[PATCH v2 0/4] make the root= command line parameter variable

[Fabian Pflug <f.pflug@pengutronix.de>]

This is v2 of the patchset with the review feedback from Ahmad on the
first set worked in.

This patchset introduces the bootm.root_arg variable. A dynamic way of
setting the root argument in fit image boot contexts, defaulting to
root, resulting in root=/dev/... during kernel boot, but allowing for
overwrites like verity_fs=/dev/..., which can be parsed by the
initramfs, but will not be parsed by the kernel, resulting in robuster
secure boot contexts, where the kernel does not accidental due to
misconfiguration mount the rootfs instead of the initramfs, resulting in
a non-verified boot.

Fabian Pflug (4):
  block.h: renamed get_rootargs to get_root
  fs: split rootargs into root and options
  bootm: use new api to get kernel command line params
  bootm: introduce bootm.root_arg variable

 .../migration-guides/migration-master.rst     | 15 ++++++
 common/block.c                                | 38 +++++++++----
 common/bootm.c                                | 37 +++++++++----
 drivers/mci/mci-core.c                        |  4 +-
 fs/9p/vfs_super.c                             |  6 +--
 fs/fs.c                                       | 53 ++++++++-----------
 fs/nfs.c                                      |  4 +-
 fs/squashfs/squashfs.c                        | 13 +++--
 fs/ubifs/ubifs.c                              | 12 +++--
 include/block.h                               |  7 ++-
 include/bootargs.h                            | 11 ++++
 include/bootm.h                               |  1 +
 include/fs.h                                  |  7 +--
 13 files changed, 135 insertions(+), 73 deletions(-)
 create mode 100644 Documentation/migration-guides/migration-master.rst

-- 
2.47.3