* [PATCH 11/15] [platforms/devel-riscv]: U500Pkg/Library: Library instances of U500 platform library.
@ 2019-08-27 6:26 Chen, Gilbert
0 siblings, 0 replies; only message in thread
From: Chen, Gilbert @ 2019-08-27 6:26 UTC (permalink / raw)
To: devel@edk2.groups.io; +Cc: Chen, Gilbert
PeiCoreInfoHobLib
- This is the library to create RISC-V core characteristics for building up RISC-V related SMBIOS records to support the unified boot loader and OS image.
- RiscVPlatformTimerLib
This is U500 platform timer library which has the platform-specific timer implementation.
- SerialPortLib
U500 serial port platform library
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gilbert Chen <gilbert.chen@hpe.com>
---
.../Library/PeiCoreInfoHobLib/CoreInfoHob.c | 201 +++++++++++++++++
.../PeiCoreInfoHobLib/PeiCoreInfoHobLib.inf | 64 ++++++
.../RiscVPlatformTimerLib.inf | 46 ++++
.../RiscVPlatformTimerLib/RiscVPlatformTimerLib.s | 54 +++++
.../U500Pkg/Library/SerialIoLib/SerialIoLib.inf | 37 +++
.../U500Pkg/Library/SerialIoLib/SerialPortLib.c | 247 +++++++++++++++++++++
.../Library/SerialIoLib/U500SerialPortLib.uni | 22 ++
7 files changed, 671 insertions(+)
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/CoreInfoHob.c
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/PeiCoreInfoHobLib.inf
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.inf
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.s
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialIoLib.inf
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialPortLib.c
create mode 100644 Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/U500SerialPortLib.uni
diff --git a/Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/CoreInfoHob.c b/Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/CoreInfoHob.c
new file mode 100644
index 0000000..2db4fdc
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/CoreInfoHob.c
@@ -0,0 +1,201 @@
+/**@file
+ Build up platform processor information.
+
+ Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+//
+// The package level header files this module uses
+//
+#include <PiPei.h>
+
+//
+// The Library classes this module consumes
+//
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/BaseMemoryLib.h>
+
+#include <SmbiosProcessorSpecificData.h>
+#include <ProcessorSpecificDataHob.h>
+#include <SiFiveU5MCCoreplex.h>
+#include <Library/SiFiveE51.h>
+#include <Library/SiFiveU54.h>
+
+/**
+ Build up processor-specific HOB for U5MC Coreplex
+
+ @param UniqueId Unique ID of this U5MC Coreplex processor
+
+ @return EFI_SUCCESS The PEIM initialized successfully.
+
+**/
+EFI_STATUS
+EFIAPI
+CreateU5MCCoreplexProcessorSpecificDataHob (
+ IN UINTN UniqueId
+ )
+{
+ EFI_STATUS Status;
+ UINT32 HartIdNumber;
+ RISC_V_PROCESSOR_SPECIFIC_DATA_HOB *GuidHobData;
+ EFI_GUID *ParentCoreGuid;
+ BOOLEAN MCSupport;
+
+ DEBUG ((EFI_D_INFO, "Building U5 Coreplex processor information HOB\n"));
+
+ HartIdNumber = 0;
+ ParentCoreGuid = PcdGetPtr(PcdSiFiveU5MCCoreplexGuid);
+ MCSupport = PcdGetBool (PcdE5MCSupported);
+ if (MCSupport == TRUE) {
+ Status = CreateE51CoreProcessorSpecificDataHob (ParentCoreGuid, UniqueId, HartIdNumber, FALSE, &GuidHobData);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "Faile to build U5MC processor informatino HOB\n"));
+ ASSERT (FALSE);
+ }
+ HartIdNumber ++;
+ DEBUG ((EFI_D_INFO, "Support E5 Monitor core on U500 platform, HOB at address 0x%x\n", GuidHobData));
+ }
+ for (; HartIdNumber < (FixedPcdGet32 (PcdNumberofU5Cores) + (UINT32)MCSupport); HartIdNumber ++) {
+ Status = CreateU54CoreProcessorSpecificDataHob (ParentCoreGuid, UniqueId, HartIdNumber, (HartIdNumber == FixedPcdGet32 (PcdBootHartId))? TRUE: FALSE, &GuidHobData);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "Faile to build U5MC processor informatino HOB\n"));
+ ASSERT (FALSE);
+ }
+ DEBUG ((EFI_D_INFO, "Support U5 application core on U500 platform, HOB Data at address 0x%x\n", GuidHobData));
+ }
+ DEBUG ((EFI_D_INFO, "Support %d U5 application cores on U500 platform\n", HartIdNumber - (UINT32)MCSupport));
+
+ if (HartIdNumber != FixedPcdGet32 (PcdHartCount)) {
+ DEBUG ((EFI_D_ERROR, "Improper core settings...\n"));
+ DEBUG ((EFI_D_ERROR, " PcdHartCount\n"));
+ DEBUG ((EFI_D_ERROR, " PcdNumberofU5Cores\n"));
+ DEBUG ((EFI_D_ERROR, " PcdE5MCSupported\n\n"));
+ ASSERT (FALSE);
+ }
+ return Status;
+}
+
+/**
+ Function to build processor related SMBIOS information. RISC-V SMBIOS DXE driver collect
+ this information and build SMBIOS Type4 and Type7 record.
