Commit Graph

9 Commits

Author SHA1 Message Date
Nhi Pham e31dc4717c EmbeddedPkg/TimeBaseLib: Add function to check Timezone and Daylight
This adds two functions IsValidTimeZone() and IsValidDaylight() to check
the time zone and daylight value from EFI time. These functions are
retrieved from the RealTimeClockRuntimeDxe module as they reduce
duplicated code in RTC modules.

Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Signed-off-by: Nhi Pham <nhi@os.amperecomputing.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
2021-01-07 16:43:48 +00:00
Nhi Pham 48de23e548 EmbeddedPkg/TimeBaseLib: Update comment blocks for API functions
This updates Doxygen comment blocks for API library functions.

Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Signed-off-by: Nhi Pham <nhi@os.amperecomputing.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
2021-01-07 16:43:48 +00:00
Laszlo Ersek c06635ea3f EmbeddedPkg/TimeBaseLib: remove useless truncation to 32-bit
EfiTimeToEpoch() calls EfiGetEpochDays() internally, which (reasonably)
returns a UINTN. But then EfiTimeToEpoch() truncates the EfiGetEpochDays()
retval to UINT32 for no good reason, effectively restricting Time->Year
under 2106.

This truncation was pointed out with a valid warning (= build error) by
VS2019.

Allow EfiTimeToEpoch() to return / propagate a UINTN value.

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20201221113657.6779-3-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
2020-12-21 15:55:16 +00:00
Laszlo Ersek f94345d9ea EmbeddedPkg/TimeBaseLib: remove the SEC_PER_MONTH, SEC_PER_YEAR macros
The SEC_PER_MONTH and SEC_PER_YEAR macros are wrong: they both evaluate to
0 (of type "int"). They are also unused (they could never be used for
division, for example); so remove them. The macros were originally
introduced in commit 0f4386e775 ("ArmPlatformPkg/PL031RealTimeClockLib:
Implement PL031 RTC drive", 2011-06-11).

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Reported-by: Maciej Rabeda <maciej.rabeda@linux.intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200904154541.23340-1-lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
2020-09-08 10:30:28 +00:00
Pete Batard bbb8a81858 EmbeddedPkg/TimeBaseLib: Add macros to get build year/month/day
These can be used, for instance, to automate the population of an SMBIOS
Type 0 BIOS Release Date when building a UEFI firmware (which is how we
plan to use these macros for the Raspberry Pi platform).

These macros should work for any compiler that follows ISO/IEC 9899, but
we add a check for the compiler we have tested to be on the safe side.

Note that we decided against adding a #error or #warn for compilers that
haven't been validated, as we don't want to introduce breakage for people
who may already be using the header with something else than gcc, MSVC or
Clang. Instead, we expect those to send a patch that adds their compiler
to the list, once they have tested the macros there.

Signed-off-by: Pete Batard <pete@akeo.ie>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
2020-08-03 11:58:15 +00:00
Leif Lindholm 1d7571166f EmbeddedPkg: improve TimeBaseLib type safety
EfiTimeToEpoch currently returns a UINTN.
Also, some internal calculations was using UINTN for fixed-width.
Both of these lead to warnings/errors with VS2017.

Replace with appropriate fixed-size types.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=997

Cc: Alexei Fedorov <Alexei.Fedorov@arm.com>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-06-17 12:04:11 +01:00
Michael D Kinney 878b807a43 EmbeddedPkg: Replace BSD License with BSD+Patent License
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2019-04-09 10:57:58 -07:00
Meenakshi Aggarwal 91c31ff04a EmbeddedPkg/TimeBaseLib: Add function to get Week day.
This patch add function EfiTimeToWday() which returns
day of the week.
It is needed by our upcoming patches in edk2-platforms.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2018-06-05 16:18:21 +01:00
Leif Lindholm b489599571 EmbeddedPkg: import EfiTimeBaseLib (as TimeBaseLib)
Some generic RTC helper functions were broken out from the PL031
library for use with other RTCs in OpenPlatformPkg. Import the code back
here, realigning it with the current state of PL031RealTimeClockLib to
simplify comparisons.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2017-05-10 14:28:14 +01:00