armbian-build/config/bootscripts/boot-nuvoton-ma35d1.cmd

# DO NOT EDIT THIS FILE
#
# Please edit /boot/armbianEnv.txt to set supported parameters
#
# Nuvoton MA35D1 boot script for Armbian

setenv overlay_error "false"
# default values
setenv rootdev "LABEL=armbi_root"
setenv verbosity "1"
setenv console "serial"
setenv bootlogo "false"
setenv rootfstype "ext4"
setenv docker_optimizations "on"
setenv earlycon "off"

# MA35D1 memory map - load addresses
# Memory layout (avoiding overlaps):
#   0x80000000 - Kernel (~15MB, ends ~0x80F00000)
#   0x81000000 - Temp load address for env/overlays
#   0x82000000 - Ramdisk (~20MB max, ends ~0x83400000)
#   0x84000000 - DTB (~64KB)
setenv load_addr "0x81000000"
setenv kernel_addr_r "0x80000000"
setenv ramdisk_addr_r "0x82000000"
setenv fdt_addr_r "0x84000000"

# Set default fdtfile if not set by U-Boot
test -n "${fdtfile}" || setenv fdtfile "nuvoton/ma35d1-iot-512m.dtb"

test -n "${distro_bootpart}" || setenv distro_bootpart 1

echo "Boot script loaded from ${devtype} ${devnum}:${distro_bootpart}"

# get PARTUUID of first partition on SD/eMMC the boot script was loaded from
echo "Detecting PARTUUID for ${devtype} device ${devnum}:${distro_bootpart}..."
setenv partuuid

if test "${devtype}" = "mmc"; then
	part uuid ${devtype} ${devnum}:${distro_bootpart} partuuid
fi

# Use PARTUUID if available (more reliable), otherwise fall back to rootdev label
if test -n "${partuuid}"; then
	setenv rootdev "PARTUUID=${partuuid}"
fi

# Load armbianEnv.txt if it exists
echo "Attempting to load ${prefix}armbianEnv.txt from ${devtype} ${devnum}:${distro_bootpart} to ${load_addr}..."
if load ${devtype} ${devnum}:${distro_bootpart} ${load_addr} ${prefix}armbianEnv.txt; then
	echo "Successfully loaded armbianEnv.txt (${filesize} bytes)"
	if env import -t ${load_addr} ${filesize}; then
		echo "Successfully imported environment from armbianEnv.txt"
	else
		echo "Warning: Failed to import environment from armbianEnv.txt"
	fi
else
	echo "armbianEnv.txt not found or failed to load - using default environment"
fi

echo "Final rootdev: ${rootdev}"

# Set console arguments
setenv consoleargs ""
if test "${console}" = "display" || test "${console}" = "both"; then
	setenv consoleargs "console=tty1 ${consoleargs}"
fi
if test "${console}" = "serial" || test "${console}" = "both"; then
	setenv consoleargs "console=ttyS0,115200n8 ${consoleargs}"
fi
if test "${earlycon}" = "on"; then
	setenv consoleargs "earlycon ${consoleargs}"
fi

if test "${bootlogo}" = "true"; then
	setenv consoleargs "splash plymouth.ignore-serial-consoles ${consoleargs}"
else
	setenv consoleargs "splash=verbose ${consoleargs}"
fi

# MA35D1 specific: limit kernel memory if needed (for OP-TEE reserved memory)
# OP-TEE reserves 0x8f800000-0x90000000 (8MB)
setenv bootargs "root=${rootdev} rootwait rootfstype=${rootfstype} ${consoleargs} consoleblank=0 loglevel=${verbosity} ubootpart=${partuuid} ${extraargs} ${extraboardargs}"

if test "${docker_optimizations}" = "on"; then
	setenv bootargs "${bootargs} cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory"
fi

echo "Final bootargs: ${bootargs}"

# Load kernel
echo "Loading kernel image to ${kernel_addr_r}..."
if load ${devtype} ${devnum}:${distro_bootpart} ${kernel_addr_r} ${prefix}Image; then
	echo "Kernel loaded successfully"
else
	echo "ERROR: Failed to load kernel!"
	exit
fi

# Load initramfs
echo "Loading initramfs to ${ramdisk_addr_r}..."
if load ${devtype} ${devnum}:${distro_bootpart} ${ramdisk_addr_r} ${prefix}uInitrd; then
	setenv ramdisk_arg "${ramdisk_addr_r}:${filesize}"
	echo "Initramfs loaded successfully (${filesize} bytes)"
else
	echo "Warning: Failed to load initramfs, booting without it"
	setenv ramdisk_arg "-"
fi

# Load device tree
echo "Loading device tree ${fdtfile} to ${fdt_addr_r}..."
if load ${devtype} ${devnum}:${distro_bootpart} ${fdt_addr_r} ${prefix}dtb/${fdtfile}; then
	echo "DTB loaded successfully"
else
	echo "ERROR: Failed to load device tree!"
	exit
fi

# Setup FDT for overlays
fdt addr ${fdt_addr_r}
fdt resize 65536

# Apply overlays if specified
for overlay_file in ${overlays}; do
	if load ${devtype} ${devnum}:${distro_bootpart} ${load_addr} ${prefix}dtb/nuvoton/overlay/${overlay_file}.dtbo; then
		echo "Applying kernel provided DT overlay ${overlay_file}.dtbo"
		fdt apply ${load_addr} || setenv overlay_error "true"
	fi
done

for overlay_file in ${user_overlays}; do
	if load ${devtype} ${devnum}:${distro_bootpart} ${load_addr} ${prefix}overlay-user/${overlay_file}.dtbo; then
		echo "Applying user provided DT overlay ${overlay_file}.dtbo"
		fdt apply ${load_addr} || setenv overlay_error "true"
	fi
done

if test "${overlay_error}" = "true"; then
	echo "Error applying DT overlays, restoring original DT"
	load ${devtype} ${devnum}:${distro_bootpart} ${fdt_addr_r} ${prefix}dtb/${fdtfile}
	fdt addr ${fdt_addr_r}
	fdt resize 65536
fi

# Resize FDT to actual size
fdt resize

echo "Booting kernel..."
echo "  kernel:   ${kernel_addr_r}"
echo "  initrd:   ${ramdisk_arg}"
echo "  dtb:      ${fdt_addr_r}"
booti ${kernel_addr_r} ${ramdisk_arg} ${fdt_addr_r}

# Recompile with:
# mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr