Hi Grant > -----Original Message----- > From: arm.ebbr-discuss-boun...@arm.com <arm.ebbr-discuss- > boun...@arm.com> On Behalf Of Grant Likely > Sent: Monday, September 24, 2018 7:24 PM > To: boot-architecture@lists.linaro.org; arm.ebbr-disc...@arm.com > Cc: n...@arm.com > Subject: [Arm.ebbr-discuss] [PATCH 4/7] GetTime()/SetTime() should return > EFI_UNSUPPORTED when unsupported > > UEFI spec is adding ability for all runtime services to return > EFI_UNSUPPORTED if not implemented. Use this return code instead of > EFI_DEVICE_ERROR.
Could we wait to push this patch, until UEFI spec is not updated with this error code. AFAIK, Spec 2.7, Section 8.3 does not have EFI_UNSUPPORTED error. Thanks Udit > Resolves: #14 > Signed-off-by: Grant Likely <grant.lik...@arm.com> > --- > source/chapter2-uefi.rst | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/source/chapter2-uefi.rst b/source/chapter2-uefi.rst index > 6f7d260..239fd8c 100644 > --- a/source/chapter2-uefi.rst > +++ b/source/chapter2-uefi.rst > @@ -151,9 +151,9 @@ it may not be possible to access the RTC from runtime > services. > e.g., The RTC may be on a shared I2C bus which runtime services cannot > access because it will conflict with the OS. > > -Firmware still must provide the UEFI GetTime() and SetTime() runtime service > -calls, but if an RTC isn't present, or cannot be accessed at runtime, then > both - > calls shall return EFI_DEVICE_ERROR. > +If firmware does not support access to the RTC, then GetTime() and > +SetTime() shall return EFI_UNSUPPORTED, and the OS must use a device > +driver to control the RTC. > UEFI Reset and Shutdown > ----------------------- > -- > 2.13.0 > > _______________________________________________ > Arm.ebbr-discuss mailing list > arm.ebbr-disc...@arm.com _______________________________________________ boot-architecture mailing list boot-architecture@lists.linaro.org https://lists.linaro.org/mailman/listinfo/boot-architecture
