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wolfBoot/tools/scripts/nxp-s32k142-flash.sh

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#!/bin/bash
#
# NXP S32K142 Flash Script
#
# This script automates:
# 1. Configure for NXP S32K142
# 2. Build factory.srec (or test-update.srec / test-selfupdate.srec)
# 3. Flash via USB mass storage
#
set -e
# Configuration (can be overridden via environment variables or command line)
CONFIG_FILE="${CONFIG_FILE:-.config}"
SREC_FILE="${SREC_FILE:-factory.srec}"
# Function to detect USB mass storage mount point portably
detect_mount_path() {
# Common mount locations for USB mass storage devices
local mount_dirs=(
"/media"/*/S32K142EVB
"/media"/*/S32K142*
"/mnt"/*/S32K142EVB
"/mnt"/*/S32K142*
"/run/media"/*/S32K142EVB
"/run/media"/*/S32K142*
)
# Try to find existing mount
for path in "${mount_dirs[@]}"; do
if [ -d "$path" ] && [ -w "$path" ]; then
echo "$path"
return 0
fi
done
# If not found, return empty (will be set via --mount or wait for mount)
return 1
}
# Set default mount path (can be overridden via MOUNT_PATH env var or --mount flag)
if [ -z "${MOUNT_PATH}" ]; then
MOUNT_PATH=$(detect_mount_path 2>/dev/null || echo "")
fi
# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
NC='\033[0m' # No Color
# Parse command line arguments
SKIP_BUILD=0
SKIP_FLASH=0
TEST_UPDATE=0
TEST_SELFUPDATE=0
TRIGGER_MAGIC=0
usage() {
echo "Usage: $0 [OPTIONS]"
echo ""
echo "Options:"
echo " --test-update Build test-update.srec with v2 image in update partition (use 'trigger' command to start update)"
echo " --test-selfupdate Build test-selfupdate.srec with bootloader v1 + v2 bootloader update (use 'trigger' command to start update)"
echo " --trigger-magic Include trigger magic bytes to auto-start update on boot (use with --test-update)"
echo " --skip-build Skip the build step (use existing .srec)"
echo " --skip-flash Skip flashing (just build)"
echo " -h, --help Show this help message"
echo ""
echo "Environment variables:"
echo " MOUNT_PATH Override mount path (default: auto-detect)"
echo ""
echo "Examples:"
echo " $0 # Build and flash factory.srec (v1 only)"
echo " $0 --test-update # Build with v2 in update partition, use 'trigger' cmd"
echo " $0 --test-update --trigger-magic # Build with v2 and auto-trigger update on boot"
echo " $0 --test-selfupdate # Build with bootloader v2 update, tests self-update"
echo " $0 --skip-flash # Build without flashing"
exit 0
}
while [[ $# -gt 0 ]]; do
case $1 in
--test-update)
TEST_UPDATE=1
SREC_FILE="test-update.srec"
shift
;;
--test-selfupdate)
TEST_SELFUPDATE=1
SREC_FILE="test-selfupdate.srec"
shift
;;
--trigger-magic)
TRIGGER_MAGIC=1
shift
;;
--skip-build)
SKIP_BUILD=1
shift
;;
--skip-flash)
SKIP_FLASH=1
shift
;;
--mount)
MOUNT_PATH="$2"
shift 2
;;
-h|--help)
usage
;;
*)
echo -e "${RED}Unknown option: $1${NC}"
usage
;;
esac
done
echo -e "${GREEN}=== NXP S32K142 Flash Script ===${NC}"
# Function to parse all needed values from .config file
parse_config() {
local config_file="$1"
if [ ! -f "$config_file" ]; then
echo -e "${RED}Error: Config file not found: ${config_file}${NC}"
exit 1
fi
# Helper function to extract config value
get_config_value() {
local key="$1"
grep -E "^${key}" "$config_file" | head -1 | sed -E "s/^${key}\??=//" | tr -d '[:space:]'
}
# Extract SIGN and HASH
SIGN_VALUE=$(get_config_value "SIGN")
HASH_VALUE=$(get_config_value "HASH")
