beaglebadge.conf

# BeagleBadge Texas Instruments AM62L dual core 256MB 2xGBE OSPI HDMI

BOARD_NAME="BeagleBadge"
BOARD_VENDOR="beagleboard"
BOARDFAMILY="k3"
BOARD_MAINTAINER="Grippy98"
BOOT_SOC="am62l"
BOOTCONFIG="am62lx_badge_defconfig"
BOOTFS_TYPE="fat"
BOOT_FDT_FILE="ti/k3-am62l3-badge.dts"
TIBOOT3_FILE="tiboot3.bin"
DEFAULT_CONSOLE="serial"
KERNEL_TARGET="vendor,vendor-rt,vendor-edge"
KERNEL_TEST_TARGET="vendor"
SERIALCON="ttyS2"
ATF_BOARD="am62l3-badge"
EXTRA_ATF_TARGETS="build/k3low/am62l3-badge/release/bl1.bin:bl1.bin"
OPTEE_ARGS="CFG_TEE_CORE_LOG_LEVEL=1"
OPTEE_PLATFORM="k3-am62lx"
EXTRA_BOOT_ARGS="BL1=bl1.bin"
DISPLAY_SUPPORT="yes"
CC33XX_SUPPORT="yes"
PACKAGE_LIST_BOARD_REMOVE="weston seatd ti-lvgl-demo firmware-cnm-wave"
PACKAGE_LIST_BOARD+=" bluetooth bluez-tools"

# ============================================================================
# LOW-RAM OPTIMIZATIONS FOR 256MB BADGE
# ============================================================================

function post_customize_image__beaglebadge_05_configure_zram() {
	display_alert "$BOARD" "Configuring ZRAM for 256MB RAM system" "info"

	cat <<-EOF > "${SDCARD}"/etc/default/armbian-zram-config
	ENABLED=true
	ZRAM_PERCENTAGE=25
	ZRAM_ALGORITHM=zstd
	SWAP_PRIORITY=100
	EOF

	chroot "${SDCARD}" /bin/bash -c "systemctl enable armbian-zram-config.service || true"

	display_alert "$BOARD" "ZRAM configured: 25% of physical RAM (priority 100)" "info"
}

function post_customize_image__beaglebadge_06_enable_cc33xx_ble() {
	display_alert "$BOARD" "Configuring CC33xx udev rule for BLE" "info"

	mkdir -p "${SDCARD}"/etc/udev/rules.d/
	cat <<-EOF > "${SDCARD}"/etc/udev/rules.d/99-cc33xx-ble.rules
	# Enable BLE when the cc33xx wlan physical interface initializes
	ACTION=="add", KERNEL=="phy[0-9]*", SUBSYSTEM=="ieee80211", DRIVERS=="cc33xx", RUN+="/bin/sh -c 'sleep 1; echo 1 > /sys/kernel/debug/ieee80211/%k/cc33xx/ble_enable'"
	EOF
}

function post_customize_image__zz_beaglebadge_10_disable_apt_periodic() {
	display_alert "$BOARD" "Disabling APT periodic services (post-config)" "info"

	# Disable and mask APT timers; timers are what trigger the services
	chroot "${SDCARD}" /bin/bash -c "
		systemctl disable apt-daily.timer apt-daily-upgrade.timer || true
		systemctl mask apt-daily.timer apt-daily-upgrade.timer apt-daily.service apt-daily-upgrade.service || true
	"

	# Override APT periodic config
	cat <<-EOF > "${SDCARD}"/etc/apt/apt.conf.d/02-armbian-periodic
	// Disabled for 256MB RAM optimization
	APT::Periodic::Enable "0";
	APT::Periodic::Update-Package-Lists "0";
	APT::Periodic::Download-Upgradeable-Packages "0";
	APT::Periodic::Unattended-Upgrade "0";
	APT::Periodic::AutocleanInterval "0";
	EOF

