dev, kernel: VEPM WiP implementation, and syschk fixes in WiP.

	- Currently working on VEPM and adapting it to SysChk.
	- Refactor DriveMgr for VEPM.
	- Fix warnings in HeFS.cc, ALIGN(8) on HeFS.h
	- Update PIO modules to use VEPM.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

5 files changed, 65 insertions, 62 deletions

diff --git a/dev/boot/src/BootThread.cc b/dev/boot/src/BootThread.cc
index 0a1e74c9..cf303bec 100644
--- a/dev/boot/src/BootThread.cc
+++ b/dev/boot/src/BootThread.cc
@@ -129,16 +129,16 @@ namespace Boot
 #ifdef __NE_AMD64__
 						if (handover_struc->HandoverArch != HEL::kArchAMD64)
 						{
-							fb_render_string("BootZ: Not an handover header, bad CPU...", 40, 10, RGB(0xFF, 0xFF, 0xFF));
+							writer.Write("BootZ: Not an handover header, bad CPU...\r");
 						}
 #elif defined(__NE_ARM64__)
 						if (handover_struc->HandoverArch != HEL::kArchARM64)
 						{
-							fb_render_string("BootZ: Not an handover header, bad CPU...", 40, 10, RGB(0xFF, 0xFF, 0xFF));
+							writer.Write("BootZ: Not an handover header, bad CPU...\r");
 						}
 #endif
 
-						fb_render_string("BootZ: Not an handover header...", 40, 10, RGB(0xFF, 0xFF, 0xFF));
+						writer.Write("BootZ: Not an handover header...\r");
 						::Boot::Stop();
 					}
 				}
@@ -190,10 +190,24 @@ namespace Boot
 
 		if (own_stack)
 		{
-			return rt_jump_to_address(fStartAddress, fHandover, &fStack[mib_cast(16) - 1]);
+			writer.Write("BootZ: Using own stack.\r");
+			writer.Write("BootZ: Stack address: ").Write((UIntPtr)&fStack[mib_cast(16) - 1]).Write("\r");
+			writer.Write("BootZ: Stack size: ").Write(mib_cast(16)).Write("\r");
+
+			rt_jump_to_address(fStartAddress, fHandover, &fStack[mib_cast(16) - 1]);
+			
+			return kEfiOk;
 		}
 		else
 		{
+			delete[] fStack;
+			fStack = nullptr;
+			// we don't need the stack anymore.
+
+			BootTextWriter writer;
+
+			writer.Write("BootZ: Using EFI stack.\r");
+
 			return reinterpret_cast<HEL::HandoverProc>(fStartAddress)(fHandover);
 		}
 
diff --git a/dev/boot/src/HEL/AMD64/BootAPI.S b/dev/boot/src/HEL/AMD64/BootAPI.S
index 963ef46a..9cc15918 100644
--- a/dev/boot/src/HEL/AMD64/BootAPI.S
+++ b/dev/boot/src/HEL/AMD64/BootAPI.S
@@ -58,3 +58,48 @@ boot_read_cr3:
 boot_write_cr3:
     mov cr3, rcx
     ret
+
+.section .text
+
+.extern rt_wait_400ns
+
+.global rt_out8
+.global rt_out16
+.global rt_out32
+
+.global rt_in8
+.global rt_in16
+.global rt_in32
+
+rt_out8:
+    mov al, dl
+    mov dx, cx
+    out dx, al
+    ret
+
+rt_out16:
+    mov ax, dx
+    mov dx, cx
+    out dx, ax
+    ret
+
+rt_out32:
+    mov eax, edx
+    mov edx, ecx
+    out dx, eax
+    ret
+
+rt_in8:
+    mov dx, cx
+    in al, dx
+    ret
+
+rt_in16:
+    mov edx, ecx
+    in ax, dx
+    ret
+
+rt_in32:
+    mov rdx, rcx
+    in eax, dx
+    ret
\ No newline at end of file
diff --git a/dev/boot/src/HEL/AMD64/BootEFI.cc b/dev/boot/src/HEL/AMD64/BootEFI.cc
index 8a920e1a..85b7f729 100644
--- a/dev/boot/src/HEL/AMD64/BootEFI.cc
+++ b/dev/boot/src/HEL/AMD64/BootEFI.cc
@@ -229,7 +229,7 @@ EFI_EXTERN_C EFI_API Int32 BootloaderMain(EfiHandlePtr	  image_handle,
 	handover_hdr->f_FirmwareVendorLen = Boot::BStrLen(sys_table->FirmwareVendor);
 	// Assign to global 'kHandoverHeader'.
 
