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1) Add package description file (dec) for PcAtChipsetPkg 

2) Add Pcd8259LegacyModeMask for platform developer configure default mask value in legacy mode.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8750 6f19259b-4bc3-4df7-8a09-765794883524
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klu2 2009-07-06 02:59:37 +00:00
parent 0547cf4b30
commit 31ed75a9bd
1 changed files with 47 additions and 0 deletions
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PcAtChipsetPkg/PcAtChipsetPkg.dec Normal file
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#/** @file
# Public definitions for PcAtChipset package.
#
# This package is designed to public interfaces and implementation which follows
# PcAt defacto standard.
#
# Copyright (c) 2009, 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.common]
## 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
[Guids.common]
gPcAtChipsetPkgTokenSpaceGuid = { 0x326ae723, 0xae32, 0x4589, { 0x98, 0xb8, 0xca, 0xc2, 0x3c, 0xdc, 0xc1, 0xb1 } }