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/* -------------------------------------------
Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
------------------------------------------- */
#include <BootKit/BootKit.h>
#include <modules/CoreGfx/FBMgr.h>
#include <modules/CoreGfx/TextMgr.h>
#include <FirmwareKit/EFI.h>
#include <FirmwareKit/EFI/API.h>
#include <FirmwareKit/Handover.h>
#include <KernelKit/MSDOS.h>
#include <KernelKit/PE.h>
#include <KernelKit/PEF.h>
#include <NewKit/Macros.h>
#include <NewKit/Ref.h>
#include <BootKit/BootThread.h>
#include <modules/CoreGfx/FBMgr.h>
// Makes the compiler shut up.
#ifndef kMachineModel
#define kMachineModel "ZkaOS"
#endif // !kMachineModel
#ifndef kExpectedWidth
#define kExpectedWidth (1920)
#endif
#ifndef kExpectedHeight
#define kExpectedHeight (1080)
#endif
/** Graphics related. */
STATIC EfiGraphicsOutputProtocol* kGop = nullptr;
STATIC UInt16 kGopStride = 0U;
STATIC EfiGUID kGopGuid;
EXTERN_C Void rt_reset_hardware();
EXTERN EfiBootServices* BS;
/**
@brief Finds and stores the GOP object.
*/
STATIC Bool boot_init_fb() noexcept
{
kGopGuid = EfiGUID(EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID);
kGop = nullptr;
if (BS->LocateProtocol(&kGopGuid, nullptr, (VoidPtr*)&kGop) != kEfiOk)
return No;
kGopStride = 4;
for (SizeT i = 0; i < kGop->Mode->MaxMode; ++i)
{
EfiGraphicsOutputProtocolModeInformation* infoPtr = nullptr;
UInt32 sz = 0U;
kGop->QueryMode(kGop, i, &sz, &infoPtr);
if (infoPtr->HorizontalResolution == kExpectedWidth &&
infoPtr->VerticalResolution == kExpectedHeight)
{
kGop->SetMode(kGop, i);
return Yes;
}
}
return No;
}
EXTERN EfiBootServices* BS;
/// @brief Main EFI entrypoint.
/// @param image_handle Handle of this image.
/// @param sys_table The system table of it.
/// @return nothing, never returns.
EFI_EXTERN_C EFI_API Int32 Main(EfiHandlePtr image_handle,
EfiSystemTable* sys_table)
{
InitEFI(sys_table); ///! Init the EFI library.
HEL::BootInfoHeader* handover_hdr =
new HEL::BootInfoHeader();
UInt32 map_key = 0;
UInt32 size_struct_ptr = sizeof(EfiMemoryDescriptor);
EfiMemoryDescriptor* struct_ptr = nullptr;
UInt32 sz_desc = sizeof(EfiMemoryDescriptor);
UInt32 rev_desc = 0;
#ifdef ZBA_USE_FB
if (!boot_init_fb())
return 1; ///! Init the GOP.
for (SizeT index_vt = 0; index_vt < sys_table->NumberOfTableEntries;
++index_vt)
{
Char* vendor_table = reinterpret_cast<Char*>(
sys_table->ConfigurationTable[index_vt].VendorTable);
// ACPI's 'RSD PTR', which contains the ACPI SDT (MADT, FACP...)
if (vendor_table[0] == 'R' && vendor_table[1] == 'S' &&
vendor_table[2] == 'D' && vendor_table[3] == ' ' &&
vendor_table[4] == 'P' && vendor_table[5] == 'T' &&
vendor_table[6] == 'R' && vendor_table[7] == ' ')
{
handover_hdr->f_HardwareTables.f_VendorPtr = (VoidPtr)vendor_table;
break;
}
}
// ------------------------------------------ //
// draw background color.
