On 10.06.24 15:53, Simon Glass wrote:
Hi Heinrich,
On Mon, 10 Jun 2024 at 03:11, Heinrich Schuchardt
<heinrich.schucha...@canonical.com> wrote:
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.
v3:
Add missing '@' in EFI_LP_DP_PART_FDT description.
Use calloc() instead of malloc() in load_fdt_from_load_option().
Add missing '@' in load_fdt_from_load_option function description
Rename struct efi_initrd_dp to efi_lo_dp_prefix.
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
Somewhat related, what work has been done to support FIT, or to locate
a DT using the compatible string?
CONFIG_BOOTM_EFI allows booting a FIT image containing an EFI binary and
optionally a device-tree. You can manually select a configuration when
invoking the bootm command. I am not aware of any automation for this
selection.
Best regards
Heinrich
