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https://github.com/CloverHackyColor/CloverBootloader.git
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84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
/** @file
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Functions for video bios patches.
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**/
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#ifndef __VIDEO_BIOS_PATCH_LIB_H__
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#define __VIDEO_BIOS_PATCH_LIB_H__
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/**
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Set of Search & replace bytes for VideoBiosPatchBytes().
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**/
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typedef struct _VBIOS_PATCH_BYTES {
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VOID *Find;
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VOID *Replace;
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UINTN NumberOfBytes;
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} VBIOS_PATCH_BYTES;
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/**
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Unlocks video bios area for writing.
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@retval EFI_SUCCESS If area is unlocked.
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@retval other In case of error.
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**/
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EFI_STATUS
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EFIAPI
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VideoBiosUnlock (
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VOID
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);
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/**
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Locks video bios area for writing.
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@retval EFI_SUCCESS If area is locked.
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@retval other In case of error.
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**/
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EFI_STATUS
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EFIAPI
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VideoBiosLock (
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VOID
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);
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/**
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Performs mutltiple Find&Replace operations on the video bios memory.
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@param FindAndReplace Pointer to array of VBIOS_PATCH_BYTES.
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@param FindAndReplaceCount Number of VBIOS_PATCH_BYTES elements in a FindAndReplace array.
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@retval EFI_SUCCESS If no error occured.
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@retval other In case of error.
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**/
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EFI_STATUS
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EFIAPI
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VideoBiosPatchBytes (
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IN VBIOS_PATCH_BYTES *FindAndReplace,
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IN UINTN FindAndReplaceCount
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);
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/**
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Determines "native" resolution from Edid detail timing descriptor
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and patches first video mode with that timing/resolution info.
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@param Edid Edid to use. If NULL, then Edid will be read from EFI_EDID_ACTIVE_PROTOCOL
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@retval EFI_SUCCESS If no error occured.
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@retval other In case of error.
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**/
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EFI_STATUS
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EFIAPI
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VideoBiosPatchNativeFromEdid (
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IN UINT8 *Edid OPTIONAL
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);
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#endif // __VIDEO_BIOS_PATCH_LIB_H__
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