This library provides interfaces such as
real-time clock initialization
to get time and setting time.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4054
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Chao Li <lichao@loongson.cn>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
---
.../LsRealTimeClockLib/LsRealTimeClock.h | 40 +++
.../LsRealTimeClockLib/LsRealTimeClockLib.c | 335 ++++++++++++++++++
.../LsRealTimeClockLib/LsRealTimeClockLib.inf | 44 +++
3 files changed, 419 insertions(+)
create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h
create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c
create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h
new file mode 100644
index 0000000000..6567ec80db
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h
@@ -0,0 +1,40 @@
+/** @file
+ Implement EFI RealTimeClock runtime services via RTC Lib.
+
+ Copyright (c) 2022, Loongson Limited. All rights reserved.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef LS_REAL_TIME_CLOCK_H_
+#define LS_REAL_TIME_CLOCK_H_
+
+#define TOY_WRITE0_REG 0x24
+#define TOY_WRITE1_REG 0x28
+#define TOY_READ0_REG 0x2c
+#define TOY_READ1_REG 0x30
+#define RTC_CTRL_REG 0x40
+
+/* TOY Enable bits */
+#define RTC_ENABLE_BIT (1UL << 13)
+#define TOY_ENABLE_BIT (1UL << 11)
+#define OSC_ENABLE_BIT (1UL << 8)
+
+/*
+ * shift bits and filed mask
+ */
+#define TOY_MON_MASK 0x3f
+#define TOY_DAY_MASK 0x1f
+#define TOY_HOUR_MASK 0x1f
+#define TOY_MIN_MASK 0x3f
+#define TOY_SEC_MASK 0x3f
+#define TOY_MSEC_MASK 0xf
+
+#define TOY_MON_SHIFT 26
+#define TOY_DAY_SHIFT 21
+#define TOY_HOUR_SHIFT 16
+#define TOY_MIN_SHIFT 10
+#define TOY_SEC_SHIFT 4
+
+#endif // LS_REAL_TIME_CLOCK_H_
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c
new file mode 100644
index 0000000000..dc651ccaaf
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c
@@ -0,0 +1,335 @@
+/** @file
+ Implement EFI RealTimeClock runtime services via RTC Lib.
+
+ Copyright (c) 2022, Loongson Limited. All rights reserved.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi.h>
+#include <PiDxe.h>
+
+#include <Guid/EventGroup.h>
+#include <Guid/GlobalVariable.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DxeServicesTableLib.h>
+#include <Library/IoLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+#include <Library/RealTimeClockLib.h>
+#include <Library/TimeBaseLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/UefiRuntimeLib.h>
+#include <Protocol/RealTimeClock.h>
+#include "LsRealTimeClock.h"
+
+STATIC BOOLEAN mInitialized = FALSE;
+STATIC EFI_EVENT mRtcVirtualAddrChangeEvent;
+STATIC UINTN mRtcBase = 0x100d0100;
+/*
+ Enable Real-time clock.
+
+ @param VOID
+
+ @retval VOID
+ */
+VOID
+InitRtc (
+ VOID
+ )
+{
+ UINTN Val;
+
+ if (!mInitialized) {
+ /* enable rtc */
+ Val = MmioRead32 (mRtcBase + RTC_CTRL_REG);
+ Val |= TOY_ENABLE_BIT | OSC_ENABLE_BIT;
+ MmioWrite32 (mRtcBase + RTC_CTRL_REG, Val);
+ mInitialized = TRUE;
+ }
+}
+
+/**
+ 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
+ )
+{
+ UINT32 Val;
+
+ // Ensure Time is a valid pointer
+ if (Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ InitRtc ();
+ Val = MmioRead32 (mRtcBase + TOY_READ1_REG);
+ Time->Year = Val + 1900;
+
+ Val = MmioRead32 (mRtcBase + TOY_READ0_REG);
+ Time->Month = (Val >> TOY_MON_SHIFT) & TOY_MON_MASK;
+ Time->Day = (Val >> TOY_DAY_SHIFT) & TOY_DAY_MASK;
+ Time->Hour = (Val >> TOY_HOUR_SHIFT) & TOY_HOUR_MASK;
+ Time->Minute = (Val >> TOY_MIN_SHIFT) & TOY_MIN_MASK;
+ Time->Second = (Val >> TOY_SEC_SHIFT) & TOY_SEC_MASK;
+ Time->Nanosecond = 0;
+ return EFI_SUCCESS;
+}
+
+/**
+ 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
+ )
+{
+ UINT32 Val;
+
+ // Initialize the hardware if not already done
+ InitRtc ();
+
+ Val = 0;
+ Val |= (Time->Second << TOY_SEC_SHIFT);
+ Val |= (Time->Minute << TOY_MIN_SHIFT);
+ Val |= (Time->Hour << TOY_HOUR_SHIFT);
+ Val |= (Time->Day << TOY_DAY_SHIFT);
+ Val |= (Time->Month << TOY_MON_SHIFT);
+ MmioWrite32 (mRtcBase + TOY_WRITE0_REG, Val);
+
+ Val = Time->Year - 1900;
+ MmioWrite32 (mRtcBase + TOY_WRITE1_REG, Val);
+ return EFI_SUCCESS;
+}
+
+/**
+ 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;
+}
+
+/**
+ 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.
+ //
+ EfiConvertPointer (0x0, (VOID**)&mRtcBase);
+ return;
+}
+
+/** Add the RTC controller address range to the memory map.
+
+ @param [in] ImageHandle The handle to the image.
+ @param [in] RtcPageBase Base address of the RTC controller.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER A parameter is invalid.
+ @retval EFI_NOT_FOUND Flash device not found.
+**/
+EFI_STATUS
+KvmtoolRtcMapMemory (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_PHYSICAL_ADDRESS RtcPageBase
+ )
+{
+ EFI_STATUS Status;
+
+ Status = gDS->AddMemorySpace (
+ EfiGcdMemoryTypeMemoryMappedIo,
+ RtcPageBase,
+ EFI_PAGE_SIZE,
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR, "Failed to add memory space. Status = %r\n",
+ Status
+ ));
+ return Status;
+ }
+
+ Status = gDS->AllocateMemorySpace (
+ EfiGcdAllocateAddress,
+ EfiGcdMemoryTypeMemoryMappedIo,
+ 0,
+ EFI_PAGE_SIZE,
+ &RtcPageBase,
+ ImageHandle,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "Failed to allocate memory space. Status = %r\n",
+ Status
+ ));
+ gDS->RemoveMemorySpace (
+ RtcPageBase,
+ EFI_PAGE_SIZE
+ );
+ return Status;
+ }
+
+ Status = gDS->SetMemorySpaceAttributes (
+ RtcPageBase,
+ EFI_PAGE_SIZE,
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "Failed to set memory attributes. Status = %r\n",
+ Status
+ ));
+
+ gDS->FreeMemorySpace (
+ RtcPageBase,
+ EFI_PAGE_SIZE
+ );
+
+ gDS->RemoveMemorySpace (
+ RtcPageBase,
+ EFI_PAGE_SIZE
+ );
+ }
+
+ return Status;
+}
+
+/**
+ 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;
+
+ Status = KvmtoolRtcMapMemory (ImageHandle, (mRtcBase & ~EFI_PAGE_MASK));
+ if (EFI_ERROR (Status)) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "Failed to map memory for loongson 7A RTC. Status = %r\n",
+ Status
+ ));
+ return Status;
+ }
+
+ // Setup the setters and getters
+ gRT->GetTime = LibGetTime;
+ gRT->SetTime = LibSetTime;
+
+ // Install the protocol
+ Handle = NULL;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiRealTimeClockArchProtocolGuid, NULL,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Register for the virtual address change event
+ //
+ Status = gBS->CreateEventEx (
+ EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ LibRtcVirtualNotifyEvent,
+ NULL,
+ &gEfiEventVirtualAddressChangeGuid,
+ &mRtcVirtualAddrChangeEvent
+ );
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+}
diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf
new file mode 100644
index 0000000000..6f7bf467b9
--- /dev/null
+++ b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf
@@ -0,0 +1,44 @@
+## @file
+#
+# Copyright (c) 2022, Loongson Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = LsRealTimeClockLib
+ FILE_GUID = 9793a3da-1869-4fdf-88b1-c6484341f50b
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = RealTimeClockLib
+
+#
+# VALID_ARCHITECTURES = LOONGARCH64
+#
+
+[Sources]
+ LsRealTimeClockLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+ Platform/Loongson/LoongArchQemuPkg/Loongson.dec
+
+[LibraryClasses]
+ IoLib
+ UefiLib
+ DebugLib
+ PcdLib
+ DxeServicesTableLib
+ UefiRuntimeLib
+
+[Guids]
