rebuild

#!/bin/bash
#================================================================================================
#
# This file is licensed under the terms of the GNU General Public
# License version 2. This program is licensed "as is" without any
# warranty of any kind, whether express or implied.
#
# This file is a part of the Rebuild Armbian
# https://github.com/ophub/amlogic-s9xxx-armbian
#
# Description: Run on x86_64 Ubuntu-22.04 to rebuild Armbian images.
# Copyright (C) 2021~ https://www.armbian.com
# Copyright (C) 2021~ https://github.com/unifreq
# Copyright (C) 2021~ https://github.com/ophub/amlogic-s9xxx-armbian/blob/main/CONTRIBUTORS.md
# Copyright (C) 2021~ https://github.com/ophub/amlogic-s9xxx-armbian
#
# Command: sudo ./rebuild
# Command optional parameters please refer to the source code repository
#
#======================================== Functions list ========================================
#
# error_msg          : Output error message and exit
# process_msg        : Output process step message
# clean_model_conf   : Clean the model configuration file
# mount_try          : Mount the image file with retry
# get_textoffset     : Get kernel TEXT_OFFSET
#
# init_var           : Initialize all variables
# check_data         : Validate the configuration data
# find_armbian       : Find Armbian file (build/output/images/*.img)
# git_pull_dir       : Download files from a git repository
# download_depends   : Download the dependency files
# query_kernel       : Query the latest kernel version
# check_kernel       : Verify kernel file integrity via sha256sum
# download_kernel    : Download the kernel files
#
# confirm_version    : Confirm version and board configuration
# extract_armbian    : Extract Armbian image files
# make_image         : Create a new Armbian image
# copy_files         : Copy the Armbian files to the image
# replace_kernel     : Replace kernel files in the image
# refactor_bootfs    : Refactor bootfs partition files
# refactor_rootfs    : Refactor rootfs partition files
# clean_tmp          : Clear temporary files
#
# loop_rebuild       : Loop to rebuild Armbian for all boards
#
#================================ Set make environment variables ================================
#
# Related file storage path
current_path="${PWD}"
armbian_outputpath="${current_path}/build/output/images"
armbian_rebuild_file="${armbian_outputpath}/*-trunk_*.img"
build_path="${current_path}/build-armbian"
kernel_path="${build_path}/kernel"
uboot_path="${build_path}/u-boot"
common_files="${build_path}/armbian-files/common-files"
platform_files="${build_path}/armbian-files/platform-files"
different_files="${build_path}/armbian-files/different-files"
model_conf="${common_files}/etc/model_database.conf"
firmware_path="${common_files}/usr/lib/firmware"
tmp_dir="${current_path}/build/tmp_dir"
tmp_outpath="${tmp_dir}/tmp_out"
tmp_armbian="${tmp_dir}/tmp_armbian"
tmp_build="${tmp_dir}/tmp_build"
tmp_aml_image="${tmp_dir}/tmp_aml_image"

# System operation environment
arch_info="$(uname -m)"
host_release="$(cat /etc/os-release | grep '^VERSION_CODENAME=.*' | cut -d'=' -f2)"
# Get armbian ${VERSION_CODENAME}: such as [ resolute ]
os_release_file="etc/os-release"
# Set banner's ${BOARD_NAME}: such as [ s905x3 ]
armbian_release_file="etc/armbian-release"
# Add personalized settings for special devices, such as [ s922x-oes-plus ]
board_release_file="etc/armbian-board-release.conf"
# Add custom armbian information
ophub_release_file="etc/ophub-release"

# U-BOOT files download repository
uboot_repo="https://github.com/ophub/u-boot"
# Firmware files download repository
firmware_repo="https://github.com/ophub/firmware"

# Set the kernel download repository from github.com
kernel_repo="https://github.com/ophub/kernel"
# Set the tags(kernel_xxx) of the default kernel that can be replaced via the [ -u ] parameter
default_tags="stable"
kernel_usage=""
# Set the list of kernels used by default(Selectable version)
stable_kernel=("6.12.y" "6.18.y")
flippy_kernel=(${stable_kernel[@]})
beta_kernel=(${stable_kernel[@]})
rk3588_kernel=("6.1.y")
rk35xx_kernel=("6.1.y")
h6_kernel=("6.6.y")
specific_6xy=("6.1.y" "6.6.y" "6.12.y" "6.18.y")
specific_5xy=("5.10.y" "5.15.y")
# Set to automatically use the latest kernel
auto_kernel="true"
# Initialize the kernel array
declare -A tags_list

# Initialize the build device
build_board="all"
# Set Armbian size (Unit: MiB, boot_mb >= 256, root_mb >= 2048)
boot_mb="512"
root_mb="3000"
# Set ROOTFS partition file system type, options: [ ext4 / btrfs ]
rootfs_type="ext4"
# Set Armbian OS type (server / desktop)
os_type="server"
# Set Armbian builder signature
builder_name=""

# Set font color
STEPS="[\033[95m STEPS \033[0m]"
INFO="[\033[94m INFO \033[0m]"
NOTE="[\033[93m NOTE \033[0m]"
WARNING="[\033[93m WARNING \033[0m]"
SUCCESS="[\033[92m SUCCESS \033[0m]"
ERROR="[\033[91m ERROR \033[0m]"
#
#================================================================================================

error_msg() {
    echo -e " [💔] ${1}"
    exit 1
}

process_msg() {
    echo -e " [🌿] ${1}"
}

clean_model_conf() {
    [[ -f "${model_conf}" ]] || return 1
    sed -e 's/NA//g' -e 's/NULL//g' -e 's/[ ][ ]*//g' "${model_conf}" | grep -E '^[^#].+'
}

mount_try() {
    # Check mount parameters
    local m_type="${1}"
    local m_dev="${2}"
    local m_target="${3}"
    [[ -n "${m_type}" && -n "${m_dev}" && -n "${m_target}" ]] || {
        error_msg "Mount parameter is missing: [ ${m_type}, ${m_dev}, ${m_target} ]"
    }

    local t=1
    local max_try=10
    while [[ "${t}" -le "${max_try}" ]]; do
        # Mount according to the image partition format; rely on command's exit status directly.
        if [[ "${m_type}" == "btrfs" ]]; then
            if mount -t "${m_type}" -o discard,compress=zstd:6 "${m_dev}" "${m_target}" 2>/dev/null; then
                return 0
            fi
        else
            if mount -t "${m_type}" -o discard "${m_dev}" "${m_target}" 2>/dev/null; then
                return 0
            fi
        fi

        # Mount failed: ensure target is unmounted before retry, then back off.
        sync
        umount -l "${m_target}" 2>/dev/null || true
        sleep 3
        ((t++))
    done
    error_msg "[ ${max_try} ] attempts to mount [ ${m_dev} -> ${m_target} ] failed."
}

get_textoffset() {
    vmlinuz_name="${1}"
    need_overload="yes"
    [[ -f "${vmlinuz_name}" ]] || return 0
    # With TEXT_OFFSET patch is [ 0108 ], without TEXT_OFFSET patch is [ 0000 ] and need to ues [ UBOOT_OVERLOAD ] file.
    [[ "$(hexdump -n 15 -x "${vmlinuz_name}" 2>/dev/null | head -n 1 | awk '{print $7}')" == "0108" ]] && need_overload="no"
}

init_var() {
    echo -e "${STEPS} Initializing variables..."

    # If it is followed by [ : ], it means that the option requires a parameter value
    local options="b:r:u:k:a:t:s:n:"
    parsed_args=$(getopt -o "${options}" -- "${@}")
    [[ ${?} -ne 0 ]] && error_msg "Parameter parsing failed."
    eval set -- "${parsed_args}"

    while true; do
        case "${1}" in
        -b | --Board)
            if [[ -n "${2}" ]]; then
                build_board="${2// /}"
                shift 2
            else
                error_msg "Invalid -b parameter [ ${2} ]!"
            fi
            ;;
        -r | --kernelRepository)
            if [[ -n "${2}" ]]; then
                kernel_repo="${2}"
                shift 2
            else
                error_msg "Invalid -r parameter [ ${2} ]!"
            fi
            ;;
        -u | --kernelUsage)
            if [[ -n "${2}" ]]; then
                kernel_usage="${2//kernel_/}"
                shift 2
            else
                error_msg "Invalid -u parameter [ ${2} ]!"
            fi
            ;;
        -k | --Kernel)
            if [[ -n "${2}" ]]; then
                oldIFS="${IFS}"
                IFS="_"
                stable_kernel=(${2})
                flippy_kernel=(${2})
                beta_kernel=(${2})
                specific_kernel=(${2})
                IFS="${oldIFS}"
                shift 2
            else
                error_msg "Invalid -k parameter [ ${2} ]!"
            fi
            ;;
        -a | --Autokernel)
            if [[ -n "${2}" ]]; then
                auto_kernel="${2}"
                shift 2
            else
                error_msg "Invalid -a parameter [ ${2} ]!"
            fi
            ;;
        -t | --rootfsType)
            if [[ -n "${2}" ]]; then
                rootfs_type="${2}"
                shift 2
            else
                error_msg "Invalid -t parameter [ ${2} ]!"
            fi
            ;;
        -s | --Size)
            if [[ -n "${2}" ]]; then
                img_mb="${2}"
                shift 2
            else
                error_msg "Invalid -s parameter [ ${2} ]!"
            fi
            ;;
        -n | --BuilderName)
            if [[ -n "${2}" ]]; then
                builder_name="${2// /}"
                shift 2
            else
                error_msg "Invalid -n parameter [ ${2} ]!"
            fi
            ;;
        --)
            shift
            break
            ;;
        *)
            [[ -n "${1}" ]] && error_msg "Invalid option [ ${1} ]!"
            break
            ;;
        esac
    done

