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PcAtChipsetPkg: Add PCD for RTC default year

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Add PcdRtcDefaultYear to specify the default year to use when
the RTC is in an invalid state. Make sure PcdRtcDefaultYear is
>= PcdMinimalValidYear and <= PcdMaximalValidYear.  Set the
default value for this PCD to PcdMinimalValidYear to preserve
the existing behavior. A platform DSC file can override this
default value setting.

Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
This commit is contained in:
Michael D Kinney
2023-03-25 19:41:38 -07:00
committed by mergify[bot]
parent b1db096575
commit d55d73152e
4 changed files with 13 additions and 2 deletions
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6
PcAtChipsetPkg/PcAtChipsetPkg.dec
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@@ -76,6 +76,12 @@
# @Expression 0x80000001 | gPcAtChipsetPkgTokenSpaceGuid.PcdMaximalValidYear < gPcAtChipsetPkgTokenSpaceGuid.PcdMinimalValidYear + 100
gPcAtChipsetPkgTokenSpaceGuid.PcdMaximalValidYear|2097|UINT16|0x0000000E
## This PCD specifies the RTC default year when the RTC is in an invalid state.
# @Prompt Default year in RTC.
# @Expression 0x80000001 | gPcAtChipsetPkgTokenSpaceGuid.PcdRtcDefaultYear >= gPcAtChipsetPkgTokenSpaceGuid.PcdMinimalValidYear
# @Expression 0x80000001 | gPcAtChipsetPkgTokenSpaceGuid.PcdRtcDefaultYear <= gPcAtChipsetPkgTokenSpaceGuid.PcdMaximalValidYear
gPcAtChipsetPkgTokenSpaceGuid.PcdRtcDefaultYear|gPcAtChipsetPkgTokenSpaceGuid.PcdMinimalValidYear|UINT16|0x0000000F
## Specifies RTC Index Register address in MMIO space.
# @Prompt RTC Index Register address
gPcAtChipsetPkgTokenSpaceGuid.PcdRtcIndexRegister64|0x0|UINT64|0x00000022