SPI debug image still no serial output for U-boot?

#1

Hi,

I followed the instruction to flash the SPI flash, with the debug image, but I still can not get the U-boot prompt.

U-Boot SPL board init
U-Boot SPL 2017.09-g3caf61a44c2-220414 #stephen (Sep 29 2022 - 18:14:19)
Trying to boot from MMC2
spl: partition error
Trying fit image at 0x4000 sector
## Verified-boot: 0
## Checking atf-1 0x00040000 ... sha256(806278dba1...) + OK
...

Although it can still boot without any problem, I still want to access the U-boot prompt to do extra testing of the U-boot environment.

Is there any image to enable the U-boot cmdline interface?

#2

I think it is disabled explicitly by this commit? https://github.com/radxa/u-boot/commit/0f21198b68538fa98d90ae35b85d08527b5ecaa6

1 Like
#3

Indeed, but that makes no sense.

Let me check how to build the vendor Uboot without that config instead.

#4

it could be to speed up the boot process because of the pd timing problems

1 Like