:boom: A big refactor on the filesystem structure.

Signed-off-by: Amlal <amlal@el-mahrouss-logic.com>

12 files changed, 376 insertions, 0 deletions

diff --git a/dev/zka/HALKit/ARM64/.gitkeep b/dev/zka/HALKit/ARM64/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/.gitkeep
diff --git a/dev/zka/HALKit/ARM64/APM/.gitkeep b/dev/zka/HALKit/ARM64/APM/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/APM/.gitkeep
diff --git a/dev/zka/HALKit/ARM64/HalKernelMain.cxx b/dev/zka/HALKit/ARM64/HalKernelMain.cxx
new file mode 100644
index 00000000..a1b75ccf
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/HalKernelMain.cxx
@@ -0,0 +1,68 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+
+#include <ArchKit/ArchKit.hxx>
+#include <Modules/CoreCG/FbRenderer.hxx>
+#include <FirmwareKit/Handover.hxx>
+#include <KernelKit/FileMgr.hxx>
+#include <KernelKit/Framebuffer.hxx>
+#include <KernelKit/Heap.hxx>
+#include <KernelKit/PEFCodeMgr.hxx>
+#include <KernelKit/UserProcessScheduler.hxx>
+#include <NewKit/Json.hxx>
+#include <Modules/CoreCG/Accessibility.hxx>
+#include <KernelKit/CodeMgr.hxx>
+#include <Modules/ACPI/ACPIFactoryInterface.hxx>
+#include <NetworkKit/IPC.hxx>
+#include <CFKit/Property.hxx>
+#include <Modules/CoreCG/TextRenderer.hxx>
+
+namespace Kernel::HAL
+{
+	/// @brief Gets the system cores using the MADT.
+	/// @param rsdPtr The 'RSD PTR' data structure.
+	EXTERN void mp_get_cores(Kernel::voidPtr rsdPtr) noexcept;
+} // namespace Kernel::HAL
+
+Kernel::Void hal_real_init(Kernel::Void) noexcept;
+EXTERN_C Kernel::Void ke_dll_entrypoint(Kernel::Void);
+
+EXTERN_C void hal_init_platform(
+	Kernel::HEL::HANDOVER_INFO_HEADER* HandoverHeader)
+{
+	/* Setup globals. */
+
+	kHandoverHeader = HandoverHeader;
+
+	if (kHandoverHeader->f_Magic != kHandoverMagic &&
+		kHandoverHeader->f_Version != kHandoverVersion)
+	{
+		return;
+	}
+
+	CG::CGDrawBackground();
+
+	// get page size.
+	kKernelBitMpSize = kHandoverHeader->f_BitMapSize;
+
+	// get virtual address start (for the heap)
+	kKernelBitMpStart = reinterpret_cast<Kernel::VoidPtr>(
+		reinterpret_cast<Kernel::UIntPtr>(kHandoverHeader->f_BitMapStart));
+
+	if (kHandoverHeader->f_HardwareTables.f_MultiProcessingEnabled)
+		Kernel::HAL::mp_get_cores(kHandoverHeader->f_HardwareTables.f_VendorPtr);
+
+	kcout << "Creating filesystem and such.\r";
+
+	if (kHandoverHeader->f_HardwareTables.f_MultiProcessingEnabled)
+		Kernel::HAL::mp_get_cores(kHandoverHeader->f_HardwareTables.f_VendorPtr);
+
+	Kernel::NeFileSystemMgr::Mount(Kernel::mm_new_class<Kernel::NeFileSystemMgr>());
+
+	mp_do_user_switch();
+
+	Kernel::ke_stop(RUNTIME_CHECK_FAILED);
+}
diff --git a/dev/zka/HALKit/ARM64/HalPageInternal.S b/dev/zka/HALKit/ARM64/HalPageInternal.S
new file mode 100644
index 00000000..8fcf40ff
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/HalPageInternal.S
@@ -0,0 +1,5 @@
+.text
+
+hal_flush_tlb:
+    tlbi
+    ret
diff --git a/dev/zka/HALKit/ARM64/HalSchedulerCore.cxx b/dev/zka/HALKit/ARM64/HalSchedulerCore.cxx
new file mode 100644
index 00000000..7545b350
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/HalSchedulerCore.cxx
@@ -0,0 +1,48 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+
+#include <KernelKit/UserProcessScheduler.hxx>
+
+using namespace Kernel;
+
+Void UserProcess::SetImageStart(UIntPtr& imageStart) noexcept
+{
+	if (imageStart == 0)
+		this->Crash();
+
+	this->StackFrame->BP = imageStart;
+	this->StackFrame->SP = this->StackFrame->BP;
+}
+
+namespace Kernel
+{
+	bool hal_check_stack(HAL::StackFramePtr stackPtr)
+	{
+		if (!stackPtr)
+			return false;
+		if (stackPtr->BP == 0 || stackPtr->SP == 0)
+			return false;
+
+		return true;
+	}
+
+	/// @brief Wakes up thread.
