--- /dev/null
+++ b/configs/mt7622_linksys_e8450_defconfig
-@@ -0,0 +1,141 @@
+@@ -0,0 +1,140 @@
+CONFIG_ARM=y
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_ARCH_MEDIATEK=y
+CONFIG_DEBUG_UART_CLOCK=25000000
+CONFIG_DEFAULT_DEVICE_TREE="mt7622-linksys-e8450-ubi"
+CONFIG_DEBUG_UART=y
-+CONFIG_MTDPARTS_DEFAULT="mtdparts=spi-nand0:512k(bl2),1280k(fip),1024k(factory),256k(reserved),-(ubi)"
+CONFIG_SMBIOS_PRODUCT_NAME=""
+CONFIG_AUTOBOOT_KEYED=y
+CONFIG_BOOTDELAY=30
+CONFIG_USB_STORAGE=y
--- /dev/null
+++ b/arch/arm/dts/mt7622-linksys-e8450-ubi.dts
-@@ -0,0 +1,197 @@
+@@ -0,0 +1,214 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+ pinctrl-0 = <&snfi_pins>;
+ status = "okay";
+ quad-spi;
++
++ partitions {
++ compatible = "fixed-partitions";
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ partition@0 {
++ label = "bl2";
++ reg = <0x0 0x80000>;
++ };
++
++ partition@80000 {
++ label = "ubi";
++ reg = <0x80000 0x7f80000>;
++ compatible = "linux,ubi";
++ };
++ };
+};
+
+&uart0 {
mt7981-rfb.dtb \
--- /dev/null
+++ b/linksys_e8450_env
-@@ -0,0 +1,57 @@
-+ethaddr_factory=mtd read spi-nand0 0x40080000 0x220000 0x20000 && env readmem -b ethaddr 0x4009fff4 0x6 ; setenv ethaddr_factory
+@@ -0,0 +1,54 @@
++ethaddr_factory=ubi read 0x40080000 factory && env readmem -b ethaddr 0x400ffff4 0x6 ; setenv ethaddr_factory
+ipaddr=192.168.1.1
+serverip=192.168.1.254
+loadaddr=0x48000000
+boot_default=if env exists flag_recover ; then else run bootcmd ; fi ; run boot_recovery ; setenv replacevol 1 ; run boot_tftp_forever
+boot_production=led $bootled_pwr on ; run ubi_read_production && bootm $loadaddr#$bootconf ; led $bootled_pwr off
+boot_recovery=led $bootled_rec on ; run ubi_read_recovery ; bootm $loadaddr#$bootconf ; ubi remove recovery ; led $bootled_rec off
-+boot_serial_write_bl2=loadx $loadaddr 115200 && run boot_write_bl2
-+boot_serial_write_fip=loadx $loadaddr 115200 && run boot_write_fip
++boot_serial_write_bl2=loadx $loadaddr 115200 && run snand_write_bl2
++boot_serial_write_fip=loadx $loadaddr 115200 && run ubi_write_fip
+boot_tftp=tftpboot $loadaddr $bootfile && bootm $loadaddr#$bootconf
+boot_tftp_forever=led $bootled_rec on ; while true ; do run boot_tftp_recovery ; sleep 1 ; done
+boot_tftp_production=tftpboot $loadaddr $bootfile_upg && iminfo $loadaddr && ubi part ubi && run ubi_write_production ubi_prepare_rootfs ; if env exists noboot ; then else bootm $loadaddr#$bootconf ; fi
+boot_tftp_recovery=tftpboot $loadaddr $bootfile && iminfo $loadaddr && ubi part ubi && run ubi_write_recovery ; if env exists noboot ; then else bootm $loadaddr#$bootconf ; fi
-+boot_tftp_write_bl2=tftpboot $loadaddr $bootfile_bl2 && run boot_write_bl2
-+boot_tftp_write_fip=tftpboot $loadaddr $bootfile_fip && run boot_write_fip
++boot_tftp_write_bl2=tftpboot $loadaddr $bootfile_bl2 && run snand_write_bl2
++boot_tftp_write_fip=tftpboot $loadaddr $bootfile_fip && run ubi_write_fip
