Anyone here has any experience in accessing u-boot on Orange PI Zero 2W.
I installed dietPI for testing but the device will be in vibrating areas, so SD CARD will not survive.
So I am trying to force the OPI Zero 2W to boot fron tftp instead of the SD Card.
Any help will be extremelly appreciated.
PS: i already put an TTL/USB and connected to UART0 but the OPI never stops at uboot level ever. I have few with 2G and 4G
One more time - many thanks
So you cannot abort boot in U-Boot phase by hitting ctrl+c or similar via serial console?
Mainline U-Boot has some TFTP boot target, to try as fallback if everything else fails. But not sure in this particular case. But more importantly you need to flash U-Boot to the SPI storage. Let me check whether our bootloader build even ships with an SPI image. Or did you do/flash that already?
EDIT: Nope. I see it has a 16 MiB SPI flash, but our U-Boot build does not contain a dedicated image for it, and no function to flash to it. Is there an SPI/MTD device visible, i.e. does the kernel at least support/provide access to it?
cat /proc/mtd
ls -l /dev/mtd*