[PATCH v2 0/8] efi_loader: improve device-tree loading

Heinrich Schuchardt heinrich.schuchardt at canonical.com
Tue May 28 16:42:44 CEST 2024


In U-Boot EFI boot options can already specify both an EFI binary and
an initrd. With this series we can additionally define the matching
device-tree to be loaded in the boot option.

With the last patch the boot manager will fall back the device-tree
specified by $fdtfile in directories '/dtb/', '/', or '/dtb/current/'
on the boot device if no device-tree is specified in the boot
option or via a bootefi command parameter.

v2:
	Update efi_dp_concat() instead of new function efi_dp_merge().
	Carve out a function efi_load_option_dp_join() which we can
	use both for the eficonfig and the efidebug command.
	Rename variables id_dp, final_dp_size.
	Rename create_initrd_dp() to create_lo_dp_part().
	Use enum as parameter for create_lo_dp_part().
	Put all related changes into one patch.

Heinrich Schuchardt (8):
  efi_loader: allow concatenation with contained end node
  cmd: eficonfig: add support for setting fdt
  cmd: efidebug: add support for setting fdt
  efi_loader: load device-tree specified in boot option
  efi_loader: move distro_efi_get_fdt_name()
  efi_loader: return binary from efi_dp_from_lo()
  efi_loader: export efi_load_image_from_path
  efi_loader: load distro dtb in bootmgr

 boot/bootmeth_efi.c                        |  60 +---------
 cmd/eficonfig.c                            |  83 +++++++++----
 cmd/efidebug.c                             | 130 +++++++++++++++------
 include/efi_loader.h                       |  24 +++-
 lib/efi_loader/Makefile                    |   1 +
 lib/efi_loader/efi_bootbin.c               |   2 +-
 lib/efi_loader/efi_bootmgr.c               |  75 +++++++++++-
 lib/efi_loader/efi_boottime.c              |   3 +-
 lib/efi_loader/efi_device_path.c           |  40 ++++---
 lib/efi_loader/efi_device_path_utilities.c |   2 +-
 lib/efi_loader/efi_fdt.c                   | 117 +++++++++++++++++++
 lib/efi_loader/efi_helper.c                |  44 +++++++
 12 files changed, 445 insertions(+), 136 deletions(-)
 create mode 100644 lib/efi_loader/efi_fdt.c

-- 
2.43.0



More information about the U-Boot mailing list