    # Set the image size, such as [ -s 512/2560 ] or [ -s 2560 ]
    [[ -n "${img_mb}" ]] && {
        if [[ "${img_mb}" =~ / ]]; then
            boot_mb="${img_mb%%/*}"
            root_mb="${img_mb##*/}"
        else
            root_mb="${img_mb}"
        fi
    }

    # Validate partition sizes (Unit: MiB). Boot must be >= 256 and root >= 2048 to fit
    [[ "${boot_mb}" =~ ^[0-9]+$ && "${boot_mb}" -ge 256 ]] || error_msg "Invalid boot partition size: [ ${boot_mb} ]"
    [[ "${root_mb}" =~ ^[0-9]+$ && "${root_mb}" -ge 2048 ]] || error_msg "Invalid rootfs partition size: [ ${root_mb} ]"
}

check_data() {
    # Columns of ${model_conf}:
    # 1.ID  2.MODEL  3.SOC  4.FDTFILE  5.UBOOT_OVERLOAD  6.MAINLINE_UBOOT  7.BOOTLOADER_IMG  8.DESCRIPTION
    # 9.KERNEL_TAGS  10.PLATFORM  11.FAMILY  12.BOOT_CONF  13.CONTRIBUTORS  14.BOARD  15.BUILD
    [[ -f "${model_conf}" ]] || error_msg "Missing model config file: [ ${model_conf} ]"

    # Get a list of build devices
    if [[ "${build_board}" == "all" ]]; then
        board_list=":(yes)"
        build_armbian=($(
            clean_model_conf |
                grep -E "^.*:yes$" | awk -F':' '{print $14}' |
                sort -u | xargs
        ))
    elif [[ "${build_board}" =~ ^(amlogic|rockchip|allwinner)([0-9]+_[0-9]+|[0-9]+)?$ ]]; then
        # Get the platform name and range, such as [ amlogic50 ], [ rockchip50_100 ], etc.
        # name is [ amlogic ], [ rockchip ], [ allwinner ], range is [ 50 ], [ 50_100 ], etc.
        # amlogic50 -> platform_name=amlogic, platform_range=50, rockchip50_100 -> platform_name=rockchip, platform_range=50_100
        platform_name="${BASH_REMATCH[1]}"
        platform_range="${BASH_REMATCH[2]}"
        build_armbian=($(
            clean_model_conf |
                grep -E "^.*:${platform_name}:.*:yes$" | awk -F':' '{print $14}' |
                sort -u | xargs
        ))
        # Slice by range if specified, such as [ amlogic50 ], [ rockchip50_100 ], etc.
        if [[ "${platform_range}" =~ ^([0-9]+)_([0-9]+)$ ]]; then
            build_armbian=("${build_armbian[@]:${BASH_REMATCH[1]}:$((BASH_REMATCH[2] - BASH_REMATCH[1]))}")
        elif [[ -n "${platform_range}" ]]; then
            build_armbian=("${build_armbian[@]:0:${platform_range}}")
        fi
        board_list=":($(echo ${build_armbian[@]} | sed -e 's/ /\|/g')):(yes)"
    elif [[ "${build_board}" =~ ^(first|last)([0-9]+)$ ]]; then
        # first<N>: first N boards, last<N>: last N boards
        slice_type="${BASH_REMATCH[1]}"
        slice_num="${BASH_REMATCH[2]}"
        build_armbian=($(
            clean_model_conf |
                grep -E "^.*:yes$" | awk -F':' '{print $14}' |
                sort -u | xargs
        ))
        [[ "${slice_type}" == "first" ]] && build_armbian=("${build_armbian[@]:0:${slice_num}}")
        [[ "${slice_type}" == "last" ]] && build_armbian=("${build_armbian[@]: -${slice_num}}")
        board_list=":($(echo ${build_armbian[@]} | sed -e 's/ /\|/g')):(yes)"
    elif [[ "${build_board}" =~ ^range([0-9]+)_([0-9]+)$ ]]; then
        # range<N>_<M>: boards from index N, count M-N
        range_start="${BASH_REMATCH[1]}"
        range_end="${BASH_REMATCH[2]}"
        build_armbian=($(
            clean_model_conf |
                grep -E "^.*:yes$" | awk -F':' '{print $14}' |
                sort -u | xargs
        ))
        build_armbian=("${build_armbian[@]:${range_start}:$((range_end - range_start))}")
        board_list=":($(echo ${build_armbian[@]} | sed -e 's/ /\|/g')):(yes)"
    else
        board_list=":($(echo ${build_board} | sed -e 's/_/\|/g')):(yes|no)"
        # Deduplicate while preserving order so [ -b s905x_s905x ] doesn't build twice.
        build_armbian=($(echo ${build_board} | tr '_' '\n' | awk 'NF && !seen[$0]++'))
    fi
    [[ "${#build_armbian[@]}" -eq 0 ]] && error_msg "The [ BOARD ] is missing, stop building."

    # Get the kernel array
    kernel_from=($(
        clean_model_conf |
            grep -E "^.*${board_list}$" | awk -F':' '{print $9}' |
            sort -u | xargs
    ))
    [[ "${#kernel_from[@]}" -eq 0 ]] && error_msg "Missing [ KERNEL_TAGS ] settings, stop building."
    # Replace custom kernel tags
    [[ -n "${kernel_usage}" ]] && {
        for ((i = 0; i < ${#kernel_from[@]}; i++)); do
            if [[ ${kernel_from[${i}]} == "${default_tags}/"* ]]; then
                kernel_from[${i}]="${kernel_from[${i}]//${default_tags}/${kernel_usage}}"
            fi
        done
    }

    # Convert the kernel_from to the kernel array
    for item in "${kernel_from[@]}"; do
        # Split the key and value
        IFS='/' read -r key value <<<"${item}"

        # Check if the value is "all".
        if [[ "${value}" == "all" ]]; then
            # If the value is "all", assign the value of ${key}_kernel. such as [ stable_kernel, rk3588_kernel, etc. ]
            eval "value=\"\${${key}_kernel[@]}\""
        elif [[ "${value}" =~ ^[1-9]+ ]]; then
            if [[ "${value}" == "5.x.y" ]]; then
                value="${specific_5xy[@]}"
            elif [[ "${value}" == "6.x.y" ]]; then
                value="${specific_6xy[@]}"
            else
                IFS='_' read -ra value <<<"${value}"
                value="${value[@]}"
            fi
        fi

        # If auto_kernel is false, use the value from -k parameter
        if [[ ! "${auto_kernel}" =~ ^(true|yes)$ ]]; then
            if [[ "${#specific_kernel[@]}" -eq 0 ]]; then
                error_msg "Plase use the -k parameter to specify the kernel version."
            else
                value="${specific_kernel[@]}"
            fi
        fi

        # Merge the same key values
        if [[ -n "${tags_list[${key}]}" ]]; then
            tags_list[${key}]+=" ${value}"
        else
            tags_list[${key}]="${value}"
        fi
    done

    # Convert the tags_list array to the kernel array (remove duplicates)
    for key in "${!tags_list[@]}"; do
        # Convert the space-separated string to an array and remove duplicates
        read -ra unique_values <<<"$(echo "${tags_list[${key}]}" | tr ' ' '\n' | sort -u | tr '\n' ' ')"
        # Assign the unique values back to the tags_list
        tags_list[${key}]="${unique_values[@]}"
    done

    # Check the kernel tags list
    [[ "${#tags_list[@]}" -eq 0 ]] && error_msg "The [ tags_list ] is missing, stop building."
    echo -e "${INFO} The kernel tags list: [ ${!tags_list[@]} ]"

    # Convert kernel repository address to api format
    [[ "${kernel_repo}" =~ ^https: ]] && kernel_repo="$(echo ${kernel_repo} | awk -F'/' '{print $4"/"$5}')"
    kernel_api="https://github.com/${kernel_repo}"
}

find_armbian() {
    cd "${current_path}"

    echo -e "${STEPS} Searching for Armbian file..."

    # Get armbian release and version
    armbian_rebuild_name="$(ls ${armbian_rebuild_file} 2>/dev/null | head -n 1 | awk -F "/" '{print $NF}')"
    [[ -n "${armbian_rebuild_name}" ]] || error_msg "The armbian original file does not exist: [ ${armbian_rebuild_file} ]"

    # Find armbian version info: such as [ 22.02.0 ]
    armbian_rebuild_version="$(echo ${armbian_rebuild_name} | grep -oE '[2-9][0-9]\.[0-9]{1,2}\.[0-9]{1,2}' | head -n 1)"
    [[ -n "${armbian_rebuild_version}" ]] || {
        armbian_rebuild_version="22.02.02"
        echo -e "${WARNING} Missing armbian version info!"
    }

    echo -e "${INFO} Armbian rebuild file: [ ${armbian_rebuild_name} ], Version: [ ${armbian_rebuild_version} ]"
}

git_pull_dir() {
    cd "${current_path}"

    # Check git_pull_dir parameters
    git_repo="${1}"
    git_branch="${2}"
    git_dir="${3}"
    git_path="${4}"
    [[ -n "${git_repo}" && -n "${git_branch}" && -n "${git_dir}" && -n "${git_path}" ]] || {
        error_msg "git_pull_dir parameter is missing: [ ${git_repo}, ${git_branch}, ${git_dir}, ${git_path} ]"
    }

    # Clone the repository to the temporary directory. If it fails, wait 1 minute and try again, try 10 times.
    git_tmp_path="$(mktemp -d)"
    local clone_ok=0
    for i in {1..10}; do
        if git clone --quiet --single-branch --depth=1 --branch="${git_branch}" "${git_repo}" "${git_tmp_path}"; then
            clone_ok=1
            break
        fi
        sleep 60
    done
    [[ "${clone_ok}" -eq 1 ]] || error_msg "Failed to clone the [ ${git_repo} ] repository."

