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Bug#857054: initramfs-tools: Firmware for builtin kernel modules not included in initramfs

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  Bug#857054: initramfs-tools: Firmware for builtin kernel modules not included in initramfs Benjamin Drung <benjamin.drung@profitbricks.com> - 2017-03-07 16:20 +0100
    Bug#857054: initramfs-tools: Firmware for builtin kernel modules not included in initramfs Ben Hutchings <ben@decadent.org.uk> - 2017-03-07 16:40 +0100

#811708 — Bug#857054: initramfs-tools: Firmware for builtin kernel modules not included in initramfs

Package: initramfs-tools
Version: 0.120+deb8u3
Severity: normal

Hi,

I am using MODULES=netboot in combination with a custom kernel. This
kernel has its network driver bnx2x built in:

  $ grep BNX2X= /boot/config-$version
  CONFIG_BNX2X=y

The required firmware blobs are not included in the generated initramfs
even when specifying bnx2x in /etc/initramfs-tools/modules, because
manual_add_modules() from hook-functions does following:

  $ modprobe --all --ignore-install --quiet --show-depends bnx2x
  builtin bnx2x
  $ $ modinfo -k $version -F firmware bnx2x
  modinfo: ERROR: Module bnx2x not found.

I wrote a hook function as workaround:

  $ cat /etc/initramfs-tools/hooks/fix-missing-firmware
  #!/bin/sh

  PREREQ=""
  prereqs()
  {
      echo "$PREREQ"
  }
  case $1 in
  # get pre-requisites
  prereqs)
      prereqs
      exit 0
      ;;
  esac

  . /usr/share/initramfs-tools/hook-functions

  for file in /lib/firmware/bnx2x/*; do
      if test -e $file; then
          copy_exec $file
      fi
  done

-- 
Benjamin Drung
System Developer
Debian & Ubuntu Developer

ProfitBricks GmbH
Greifswalder Str. 207
D - 10405 Berlin

Email: benjamin.drung@profitbricks.com
URL:  http://www.profitbricks.com

Sitz der Gesellschaft: Berlin.
Registergericht: Amtsgericht Charlottenburg, HRB 125506B.
Geschäftsführer: Andreas Gauger, Achim Weiss.

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#811713

[Multipart message — attachments visible in raw view] — view raw

Control: clone -1 -2
Control: reassign -2 src:linux 4.9.13-1
Control: retitle -2 Kernel installation should include list of firmware for built-in drivers
Control: block -1 with -2
Control: found -1 0.120
Control: found -1 0.127

initramfs-tools will not keep its own lists of driver/firmware
dependencies; that is not maintainable.  This information has to be
carried by the drivers themselves.

In the case of built-in drivers, unfortunately, that information is
currently discarded at kernel build time.

Ben.

-- 
Ben Hutchings
Logic doesn't apply to the real world. - Marvin Minsky

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