boot

• BL2/FIP

• MTD

• uboot

• ubi

• Breed

BL2/FIP

https://trustedfirmware-a.readthedocs.io/en/latest/design/firmware-design.html

• Boot Loader stage 1 (BL1) AP Trusted ROM

• Boot Loader stage 2 (BL2) Trusted Boot Firmware

• Firmware Image Package

MTD

calc HEX -> DEC ： 00400000 = 4MiB 06f00000 = 111MiB

cat /proc/mtd
fw_printenv | grep mtdparts

mtd write .bin FIP # kmod-mtd-rw
dd if=/tmp/uboot.bin of=/mtd4

uboot

https://openwrt.org/docs/techref/bootloader/uboot.config

ubi

ubinfo -a

Breed

breed -> openwrt initramfs -> /cgi-bin/luci/admin/system/flashops/sysupgrade