u-boot.git/include/efi_loader.h, branch v2019.10-rc2

efi_loader: avoid alignment error

2019-07-16T22:17:22+00:00

In packed structures GUIDs are not aligned. Avoid a build error with
GCC 9.1 by using const void * as argument for guidcmp().

Reported-by: Ramon Fried 
Signed-off-by: Heinrich Schuchardt

efi_loader: Change return type of efi_add_memory_map()

2019-07-16T22:17:17+00:00

We currently have some inconsistent use of efi_add_memory_map()
throughout the code. In particular the return value of efi_add_memory_map()
is not interpreted the same way by various users in the codebase.

This patch does the following:

- Changes efi_add_memory_map() to return efi_status_t.
- Adds a method description to efi_add_memory_map().
- Changes efi_add_memory_map() to return EFI_SUCCESS
- Returns non-zero for error in efi_add_memory_map()
- Updates efi_allocate_pages() to new efi_add_memory_map()
- Updates efi_free_pages() to new efi_add_memory_map()
- Updates efi_carve_out_dt_rsv() to new efi_add_memory_map()
- Updates efi_add_runtime_mmio()  to new efi_add_memory_map()

Fixes: 5d00995c361c ("efi_loader: Implement memory allocation and map")
Fixes: 74c16acce30b ("efi_loader: Don't allocate from memory holes")
Suggested-by: Heinrich Schuchardt 
Cc: Alexander Graf 
Signed-off-by: Bryan O'Donoghue 
Reviewed-by: Heinrich Schuchardt

efi_loader: detach runtime in ExitBootServices()

2019-07-06T19:25:32+00:00

Linux can be called with a command line parameter efi=novamap, cf.
commit 4e46c2a95621 ("efi/arm/arm64: Allow SetVirtualAddressMap() to be
omitted"). In this case SetVirtualAddressMap() is not called after
ExitBootServices().

OpenBSD 32bit does not call SetVirtualAddressMap() either.

Runtime services must be set to an implementation supported at runtime
in ExitBootServices().

Reported-by: Ard Biesheuvel 
Suggested-by: Alexander Graf 
Signed-off-by: Heinrich Schuchardt

efi_loader: let the variable driver patch out the runtime

2019-07-06T19:25:32+00:00

Our variable services are only provided at boottime. Therefore when
leaving boottime the variable function are replaced by dummy functions
returning EFI_UNSUPPORTED. Move this patching of the runtime table to the
variable services implementation. Executed it in ExitBootServices().

Signed-off-by: Heinrich Schuchardt

efi_loader: initialization of variable services

2019-07-06T19:25:32+00:00

Provide an initialization routine for variable services.

Signed-off-by: Heinrich Schuchardt

efi_loader: move efi_query_variable_info()

2019-07-06T19:25:32+00:00

Let's keep similar things together.

Move efi_query_variable_info() to lib/efi_loader/efi_variable.c

Signed-off-by: Heinrich Schuchardt

efi_loader: add RuntimeServicesSupported variable

2019-06-14T17:18:40+00:00

This variable is defined in UEFI specification 2.8, section 8.1.
Its value should be updated whenever we add any usable runtime services
function.

Currently we only support SetVirtualAddress() for all systems and
ResetSystem() for some.

Signed-off-by: AKASHI Takahiro 
Reviewed-by: Heinrich Schuchardt

efi_loader: implement event queue

2019-06-10T21:06:19+00:00

Up to now we have only been using a flag queued for events. But this does
not satisfy the requirements of the UEFI spec. Events must be notified in
the sequence of decreasing TPL level and within a TPL level in the sequence
of signaling.

Implement a queue for signaled events.

Signed-off-by: Heinrich Schuchardt

efi_loader: event signaling in ExitBootServices

2019-06-10T21:06:19+00:00

ExitBootServices() has to stop timer related activity before calling the
events of the EFI_EVENT_GROUP_EXIT_BOOT_SERVICES event group. But our
current implementation was stopping all other events.

All events have to observe the task priority level.

Signed-off-by: Heinrich Schuchardt

efi_loader: export efi_set_time()

2019-05-31T21:27:12+00:00

To let a board implement the runtime version of SetTime() we have to
provide the definition of the weak function in an include.

Signed-off-by: Heinrich Schuchardt