# DO NOT EDIT THIS FILE
#
# Please edit /boot/armbianEnv.txt to set supported parameters
#

setenv load_addr      "0x00300000"
setenv fdt_addr_r     "0x02040000" # max size 256 KiB (=dtb+dto+fdt_extrasize)
setenv kernel_addr_r  "0x02080000" # max size 16 MiB
setenv ramdisk_addr_r "0x03080000"

# default values
setenv overlay_error "false"
setenv rootdev "/dev/mmcblk0p1"
setenv rootfstype "ext4"
setenv verbosity "1"
setenv emmc_fix "off"
setenv spi_workaround "off"
setenv ethaddr "00:50:43:84:fb:2f"
setenv eth1addr "00:50:43:25:fb:84"
setenv eth2addr "00:50:43:84:25:2f"
setenv eth3addr "00:50:43:0d:19:18"
setenv fdt_extrasize "0x00010000"
setenv align_to "0x00001000"
setenv align_addr_next 'setexpr modulo ${addr_next} % ${align_to} ; if itest $modulo -gt 0 ; then setexpr addr_next ${addr_next} / ${align_to} ; setexpr addr_next ${addr_next} + 1 ; setexpr addr_next ${addr_next} * ${align_to} ; fi'

echo "Boot script loaded from ${devtype}"

echo "Loading environment from ${devtype} to ${load_addr} ..."
if load ${devtype} ${devnum} ${load_addr} ${prefix}armbianEnv.txt; then
	env import -t ${load_addr} ${filesize}
fi

setenv bootargs "console=ttyS0,115200 root=${rootdev} rootwait rootfstype=${rootfstype} ubootdev=${devtype} scandelay loglevel=${verbosity} usb-storage.quirks=${usbstoragequirks} ${extraargs}"

echo "Loading DT from ${devtype} to ${fdt_addr_r} ..."
load ${devtype} ${devnum} ${fdt_addr_r} ${prefix}dtb/${fdtfile}

fdt addr ${fdt_addr_r}
fdt resize ${fdt_extrasize}

if setexpr setexpr 1 + 1 ; then
	setenv setexpr "available"
else
	echo "** Command `setexpr` not available - using configured load addresses"
fi

if test "${setexpr}" = "available" ; then
	fdt header get fdt_totalsize totalsize
	if test "${fdt_totalsize}" = "" ; then
		echo "** Command `fdt header` does not support `get <var> <member>` - calculating DT size"

		# 'fdt resize' will align upwards to 4k address boundary
		setexpr fdt_totalsize ${filesize} / 0x1000
		setexpr fdt_totalsize ${fdt_totalsize} + 1
		setexpr fdt_totalsize ${fdt_totalsize} * 0x1000
		if test "${fdt_extrasize}" != "" ; then
			# add 'extrasize' before aligning
			setexpr fdt_totalsize ${fdt_totalsize} + ${fdt_extrasize}
		fi
	fi
	setexpr addr_next ${fdt_addr_r} + ${fdt_totalsize}
	run align_addr_next
	setenv kernel_addr_r ${addr_next}
fi

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

for overlay_file in ${user_overlays}; do
	if load ${devtype} ${devnum} ${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} ${fdt_addr_r} ${prefix}dtb/${fdtfile}
	fdt addr ${fdt_addr_r}
	fdt resize ${fdt_extrasize}
	# no need to recalculate next load address here
else
	if test -e ${devtype} ${devnum} ${prefix}dtb/overlay/${overlay_prefix}-fixup.scr; then
		load ${devtype} ${devnum} ${load_addr} ${prefix}dtb/overlay/${overlay_prefix}-fixup.scr
		echo "Applying kernel provided DT fixup script (${overlay_prefix}-fixup.scr)"
		source ${load_addr}
	fi
	if test -e ${devtype} ${devnum} ${prefix}fixup.scr; then
		load ${devtype} ${devnum} ${load_addr} ${prefix}fixup.scr
		echo "Applying user provided fixup script (fixup.scr)"
		source ${load_addr}
	fi
fi

# eMMC fix
if test "${emmc_fix}" = "on"; then
	echo "Applying eMMC compatibility fix to the DT"
	fdt rm /soc/internal-regs/sdhci@d8000/ cd-gpios
	fdt set /soc/internal-regs/sdhci@d8000/ non-removable
fi

# SPI - SATA workaround
if test "${spi_workaround}" = "on"; then
	echo "Applying SPI workaround to the DT"
	fdt set /soc/internal-regs/sata@e0000 status "disabled"
	fdt set /soc/internal-regs/sata@a8000 status "disabled"
	fdt set /soc/spi@10680 status "okay"
	fdt set /soc/spi@10680/spi-flash@0 status "okay"
fi

echo "Loading kernel from ${devtype} to ${kernel_addr_r} ..."
load ${devtype} ${devnum} ${kernel_addr_r} ${prefix}zImage

if test "${setexpr}" = "available" ; then
	setexpr addr_next ${kernel_addr_r} + ${filesize}
	run align_addr_next
	setenv ramdisk_addr_r ${addr_next}
fi

echo "Loading ramdisk from ${devtype} to ${ramdisk_addr_r} ..."
load ${devtype} ${devnum} ${ramdisk_addr_r} ${prefix}uInitrd

echo "Booting kernel ..."
bootz ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}

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