Kernel: Lots of changes.

ArchKit: Remove rt_wait_400ns, as it is unused outside the AMD64 HAL.
Processor.hpp: Fix typo inside AMD64's StackFrame.
HalPageAlloc.hpp: Rename ControlRegisterBits::Paging to ControlRegisterBits::PageEnable.
HalPageAlloc.cpp: Rework Page allocation API.
HalHardwareMP.cpp: Rename from HalHardwareAPIC.cpp, implement primitive routines.
MBCI: Add new fields inside MBCI host according to standard.

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

9 files changed, 68 insertions, 26 deletions

diff --git a/Private/HALKit/AMD64/HalHardwareAPIC.cpp b/Private/HALKit/AMD64/HalHardwareMP.cpp
index 6d5fe234..0e9f3022 100644
--- a/Private/HALKit/AMD64/HalHardwareAPIC.cpp
+++ b/Private/HALKit/AMD64/HalHardwareMP.cpp
@@ -9,27 +9,31 @@
 // bugs = 0
 
 namespace NewOS {
-// @brief wakes up thread.
-// wakes up thread from hang.
+/// @brief wakes up thread.
+/// wakes up thread from hang.
 void rt_wakeup_thread(HAL::StackFrame* stack) {
   HAL::rt_cli();
 
-    // TODO
+  stack->Rcx = 0;
 
   HAL::rt_sti();
 }
 
-static void __rt_hang_proc(void) {
-  while (1) {
-
+/// @brief Hangs until RCX register is cleared.
+/// @param stack 
+static void __rt_hang_proc(HAL::StackFrame* stack) {
+  while (stack->Rcx == 1) {
+    ;
   }
 }
 
-// @brief makes thread sleep.
-// hooks and hangs thread to prevent code from executing.
+/// @brief makes thread sleep.
+/// hooks and hangs thread to prevent code from executing.
 void rt_hang_thread(HAL::StackFrame* stack) {
   HAL::rt_cli();
 
+  __rt_hang_proc(stack);
+
   HAL::rt_sti();
 }
 }  // namespace NewOS
diff --git a/Private/HALKit/AMD64/HalPageAlloc.cpp b/Private/HALKit/AMD64/HalPageAlloc.cpp
index 53680668..3a8d3047 100644
--- a/Private/HALKit/AMD64/HalPageAlloc.cpp
+++ b/Private/HALKit/AMD64/HalPageAlloc.cpp
@@ -12,34 +12,65 @@
 STATIC NewOS::Boolean kAllocationInProgress = false;
 namespace NewOS {
 namespace HAL {
+namespace Detail {
+struct VirtualMemoryHeader {
+  Boolean Present : 1;
+  Boolean ReadWrite : 1;
+  Boolean User : 1;
+};
+
+struct VirtualMemoryHeaderTraits {
+  /// @brief Get next header.
+  /// @param current 
+  /// @return 
+  VirtualMemoryHeader* Next(VirtualMemoryHeader* current) {
+    return current + sizeof(PTE);
+  }
+
+  /// @brief Get previous header.
+  /// @param current 
+  /// @return 
+  VirtualMemoryHeader* Prev(VirtualMemoryHeader* current) {
+    return current - sizeof(PTE);
+  }
+};
+}
+
 /// @brief Allocates a new page of memory.
 /// @param sz the size of it.
 /// @param rw read/write flag.
 /// @param user user flag.
 /// @return the page table of it.
 STATIC auto hal_try_alloc_new_page(Boolean rw, Boolean user) -> VoidPtr {
+  if (kAllocationInProgress) return nullptr;
+
   kAllocationInProgress = true;
-  PTE* newAddress = (PTE*)kKernelVirtualStart;
 
-  while (newAddress->Present) {
-    newAddress = newAddress + sizeof(PTE);
+  ///! fetch from the start.
+  Detail::VirtualMemoryHeader* vmHeader = reinterpret_cast<Detail::VirtualMemoryHeader*>(kKernelVirtualStart);
+  Detail::VirtualMemoryHeaderTraits traits;
+
+  while (vmHeader->Present) {
+    vmHeader = traits.Next(vmHeader);
   }
 
-  newAddress->Present = true;
-  newAddress->Rw = rw;
-  newAddress->User = user;
+  vmHeader->Present = true;
+  vmHeader->ReadWrite = rw;
+  vmHeader->User = user;
 
   kAllocationInProgress = false;
 
-  return reinterpret_cast<VoidPtr>(newAddress);
+  return reinterpret_cast<VoidPtr>(vmHeader);
 }
 
 /// @brief Allocate a new page to be used by the OS.
-/// @param rw
-/// @param user
+/// @param rw read/write bit.
+/// @param user user bit.
 /// @return
 auto hal_alloc_page(Boolean rw, Boolean user) -> VoidPtr {
+  /// Wait for a ongoing allocation to complete.
   while (kAllocationInProgress) {
+    ;
   }
 
