meta(kernel): Reworked repository's filesystem structure.

Removing useless parts of the project too.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

5 files changed, 309 insertions, 0 deletions

diff --git a/dev/boot/src/HEL/ARM64/.gitkeep b/dev/boot/src/HEL/ARM64/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/dev/boot/src/HEL/ARM64/.gitkeep
diff --git a/dev/boot/src/HEL/ARM64/BootAPI.S b/dev/boot/src/HEL/ARM64/BootAPI.S
new file mode 100644
index 00000000..a60ad218
--- /dev/null
+++ b/dev/boot/src/HEL/ARM64/BootAPI.S
@@ -0,0 +1,12 @@
+.global rt_jump_to_address
+
+.text
+
+/**
+ @brief this function setups a stack and then jumps to
+ a function */
+rt_jump_to_address:
+    mov x19, x0
+    mov sp, x2
+    blr x19
+
diff --git a/dev/boot/src/HEL/ARM64/BootCB.S b/dev/boot/src/HEL/ARM64/BootCB.S
new file mode 100644
index 00000000..2d1ff60c
--- /dev/null
+++ b/dev/boot/src/HEL/ARM64/BootCB.S
@@ -0,0 +1,40 @@
+/* -------------------------------------------
+
+    Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#ifdef __NE_COREBOOT__
+
+.section .boot_hdr
+.align 4
+
+/* BootZ boot header begin */
+
+boot_hdr_mag:
+	.ascii "CB"
+boot_hdr_name:
+	// it has to match ten bytes.
+	.asciz "bootz\0\0"
+boot_hdr_ver:
+	.word 0x104
+boot_hdr_proc:
+	.long bootloader_start
+
+/* BootZ boot header end */
+
+.extern bootloader_main
+.extern bootloader_stack
+
+.globl bootloader_start
+bootloader_start:
+    adr     x0, bootloader_stack        
+    ldr     x1, =bootloader_start       
+    sub     x0, x0, x1                  
+    ldr     x0, [x0]                    
+    mov     sp, x0                      
+
+    bl      bootloader_main             
+    ret                                 
+
+#endif // __NE_COREBOOT__
\ No newline at end of file
diff --git a/dev/boot/src/HEL/ARM64/BootEFI.cc b/dev/boot/src/HEL/ARM64/BootEFI.cc
new file mode 100644
index 00000000..d60f305b
--- /dev/null
+++ b/dev/boot/src/HEL/ARM64/BootEFI.cc
@@ -0,0 +1,220 @@
+/* -------------------------------------------
+
+	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();
+
+		EFI::ExitBootServices(map_key, image_handle);
+
+		kernel_thread.Start(handover_hdr, YES);
+	}
+
+	CANT_REACH();
+}
diff --git a/dev/boot/src/HEL/ARM64/BootPlatform.cc b/dev/boot/src/HEL/ARM64/BootPlatform.cc
new file mode 100644
index 00000000..9713b80d
--- /dev/null
+++ b/dev/boot/src/HEL/ARM64/BootPlatform.cc
@@ -0,0 +1,37 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#include <BootKit/Platform.h>
+#include <BootKit/Protocol.h>
+#include <BootKit/BootKit.h>
+
+#ifdef __BOOTLDR_STANDALONE__
+
+using namespace Boot;
+
+EXTERN_C void rt_hlt()
+{
+	while (Yes)
+		;
+}
+
+EXTERN_C void rt_cli()
+{
+}
+
+EXTERN_C void rt_sti()
+{
+}
+
+EXTERN_C void rt_cld()
+{
+}
+
+EXTERN_C void rt_std()
+{
+}
+
+#endif // __BOOTLDR_STANDALONE__