Changeset 108794 in vbox for trunk/src/VBox/Devices/EFI/FirmwareNew/FatPkg/EnhancedFatDxe/Fat.h

Timestamp:

Mar 31, 2025 11:31:09 AM (2 weeks ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

168237

Message:

Devices/EFI/FirmwareNew: Merge edk2-stable202502 from the vendor branch and make it build for the important platforms, bugref:4643

Location:

trunk/src/VBox/Devices/EFI/FirmwareNew

Files:

• . (modified) (1 prop)
• FatPkg/EnhancedFatDxe/Fat.h (modified) (3 diffs)

trunk/src/VBox/Devices/EFI/FirmwareNew/FatPkg/EnhancedFatDxe/Fat.h

@@ -85 +85 @@
 #define FAT_FATCACHE_GROUP_MAX_COUNT      16
 
+// For cache block bits, use a UINT64
+typedef UINT64 DIRTY_BLOCKS;
+#define BITS_PER_BYTE         8
+#define DIRTY_BITS_PER_BLOCK  ((sizeof (DIRTY_BLOCKS) * BITS_PER_BYTE))
+
+// largest cache line (64KB) / MinLbaSize (512) = 128 bits
+#define DIRTY_BITS  ((1 << FAT_DATACACHE_PAGE_MAX_ALIGNMENT) / (1 << MIN_BLOCK_ALIGNMENT))
+
+// Number of DIRTY_BLOCKS to hold DIRTY_BITS bits.
+#define DIRTY_BLOCKS_SIZE  (DIRTY_BITS / sizeof (DIRTY_BLOCKS))
+
+STATIC_ASSERT ((((1 << FAT_DATACACHE_PAGE_MAX_ALIGNMENT) / (1 << MIN_BLOCK_ALIGNMENT)) % sizeof (DIRTY_BLOCKS)) == 0, "DIRTY_BLOCKS not a proper size");
+
 //
 // Used in 8.3 generation algorithm
@@ -144 +157 @@
 //
 typedef struct {
-  UINTN      PageNo;
-  UINTN      RealSize;
-  BOOLEAN    Dirty;
+  UINTN           PageNo;
+  UINTN           RealSize;
+  BOOLEAN         Dirty;
+  DIRTY_BLOCKS    DirtyBlocks[DIRTY_BLOCKS_SIZE];
 } CACHE_TAG;
 
@@ -153 +167 @@
   UINT64       LimitAddress;
   UINT8        *CacheBase;
+  UINT32       BlockSize;
   BOOLEAN      Dirty;
   UINT8        PageAlignment;