Hi Ray,
I read your comment from gitk.
I understand why you changed them to 1998 and 2097.
May I know why we don't read the Century value from CMOS in the beginning?
Some boards does not support? Or the RTC address may be different for
different boards?
Regards
Kai Yau
-----Original Message-----
From: Ni, Ray <ray...@intel.com>
Sent: Wednesday, May 13, 2020 10:55 PM
To: Yau, KaiX <kaix....@intel.com>; devel@edk2.groups.io; kai...@gmail.com
Cc: Jiang, Guomin <guomin.ji...@intel.com>; Gao, Liming <liming....@intel.com>;
Archield, Ralphal <ralphal.archi...@intel.com>; Zhao, Lijian
<lijian.z...@intel.com>
Subject: RE: [edk2-devel] [PATCH] PcAtChipsetPkg: Wrong System YEAR displayed
in SETUP
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....@intel.com>
> Sent: Thursday, May 14, 2020 1:14 AM
> To: Ni, Ray <ray...@intel.com>; devel@edk2.groups.io; kai...@gmail.com
> Cc: Jiang, Guomin <guomin.ji...@intel.com>; Gao, Liming
> <liming....@intel.com>; Archield, Ralphal
> <ralphal.archi...@intel.com>; Zhao, Lijian <lijian.z...@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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