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1 #include<efi.h>
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2 #include<efilib.h>
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3
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4
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5 EFI_STATUS
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6 efi_main(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable)
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7 {
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8
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9 // UINTN UartBase = 0x09000000;
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10 // UINTN UartClk = 24000000;
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11 //CHAR8 buffer[256];
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12 //UINTN bufferSize;
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13
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14 EFI_DEVICE_PATH *Path;
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15 EFI_LOADED_IMAGE *LoadedImageParent;
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16 EFI_LOADED_IMAGE *LoadedImage;
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17 EFI_HANDLE Image;
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18 CHAR16 *Options = L"root=/dev/sda2 rootfstype=btrfs rw quiet splash";
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19 EFI_STATUS Status=EFI_SUCCESS;
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20
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21 InitializeLib(ImageHandle, SystemTable);
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22 Print(L"Hello, EFI!\n");
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23
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24 // Status = InitializeUart(UartBase, UartClk);
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25 // if (EFI_ERROR(Status)) {
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26 // Print(L"Error initializing UART device: %r\n", Status);
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27 // return Status;
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28 // }
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29 // Print(L"Hello, UART1!\n");
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30
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31 // Read kernel image from UART
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32 // bufferSize = sizeof(buffer);
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33 // Status = ReadUart(UartBase, &bufferSize, buffer);
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34 // if (EFI_ERROR(Status)) {
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35 // Print(L"Error reading kernel image from UART: %r\n", Status);
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36 // return Status;
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37 // }
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38
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39 // Print(L"Hello, UART2!\n");
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40
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41 // Status = uefi_call_wrapper(BS->OpenProtocol, 6, ImageHandle, &LoadedImageProtocol,(void**)&LoadedImageParent, ImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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42 // if (EFI_ERROR(Status)) {
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43 // Print(L"Could not get LoadedImageProtocol handler %r\n", Status);
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44 // return Status;
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45 // }
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46
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47 // Check the validity of the received data
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48 // if (!validate_image(buffer, bufferSize)) {
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49 // Print(L"Invalid kernel image received\n");
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50 // return EFI_INVALID_PARAMETER;
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51 // }
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52
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53
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54 Print(L"Hello,2!\n");
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55 Path = FileDevicePath(LoadedImageParent->DeviceHandle, L"\\kernel.elf");
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56 if (Path == NULL) {
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57 Print(L"Could not get device path.");
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58 return EFI_INVALID_PARAMETER;
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59 }
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60 Print(L"Hello,3!\n");
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61 Status = uefi_call_wrapper(BS->LoadImage, 6, FALSE, ImageHandle, Path, NULL, 0, &Image);
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62 if (EFI_ERROR(Status)) {
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63 Print(L"Could not load %r", Status);
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64 FreePool(Path);
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65 return Status;
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66 }
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67 Print(L"Hello,4!\n");
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68 Status = uefi_call_wrapper(BS->OpenProtocol, 6, Image, &LoadedImageProtocol, (void**)&LoadedImage, ImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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69 if (EFI_ERROR(Status)) {
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70 Print(L"Could not get LoadedImageProtocol handler %r\n", Status);
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71 uefi_call_wrapper(BS->UnloadImage, 1, Image);
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72 FreePool(Path);
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73 return Status;
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74 }
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75 Print(L"Hello,5!\n");
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76 LoadedImage->LoadOptions = Options;
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77 LoadedImage->LoadOptionsSize = (StrLen(LoadedImage->LoadOptions)+1) * sizeof(CHAR16);
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78
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79 Print(L"Hello,6!\n");
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80 Status = uefi_call_wrapper(BS->StartImage, 3, Image, NULL, NULL);
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81 uefi_call_wrapper(BS->UnloadImage, 1, Image);
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82 FreePool(Path);
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83 Print(L"Hello,7!\n");
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84
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85 return EFI_SUCCESS;
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86 }
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87
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