+
+ @param ProcessorUid Unique ID of pysical processor which owns this core.
+ @param SmbiosHobPtr Pointer to receive RISC_V_PROCESSOR_SMBIOS_DATA_HOB. The pointers
+ maintained in this structure is only valid before memory is discovered.
+ Access to those pointers after memory is installed will cause unexpected issues.
+
+ @return EFI_SUCCESS The PEIM initialized successfully.
+
+**/
+EFI_STATUS
+EFIAPI
+CreateU5MCProcessorSmbiosDataHob (
+ IN UINTN ProcessorUid,
+ OUT RISC_V_PROCESSOR_SMBIOS_DATA_HOB **SmbiosHobPtr
+ )
+{
+ EFI_GUID *GuidPtr;
+ RISC_V_PROCESSOR_TYPE4_DATA_HOB ProcessorDataHob;
+ RISC_V_PROCESSOR_TYPE7_DATA_HOB L2CacheDataHob;
+ RISC_V_PROCESSOR_SMBIOS_DATA_HOB SmbiosDataHob;
+ RISC_V_PROCESSOR_TYPE4_DATA_HOB *ProcessorDataHobPtr;
+ RISC_V_PROCESSOR_TYPE7_DATA_HOB *L2CacheDataHobPtr;
+ RISC_V_PROCESSOR_SMBIOS_DATA_HOB *SmbiosDataHobPtr;
+
+ DEBUG ((EFI_D_INFO, "%a: Entry\n", __FUNCTION__));
+
+ if (SmbiosHobPtr == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Build up SMBIOS type 7 L2 cache record.
+ //
+ ZeroMem((VOID *)&L2CacheDataHob, sizeof (RISC_V_PROCESSOR_TYPE7_DATA_HOB));
+ L2CacheDataHob.PrcessorGuid = *((EFI_GUID *)PcdGetPtr (PcdSiFiveU5MCCoreplexGuid));
+ L2CacheDataHob.ProcessorUid = ProcessorUid;
+ L2CacheDataHob.SmbiosType7Cache.SocketDesignation = TO_BE_FILLED_BY_VENDOR;
+ L2CacheDataHob.SmbiosType7Cache.CacheConfiguration = RISC_V_CACHE_CONFIGURATION_CACHE_LEVEL_2 | \
+ RISC_V_CACHE_CONFIGURATION_LOCATION_EXTERNAL | \
+ RISC_V_CACHE_CONFIGURATION_ENABLED | \
+ RISC_V_CACHE_CONFIGURATION_MODE_UNKNOWN;
+ L2CacheDataHob.SmbiosType7Cache.MaximumCacheSize = TO_BE_FILLED_BY_VENDOR;
+ L2CacheDataHob.SmbiosType7Cache.InstalledSize = TO_BE_FILLED_BY_VENDOR;
+ L2CacheDataHob.SmbiosType7Cache.SupportedSRAMType.Unknown = 1;
+ L2CacheDataHob.SmbiosType7Cache.CurrentSRAMType.Unknown = 1;
+ L2CacheDataHob.SmbiosType7Cache.CacheSpeed = TO_BE_FILLED_BY_VENDOR;
+ L2CacheDataHob.SmbiosType7Cache.ErrorCorrectionType = TO_BE_FILLED_BY_VENDOR;
+ L2CacheDataHob.SmbiosType7Cache.SystemCacheType = CacheTypeUnified;
+ L2CacheDataHob.SmbiosType7Cache.Associativity = TO_BE_FILLED_BY_VENDOR;
+ GuidPtr = (EFI_GUID *)PcdGetPtr (PcdProcessorSmbiosType7GuidHobGuid);
+ L2CacheDataHobPtr = (RISC_V_PROCESSOR_TYPE7_DATA_HOB *)BuildGuidDataHob (GuidPtr, (VOID *)&L2CacheDataHob, sizeof (RISC_V_PROCESSOR_TYPE7_DATA_HOB));
