[PATCH v3 0/9] efi_loader: improve device-tree loading
Simon Glass
sjg at chromium.org
Mon Jun 10 15:53:02 CEST 2024
Hi Heinrich,
On Mon, 10 Jun 2024 at 03:11, Heinrich Schuchardt
<heinrich.schuchardt at 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?
Regards,
Simon
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