BTRFS file system for MAIN and rootfs partition (#65)

* BTRFS file system for MAIN and rootfs partition

.github/workflows/build.yml

@@ -91,7 +91,7 @@ jobs:
     - uses: actions/upload-artifact@v3
       with:
         name: rootfs (uClibc)
-        path: ${{ inputs.submodule || '.' }}/output/images/rootfs.ext4
+        path: ${{ inputs.submodule || '.' }}/output/images/rootfs.btrfs
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn`   
 
   build-image-musl:
@@ -175,7 +175,7 @@ jobs:
     - uses: actions/upload-artifact@v3
       with:
         name: rootfs (musl)
-        path: ${{ inputs.submodule || '.' }}/output/images/rootfs.ext4
+        path: ${{ inputs.submodule || '.' }}/output/images/rootfs.btrfs
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn` 
 
   build-sdk-uclibc-static:

board/miyoo/boot/configs/manifest

@@ -1,11 +0,0 @@
-! manifest
-! format: each line corresponds to one file to be copied over
-! from_file(as_appears_in_this_directory) to_file(relative_to_root_of_main_partition)
-!   to_file is optional; if missing will use from_file
-.backlight.conf
-.volume.conf
-.buttons.conf
-.batterylow.conf
-gmenu2x.conf gmenu2x/gmenu2x.conf
-input.conf gmenu2x/input.conf
-! leave this last line here

