# Set defaults for missing env variables.
setenv boot_dir ${prefix}
test -n ${loader_rev}           || setenv loader_rev 0
test -n ${id}                   || setenv id SWANDR
test -n ${emmc}                 || setenv emmc 0
test -n ${fbconsole}            || setenv fbconsole 9
test -n ${uart_port}            || setenv uart_port 0
test -n ${earlycon}             || setenv earlycon 0
test -n ${r2p_action}           || setenv r2p_action bootloader
test -n ${autoboot}             || setenv autoboot 0
test -n ${autoboot_list}        || setenv autoboot_list 0

# Set logging params for each serial type.
setenv uarta "no_console_suspend console=ttyS0,115200,8n1 loglevel=8 androidboot.console=ttyS0"
setenv uartb "no_console_suspend console=ttyS1,115200,8n1 loglevel=8 androidboot.console=ttyS1"
setenv uartc "no_console_suspend console=ttyS2,115200,8n1 loglevel=8 androidboot.console=ttyS2"
setenv no_args "console=null"
setenv usblg "usb_logging loglevel=8"
setenv uarta_early "earlycon=uart,mmio32,0x70006000"
setenv uartb_early "earlycon=uart,mmio32,0x70006040"
setenv uartc_early "earlycon=uart,mmio32,0x70006200"

# Set important addresses.
setenv kernload 0xA0000000
setenv initaddr 0x92000000
setenv fdtrload 0xA8000000
setenv fdtraddr 0x8d000000

# Set temp addresses.
setenv enviraddr 0x8d100000
setenv fdtovaddr 0x8d200000


# L4T Loader check. Min rev 4.
if test "${loader_rev}" < 4; then echoe Old L4T Loader! Update bootloader folder!; echoe Rebooting in 10s..; sleep 10; reset; fi


# Set SoC info.
if test ${t210b01} = 1; then setenv plat_info T210B01; else setenv plat_info T210; fi

# Set SKU info. Frig is used instead of Fric for compatibility reasons.
if   test ${sku} = 0; then setenv sku_info ODIN; setenv sku_rev a00; setenv variant odin
elif test ${sku} = 1; then setenv sku_info ODIN; setenv sku_rev b01; setenv variant modin
elif test ${sku} = 2; then setenv sku_info VALI; setenv sku_rev a00; setenv variant vali
elif test ${sku} = 3; then setenv sku_info FRIG; setenv sku_rev a00; setenv variant fric
fi

# Print platform info.
echo PLAT:   ${plat_info} SKU: ${sku_info}
echo Serial: ${device_serial_restricted}
echo BT MAC: ${device_bt_mac}
echo WF MAC: ${device_wifi_mac}


# Set MMC device.
setenv mmcnum 1
if test ${emmc} = 1; then
    echoe emmc enabled
    setenv mmcnum 0
fi
mmc dev ${mmcnum}

# Load Kernel.
if gpio input 190 && test ${recovery} = "0"; then
    # Normal Kernel.
    if part start mmc ${mmcnum} boot boot_start; then echo Boot partition found
    else echoe Boot partition not found!; echoe Rebooting in 10s..; sleep 10; reset; fi
    part size mmc ${mmcnum} boot boot_size
else
    # Recovery.
    if part start mmc ${mmcnum} recovery boot_start; then echo Recovery partition found
    else echoe Recovery partition not found!; echoe Rebooting in 10s..; sleep 10; reset; fi
    part size mmc ${mmcnum} recovery boot_size

    echo Applying WAR: USB3 required for recovery
    setenv usb3_enable 1
fi
mmc read ${kernload} ${boot_start} ${boot_size};

# Load DT img.
if part start mmc ${mmcnum} dtb dtb_start; then echo DTB partition found
else echoe DTB partition not found!; echoe Rebooting in 10s..; sleep 10; reset; fi
part size mmc ${mmcnum} dtb dtb_size
mmc read ${fdtrload} ${dtb_start} ${dtb_size}

# Check for Super.
if part start mmc ${mmcnum} super super_start; then echo Super partition found
else echoe Super partition not found!; echoe Rebooting in 10s..; sleep 10; reset; fi

# Get DT from image.
if dtimg load ${fdtrload} ${sku} ${fdtraddr} fdtrsize; then echo Device Tree for SKU ${sku_info} loaded
else echoe Device Tree load for SKU ${sku_info} failed!; echoe Rebooting in 10s..; sleep 10; reset; fi

# Load dtb and resize to fit overlays.
fdt addr ${fdtraddr} ${fdtrsize}
fdt resize 16384


# Dtb sanity checks.
if test ${sku_info} != ${fdt_id_text} -o ${sku_rev} != ${fdt_rev}; then
	echoe Device Tree loaded not correct! (SKU: ${fdt_id_text}, Rev: ${fdt_rev})
	echoe Expected SKU: ${sku_info}, Rev: ${sku_rev}
	echoe Rebooting in 10s..; sleep 10; reset
fi


# Patch dtb with overlays if they exist.
if test -n ${dtb_overlays}; then
	echo loading dtb overlays: ${dtb_overlays}
	for ov in ${dtb_overlays}; do
		echo Setting ${ov}...
		# Check if DT overlay and apply it.
		if load mmc ${devnum}:${distro_bootpart} ${fdtovaddr} ${boot_dir}/overlays/${ov}.dtbo; then
			if fdt apply ${fdtovaddr}; then echo Successfully loaded ${ov}.dtbo...
			else echoe Overlay ${ov}.dtbo loading failed!; echoe Rebooting in 10s..; sleep 10; reset; fi
		fi
	done
fi

