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products:sbc:vim4:development:boot-sequence
This is an old revision of the document!
VIM4 OS Boot Priority
VIM4 is capable of booting from the following devices: eMMC, TF Card, SPI Flash
We talking there only about 1st stage SOC boot, next second stage os loading possible for any other diveices like USB storages, NVME etc … and depends from u-boot
Default boot priority
- TF-Card TF-card will always take the highest priority.
- eMMC
- SPI-Flash
You can also swap the boot priority of the eMMC and SPI Flash via the KBI(Khadas Boot Instructions), but the TF Card will always take the highest priority.
- Setting the priority of
eMMCaboveSPI Flash
kvim4# kbi bootmode w emmc
Then the boot priority will become:
- TF Card
- eMMC
- SPI Flash
- Setting the priority of
SPI FlashaboveeMMC
kvim4# kbi bootmode w spi
Then the boot priority will become:
- TF Card
- SPI Flash
- eMMC
Last modified: 2022/07/26 02:35 by hyphop