mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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120 lines
5.0 KiB
C
120 lines
5.0 KiB
C
//
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/// @file OsxFatBinaryDrv/OsxFatBinary.h
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///
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/// Fat Binary driver
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///
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/// Fat Binary driver to add Fat Binary support to the LoadImage-function
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///
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//
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// CHANGELOG:
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//
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// UNKNOWN
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// Kabyl and rafirafi
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// Initial implementation
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//
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#ifndef _FAT_BINARY_DRV_H_
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#define _FAT_BINARY_DRV_H_
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// FAT_BINARY_MAGIC
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/// The common "Fat Binary Magic" number used to identify a Fat binary
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#define FAT_BINARY_MAGIC 0x0ef1fab9
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// CPU_TYPE_X86
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/// The constant CPU x86-architecture code
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#define CPU_TYPE_X86 0x07
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// CPU_TYPE_X86_64
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/// The constant CPU x86_64-architecture code
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#define CPU_TYPE_X86_64 0x01000007
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// CPU_SUBTYPE_I386_ALL
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/// The constant CPU x86-sub-architecture
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#define CPU_SUBTYPE_I386_ALL 0x03
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// OrigLoadImage
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/// Stores the address of the original LoadImage function
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EFI_IMAGE_LOAD OrigLoadImage;
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// FAT_HEADER
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/// Defintion of the Fat file header
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typedef struct _FAT_HEADER {
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UINT32 Magic; /// The assumed "Fat Binary Magic" number found in the file
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UINT32 NumFatArch; /// The hard-coded number of architectures within the file
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} FAT_HEADER;
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// FAT_ARCH
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/// Defintion of the the Fat architecture-specific file header
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typedef struct _FAT_ARCH {
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UINT32 CpuType; /// The found CPU architecture specifier
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UINT32 CpuSubtype; /// The found CPU sub-architecture specifier
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UINT32 Offset; /// The offset of the architecture-specific boot file
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UINT32 Size; /// The size of the architecture-specific boot file
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UINT32 Align; /// The alignment as a power of 2 (necessary for the x86_64 architecture)
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} FAT_ARCH;
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// UefiMain
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/// The user Entry Point for Application. The user code starts with this function
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/// as the real entry point for the application.
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///
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/// @param[in] ImageHandle The firmware allocated handle for the EFI image.
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/// @param[in] SystemTable A pointer to the EFI System Table.
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///
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/// @retval EFI_SUCCESS The entry point is executed successfully.
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/// @retval other Some error occurs when executing this entry point.
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EFI_STATUS
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EFIAPI
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UefiMain(IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable);
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// OverrideFunctions
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/// Overrides the original LoadImage function with the Fat Binary-compatible
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/// and saves a pointer to the old.
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///
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/// @retval EFI_SUCCESS The override is executed successfully.
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EFI_STATUS
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EFIAPI
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OverrideFunctions();
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// OvrLoadImage
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/// Loads an EFI image into memory. Supports the Fat Binary format.
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///
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/// @param[in] BootPolicy If TRUE, indicates that the request originates from the boot
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/// manager, and that the boot manager is attempting to load
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/// FilePath as a boot selection. Ignored if SourceBuffer is
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/// not NULL.
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/// @param[in] ParentImageHandle The caller's image handle.
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/// @param[in] DevicePath The DeviceHandle specific file path from which the image is
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/// loaded.
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/// @param[in] SourceBuffer If not NULL, a pointer to the memory location containing a copy
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/// of the image to be loaded.
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/// @param[in] SourceSize The size in bytes of SourceBuffer. Ignored if SourceBuffer is NULL.
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/// @param[out] ImageHandle The pointer to the returned image handle that is created when the
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/// image is successfully loaded.
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///
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/// @retval EFI_SUCCESS Image was loaded into memory correctly.
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/// @retval EFI_NOT_FOUND Both SourceBuffer and DevicePath are NULL.
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/// @retval EFI_INVALID_PARAMETER One or more parametes are invalid.
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/// @retval EFI_UNSUPPORTED The image type is not supported.
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/// @retval EFI_OUT_OF_RESOURCES Image was not loaded due to insufficient resources.
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/// @retval EFI_LOAD_ERROR Image was not loaded because the image format was corrupt or not
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/// understood.
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/// @retval EFI_DEVICE_ERROR Image was not loaded because the device returned a read error.
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/// @retval EFI_ACCESS_DENIED Image was not loaded because the platform policy prohibits the
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/// image from being loaded. NULL is returned in *ImageHandle.
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/// @retval EFI_SECURITY_VIOLATION Image was loaded and an ImageHandle was created with a
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/// valid EFI_LOADED_IMAGE_PROTOCOL. However, the current
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/// platform policy specifies that the image should not be started.
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EFI_STATUS
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EFIAPI
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OvrLoadImage(BOOLEAN BootPolicy,
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EFI_HANDLE ParentImageHandle,
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EFI_DEVICE_PATH_PROTOCOL *FilePath,
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VOID *SourceBuffer,
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UINTN SourceSize,
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EFI_HANDLE *ImageHandle);
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#endif
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