board/miyoo/boot/firstboot

@@ -154,6 +154,7 @@ console_unknown_func(){
 ## Default CONSOLE_VARIANT for st7789s screens
 default_console_func(){
 	echo "CONSOLE_VARIANT=pocketgo" > ${MOUNTDIR}/console.cfg
+	cp ${MOUNTDIR}/suniv-f1c100s-miyoo-4bit.dtb ${MOUNTDIR}/suniv-f1c100s-miyoo.dtb
 	# No need to overwrite uboot FORCE version for default so continue procedure
 	CONSOLE_OVERWRITE=false
 }
@@ -375,18 +376,22 @@ if ! $FOUND_CONSOLE && $FOUND_CONSOLE_AUTO && $CONSOLE_DETECTED; then
 		case $CHOICE in
 			1)
 				echo "CONSOLE_VARIANT=q20" > ${MOUNTDIR}/console.cfg
+				cp ${MOUNTDIR}/suniv-f1c100s-miyoo-4bit.dtb ${MOUNTDIR}/suniv-f1c100s-miyoo.dtb
 				;;
 			2)
 				echo "CONSOLE_VARIANT=q90" > ${MOUNTDIR}/console.cfg
+				cp ${MOUNTDIR}/suniv-f1c100s-miyoo-4bit.dtb ${MOUNTDIR}/suniv-f1c100s-miyoo.dtb
 				;;
 			3)
 				echo "CONSOLE_VARIANT=v90" > ${MOUNTDIR}/console.cfg
+				cp ${MOUNTDIR}/suniv-f1c100s-miyoo-4bit.dtb ${MOUNTDIR}/suniv-f1c100s-miyoo.dtb
 				;;
 			4)
 				default_console_func
 				;;
 			5)
 				echo "CONSOLE_VARIANT=pocketgo_TE" > ${MOUNTDIR}/console.cfg
+				cp ${MOUNTDIR}/suniv-f1c100s-miyoo-4bit.dtb ${MOUNTDIR}/suniv-f1c100s-miyoo.dtb
 				;;
 			*)
 				dialog --timeout 4 --msgbox "Invalid choice. Exiting and selecting default device from autodetection." 0 0
@@ -518,21 +523,8 @@ SD_MAX_AVAIL_SIZE_IN_KiB=$((SD_MAX_AVAIL_SIZE * 512 / 1024))
 RESIZE_COMMENCED=false
 if (dialog --clear --stdout --ok-label YES --cancel-label NO --title "   AUTO-RESIZE" \
    --colors --pause "\n\n       \ZuExpand MAIN partition?\Zn\n\n   Select an option & press START
-   \n\n             \ZbWARNING:\Zn\n       After 10s auto-resize\n   of FAT32 partition will begin." 15 60 10); then
+   \n\n             \ZbWARNING:\Zn\n       After 10s auto-resize\n   of BTRFS partition will begin." 15 60 10); then
 	clear
-	RESIZE_ABORT=false
-	if test "$SD_SIZE_IN_GiB" -gt 128; then
-		if (dialog --clear --stdout --ok-label NO --cancel-label YES --title "   \Zb\Z1WARNING!\Zn" \
-		--colors --pause "\nYour SD card exceeds max. size for auto-resizing! 
-		\n\nWe could however expand it to 118GB. \n\n           \ZuDo you AGREE?\Zn
-		\n\n\ZbINFO: For microSD >128GB big we\n      recommend to use your PC!\Zn" 0 0 30 || test $? -eq 255); then
-			dialog --clear --colors --timeout 2 --msgbox " FAT resizing \ZuABORTED!\Zn" 5 27
-			clear
-			RESIZE_ABORT=true
-		else
-			SD_MAX_AVAIL_SIZE_IN_KiB=123731968
-		fi
-	fi
 	SD_MAX_AVAIL_SIZE_IN_GiB=$(echo "scale=1; ${SD_MAX_AVAIL_SIZE_IN_KiB} / 1024 / 1024" | bc) #only to inform user about end point for resize
 	SD_MAX_AVAIL_SIZE_IN_GB=$(echo "scale=1; ${SD_MAX_AVAIL_SIZE_IN_KiB} * 1024 / 1000 / 1000 / 1000" | bc)
 	P4_SIZE_IN_GB=$(echo "scale=1; ${P4_SIZE} * 512 / 1000 / 1000 / 1000" | bc)
@@ -548,21 +540,15 @@ if (dialog --clear --stdout --ok-label YES --cancel-label NO --title "   AUTO-RE
 	echo "The full size of your SD is ${SD_SIZE_IN_MiB}MB large" | tee -a ${LOG}
 	echo "Unallocated space available for resizing equals ${SD_MAX_UNALL_SIZE_IN_GiB}GB," | tee -a ${LOG}
 	echo "and more precisely it's ${SD_MAX_UNALL_SIZE_IN_MiB}MB big" | tee -a ${LOG}
-	if ! $RESIZE_ABORT; then
 	echo "Resizing the MAIN partition to ${SD_MAX_AVAIL_SIZE_IN_GiB}GB." | tee -a ${LOG}
-		echo "This can take A LONG TIME, so be patient." | tee -a ${LOG}
+	echo "This can take a few seconds." | tee -a ${LOG}
 	umount /dev/mmcblk0p4 | tee -a ${LOG}
-		fsck.fat -y /dev/mmcblk0p4 | tee -a ${LOG}
+	P4_START_POINT=` parted /dev/mmcblk0 unit MB print | grep '4' | tail -n1 | awk '{print $2}'`
-		#TODO: fix outputting logs from fatresize stdout
+	parted -a optimal /dev/mmcblk0 --script rm 4  | tee -a ${LOG}
-		fatresize --size="${SD_MAX_AVAIL_SIZE_IN_KiB}"ki -v -p /dev/mmcblk0p4 -n4 | tee -a ${LOG}
+	parted -a optimal /dev/mmcblk0 --script mkpart primary $P4_START_POINT 100%  | tee -a ${LOG}
-		fsck.fat -y /dev/mmcblk0p4 | tee -a ${LOG}
+	partx -u /dev/mmcblk0  | tee -a ${LOG}
-		echo -n -e \\xEB\\x58\\x90 > /dev/mmcblk0p4
+	mount /dev/mmcblk0p4 ${HOME} | tee -a ${LOG}
-		sync
+	btrfs filesystem resize max ${HOME} | tee -a ${LOG}
-		mount -t vfat -o rw,sync,utf8 /dev/mmcblk0p4 ${HOME} | tee -a ${LOG}
-	else
-		echo "MAIN fat partition resizing was aborted!" | tee -a ${LOG}
-		sleep 2
-	fi
 	RESIZE_COMMENCED=true
 fi
 
