[PATCH v2 00/19] state: allow lookup of barebox state partition by Type GUID

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

So far, we had basically three ways to reference barebox,state on block
devices:

  - On platforms with device tree, we point at a fixed partition
    described in the DT

  - On platforms without device tree, we have a custom binding that
    does a global lookup by partuuid (or a more obscure one by diskuuid).

Both are less than optimal. The first clashes with the need to use
a GPT partition for the state and the second doesn't allow relating the
UUID with an actual device for the case where e.g. both an SD-Card and
an eMMC are flashed with the same image.

This series fixes that by:

  - Supporting definition of fixed partitions that are identical to
    GPT/MBR partitions.

  - Alternatively, support pointing barebox-state backend at a
    GPT-partitioned device and the partition with the barebox-state
    Type GUID will be taken.

Changelog written in each patch

Ahmad Fatoum (19):
  common: partitions: decouple from EFI GUID definition
  efi: define efi_guid_t as 32-bit aligned guid_t
  cdev: fix for_each_cdev macro
  of: partition: support of_partition_ensure_probed on parent device
  state: fix deep probe handling
  of: of_path: always call of_partition_ensure_probed before resolving
  driver: add new cdev_is_partition helper
  commands: stat: remove code duplication for type info
  cdev: use more descriptive struct cdev::diskuuid/partuuid
  cdev: record whether partition is parsed from OF
  cdev: have devfs_add_partition return existing identical partition,
    not NULL
  block: parse partition table on block device registration
  common: partitions: record whether disk is GPT or MBR partitioned
  block: add cdev_is_block_(device|partition|disk) helpers
  of: export new of_cdev_find helper
  state: factor device path lookup into helper function
  cdev: use cdev::dos_partition_type only if cdev_is_mbr_partitioned
  common: partitions: efi: record type UUID in cdev
  state: allow lookup of barebox state partition by Type GUID

 arch/sandbox/board/hostfile.c  |  4 --
 common/block.c                 |  4 ++
 common/blspec.c                |  2 +-
 common/bootm.c                 |  2 +-
 common/partitions.c            |  4 +-
 common/partitions/dos.c        |  4 +-
 common/partitions/efi.c        | 11 ++++--
 common/partitions/parser.h     |  6 ++-
 common/state/state.c           | 50 ++++++++++++++++++------
 drivers/ata/disk_ata_drive.c   |  5 ---
 drivers/base/driver.c          |  2 +-
 drivers/block/efi-block-io.c   |  9 +----
 drivers/block/virtio_blk.c     |  8 +---
 drivers/mci/mci-core.c         |  6 ---
 drivers/misc/storage-by-uuid.c |  4 +-
 drivers/nvme/host/core.c       |  5 ---
 drivers/of/of_path.c           | 69 ++++++++++++++++++++++++----------
 drivers/of/partition.c         | 46 ++++++++++++++++++++---
 drivers/of/platform.c          |  2 +-
 drivers/usb/storage/usb.c      |  5 ---
 fs/devfs-core.c                | 67 +++++++++++++++++++++++++--------
 fs/fs.c                        | 33 +++++++++++-----
 include/block.h                | 15 ++++++++
 include/driver.h               | 60 ++++++++++++++++++++++++++---
 include/efi.h                  | 19 ++++++++--
 include/efi/partition.h        | 27 ++++++-------
 include/of.h                   |  1 +
 include/state.h                |  4 ++
 lib/Makefile                   |  1 +
 lib/uuid.c                     | 15 ++++++++
 30 files changed, 351 insertions(+), 139 deletions(-)
 create mode 100644 lib/uuid.c

-- 
2.39.2