    # Copy the files to the storage directory
    mkdir -p "${git_path}"
    cp -af --update=none --no-preserve=ownership "${git_tmp_path}/${git_dir}/." "${git_path}" ||
        error_msg "Failed to move the [ ${git_dir} ] files to the [ ${git_path} ] directory."

    # Delete temporary files
    rm -rf "${git_tmp_path}" 2>/dev/null
}

download_depends() {
    echo -e "${STEPS} Downloading dependency files..."

    # Download Armbian u-boot files
    uboot_num="$(find "${uboot_path}/rockchip" -mindepth 1 -maxdepth 1 -type d 2>/dev/null | wc -l)"
    if [[ -n "${uboot_num}" && "${uboot_num}" -le "5" ]]; then
        git_pull_dir "${uboot_repo}" main u-boot "${uboot_path}"
        echo -e "${INFO} u-boot download completed."
    else
        echo -e "${INFO} u-boot files exist, skip downloading."
    fi

    # Download Armbian firmware files
    firmware_num="$(find "${firmware_path}" -mindepth 1 -maxdepth 1 -type d 2>/dev/null | wc -l)"
    if [[ -n "${firmware_num}" && "${firmware_num}" -le "5" ]]; then
        git_pull_dir "${firmware_repo}" main firmware "${firmware_path}"
        echo -e "${INFO} firmware download completed."
    else
        echo -e "${INFO} firmware files exist, skip downloading."
    fi
}

query_kernel() {
    echo -e "${STEPS} Querying the latest kernel version..."

    # Check the version on the kernel repository
    x="1"
    for key in "${!tags_list[@]}"; do
        {
            # Query the name of the latest kernel version
            tmp_arr_kernels=()
            down_kernel_list=(${tags_list[${key}]})
            i=1
            for kernel_var in "${down_kernel_list[@]}"; do
                echo -e "${INFO} (${x}.${i}) Auto query the latest kernel version for [ ${key} - ${kernel_var} ]"

                # Identify the kernel <VERSION> and <PATCHLEVEL>, such as [ 6.1 ]
                kernel_verpatch="$(echo ${kernel_var} | awk -F '.' '{print $1"."$2}')"

                # Query the latest kernel version
                latest_version="$(
                    curl -fsSL \
                        ${kernel_api}/releases/expanded_assets/kernel_${key} |
                        grep -oP "${kernel_verpatch}\.[0-9]+(?=\.tar\.gz)" |
                        sort -urV | head -n 1
                )"

                if [[ -n "${latest_version}" ]]; then
                    tmp_arr_kernels[${i}]="${latest_version}"
                else
                    tmp_arr_kernels[${i}]="${kernel_var}"
                fi

                echo -e "${INFO} (${x}.${i}) [ ${key} - ${tmp_arr_kernels[$i]} ] is latest kernel. \n"

                ((i++))
            done

            # Assign the latest kernel version to the array
            tags_list[${key}]="${tmp_arr_kernels[@]}"

            ((x++))
        }
    done
}

check_kernel() {
    [[ -n "${1}" ]] && check_path="${1}" || error_msg "Invalid kernel path to check."
    check_files=($(awk '{print $2}' "${check_path}/sha256sums"))
    for cf in "${check_files[@]}"; do
        {
            # Check if file exists
            [[ -s "${check_path}/${cf}" ]] || error_msg "The [ ${cf} ] file is missing."
            # Check if the file sha256sum is correct (exact filename match, no substring confusion)
            tmp_sha256sum="$(sha256sum "${check_path}/${cf}" | awk '{print $1}')"
            tmp_checkcode="$(awk -v f="${cf}" '$2==f {print $1}' "${check_path}/sha256sums")"
            [[ "${tmp_sha256sum}" == "${tmp_checkcode}" ]] || error_msg "[ ${cf} ]: sha256sum verification failed."
        }
    done
    echo -e "${INFO} All [ ${#check_files[@]} ] kernel files are sha256sum checked to be complete.\n"
}

download_kernel() {
    cd "${current_path}"

    echo -e "${STEPS} Downloading kernel files..."

    x="1"
    for key in "${!tags_list[@]}"; do
        {
            down_kernel_list=(${tags_list[${key}]})
            # Download the kernel to the storage directory
            i="1"
            for kernel_var in "${down_kernel_list[@]}"; do
                if [[ ! -d "${kernel_path}/${key}/${kernel_var}" ]]; then
                    kernel_down_from="https://github.com/${kernel_repo}/releases/download/kernel_${key}/${kernel_var}.tar.gz"
                    echo -e "${INFO} (${x}.${i}) [ ${key} - ${kernel_var} ] Kernel download from [ ${kernel_down_from} ]"

                    # Download the kernel files. If the download fails, try again 10 times.
                    [[ -d "${kernel_path}/${key}" ]] || mkdir -p "${kernel_path}/${key}"
                    local _curl_ok=0
                    for t in {1..10}; do
                        if curl -fsSL "${kernel_down_from}" -o "${kernel_path}/${key}/${kernel_var}.tar.gz"; then
                            _curl_ok=1
                            break
                        fi
                        sleep 60
                    done
                    [[ "${_curl_ok}" -eq 1 ]] || error_msg "Failed to download the kernel files from the server."

                    # Decompress the kernel files
                    tar -mxzf "${kernel_path}/${key}/${kernel_var}.tar.gz" -C "${kernel_path}/${key}" ||
                        error_msg "[ ${kernel_var} ] kernel decompression failed."
                else
                    echo -e "${INFO} (${x}.${i}) [ ${key} - ${kernel_var} ] Kernel is in the local directory."
                fi

                # If the kernel contains the sha256sums file, check the files integrity
                [[ -f "${kernel_path}/${key}/${kernel_var}/sha256sums" ]] && check_kernel "${kernel_path}/${key}/${kernel_var}"

                ((i++))
            done

            # Delete downloaded kernel temporary files
            rm -f "${kernel_path}/${key}"/*.tar.gz
            sync

            ((x++))
        }
    done
}

confirm_version() {
    cd "${current_path}"

    # Columns of ${model_conf}:
    # 1.ID  2.MODEL  3.SOC  4.FDTFILE  5.UBOOT_OVERLOAD  6.MAINLINE_UBOOT  7.BOOTLOADER_IMG  8.DESCRIPTION
    # 9.KERNEL_TAGS  10.PLATFORM  11.FAMILY  12.BOOT_CONF  13.CONTRIBUTORS  14.BOARD  15.BUILD
    # Column 5, called <UBOOT_OVERLOAD> in Amlogic, <TRUST_IMG> in Rockchip, Not used in Allwinner.

    # Find [ the first ] configuration information with [ the same BOARD name ] and [ BUILD as yes ] in the ${model_conf} file.
    board_conf="$(
        clean_model_conf |
            grep -E "^.*:${board}:(yes|no)$" |
            head -n 1
    )"
    [[ -n "${board_conf}" ]] || error_msg "[ ${board} ] config is missing!"

    # Get device settings options
    MODEL_ID="$(echo ${board_conf} | awk -F':' '{print $1}')"
    MODEL_NAME="$(echo ${board_conf} | awk -F':' '{print $2}')"
    SOC="$(echo ${board_conf} | awk -F':' '{print $3}')"
    FDTFILE="$(echo ${board_conf} | awk -F':' '{print $4}')"
    UBOOT_OVERLOAD="$(echo ${board_conf} | awk -F':' '{print $5}')"
    TRUST_IMG="${UBOOT_OVERLOAD}"
    MAINLINE_UBOOT="$(echo ${board_conf} | awk -F':' '{print $6}')"
    BOOTLOADER_IMG="$(echo ${board_conf} | awk -F':' '{print $7}')"
    KERNEL_TAGS="$(echo ${board_conf} | awk -F':' '{print $9}')"
    PLATFORM="$(echo ${board_conf} | awk -F':' '{print $10}')"
    FAMILY="$(echo ${board_conf} | awk -F':' '{print $11}')"
    BOOT_CONF="$(echo ${board_conf} | awk -F':' '{print $12}')"
    CONTRIBUTORS="$(echo ${board_conf} | awk -F':' '{print $13}')"

    # Check whether the key parameters are correct
    [[ -n "${PLATFORM}" ]] || error_msg "Invalid PLATFORM parameter: [ ${PLATFORM} ]"
    # Set supported platform name
    support_platform=("amlogic" "rockchip" "allwinner")
    [[ -n "$(echo "${support_platform[@]}" | grep -w "${PLATFORM}")" ]] || error_msg "[ ${PLATFORM} ] not supported."

