Re: [meta-raspberrypi] Booting a Raspberry Pi 4 using PXE

Manuel Wagesreither

Hello Anton,

Am Mi, 5. Mai 2021, um 15:34, schrieb Anton Antonov:
I don't know what exactly you mean by "whenever the Raspi is booting over the network".
When a machine boots from network (i,e. using DHCP/BOOTP) then usually DHCP server points to, for example, a TFTP server where the kernel and initramfs should be obtained from and kernel parameters. So, you need to check your DHCP/TFTP/etc servers configuration for kernel parameters.

The boot files (kernel, kernel parameters, device tree overlays, ...) served by TFTP are bit-identical to the ones present at `/boot` of the usb stick.

When I boot over PXE/BOOTP/DHCP/TFTP/etc, something seems to replace all occurences of `8250.nr_uarts=1` with `8250.nr_uarts=0`. When I boot using usb drive using the exact same files, this doesn't happen and uart is active.


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