@@ -577,32 +563,14 @@ mv "${MOUNTDIR}/firstboot" "${MOUNTDIR}/firstboot.done" | tee -a ${LOG}
 # copy over the config files
 echo "Copying default configuration files into place..." | tee -a ${LOG}
 if $BITTBOY_CONFIG; then
-	cp "${HOME}/gmenu2x/input_bittboy.conf" "${MOUNTDIR}/configs/input.conf"
+	cp "${HOME}/gmenu2x/input_bittboy.conf" "${HOME}/gmenu2x/input.conf"
 elif $MIYOO_CONFIG; then
-	cp "${HOME}/gmenu2x/input_miyoo.conf" "${MOUNTDIR}/configs/input.conf"
+	cp "${HOME}/gmenu2x/input_miyoo.conf" "${HOME}/gmenu2x/input.conf"
 fi
 mount -o remount,ro "${MOUNTDIR}" | tee -a ${LOG}
-if test -r "${BASEDIR}/configs/manifest"; then
-	cat "${BASEDIR}/configs/manifest" | while read -r LINE; do
-		if test "${LINE}" == "${LINE#!}" -a "${LINE}" != "" ; then
-			set -- ${LINE}
-			# 1               2
-			# source_filename target_filename/inside main/
-			if test -r "${BASEDIR}/configs/$1"; then
-				TO="$2"
-				if test "${TO}" == ""; then
-					TO="$1"
-				fi
-				echo "Copying $1 to ${HOME}/$TO..." | tee -a ${LOG}
-				cp -f "${BASEDIR}/configs/$1" "${HOME}/$TO" | tee -a ${LOG}
-			fi
-		fi
-	done
-fi
-echo "Renaming ${HOME}/retroarch directory to ${HOME}/.retroarch" | tee -a ${LOG}
-mv "${HOME}/retroarch" "${HOME}/.retroarch" | tee -a ${LOG}
 
-echo
+echo "fix permsissions"  | tee -a ${LOG}
+chmod -R +x /mnt/  | tee -a ${LOG}
 
 sync
 echo "firstboot script finished." | tee -a ${LOG}
@@ -610,7 +578,7 @@ touch ${HOME}/firstboot.completed
 echo
 
 # Reboot device if CONSOLE_VARIANT was overwritten from $CHOICE so that it could be applied in u-boot by readID 
-## or resizing FAT partition has completed / found firstboot custom script
+## or resizing BTRFS partition has completed / found firstboot custom script
 if ($CONSOLE_OVERWRITE || $RESIZE_COMMENCED || test -r "${BASEDIR}/firstboot.custom.sh"); then
 	safe_reboot_func
 else

board/miyoo/genimage-sdcard.cfg

@@ -4,6 +4,7 @@ image bootfs.vfat {
 		files = {
 			"zImage",
 			"suniv-f1c100s-miyoo.dtb",
+			"suniv-f1c100s-miyoo-4bit.dtb",
 			"boot.scr",
 			"boot/miyoo-boot.bmp",
 			"boot/autorun.inf",
@@ -14,32 +15,10 @@ image bootfs.vfat {
 			"boot/modules.custom.sh",
 			"boot/normalboot.custom.sh",
 		}
-		file configs/manifest {
-			image = "boot/configs/manifest"
-		}
-		file configs/.volume.conf {
-			image = "boot/configs/.volume.conf"
-		}
-		file configs/.buttons.conf {
-			image = "boot/configs/.buttons.conf"
-		}
-		file configs/.batterylow.conf {
-			image = "boot/configs/.batterylow.conf"
-		}
-		file configs/.backlight.conf {
-			image = "boot/configs/.backlight.conf"
-		}
 	}
 	size = 8M
 }
 