    # Add u-boot files record information
    [[ -n "${MAINLINE_UBOOT}" ]] && RECORD_MAINLINE_UBOOT="/usr/lib/u-boot/${MAINLINE_UBOOT}" || RECORD_MAINLINE_UBOOT=""
    [[ -n "${BOOTLOADER_IMG}" ]] && RECORD_BOOTLOADER_IMG="/usr/lib/u-boot/${BOOTLOADER_IMG}" || RECORD_BOOTLOADER_IMG=""
    [[ -n "${TRUST_IMG}" ]] && RECORD_TRUST_IMG="/usr/lib/u-boot/${TRUST_IMG}" || RECORD_TRUST_IMG=""

    # Get the kernel tags and version
    conf_kernel_tags="${KERNEL_TAGS%%/*}"
    conf_kernel_list="${KERNEL_TAGS##*/}"
    # Replace the default kernel tags with the custom kernel tags
    [[ -n "${kernel_usage}" && "${conf_kernel_tags}" == "${default_tags}" ]] && conf_kernel_tags="${kernel_usage}"
    # Check the kernel tags and version
    [[ -z "${conf_kernel_tags}" ]] && error_msg "The [ ${KERNEL_TAGS} ] is missing tags part."
    [[ -z "${conf_kernel_list}" ]] && error_msg "The [ ${KERNEL_TAGS} ] is missing list part."

    # Find the kernel list defined in the model database
    model_kernel=()
    if [[ "${conf_kernel_list}" == "all" ]]; then
        eval "model_kernel=(\"\${${conf_kernel_tags}_kernel[@]}\")"
        model_kernel=($(echo "${model_kernel[@]}" | xargs -n1 | sed -E 's/^([0-9]+\.[0-9]+)(\.[a-z0-9]+)?$/\1.[0-9]+/'))
    else
        # Convert the string into an array, using "_" as the delimiter
        IFS='_' read -ra conf_kernel_list <<<"${conf_kernel_list}"
        model_kernel=($(echo "${conf_kernel_list[@]}" | xargs -n1 | sed -E 's/^([0-9]+\.[0-9]+)(\.[a-z0-9]+)?$/\1.[0-9]+/'))
    fi
    # Check the kernel list
    [[ "${#model_kernel[@]}" -eq 0 ]] && error_msg "The kernel list is empty for [ ${board} ]"

    # Find the kernel version that matches the custom version
    build_kernel=()
    latest_kernel=(${tags_list[${conf_kernel_tags}]})
    for ck in "${model_kernel[@]}"; do
        for lk in "${latest_kernel[@]}"; do
            [[ "${lk}" =~ ^${ck}$ ]] && build_kernel+=("${lk}")
        done
    done
    # Check the kernel version
    [[ "${#build_kernel[@]}" -eq 0 ]] && error_msg "The kernel list is invalid for [ ${board} ]"
}

extract_armbian() {
    process_msg "(1/7) Extract armbian files."
    cd "${current_path}"

    rm -rf "${tmp_dir}"
    mkdir -p "${tmp_outpath}" "${tmp_armbian}" "${tmp_build}" "${tmp_aml_image}"

    armbian_image_file="${tmp_aml_image}/armbian_${board}_${kernel}.img"
    rm -f ${armbian_image_file}
    cp -f "${armbian_outputpath}/${armbian_rebuild_name}" "${armbian_image_file}"

    loop_old="$(losetup -P -f --show "${armbian_image_file}")"
    [[ -n "${loop_old}" ]] || error_msg "losetup ${armbian_image_file} failed."

    # Mount rootfs partition
    [[ -b "${loop_old}p2" ]] && mount_dev="${loop_old}p2" || mount_dev="${loop_old}p1"
    mount_try ext4 ${mount_dev} ${tmp_armbian}

    cd "${tmp_armbian}"
    # Find ID in ${os_release_file}: such as [ubuntu/debian]
    release_codeid="$(cat ${os_release_file} | grep -oE "^ID=.*" | cut -d"=" -f2)"
    [[ -z "${release_codeid}" ]] && error_msg "The [ ${os_release_file}: ID ] is invalid."
    # Find VERSION_CODENAME in ${os_release_file}: such as [resolute]
    release_codename="$(cat ${os_release_file} | grep -oE "^VERSION_CODENAME=.*" | cut -d"=" -f2)"
    [[ -z "${release_codename}" ]] && error_msg "The [ ${os_release_file}: VERSION_CODENAME ] is invalid."

    # Delete all files of /boot partition and replace it later
    rm -rf boot/*
    # Delete the kernel files and replace it later
    rm -rf usr/lib/modules/*
    # Delete the symbolic link files and relink it later
    rm -rf bin lib sbin var/lock var/run
    # Delete unused and duplicate scripts
    rm -f root/install* root/fstab.template
    rm -f usr/bin/armbian-install usr/sbin/armbian-install
    rm -f usr/sbin/ddbr usr/bin/ddbr
}

make_image() {
    process_msg "(2/7) Make new armbian image."
    cd "${current_path}"

    # Set Armbian image file parameters
    [[ "${PLATFORM}" == "amlogic" ]] && {
        skip_mb="4"
        partition_table_type="msdos"
        bootfs_type="fat32"
    }
    [[ "${PLATFORM}" == "rockchip" ]] && {
        skip_mb="16"
        partition_table_type="gpt"
        bootfs_type="ext4"
    }
    [[ "${PLATFORM}" == "allwinner" ]] && {
        skip_mb="16"
        partition_table_type="msdos"
        bootfs_type="fat32"
    }

    # Special procedures for flashing specific boards
    # Reset default parameters
    write_board_file="no"
    adjust_kernel_files="no"
    # Check the personalization settings of this board
    board_release="${different_files}/${board}/rootfs/${board_release_file}"
    [[ -f "${board_release}" ]] && source ${board_release}

    # echo -e "${INFO} The [ ${board} ] Armbian image partition status: [ skip:${skip_mb} / boot:${boot_mb} / rootfs:${root_mb} ] MiB."

    # Set Armian file name
    armbian_filename="Armbian_${armbian_rebuild_version}_${PLATFORM}_${board}_${release_codename}_${kernel}_${os_type}_$(date +"%Y.%m.%d").img"
    build_image_file="${tmp_outpath}/${armbian_filename}"
    rm -f "${build_image_file}"

    IMG_SIZE="$((skip_mb + boot_mb + root_mb))"
    truncate -s ${IMG_SIZE}M "${build_image_file}" >/dev/null 2>&1

    parted -s "${build_image_file}" mklabel ${partition_table_type} 2>/dev/null
    parted -s "${build_image_file}" mkpart primary ${bootfs_type} $((skip_mb))MiB $((skip_mb + boot_mb - 1))MiB 2>/dev/null
    parted -s "${build_image_file}" mkpart primary ${rootfs_type} $((skip_mb + boot_mb))MiB 100% 2>/dev/null

    loop_new="$(losetup -P -f --show "${build_image_file}")"
    [[ -n "${loop_new}" ]] || error_msg "losetup ${build_image_file} failed."

    # Confirm BOOT_UUID
    BOOT_UUID="$(cat /proc/sys/kernel/random/uuid)"
    [[ -z "${BOOT_UUID}" ]] && BOOT_UUID="$(uuidgen)"
    [[ -z "${BOOT_UUID}" ]] && error_msg "The uuidgen is invalid, cannot continue."
    # Confirm ROOTFS_UUID
    ROOTFS_UUID="$(cat /proc/sys/kernel/random/uuid)"
    [[ -z "${ROOTFS_UUID}" ]] && ROOTFS_UUID="$(uuidgen)"
    [[ -z "${ROOTFS_UUID}" ]] && error_msg "The uuidgen is invalid, cannot continue."

    # Format bootfs partition
    if [[ "${bootfs_type}" == "fat32" ]]; then
        mkfs.vfat -F 32 -n "BOOT" ${loop_new}p1 >/dev/null 2>&1
    else
        mkfs.ext4 -F -q -U ${BOOT_UUID} -L "BOOT" -b 4k -m 0 ${loop_new}p1 >/dev/null 2>&1
    fi

    # Format rootfs partition
    if [[ "${rootfs_type}" == "btrfs" ]]; then
        mkfs.btrfs -f -U ${ROOTFS_UUID} -L "ROOTFS" -m single ${loop_new}p2 >/dev/null 2>&1
    else
        mkfs.ext4 -F -q -U ${ROOTFS_UUID} -L "ROOTFS" -b 4k -m 0 ${loop_new}p2 >/dev/null 2>&1
    fi

    # Write the specific bootloader for [ Amlogic ] boxes
    [[ "${PLATFORM}" == "amlogic" ]] && {
        bootloader_path="${uboot_path}/${PLATFORM}/bootloader"
        if [[ -n "${MAINLINE_UBOOT}" && -f "${bootloader_path}/${MAINLINE_UBOOT}" ]]; then
            dd if="${bootloader_path}/${MAINLINE_UBOOT}" of="${loop_new}" conv=fsync bs=1 count=444 2>/dev/null
            dd if="${bootloader_path}/${MAINLINE_UBOOT}" of="${loop_new}" conv=fsync bs=512 skip=1 seek=1 2>/dev/null
            #echo -e "${INFO} 01. For [ ${board} ] write bootloader: ${MAINLINE_UBOOT}"
        elif [[ -n "${BOOTLOADER_IMG}" && -f "${bootloader_path}/${BOOTLOADER_IMG}" ]]; then
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync bs=1 count=444 2>/dev/null
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync bs=512 skip=1 seek=1 2>/dev/null
            #echo -e "${INFO} 02. For [ ${board} ] write bootloader: ${BOOTLOADER_IMG}"
        fi
    }

