u-boot.git/lib/efi_loader/efi_runtime.c, branch v2019.10

efi_loader: do not call efi_runtime_detach twice

2019-08-15T18:33:10+00:00

Commit 7f95104d91cc ("efi_loader: detach runtime in ExitBootServices()")
added a call to efi_runtime_detach() to ExitBootServices() but did not
remove the call in SetVirtualAddressMap().

Remove the superfluous function call.

Correct a comment referring to efi_runtime_detach().

Fixes: 7f95104d91cc ("efi_loader: detach runtime in ExitBootServices()")
Signed-off-by: Heinrich Schuchardt

efi_loader: parameter check in SetVirtualAddressMap

2019-08-15T18:33:10+00:00

Check the parameters DescriptorSize and DescriptiorVersion of
SetVirtualAddressMap() as prescribed by the UEFI specification.

Signed-off-by: Heinrich Schuchardt

efi_loader: implement ConvertPointer()

2019-07-30T19:36:22+00:00

Implement the ConvertPointer() runtime service.

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

efi_loader: definition of efi_virtual_address_map()

2019-07-30T19:36:22+00:00

Use efi_uintn_t where the UEFI spec uses UINTN. Use efi_uintn_t also for
the result of the division of two efi_uintn_t.

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: EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE

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

Implement the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.

This requires allocating the event and the event list from runtime data.

Signed-off-by: Heinrich Schuchardt

efi_loader: efi_set_virtual_address_map_runtime()

2019-07-16T22:17:15+00:00

efi_set_virtual_address_map_runtime() must be of type __efi_runtime.

Fixes: ee8ebaaaaedc ("efi_loader: split off detaching SetVirtualAddress()")
Signed-off-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: simplify detaching

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

We do not need any array typed detach list. Let's simply update the
pointers directly.

Signed-off-by: Heinrich Schuchardt

efi_loader: decision on EFI_RT_SUPPORTED_RESET_SYSTEM

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

Move the logic determining which board supports reset at runtime to Kconfig.

Signed-off-by: Heinrich Schuchardt