+boot_ubi=ubi part ubi && run boot_production ; run boot_recovery
-+boot_write_bl2=mtd erase bl2 && mtd write spi-nand0 $loadaddr 0x0 0x20000 && mtd write spi-nand0 $loadaddr 0x20000 0x20000 && mtd write spi-nand0 $loadaddr 0x40000 0x20000 && mtd write spi-nand0 $loadaddr 0x60000 0x20000
-+boot_write_fip=mtd erase fip && mtd write fip $loadaddr
-+check_ubi=ubi part ubi || run ubi_format
-+reset_factory=mw $loadaddr 0x0 0x100000 ; ubi part ubi ; ubi write $loadaddr ubootenv 0x100000 ; ubi write $loadaddr ubootenv2 0x100000 ; ubi remove rootfs_data
-+ubi_format=ubi detach ; mtd erase ubi && ubi part ubi ; reset
++snand_write_bl2=mtd erase bl2 && mtd write spi-nand0 $loadaddr 0x0 0x20000 && mtd write spi-nand0 $loadaddr 0x20000 0x20000 && mtd write spi-nand0 $loadaddr 0x40000 0x20000 && mtd write spi-nand0 $loadaddr 0x60000 0x20000
++reset_factory=mw $loadaddr 0xff 0x1f000 ; ubi part ubi ; ubi write $loadaddr ubootenv 0x1f000 ; ubi write $loadaddr ubootenv2 0x1f000 ; ubi remove rootfs_data
+ubi_prepare_rootfs=if ubi check rootfs_data ; then else if env exists rootfs_data_max ; then ubi create rootfs_data $rootfs_data_max dynamic || ubi create rootfs_data - dynamic ; else ubi create rootfs_data - dynamic ; fi ; fi
+ubi_read_production=ubi read $loadaddr fit && iminfo $loadaddr && run ubi_prepare_rootfs
+ubi_read_recovery=ubi check recovery && ubi read $loadaddr recovery
+ubi_remove_rootfs=ubi check rootfs_data && ubi remove rootfs_data
++ubi_write_fip=ubi check fip || ubi create fip 0x200000 static ; ubi write $loadaddr fip 0x200000
+ubi_write_production=ubi check fit && env exists replacevol && ubi remove fit ; if ubi check fit ; then else run ubi_remove_rootfs ; ubi create fit $filesize dynamic && ubi write $loadaddr fit $filesize ; fi
+ubi_write_recovery=ubi check recovery && env exists replacevol && ubi remove recovery ; if ubi check recovery ; then else run ubi_remove_rootfs ; ubi create recovery $filesize dynamic && ubi write $loadaddr recovery $filesize ; fi
-+_create_env=ubi create ubootenv 0x100000 dynamic ; ubi create ubootenv2 0x100000 dynamic
++_create_env=ubi create ubootenv 0x1f000 dynamic ; ubi create ubootenv2 0x1f000 dynamic
+_init_env=setenv _init_env ; if ubi check ubootenv && ubi check ubootenv2 ; then else run _create_env ; fi ; setenv _create_env ; saveenv || run ubi_format ; saveenv || run ubi_format
-+_firstboot=setenv _firstboot ; run _switch_to_menu ; run ethaddr_factory ; run check_ubi ; run _init_env ; run boot_first
++_firstboot=setenv _firstboot ; run _switch_to_menu ; run ethaddr_factory ; run _init_env ; run boot_first
+_switch_to_menu=setenv _switch_to_menu ; setenv bootdelay 3 ; setenv bootmenu_delay 3 ; setenv bootmenu_0 $bootmenu_0d ; setenv bootmenu_0d ; run _bootmenu_update_title
+_bootmenu_update_title=setenv _bootmenu_update_title ; setenv bootmenu_title "$bootmenu_title \e[33m$ver\e[0m"