiic_micro_no_flash/mpconfigboard.mk b/ports/atmel-samd/boards/sparkfun_qwiic_micro_no_flash/mpconfigboard.mk
index 5c2ad88dfc4..81e5949807c 100644
--- a/ports/atmel-samd/boards/sparkfun_qwiic_micro_no_flash/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/sparkfun_qwiic_micro_no_flash/mpconfigboard.mk
@@ -10,3 +10,4 @@ INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/sparkfun_redboard_turbo/mpconfigboard.mk b/ports/atmel-samd/boards/sparkfun_redboard_turbo/mpconfigboard.mk
index b34dfb3d2e6..61235d4f028 100755
--- a/ports/atmel-samd/boards/sparkfun_redboard_turbo/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/sparkfun_redboard_turbo/mpconfigboard.mk
@@ -12,4 +12,5 @@ LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
 CIRCUITPY_ERRNO = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_RAINBOWIO = 0
diff --git a/ports/atmel-samd/boards/sparkfun_samd21_dev/mpconfigboard.mk b/ports/atmel-samd/boards/sparkfun_samd21_dev/mpconfigboard.mk
index b8ac2dc2569..99b0ff41dae 100644
--- a/ports/atmel-samd/boards/sparkfun_samd21_dev/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/sparkfun_samd21_dev/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/sparkfun_samd21_mini/mpconfigboard.mk b/ports/atmel-samd/boards/sparkfun_samd21_mini/mpconfigboard.mk
index 77dfe8887d7..c0d743cd4c9 100644
--- a/ports/atmel-samd/boards/sparkfun_samd21_mini/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/sparkfun_samd21_mini/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk b/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk
index d6071f4b66e..b315dfe6a13 100644
--- a/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk
@@ -11,4 +11,5 @@ EXTERNAL_FLASH_DEVICES = "W25Q64JVxQ"
 LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_PARALLELDISPLAYBUS = 0
diff --git a/ports/atmel-samd/boards/stringcar_m0_express/mpconfigboard.mk b/ports/atmel-samd/boards/stringcar_m0_express/mpconfigboard.mk
index 706797928ec..f5ce42f06a0 100644
--- a/ports/atmel-samd/boards/stringcar_m0_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/stringcar_m0_express/mpconfigboard.mk
@@ -12,6 +12,7 @@ EXTERNAL_FLASH_DEVICES = AT25SF161
 LONGINT_IMPL = MPZ
 
 CIRCUITPY_KEYPAD = 0
+CIRCUITPY_LOAD_NATIVE = 0
 CIRCUITPY_USB_MIDI = 0
 
 CIRCUITPY_BITBANG_APA102 = 1
diff --git a/ports/atmel-samd/boards/trinket_m0/mpconfigboard.mk b/ports/atmel-samd/boards/trinket_m0/mpconfigboard.mk
index a51349f5f30..014fbf99c56 100644
--- a/ports/atmel-samd/boards/trinket_m0/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/trinket_m0/mpconfigboard.mk
@@ -9,3 +9,4 @@ CHIP_FAMILY = samd21
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/trinket_m0_haxpress/mpconfigboard.mk b/ports/atmel-samd/boards/trinket_m0_haxpress/mpconfigboard.mk
index 29b5865d419..2250105298c 100644
--- a/ports/atmel-samd/boards/trinket_m0_haxpress/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/trinket_m0_haxpress/mpconfigboard.mk
@@ -11,3 +11,4 @@ EXTERNAL_FLASH_DEVICES = W25Q32BV
 LONGINT_IMPL = MPZ
 
 CIRCUITPY_CODEOP = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/boards/uchip/mpconfigboard.mk b/ports/atmel-samd/boards/uchip/mpconfigboard.mk
index 543007ce110..5afa529c95c 100644
--- a/ports/atmel-samd/boards/uchip/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/uchip/mpconfigboard.mk
@@ -11,3 +11,4 @@ CIRCUITPY_BUILD_EXTENSIONS = bin,uf2
 INTERNAL_FLASH_FILESYSTEM = 1
 LONGINT_IMPL = NONE
 CIRCUITPY_FULL_BUILD = 0
+CIRCUITPY_LOAD_NATIVE = 0
diff --git a/ports/atmel-samd/mpconfigport.mk b/ports/atmel-samd/mpconfigport.mk
index f846f490aa4..da2743872a1 100644
--- a/ports/atmel-samd/mpconfigport.mk
+++ b/ports/atmel-samd/mpconfigport.mk
@@ -60,6 +60,8 @@ CIRCUITPY_ULAB = 0
 CIRCUITPY_VECTORIO = 0
 CIRCUITPY_ZLIB = 0
 
+CIRCUITPY_LOAD_NATIVE ?= 1
+
 # Turn off a few more things that don't fit in 192kB
 
 CIRCUITPY_TERMINALIO_VT100 = 0