# UART Logging.
if   test ${uart_port} = 1; then
	echoe UART-A logging enabled
	setenv bootargs_extra ${bootargs_extra} ${uarta}
	fdt set /serial@70006000 compatible nvidia,tegra20-uart
	fdt set /serial@70006000 status okay

	if test ${earlycon} = 1; then
		echoe Early  logging enabled
		setenv bootargs_extra ${bootargs_extra} ${uarta_early}
		fdt set /serial@70006000 reset-names noreset
	fi
elif test ${uart_port} = 2; then
	echoe UART-B logging enabled
	setenv bootargs_extra ${bootargs_extra} ${uartb}
	fdt set /serial@70006040 compatible nvidia,tegra20-uart
	fdt set /serial@70006040/joyconr status disabled

	if test ${earlycon} = 1; then
		echoe Early  logging enabled
		setenv bootargs_extra ${bootargs_extra} ${uartb_early}
		fdt set /serial@70006040 reset-names noreset
	fi
elif test ${uart_port} = 3; then
	echoe UART-C logging enabled
	setenv bootargs_extra ${bootargs_extra} ${uartc}
	fdt set /serial@70006200 compatible nvidia,tegra20-uart
	fdt set /serial@70006200/joyconl status disabled

	if test ${earlycon} = 1; then
		echoe Early  logging enabled
		setenv bootargs_extra ${bootargs_extra} ${uartc_early}
		fdt set /serial@70006200 reset-names noreset
	fi
else
	setenv bootargs_extra ${bootargs_extra} ${no_args}
fi

# USB Serial Logging.
if test ${uart_port} = 4; then setenv bootargs_extra ${usblg} ${bootargs_extra}; echoe USB Serial logging enabled; fi

# Disable Joycon Rails.
if test ${jc_rail_disable} = 1; then
	echoe Joycon Rails disabled
	fdt set /serial@70006040 status disabled
	fdt set /serial@70006040/joyconr status disabled
	fdt set /serial@70006200 status disabled
	fdt set /serial@70006200/joyconl status disabled
fi

# Disable CEC.
if test ${sku} = 2 -o ${cec_disable} = 1; then setenv bootargs_extra ${bootargs_extra} "androidboot.cec_disable=1"; fi

# Disable Touch panel tuning.
if test ${touch_skip_tuning} = 1; then setenv bootargs_extra ${bootargs_extra} "ftm4.skip_tuning=1"; fi

# Disable Bluetooth ERTM.
if test ${bt_ertm_disable} = 1; then setenv bootargs_extra ${bootargs_extra} "bluetooth.disable_ertm=1"; fi


# Enable eMMC.
if test ${emmc} = 1; then
	fdt set /mmc@700b0600 status okay
	fdt set /firmware/android boot_devices 700b0600.mmc

	# Check if eMMC is initialized in 1-bit mode.
	if test "${mmc_1bit}" = 1; then
		echoe eMMC is initialized in 1-bit mode!
		fdt set /mmc@700b0600 bus-width <0x1>
		fdt set /mmc@700b0600 uhs-mask <0x7F>
	fi
else
	fdt set /firmware/android boot_devices 700b0000.mmc
fi

# Check if SD is initialized in 1-bit mode.
if test "${sd_1bit}" = 1; then
	echoe SD Card is initialized in 1-bit mode!
	fdt set /mmc@700b0600 bus-width <0x1>
	fdt set /mmc@700b0600 uhs-mask <0x7F>
fi

# Set serial number.
if test -n ${device_serial_restricted};   then fdt set / serial-number ${device_serial_restricted}; fi

# Load mac address info file from sd
if fatload mmc 1:1 ${enviraddr} switchroot/joycon_mac.ini; then
    if ini "joycon_00" ${enviraddr}; then echo Found Joycon Pairing Info; else echoe Malformed joycon_mac.ini!; fi
    if test -n "${host}" -a "${host}" = "00:00:00:00:00:00"; then ini "joycon_01" ${enviraddr}; fi
fi

# Set BT mac.
if test ! -n "${bt_mac}"; then
    if test -n "${host}" -a "${host}" != "00:00:00:00:00:00"; then setenv bt_mac ${host}; else setenv bt_mac ${device_bt_mac}; fi;
fi

# Set Wi-Fi mac. Use BT MAC with FF as the last byte.
if test ! -n "${wifi_mac}"; then
    if test -n "${host}" -a "${host}" != "00:00:00:00:00:00"; then setexpr wifi_mac sub "\:..$" ":FF" ${host}; else setenv wifi_mac ${device_wifi_mac}; fi;
fi

echo CAL0 BT MAC: ${bt_mac}
echo CAL0 WF MAC: ${wifi_mac}

# Import to DT.
fdt set /chosen nvidia,wifi-mac ${wifi_mac}
fdt set /chosen nvidia,bluetooth-mac ${bt_mac}


# Set kernel cmdline.
setenv bootargs ${bootargs_extra} "ro init=/init firmware_class.path=/vendor/firmware \
 pmc_r2p.enabled=1 pmc_r2p.action=${r2p_action} \
 pmc_r2p.param1=${autoboot} pmc_r2p.param2=${autoboot_list} \
 fbcon=map:${fbconsole} consoleblank=0 \
 latency_allowance.ptsa_rework \
 nvdec_enabled=0 tegra_fbmem=0x800000@0xf5a00000 \
 androidboot.bootloader=${blver} androidboot.hardware=nx \
 androidboot.hardware.sku=${variant} androidboot.serialno=${device_serial_restricted} \
 androidboot.modem=none androidboot.dtb_idx=${sku} "

# Boot kernel.
echo Launching Kernel!
bootm ${kernload} ${kernload} ${fdtraddr}

echoe Failed to launch Kernel!
echoe
echoe Rebooting in 10s..

sleep 10
reset