    # Write the specific bootloader for [ Rockchip ] boxes
    [[ "${PLATFORM}" == "rockchip" ]] && {
        bootloader_path="${uboot_path}/${PLATFORM}/${board}"
        if [[ -n "${BOOTLOADER_IMG}" && -f "${bootloader_path}/${BOOTLOADER_IMG}" ]] &&
            [[ -n "${MAINLINE_UBOOT}" && -f "${bootloader_path}/${MAINLINE_UBOOT}" ]] &&
            [[ -n "${TRUST_IMG}" && -f "${bootloader_path}/${TRUST_IMG}" ]]; then
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync,notrunc bs=512 seek=64 2>/dev/null
            dd if="${bootloader_path}/${MAINLINE_UBOOT}" of="${loop_new}" conv=fsync,notrunc bs=512 seek=16384 2>/dev/null
            dd if="${bootloader_path}/${TRUST_IMG}" of="${loop_new}" conv=fsync,notrunc bs=512 seek=24576 2>/dev/null
            #echo -e "${INFO} 01. For [ ${board} ] write bootloader: ${TRUST_IMG}"
        elif [[ -n "${BOOTLOADER_IMG}" && -f "${bootloader_path}/${BOOTLOADER_IMG}" ]] &&
            [[ -n "${MAINLINE_UBOOT}" && -f "${bootloader_path}/${MAINLINE_UBOOT}" ]]; then
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync,notrunc bs=512 seek=64 2>/dev/null
            dd if="${bootloader_path}/${MAINLINE_UBOOT}" of="${loop_new}" conv=fsync,notrunc bs=512 seek=16384 2>/dev/null
            #echo -e "${INFO} 02. For [ ${board} ] write bootloader: ${MAINLINE_UBOOT}"
        elif [[ "${BOOTLOADER_IMG}" == "u-boot-rockchip.bin" && -f "${bootloader_path}/${BOOTLOADER_IMG}" ]]; then
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync,notrunc bs=512 seek=64 2>/dev/null
            #echo -e "${INFO} 03. For [ ${board} ] write bootloader: ${BOOTLOADER_IMG}"
        elif [[ -n "${BOOTLOADER_IMG}" && -f "${bootloader_path}/${BOOTLOADER_IMG}" ]]; then
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync,notrunc bs=512 skip=64 seek=64 2>/dev/null
            #echo -e "${INFO} 04. For [ ${board} ] write bootloader: ${BOOTLOADER_IMG}"
        fi
    }

    # Write the specific bootloader for [ Allwinner ] boxes
    [[ "${PLATFORM}" == "allwinner" ]] && {
        bootloader_path="${uboot_path}/${PLATFORM}/${board}"
        if [[ -n "${BOOTLOADER_IMG}" && -f "${bootloader_path}/${BOOTLOADER_IMG}" ]] &&
            [[ -n "${MAINLINE_UBOOT}" && -f "${bootloader_path}/${MAINLINE_UBOOT}" ]]; then
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync,notrunc bs=8k seek=1 2>/dev/null
            dd if="${bootloader_path}/${MAINLINE_UBOOT}" of="${loop_new}" conv=fsync,notrunc bs=8k seek=5 2>/dev/null
            #echo -e "${INFO} 01. For [ ${board} ] write bootloader: ${MAINLINE_UBOOT}"
        elif [[ -n "${BOOTLOADER_IMG}" && -f "${bootloader_path}/${BOOTLOADER_IMG}" ]]; then
            dd if=/dev/zero of="${loop_new}" bs=1k count=1023 seek=1 status=noxfer 2>/dev/null
            dd if="${bootloader_path}/${BOOTLOADER_IMG}" of="${loop_new}" conv=fsync,notrunc bs=8k seek=1 2>/dev/null
            #echo -e "${INFO} 02. For [ ${board} ] write bootloader: ${BOOTLOADER_IMG}"
        fi
    }

    # Special procedures for flashing specific boards
    [[ "${write_board_file}" == "yes" ]] && write_board_bootloader
}

copy_files() {
    process_msg "(3/7) Copy the Armbian files."
    cd "${current_path}"

    # Create a dual-partition general directory
    tag_bootfs="${tmp_build}/bootfs"
    tag_rootfs="${tmp_build}/rootfs"
    mkdir -p ${tag_bootfs} ${tag_rootfs}
    chown root:root ${tag_bootfs} ${tag_rootfs}

    # Mount bootfs
    if [[ "${bootfs_type}" == "fat32" ]]; then
        mount_try vfat ${loop_new}p1 ${tag_bootfs}
    else
        mount_try ext4 ${loop_new}p1 ${tag_bootfs}
    fi

    # Mount rootfs
    if [[ "${rootfs_type}" == "btrfs" ]]; then
        mount_try btrfs ${loop_new}p2 ${tag_rootfs}
    else
        mount_try ext4 ${loop_new}p2 ${tag_rootfs}
    fi

    # Copy the full Armbian image
    cp -af ${tmp_armbian}/. ${tag_rootfs}

    # Copy the common files
    [[ -d "${common_files}" ]] && cp -af --no-preserve=ownership ${common_files}/. ${tag_rootfs}

    # Copy the platform files
    platform_bootfs="${platform_files}/${PLATFORM}/bootfs"
    platform_rootfs="${platform_files}/${PLATFORM}/rootfs"
    [[ -d "${platform_bootfs}" ]] && cp -rf ${platform_bootfs}/. ${tag_bootfs}
    [[ -d "${platform_rootfs}" ]] && cp -af --no-preserve=ownership ${platform_rootfs}/. ${tag_rootfs}

    # Copy the different files
    different_bootfs="${different_files}/${board}/bootfs"
    different_rootfs="${different_files}/${board}/rootfs"
    [[ -d "${different_bootfs}" ]] && cp -rf ${different_bootfs}/. ${tag_bootfs}
    [[ -d "${different_rootfs}" ]] && cp -af --no-preserve=ownership ${different_rootfs}/. ${tag_rootfs}

    # Copy the bootloader files
    [[ -d "${tag_rootfs}/usr/lib/u-boot" ]] || mkdir -p "${tag_rootfs}/usr/lib/u-boot"
    [[ -n "${tag_rootfs}" && -d "${tag_rootfs}/usr/lib/u-boot" ]] && rm -rf "${tag_rootfs}/usr/lib/u-boot"/*
    [[ -d "${bootloader_path}" ]] && cp -af --no-preserve=ownership "${bootloader_path}/." "${tag_rootfs}/usr/lib/u-boot"

    # Copy the overload files
    [[ "${PLATFORM}" == "amlogic" ]] && cp -rf ${uboot_path}/${PLATFORM}/overload/. ${tag_bootfs}

    # Remove the .git directories
    rm -rf $(find ${tmp_build} -type d -name '.git')
}

replace_kernel() {
    process_msg "(4/7) Replace kernel files."
    cd "${current_path}"

    # Determine custom kernel filename
    kernel_boot="$(ls ${kernel_path}/${conf_kernel_tags}/${kernel}/boot-${kernel}*.tar.gz 2>/dev/null | head -n 1)"
    # Extract kernel name: boot-6.12.69-ophub.tar.gz -> 6.12.69-ophub
    kernel_name="${kernel_boot##*/}" && kernel_name="${kernel_name:5:-7}"
    [[ -n "${kernel_name}" ]] || error_msg "Missing kernel files for [ ${kernel} ]"
    # Extract kernel signature: 6.12.69-ophub -> ophub
    kernel_signature="${kernel_name#*-}"
    [[ -n "${kernel_signature}" ]] || error_msg "Missing kernel signature: [ ${kernel_name} ]"
    # Determine the kernel dtb, modules and header files based on the kernel name
    kernel_dtb="${kernel_path}/${conf_kernel_tags}/${kernel}/dtb-${PLATFORM}-${kernel_name}.tar.gz"
    kernel_modules="${kernel_path}/${conf_kernel_tags}/${kernel}/modules-${kernel_name}.tar.gz"
    kernel_header="${kernel_path}/${conf_kernel_tags}/${kernel}/header-${kernel_name}.tar.gz"
    [[ -s "${kernel_boot}" && -s "${kernel_dtb}" && -s "${kernel_modules}" && -s "${kernel_header}" ]] || error_msg "The 4 kernel missing."

    # 01. For /boot five files
    tar -mxzf ${kernel_boot} -C ${tag_bootfs}
    [[ "${PLATFORM}" == "allwinner" ]] && (cd ${tag_bootfs} && cp -f uInitrd-${kernel_name} uInitrd && cp -f vmlinuz-${kernel_name} Image)
    [[ "${PLATFORM}" == "amlogic" ]] && (cd ${tag_bootfs} && cp -f uInitrd-${kernel_name} uInitrd && cp -f vmlinuz-${kernel_name} zImage)
    [[ "${PLATFORM}" == "rockchip" ]] && (cd ${tag_bootfs} && ln -sf uInitrd-${kernel_name} uInitrd && ln -sf vmlinuz-${kernel_name} Image)
    [[ "$(ls ${tag_bootfs}/*${kernel_name} -l 2>/dev/null | grep "^-" | wc -l)" -ge "2" ]] || error_msg "The /boot files is missing."
    [[ "${PLATFORM}" == "amlogic" ]] && get_textoffset "${tag_bootfs}/zImage"

    # 02. For /boot/dtb/${PLATFORM}/*
    [[ -d "${tag_bootfs}/dtb/${PLATFORM}" ]] || mkdir -p ${tag_bootfs}/dtb/${PLATFORM}
    tar -mxzf ${kernel_dtb} -C ${tag_bootfs}/dtb/${PLATFORM}
    [[ "${PLATFORM}" == "rockchip" ]] && ln -sf dtb ${tag_bootfs}/dtb-${kernel_name}
    [[ "$(ls ${tag_bootfs}/dtb/${PLATFORM} -l 2>/dev/null | grep "^-" | wc -l)" -ge "2" ]] || error_msg "/boot/dtb/${PLATFORM} files is missing."

    # 03. For /usr/src/linux-headers-${kernel_name}
    header_path="linux-headers-${kernel_name}"
    [[ -n "${tag_rootfs}" && -d "${tag_rootfs}/usr/src" ]] && rm -rf "${tag_rootfs}/usr/src"/linux-headers-* 2>/dev/null
    mkdir -p "${tag_rootfs}/usr/src/${header_path}"
    tar -mxzf "${kernel_header}" -C "${tag_rootfs}/usr/src/${header_path}"
    [[ -d "${tag_rootfs}/usr/src/${header_path}/include" ]] || error_msg "/usr/src/${header_path}/include folder is missing."

    # 04. For /usr/lib/modules/${kernel_name}
    tar -mxzf ${kernel_modules} -C ${tag_rootfs}/usr/lib/modules
    (cd ${tag_rootfs}/usr/lib/modules/${kernel_name}/ && rm -f build source 2>/dev/null && ln -sf /usr/src/${header_path} build)
    [[ "$(ls ${tag_rootfs}/usr/lib/modules/${kernel_name} -l 2>/dev/null | grep "^d" | wc -l)" -eq "1" ]] || error_msg "/usr/lib/modules kernel folder is missing."

    # Special procedures for flashing specific boards
    [[ "${adjust_kernel_files}" == "yes" ]] && adjust_kernel_files_cmd
}

refactor_bootfs() {
    process_msg "(5/7) Refactor bootfs files."
    cd "${tag_bootfs}"

    # Process Amlogic series boot partition files
    [[ "${PLATFORM}" == "amlogic" && "${need_overload}" == "yes" ]] && {
        if [[ -n "${UBOOT_OVERLOAD}" && -f "${UBOOT_OVERLOAD}" ]]; then
            cp -f ${UBOOT_OVERLOAD} u-boot.ext
            chmod +x u-boot.ext
        elif [[ -z "${UBOOT_OVERLOAD}" || ! -f "${UBOOT_OVERLOAD}" ]]; then
            error_msg "${board} Board does not support using ${kernel} kernel, missing u-boot."
        fi
    }

    # Set configuration file mount parameters
    if [[ "${rootfs_type}" == "btrfs" ]]; then
        # For uEnv.txt
        uenv_rootdev="UUID=${ROOTFS_UUID} rootflags=compress=zstd:6 rw rootwait rootfstype=btrfs"
        # For armbianEnv.txt
        armbianenv_rootdev="UUID=${ROOTFS_UUID}"
        armbianenv_rootflags="compress=zstd:6"
    else
        # For uEnv.txt
        uenv_rootdev="UUID=${ROOTFS_UUID} rootflags=data=writeback rw rootwait rootfstype=ext4"
        # For armbianEnv.txt
        armbianenv_rootdev="UUID=${ROOTFS_UUID}"
        armbianenv_rootflags="rw,errors=remount-ro"
    fi

    # Edit the uEnv.txt
    uenv_conf_file="uEnv.txt"
    [[ -f "${uenv_conf_file}" ]] && {
        sed -i \
            -e "s|LABEL=ROOTFS|${uenv_rootdev}|g" \
            -e "s|meson.*.dtb|${FDTFILE}|g" \
            -e "s|sun.*.dtb|${FDTFILE}|g" \
            -e "s|rk.*.dtb|${FDTFILE}|g" \
            "${uenv_conf_file}"
    }

    # Add an alternate file (/boot/extlinux/extlinux.conf)
    boot_extlinux_file="extlinux/extlinux.conf.bak"
    rename_extlinux_file="extlinux/extlinux.conf"
    [[ -f "${boot_extlinux_file}" ]] && {
        sed -i \
            -e "s|LABEL=ROOTFS|${uenv_rootdev}|g" \
            -e "s|meson.*.dtb|${FDTFILE}|g" \
            -e "s|sun.*.dtb|${FDTFILE}|g" \
            -e "s|rk.*.dtb|${FDTFILE}|g" \
            "${boot_extlinux_file}"
        # If needed, such as t95z(s905x), rename delete .bak
        [[ "${BOOT_CONF}" == "extlinux.conf" ]] && mv -f "${boot_extlinux_file}" "${rename_extlinux_file}"
    }

    # Edit the armbianEnv.txt
    armbianenv_conf_file="armbianEnv.txt"
    [[ -f "${armbianenv_conf_file}" ]] && {
        sed -i \
            -e "s|\(fdtfile=.*\/\)[^/]*$|\1${FDTFILE}|g" \
            -e "s|^rootfstype=.*|rootfstype=${rootfs_type}|g" \
            -e "s|^rootdev=.*|rootdev=${armbianenv_rootdev}|g" \
            -e "s|^rootflags=.*|rootflags=${armbianenv_rootflags}|g" \
            -e "s|^overlay_prefix=.*|overlay_prefix=${FAMILY}|g" \
            "${armbianenv_conf_file}"
    }

    # Check device configuration files
    [[ -f "${uenv_conf_file}" || -f "${rename_extlinux_file}" || -f "${armbianenv_conf_file}" ]] || error_msg "Missing [ /boot/*Env.txt ]"
}

refactor_rootfs() {
    process_msg "(6/7) Refactor rootfs files."
    cd "${tag_rootfs}"

    # Remove the scripts contained in [ armbian-bsp-cli-odroidn2 ] that will cause the system to fail to start
    # [ dpkg -c armbian-bsp-cli-odroidn2_23.02.2_arm64.deb ] : https://paste.armbian.com/aloxuvokol
    # Move usr/share/armbian to armbian.bak. [ dpkg -S boot.cmd ] : [ armbian-bsp-cli-odroidn2: /usr/share/armbian/boot.cmd ]
    [[ -d "usr/share/armbian" ]] && {
        # Avoid mv-into-existing failures on subsequent rebuilds against the same image.
        rm -rf usr/share/armbian.bak
        mv -f usr/share/armbian usr/share/armbian.bak
    }
    # Move usr/lib/nand-sata-install to bak-nand-sata-install [ Useless bootloader and u-boot ]
    [[ -d "usr/lib/nand-sata-install" ]] && {
        rm -rf usr/lib/bak-nand-sata-install
        mv -f usr/lib/nand-sata-install usr/lib/bak-nand-sata-install
    }
    # Remove invalid install file
    [[ "${PLATFORM}" == "rockchip" && -f "usr/sbin/armbian-install" ]] && rm -f usr/sbin/armbian-install

    # Disable update_initramfs
    initramfs_conf="etc/initramfs-tools/update-initramfs.conf"
    [[ -f "${initramfs_conf}" ]] && {
        [[ -n "$(cat ${initramfs_conf} | grep -oE "^update_initramfs=")" ]] || error_msg "Missing [ update_initramfs ]"
        sed -i "s|^update_initramfs=.*|update_initramfs=no|g" ${initramfs_conf}
    }

    # Delete related files
    rm -f etc/apt/sources.list.save
    rm -f var/lib/dpkg/info/linux-image*
    rm -rf usr/share/doc/linux-image-*
    rm -rf usr/lib/linux-image-*
    # Remove motd-news related services
    rm -f usr/lib/systemd/system/motd-news.timer
    rm -f usr/lib/systemd/system/motd-news.service
    rm -f var/lib/systemd/deb-systemd-helper-enabled/timers.target.wants/motd-news.timer
    rm -f var/lib/systemd/deb-systemd-helper-enabled/motd-news.timer.dsh-also
    rm -f etc/systemd/system/timers.target.wants/motd-news.timer
    rm -f etc/update-motd.d/50-motd-news

    # Rebuild symbolic link files (ln -sf ${target} ${symbolic_link_file})
    ln -sf usr/bin bin
    ln -sf usr/lib lib
    ln -sf usr/sbin sbin
    ln -sf /run/lock var/lock
    ln -sf /run var/run
    ln -sf /usr/share/zoneinfo/Asia/Shanghai etc/localtime
    ln -sf armbian-ddbr usr/sbin/ddbr

    # Fix common releases permissions
    [[ -d "var/tmp" ]] && chmod 777 var/tmp
    [[ -d "var/cache/man" ]] && chown man:root var/cache/man -R
    [[ -d "var/cache/man" ]] && chmod g+s var/cache/man -R
    [[ -f "etc/sudoers" ]] && chown root:root etc/sudoers
    [[ -f "etc/sudoers" ]] && chmod 440 etc/sudoers
    [[ -f "usr/bin/sudo" ]] && chown root:root usr/bin/sudo
    [[ -f "usr/bin/sudo" ]] && chmod 4755 usr/bin/sudo
    # Fix focal permissions
    [[ -f "usr/lib/sudo/sudoers.so" ]] && chown 0 usr/lib/sudo/sudoers.so
    [[ -f "usr/lib/sudo/sudoers.so" ]] && chmod 644 usr/lib/sudo/sudoers.so
    [[ -f "usr/lib/policykit-1/polkit-agent-helper-1" ]] && chmod 4755 usr/lib/policykit-1/polkit-agent-helper-1
    # Fix jammy permissions
    [[ -f "usr/libexec/sudo/sudoers.so" ]] && chown 0 usr/libexec/sudo/sudoers.so
    [[ -f "usr/libexec/sudo/sudoers.so" ]] && chmod 644 usr/libexec/sudo/sudoers.so
    [[ -f "usr/libexec/polkit-agent-helper-1" ]] && chmod 4755 usr/libexec/polkit-agent-helper-1

