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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.uni | |
| 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.uni')
| -rw-r--r-- | PcAtChipsetPkg/PcAtChipsetPkg.uni | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/PcAtChipsetPkg/PcAtChipsetPkg.uni b/PcAtChipsetPkg/PcAtChipsetPkg.uni index 00169ce307..2f62b2610e 100644 --- a/PcAtChipsetPkg/PcAtChipsetPkg.uni +++ b/PcAtChipsetPkg/PcAtChipsetPkg.uni @@ -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>
//
// This program and the accompanying materials
// are licensed and made available under the terms and conditions of the BSD License
@@ -165,3 +165,9 @@ #string STR_gPcAtChipsetPkgTokenSpaceGuid_PcdInitialValueRtcRegisterD_PROMPT #language en-US "Initial value for Register_D in RTC."
#string STR_gPcAtChipsetPkgTokenSpaceGuid_PcdInitialValueRtcRegisterD_HELP #language en-US "Specifies the initial value for Register_D in RTC."
+
+#string STR_gPcAtChipsetPkgTokenSpaceGuid_PcdRtcIndexRegister_PROMPT #language en-US "RTC Index Register address"
+#string STR_gPcAtChipsetPkgTokenSpaceGuid_PcdRtcIndexRegister_HELP #language en-US "Specifies RTC Index Register address in I/O space."
+
+#string STR_gPcAtChipsetPkgTokenSpaceGuid_PcdRtcTargetRegister_PROMPT #language en-US "RTC Target Register address"
+#string STR_gPcAtChipsetPkgTokenSpaceGuid_PcdRtcTargetRegister_HELP #language en-US "Specifies RTC Target Register address in I/O space."
|