On Mon, Oct 28, 2019 at 09:59:07 +0800, Abner Chang wrote:
> Null instance of Real Time Clock lib for RISC-V platform.
>
> Signed-off-by: Abner Chang <abner.ch...@hpe.com>
>
> Cc: Leif Lindholm <leif.lindh...@linaro.org>
> Cc: Gilbert Chen <gilbert.c...@hpe.com>
Can you drop this one in favour of
EmbeddedPkg/Library/VirtualRealTimeClockLib/
?
/
Leif
> ---
> .../RealTimeClockLibNull/RealTimeClockLibNull.inf | 30 +++
> .../RealTimeClockLibNull/RealTimeClockLibNull.c | 204
> +++++++++++++++++++++
> 2 files changed, 234 insertions(+)
> create mode 100644
> RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.inf
> create mode 100644
> RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.c
>
> diff --git
> a/RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.inf
> b/RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.inf
> new file mode 100644
> index 0000000..b9bffa1
> --- /dev/null
> +++ b/RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.inf
> @@ -0,0 +1,30 @@
> +#/** @file
> +#
> +# Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights
> reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +#**/
> +
> +[Defines]
> + INF_VERSION = 0x0001001b
> + BASE_NAME = RealTimeClockLibNull
> + FILE_GUID = BFC3E25A-8AD0-4201-8A75-F00DE7964370
> + MODULE_TYPE = BASE
> + VERSION_STRING = 1.0
> + LIBRARY_CLASS = RealTimeClockLib
> +
> +[Sources.common]
> + RealTimeClockLibNull.c
> +
> +[Packages]
> + MdePkg/MdePkg.dec
> +
> +[LibraryClasses]
> + UefiLib
> + DebugLib
> +# Use EFiAtRuntime to check stage
> + UefiRuntimeLib
> +
> +[Pcd]
> +
> diff --git
> a/RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.c
> b/RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.c
> new file mode 100644
> index 0000000..904e7e7
> --- /dev/null
> +++ b/RiscVPlatformPkg/Library/RealTimeClockLibNull/RealTimeClockLibNull.c
> @@ -0,0 +1,204 @@
> +/** @file
> + EFI RealTimeClock NULL library
> +
> + Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights
> reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Uefi.h>
> +#include <PiDxe.h>
> +#include <Library/BaseLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/UefiLib.h>
> +// Use EfiAtRuntime to check stage
> +#include <Library/UefiRuntimeLib.h>
> +#include <Library/UefiBootServicesTableLib.h>
> +#include <Library/UefiRuntimeServicesTableLib.h>
> +#include <Protocol/RealTimeClock.h>
> +
> +
> +/**
> + Returns the current time and date information, and the time-keeping
> capabilities
> + of the hardware platform.
> +
> + @param Time A pointer to storage to receive a snapshot
> of the current time.
> + @param Capabilities An optional pointer to a buffer to receive
> the real time clock
> + device's capabilities.
> +
> + @retval EFI_SUCCESS The operation completed successfully.
> + @retval EFI_INVALID_PARAMETER Time is NULL.
> + @retval EFI_DEVICE_ERROR The time could not be retrieved due to
> hardware error.
> + @retval EFI_SECURITY_VIOLATION The time could not be retrieved due to an
> authentication failure.
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibGetTime (
> + OUT EFI_TIME *Time,
> + OUT EFI_TIME_CAPABILITIES *Capabilities
> + )
> +{
> + EFI_STATUS Status = EFI_SUCCESS;
> +
> + return Status;
> +
> +}
> +
> +
> +/**
> + Sets the current local time and date information.
> +
> + @param Time A pointer to the current time.
> +
> + @retval EFI_SUCCESS The operation completed successfully.
> + @retval EFI_INVALID_PARAMETER A time field is out of range.
> + @retval EFI_DEVICE_ERROR The time could not be set due due to
> hardware error.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibSetTime (
> + IN EFI_TIME *Time
> + )
> +{
> +
> + EFI_STATUS Status = EFI_SUCCESS;
> +
> +
> + return Status;
> +}
> +
> +
> +/**
> + Returns the current wakeup alarm clock setting.
