Realtek文档介绍

Dual image logistic

＊ System will boot up from bank number store in uboot environment: sw_active.
＊ Firmware will always be written to bank which is not active.
＊ System will try to boot up from the upgrade bank, if boot success, it will be mark to
sw_actvie
＊ For pre-configuration supporting SPI-NAND, dual-image is default enable.

How to build

* Nor Flash

make menuconfig
make all
Note: You need to update uboot which build with dual image config

＊ For SPI-NAND flash, you can choice the following defconfigs

rtl8198f_spi-nand_rtl8367s_dual_image_defconfig,
rtl8198f_spi-nand_rtl83xx_dual_image_defconfig

Flash Layout

＊ Nor Flash

32MB flash, dual image/with dual env: