diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-07-05 17:42:16 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-07-06 21:25:32 +0200 |
| commit | 7f95104d91ccfb26f802feb5300838b41bc5fbb1 (patch) | |
| tree | 20a820fb1e3a9b98aa134a74b8a84228c263ec60 /lib/efi_loader | |
| parent | b23ffcbe02dc7182d910ab081bd6d33a5b540777 (diff) | |
efi_loader: detach runtime in ExitBootServices()
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 <ard.biesheuvel@linaro.org>
Suggested-by: Alexander Graf <agraf@csgraf.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'lib/efi_loader')
| -rw-r--r-- | lib/efi_loader/efi_boottime.c | 3 | ||||
| -rw-r--r-- | lib/efi_loader/efi_runtime.c | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index ba4c1e5765..c2f89805c7 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1973,6 +1973,9 @@ static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle, board_quiesce_devices(); + /* Patch out unsupported runtime function */ + efi_runtime_detach(); + /* Fix up caches for EFI payloads if necessary */ efi_exit_caches(); diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c index dcbe824451..7a64dd42ca 100644 --- a/lib/efi_loader/efi_runtime.c +++ b/lib/efi_loader/efi_runtime.c @@ -398,7 +398,7 @@ static bool efi_is_runtime_service_pointer(void *p) /** * efi_runtime_detach() - detach unimplemented runtime functions */ -static __efi_runtime void efi_runtime_detach(void) +void efi_runtime_detach(void) { efi_runtime_services.reset_system = efi_reset_system; efi_runtime_services.get_time = efi_get_time; |