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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>
EDK II Project
A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.
Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1
The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:
- AppPkg/Applications/Python/Python-2.7.2/Tools/pybench
- AppPkg/Applications/Python/Python-2.7.2
- AppPkg/Applications/Python/Python-2.7.10
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The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.