Vlv2DeviceRefCodePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / Vlv2DeviceRefCodePkg / AcpiTablesPCAT / IgdOGBDA.ASL

/*++\r
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Copyright (c)  1999  - 2014, Intel Corporation. All rights reserved\r
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  SPDX-License-Identifier: BSD-2-Clause-Patent\r
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Module Name:\r
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  IgdOGBDA.ASL\r
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Abstract:\r
\r
  IGD OpRegion/Software SCI Reference Code for the Baytrail Family.\r
  This file contains Get BIOS Data Area funciton support for\r
  the Integrated Graphics Device (IGD) OpRegion/Software SCI mechanism.\r
\r
--*/\r
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Method (GBDA, 0, Serialized)\r
{\r
\r
  // Supported calls: Sub-function 0\r
\r
  If (LEqual(GESF, 0))\r
  {\r
    //<TODO> Update implementation specific supported calls.  Reference\r
    // code is set to Intel's validated implementation.\r
\r
    Store(0x0000279, PARM)\r
\r
    Store(Zero, GESF)               // Clear the exit parameter\r
    Return(SUCC)                    // Success\r
  }\r
\r
  // Requested callbacks: Sub-function 1\r
\r
  If (LEqual(GESF, 1))\r
  {\r
\r
    //<TODO> Update implementation specific system BIOS requested call\r
    // back functions.  Call back functions are where the driver calls the\r
    // system BIOS at function indicated event.\r
\r
    Store(0x00000240, PARM)\r
\r
    Store(Zero, GESF)               // Clear the exit parameter\r
    Return(SUCC)                    // Success\r
  }\r
\r
  // Get Boot display Preferences: Sub-function 4\r
\r
  If (LEqual(GESF, 4))\r
  {\r
\r
    //<TODO> Update the implementation specific Get Boot Display\r
    // Preferences function.\r
\r
    And(PARM, 0xEFFF0000, PARM)     // PARM[30:16] = Boot device ports\r
    And(PARM, ShiftLeft(DeRefOf(Index(DBTB, IBTT)), 16), PARM)\r
    Or(IBTT, PARM, PARM)            // PARM[7:0] = Boot device type\r
\r
    Store(Zero, GESF)               // Clear the exit parameter\r
    Return(SUCC)                    // Success\r
  }\r
\r
  // Panel details: Sub-function 5\r
\r
  If (LEqual(GESF, 5))\r
  {\r
\r
    //<TODO> Update the implementation specific Get Panel Details\r
    // function.\r
\r
    Store(IPSC, PARM)               // Report the scaling setting\r
    Or(PARM, ShiftLeft(IPAT, 8), PARM)\r
    Add(PARM, 0x100, PARM)          // Adjust panel type, 0 = VBT default\r
    Or(PARM, ShiftLeft(LIDS, 16), PARM) // Report the lid state\r
    Add(PARM, 0x10000, PARM)        // Adjust the lid state, 0 = Unknown\r
    Or(PARM, ShiftLeft(IBLC, 18), PARM) // Report the BLC setting\r
    Or(PARM, ShiftLeft(IBIA, 20), PARM) // Report the BIA setting\r
    Store(Zero, GESF)\r
    Return(SUCC)\r
  }\r
\r
  // TV-standard/Video-connector: Sub-function 6\r
\r
  If (LEqual(GESF, 6))\r
  {\r
\r
    //<TODO> Update the implementation specific Get\r
    // TV-standard/Video-connectorPanel function.\r
\r
    Store(ITVF, PARM)\r
    Or(PARM, ShiftLeft(ITVM, 4), PARM)\r
    Store(Zero, GESF)\r
    Return(SUCC)\r
  }\r
\r
  // Internal graphics: Sub-function 7\r
\r
  If (LEqual(GESF, 7))\r
  {\r
    Store(GIVD, PARM)               // PARM[0]      - VGA mode(1=VGA)\r
    Xor(PARM, 1, PARM)              // Invert the VGA mode polarity\r
    Or(PARM, ShiftLeft(GMFN, 1), PARM) // PARM[1]   - # IGD PCI functions-1\r
    // PARM[3:2]    - Reserved\r
    // PARM[4]      - IGD D3 support(0=cold)\r
    // PARM[10:5]   - Reserved\r
    Or(PARM, ShiftLeft(3, 11), PARM) // PARM[12:11] - DVMT mode(11b = 5.0)\r
\r
    //\r
    // Report DVMT 5.0 Total Graphics memory size.\r
    //\r
    Or(PARM, ShiftLeft(IDMS, 17), PARM)   // Bits 20:17 are for Gfx total memory size\r
\r
    // If the "Set Internal Graphics" call is supported, the modified\r
    // settings flag must be programmed per the specification.  This means\r
    // that the flag must be set to indicate that system BIOS requests\r
    // these settings.  Once "Set Internal Graphics" is called, the\r
    //  modified settings flag must be cleared on all subsequent calls to\r
    // this function.\r
\r
    // Report the graphics frequency based on DISPLAY_CLOCK_FREQUENCY_ENCODING [MMADR+0x20C8]\r
\r
    Or(ShiftLeft(Derefof(Index(CDCT, \_SB.PCI0.GFX0.MCHK.DCFE)), 21),PARM, PARM)\r
\r
    Store(1, GESF)                  // Set the modified settings flag\r
    Return(SUCC)\r
  }\r
\r
  // Spread spectrum clocks: Sub-function 10\r
\r
  If (LEqual(GESF, 10))\r
  {\r
\r
    Store(0, PARM)                  // Assume SSC is disabled\r
\r
    If(ISSC)\r
    {\r
      Or(PARM, 3, PARM)       // If SSC enabled, return SSC1+Enabled\r
    }\r
\r
    Store(0, GESF)                  // Set the modified settings flag\r
    Return(SUCC)                    // Success\r
  }\r
\r
\r
  // A call to a reserved "Get BIOS data" function was received.\r
\r
  Store(Zero, GESF)                     // Clear the exit parameter\r
  Return(CRIT)                          // Reserved, "Critical failure"\r
}\r