Ocre containers: Adding support for NRF5340-DK board

WIP: Using nordic NRF5340DK board for testing and leveraging Ocre
containers.

Currently adding minimal support to make it compile and run on the
actual hardware. Will continue adding configs across with the
functionalities

Author: fgr-17

.gitmessage

@@ -0,0 +1,23 @@
+# Title: Summary, imperative, start upper case, don't end with a period
+# No more than 50 chars. #### 50 chars is here:  #
+
+# Remember blank line between title and body.
+
+# Body: Explain *what* and *why* (not *how*). Include task ID (Jira issue).
+# Wrap at 72 chars. ################################## which is here:  #
+
+
+# At the end: Include Co-authored-by for all contributors.
+# Include at least one empty line before it. Format:
+# Co-authored-by: name <user@users.noreply.github.com>
+#
+# How to Write a Git Commit Message:
+# https://chris.beams.io/posts/git-commit/
+#
+# 1. Separate subject from body with a blank line
+# 2. Limit the subject line to 50 characters
+# 3. Capitalize the subject line
+# 4. Do not end the subject line with a period
+# 5. Use the imperative mood in the subject line
+# 6. Wrap the body at 72 characters
+# 7. Use the body to explain what and why vs. how

CMakeLists.txt

@@ -8,7 +8,7 @@ endif()
 if(TARGET_PLATFORM_NAME STREQUAL "Linux")
     project(ocre LANGUAGES C ASM)
 elseif(TARGET_PLATFORM_NAME STREQUAL "Zephyr")
-    find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})  
+    find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
     project(ocre VERSION ${APP_VERSION_MAJOR}.${APP_VERSION_MINOR}.${APP_PATCHLEVEL}.${APP_VERSION_TWEAK} LANGUAGES C ASM)
 else()
     message(FATAL_ERROR "Unsupported TARGET_PLATFORM_NAME: ${TARGET_PLATFORM_NAME}")
@@ -59,7 +59,7 @@ if(NOT "${OCRE_INPUT_FILE}" STREQUAL "")
     message("Using input file: ${OCRE_INPUT_FILE}")
     add_custom_command(
         OUTPUT ${CMAKE_CURRENT_LIST_DIR}/src/ocre/ocre_input_file.g
-        COMMAND xxd -n wasm_binary -i ${OCRE_INPUT_FILE} > ${CMAKE_CURRENT_LIST_DIR}/src/ocre/ocre_input_file.g
+        COMMAND xxd -i ${OCRE_INPUT_FILE} | sed 's/unsigned char .*\\[/static unsigned char wasm_binary[/' | sed 's/unsigned int .*_len/static unsigned int wasm_binary_len/' > ${CMAKE_CURRENT_LIST_DIR}/src/ocre/ocre_input_file.g
         DEPENDS ${OCRE_INPUT_FILE}
         COMMENT "Generating C header from ${OCRE_INPUT_FILE}"
     )

