u-boot.git/include/efi_loader.h, branch v2020.04

efi_loader: definition of GetNextVariableName()

2020-03-22T17:38:02+00:00

'vendor' is both an input and an output parameter. So it cannot be
constant.

Fixes: 0bda81bfdc5c ("efi_loader: use const efi_guid_t * for variable services")
Signed-off-by: Heinrich Schuchardt

efi_loader: export a couple of protocol related functions

2020-03-17T07:29:52+00:00

This is a preparatory patch.
Those functions will be used in an implementation of UEFI firmware
management protocol as part of my capsule update patch.

Signed-off-by: AKASHI Takahiro

efi_loader: Implement FileLoad2 for initramfs loading

2020-02-28T18:37:14+00:00

Following kernel's proposal for an arch-agnostic initrd loading
mechanism [1] let's implement the U-boot counterpart.
This new approach has a number of advantages compared to what we did up
to now. The file is loaded into memory only when requested limiting the
area of TOCTOU attacks. Users will be allowed to place the initramfs
file on any u-boot accessible partition instead of just the ESP one.
Finally this is an attempt of a generic interface across architectures
in the linux kernel so it makes sense to support that.

The file location is intentionally only supported as a config option
argument(CONFIG_EFI_INITRD_FILESPEC), in an effort to enhance security.
Although U-boot is not responsible for verifying the integrity of the
initramfs, we can enhance the offered security by only accepting a
built-in option, which will be naturally verified by UEFI Secure Boot.
This can easily change in the future if needed and configure that via ENV
or UEFI variable.

[1] https://lore.kernel.org/linux-efi/20200207202637.GA3464906@rani.riverdale.lan/T/#m4a25eb33112fab7a22faa0fd65d4d663209af32f

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

efi_rng_protocol: Install the efi_rng_protocol on the root node

2020-01-07T17:08:22+00:00

Install the EFI_RNG_PROTOCOL implementation for it's subsequent use by
the kernel for features like kaslr.

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

efi_loader: Add guidcpy function

2020-01-07T17:08:20+00:00

Add guidcpy function to copy the source guid to the destination
guid. Use this function instead of memcpy for copying to the
destination guid.

Signed-off-by: Sughosh Ganu 

Use void * instead of efi_guid_t * for arguments to allow copying unaligned
GUIDs. The GUIDs of configuration tables are __packed.

Signed-off-by: Heinrich Schuchardt

efi_loader: export efi_install_fdt()

2020-01-07T17:08:20+00:00

Use a pointer to addressable memory instead of a "physical" address in the
virtual address space of the sandbox to efi_install_fdt().

Export the efi_install_fdt() function.

Signed-off-by: Heinrich Schuchardt

efi_loader: carve out efi_run_image()

2020-01-07T17:08:20+00:00

Provide public function efi_run_imager() which can be used to run an UEFI
image from memory.

Signed-off-by: Heinrich Schuchardt

efi_loader: pass address to efi_install_fdt()

2020-01-07T17:08:20+00:00

As part of moving the parsing of command line arguments to do_bootefi()
call efi_install_fdt() with the address of the device tree instead of a
string.

If the address is EFI_FDT_USE_INTERNAL (= 0), the internal device tree
is used.

Signed-off-by: Heinrich Schuchardt

efi_loader: remove unused function efi_dp_from_dev()

2019-11-19T11:10:22+00:00

Function efi_dp_from_dev() is not used anywhere. Remove it.

Signed-off-by: Heinrich Schuchardt

efi: Move inline functions to unconditional part of header

2019-10-08T05:54:12+00:00

At present these two functions are defined in efi_loader.h but only if
CONFIG_EFI_LOADER is enabled. But these are functions that are useful to
other code, such as that which deals with Intel Handoff Blocks (HOBs).

Move these to the top of the function.

Possibly ascii2unicode() should not be an inline function, since this
might impact code size.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng