[fedora-arm] Re: Question: kernelopts on raspberry pi

On Wed, 9 Sep 2020, Steven A. Falco wrote:

> But that doesn't seem to have any effect. After booting, I still see:
>
> # cat /proc/cmdline
> BOOT_IMAGE=(hd1,msdos2)/vmlinuz-5.8.0-1.fc33.aarch64
> root=UUID=36a097ba-7577-4cc9-977e-df76c6590c48 ro
>
> Where does the kernel get its command line on RPi?

I have an rPi3 and Pinebook. Same place as Intel.

grubby --info=DEFAULT

shows default boot

grubby --info=ALL

to show all kernels

https://fedoramagazine.org/setting-kernel-command-line-arguments-with-fedora-30/

Here is Pinebook:

# grubby --info=DEFAULT
index=0
kernel="/boot/vmlinuz-5.8.6-201.fc32.aarch64"
args="ro"
root="/dev/mapper/pinevg-f32"
initrd="/boot/initramfs-5.8.6-201.fc32.aarch64.img"
title="Fedora (5.8.6-201.fc32.aarch64) 32 (Thirty Two)"
id="8814846c48db47e2bb50c252d4bc0a29-5.8.6-201.fc32.aarch64"

Note that root and args are defaulted to kernelopts in grubenv.

# grub2-editenv list
saved_entry=8814846c48db47e2bb50c252d4bc0a29-5.8.6-201.fc32.aarch64
kernelopts=root=/dev/mapper/pinevg-f32 ro
boot_success=1
boot_indeterminate=0
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