1 files changed, 132 insertions, 0 deletions
diff --git a/src/mainboard/via/epia-n/acpi/pata_methods.asl b/src/mainboard/via/epia-n/acpi/pata_methods.asl
new file mode 100644
index 000000000000..68d505868e27
--- /dev/null
+++ b/src/mainboard/via/epia-n/acpi/pata_methods.asl
@@ -0,0 +1,132 @@
+/*
+ * Minimalist ACPI DSDT table for EPIA-N / NL
+ * Basic description of some hardware resources to allow
+ * interrupt assignments to be done. This is expected to be included
+ * into the PATA Device definition in ab_physical.asl
+ * (C) Copyright 2009 Jon Harrison <jon.harrison@blueyonder.co.uk>
+ *
+ */
+
+Name (TIM0, Package (0x07)
+{
+    Package (0x05)
+    {
+        0x78, 0xB4, 0xF0, 0x017F, 0x0258
+    },
+
+    Package (0x05)
+    {
+        0x20, 0x22, 0x33, 0x47, 0x5D
+    },
+
+    Package (0x05)
+    {
+        0x04, 0x03, 0x02, 0x01, 0x00
+    },
+
+    Package (0x04)
+    {
+        0x02, 0x01, 0x00, 0x00
+    },
+
+    Package (0x07)
+    {
+        0x78, 0x50, 0x3C, 0x2D, 0x1E, 0x14, 0x0F
+    },
+
+    Package (0x0F)
+    {
+        0x06, 0x05, 0x04, 0x04, 0x03, 0x03, 0x02, 0x02,
+        0x01, 0x01, 0x01, 0x01, 0x01, 0x01,0x00
+    },
+
+    Package (0x07)
+    {
+        0x0E, 0x08, 0x06, 0x04, 0x02, 0x01, 0x00
+    }
+})
+
+
+/* This method sets up the PATA Timing Control*/
+/* Note that a lot of this is done in the     */
+/* Coreboot VT8237R Init code, but this is    */
+/* already getting very cluttered with board  */
+/* specific code. Using ACPI will allow this  */
+/* to be de-cluttered a bit (so long as we're */
+/* running a ACPI Capable OS !!!)             */
+
+Method (PMEX, 0, Serialized)
+{
+    If (REGF)
+    {
+		/* Check if these regs are still at defaults */
+		/* Board specific timing improvement if not  */
+		/* Already changed                           */
+        If (LEqual (PMPT, 0xA8))
+        {
+            Store (0x5D, PMPT)
+        }
+
+        If (LEqual (PSPT, 0xA8))
+        {
+            Store (0x5D, PSPT)
+        }
+
+        If (LEqual (SMPT, 0xA8))
+        {
+            Store (0x5D, SMPT)
+        }
+
+        If (LEqual (SSPT, 0xA8))
+        {
+            Store (0x5D, SSPT)
+        }
+
+    }
+}
+
+/* This Method Provides the method that is used to */
+/* Reset ATA Drives to POST reset condition        */
+Method (GTF, 4, Serialized)
+{
+    Store (Buffer (0x07)
+        {
+            0x03, 0x00, 0x00, 0x00, 0x00, 0xA0, 0xEF
+        }, Local1)
+    Store (Buffer (0x07)
+        {
+            0x03, 0x00, 0x00, 0x00, 0x00, 0xA0, 0xEF
+        }, Local2)
+    CreateByteField (Local1, 0x01, MODE)
+    CreateByteField (Local2, 0x01, UMOD)
+    CreateByteField (Local1, 0x05, PCHA)
+    CreateByteField (Local2, 0x05, UCHA)
+    And (Arg0, 0x03, Local3)
+    If (LEqual (And (Local3, 0x01), 0x01))
+    {
+        Store (0xB0, PCHA)
+        Store (0xB0, UCHA)
+    }
+
+    If (Arg1)
+    {
+        Store (DerefOf (Index (DerefOf (Index (TIM0, 0x05)), Arg2)),
+            UMOD)
+        Or (UMOD, 0x40, UMOD)
+    }
+    Else
+    {
+        Store (Match (DerefOf (Index (TIM0, 0x01)), MEQ, Arg3, MTR,
+            0x00, 0x00), Local0)
+        Or (0x20, DerefOf (Index (DerefOf (Index (TIM0, 0x03)), Local0
+            )), UMOD)
+    }
+
+    Store (Match (DerefOf (Index (TIM0, 0x01)), MEQ, Arg3, MTR,
+        0x00, 0x00), Local0)
+    Or (0x08, DerefOf (Index (DerefOf (Index (TIM0, 0x02)), Local0
+        )), MODE)
+    Concatenate (Local1, Local2, Local6)
+    Return (Local6)
+}
+