introduce a stable NTL_DDK driver ABI to replace direct HAL_API and kernel-header access in drivers, add code/kernel/io_ddk.c and code/public/ntlite/ddk/ headers, change DriverEntry to take (const NTL_DDK*, NTL_DRIVER_INIT*), update kmain to build the DDK once via IoInitializeDdk/IoGetDdk and hand it to both boot and runtime drivers, downgrade code/public/ntlite/ddi/io_driver.h to a legacy I/O model header pulling from ntlite/ddk instead of kernel internals, move code/third_party/lwip into code/drivers/net/lwip/third_party, fix up lwip_sources.txt and build.c include paths to match, split build.c's single CFLAGS macro into COMMON/KERNEL/USER/BOOT/DRIVER cflags.

code/drivers/storage/ahci/ahci.c

@@ -2,7 +2,7 @@
 
 #include "ahci.h"
 
-const HAL_API *g_hal;
+const NTL_DDK* gAhciDdk;
 DRIVER_OBJECT  g_driver;
 
 static AHCI_CONTROLLER* g_controllers[MAX_AHCI_CONTROLLERS];
@@ -58,7 +58,7 @@ static KSTATUS port_init_memory(AHCI_DRIVE *drv) {
 
     drv->structPhys = MmPfnAllocateContiguous(PORT_PAGES_STRUCT, MmPfnUseDma);
     if (!drv->structPhys) return NTLSTATUS_NO_MEMORY;
-    drv->structVirt = g_hal->PhysToVirt(drv->structPhys);
+    drv->structVirt = gAhciDdk->Memory->PhysToVirt(drv->structPhys);
     // Force NOCACHE on DMA descriptor memory.
     MmPteProtectRange((uintptr_t)drv->structVirt,
                      PORT_PAGES_STRUCT * 4096, flags);
@@ -66,7 +66,7 @@ static KSTATUS port_init_memory(AHCI_DRIVE *drv) {
 
     drv->bouncePhys = MmPfnAllocateContiguous(BOUNCE_PAGES, MmPfnUseDma);
     if (!drv->bouncePhys) return NTLSTATUS_NO_MEMORY;
-    drv->bounceVirt = g_hal->PhysToVirt(drv->bouncePhys);
+    drv->bounceVirt = gAhciDdk->Memory->PhysToVirt(drv->bouncePhys);
     // Bounce buffer: NOCACHE to ensure CPU writes reach physical memory
     // before the HBA's DMA engine reads them.
     MmPteProtectRange((uintptr_t)drv->bounceVirt,
@@ -887,9 +887,13 @@ static KSTATUS AhciAddDevice(DRIVER_OBJECT* driver, DEVICE_OBJECT* physicalDevic
 }
 
 // Implements the driver Entry operation.
-KSTATUS DriverEntry(const HAL_API *hal) {
+KSTATUS DriverEntry(const NTL_DDK* ddk, NTL_DRIVER_INIT* init) {
+    (void)init;
+    if (!ddk || !ddk->Memory || !ddk->Memory->PhysToVirt)
+        return NTLSTATUS_INVALID_PARAMETER;
+
     DbgPrint("AHCI: driver loading...\n");
-    g_hal = hal;
+    gAhciDdk = ddk;
     g_controllerCount = 0;
     g_nextDiskIndex = 0;
 

code/drivers/storage/ahci/ahci.h

@@ -7,16 +7,15 @@
 #include <string.h>
 #include <ntlite/ddi/io_driver.h>
 #include <ntlite/ddi/pci.h>
-#include <kernel/mm_phys.h>
-#include <kernel/mm_pfn.h>
-#include <kernel/mm_virt.h>
-#include <kernel/ke_debug.h>
-#include <kernel/ke_event.h>
-#include <kernel/ke_semaphore.h>
-#include <kernel/ke_thread.h>
-#include <kernel/ke_irq.h>
-#include <kernel/ke_irp.h>
-#include <kernel/ke_dpc.h>
+#include <ntlite/ddk/ddk.h>
+#include <ntlite/ddk/memory.h>
+#include <ntlite/ddk/debug.h>
+#include <ntlite/ddk/event.h>
+#include <ntlite/ddk/semaphore.h>
+#include <ntlite/ddk/thread.h>
+#include <ntlite/ddk/interrupt.h>
+#include <ntlite/ddk/irp.h>
+#include <ntlite/ddk/dpc.h>
 
 typedef enum {
     FIS_TYPE_REG_H2D   = 0x27,
@@ -379,7 +378,7 @@ struct AHCI_CONTROLLER {
     bool            removed;
 };
 
-extern const HAL_API *g_hal;
+extern const NTL_DDK* gAhciDdk;
 extern DRIVER_OBJECT g_driver;
 
 KSTATUS ahci_map_mmio(uint64_t physBase, uint64_t length);

code/drivers/storage/ahci/ahci_port.c

@@ -10,7 +10,7 @@ KSTATUS ahci_map_mmio(uint64_t physBase, uint64_t length) {
     uint64_t pageEnd = (physBase + length + PAGE_SIZE - 1u) & ~(uint64_t)(PAGE_SIZE - 1u);
     int pageIndex = 0;
     for (uint64_t phys = pageBase; phys < pageEnd; phys += PAGE_SIZE, pageIndex++) {
-        uintptr_t   virt  = (uintptr_t)g_hal->PhysToVirt(phys);
+        uintptr_t   virt  = (uintptr_t)gAhciDdk->Memory->PhysToVirt(phys);
         uint64_t    flags = PAGE_PRESENT | PAGE_WRITE | PAGE_NOCACHE;
         KSTATUS     st    = MmPteMapPage(virt, phys, flags, MmPteMapFailIfPresent);
         // Ignore NTLSTATUS_ALREADY_EXISTS - a prior mapping with different flags