[edk2-devel] [PATCH] PcAtChipsetPkg: Wrong System YEAR displayed in SETUP

[Ni, Ray]

Kai,
I created the initial design and made the initial change: using the two PCD to help code decide the correct century value.
More comments below.

> -----Original Message-----
> From: Yau, KaiX <kaix.yau at intel.com>
> Sent: Thursday, May 14, 2020 1:14 AM
> To: Ni, Ray <ray.ni at intel.com>; devel at edk2.groups.io; kaiyau at gmail.com
> Cc: Jiang, Guomin <guomin.jiang at intel.com>; Gao, Liming <liming.gao at intel.com>; Archield, Ralphal
> <ralphal.archield at intel.com>; Zhao, Lijian <lijian.zhao at intel.com>
> Subject: RE: [edk2-devel] [PATCH] PcAtChipsetPkg: Wrong System YEAR displayed in SETUP
> 
> Hi,
> 
> The current logic has two limitations:
> 1. it has to be 100 years apart  (already mentioned in DEC file)
I agree it's a limitation. I don't want to solve this limitation with current RTC HW.

> 2. the century numbers have to be same in order to work. (19XX, 20XX will not work) (20xx, 21xx will not work)
> Since now is 2020, the value has to be 2000, 2099. But BIOS developers does not know this limitation.
I don't agree. Let's forget other argue points and just focus on this point.
Can you please explain why with the PCD value (1998,2097) cannot support this year 2020?


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