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/* -------------------------------------------
Copyright (C) 2024-2025, Amlal El Mahrouss, licensed under the Apache 2.0 license.
------------------------------------------- */
/**
* @file Handover.h
* @author Amlal El Mahrouss (amlal@nekernel.org)
* @brief The handover boot protocol.
* @version 1.15
* @date 2024-02-23
*
* @copyright Copyright (c) 2024, Amlal El Mahrouss
*
*/
#pragma once
#include <FirmwareKit/EFI/EFI.h>
#include <NeKit/Defines.h>
#define kHandoverMagic (0xBADCC)
#define kHandoverVersion (0x0117)
/* Initial bitmap pointer location and size. */
#define kHandoverBitMapSz (gib_cast(4))
#define kHandoverStructSz sizeof(HEL::BootInfoHeader)
namespace Kernel::HEL {
/**
@brief The executable type enum.
*/
enum {
kTypeKernel = 100,
kTypeKernelDriver = 101,
kTypeRsrc = 102,
kTypeInvalid = 103,
kTypeCount = 4,
};
/**
@brief The executable architecture enum.
*/
enum {
kArchAMD64 = 122,
kArchARM64 = 123,
kArchRISCV = 124,
kArchCount = 3,
};
struct BootInfoHeader final {
UInt64 f_Magic;
UInt64 f_Version;
VoidPtr f_BitMapStart;
SizeT f_BitMapSize;
VoidPtr f_PageStart;
VoidPtr f_KernelImage;
SizeT f_KernelSz;
VoidPtr f_LibSystemImage;
SizeT f_LibSystemSz;
VoidPtr f_StackTop;
SizeT f_StackSz;
WideChar f_FirmwareVendorName[32];
SizeT f_FirmwareVendorLen;
VoidPtr f_FirmwareCustomTables[2]; // On EFI 0: BS 1: ST
struct {
VoidPtr f_SmBios;
VoidPtr f_VendorPtr;
VoidPtr f_MpPtr;
Bool f_MultiProcessingEnabled;
UInt32 f_ImageKey;
EfiHandlePtr f_ImageHandle;
} f_HardwareTables;
struct {
UIntPtr f_The;
SizeT f_Size;
UInt32 f_Width;
UInt32 f_Height;
UInt32 f_PixelFormat;
UInt32 f_PixelPerLine;
} f_GOP;
UInt64 f_FirmwareSpecific[8];
};
enum {
kHandoverTableBS,
kHandoverTableST,
kHandoverTableCount,
};
/// @brief Alias of bootloader main type.
typedef Int32 (*HandoverProc)(BootInfoHeader* boot_info);
} // namespace Kernel::HEL
/// @brief Bootloader information header global variable.
inline Kernel::HEL::BootInfoHeader* kHandoverHeader = nullptr;
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