// ------------------------------------------ //
handover_hdr->f_GOP.f_The = kGop->Mode->FrameBufferBase;
handover_hdr->f_GOP.f_Width = kGop->Mode->Info->VerticalResolution;
handover_hdr->f_GOP.f_Height = kGop->Mode->Info->HorizontalResolution;
handover_hdr->f_GOP.f_PixelPerLine = kGop->Mode->Info->PixelsPerScanLine;
handover_hdr->f_GOP.f_PixelFormat = kGop->Mode->Info->PixelFormat;
handover_hdr->f_GOP.f_Size = kGop->Mode->FrameBufferSize;
#endif // ZBA_USE_FB
// ------------------------------------------- //
// Grab MP services, extended to runtime. //
// ------------------------------------------- //
EfiGUID guid_mp = EfiGUID(EFI_MP_SERVICES_PROTOCOL_GUID);
EfiMpServicesProtocol* mp = nullptr;
BS->LocateProtocol(&guid_mp, nullptr, reinterpret_cast<VoidPtr*>(&mp));
handover_hdr->f_HardwareTables.f_MpPtr = reinterpret_cast<VoidPtr>(mp);
kHandoverHeader = handover_hdr;
fb_init();
FB::fb_clear_video();
FBDrawBitMapInRegion(zka_disk, NE_DISK_WIDTH, NE_DISK_HEIGHT, (kHandoverHeader->f_GOP.f_Width - NE_DISK_WIDTH) / 2, (kHandoverHeader->f_GOP.f_Height - NE_DISK_HEIGHT) / 2);
fb_clear();
UInt32 cnt_enabled = 0;
UInt32 cnt_disabled = 0;
if (mp)
{
mp->GetNumberOfProcessors(mp, &cnt_disabled, &cnt_enabled);
handover_hdr->f_HardwareTables.f_MultiProcessingEnabled = cnt_enabled > 1;
}
else
{
handover_hdr->f_HardwareTables.f_MultiProcessingEnabled = NO;
}
//-------------------------------------------------------------//
// Update handover file specific table and phyiscal start field.
//-------------------------------------------------------------//
handover_hdr->f_BitMapStart = nullptr; /* Start of bitmap. */
handover_hdr->f_BitMapSize = kHandoverBitMapSz; /* Size of bitmap. */
while (BS->AllocatePool(EfiLoaderData, handover_hdr->f_BitMapSize, &handover_hdr->f_BitMapStart) != kEfiOk)
{
if (handover_hdr->f_BitMapStart)
{
BS->FreePool(handover_hdr->f_BitMapStart);
handover_hdr->f_BitMapStart = nullptr;
}
}
// ------------------------------------------ //
// null these fields, to avoid being reused later.
// ------------------------------------------ //
handover_hdr->f_FirmwareCustomTables[0] = nullptr;
handover_hdr->f_FirmwareCustomTables[1] = nullptr;
handover_hdr->f_FirmwareVendorLen = Boot::BStrLen(sys_table->FirmwareVendor);
handover_hdr->f_Magic = kHandoverMagic;
handover_hdr->f_Version = kHandoverVersion;
// Provide fimware vendor name.
Boot::BCopyMem(handover_hdr->f_FirmwareVendorName, sys_table->FirmwareVendor,
handover_hdr->f_FirmwareVendorLen);
handover_hdr->f_FirmwareVendorLen = Boot::BStrLen(sys_table->FirmwareVendor);
// Assign to global 'kHandoverHeader'.
Boot::BootFileReader reader_kernel(L"neoskrnl.exe", image_handle);
reader_kernel.ReadAll(0);
// ------------------------------------------ //
// If we succeed in reading the blob, then execute it.
// ------------------------------------------ //
if (reader_kernel.Blob())
{
auto kernel_thread = Boot::BootThread(reader_kernel.Blob());
kernel_thread.SetName("BootZ: MicroKernel.");
handover_hdr->f_KernelImage = reader_kernel.Blob();
Boot::ExitBootServices(map_key, image_handle);
kernel_thread.Start(handover_hdr, YES);
}
CANT_REACH();
}
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