mirror of https://github.com/acidanthera/audk.git
29ae55a0b8
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3913 The original flow of PcRtcInit() is like: 1. Guarantee atomic accesses to the RTC time registers and read out the value. 2. Program RTC register B. (adopt 12h mode or 24h mode. Current bios code sets RTC to 24h mode by default). 3. Then function ConvertRtcTimeToEfiTime converts the RTC time value to their 24h mode by checking the hour format bit (1:24h mode,0:12h mode). And here lies the problem: Step3 will fail to adjust the value if Step2 already sets RTC to 24h mode. The hour value in 12h mode will not be converted to its 24h mode. The solution is to program RTC register B a little later when all the original RTC registers' value is retrieved, adjusted and validated. ConvertRtcTimeToEfiTime is modified to be more robust. Reviewed-by: Ray Ni <ray.ni@intel.com> Signed-off-by: Zhuoran Chao <zhuoran.chao@intel.com> |
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| .. | ||
| Bus/Pci/IdeControllerDxe | ||
| HpetTimerDxe | ||
| Include | ||
| Library | ||
| PcatRealTimeClockRuntimeDxe | ||
| PcAtChipsetPkg.ci.yaml | ||
| PcAtChipsetPkg.dec | ||
| PcAtChipsetPkg.dsc | ||
| PcAtChipsetPkg.uni | ||
| PcAtChipsetPkgExtra.uni | ||