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| author | Ruiyu Ni <ruiyu.ni@intel.com> | 2018-05-25 16:29:48 +0800 |
|---|---|---|
| committer | Ruiyu Ni <ruiyu.ni@intel.com> | 2018-05-28 14:49:29 +0800 |
| commit | 36dd3c781e204a97d548ce3595ef6f6b6337bc1f (patch) | |
| tree | 8d1fa93bf276f4eee8091df427134fba3b9d6680 /PcAtChipsetPkg/PcAtChipsetPkg.dec | |
| parent | 5a57246eab80f00ae2481970d12a2abc345a2730 (diff) | |
| download | edk2-36dd3c781e204a97d548ce3595ef6f6b6337bc1f.tar.gz edk2-36dd3c781e204a97d548ce3595ef6f6b6337bc1f.tar.bz2 edk2-36dd3c781e204a97d548ce3595ef6f6b6337bc1f.zip | |
PcAtChipsetPkg/PcRtc: Add two new PCD for RTC Index/Target registers
In certain HW implementation, the BIT7 of RTC Index register(0x70) is
for NMI sources enable/disable but the BIT7 of 0x70 cannot be read
before writing. Software which doesn't want to change the NMI sources
enable/disable setting can write to the alias register 0x74, through
which only BIT0 ~ BIT6 of 0x70 is modified.
So two new PCDs are added so that platform can have the flexibility
to change the default RTC register addresses from 0x70/0x71 to
0x74/0x75.
With the new PCDs added, it can also support special HW that provides
RTC storage in a different register pairs.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Diffstat (limited to 'PcAtChipsetPkg/PcAtChipsetPkg.dec')
| -rw-r--r-- | PcAtChipsetPkg/PcAtChipsetPkg.dec | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/PcAtChipsetPkg/PcAtChipsetPkg.dec b/PcAtChipsetPkg/PcAtChipsetPkg.dec index f11d2045a4..ace7fb7e88 100644 --- a/PcAtChipsetPkg/PcAtChipsetPkg.dec +++ b/PcAtChipsetPkg/PcAtChipsetPkg.dec @@ -4,7 +4,7 @@ # This package is designed to public interfaces and implementation which follows
# PcAt defacto standard.
#
-# Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
#
# This program and the accompanying materials
@@ -194,5 +194,13 @@ # @Prompt Initial value for Register_D in RTC.
gPcAtChipsetPkgTokenSpaceGuid.PcdInitialValueRtcRegisterD|0x00|UINT8|0x0000001D
+ ## Specifies RTC Index Register address in I/O space.
+ # @Prompt RTC Index Register address
+ gPcAtChipsetPkgTokenSpaceGuid.PcdRtcIndexRegister|0x70|UINT8|0x0000001E
+
+ ## Specifies RTC Target Register address in I/O space.
+ # @Prompt RTC Target Register address
+ gPcAtChipsetPkgTokenSpaceGuid.PcdRtcTargetRegister|0x71|UINT8|0x0000001F
+
[UserExtensions.TianoCore."ExtraFiles"]
PcAtChipsetPkgExtra.uni
|