-image mainfs.vfat {
-	vfat {
-		label = "MAIN"
-	}
-	mountpoint = "../../../images/main/"
-	size = 640M
-}
 
 
 image ${IMAGE_NAME:-miyoo-cfw-2.0.0.img} {
@@ -60,7 +39,7 @@ image ${IMAGE_NAME:-miyoo-cfw-2.0.0.img} {
 
 	partition rootfs {
 		partition-type = 0x83
-		image = "rootfs.ext4"
+		image = "rootfs.btrfs"
 	}
 
 	partition swap {
@@ -70,8 +49,8 @@ image ${IMAGE_NAME:-miyoo-cfw-2.0.0.img} {
 	}
 
 	partition main {
-		partition-type = 0xc
+		partition-type = 0x83
 		bootable = "false"
-		image = "mainfs.vfat"
+		image = "main.img"
 	}
 }

board/miyoo/main/apps/fsck/fsck.sh

@@ -1,33 +0,0 @@
-#!/bin/sh
-
-sync
-
-echo " "
-echo "Checking FAT filesystem..."
-echo " "
-sleep 2
-
-if dmesg | grep "mmcblk0p1"; then
-echo -e "\e[31mUnclean shutdown detected.\e[0m"
-echo -e "\e[32mChecking FAT32 (BOOT) partition...\e[0m" 
-fsck.vfat -a /dev/mmcblk0p1
-fi
-
-if dmesg | grep "mmcblk0p4"; then
-echo -e "\e[31mUnclean shutdown detected.\e[0m"
-echo -e "\e[32mChecking FAT32 (MAIN) partition...\e[0m" 
-fsck.vfat -a /dev/mmcblk0p4
-echo " "
-echo "Rebooting device, please wait..."
-echo " "
-sleep 2
-sync
-reboot
-fi
-
-echo "Finished!"
-echo " "
-echo " "
-sync
-read -t 2
-sleep 1

board/miyoo/main/apps/usb-hid/usb-hid.sh

@@ -5,20 +5,14 @@ st_error_func(){
 st_exec_func(){
 	st -k -e "/bin/sh" "-c" "${1}"
 }
-
+	echo peripheral > /sys/devices/platform/soc/1c13000.usb/musb-hdrc.1.auto/mode
-MUSB_MODE=$(cat /sys/devices/platform/soc/1c13000.usb/musb-hdrc.1.auto/mode)
+	killall umtprd
-if ! (test "${MUSB_MODE}" = "b_peripheral"); then
+	modprobe -r g_serial
-	st_error_func "\n\n\n\n\n\n\n\n         First connect handheld to device!"
+	mount none /sys/kernel/config -t configfs
-	exit
-else
-	gadget-vid-pid-remove 0x1d6b:0x0104
 	gadget-hid
-
 	st_exec_func "\
 	echo -e \"\e[32m\n\n\n\n\n\n               Starting USB-HID mode\e[0m\n\n\n\"; \
 	sleep 1; \
 	python /mnt/apps/usb-hid/usb-hid.py"
 
 	gadget-vid-pid-remove 0x1d6b:0x0104
-	gadget-ms /dev/mmcblk0p1 /dev/mmcblk0p4
-fi

board/miyoo/main/apps/usb-mtd/usb-mtd.sh

@@ -0,0 +1,6 @@
+#!/bin/busybox sh
+
+echo peripheral > /sys/devices/platform/soc/1c13000.usb/musb-hdrc.1.auto/mode
+modprobe -r g_serial
+killall umtprd
+umtprd &

board/miyoo/main/apps/usb-serial-console/usb-serial.sh

@@ -1,2 +1,4 @@
 #!/bin/busybox sh
 echo peripheral > /sys/devices/platform/soc/1c13000.usb/musb-hdrc.1.auto/mode
+killall umtprd
+modprobe g_serial

