mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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154 lines
4.4 KiB
C
154 lines
4.4 KiB
C
/*
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* BootOptions.h
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*
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* Created on: 16 Apr 2020
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* Author: jief
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*/
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#ifndef PLATFORM_BOOTOPTIONS_H_
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#define PLATFORM_BOOTOPTIONS_H_
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typedef struct {
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///
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/// XXXX in BootXXXX.
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///
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UINT16 BootNum;
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///
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/// Pointer to raw EFI_LOAD_OPTION (BootXXXX) variable content.
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///
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VOID *Variable;
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///
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/// Variable size in bytes.
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///
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UINTN VariableSize;
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///
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/// BootOption Attributes (first 4 bytes from Variable).
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///
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UINT32 Attributes;
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///
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/// BootOption FilePathListLength (next 2 bytes from Variable).
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///
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UINT16 FilePathListLength;
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///
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/// Null terminated BootOption Description (pointer to 6th byte of Variable).
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///
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CONST CHAR16 *Description;
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///
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/// Size in bytes of BootOption Description.
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///
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UINTN DescriptionSize;
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///
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/// Pointer to BootOption FilePathList.
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///
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EFI_DEVICE_PATH_PROTOCOL *FilePathList;
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///
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/// Pointer to BootOption OptionalData.
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///
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UINT8 *OptionalData;
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///
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/// BootOption OptionalData size in bytes.
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///
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UINTN OptionalDataSize;
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} BO_BOOT_OPTION;
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/** Finds and returns pointer to specified DevPath node in DevicePath or NULL. */
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EFI_DEVICE_PATH_PROTOCOL *
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FindDevicePathNodeWithType (
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
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IN UINT8 Type,
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IN UINT8 SubType OPTIONAL
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);
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//Parses BootXXXX (XXXX = BootNum) var (from BootOption->Variable) and returns it in BootOption.
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EFI_STATUS
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ParseBootOption (OUT BO_BOOT_OPTION *BootOption);
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/** Prints BootXXXX vars found listed in BootOrder, plus print others if AllBootOptions == TRUE. */
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VOID
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PrintBootOptions (
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IN BOOLEAN AllBootOptions
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);
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/** Prints BootOrder with DBG. */
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VOID
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PrintBootOrder (
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IN UINT16 BootOrder[],
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IN UINTN BootOrderLen
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);
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/** Reads BootXXXX (XXXX = BootNum) var, parses it and returns in BootOption.
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* Caller is responsible for releasing BootOption->Variable with FreePool().
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*/
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EFI_STATUS
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GetBootOption (
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IN UINT16 BootNum,
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OUT BO_BOOT_OPTION *BootOption
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);
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/** Returns gEfiGlobalVariableGuid:BootOrder as UINT16 array and it's length (num of elements).
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* Caller is responsible for releasing BootOrder mem (FreePool()).
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*/
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EFI_STATUS
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GetBootOrder (
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OUT UINT16 *BootOrder[],
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OUT UINTN *BootOrderLen
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);
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/** Searches BootXXXX vars for entry that points to given FileDeviceHandle/FileName
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* and returns BootNum (XXXX in BootXXXX variable name) and BootIndex (index in BootOrder)
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* if found.
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*/
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EFI_STATUS
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FindBootOptionForFile (
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IN EFI_HANDLE FileDeviceHandle,
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IN CHAR16 *FileName,
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OUT UINT16 *BootNum,
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OUT UINTN *BootIndex
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);
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/** Adds new boot option for given file system device handle FileDeviceHandle, file path FileName
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* and Description, to be BootIndex in the list of options (0 based).
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* If UseShortForm == TRUE, then only the hard drive media dev path will be used instead
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* of full device path.
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* Long (full) form:
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* PciRoot(0x0)/Pci(0x1f,0x2)/Sata(0x1,0x0)/HD(1,GPT,96004846-a018-49ad-bc9f-4e5a340adc4b,0x800,0x64000)/\EFI\BOOT\File.efi
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* Short form:
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* HD(1,GPT,96004846-a018-49ad-bc9f-4e5a340adc4b,0x800,0x64000)/\EFI\BOOT\File.efi
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*/
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EFI_STATUS
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AddBootOptionForFile (
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IN EFI_HANDLE FileDeviceHandle,
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IN CONST CHAR16 *FileName,
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IN BOOLEAN UseShortForm,
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IN CONST CHAR16 *Description,
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IN UINT8 *OptionalData,
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IN UINTN OptionalDataSize,
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IN UINTN BootIndex,
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OUT UINT16 *BootNum
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);
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/** Deletes boot option specified with BootNum (XXXX in BootXXXX var name). */
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EFI_STATUS
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DeleteBootOption (
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IN UINT16 BootNum
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);
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/** Deletes boot option for file specified with FileDeviceHandle and FileName. */
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EFI_STATUS
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DeleteBootOptionForFile (
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IN EFI_HANDLE FileDeviceHandle,
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IN CONST CHAR16 *FileName
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);
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/** Deletes all boot option that points to a file which contains FileName in it's path. */
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EFI_STATUS
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DeleteBootOptionsContainingFile (
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IN CHAR16 *FileName
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);
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#endif /* PLATFORM_BOOTOPTIONS_H_ */
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