UART is broken on platform/raspberry_pi/rpi0w

[sycamoremoon]

enviroment: make: 4.3, OS:ubuntu 22.04

Following the wiki about run embox on raspi, I'm try to run embox on my raspberry pi 0W. All things are the same except the make confload-platform/raspberry_pi/rpi0w and my SD card is mmcblk type rather than sda type.

After doing all step, I got nothing from the UART. Seems like this:

but when I connect the rpi0w to a screen. It flashed the fb_direct_access picture correctly about one or two seconds.

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I later tried other os as raspberry pi os for testing broad. It works ok with UART.

My /dev/modem is a soft link to /dev/ttyUSB0 and bound-rate sets correct.