# Extract partition layout
WOLFBOOT_PARTITION_BOOT_ADDRESS=$(get_config_value "WOLFBOOT_PARTITION_BOOT_ADDRESS")
WOLFBOOT_PARTITION_UPDATE_ADDRESS=$(get_config_value "WOLFBOOT_PARTITION_UPDATE_ADDRESS")
WOLFBOOT_PARTITION_SIZE=$(get_config_value "WOLFBOOT_PARTITION_SIZE")
# Validate required fields
local missing=""
[ -z "$SIGN_VALUE" ] && missing="${missing}SIGN "
[ -z "$HASH_VALUE" ] && missing="${missing}HASH "
[ -z "$WOLFBOOT_PARTITION_BOOT_ADDRESS" ] && missing="${missing}WOLFBOOT_PARTITION_BOOT_ADDRESS "
[ -z "$WOLFBOOT_PARTITION_UPDATE_ADDRESS" ] && missing="${missing}WOLFBOOT_PARTITION_UPDATE_ADDRESS "
[ -z "$WOLFBOOT_PARTITION_SIZE" ] && missing="${missing}WOLFBOOT_PARTITION_SIZE "
if [ -n "$missing" ]; then
echo -e "${RED}Error: Missing required config values: ${missing}${NC}"
exit 1
fi
# Convert SIGN/HASH to lowercase flag format
SIGN_FLAG="--$(echo "$SIGN_VALUE" | tr '[:upper:]' '[:lower:]')"
HASH_FLAG="--$(echo "$HASH_VALUE" | tr '[:upper:]' '[:lower:]')"
# Ensure partition addresses have 0x prefix for bash arithmetic
for var in WOLFBOOT_PARTITION_BOOT_ADDRESS WOLFBOOT_PARTITION_UPDATE_ADDRESS WOLFBOOT_PARTITION_SIZE; do
eval "val=\$$var"
if [[ ! "$val" =~ ^0x ]]; then
eval "$var=\"0x\${val}\""
fi
done
echo -e "${CYAN}Config: SIGN=${SIGN_VALUE} HASH=${HASH_VALUE} BOOT=${WOLFBOOT_PARTITION_BOOT_ADDRESS} UPDATE=${WOLFBOOT_PARTITION_UPDATE_ADDRESS} SIZE=${WOLFBOOT_PARTITION_SIZE}${NC}"
}
# Change to wolfboot root directory
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
WOLFBOOT_ROOT="$(cd "${SCRIPT_DIR}/../.." && pwd)"
cd "${WOLFBOOT_ROOT}"
echo -e "${YELLOW}Working directory: ${WOLFBOOT_ROOT}${NC}"
# Step 1: Configure
if [ $SKIP_BUILD -eq 0 ]; then
echo ""
echo -e "${GREEN}[1/3] Configuring for NXP S32K142...${NC}"
if [ ! -f "${CONFIG_FILE}" ]; then
echo -e "${RED}Error: Config file not found: ${CONFIG_FILE}${NC}"
exit 1
fi
# Only copy if source and destination are different
if [ "${CONFIG_FILE}" != ".config" ]; then
cp "${CONFIG_FILE}" .config
echo "Copied ${CONFIG_FILE} to .config"
else
echo "Using existing .config"
fi
# Parse all configuration values from .config
parse_config .config
# Step 2: Build
echo ""
if [ $TEST_SELFUPDATE -eq 1 ]; then
echo -e "${GREEN}[2/3] Building test-selfupdate.srec (bootloader v1 + v2 bootloader update)...${NC}"
echo -e "${CYAN}NOTE: This tests bootloader self-update functionality${NC}"
# Step 2a: Build bootloader v1
echo ""
echo -e "${CYAN}Building bootloader v1...${NC}"
make clean
make wolfboot.bin RAM_CODE=1 WOLFBOOT_VERSION=1
if [ ! -f "wolfboot.bin" ]; then
echo -e "${RED}Error: Failed to build wolfboot.bin v1${NC}"
exit 1
fi
cp wolfboot.bin wolfboot_v1.bin
echo -e "${GREEN}Bootloader v1 built successfully${NC}"
# Build factory.srec to get the v1 application image
echo ""
echo -e "${CYAN}Building factory image with v1 application...${NC}"
make factory.srec
if [ ! -f "factory.srec" ]; then
echo -e "${RED}Error: Failed to build factory.srec${NC}"
exit 1
fi
if [ ! -f "test-app/image_v1_signed.bin" ]; then
echo -e "${RED}Error: test-app/image_v1_signed.bin not found${NC}"
exit 1
fi
# Preserve v1 application image before clean (copy outside test-app to survive clean)
cp test-app/image_v1_signed.bin image_v1_signed_backup.bin
echo -e "${GREEN}Preserved v1 application image${NC}"
# Step 2b: Build bootloader v2
echo ""
echo -e "${CYAN}Building bootloader v2...${NC}"
make clean
make wolfboot.bin RAM_CODE=1 WOLFBOOT_VERSION=2
