Changeset 65577 in vbox for trunk/src/VBox

Timestamp:

Feb 1, 2017 8:07:03 PM (8 years ago)

Author:

vboxsync

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

113230

Message:

vbox.dsl: change ACPI standard to 2 to get 64-bit math and properly calculate the 64-bit prefetch window

File:

• trunk/src/VBox/Devices/PC/vbox.dsl (modified) (3 diffs)

trunk/src/VBox/Devices/PC/vbox.dsl

@@ -14 +14 @@
 // hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 
-DefinitionBlock ("DSDT.aml", "DSDT", 1, "VBOX  ", "VBOXBIOS", 2)
+DefinitionBlock ("DSDT.aml", "DSDT", 2, "VBOX  ", "VBOXBIOS", 2)
 {
     // Declare debugging ports withing SystemIO
@@ -1578 +1578 @@
                     0x0000000000000000,       // _GRA: Granularity.
                     0x0000000100000000,       // _MIN: Min address, 4GB, will be overwritten.
-                    0x00000020ffffffff,       // _MAX: Max possible address, will be overwritten.
+                    0x00000080ffffffff,       // _MAX: Max possible address, will be overwritten.
                     0x0000000000000000,       // _TRA: Translation
-                    0x0000002000000000,       // _LEN: Range length (calculated dynamically)
+                    0x0000008000000000,       // _LEN: Range length (def. 512G, calculated dynamically)
                     ,                         // ResourceSourceIndex: Optional field left blank
                     ,                         // ResourceSource:      Optional field left blank
@@ -1600 +1600 @@
                 if (LNotEqual (PMEM, 0x00000000))
                 {
-                    Store (PMEM, TM4N)
-                    ShiftLeft (TM4N, 16, TM4N)
-
-                    Store (PMEM, TM4X)
-                    Store (0x10000000, TM4L)      // Size 16TB
-                    Add (TM4X, TM4L, TM4X)
-                    Subtract (TM4X, 1, TM4X)
-                    ShiftLeft (TM4X, 16, TM4X)    // MAX = MIN + LEN - (1 << 16)
-//                    Add (TM4X, 0xffff, TM4X)    // For some reason this operation prevents
-                                                  // at least Linux from determining this
-                                                  // resource!
-                    ShiftLeft (TM4L, 16, TM4L)
+                    Store (0x10000000, Local1)           // 16TB in units of 64KB
+                    Multiply (PMEM, 0x10000, TM4N)       // PMEM in units of 64KB
+                    Multiply (Local1, 0x10000, TM4L)
+                    Subtract (Add (TM4N, TM4L), 1, TM4X) // MAX = MIN + LEN - 1
 
                     ConcatenateResTemplate (CRS, TOM, Local2)