[PATCH 00/18] boot: improve cdev alias and blspec support

Ahmad Fatoum a.fatoum at pengutronix.de
Sun Apr 13 23:31:34 PDT 2025


Building on past top of past bootscan and cdev alias infrastructure in
next, enable the following:

   - Favoring entries in GPT XBOOTLDR partition and EFI system
     partitions, like we already do for MBR XBOOTLDR partition

   - Allow state backend and other DT bindings to point at a
     barebox,bootsource node to allow same state DT description
     to work across different boot media

Ahmad Fatoum (18):
  cdev: make cdev_find_child_by_gpt_typeuuid external
  cdev: constify cdev_find_child_by_gpt_typeuuid's guid_t pointer
    argument
  partition: efi: respect DPS_TYPE_FLAG_NO_AUTO flag
  blspec: iterate over all XBOOTLDR partitions
  blspec: support GPT XBOOTLDR partition
  blspec: collect bootloader spec entries from ESP
  cdev: alias: add support for partition links
  cdev: do not dereference partname for non-partitions
  cdev: use common cdev_free helper internally
  cdev: implement devfs_create_link in terms of devfs_create
  misc: storage-by-uuid: consider only first diskuuid match
  misc: storage-by-uuid: prepare for generalizing to different aliases
  misc: storage-by-uuid: rename to storage-by-alias
  misc: storage-by-alias: switch over to using cdev aliases
  misc: storage-by-alias: add support barebox,bootsource
  misc: storage-by-alias: register as link to main cdev
  cdev: constify cdev_readlink argument
  cdev: follow links in cdev_find_child_by_gpt_typeuuid

 commands/boot.c                 |   1 +
 common/blspec.c                 |  75 +++++++---
 common/bootscan.c               |  11 +-
 common/cdev-alias.c             |  53 ++++---
 drivers/misc/Kconfig            |  21 ++-
 drivers/misc/Makefile           |   2 +-
 drivers/misc/storage-by-alias.c | 236 ++++++++++++++++++++++++++++++++
 drivers/misc/storage-by-uuid.c  | 202 ---------------------------
 fs/devfs-core.c                 | 104 ++++++++++----
 include/block.h                 |   1 +
 include/bootscan.h              |   5 +-
 include/driver.h                |  20 +--
 12 files changed, 440 insertions(+), 291 deletions(-)
 create mode 100644 drivers/misc/storage-by-alias.c
 delete mode 100644 drivers/misc/storage-by-uuid.c

-- 
2.39.5




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