    # Edit the etc/fstab
    [[ -f "etc/fstab" ]] || error_msg "The etc/fstab File does not exist."
    # Set different types of mount parameters
    if [[ "${rootfs_type}" == "btrfs" ]]; then
        fstab_string="defaults,noatime,compress=zstd:6"
    else
        fstab_string="defaults,noatime,nodiratime,commit=600,errors=remount-ro"
    fi
    # Update mount settings
    sed -i "s|^LABEL=ROOTFS.*|UUID=${ROOTFS_UUID}  /      ${rootfs_type}  ${fstab_string}  0 1|g" etc/fstab
    [[ "${bootfs_type}" == "ext4" ]] && {
        sed -i "s|^LABEL=BOOT.*|UUID=${BOOT_UUID}  /boot  ext4  defaults  0 2|g" etc/fstab
    }

    # Update release information
    [[ -f "${armbian_release_file}" ]] && {
        sed -i \
            -e "s|^VERSION=.*|VERSION=\"${armbian_rebuild_version}\"|g" \
            -e "s|^REVISION=.*|REVISION=\"${armbian_rebuild_version}\"|g" \
            -e "s|^BOARD=.*|BOARD=\"${board}\"|g" \
            -e "s|^BOARD_NAME=.*|BOARD_NAME=\"${board}\"|g" \
            -e "s|^BOARDFAMILY=.*|BOARDFAMILY=\"${FAMILY}\"|g" \
            -e "s|^BOOT_SOC=.*|BOOT_SOC=\"${SOC}\"|g" \
            -e "s|^IMAGE_TYPE=.*|IMAGE_TYPE=rebuild|g" \
            -e "s|^BOARD_TYPE=.*|BOARD_TYPE=diy|g" \
            -e "s|^VENDOR=.*|VENDOR=\"Armbian OS\"|g" \
            -e "s|^FORCE_BOOTSCRIPT_UPDATE=.*|FORCE_BOOTSCRIPT_UPDATE=\"no\"|g" \
            -e "s|^BOOTSCRIPT_FORCE_UPDATE=.*|FORCE_BOOTSCRIPT_UPDATE=\"no\"|g" \
            -e "s|^FORCE_UBOOT_UPDATE=.*|FORCE_UBOOT_UPDATE=\"no\"|g" \
            "${armbian_release_file}"
    }

    # Add custom startup script
    custom_startup_script="etc/custom_service/start_service.sh"
    [[ -x "${custom_startup_script}" && -f "etc/rc.local" ]] && {
        sed -i '/^exit 0/i\bash /etc/custom_service/start_service.sh &' etc/rc.local
    }

    # Enable ssh service
    ssh_config="etc/ssh/sshd_config"
    [[ -f "${ssh_config}" ]] && {
        sed -i \
            -e "s|^#*Port .*|Port 22|g" \
            -e "s|^#*PermitRootLogin .*|PermitRootLogin yes|g" \
            -e "s|^#*PasswordAuthentication .*|PasswordAuthentication yes|g" \
            "${ssh_config}"
    }

    # Adjust the default timeout for service start/stop
    system_conf="etc/systemd/system.conf"
    [[ -f "${system_conf}" ]] && {
        sed -i \
            -e "s|^#*DefaultTimeoutStartSec.*|DefaultTimeoutStartSec=10s|g" \
            -e "s|^#*DefaultTimeoutStopSec.*|DefaultTimeoutStopSec=10s|g" \
            "${system_conf}"
    }

    # Add custom sysctl configuration file
    [[ -d "etc/sysctl.d" && -f "etc/sysctl.conf" ]] && {
        ln -sf ../sysctl.conf etc/sysctl.d/99-sysctl.conf
    }

    # Disable tips of the day for [ /etc/update-motd.d/35-armbian-tips ]
    motd_tips="etc/default/armbian-motd"
    [[ -f "${motd_tips}" ]] && sed -i 's|^MOTD_DISABLE=.*|MOTD_DISABLE="tips"|g' ${motd_tips}
    quotes_cron="etc/cron.daily/armbian-quotes"
    [[ -f "${quotes_cron}" ]] && sed -i "s|^curl |#curl |g" ${quotes_cron}

    # Add custom disabled alias extension load modules
    custom_blacklist="etc/modprobe.d/blacklist.conf"
    [[ -f "${custom_blacklist}" ]] || echo -e "# This file lists the disabled alias extension load modules." >${custom_blacklist}
    [[ "${FDTFILE}" == "meson-sm1-skyworth-lb2004-a4091.dtb" ]] && {
        echo -e "\n# For Tencent Aurora 3Pro (s905x3-b) box." >>${custom_blacklist}
        echo -e "blacklist btmtksdio" >>${custom_blacklist}
    }

    # Make the .bashrc take effect, Default shell settings file: /etc/default/useradd
    echo '[[ "${SHELL}" == *bash && -f "${HOME}/.bashrc" ]] && . ${HOME}/.bashrc' >>etc/profile

    # Ensure the standard PATH block exists in /etc/profile.
    # Some upstream rootfs ship an /etc/profile missing this section, which leaves root
    # logins without /sbin & /usr/sbin in PATH (e.g. armbian-apt not found).
    # Only prepend when the root sbin PATH is not already set (idempotent).
    [[ -f "etc/profile" ]] && ! grep -q 'PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"' etc/profile && {
        new_profile="$(awk '
            BEGIN {
                block = "# Set the standard PATH (root gets sbin, others get games)\n" \
                        "if [ \"$(id -u)\" -eq 0 ]; then\n" \
                        "  PATH=\"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin\"\n" \
                        "else\n" \
                        "  PATH=\"/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games\"\n" \
                        "fi\n" \
                        "export PATH\n"
                inserted = 0
            }
            # After the 2nd header comment line, emit the block once
            !inserted && /^# and Bourne compatible shells/ { print; printf "\n%s", block; inserted = 1; next }
            { print }
            END { if (!inserted) printf "%s", block }
        ' etc/profile)" &&
            [[ -n "${new_profile}" ]] &&
            printf '%s\n' "${new_profile}" | tee etc/profile.new >/dev/null &&
            chown root:root etc/profile.new &&
            chmod 644 etc/profile.new &&
            mv -f etc/profile.new etc/profile
    }

    # Renaming/disabling related files
    mv -f etc/udev/rules.d/hdmi.rules etc/udev/rules.d/hdmi.rules.bak 2>/dev/null

    # Disable motd scripts
    [[ -d "etc/update-motd.d" ]] && {
        chmod -x etc/update-motd.d/*
        chmod +x etc/update-motd.d/{10-*,20-*,30-*}
    }

    # Explicitly disable resizing for Amlogic device [ /usr/lib/armbian/armbian-resize-filesystem ], use armbian-tf settings
    echo "yes" >root/.no_rootfs_resize

    # Reduce network latency [ A start job is running for raise network interfaces (5 mins 1 sec) ]
    network_service="usr/lib/systemd/system/networking.service"
    [[ -f "${network_service}" ]] && sed -i "s|^#*TimeoutStartSec=.*|TimeoutStartSec=10sec|g" ${network_service}

    # Add tasks that need to be executed on initial startup
    armbian_firstrun="usr/lib/armbian/armbian-firstrun"
    [[ -f "${armbian_firstrun}" ]] && sed -i '/\/etc\/armbian-release/i\[[ -x "/usr/sbin/armbian-fix" ]] && . /usr/sbin/armbian-fix' ${armbian_firstrun}
    # Configuration values for the armbian-firstrun service, true  = delete + generate host keys
    etc_firstrun="etc/default/armbian-firstrun"
    if [[ -f "${etc_firstrun}" ]] && grep -q "^OPENSSHD_REGENERATE_HOST_KEYS" "${etc_firstrun}"; then
        sed -i "s|^OPENSSHD_REGENERATE_HOST_KEYS=.*|OPENSSHD_REGENERATE_HOST_KEYS=true|" "${etc_firstrun}"
    else
        echo "OPENSSHD_REGENERATE_HOST_KEYS=true" >>"${etc_firstrun}"
    fi

    # Improve systemd startup speed, avoid timeout waiting
    armbian_firstlogin="usr/lib/armbian/armbian-firstlogin"
    [[ -f "${armbian_firstlogin}" ]] && sed -i "s#.*systemctl is-system-running.*#	timeout 120s systemctl is-system-running --wait > /dev/null 2>\&1 || true#g" "${armbian_firstlogin}"

    # Fix abnormal CPU temperature
    temp_file="usr/lib/armbian/armbian-allwinner-battery"
    [[ -f "${temp_file}" ]] && {
        insert_line="$(cat ${temp_file} | grep -n 'CPU_TEMP_OFFSET' | awk -F':' '{print $1}')"
        [[ -n "${insert_line}" ]] && {
            sed -i "${insert_line}i\        [[ \"\$(echo \${board_temp} | awk -F'.' '{print \$1}' | wc -c)\" -gt \"3\" ]] && board_temp=\${board_temp:0:2}" ${temp_file}
        }
    }