boards/nrf5340dk_nrf5340_cpuapp.conf

@@ -0,0 +1,77 @@
+# Memory configuration - CRITICAL: nRF5340 only has 512KB RAM!
+CONFIG_ARM_MPU=y
+CONFIG_MAIN_STACK_SIZE=4096
+CONFIG_SHELL_STACK_SIZE=2048
+CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1
+CONFIG_HEAP_MEM_POOL_SIZE=32768
+
+# Container defaults - Reduced for nRF5340's limited RAM
+CONFIG_MAX_CONTAINERS=2
+CONFIG_OCRE_WAMR_HEAP_BUFFER_SIZE=180000
+CONFIG_OCRE_CONTAINER_DEFAULT_HEAP_SIZE=2048
+CONFIG_OCRE_CONTAINER_DEFAULT_STACK_SIZE=2048
+
+# DISABLE OCRE SHELL (this is what's causing the shell_fprintf errors!)
+CONFIG_OCRE_SHELL=n
+
+# Disable the main Zephyr shell
+CONFIG_SHELL=n
+
+# Random number generator (REQUIRED by networking and RNG sensor)
+CONFIG_ENTROPY_GENERATOR=y
+CONFIG_TEST_RANDOM_GENERATOR=y
+
+# Reduce networking stack sizes to save RAM
+CONFIG_NET_TX_STACK_SIZE=1024
+CONFIG_NET_RX_STACK_SIZE=2048
+CONFIG_NET_BUF_TX_COUNT=8
+CONFIG_NET_BUF_RX_COUNT=16
+CONFIG_NET_MGMT_EVENT_STACK_SIZE=1024
+CONFIG_NET_PKT_RX_COUNT=8
+CONFIG_NET_PKT_TX_COUNT=8
+CONFIG_NET_BUF_DATA_SIZE=128
+
+# Bus interfaces
+CONFIG_GPIO=y
+
+# Ocre Sensors support
+CONFIG_SENSOR=y
+CONFIG_OCRE_SENSORS=y
+CONFIG_RNG_SENSOR=y
+
+# Disable sensor shell
+CONFIG_SENSOR_SHELL=n
+CONFIG_SENSOR_INFO=n
+
+# Ocre GPIO Support (minimal)
+CONFIG_OCRE_GPIO=y
+CONFIG_OCRE_GPIO_MAX_PORTS=4
+CONFIG_OCRE_GPIO_PINS_PER_PORT=8
+CONFIG_OCRE_GPIO_MAX_PINS=32
+
+# Disable container messaging to save RAM
+CONFIG_OCRE_CONTAINER_MESSAGING=n
+
+# Disable filesystem features (despite OCRE selecting it, we minimize usage)
+CONFIG_OCRE_CONTAINER_FILESYSTEM=n
+CONFIG_FILE_SYSTEM_SHELL=n
+
+# Disable MCUboot/DFU
+CONFIG_IMG_MANAGER=n
+CONFIG_MCUBOOT_IMG_MANAGER=n
+CONFIG_STREAM_FLASH=n
+
+# Flash settings
+CONFIG_FLASH=y
+CONFIG_FLASH_MAP=y
+CONFIG_FLASH_PAGE_LAYOUT=y
+
+# Serial/UART
+CONFIG_SERIAL=y
+CONFIG_UART_CONSOLE=y
+CONFIG_CONSOLE=y
+
+# Reduce other buffers
+CONFIG_ZVFS_OPEN_MAX=8
+CONFIG_ZVFS_EVENTFD_MAX=5

boards/nrf5340dk_nrf5340_cpuapp.overlay

@@ -0,0 +1,34 @@
+/ {
+    aliases {
+        rng0 = &rng_device;
+        led0 = &led0;
+    };
+
+    rng_device: rng_0 {
+        compatible = "custom,rng-sensor";
+        label = "RNG Sensor";
+        status = "okay";
+    };
+
+    devices {
+        compatible = "custom,devices";
+        status = "okay";
+        device_list = <&rng_device>;
+    };
+};
+
+/* Enable one LED for blinky */
+&led0 {
+    status = "okay";
+};
+
+&flash0 {
+    partitions {
+        /delete-node/ partition@f8000;
+
+        user_data_partition: partition@e0000 {
+            label = "user_data";
+            reg = <0x000e0000 DT_SIZE_K(128)>;
+        };
+    };
+};

build.sh

@@ -91,6 +91,11 @@ if [[ "$TARGET" == "z" ]]; then
                         -DDTC_OVERLAY_FILE=boards/${ZEPHYR_BOARD}.overlay\;boards/enc28j60.overlay"
             echo "Building for b_u585i_iot02a with ENC28J60 support"
             ;;
+        5340)
+            ZEPHYR_BOARD="nrf5340dk/nrf5340/cpuapp"
+            CONF_EXTRA=""
+            echo "Building for nrf5340dk board: App CPU"
+            ;;
         *)
             ZEPHYR_BOARD="$BOARD_ARG"
             CONF_EXTRA=""

prj.conf

@@ -22,7 +22,7 @@ CONFIG_DYNAMIC_THREAD_ALLOC=y
 
 # File system
 CONFIG_FILE_SYSTEM=y
-#CONFIG_DISK_ACCESS=y 
+#CONFIG_DISK_ACCESS=y
 CONFIG_FILE_SYSTEM_LITTLEFS=y
 
 # Settings support