NeFS: Officialize minimum disk size into the specs.

HPFS: Start implementing it.
UPS: Check PTime, and decrementing it when it isn't our time yet, also added new Subsystem entries.
FSKit: Better documentation and provide 256U instead of only 256.
EBS: Fixed HPFS magic number, which wasn't correctly bound to 8 bytes.
BUILD: Fixed blob.json for epm.asm

5 files changed, 30 insertions, 8 deletions

diff --git a/dev/hpfs/ReadMe.md b/dev/hpfs/ReadMe.md
index 21fcc961..53778988 100644
--- a/dev/hpfs/ReadMe.md
+++ b/dev/hpfs/ReadMe.md
@@ -1,4 +1,4 @@
-# High Performance File System
+# High Performance File System.
 
 Filesystem driver for the HPFS specification.
 
diff --git a/dev/hpfs/epm/blob.json b/dev/hpfs/epm/blob.json
index 4ce4fc1c..4b1905b5 100644
--- a/dev/hpfs/epm/blob.json
+++ b/dev/hpfs/epm/blob.json
@@ -1,6 +1,6 @@
 {
   "compiler_path": "nasm",
-  "sources_path": ["EPM.asm"],
-  "output_name": "hpfs.bin",
+  "sources_path": ["epm.asm"],
+  "output_name": "bl.bin",
   "compiler_flags": ["-f bin"]
 }
diff --git a/dev/hpfs/epm/ebs.i b/dev/hpfs/epm/ebs.i
index c137b6f4..c486f463 100644
--- a/dev/hpfs/epm/ebs.i
+++ b/dev/hpfs/epm/ebs.i
@@ -7,7 +7,7 @@
 ;; DUMP THIS BLOB TO DISK, WHEN FORMATTING THE SSD.
 
 HPFS_EBS_HEADER:
-    db "   HPFS" ;; MAGIC NUMBER OF FILESYSTEM
+    db "  HPFS", 0 ;; MAGIC NUMBER OF FILESYSTEM
     dw 8 ;; MAGIC NUMBER LENGTH.
     dq 0 ;; RESERVED 4
     dw 0x0100 ;; VERSION
diff --git a/dev/hpfs/hpfs_specs.hxx b/dev/hpfs/hpfs_specs.hxx
index f04ce63f..851623a4 100644
--- a/dev/hpfs/hpfs_specs.hxx
+++ b/dev/hpfs/hpfs_specs.hxx
@@ -9,4 +9,21 @@
 
 #pragma once
 
-#define cHPFSVersion 0x0100
+#include <ddk/ddk.h>
+
+#define kHPFSVersion 0x01000
+#define kHPFSMagic "  HPFS"
+#define kHPFSMagicLen 8
+
+/** @brief Drive type enum. */
+enum
+{
+	kHPFSInvalidDrive,
+	kHPFSCDROMDrive,
+	kHPFSHDDDrive,
+	kHPFSSSDDrive,
+	kHPFSUSBDrive,
+};
+
+/** @brief Explicit Boot Sector structure. */
+struct HPFS_EXPLICIT_BOOT_SECTOR;
diff --git a/dev/hpfs/src/hpfs_main.cxx b/dev/hpfs/src/hpfs_main.cxx
index 1ab6c653..ce712f2c 100644
--- a/dev/hpfs/src/hpfs_main.cxx
+++ b/dev/hpfs/src/hpfs_main.cxx
@@ -8,15 +8,20 @@
 ------------------------------------------- */
 
 #include <hpfs/hpfs_specs.hxx>
-#include <ddk/ddk.h>
 
 static DDK_OBJECT_MANIFEST* kIfsObject = nullptr;
 
 /** @brief HPFS IFS main module function. */
-int32_t ModuleMain(void)
+DK_EXTERN int32_t ModuleMain(void)
 {
 	auto ifs_handle = KernelGetObject(0, "IFS_OBJECT");
-	// TODO: Register this IFS with necessary I/O functions...
+
+	if (ifs_handle == nil)
+	{
+		return 1;
+	}
+
+	/// TODO: Register this IFS with necessary I/O functions...
 
 	kIfsObject = ifs_handle;