Cyril Brulebois 6251ebfbe0 Move the console= parameter for the serial console. ...

See https://salsa.debian.org/raspi-team/image-specs/-/issues/57 for
detailed background.

Summary, e.g. on the Pi 4:
 - fresh build and first boot means:
    console=ttyS1,115200 console=tty0
 - after dpkg-reconfigure raspi-firmware has run, with the default
   settings:
    console=tty0 console=ttyS1,115200

Having some consistency across boots seems desirable (esp. when the Pi
fails to boot and the hints are on a serial console which might not be
wired), so insert the console= parameter for the serial console right
before the root= parameter.

Currently, the /etc/kernel/postinst.d/z50-raspi-firmware hook uses:

    ${pre_cmdline} root=$ROOTPART […]

and console= parameters are inserted via ${pre_cmdline}, so inserting
the serial console before root= should get us the same results.

2021-10-21 16:59:14 +02:00

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