+	/// Wakes up thread from the hang state.
+	Void mp_wakeup_thread(HAL::StackFrame* stack)
+	{
+		ZKA_UNUSED(stack);
+	}
+
+	/// @brief makes the thread sleep on a loop.
+	/// hooks and hangs thread to prevent code from executing.
+	Void mp_hang_thread(HAL::StackFrame* stack)
+	{
+		while (Yes)
+		{
+			/* Nothing to do, code is spinning */
+		}
+	}
+} // namespace Kernel
diff --git a/dev/zka/HALKit/ARM64/HalTimer.cxx b/dev/zka/HALKit/ARM64/HalTimer.cxx
new file mode 100644
index 00000000..4ef87227
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/HalTimer.cxx
@@ -0,0 +1,16 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	File: HalTimer.cxx
+	Purpose: HAL timer
+
+	Revision History:
+
+	07/07/24: Added file (amlel)
+
+------------------------------------------- */
+
+#include <ArchKit/ArchKit.hxx>
+
+struct TIMER_INFO;
diff --git a/dev/zka/HALKit/ARM64/MBCI/.keepme b/dev/zka/HALKit/ARM64/MBCI/.keepme
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/MBCI/.keepme
diff --git a/dev/zka/HALKit/ARM64/Paging.hxx b/dev/zka/HALKit/ARM64/Paging.hxx
new file mode 100644
index 00000000..7fe020ef
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/Paging.hxx
@@ -0,0 +1,120 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+
+#pragma once
+
+/** ---------------------------------------------------
+
+	* THIS FILE CONTAINS CODE FOR ARMV8 PAGING.
+
+------------------------------------------------------- */
+
+#include <NewKit/Defines.hxx>
+
+#ifndef kPageMax
+#define kPageMax (0x200)
+#endif //! kPageMax
+
+#ifndef kPageAlign
+#define kPageAlign (0x1000)
+#endif //! kPageAlign
+
+#ifndef kPageSize
+#define kPageSize (0x1000)
+#endif // !kPageSize
+
+//! short format address range
+
+#define c16KBPage 0b000
+#define c8KBPage  0b001
+#define c4KBPage  0b010
+#define c2KBPage  0b011
+#define c1KBPage  0b100
+#define c512BPage 0b101
+#define c256BPage 0b110
+#define c128BPage 0b111
+
+/// Long format address range
+
+#define cPageMAll    \
+	{                \
+		0b000, 0b000 \
+	}
+#define cPageMToMax(M) \
+	{                  \
+		M, 0b000       \
+	}
+#define cPageMaxToM(M) \
+	{                  \
+		0b000, M       \
+	}
+#define cPageMToN(M, N) \
+	{                   \
+		M, N            \
+	}
+
+namespace Kernel::HAL
+{
+	struct PACKED PTE_4KB final
+	{
+		UInt64 Valid : 1;
+		UInt64 Table : 1;
+		UInt64 AttrIndex : 3;
+		UInt64 NS : 1;
+		UInt64 AP : 2;
+		UInt64 SH : 2;
+		UInt64 AF : 1;
+		UInt64 NG : 1;
+		UInt64 Reserved1 : 1;
+		UInt64 Contiguous : 1;
+		UInt64 Dirty : 1;
+		UInt64 Reserved : 2;
+		UInt64 PhysicalAddress : 36;
+		UInt64 Reserved3 : 4;
+		UInt64 PXN : 1;
+		UInt64 XN : 1;
+		UInt64 Reserved4 : 9;
+	};
+
+	namespace Detail
+	{
+		enum class ControlRegisterBits
+		{
+			ProtectedModeEnable = 0,
+			MonitorCoProcessor	= 1,
+			Emulation			= 2,
+			TaskSwitched		= 3,
+			ExtensionType		= 4,
+			NumericError		= 5,
+			WriteProtect		= 16,
+			AlignementMask		= 18,
+			NotWriteThrough		= 29,
+			CacheDisable		= 30,
+			PageEnable			= 31,
+		};
+
+		inline UInt8 control_register_cast(ControlRegisterBits reg)
+		{
+			return static_cast<UInt8>(reg);
+		}
+	} // namespace Detail
+
+	struct PDE_4KB final
+	{
+		PTE_4KB ALIGN(kPageAlign) fEntries[kPageMax];
+	};
+
+	auto mm_alloc_bitmap(Boolean rw, Boolean user, SizeT size) -> VoidPtr;
+	auto mm_free_bitmap(VoidPtr page_ptr) -> Bool;
+} // namespace Kernel::HAL
+
+namespace Kernel
+{
+	typedef HAL::PTE_4KB PTE;
+	typedef HAL::PDE_4KB PDE;
+} // namespace Kernel
+
+EXTERN_C void hal_flush_tlb();
diff --git a/dev/zka/HALKit/ARM64/Processor.hxx b/dev/zka/HALKit/ARM64/Processor.hxx
new file mode 100644
index 00000000..533457a9
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/Processor.hxx
@@ -0,0 +1,50 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <NewKit/Array.hxx>
+#include <NewKit/Defines.hxx>
+#include <NewKit/Utils.hxx>
+#include <FirmwareKit/Handover.hxx>
+
+#define kPageSize 512 /* 64-bit PT */
+
+#define kCPUBackendName "ARMv8"
+
+namespace Kernel::HAL
+{
+	struct PACKED Register64 final
+	{
+		UShort	Limit;
+		UIntPtr Base;
+	};
+
+	typedef UIntPtr	   Reg;
+	typedef Register64 Register;
+
+	/// @note let's keep the same name as AMD64 HAL.