> +
> + @param Enabled Indicates if the alarm is currently enabled
> or disabled.
> + @param Pending Indicates if the alarm signal is pending and
> requires acknowledgement.
> + @param Time The current alarm setting.
> +
> + @retval EFI_SUCCESS The alarm settings were returned.
> + @retval EFI_INVALID_PARAMETER Any parameter is NULL.
> + @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due
> to a hardware error.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibGetWakeupTime (
> + OUT BOOLEAN *Enabled,
> + OUT BOOLEAN *Pending,
> + OUT EFI_TIME *Time
> + )
> +{
> + // Not a required feature
> + return EFI_UNSUPPORTED;
> +}
> +
> +
> +/**
> + Sets the system wakeup alarm clock time.
> +
> + @param Enabled Enable or disable the wakeup alarm.
> + @param Time If Enable is TRUE, the time to set the
> wakeup alarm for.
> +
> + @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was
> enabled. If
> + Enable is FALSE, then the wakeup alarm was
> disabled.
> + @retval EFI_INVALID_PARAMETER A time field is out of range.
> + @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a
> hardware error.
> + @retval EFI_UNSUPPORTED A wakeup timer is not supported on this
> platform.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibSetWakeupTime (
> + IN BOOLEAN Enabled,
> + OUT EFI_TIME *Time
> + )
> +{
> + // Not a required feature
> + return EFI_UNSUPPORTED;
> +}
> +
> +
> +
> +/**
> + This is the declaration of an EFI image entry point. This can be the entry
> point to an application
> + written to this specification, an EFI boot service driver, or an EFI
> runtime driver.
> +
> + @param ImageHandle Handle that identifies the loaded image.
> + @param SystemTable System Table for this image.
> +
> + @retval EFI_SUCCESS The operation completed successfully.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +LibRtcInitialize (
> + IN EFI_HANDLE ImageHandle,
> + IN EFI_SYSTEM_TABLE *SystemTable
> + )
> +{
> + EFI_STATUS Status;
> + EFI_HANDLE Handle;
> +
> +
> + EFI_TIME EfiTime;
> +
> + // Setup the setters and getters
> + gRT->GetTime = LibGetTime;
> + gRT->SetTime = LibSetTime;
> + gRT->GetWakeupTime = LibGetWakeupTime;
> + gRT->SetWakeupTime = LibSetWakeupTime;
> +
> +
> + (VOID)gRT->GetTime (&EfiTime, NULL);
> + if((EfiTime.Year < 2015) || (EfiTime.Year > 2099)){
> + EfiTime.Year = 2015;
> + EfiTime.Month = 1;
> + EfiTime.Day = 1;
> + EfiTime.Hour = 0;
> + EfiTime.Minute = 0;
> + EfiTime.Second = 0;
> + EfiTime.Nanosecond = 0;
> + Status = gRT->SetTime(&EfiTime);
> + if (EFI_ERROR(Status))
> + {
> + DEBUG((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", __FUNCTION__,
> __LINE__, Status));
> + }
> + }
> +
> + // Install the protocol
> + Handle = NULL;
> + Status = gBS->InstallMultipleProtocolInterfaces (
> + &Handle,
> + &gEfiRealTimeClockArchProtocolGuid, NULL,
> + NULL
> + );
> +
> + return Status;
> +}
> +
> +
> +/**
> + Fixup internal data so that EFI can be call in virtual mode.
> + Call the passed in Child Notify event and convert any pointers in
> + lib to virtual mode.
> +
> + @param[in] Event The Event that is being processed
> + @param[in] Context Event Context
> +**/
> +VOID
> +EFIAPI
> +LibRtcVirtualNotifyEvent (
> + IN EFI_EVENT Event,
> + IN VOID *Context
> + )
> +{
> + //
> + // Only needed if you are going to support the OS calling RTC functions in
> virtual mode.
> + // You will need to call EfiConvertPointer (). To convert any stored
> physical addresses
> + // to virtual address. After the OS transitions to calling in virtual
> mode, all future
> + // runtime calls will be made in virtual mode.
> + //
> + return;
> +}
> --
> 2.7.4
>
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