From 42ae768f08f2ec8a41d2ea2183f30a571f0c432f Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Tue, 22 Apr 2025 08:48:07 +0200
Subject: 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>
---
 dev/kernel/FirmwareKit/EPM.h  | 11 +++++++++--
 dev/kernel/FirmwareKit/GPT.h  | 16 +++-------------
 dev/kernel/FirmwareKit/VEPM.h | 29 +++++++++++++++++++++++++++++
 3 files changed, 41 insertions(+), 15 deletions(-)

(limited to 'dev/kernel/FirmwareKit')

diff --git a/dev/kernel/FirmwareKit/EPM.h b/dev/kernel/FirmwareKit/EPM.h
index 548bb9a7..6db82506 100644
--- a/dev/kernel/FirmwareKit/EPM.h
+++ b/dev/kernel/FirmwareKit/EPM.h
@@ -80,8 +80,8 @@ typedef struct EPM_GUID
  */
 struct PACKED EPM_PART_BLOCK
 {
-	Kernel::Char  Magic[kEPMMagicLength];
-	Kernel::Char  Name[kEPMNameLength];
+	Kernel::Char  Magic[kEPMMagicLength] = {0};
+	Kernel::Char  Name[kEPMNameLength] = {0};
 	EPM_GUID	  Guid;
 	Kernel::Int32 Version;
 	Kernel::Int64 NumBlocks;
@@ -108,4 +108,11 @@ enum
 	kEPMInvalidOS = 0xff,
 };
 
+inline EPM_GUID kEPMNilGuid = {
+    0x0U,              
+    0x0U,                  
+    0x0U,                  
+    { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 }
+};
+
 #endif // ifndef FIRMWAREKIT_EPM_H
diff --git a/dev/kernel/FirmwareKit/GPT.h b/dev/kernel/FirmwareKit/GPT.h
index aab6b650..4be1fed2 100644
--- a/dev/kernel/FirmwareKit/GPT.h
+++ b/dev/kernel/FirmwareKit/GPT.h
@@ -17,19 +17,9 @@
 
 namespace Kernel
 {
-	struct GPT_GUID;
 	struct GPT_PARTITION_TABLE;
 	struct GPT_PARTITION_ENTRY;
 
-	/// @brief GPT GUID structure.
-	typedef struct GPT_GUID
-	{
-		Kernel::UInt32 Data1;
-		Kernel::UInt16 Data2;
-		Kernel::UInt16 Data3;
-		Kernel::UInt8  Data4[8];
-	} GPT_GUID;
-
 	struct PACKED GPT_PARTITION_TABLE final
 	{
 		Char	 Signature[kMagicLenGPT];
@@ -41,7 +31,7 @@ namespace Kernel
 		UInt64	 LBAAltHeader;
 		UInt64	 FirstGPTEntry;
 		UInt64	 LastGPTEntry;
-		GPT_GUID Guid;
+		EfiGUID Guid;
 		UInt64	 StartingLBA;
 		UInt32	 NumPartitionEntries;
 		UInt32	 SizeOfEntries;
@@ -51,8 +41,8 @@ namespace Kernel
 
 	struct PACKED GPT_PARTITION_ENTRY
 	{
-		GPT_GUID PartitionTypeGUID;
-		GPT_GUID UniquePartitionGUID;
+		EfiGUID PartitionTypeGUID;
+		EfiGUID UniquePartitionGUID;
 		UInt64	 StartLBA;
 		UInt64	 EndLBA;
 		UInt64	 Attributes;
diff --git a/dev/kernel/FirmwareKit/VEPM.h b/dev/kernel/FirmwareKit/VEPM.h
index 9d8fa4d4..2b95e12d 100644
--- a/dev/kernel/FirmwareKit/VEPM.h
+++ b/dev/kernel/FirmwareKit/VEPM.h
@@ -8,7 +8,36 @@
 #define FIRMWAREKIT_VEPM_H
 
 #include <FirmwareKit/EPM.h>
+#include <FirmwareKit/EFI.h>
 
 /// @brief The Virtual Explicit Partition Map scheme extension.
 
+#ifdef __NE_VEPM__
+#ifdef kEPMMagic
+#undef kEPMMagic
+#endif // kEPMMagic
+
+#define kEPMMagic "EPMVM"
+
+/// @brief VEPM GUID.
+/// @note This is the GUID used to identify a VEPM partition.
+inline EPM_GUID kVEPMGuidEPM = {
+    0x9a1b3f2e,              
+    0x4c3f,                  
+    0x4d52,                  
+    { 0xa7, 0x83, 0x9c, 0x21, 0x7b, 0x5e, 0x4d, 0xac }
+};
+
+/// @brief VEPM GUID.
+/// @note This is the GUID used to identify a VEPM partition (EFI version)
+inline EfiGUID kVEPMGuidEFI = {
+    0x9a1b3f2e,              
+    0x4c3f,                  
+    0x4d52,                  
+    { 0xa7, 0x83, 0x9c, 0x21, 0x7b, 0x5e, 0x4d, 0xac }
+};
+
+#define kVEPMGuidStr "9a1b3f2e-4c3f-4d52-a783-9c217b5e4dac"
+#endif // __NE_VEPM__
+
 #endif // FIRMWAREKIT_VEPM_H
\ No newline at end of file
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