I'm currently trying to build my own custom Linux OS for my Raspberry Pi 3 and am experiencing some trouble.
I'm using buildroot v2018_2.
I configured the system using
Then just changed the following options :
- C library : use
- Increased filesystem size from 60M to 100M
- Add password
rootto root user under
[*] Enable root login with password
After compiling, flashing the generated
sdcard.img and booting, I can see kernel logs on the HDMI connected screen.
However after booting, the OS doesn't propose any prompt on the HDMI screen and I'm stuck here.
I know that the system is not freezed because I can see kernel logs if I plug/unplug my keyboard.
I suppose that the console is connected to the UART and only kernel logs are sent to HDMI port.
However I can't find how to force console prompt on HDMI.
Here are my config.txt and cmdline :
$ cat config.txt # Please note that this is only a sample, we recommend you to change it to fit # your needs. # You should override this file using a post-build script. # See http://buildroot.org/manual.html#rootfs-custom # and http://elinux.org/RPiconfig for a description of config.txt syntax kernel=zImage # To use an external initramfs file #initramfs rootfs.cpio.gz # Disable overscan assuming the display supports displaying the full resolution # If the text shown on the screen disappears off the edge, comment this out disable_overscan=1 # How much memory in MB to assign to the GPU on Pi models having # 256, 512 or 1024 MB total memory gpu_mem_256=100 gpu_mem_512=100 gpu_mem_1024=100 # fixes rpi3 ttyAMA0 serial console dtoverlay=pi3-miniuart-bt
$ cat cmdline root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyAMA0,115200
I didn't change any configuration in kernel and I'm using the one from raspberry-pi github repository.
Does someone know how I could get a prompt on the HDMI screen ?