board/miyoo/main/gmenu2x/sections/applications/fsck

@@ -1,3 +0,0 @@
-title=File System Check
-exec=/usr/bin/st
-params=-k -e /mnt/apps/fsck/fsck.sh

board/miyoo/main/gmenu2x/sections/applications/usb-mtd

@@ -0,0 +1,3 @@
+title=USB MTD
+description=USB MTD mass storage
+exec=/mnt/apps/usb-mtd/usb-mtd.sh

board/miyoo/main/gmenu2x/sections/applications/usb-serial-console

@@ -0,0 +1,3 @@
+title=USB serial console
+description=USB Serial console
+exec=/mnt/apps/usb-serial-console/usb-serial.sh

board/miyoo/main/gmenu2x/sections/applications/usb-serial-mass-storage

@@ -1,3 +0,0 @@
-title=USB serial MS
-description=USB Serial mass storage mode
-exec=/mnt/apps/usb-serial-mass-storage/usb-serial-mass-storage.sh

board/miyoo/rootfs/etc/inittab

@@ -20,7 +20,7 @@
 ::sysinit:/bin/mkdir -p /dev/shm
 ::sysinit:/bin/mount -a
 ::sysinit:/bin/hostname -F /etc/hostname
-::sysinit:/bin/mount /dev/mmcblk0p4 /mnt -t vfat -o rw,sync,utf8
+::sysinit:/bin/mount /dev/mmcblk0p4 /mnt -o discard=async,noatime,nodiratime,exec
 ::sysinit:/bin/mount /dev/mmcblk0p1 /boot -t vfat -o ro,exec,sync,utf8
 ::sysinit:/sbin/mkswap /dev/mmcblk0p3
 ::sysinit:/sbin/swapon /dev/mmcblk0p3

board/miyoo/rootfs/etc/main

@@ -26,9 +26,9 @@ fi
 # load kernel modules
 
 # load usb gadget
-mount -t configfs none /sys/kernel/config >> "${LOGS}" 2>&1
+modprobe g_ffs idVendor=0x1fc9 idProduct=0x0146 iSerialNumber="01234567" iProduct="Miyoo CFW 2.0" iManufacturer="Miyoo Handheld" functions=mtp  >> "${LOGS}" 2>&1
-gadget-ms /dev/mmcblk0p1 /dev/mmcblk0p4 >> "${LOGS}" 2>&1
+mkdir /dev/ffs-mtp && mount -t functionfs mtp /dev/ffs-mtp  >> "${LOGS}" 2>&1
-
+umtprd >> "${LOGS}" 2>&1 &
 
 # Load the expected one screen driver from here with modprobe 
 ## automatically from rootfs/lib/modules/VERSION
@@ -77,19 +77,18 @@ elif test -r "${HOME}/firstboot.completed"; then
 fi
 
 if !(grep -q FAT_CHECK\=\0 "${HOME}/options.cfg"); then
-##Check if fat32 is flagged as "dirty", and if so unmount, repair, remount
+##Check if FAT16 is flagged as "dirty", and if so unmount, repair, remount
-	if dmesg | grep "mmcblk0p4" > /dev/null;  then
+	if dmesg | grep "mmcblk0p1" > /dev/null;  then
-		echo -e "\e[31mUnclean shutdown detected.\e[0m"
+		echo -e "\e[31mDirty sectors detected.\e[0m"
-		echo -e "\e[32mChecking FAT32 partition...\e[0m"
+		echo -e "\e[32mChecking&Repairing FAT16 BOOT partition...\e[0m"
-		umount /dev/mmcblk0p4
+		umount /dev/mmcblk0p1
-		fsck.vfat -y /dev/mmcblk0p4 > /dev/null; 
+		fsck.vfat -y /dev/mmcblk0p1 > /dev/null; 
-		mount /dev/mmcblk0p4 "${HOME}" -t vfat -o rw,sync,utf8
+		mount /dev/mmcblk0p1 "${BOOTDIR}" -t vfat -o ro,exec,sync,utf8
 		echo -e "\e[32mCheck complete.\e[0m"
 	fi
 fi
 