if [ ! -f "wolfboot.bin" ]; then
echo -e "${RED}Error: Failed to build wolfboot.bin v2${NC}"
exit 1
fi
# Step 2c: Sign bootloader v2 with --wolfboot-update flag
echo ""
echo -e "${CYAN}Signing bootloader v2 with --wolfboot-update flag...${NC}"
# Ensure sign tool is built
if [ ! -f "tools/keytools/sign" ]; then
echo -e "${YELLOW}Building sign tool...${NC}"
make -C tools/keytools
fi
# Check if key exists
if [ ! -f "wolfboot_signing_private_key.der" ]; then
echo -e "${RED}Error: wolfboot_signing_private_key.der not found${NC}"
echo "Please generate keys first with: make keys"
exit 1
fi
# Sign with --wolfboot-update flag (version 2) using config values
./tools/keytools/sign ${SIGN_FLAG} ${HASH_FLAG} --wolfboot-update wolfboot.bin wolfboot_signing_private_key.der 2
if [ ! -f "wolfboot_v2_signed.bin" ]; then
echo -e "${RED}Error: Failed to sign bootloader v2${NC}"
exit 1
fi
echo -e "${GREEN}Bootloader v2 signed successfully${NC}"
# Step 2e: Assemble test-selfupdate.bin
echo ""
echo -e "${CYAN}Assembling test-selfupdate.bin...${NC}"
echo " wolfboot_v1.bin @ 0x0 (bootloader v1)"
echo " image_v1_signed.bin @ ${WOLFBOOT_PARTITION_BOOT_ADDRESS} (boot partition)"
echo " wolfboot_v2_signed.bin @ ${WOLFBOOT_PARTITION_UPDATE_ADDRESS} (update partition)"
# Ensure bin-assemble tool is built
if [ ! -f "tools/bin-assemble/bin-assemble" ]; then
echo -e "${YELLOW}Building bin-assemble tool...${NC}"
make -C tools/bin-assemble
fi
./tools/bin-assemble/bin-assemble \
test-selfupdate.bin \
0x0 wolfboot_v1.bin \
${WOLFBOOT_PARTITION_BOOT_ADDRESS} image_v1_signed_backup.bin \
${WOLFBOOT_PARTITION_UPDATE_ADDRESS} wolfboot_v2_signed.bin
if [ ! -f "test-selfupdate.bin" ]; then
echo -e "${RED}Error: Failed to assemble test-selfupdate.bin${NC}"
exit 1
fi
# Step 2f: Convert to SREC
echo ""
echo -e "${CYAN}Converting to test-selfupdate.srec...${NC}"
arm-none-eabi-objcopy -I binary -O srec --srec-forceS3 test-selfupdate.bin test-selfupdate.srec
# Cleanup temp files
rm -f trigger_magic.bin
rm -f wolfboot_v1.bin
rm -f image_v1_signed_backup.bin
echo -e "${GREEN}Build successful: test-selfupdate.srec${NC}"
elif [ $TEST_UPDATE -eq 1 ]; then
if [ $TRIGGER_MAGIC -eq 1 ]; then
echo -e "${GREEN}[2/3] Building test-update.srec (v1 boot + v2 update + trigger magic)...${NC}"
else
echo -e "${GREEN}[2/3] Building test-update.srec (v1 boot + v2 update, no trigger)...${NC}"
fi
make clean
make factory.srec
# Build v2 signed image
echo ""
echo -e "${CYAN}Signing test-app with version 2...${NC}"
cp test-app/image_v1_signed.bin test-app/image_v1_signed_backup.bin
./tools/keytools/sign ${SIGN_FLAG} ${HASH_FLAG} test-app/image.bin wolfboot_signing_private_key.der 2
echo -e "${CYAN}Assembling test-update.bin...${NC}"
echo " wolfboot.bin @ 0x0"
echo " image_v1_signed.bin @ ${WOLFBOOT_PARTITION_BOOT_ADDRESS} (boot partition)"
echo " image_v2_signed.bin @ ${WOLFBOOT_PARTITION_UPDATE_ADDRESS} (update partition)"
if [ $TRIGGER_MAGIC -eq 1 ]; then
# Calculate trigger magic address: end of update partition - 5 bytes
# Update partition end = UPDATE_ADDRESS + PARTITION_SIZE
# Trigger magic "pBOOT" (5 bytes) goes at end - 5
TRIGGER_ADDRESS=$(printf "0x%X" $(( ${WOLFBOOT_PARTITION_UPDATE_ADDRESS} + ${WOLFBOOT_PARTITION_SIZE} - 5 )))
echo " trigger_magic.bin @ ${TRIGGER_ADDRESS} (auto-trigger update)"
echo ""
echo -e "${CYAN}NOTE: Update will start automatically on first boot${NC}"
# Create trigger magic file
echo -n "pBOOT" > trigger_magic.bin
