1 files changed, 164 insertions, 0 deletions
diff --git a/ReferenceCode/Chipset/SystemAgent/AcpiTables/SaSsdt/IgdOGBDA.ASL b/ReferenceCode/Chipset/SystemAgent/AcpiTables/SaSsdt/IgdOGBDA.ASL
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+++ b/ReferenceCode/Chipset/SystemAgent/AcpiTables/SaSsdt/IgdOGBDA.ASL
@@ -0,0 +1,164 @@
+/*++
+  This file contains an 'Intel Peripheral Driver' and uniquely
+  identified as "Intel Reference Module" and is
+  licensed for Intel CPUs and chipsets under the terms of your
+  license agreement with Intel or your vendor.  This file may
+  be modified by the user, subject to additional terms of the
+  license agreement
+--*/
+
+/*++
+
+Copyright (c)  1999 - 2012 Intel Corporation. All rights reserved
+This software and associated documentation (if any) is furnished
+under a license and may only be used or copied in accordance
+with the terms of the license. Except as permitted by such
+license, no part of this software or documentation may be
+reproduced, stored in a retrieval system, or transmitted in any
+form or by any means without the express written consent of
+Intel Corporation.
+
+
+Module Name:
+
+  IgdOGBDA.ASL
+
+Abstract:
+
+  IGD OpRegion/Software SCI Reference Code.
+  This file contains Get BIOS Data Area funciton support for
+  the Integrated Graphics Device (IGD) OpRegion/Software SCI mechanism.
+
+--*/
+
+
+Method (GBDA, 0, Serialized)
+{
+
+  // Supported calls: Sub-function 0
+
+  If (LEqual(GESF, 0))
+  {
+    //<TODO> Update implementation specific supported calls.  Reference
+    // code is set to Intel's validated implementation.
+
+    Store(0x0000659, PARM)
+
+    Store(Zero, GESF)		// Clear the exit parameter
+    Return(SUCC)			// Success
+  }
+
+  // Requested callbacks: Sub-function 1
+
+  If (LEqual(GESF, 1))
+  {
+
+    //<TODO> Update implementation specific system BIOS requested call
+    // back functions.  Call back functions are where the driver calls the
+    // system BIOS at function indicated event.
+
+    Store(0x300482, PARM)
+    If(LEqual(S0ID, One)){
+      Or(PARM, 0x100, PARM) //Request Fn 8 callback in CS systems
+    }
+    Store(Zero, GESF)		// Clear the exit parameter
+    Return(SUCC)			// Success
+  }
+
+  // Get Boot display Preferences: Sub-function 4
+
+  If (LEqual(GESF, 4))
+  {
+
+    //<TODO> Update the implementation specific Get Boot Display
+    // Preferences function.
+
+    And(PARM, 0xEFFF0000, PARM)	// PARM[30:16] = Boot device ports
+    And(PARM, ShiftLeft(DeRefOf(Index(DBTB, IBTT)), 16), PARM)
+    Or(IBTT, PARM, PARM)		// PARM[7:0] = Boot device type
+
+    Store(Zero, GESF)		// Clear the exit parameter
+    Return(SUCC)			// Success
+  }
+
+  // Panel details: Sub-function 5
+
+  If (LEqual(GESF, 5))
+  {
+
+    //<TODO> Update the implementation specific Get Panel Details
+    // function.
+
+    Store(IPSC, PARM)		// Report the scaling setting
+    Or(PARM, ShiftLeft(IPAT, 8), PARM)
+    Add(PARM, 0x100, PARM)		// Adjust panel type, 0 = VBT default
+    Or(PARM, ShiftLeft(LIDS, 16), PARM) // Report the lid state
+    Add(PARM, 0x10000, PARM)	// Adjust the lid state, 0 = Unknown
+    Or(PARM, ShiftLeft(IBIA, 20), PARM) // Report the BIA setting
+    Store(Zero, GESF)
+    Return(SUCC)
+  }
+
+  // Internal graphics: Sub-function 7
+
+  If (LEqual(GESF, 7))
+  {
+    Store(GIVD, PARM)		// PARM[0]      - VGA mode(1=VGA)
+    Xor(PARM, 1, PARM)		// Invert the VGA mode polarity
+    Or(PARM, ShiftLeft(GMFN, 1), PARM) // PARM[1]   - # IGD PCI functions-1
+                                       // PARM[3:2]    - Reserved
+                                       // PARM[4]      - IGD D3 support(0=cold)
+                                       // PARM[10:5]   - Reserved
+    Or(PARM, ShiftLeft(3, 11), PARM) // PARM[12:11] - DVMT mode(11b = 5.0)
+
+    //
+    // Report DVMT 5.0 Total Graphics memory size.
+    //
+    Or(PARM, ShiftLeft(IDMS, 17), PARM)   // Bits 20:17 are for Gfx total memory size
+
+    // If the "Set Internal Graphics" call is supported, the modified
+    // settings flag must be programmed per the specification.  This means
+    // that the flag must be set to indicate that system BIOS requests
+    // these settings.  Once "Set Internal Graphics" is called, the
+    //  modified settings flag must be cleared on all subsequent calls to
+    // this function.
+
+    // Report the graphics frequency based on B0:D2:F0:RF0h[12].  Must
+    // take into account the current VCO.
+
+    Or(ShiftLeft(Derefof(Index(Derefof(Index(CDCT, HVCO)), CDVL)), 21),PARM, PARM)
+
+    Store(1, GESF)			// Set the modified settings flag
+    Return(SUCC)
+  }
+
+  // Spread spectrum clocks: Sub-function 10
+
+  If (LEqual(GESF, 10))
+  {
+
+    Store(0, PARM)			// Assume SSC is disabled
+
+    If(ISSC)
+    {
+      Or(PARM, 3, PARM)	// If SSC enabled, return SSC1+Enabled
+    }
+
+    Store(0, GESF)			// Set the modified settings flag
+    Return(SUCC)			// Success
+  }
+
+
+  If (LEqual(GESF, 11))
+  {
+    Store(KSV0, PARM)		// First four bytes of AKSV
+    Store(KSV1, GESF)		// Fifth byte of AKSV
+
+    Return(SUCC)			// Success
+  }
+
+  // A call to a reserved "Get BIOS data" function was received.
+
+  Store(Zero, GESF)			// Clear the exit parameter
+  Return(CRIT)				// Reserved, "Critical failure"
+}