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| author | Lennart Poettering <lennart@poettering.net> | 2018-10-22 16:51:46 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2018-11-16 15:47:18 +0100 |
| commit | 5dd5f7cfa878a329fce5672a244ab190bfc8fcd9 (patch) | |
| tree | 7e358f6b8d4c939642dbad97bebf96269f0d37df /src/boot/efi/boot.c | |
| parent | 95a18e91db59028cf5e1848834fa754a8dab5b23 (diff) | |
| download | systemd-5dd5f7cfa878a329fce5672a244ab190bfc8fcd9.tar.gz | |
sd-boot: add new EFI variable exposing feature set of boot loader
We keep adding new features, let's advertise to the host OS what these
are in a new variable LoaderFeatures.
It works a bit like OsIndicationsSupported, but is about Loader
features.
Diffstat (limited to 'src/boot/efi/boot.c')
| -rw-r--r-- | src/boot/efi/boot.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/boot/efi/boot.c b/src/boot/efi/boot.c index b2fa8f1e2a..909cf914a6 100644 --- a/src/boot/efi/boot.c +++ b/src/boot/efi/boot.c @@ -2072,6 +2072,14 @@ static VOID config_write_entries_to_variable(Config *config) { } EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) { + static const UINT64 loader_features = + (1ULL << 0) | /* I honour the LoaderConfigTimeout variable */ + (1ULL << 1) | /* I honour the LoaderConfigTimeoutOneShot variable */ + (1ULL << 2) | /* I honour the LoaderEntryDefault variable */ + (1ULL << 3) | /* I honour the LoaderEntryOneShot variable */ + (1ULL << 4) | /* I support boot counting */ + 0; + _cleanup_freepool_ CHAR16 *infostr = NULL, *typestr = NULL; CHAR8 *b; UINTN size; @@ -2095,6 +2103,8 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) { typestr = PoolPrint(L"UEFI %d.%02d", ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff); efivar_set(L"LoaderFirmwareType", typestr, FALSE); + (void) efivar_set_raw(&loader_guid, L"LoaderFeatures", &loader_features, sizeof(loader_features), FALSE); + err = uefi_call_wrapper(BS->OpenProtocol, 6, image, &LoadedImageProtocol, (VOID **)&loaded_image, image, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); if (EFI_ERROR(err)) { |