-	WideChar kernel_path[256U] = L"vmkrnl.efi";
+	WideChar kernel_path[256U] = L"krnl.efi";
 	UInt32	 kernel_path_sz	   = 256U;
 
 	if (ST->RuntimeServices->GetVariable(L"/props/boot_path", kEfiGlobalNamespaceVarGUID, nullptr, &kernel_path_sz, kernel_path) != kEfiOk)
diff --git a/dev/boot/src/HEL/AMD64/BootPlatform.cc b/dev/boot/src/HEL/AMD64/BootPlatform.cc
index a06b8aa0..1a1f9b89 100644
--- a/dev/boot/src/HEL/AMD64/BootPlatform.cc
+++ b/dev/boot/src/HEL/AMD64/BootPlatform.cc
@@ -38,62 +38,6 @@ EXTERN_C void rt_std()
 	asm volatile("std");
 }
 
-EXTERN_C void rt_out8(UInt16 port, UInt8 value)
-{
-	asm volatile("outb %%al, %1"
-				 :
-				 : "a"(value), "Nd"(port)
-				 : "memory");
-}
-
-EXTERN_C void rt_out16(UInt16 port, UInt16 value)
-{
-	asm volatile("outw %%ax, %1"
-				 :
-				 : "a"(value), "Nd"(port)
-				 : "memory");
-}
-
-EXTERN_C void rt_out32(UInt16 port, UInt32 value)
-{
-	asm volatile("outl %%eax, %1"
-				 :
-				 : "a"(value), "Nd"(port)
-				 : "memory");
-}
-
-EXTERN_C UInt8 rt_in8(UInt16 port)
-{
-	UInt8 value;
-	asm volatile("inb %1, %%al"
-				 : "=a"(value)
-				 : "Nd"(port)
-				 : "memory");
-
-	return value;
-}
-
-EXTERN_C UInt16 rt_in16(UInt16 port)
-{
-	UInt16 value;
-	asm volatile("inw %%dx, %%ax"
-				 : "=a"(value)
-				 : "d"(port));
-
-	return value;
-}
-
-EXTERN_C UInt32 rt_in32(UInt16 port)
-{
-	UInt32 value;
-	asm volatile("inl %1, %%eax"
-				 : "=a"(value)
-				 : "Nd"(port)
-				 : "memory");
-
-	return value;
-}
-
 #else
 
 #include <HALKit/AMD64/Processor.h>
diff --git a/dev/boot/src/HEL/ARM64/BootEFI.cc b/dev/boot/src/HEL/ARM64/BootEFI.cc
index e071def1..9132cec1 100644
--- a/dev/boot/src/HEL/ARM64/BootEFI.cc
+++ b/dev/boot/src/HEL/ARM64/BootEFI.cc
@@ -226,7 +226,7 @@ EFI_EXTERN_C EFI_API Int32 BootloaderMain(EfiHandlePtr	  image_handle,
 
 	handover_hdr->f_FirmwareVendorLen = Boot::BStrLen(sys_table->FirmwareVendor);
 
-	Boot::BootFileReader reader_kernel(L"vmkrnl.efi", image_handle);
+	Boot::BootFileReader reader_kernel(L"krnl.efi", image_handle);
 
 	reader_kernel.ReadAll(0);