./tools/bin-assemble/bin-assemble \
test-update.bin \
0x0 wolfboot.bin \
${WOLFBOOT_PARTITION_BOOT_ADDRESS} test-app/image_v1_signed_backup.bin \
${WOLFBOOT_PARTITION_UPDATE_ADDRESS} test-app/image_v2_signed.bin \
${TRIGGER_ADDRESS} trigger_magic.bin
# Cleanup trigger magic file
rm -f trigger_magic.bin
else
echo ""
echo -e "${YELLOW}NOTE: No trigger magic - use test-app 'trigger' command to start update${NC}"
./tools/bin-assemble/bin-assemble \
test-update.bin \
0x0 wolfboot.bin \
${WOLFBOOT_PARTITION_BOOT_ADDRESS} test-app/image_v1_signed_backup.bin \
${WOLFBOOT_PARTITION_UPDATE_ADDRESS} test-app/image_v2_signed.bin
fi
# Convert to srec
echo -e "${CYAN}Converting to test-update.srec...${NC}"
arm-none-eabi-objcopy -I binary -O srec --srec-forceS3 test-update.bin test-update.srec
# Cleanup temp files
mv test-app/image_v1_signed_backup.bin test-app/image_v1_signed.bin 2>/dev/null || true
echo -e "${GREEN}Build successful: test-update.srec${NC}"
echo ""
if [ $TRIGGER_MAGIC -eq 1 ]; then
echo -e "${CYAN}Update will start automatically on boot.${NC}"
else
echo -e "${CYAN}After boot, use these test-app commands:${NC}"
echo " status - Show partition info (should show v1 boot, v2 update)"
echo " trigger - Set update flag and reboot"
echo " reboot - Reboot to start update"
fi
else
echo -e "${GREEN}[2/3] Building factory.srec...${NC}"
make clean
make factory.srec
fi
if [ ! -f "${SREC_FILE}" ]; then
echo -e "${RED}Error: Build failed - ${SREC_FILE} not found${NC}"
exit 1
fi
echo -e "${GREEN}Build successful: ${SREC_FILE}${NC}"
else
echo ""
echo -e "${YELLOW}[1/3] Skipping configure (--skip-build)${NC}"
echo -e "${YELLOW}[2/3] Skipping build (--skip-build)${NC}"
fi
# Step 3: Flash
if [ $SKIP_FLASH -eq 0 ]; then
echo ""
echo -e "${GREEN}[3/3] Flashing to S32K142EVB...${NC}"
if [ ! -f "${SREC_FILE}" ]; then
echo -e "${RED}Error: ${SREC_FILE} not found. Run without --skip-build first.${NC}"
exit 1
fi
# Auto-detect mount path if not set
if [ -z "${MOUNT_PATH}" ]; then
echo -e "${CYAN}Auto-detecting mount path...${NC}"
MOUNT_PATH=$(detect_mount_path 2>/dev/null || echo "")
fi
# Wait for mount point if not available
WAIT_COUNT=0
while [ -z "${MOUNT_PATH}" ] || [ ! -d "${MOUNT_PATH}" ]; do
if [ $WAIT_COUNT -eq 0 ]; then
if [ -z "${MOUNT_PATH}" ]; then
echo -e "${YELLOW}Waiting for S32K142EVB to be mounted...${NC}"
else
echo -e "${YELLOW}Waiting for ${MOUNT_PATH} to be mounted...${NC}"
fi
echo "(Connect the S32K142EVB board via USB)"
echo " Or specify mount path with: --mount PATH"
echo " Or set environment variable: MOUNT_PATH=/path/to/mount"
fi
sleep 1
WAIT_COUNT=$((WAIT_COUNT + 1))
# Try to detect mount path again
if [ -z "${MOUNT_PATH}" ]; then
MOUNT_PATH=$(detect_mount_path 2>/dev/null || echo "")
fi
if [ $WAIT_COUNT -gt 30 ]; then
echo -e "${RED}Error: Timeout waiting for mount point${NC}"
if [ -z "${MOUNT_PATH}" ]; then
echo " Please specify mount path with: --mount PATH"
echo " Or set environment variable: MOUNT_PATH=/path/to/mount"
else
echo " Expected mount at: ${MOUNT_PATH}"
fi
exit 1
fi
done
echo -e "${CYAN}Using mount path: ${MOUNT_PATH}${NC}"
echo "Copying ${SREC_FILE} to ${MOUNT_PATH}..."
cp "${SREC_FILE}" "${MOUNT_PATH}/"
sync
echo -e "${GREEN}Flash complete!${NC}"
else
echo ""
echo -e "${YELLOW}[3/3] Skipping flash (--skip-flash)${NC}"
fi
echo ""
echo -e "${GREEN}=== Complete ===${NC}"
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