 clear
-
 # try to read what handheld we're on
 if test -r "${BOOTDIR}/console.cfg"; then
 	source "${BOOTDIR}/console.cfg"

board/miyoo/rootfs/etc/umtprd/umtprd.conf

@@ -0,0 +1,88 @@
+#
+# uMTP Responder config file
+# Must be copied to /etc/umtprd/umtprd.conf
+#
+
+# Loop / daemon mode
+# Set to 1 to don't shutdown uMTPrd when the link is disconnected.
+
+loop_on_disconnect 1
+
+#storage command : Create add a storage entry point. Up to 16 entry points supported
+#Syntax : storage "PATH" "NAME"
+
+storage "/"                     "rootfs" "ro"
+storage "/mnt"                  "MAIN" "rw"
+storage "/boot"                     "BOOT" "ro"
+
+#
+# Uncomment the following line if you want to 
+# override the system default umask value for 
+# the uploaded files.
+#
+
+umask 000
+
+# Set the USB manufacturer string
+
+manufacturer "Miyoo CFW 2.0"
+
+# Set the USB Product string
+
+product "Miyoo Handheld"
+
+# Set the USB Serial number string
+
+serial "01234567"
+
+# Set the USB interface string. Should be always "MTP"
+
+interface "MTP"
+
+# Set the USB Vendor ID, Product ID and class
+
+usb_vendor_id  0x1D6B # Linux Foundation
+usb_product_id 0x0100 # PTP Gadget
+usb_class 0x6         # Image
+usb_subclass 0x1      # Still Imaging device
+usb_protocol 0x1      #
+
+# Device version
+
+usb_dev_version 0x3008
+
+# inotify support
+# If you want disable the events support (beta), uncomment the following line :
+
+# no_inotify 0x1
+
+#
+# Internal buffers size
+#
+
+# Internal default usb_max_rd_buffer_size and usb_max_wr_buffer_size value set to 0x10000.
+# Internal default read_buffer_cache_size value set to 0x100000.
+# Uncomment the following lines to reduce the buffers sizes to fix USB issues on iMX6 based systems.
+
+ usb_max_rd_buffer_size 0x8000      # MAX usb read size. Must be a multiple of 512 and be less than read_buffer_cache_size
+ usb_max_wr_buffer_size 0x8000      # MAX usb write size. Must be a multiple of 512.
+# read_buffer_cache_size 0x8000     # Read file cache buffer. Must be a 2^x value.
+
+#
+# USB gadget device driver path
+#
+
+########################################################################
+#
+# -- Generic FunctionFS Mode --
+#
+########################################################################
+
+usb_functionfs_mode 0x1
+
+usb_dev_path   "/dev/ffs-mtp/ep0"
+usb_epin_path  "/dev/ffs-mtp/ep1"
+usb_epout_path "/dev/ffs-mtp/ep2"
+usb_epint_path "/dev/ffs-mtp/ep3"
+
+usb_max_packet_size 0x200

board/miyoo/scripts/genimage.sh

@@ -17,7 +17,7 @@ cp -r board/miyoo/main "${BINARIES_DIR}"
 test -d "${BINARIES_DIR}/gmenu2x" && cp -r "${BINARIES_DIR}/gmenu2x/" "${BINARIES_DIR}/main/"
 test -d "${BINARIES_DIR}/emus" && cp -r "${BINARIES_DIR}/emus/" "${BINARIES_DIR}/main/"
 if test -d "${BINARIES_DIR}/retroarch";then
-	cp -r "${BINARIES_DIR}/retroarch/" "${BINARIES_DIR}/main/"
+	rsync -avzh "${BINARIES_DIR}/retroarch/" "${BINARIES_DIR}/main/.retroarch/"
 	## Generate list of cores to be used
 	CORES_DIR="${BINARIES_DIR}/retroarch/cores"
 	for file in $CORES_DIR/*; do
@@ -47,4 +47,9 @@ fi
 # Write CFW version to splash image
 convert board/miyoo/miyoo-boot.png -pointsize 12 -fill white -annotate +10+230 "v${CFW_RELEASE} ${CFW_VERSION} (${LIBC}) ${STATUS}" -alpha off -type truecolor -strip -define bmp:format=bmp4 -define bmp:subtype=RGB565 "${BINARIES_DIR}"/boot/miyoo-boot.bmp
 
