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| author | klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-07-06 02:59:37 +0000 |
|---|---|---|
| committer | klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-07-06 02:59:37 +0000 |
| commit | 31ed75a9bd6e9c0090b94a757fc8ab022341faa0 (patch) | |
| tree | 906733c7e064ddcfb08a25571b12ba870bf6c52e /PcAtChipsetPkg | |
| parent | 0547cf4b30b92b2909d279589c9c0c5e3337cbf2 (diff) | |
| download | edk2-31ed75a9bd6e9c0090b94a757fc8ab022341faa0.tar.gz edk2-31ed75a9bd6e9c0090b94a757fc8ab022341faa0.tar.bz2 edk2-31ed75a9bd6e9c0090b94a757fc8ab022341faa0.zip | |
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
Diffstat (limited to 'PcAtChipsetPkg')
| -rw-r--r-- | PcAtChipsetPkg/PcAtChipsetPkg.dec | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/PcAtChipsetPkg/PcAtChipsetPkg.dec b/PcAtChipsetPkg/PcAtChipsetPkg.dec new file mode 100644 index 0000000000..81750c6968 --- /dev/null +++ b/PcAtChipsetPkg/PcAtChipsetPkg.dec @@ -0,0 +1,47 @@ +#/** @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 } }
+
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