diff options
| -rw-r--r-- | UefiLessonsPkg/SaveBGRT/SaveBGRT.c | 104 | ||||
| -rw-r--r-- | UefiLessonsPkg/SaveBGRT/SaveBGRT.inf | 23 | ||||
| -rw-r--r-- | UefiLessonsPkg/ShowTables/ShowTables.c | 16 | ||||
| -rw-r--r-- | UefiLessonsPkg/ShowTables/ShowTables.inf | 18 |
4 files changed, 161 insertions, 0 deletions
diff --git a/UefiLessonsPkg/SaveBGRT/SaveBGRT.c b/UefiLessonsPkg/SaveBGRT/SaveBGRT.c new file mode 100644 index 0000000..2fda8d8 --- /dev/null +++ b/UefiLessonsPkg/SaveBGRT/SaveBGRT.c @@ -0,0 +1,104 @@ +#include <Library/UefiBootServicesTableLib.h> +#include <Library/UefiLib.h> + +#include <Protocol/AcpiSystemDescriptionTable.h> +#include <Library/ShellLib.h> +#include <IndustryStandard/Bmp.h> + +EFI_STATUS WriteFile(CHAR16* FileName, VOID* Data, UINTN* Size) +{ + SHELL_FILE_HANDLE FileHandle; + EFI_STATUS Status = ShellOpenFileByName( + FileName, + &FileHandle, + EFI_FILE_MODE_CREATE | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ, + 0 + ); + if (!EFI_ERROR(Status)) { + Print(L"Save it to %s\n", FileName); + UINTN ToWrite = *Size; + Status = ShellWriteFile( + FileHandle, + Size, + Data + ); + if (EFI_ERROR(Status)) { + Print(L"Can't write file: %r\n", Status); + } + if (*Size != ToWrite) { + Print(L"Error! Not all data was written\n"); + } + Status = ShellCloseFile( + &FileHandle + ); + if (EFI_ERROR(Status)) { + Print(L"Can't close file: %r\n", Status); + } + } else { + Print(L"Can't open file: %r\n", Status); + } + return Status; +} + +EFI_STATUS +EFIAPI +UefiMain ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_ACPI_SDT_PROTOCOL* AcpiSdtProtocol; + EFI_STATUS Status = gBS->LocateProtocol ( + &gEfiAcpiSdtProtocolGuid, + NULL, + (VOID**)&AcpiSdtProtocol + ); + if (EFI_ERROR (Status)) { + return Status; + } + + BOOLEAN BGRT_found = FALSE; + UINTN Index = 0; + EFI_ACPI_SDT_HEADER* Table; + EFI_ACPI_TABLE_VERSION Version; + UINTN TableKey; + while (TRUE) { + Status = AcpiSdtProtocol->GetAcpiTable(Index, + &Table, + &Version, + &TableKey + ); + if (EFI_ERROR(Status)) { + break; + } + if (((CHAR8)((Table->Signature >> 0) & 0xFF) == 'B') && + ((CHAR8)((Table->Signature >> 8) & 0xFF) == 'G') && + ((CHAR8)((Table->Signature >> 16) & 0xFF) == 'R') && + ((CHAR8)((Table->Signature >> 24) & 0xFF) == 'T')) { + BGRT_found = TRUE; + break; + } + Index++; + } + if (!BGRT_found) { + Print(L"BGRT table is not present in the system\n"); + return EFI_UNSUPPORTED; + } + + EFI_ACPI_6_3_BOOT_GRAPHICS_RESOURCE_TABLE* BGRT = (EFI_ACPI_6_3_BOOT_GRAPHICS_RESOURCE_TABLE*)Table; + if (BGRT->ImageType == 0) { + BMP_IMAGE_HEADER* BMP = (BMP_IMAGE_HEADER*)(BGRT->ImageAddress); + + if ((BMP->CharB != 'B') || (BMP->CharM != 'M')) { + Print(L"BMP image has wrong signature!\n"); + return EFI_UNSUPPORTED; + } + Print(L"BGRT conatins BMP image with %dx%d resolution\n", BMP->PixelWidth, BMP->PixelHeight); + UINTN Size = BMP->Size; + Status = WriteFile(L"BGRT.bmp", BMP, &Size); + if (EFI_ERROR(Status)) { + Print(L"Error! Can't write BGRT.bmp file\n"); + } + } + return Status; +} diff --git a/UefiLessonsPkg/SaveBGRT/SaveBGRT.inf b/UefiLessonsPkg/SaveBGRT/SaveBGRT.inf new file mode 100644 index 0000000..93ab1b9 --- /dev/null +++ b/UefiLessonsPkg/SaveBGRT/SaveBGRT.inf @@ -0,0 +1,23 @@ +[Defines] + INF_VERSION = 1.25 + BASE_NAME = SaveBGRT + FILE_GUID = efe33e23-b17c-42b2-9551-87546f215935 + MODULE_TYPE = UEFI_APPLICATION + VERSION_STRING = 1.0 + ENTRY_POINT = UefiMain + +[Sources] + SaveBGRT.c + +[Packages] + MdePkg/MdePkg.dec + ShellPkg/ShellPkg.dec + +[LibraryClasses] + UefiApplicationEntryPoint + UefiLib + ShellLib + +[Protocols] + gEfiAcpiSdtProtocolGuid + diff --git a/UefiLessonsPkg/ShowTables/ShowTables.c b/UefiLessonsPkg/ShowTables/ShowTables.c new file mode 100644 index 0000000..aa32f41 --- /dev/null +++ b/UefiLessonsPkg/ShowTables/ShowTables.c @@ -0,0 +1,16 @@ +#include <Library/UefiBootServicesTableLib.h> +#include <Library/UefiLib.h> + +EFI_STATUS +EFIAPI +UefiMain ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + for (UINTN i=0; i<SystemTable->NumberOfTableEntries; i++) { + Print(L"%g, %p\n", SystemTable->ConfigurationTable[i].VendorGuid, + SystemTable->ConfigurationTable[i].VendorTable); + } + return EFI_SUCCESS; +} diff --git a/UefiLessonsPkg/ShowTables/ShowTables.inf b/UefiLessonsPkg/ShowTables/ShowTables.inf new file mode 100644 index 0000000..056b823 --- /dev/null +++ b/UefiLessonsPkg/ShowTables/ShowTables.inf @@ -0,0 +1,18 @@ +[Defines] + INF_VERSION = 1.25 + BASE_NAME = ShowTables + FILE_GUID = e249532c-d41a-4bd9-a4a8-7fc143e703f2 + MODULE_TYPE = UEFI_APPLICATION + VERSION_STRING = 1.0 + ENTRY_POINT = UefiMain + +[Sources] + ShowTables.c + +[Packages] + MdePkg/MdePkg.dec + +[LibraryClasses] + UefiApplicationEntryPoint + UefiLib + |