u-boot.git/lib/efi_loader/efi_helper.c, branch master

efi: Rename END to EFI_DP_END

2025-05-25T09:27:18+00:00

This exported symbol has a very generic name. Rename it to indicate that
it relates to EFI and device-paths.

Fix checkpatch warnings related to use of multiple assignments.

Signed-off-by: Simon Glass 
Suggested-by: Heinrich Schuchardt 
Signed-off-by: Heinrich Schuchardt

efi_loader: Separate device path into its own header

2025-05-25T09:27:18+00:00

These functions are useful for the EFI app. As a first step towards
making these available outside lib/efi_loader, create a separate header
file and include it where needed. Add proper comments to the functions,
since many are missing at present.

Signed-off-by: Simon Glass 
Reviewed-by: Heinrich Schuchardt

efi_loader: bootbin: do not load an initrd if none is provided

2025-05-01T07:19:24+00:00

Do not try to create an initrd device path nor try to register
an initrd with the EFI_LOAD_FILE2_PROTOCOL if none is provided.

Handle initrd installation in efi_binary_run_dp with
efi_install_initrd, imitating what is done for the fdt.

Fixes: 36835a9105c ("efi_loader: binary_run: register an initrd")
Reported-by: Weizhao Ouyang 
Signed-off-by: Adriano Cordova 
Tested-by: Weizhao Ouyang 
Reviewed-by: Ilias Apalodimas 
Reviewed-by: Heinrich Schuchardt

efi: Make FDT extra space configurable

2025-04-11T11:20:37+00:00

U-Boot currently reserves only 0x3000 bytes when copying the FDT
in copy_fdt(), which may not be sufficient if additional nodes
(such as FMAN firmware) are added later.

This patch uses the exisitng SYS_FDT_PAD to reserve space for FDT fixup
instead of hardcoded value.

This change prevents potential corruption when resizing FDT after
EFI boot, especially when firmware like FMAN requires additional
space.

Signed-off-by: Gabriel Nesteruk 
Signed-off-by: Pawel Kochanowski 
Reviewed-by: Heinrich Schuchardt

blkmap: pass information on ISO image to the OS

2025-03-26T11:28:08+00:00

The EFI HTTP boot puts the ISO installer image at some location in
memory. Information about this image has to be passed on to the OS
kernel, which is done by adding a persistent memory(pmem) node to the
devicetree(DT) that is passed to the OS. The OS kernel then gets
information about the presence of this ISO image and proceeds with the
installation.

In U-Boot, this ISO image gets mounted as a memory mapped blkmap
device slice, with the 'preserve' attribute. Add a helper function
which iterates through all such slices, and invokes a callback. The
callback adds the pmem node to the DT and removes the corresponding
memory region from the EFI memory map. Invoke this helper function as
part of the DT fixup which happens before booting the OS.

Signed-off-by: Sughosh Ganu 
Reviewed-by: Tobias Waldekranz 
Signed-off-by: Ilias Apalodimas

efi_loader: install device-tree on configuration table on every invocation

2025-03-26T11:28:08+00:00

The efi_install_fdt() function is called before booting an EFI binary,
either directly, or through a bootmanager. This function installs a
copy of the device-tree(DT) on the EFI configuration table, which is
passed on to the OS.

The current logic in this function does not install a DT if a
device-tree is already installed as an EFI configuration
table. However, this existing copy of the DT might not be up-to-date,
or it could be a wrong DT for the image that is being booted. Always
install a DT afresh to the configuration table before booting the EFI
binary.

Installing a new DT also involves some additional checks that are
needed to clean up memory associated with the existing DT copy. Check
for an existing copy, and free up that memory.

Signed-off-by: Sughosh Ganu 
Signed-off-by: Ilias Apalodimas

efi_loader: remove unused code from copy_fdt()

2025-03-26T11:28:08+00:00

There is logic in the copy_fdt() function which is iterating over the
platform's DRAM banks and setting the fdt_ram_start variable. However,
this variable is not used subsequently in the function. Remove this
superfluous code.

Signed-off-by: Sughosh Ganu 
Reviewed-by: Ilias Apalodimas 
Reviewed-by: Heinrich Schuchardt 
Signed-off-by: Ilias Apalodimas

efi_loader: use LOGC_EFI consistently

2025-01-26T10:06:56+00:00

The log category should be LOGC_EFI all over the EFI sub-system.

Signed-off-by: Heinrich Schuchardt 
Reviewed-by: Ilias Apalodimas

efi_loader: Drop sandbox PXE architecture

2024-11-09T09:01:47+00:00

Rather than returning 0, just return an error, since sandbox is not used
with PXE at present.

Signed-off-by: Simon Glass

sandbox: Report host default-filename in native mode

2024-11-09T09:01:47+00:00

When the --native flag is given, pretend to be running the host
architecture rather than sandbox.

Allow the same control for PXE too.

Signed-off-by: Simon Glass