zephyr/boards: Add NXP MIMXRT1020 EVK board.

This board has plenty of RAM, flash, and peripherals, including Ethernet.
It also has a microSD slot, which also works.

Access to the REPL is via UART1, which is available via the DAPLink
connector J23.

Signed-off-by: Ned Konz <[email protected]>

Author: bikeNomad

ports/zephyr/boards/mimxrt1020_evk.conf

@@ -0,0 +1,21 @@
+CONFIG_USB_DEVICE_STACK=y
+CONFIG_USB_DEVICE_PRODUCT="Zephyr MicroPython"
+CONFIG_USB_MASS_STORAGE=y
+CONFIG_MASS_STORAGE_DISK_NAME="SDMMC"
+
+CONFIG_FLASH=y
+CONFIG_FLASH_MAP=y
+CONFIG_FLASH_PAGE_LAYOUT=y
+
+CONFIG_MICROPY_FROZEN_MODULES=y
+CONFIG_MICROPY_FROZEN_MANIFEST="boards/mimxrt1020_evk/manifest.py"
+CONFIG_MICROPY_CONFIGFILE="boards/mimxrt1020_evk/mpconfigport.h"
+
+# CONFIG_DYNAMIC_THREAD=y
+CONFIG_THREAD_CUSTOM_DATA=y
+CONFIG_THREAD_MONITOR=y
+CONFIG_THREAD_STACK_INFO=y
+
+CONFIG_LOG=n
+CONFIG_FP16=n
+CONFIG_BOOT_BANNER=n

ports/zephyr/boards/mimxrt1020_evk.overlay

@@ -0,0 +1,9 @@
+/ {
+	aliases {
+		watchdog0 = &wdog0;
+	};
+};
+
+&wdog0 {
+	status = "okay";
+};

ports/zephyr/boards/mimxrt1020_evk/manifest.py

@@ -0,0 +1,6 @@
+include("$(MPY_DIR)/extmod/asyncio")
+
+freeze("$(PORT_DIR)/modules")
+
+require("upysh")
+require("aiorepl")

ports/zephyr/boards/mimxrt1020_evk/mpconfigport.h

@@ -0,0 +1,3 @@
+#define MICROPY_CONFIG_ROM_LEVEL (MICROPY_CONFIG_ROM_LEVEL_EXTRA_FEATURES)
+
+#include "../mpconfigport.h"