+# Generate MAIN BTRFS partition
+image="${BINARIES_DIR}/main.img"
+label="MAIN"
+sudo mkfs.btrfs -r "${BINARIES_DIR}/main/" --shrink -v -f -L ${label} ${image}
+
 support/scripts/genimage.sh ${1} -c board/miyoo/genimage-sdcard.cfg

configs/miyoo_musl_defconfig

@@ -56,6 +56,7 @@ BR2_PACKAGE_BINUTILS=y
 BR2_PACKAGE_BINUTILS_TARGET=y
 BR2_PACKAGE_GETTEXT=y
 BR2_PACKAGE_LIBTOOL=y
+BR2_PACKAGE_BTRFS_PROGS=y
 BR2_PACKAGE_DOSFSTOOLS=y
 BR2_PACKAGE_DOSFSTOOLS_FATLABEL=y
 BR2_PACKAGE_DOSFSTOOLS_FSCK_FAT=y
@@ -228,10 +229,11 @@ BR2_PACKAGE_OPKG=y
 BR2_PACKAGE_OPKG_UTILS=y
 BR2_PACKAGE_DIALOG=y
 BR2_PACKAGE_UTIL_LINUX_LIBMOUNT=y
+BR2_PACKAGE_UTIL_LINUX_PARTX=y
 BR2_PACKAGE_NANO=y
-BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_BTRFS=y
-BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_BTRFS_LABEL="rootfs"
-BR2_TARGET_ROOTFS_EXT2_SIZE="256M"
+BR2_TARGET_ROOTFS_BTRFS_SIZE="256M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
@@ -243,6 +245,7 @@ BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_SPL=y
 BR2_TARGET_UBOOT_SPL_NAME="u-boot-sunxi-with-spl.bin"
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_E2FSPROGS=y
 BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y
 BR2_PACKAGE_HOST_UBOOT_TOOLS=y

configs/miyoo_uclibc_defconfig

@@ -55,6 +55,7 @@ BR2_PACKAGE_LTRACE=y
 BR2_PACKAGE_STRACE=y
 BR2_PACKAGE_GETTEXT=y
 BR2_PACKAGE_LIBTOOL=y
+BR2_PACKAGE_BTRFS_PROGS=y
 BR2_PACKAGE_DOSFSTOOLS=y
 BR2_PACKAGE_DOSFSTOOLS_FATLABEL=y
 BR2_PACKAGE_DOSFSTOOLS_FSCK_FAT=y
@@ -205,10 +206,11 @@ BR2_PACKAGE_OPKG=y
 BR2_PACKAGE_OPKG_UTILS=y
 BR2_PACKAGE_DIALOG=y
 BR2_PACKAGE_UTIL_LINUX_LIBMOUNT=y
+BR2_PACKAGE_UTIL_LINUX_PARTX=y
 BR2_PACKAGE_NANO=y
-BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_BTRFS=y
-BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_BTRFS_LABEL="rootfs"
-BR2_TARGET_ROOTFS_EXT2_SIZE="256M"
+BR2_TARGET_ROOTFS_BTRFS_SIZE="256M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
@@ -220,6 +222,7 @@ BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_SPL=y
 BR2_TARGET_UBOOT_SPL_NAME="u-boot-sunxi-with-spl.bin"
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_E2FSPROGS=y
 BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y
 BR2_PACKAGE_HOST_UBOOT_TOOLS=y