mbox series

[Concept,00/14] bootstd: Infrastructure for multi-entry bootflow support

Message ID 20260322235719.1729267-1-sjg@u-boot.org
Headers
Series bootstd: Infrastructure for multi-entry bootflow support |

Message

Simon Glass March 22, 2026, 11:56 p.m. UTC 
  From: Simon Glass <sjg@chromium.org>

This series prepares the bootstd infrastructure for supporting multiple
bootflows from a single partition. Formats like extlinux can define
several labels in one configuration file, and BLS installations can have
multiple .conf files in loader/entries/

A follow-up series will add the actual multi-entry scanning.

In summary:

- Fix two iter->err inconsistencies in the bootflow scanning code that
  would prevent multi-entry iteration from working correctly

- Add a free_bootflow() method to bootmeth_ops so bootmeths can properly
  clean up bflow->bootmeth_priv. Fix memory leaks in the cros, android
  and rauc drivers

- Refactor the extlinux bootmeth to pass the PXE context explicitly and
  move it from platform data to a new private data struct

- Convert the single PXE context to an alist of contexts, indexed by a
  new bootmeth_id field on the bootflow. This allows multiple parsed
  configurations to coexist

- Add alist_add_placeholder() zeroing and suppress PXE parser warnings
  during non-interactive parsing


Simon Glass (14):
  mcheck: Increase registry size
  alist: Zero new entries in alist_add_placeholder()
  bootstd: Set iter->err before BOOTFLOWIF_ALL early return
  bootstd: Clear iter->err on successful bootflow check
  pxe: Allow the parser to suppress warning messages
  bootstd: Add free_bootflow() method for bootmeths
  cros: Implement free_bootflow to fix memory leak
  android: Implement free_bootflow to fix memory leak
  rauc: Implement free_bootflow to fix memory leak
  extlinux: Pass pxe_context to extlinux_boot() and extlinux_read_all()
  extlinux: Move pxe_context to new extlinux_priv struct
  extlinux: Add remove() to fix pxe_context leak
  bootstd: Add bootmeth_id to struct bootflow
  extlinux: Convert pxe_context to an alist with bootmeth_id lookup

 boot/bootflow.c                  | 11 ++++--
 boot/bootmeth-uclass.c           | 10 ++++++
 boot/bootmeth_android.c          |  9 +++++
 boot/bootmeth_cros.c             |  9 +++++
 boot/bootmeth_extlinux.c         | 51 ++++++++++++++++++++++++---
 boot/bootmeth_pxe.c              | 27 ++++++++++++---
 boot/bootmeth_rauc.c             | 13 ++++++-
 boot/ext_pxe_common.c            | 54 ++++++++++++++++++++---------
 boot/pxe_parse.c                 | 27 +++++++++------
 boot/pxe_utils.c                 |  1 +
 boot/vbe_abrec.h                 |  4 +++
 boot/vbe_abrec_os.c              | 13 ++++---
 common/mcheck_core.inc.h         |  2 +-
 doc/develop/bootstd/overview.rst | 12 ++++++-
 include/alist.h                  |  7 ++--
 include/bootflow.h               |  8 ++++-
 include/bootmeth.h               | 24 +++++++++++++
 include/extlinux.h               | 59 ++++++++++++++++++++++++++++----
 lib/alist.c                      |  8 ++++-
 test/boot/bootflow.c             |  2 ++
 test/lib/alist.c                 | 10 ++++++
 21 files changed, 299 insertions(+), 62 deletions(-)