80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2013 David Decotigny <decot@googlers.com>
|
||
|
|
*
|
||
|
|
* See drv0.c for an example session.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <efi.h>
|
||
|
|
#include <efilib.h>
|
||
|
|
#include "drv0.h"
|
||
|
|
|
||
|
|
|
||
|
|
static EFI_GUID GnuEfiAppsDrv0ProtocolGuid
|
||
|
|
= GNU_EFI_APPS_DRV0_PROTOCOL_GUID;
|
||
|
|
|
||
|
|
|
||
|
|
static
|
||
|
|
EFI_STATUS
|
||
|
|
PlayWithGnuEfiAppsDrv0Protocol(IN EFI_HANDLE DrvHandle) {
|
||
|
|
EFI_STATUS Status;
|
||
|
|
GNU_EFI_APPS_DRV0_PROTOCOL *drv = NULL;
|
||
|
|
UINTN NumberOfHello = 0;
|
||
|
|
|
||
|
|
Status = uefi_call_wrapper(BS->OpenProtocol, 6,
|
||
|
|
DrvHandle,
|
||
|
|
&GnuEfiAppsDrv0ProtocolGuid,
|
||
|
|
(void**)&drv,
|
||
|
|
DrvHandle,
|
||
|
|
NULL,
|
||
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
|
||
|
|
if (EFI_ERROR(Status)) {
|
||
|
|
Print(L"Cannot open proto: %d\n", Status);
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
Status = uefi_call_wrapper(drv->SayHello, 2, L"Sample UEFI Driver");
|
||
|
|
if (EFI_ERROR(Status)) {
|
||
|
|
Print(L"Cannot call SayHello: %d\n", Status);
|
||
|
|
}
|
||
|
|
|
||
|
|
Status = uefi_call_wrapper(drv->GetNumberOfHello, 2, &NumberOfHello);
|
||
|
|
if (EFI_ERROR(Status)) {
|
||
|
|
Print(L"Cannot call GetNumberOfHello: %d\n", Status);
|
||
|
|
} else {
|
||
|
|
Print(L"Hello was called %d time(s).\n", NumberOfHello);
|
||
|
|
}
|
||
|
|
|
||
|
|
return EFI_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
EFI_STATUS
|
||
|
|
efi_main (EFI_HANDLE Image, EFI_SYSTEM_TABLE *SysTab)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
EFI_HANDLE *Handles = NULL;
|
||
|
|
UINTN i, NoHandles = 0;
|
||
|
|
|
||
|
|
InitializeLib(Image, SysTab);
|
||
|
|
|
||
|
|
Status = LibLocateHandle(ByProtocol, &GnuEfiAppsDrv0ProtocolGuid,
|
||
|
|
NULL, &NoHandles, &Handles);
|
||
|
|
if (EFI_ERROR(Status)) {
|
||
|
|
Print(L"Error looking up handles for proto: %d\n", Status);
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0 ; i < NoHandles ; ++i)
|
||
|
|
{
|
||
|
|
Print(L"Playing with driver instance %d...\n", i);
|
||
|
|
Status = PlayWithGnuEfiAppsDrv0Protocol(Handles[i]);
|
||
|
|
if (EFI_ERROR(Status))
|
||
|
|
Print(L"Error playing with instance %d, skipping\n", i);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Handles)
|
||
|
|
FreePool(Handles);
|
||
|
|
|
||
|
|
return EFI_SUCCESS;
|
||
|
|
}
|