    # Optimize systemd-osc-context for SSH
    osc_file="usr/lib/systemd/profile.d/80-systemd-osc-context.sh"
    [[ -f "${osc_file}" ]] && {
        grep -q "SSH_CLIENT" "${osc_file}" || sed -i '/\[ "${TERM:-dumb}" = "dumb" \]/a [[ -n "${SSH_CLIENT}" || -n "${SSH_TTY}" ]] && return 0' "${osc_file}"
    }

    # Get random macaddr
    mac_hexchars="0123456789ABCDEF"
    mac_end=$(for i in {1..6}; do echo -n ${mac_hexchars:$((${RANDOM} % 16)):1}; done | sed -e 's/\(..\)/:\1/g')
    random_macaddr="9E:61${mac_end}"

    # Optimize wifi/bluetooth module
    [[ -d "usr/lib/firmware/brcm" ]] && (
        cd usr/lib/firmware/brcm/ && rm -f ../*.hcd

        # gtking/gtking pro is bcm4356 wifi/bluetooth, wifi5 module AP6356S
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:00/" "brcmfmac4356-sdio.txt" >"brcmfmac4356-sdio.azw,gtking.txt"
        # gtking/gtking pro is bcm4356 wifi/bluetooth, wifi6 module AP6275S
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:01/" "brcmfmac4375-sdio.txt" >"brcmfmac4375-sdio.azw,gtking.txt"
        # MXQ Pro+ is AP6330(bcm4330) wifi/bluetooth
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:02/" "brcmfmac4330-sdio.txt" >"brcmfmac4330-sdio.crocon,mxq-pro-plus.txt"
        # HK1 Box & H96 Max X3 is bcm54339 wifi/bluetooth
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:03/" "brcmfmac4339-sdio.ZP.txt" >"brcmfmac4339-sdio.amlogic,sm1.txt"
        # new ugoos x3 is brm43456
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:04/" "brcmfmac43456-sdio.txt" >"brcmfmac43456-sdio.amlogic,sm1.txt"
        # x96max plus v5.1 (ip1001m phy) adopts am7256 (brcm4354)
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:05/" "brcmfmac4354-sdio.txt" >"brcmfmac4354-sdio.amlogic,sm1.txt"
        # panther x2 AP6212A
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:06/" "brcmfmac43430-sdio.txt" >"brcmfmac43430-sdio.panther,x2.txt"
        # ct2000 s922x is brm4359
        sed -i "s/macaddr=.*/macaddr=${random_macaddr}:07/" "brcmfmac4359-sdio.ali,ct2000.txt"
        # easepi-r2 is AP6256 (BCM43455) wifi/bluetooth
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:08/" "brcmfmac43455-sdio.txt" >"brcmfmac43455-sdio.linkease,easepi-r2.txt"
        ln -sf brcmfmac43455-sdio.bin brcmfmac43455-sdio.linkease,easepi-r2.bin
        ln -sf brcmfmac43455-sdio.clm_blob brcmfmac43455-sdio.linkease,easepi-r2.clm_blob
        # easepi-a2 is AP6255 (BCM43455) wifi/bluetooth
        sed -e "s/macaddr=.*/macaddr=${random_macaddr}:09/" "brcmfmac43455-sdio.txt" >"brcmfmac43455-sdio.easepi,a2.txt"
        ln -sf brcmfmac43455-sdio.bin brcmfmac43455-sdio.easepi,a2.bin
        ln -sf brcmfmac43455-sdio.clm_blob brcmfmac43455-sdio.easepi,a2.clm_blob
    )

    # Add custom Armbian information
    release_lines=(
        "PLATFORM='${PLATFORM}'"
        "VERSION_CODEID='${release_codeid}'"
        "VERSION_CODENAME='${release_codename}'"
        "MODEL_ID='${MODEL_ID}'"
        "MODEL_NAME='${MODEL_NAME}'"
        "SOC='${SOC}'"
        "FDTFILE='${FDTFILE}'"
        "FAMILY='${FAMILY}'"
        "BOARD='${board}'"
        "KERNEL_REPO='${kernel_repo}'"
        "KERNEL_TAGS='${conf_kernel_tags}'"
        "KERNEL_VERSION='${kernel}'"
        "KERNEL_SIGNATURE='${kernel_signature}'"
        "DOWNLOAD_TYPE='deb'"
        "KERNEL_BACKUP='yes'"
        "BOOT_CONF='${BOOT_CONF}'"
        "ROOTFS_TYPE='${rootfs_type}'"
        "DISK_TYPE='usb'"
        "AMPART_STATUS='no'"
        "MLUBOOT_STATUS='no'"
        "MAINLINE_UBOOT='${RECORD_MAINLINE_UBOOT}'"
        "BOOTLOADER_IMG='${RECORD_BOOTLOADER_IMG}'"
        "BUILD_REPOSITORY='github.com/armbian/build'"
        "REBUILD_REPOSITORY='github.com/ophub/amlogic-s9xxx-armbian'"
        "CONTRIBUTORS='${CONTRIBUTORS}'"
        "BUILDER_NAME='${builder_name}'"
        "PACKAGED_DATE='$(date +%Y-%m-%d)'"
    )
    [[ "${PLATFORM}" == "rockchip" ]] && release_lines+=("TRUST_IMG='${RECORD_TRUST_IMG}'")
    [[ "${PLATFORM}" == "amlogic" ]] && release_lines+=("UBOOT_OVERLOAD='${UBOOT_OVERLOAD}'")
    printf '%s\n' "${release_lines[@]}" >>${ophub_release_file}

    sync && sleep 3
}

clean_tmp() {
    process_msg "(7/7) Clear temporary files."
    cd "${current_path}"

    umount -f ${tmp_armbian} 2>/dev/null
    losetup -d ${loop_old} 2>/dev/null

    fstrim ${tag_bootfs} 2>/dev/null
    fstrim ${tag_rootfs} 2>/dev/null
    umount -f ${tag_bootfs} 2>/dev/null
    umount -f ${tag_rootfs} 2>/dev/null
    losetup -d ${loop_new} 2>/dev/null

    cd "${tmp_outpath}"
    # Compress Armbian image file. Prefer pigz when available; otherwise fall back to gzip.
    if command -v pigz >/dev/null 2>&1; then
        pigz -qf "${armbian_filename}"
    else
        gzip -qf "${armbian_filename}"
    fi
    # Move Armbian files to the output directory
    mv -f "${armbian_filename}"* -t "${armbian_outputpath}"

    cd "${current_path}"
    rm -rf "${tmp_dir}" && sync
}

loop_rebuild() {
    cd "${current_path}"
    echo -e "${STEPS} Building Armbian images..."

    j="1"
    for b in "${build_armbian[@]}"; do
        {
            # Set specific configuration for building Armbian system
            board="${b}"
            confirm_version

            i="1"
            for k in "${build_kernel[@]}"; do
                {
                    # Set the kernel version
                    kernel="${k}"

                    # Check disk space size.
                    echo -ne "(${j}.${i}) Building Armbian [\033[92m ${board} - ${conf_kernel_tags}/${kernel} \033[0m]. "
                    avail_kib="$(df -Pk "${armbian_outputpath}" | awk 'NR==2 {print $4}')"
                    now_remaining_space=$((${avail_kib:-0} / 1024 / 1024))
                    if [[ "${now_remaining_space}" -le 6 ]]; then
                        echo -e "${WARNING} Remaining space is less than 6 GiB. Skipping this build."
                        break
                    else
                        echo "Remaining space: ${now_remaining_space} GiB."
                    fi

                    # Execute the following functions in sequence
                    extract_armbian
                    make_image
                    copy_files
                    replace_kernel
                    refactor_bootfs
                    refactor_rootfs
                    clean_tmp

                    echo -e "(${j}.${i}) Armbian built successfully. \n"
                    ((i++))
                }
            done

            ((j++))
        }
    done
}

# Show welcome message
echo -e "${STEPS} Welcome to the Armbian Rebuild Tool!"
echo -e "${INFO} Server running on Ubuntu: [ Release: ${host_release} / Host: ${arch_info} ] \n"
# Check script permission
[[ "$(id -u)" == 0 ]] || error_msg "Please run this script as root: [ sudo ./${0} ]"

# Initialize variables
init_var "${@}"
check_data
# Find rebuild files
find_armbian
# Download the dependency files
download_depends
# Query the latest kernel version
[[ "${auto_kernel}" =~ ^(true|yes)$ ]] && query_kernel
# Download the kernel files
download_kernel

# Show rebuild settings
echo -e "${INFO} [ ${#build_armbian[@]} ] lists of Armbian board: [ $(echo ${build_armbian[@]} | xargs) ]"
echo -e "${INFO} ROOTFS type: [ ${rootfs_type} ]"
echo -e "${INFO} Kernel Repo: [ ${kernel_repo} ], Kernel Usage: [ ${kernel_usage} ] \n"
# Show server start information
echo -e "${INFO} Server space usage before starting to compile: \n$(df -hT ${armbian_outputpath}) \n"

# Loop to rebuild armbian
loop_rebuild

# Show server end information
echo -e "${STEPS} Server space usage after compilation: \n$(df -hT ${armbian_outputpath}) \n"
echo -e "${SUCCESS} All processes completed successfully."