blob: 92398aa9a35aa23ab1532442de13e09a0d869f7c [file] [log] [blame]
// Copyright 2022 The Fuchsia Authors
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
#include <stdio.h>
#include <zircon/assert.h>
#include <phys/efi/main.h>
#include <phys/efi/protocol.h>
fitx::result<efi_status, efi_handle> EfiOpenProtocol(efi_handle handle, const efi_guid& guid) {
void* ptr = nullptr;
efi_status status = gEfiSystemTable->BootServices->OpenProtocol(
handle, &guid, &ptr, gEfiImageHandle, nullptr, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
if (status != EFI_SUCCESS) {
return fitx::error{status};
return fitx::ok(ptr);
void EfiCloseProtocol(const efi_guid& guid, efi_handle protocol) {
efi_status status =
gEfiSystemTable->BootServices->CloseProtocol(protocol, &guid, gEfiImageHandle, nullptr);
// TODO(mcgrathr): Getting EFI_INVALID_PARAMETER here, can't tell why.
// For now, just leaking the references seems harmless enough.
status = EFI_SUCCESS;
ZX_ASSERT_MSG(status == EFI_SUCCESS, "CloseProtocol(%p, <guid> %p, %p, NULL) -> %#zx\n", protocol,
&guid, gEfiImageHandle, status);