Re: RaspberryPI and upgrade from Bullseye to Bookworm

[basti]

Have a look at the file '/etc/default/raspi-firmware'.
/boot/firmware/cmdline.txt is auto-generated, so create a custom file 
with your values.


Am 13.11.26 um 15:50 schrieb Franco Martelli:
On 12/11/26 at 17:04, Franco Martelli wrote:
If 'raspi-firmware' is installed, it should be safe.

Check the file '/boot/firmware/cmdline.txt', it should contain the 
entry 'net.ifnames=0'.

I performed the upgrade and it was flawless. 🙂

Now I want to customize "/boot/firmware/cmdline.txt" and "/boot/ 
firmware/config.txt" it happens that after a kernel upgrade or after a 
"update-initramfs -u -k all" command I have those files rewritten with 
default values:

~# cat /boot/firmware/config.txt
# Switch the CPU from ARMv7 into ARMv8 (aarch64) mode
arm_control=0x200

enable_uart=1
upstream_kernel=1

kernel=vmlinuz-6.1.0-54-arm64
# For details on the initramfs directive, see
# https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=10532
initramfs initrd.img-6.1.0-54-arm64
..................................................

~# cat /boot/firmware/cmdline.txt
console=tty0 console=ttyS1,115200 root=/dev/mmcblk0p2 rw 
elevator=deadline fsck.repair=yes net.ifnames=0 cma=64M rootwait
..................................................

In "/boot/firmware/config.txt" I want to add:
...
gpu_mem=16
dtparam=audio=off
dtoverlay=disable-bt
hdmi_blanking=2
enable_uart=1
...

while in "/boot/firmware/cmdline.txt" I want to remove 
"elevator=deadline" because deprecated (see below), set "cma=0" and add 
"ipv6.disable=1".

~# dmesg|grep "elevator="
[    0.000000] Kernel command line: 
video=Composite-1:720x480@60i,margin_left=32,margin_right=32,margin_top=32,margin_bottom=32 dma.dmachans=0x7ff5 bcm2709.boardrev=0xa02082 bcm2709.serial=0x12345678 bcm2709.uart_clock=48000000 smsc95xx.macaddr=12:34:56:78:90:ab vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=tty0 console=ttyS1,115200 root=/dev/mmcblk0p2 rw elevator=deadline fsck.repair=yes net.ifnames=0 cma=64M rootwait
[    0.000000] Kernel parameter elevator= does not have any effect anymore

I'm not able to make permanent the changes. Does anybody have 
experiences about customizing those two files? How to proceed?

Thanks in advance, kind regards,