+ gEfiEventVirtualAddressChangeGuid
+
+[Protocols]
+ gEfiRealTimeClockArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED
+
+[Depex]
+ TRUE
--
2.31.1
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Reviewed-by: Chao Li <lichao@loongson.cn> Thanks, Chao -------- On 11月 11 2022, at 5:12 下午, xianglai li <lixianglai@loongson.cn> wrote: > This library provides interfaces such as > > real-time clock initialization > to get time and setting time. > > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4054 > > > Cc: Bibo Mao <maobibo@loongson.cn> > Cc: Chao Li <lichao@loongson.cn> > Cc: Leif Lindholm <quic_llindhol@quicinc.com> > Cc: Liming Gao <gaoliming@byosoft.com.cn> > Cc: Michael D Kinney <michael.d.kinney@intel.com> > Signed-off-by: xianglai li <lixianglai@loongson.cn> > --- > .../LsRealTimeClockLib/LsRealTimeClock.h | 40 +++ > .../LsRealTimeClockLib/LsRealTimeClockLib.c | 335 ++++++++++++++++++ > .../LsRealTimeClockLib/LsRealTimeClockLib.inf | 44 +++ > 3 files changed, 419 insertions(+) > create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h > create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c > create mode 100644 Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf > > > diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h > new file mode 100644 > index 0000000000..6567ec80db > --- /dev/null > +++ b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClock.h > @@ -0,0 +1,40 @@ > +/** @file > + Implement EFI RealTimeClock runtime services via RTC Lib. > + > + Copyright (c) 2022, Loongson Limited. All rights reserved. > + > + SPDX-License-Identifier: BSD-2-Clause-Patent > + > +**/ > + > +#ifndef LS_REAL_TIME_CLOCK_H_ > +#define LS_REAL_TIME_CLOCK_H_ > + > +#define TOY_WRITE0_REG 0x24 > +#define TOY_WRITE1_REG 0x28 > +#define TOY_READ0_REG 0x2c > +#define TOY_READ1_REG 0x30 > +#define RTC_CTRL_REG 0x40 > + > +/* TOY Enable bits */ > +#define RTC_ENABLE_BIT (1UL << 13) > +#define TOY_ENABLE_BIT (1UL << 11) > +#define OSC_ENABLE_BIT (1UL << 8) > + > +/* > + * shift bits and filed mask > + */ > +#define TOY_MON_MASK 0x3f > +#define TOY_DAY_MASK 0x1f > +#define TOY_HOUR_MASK 0x1f > +#define TOY_MIN_MASK 0x3f > +#define TOY_SEC_MASK 0x3f > +#define TOY_MSEC_MASK 0xf > + > +#define TOY_MON_SHIFT 26 > +#define TOY_DAY_SHIFT 21 > +#define TOY_HOUR_SHIFT 16 > +#define TOY_MIN_SHIFT 10 > +#define TOY_SEC_SHIFT 4 > + > +#endif // LS_REAL_TIME_CLOCK_H_ > diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c > new file mode 100644 > index 0000000000..dc651ccaaf > --- /dev/null > +++ b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.c > @@ -0,0 +1,335 @@ > +/** @file > + Implement EFI RealTimeClock runtime services via RTC Lib. > + > + Copyright (c) 2022, Loongson Limited. All rights reserved. > + > + SPDX-License-Identifier: BSD-2-Clause-Patent > + > +**/ > + > +#include <Uefi.h> > +#include <PiDxe.h> > + > +#include <Guid/EventGroup.h> > +#include <Guid/GlobalVariable.h> > + > +#include <Library/BaseLib.h> > +#include <Library/DebugLib.h> > +#include <Library/DxeServicesTableLib.h> > +#include <Library/IoLib.h> > +#include <Library/MemoryAllocationLib.h> > +#include <Library/PcdLib.h> > +#include <Library/RealTimeClockLib.h> > +#include <Library/TimeBaseLib.h> > +#include <Library/UefiBootServicesTableLib.h> > +#include <Library/UefiRuntimeServicesTableLib.h> > +#include <Library/UefiRuntimeLib.h> > +#include <Protocol/RealTimeClock.h> > +#include "LsRealTimeClock.h" > + > +STATIC BOOLEAN mInitialized = FALSE; > +STATIC EFI_EVENT mRtcVirtualAddrChangeEvent; > +STATIC UINTN mRtcBase = 0x100d0100; > +/* > + Enable Real-time clock. > + > + @param VOID > + > + @retval VOID > + */ > +VOID > +InitRtc ( > + VOID > + ) > +{ > + UINTN Val; > + > + if (!mInitialized) { > + /* enable rtc */ > + Val = MmioRead32 (mRtcBase + RTC_CTRL_REG); > + Val |= TOY_ENABLE_BIT | OSC_ENABLE_BIT; > + MmioWrite32 (mRtcBase + RTC_CTRL_REG, Val); > + mInitialized = TRUE; > + } > +} > + > +/** > + 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 > + ) > +{ > + UINT32 Val; > + > + // Ensure Time is a valid pointer > + if (Time == NULL) { > + return EFI_INVALID_PARAMETER; > + } > + > + InitRtc (); > + Val = MmioRead32 (mRtcBase + TOY_READ1_REG); > + Time->Year = Val + 1900; > + > + Val = MmioRead32 (mRtcBase + TOY_READ0_REG); > + Time->Month = (Val >> TOY_MON_SHIFT) & TOY_MON_MASK; > + Time->Day = (Val >> TOY_DAY_SHIFT) & TOY_DAY_MASK; > + Time->Hour = (Val >> TOY_HOUR_SHIFT) & TOY_HOUR_MASK; > + Time->Minute = (Val >> TOY_MIN_SHIFT) & TOY_MIN_MASK; > + Time->Second = (Val >> TOY_SEC_SHIFT) & TOY_SEC_MASK; > + Time->Nanosecond = 0; > + return EFI_SUCCESS; > +} > + > +/** > + 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 > + ) > +{ > + UINT32 Val; > + > + // Initialize the hardware if not already done > + InitRtc (); > + > + Val = 0; > + Val |= (Time->Second << TOY_SEC_SHIFT); > + Val |= (Time->Minute << TOY_MIN_SHIFT); > + Val |= (Time->Hour << TOY_HOUR_SHIFT); > + Val |= (Time->Day << TOY_DAY_SHIFT); > + Val |= (Time->Month << TOY_MON_SHIFT); > + MmioWrite32 (mRtcBase + TOY_WRITE0_REG, Val); > + > + Val = Time->Year - 1900; > + MmioWrite32 (mRtcBase + TOY_WRITE1_REG, Val); > + return EFI_SUCCESS; > +} > + > +/** > + 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; > +} > + > +/** > + 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. > + // > + EfiConvertPointer (0x0, (VOID**)&mRtcBase); > + return; > +} > + > +/** Add the RTC controller address range to the memory map. > + > + @param [in] ImageHandle The handle to the image. > + @param [in] RtcPageBase Base address of the RTC controller. > + > + @retval EFI_SUCCESS Success. > + @retval EFI_INVALID_PARAMETER A parameter is invalid. > + @retval EFI_NOT_FOUND Flash device not found. > +**/ > +EFI_STATUS > +KvmtoolRtcMapMemory ( > + IN EFI_HANDLE ImageHandle, > + IN EFI_PHYSICAL_ADDRESS RtcPageBase > + ) > +{ > + EFI_STATUS Status; > + > + Status = gDS->AddMemorySpace ( > + EfiGcdMemoryTypeMemoryMappedIo, > + RtcPageBase, > + EFI_PAGE_SIZE, > + EFI_MEMORY_UC | EFI_MEMORY_RUNTIME > + ); > + if (EFI_ERROR (Status)) { > + DEBUG (( > + DEBUG_ERROR, "Failed to add memory space. Status = %r\n", > + Status > + )); > + return Status; > + } > + > + Status = gDS->AllocateMemorySpace ( > + EfiGcdAllocateAddress, > + EfiGcdMemoryTypeMemoryMappedIo, > + 0, > + EFI_PAGE_SIZE, > + &RtcPageBase, > + ImageHandle, > + NULL > + ); > + if (EFI_ERROR (Status)) { > + DEBUG (( > + DEBUG_ERROR, > + "Failed to allocate memory space. Status = %r\n", > + Status > + )); > + gDS->RemoveMemorySpace ( > + RtcPageBase, > + EFI_PAGE_SIZE > + ); > + return Status; > + } > + > + Status = gDS->SetMemorySpaceAttributes ( > + RtcPageBase, > + EFI_PAGE_SIZE, > + EFI_MEMORY_UC | EFI_MEMORY_RUNTIME > + ); > + if (EFI_ERROR (Status)) { > + DEBUG (( > + DEBUG_ERROR, > + "Failed to set memory attributes. Status = %r\n", > + Status > + )); > + > + gDS->FreeMemorySpace ( > + RtcPageBase, > + EFI_PAGE_SIZE > + ); > + > + gDS->RemoveMemorySpace ( > + RtcPageBase, > + EFI_PAGE_SIZE > + ); > + } > + > + return Status; > +} > + > +/** > + 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; > + > + Status = KvmtoolRtcMapMemory (ImageHandle, (mRtcBase & ~EFI_PAGE_MASK)); > + if (EFI_ERROR (Status)) { > + DEBUG (( > + DEBUG_ERROR, > + "Failed to map memory for loongson 7A RTC. Status = %r\n", > + Status > + )); > + return Status; > + } > + > + // Setup the setters and getters > + gRT->GetTime = LibGetTime; > + gRT->SetTime = LibSetTime; > + > + // Install the protocol > + Handle = NULL; > + Status = gBS->InstallMultipleProtocolInterfaces ( > + &Handle, > + &gEfiRealTimeClockArchProtocolGuid, NULL, > + NULL > + ); > + ASSERT_EFI_ERROR (Status); > + > + // > + // Register for the virtual address change event > + // > + Status = gBS->CreateEventEx ( > + EVT_NOTIFY_SIGNAL, > + TPL_NOTIFY, > + LibRtcVirtualNotifyEvent, > + NULL, > + &gEfiEventVirtualAddressChangeGuid, > + &mRtcVirtualAddrChangeEvent > + ); > + ASSERT_EFI_ERROR (Status); > + return Status; > +} > diff --git a/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf > new file mode 100644 > index 0000000000..6f7bf467b9 > --- /dev/null > +++ b/Platform/Loongson/LoongArchQemuPkg/Library/LsRealTimeClockLib/LsRealTimeClockLib.inf > @@ -0,0 +1,44 @@ > +## @file > +# > +# Copyright (c) 2022, Loongson Limited. All rights reserved. > +# > +# SPDX-License-Identifier: BSD-2-Clause-Patent > +# > +## > + > +[Defines] > + INF_VERSION = 0x00010005 > + BASE_NAME = LsRealTimeClockLib > + FILE_GUID = 9793a3da-1869-4fdf-88b1-c6484341f50b > + MODULE_TYPE = BASE > + VERSION_STRING = 1.0 > + LIBRARY_CLASS = RealTimeClockLib > + > +# > +# VALID_ARCHITECTURES = LOONGARCH64 > +# > + > +[Sources] > + LsRealTimeClockLib.c > + > +[Packages] > + MdePkg/MdePkg.dec > + EmbeddedPkg/EmbeddedPkg.dec > + Platform/Loongson/LoongArchQemuPkg/Loongson.dec > + > +[LibraryClasses] > + IoLib > + UefiLib > + DebugLib > + PcdLib > + DxeServicesTableLib > + UefiRuntimeLib > + > +[Guids] > + gEfiEventVirtualAddressChangeGuid > + > +[Protocols] > + gEfiRealTimeClockArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED > + > +[Depex] > + TRUE > -- > 2.31.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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