+	struct PACKED StackFrame final
+	{
+		Reg R8{0};
+		Reg R9{0};
+		Reg R10{0};
+		Reg R11{0};
+		Reg R12{0};
+		Reg R13{0};
+		Reg R14{0};
+		Reg R15{0};
+	};
+
+	typedef StackFrame* StackFramePtr;
+} // namespace Kernel::HAL
+
+inline Kernel::VoidPtr kKernelBitMpStart = nullptr;
+inline Kernel::UIntPtr kKernelBitMpSize	 = 0UL;
+
+inline Kernel::VoidPtr kKernelPhysicalStart = nullptr;
+
+#include <HALKit/ARM64/Paging.hxx>
diff --git a/dev/zka/HALKit/ARM64/ReadMe.md b/dev/zka/HALKit/ARM64/ReadMe.md
new file mode 100644
index 00000000..c51229f2
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/ReadMe.md
@@ -0,0 +1,3 @@
+# ARM64 Hardware Abstraction Layer
+
+- Supported Firmware: CoreBoot/EDK/OpenMobileBoot
diff --git a/dev/zka/HALKit/ARM64/Storage/.gitkeep b/dev/zka/HALKit/ARM64/Storage/.gitkeep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/Storage/.gitkeep
diff --git a/dev/zka/HALKit/ARM64/Storage/HalFlash.cxx b/dev/zka/HALKit/ARM64/Storage/HalFlash.cxx
new file mode 100644
index 00000000..a479da93
--- /dev/null
+++ b/dev/zka/HALKit/ARM64/Storage/HalFlash.cxx
@@ -0,0 +1,66 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+
+#include <NewKit/Defines.hxx>
+#include <ArchKit/ArchKit.hxx>
+
+/// @file Flash.cxx
+/// @brief Flash memory builtin.
+
+#ifdef __USE_MBCI_FLASH__
+
+#define cMaxFlash (4U)
+
+namespace Kernel
+{
+	/// /:\\BRIDGE\\FLSH\\1
+	constexpr auto cFlashBridgeMagic	= "FLSH";
+	constexpr auto cFlashBridgeRevision = 1;
+
+	STATIC const Boolean kFlashEnabled			   = No;
+	STATIC SizeT		 kFlashSize[cMaxFlash]	   = {};
+	STATIC SizeT		 kFlashSectorSz[cMaxFlash] = {};
+
+	/// @brief Enable flash memory builtin.
+	STATIC Void drv_enable_flash(Int32 slot);
+
+	/// @brief Disable flash memory builtin.
+	STATIC Void drv_disable_flash(Int32 slot);
+
+	/// @brief get sector count.
+	/// @return drive sector count.
+	SizeT drv_get_sector_count(Int32 slot)
+	{
+		if (slot > cMaxFlash)
+			return 0;
+
+		return kFlashSectorSz[slot];
+	}
+
+	/// @brief get device size.
+	/// @return drive size
+	SizeT drv_get_size(Int32 slot)
+	{
+		if (slot > cMaxFlash)
+			return 0;
+
+		return kFlashSize[slot];
+	}
+
+	/// @brief Enable flash memory at slot.
+	STATIC Void drv_enable_flash(Int32 arg)
+	{
+		kcout << "Enabled FLSH hardware.\r";
+	}
+
+	/// @brief Disable flash memory at slot.
+	STATIC Void drv_disable_flash(Int32 arg)
+	{
+		kcout << "Disabled FLSH hardware.\r";
+	}
+} // namespace Kernel
+
+#endif // if __USE_MBCI_FLASH__ (Bridge)