	# Add low-RAM APT settings
	cat <<-EOF > "${SDCARD}"/etc/apt/apt.conf.d/99-lowram
	// Reduce APT memory usage
	// APT::Cache-Limit "8388608";
	// APT::Cache-Start "8388608";
	// APT::Cache-Grow "1048576";
	Dir::Cache::Archives::MaxAge "0";
	Dir::Cache::Archives::MaxSize "50M";
	APT::AutoRemove::RecommendsImportant "0";
	APT::AutoRemove::SuggestsImportant "0";
	EOF
}



function post_customize_image__zz_beaglebadge_30_trim_systemd() {
	display_alert "$BOARD" "Trimming systemd services (post-config)" "info"

	# Services to disable (not mask - let them exist but not start)
	local services_to_disable=(
		"keyboard-setup.service"
		"console-setup.service"
		"rsyslog.service"
		"systemd-homed.service"
		"systemd-homed-activate.service"
	)

	for service in "${services_to_disable[@]}"; do
		chroot "${SDCARD}" /bin/bash -c "systemctl disable ${service} || true"
	done

	# Timers to mask (these are safe and won't conflict)
	local timers_to_mask=(
		"man-db.timer"
		"dpkg-db-backup.timer"
		"e2scrub_all.timer"
	)

	for timer in "${timers_to_mask[@]}"; do
		chroot "${SDCARD}" /bin/bash -c "systemctl mask ${timer} || true"
		local service="${timer%.timer}.service"
		chroot "${SDCARD}" /bin/bash -c "systemctl mask ${service} || true"
	done
}

function post_customize_image__zz_beaglebadge_40_limit_journal() {
	display_alert "$BOARD" "Limiting systemd journal size" "info"

	mkdir -p "${SDCARD}"/etc/systemd/journald.conf.d/
	cat <<-EOF > "${SDCARD}"/etc/systemd/journald.conf.d/00-journal-size.conf
	[Journal]
	SystemMaxUse=16M
	SystemMaxFileSize=4M
	RuntimeMaxUse=8M
	RuntimeMaxFileSize=2M
	MaxRetentionSec=1day
	ForwardToSyslog=no
	ForwardToKMsg=no
	ForwardToConsole=no
	ForwardToWall=no
	MaxLevelStore=info
	MaxLevelSyslog=info
	Compress=yes
	EOF
}

function post_customize_image__zz_beaglebadge_50_optimize_systemd_timeouts() {
	display_alert "$BOARD" "Optimizing systemd timeouts" "info"

	mkdir -p "${SDCARD}"/etc/systemd/system.conf.d/
	cat <<-EOF > "${SDCARD}"/etc/systemd/system.conf.d/99-lowram.conf
	[Manager]
	DefaultTimeoutStartSec=30s
	DefaultTimeoutStopSec=15s
	DefaultTimeoutAbortSec=15s
	DefaultDeviceTimeoutSec=30s
	# Cap processes to prevent out-of-memory fork bombs
	DefaultLimitNPROC=256:512
	EOF

	mkdir -p "${SDCARD}"/etc/systemd/coredump.conf.d/
	cat <<-EOF > "${SDCARD}"/etc/systemd/coredump.conf.d/disable.conf
	[Coredump]
	Storage=none
	ProcessSizeMax=0
	EOF
}

function post_customize_image__zz_beaglebadge_60_kernel_params() {
	display_alert "$BOARD" "Setting low-RAM kernel parameters" "info"

	cat <<-EOF > "${SDCARD}"/etc/sysctl.d/99-lowram.conf
	# Memory management for 256MB system
	vm.swappiness=100
	zswap.enabled=0
	vm.page-cluster=0
	vm.watermark_scale_factor=125
	vm.compact_memory=1
	vm.vfs_cache_pressure=150
	vm.dirty_background_ratio=5
	vm.dirty_ratio=10
	vm.min_free_kbytes=8192
	vm.overcommit_memory=1

	# Reduce kernel verbosity
	kernel.printk=3 4 1 3

	# Minimize network buffers
	net.core.rmem_max=262144
	net.core.wmem_max=262144
	net.ipv4.tcp_rmem=4096 65536 262144
	net.ipv4.tcp_wmem=4096 16384 262144
	net.core.netdev_max_backlog=1000

	# Reduce inotify limits
	fs.inotify.max_user_watches=8192
	fs.inotify.max_user_instances=256
	EOF
}