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/*
* Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
*
* SPDX-License-Identifier: MIT
*/
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Protocol/SimpleClass.h>
EFI_STATUS
EFIAPI
UefiMain (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
UINTN HandleCount;
EFI_HANDLE* HandleBuffer;
UINTN Index;
SIMPLE_CLASS_PROTOCOL* SimpleClass;
EFI_STATUS Status = gBS->LocateHandleBuffer (
ByProtocol,
&gSimpleClassProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
if (EFI_ERROR (Status)) {
Print(L"Error! Can't find any handle with gSimpleClassProtocolGuid: %r\n", Status);
return Status;
}
for (Index = 0; Index < HandleCount; Index++) {
Print(L"Handle = %p\n", HandleBuffer[Index]);
Status = gBS->OpenProtocol(
HandleBuffer[Index],
&gSimpleClassProtocolGuid,
(VOID **)&SimpleClass,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (!EFI_ERROR(Status)) {
UINTN Number;
Status = SimpleClass->GetNumber(&Number);
if (!EFI_ERROR(Status)) {
Print(L"Number before=%d\n", Number);
} else {
Print(L"Error! Can't get number: %r\n", Status);
}
Status = SimpleClass->SetNumber(Number+5);
if (EFI_ERROR(Status))
Print(L"Error! Can't set number: %r\n", Status);
Status = SimpleClass->GetNumber(&Number);
if (!EFI_ERROR(Status)) {
Print(L"Number after=%d\n", Number);
} else {
Print(L"Error! Can't get number: %r\n", Status);
}
} else {
Print(L"Error! Can't open SimpleClass protocol: %r\n", Status);
}
}
return Status;
}
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