   /// allocate new page.
diff --git a/Private/HALKit/AMD64/HalPageAlloc.hpp b/Private/HALKit/AMD64/HalPageAlloc.hpp
index 9cd10213..d23c6e96 100644
--- a/Private/HALKit/AMD64/HalPageAlloc.hpp
+++ b/Private/HALKit/AMD64/HalPageAlloc.hpp
@@ -60,7 +60,7 @@ enum class ControlRegisterBits {
   AlignementMask = 18,
   NotWriteThrough = 29,
   CacheDisable = 30,
-  Paging = 31,
+  PageEnable = 31,
 };
 
 inline UInt8 control_register_cast(ControlRegisterBits reg) {
diff --git a/Private/HALKit/AMD64/Processor.hpp b/Private/HALKit/AMD64/Processor.hpp
index a2aaf8f7..7e2624d7 100644
--- a/Private/HALKit/AMD64/Processor.hpp
+++ b/Private/HALKit/AMD64/Processor.hpp
@@ -82,7 +82,7 @@ using interruptTrap = UIntPtr(UIntPtr sp);
 typedef UIntPtr Reg;
 
 struct PACKED StackFrame final {
-    Reg IntNum, Excpetion;
+    Reg IntNum, Exception;
     Reg Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;
     Reg R8, R9, R10, R11, R12, R13, R14, R15;
     Reg Gs, Fs;
diff --git a/Private/HALKit/AMD64/Storage/AHCI.cxx b/Private/HALKit/AMD64/Storage/AHCI.cxx
index 2b58b744..5e6b3348 100644
--- a/Private/HALKit/AMD64/Storage/AHCI.cxx
+++ b/Private/HALKit/AMD64/Storage/AHCI.cxx
@@ -15,7 +15,7 @@
  *
  */
 
-#include <Builtins/AHCI/Defines.hxx>
+#include <Builtins/AHCI/AHCI.hxx>
 #include <KernelKit/PCI/Iterator.hpp>
 
 #ifdef __AHCI__
@@ -36,7 +36,7 @@ NewOS::Boolean drv_std_init(NewOS::UInt16& PortsImplemented) {
       iterator[devIndex].Leak().EnableMmio();
       kAhciDevice = iterator[devIndex].Leak();
 
-      kcout << "NewKernel: Found AHCI controller.\r\n";
+      kcout << "NewKernel: [PCI] Found AHCI controller.\r\n";
     
       return true;
     }
diff --git a/Private/HALKit/AMD64/Storage/ATA-DMA.cxx b/Private/HALKit/AMD64/Storage/ATA-DMA.cxx
index 523c7e17..b40910ab 100644
--- a/Private/HALKit/AMD64/Storage/ATA-DMA.cxx
+++ b/Private/HALKit/AMD64/Storage/ATA-DMA.cxx
@@ -17,7 +17,7 @@
 
 #include <StorageKit/PRDT.hpp>
 
-#include <Builtins/ATA/Defines.hxx>
+#include <Builtins/ATA/ATA.hxx>
 #include <ArchKit/ArchKit.hpp>
 
 using namespace NewOS;
diff --git a/Private/HALKit/AMD64/Storage/ATA-PIO.cxx b/Private/HALKit/AMD64/Storage/ATA-PIO.cxx
index 0ff3591e..ebced11c 100644
--- a/Private/HALKit/AMD64/Storage/ATA-PIO.cxx
+++ b/Private/HALKit/AMD64/Storage/ATA-PIO.cxx
@@ -15,7 +15,7 @@
  *
  */
 
-#include <Builtins/ATA/Defines.hxx>
+#include <Builtins/ATA/ATA.hxx>
 #include <ArchKit/ArchKit.hpp>
 
 #ifdef __ATA_PIO__
diff --git a/Private/HALKit/PowerPC/HalThread.cxx b/Private/HALKit/PowerPC/HalThread.cxx
index af8bcc6f..a91e7f28 100644
--- a/Private/HALKit/PowerPC/HalThread.cxx
+++ b/Private/HALKit/PowerPC/HalThread.cxx
@@ -7,7 +7,4 @@
 #include <HALKit/PowerPC/Processor.hpp>
 #include <KernelKit/DebugOutput.hpp>
 
-extern "C" void hal_flush_tlb() {}
-extern "C" void rt_wait_400ns() {}
-
 extern "C" NewOS::HAL::StackFramePtr rt_get_current_context() { return nullptr; }
diff --git a/Private/HALKit/PowerPC/HalVirtualMemory.cxx b/Private/HALKit/PowerPC/HalVirtualMemory.cxx
new file mode 100644
index 00000000..0015257e
--- /dev/null
+++ b/Private/HALKit/PowerPC/HalVirtualMemory.cxx
@@ -0,0 +1,10 @@
+/* -------------------------------------------
+
+    Copyright Mahrouss Logic
+
+------------------------------------------- */
+
+#include <HALKit/PowerPC/Processor.hpp>
+#include <KernelKit/DebugOutput.hpp>
+
+extern "C" void hal_flush_tlb() {}