PcAtChipsetPkg/PcAtChipsetPkg.dec

## @file
# Public definitions for PcAtChipset package.
#
# This package is designed to public interfaces and implementation which follows
# PcAt defacto standard.
#
# Copyright (c) 2009 - 2010, Intel Corporation.
#
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
##

[Defines]
  DEC_SPECIFICATION              = 0x00010005
  PACKAGE_NAME                   = PcAtChipsetPkg
  PACKAGE_GUID                   = B728689A-52D3-4b8c-AE89-2CE5514CC6DC
  PACKAGE_VERSION                = 0.1

[PcdsFixedAtBuild]
  ## Pcd8259LegacyModeMask defines the default mask value for platform. This value is determined
  #  1) If platform only support pure UEFI, value should be set to 0xFFFF or 0xFFFE;
  #     Because only clock interrupt is allowed in legacy mode in pure UEFI platform.
  #  2) If platform install CSM and use thunk module:
  #     a) If thunk call provided by CSM binary requires some legacy interrupt support, the corresponding bit 
  #        should be opened as 0.
  #        For example, if keyboard interfaces provided CSM binary use legacy keyboard interrupt in 8259 bit 2, then
  #        the value should be set to 0xFFFC
  #     b) If all thunk call provied by CSM binary do not require legacy interrupt support, value should be set
  #        to 0xFFFF or 0xFFFE.
  #
  #  Because the value is used as intialization value, PCD's type should be FixedAtBuild.
  #
  #  The default value of legacy mode mask could be changed by EFI_LEGACY_8259_PROTOCOL->SetMask(). But it is rarely
  #  need change it except some special cases such as when initializing the CSM binary, it should be set to 0xFFFF to 
  #  mask all legacy interrupt. Please restore the original legacy mask value if changing is made for these special case.
  #
  gPcAtChipsetPkgTokenSpaceGuid.Pcd8259LegacyModeMask|0x00000001|UINT16|0xFFFF
  
  ## Pcd8259LegacyModeEdgeLevel defines the default edge level for legacy mode's interrrupt controller.
  gPcAtChipsetPkgTokenSpaceGuid.Pcd8259LegacyModeEdgeLevel|0x00000002|UINT16|0x0000
  
[Guids]
  gPcAtChipsetPkgTokenSpaceGuid = { 0x326ae723, 0xae32, 0x4589, { 0x98, 0xb8, 0xca, 0xc2, 0x3c, 0xdc, 0xc1, 0xb1 } }