+ if (L2CacheDataHobPtr == NULL) {
+ DEBUG ((EFI_D_ERROR, "Fail to create GUID HOB of SiFive U5 MC Coreplex L2 cache RISC_V_PROCESSOR_TYPE7_DATA_HOB.\n"));
+ ASSERT (FALSE);
+ }
+
+ //
+ // Build up SMBIOS type 4 record.
+ //
+ ZeroMem((VOID *)&ProcessorDataHob, sizeof (RISC_V_PROCESSOR_TYPE4_DATA_HOB));
+ ProcessorDataHob.PrcessorGuid = *((EFI_GUID *)PcdGetPtr (PcdSiFiveU5MCCoreplexGuid));
+ ProcessorDataHob.ProcessorUid = ProcessorUid;
+ ProcessorDataHob.SmbiosType4Processor.Socket = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.ProcessorType = CentralProcessor;
+ ProcessorDataHob.SmbiosType4Processor.ProcessorFamily = ProcessorFamilyIndicatorFamily2;
+ ProcessorDataHob.SmbiosType4Processor.ProcessorManufacture = TO_BE_FILLED_BY_VENDOR;
+ SetMem ((VOID *)&ProcessorDataHob.SmbiosType4Processor.ProcessorId, sizeof (PROCESSOR_ID_DATA), TO_BE_FILLED_BY_CODE);
+ ProcessorDataHob.SmbiosType4Processor.ProcessorVersion = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.Voltage.ProcessorVoltageCapability3_3V = 1;
+ ProcessorDataHob.SmbiosType4Processor.ExternalClock = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.MaxSpeed = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.CurrentSpeed = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.Status = TO_BE_FILLED_BY_CODE;
+ ProcessorDataHob.SmbiosType4Processor.ProcessorUpgrade = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.L1CacheHandle = TO_BE_FILLED_BY_RISC_V_SMBIOS_DXE_DRIVER;
+ ProcessorDataHob.SmbiosType4Processor.L2CacheHandle = TO_BE_FILLED_BY_RISC_V_SMBIOS_DXE_DRIVER;
+ ProcessorDataHob.SmbiosType4Processor.L3CacheHandle = 0xffff;
+ ProcessorDataHob.SmbiosType4Processor.SerialNumber = TO_BE_FILLED_BY_CODE;
+ ProcessorDataHob.SmbiosType4Processor.AssetTag = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.PartNumber = TO_BE_FILLED_BY_VENDOR;
+ ProcessorDataHob.SmbiosType4Processor.CoreCount = (UINT8)FixedPcdGet32 (PcdNumberofU5Cores) + (UINT8)PcdGetBool (PcdE5MCSupported);
+ ProcessorDataHob.SmbiosType4Processor.EnabledCoreCount = (UINT8)FixedPcdGet32 (PcdNumberofU5Cores) + (UINT8)PcdGetBool (PcdE5MCSupported);
+ ProcessorDataHob.SmbiosType4Processor.ThreadCount = (UINT8)FixedPcdGet32 (PcdNumberofU5Cores) + (UINT8)PcdGetBool (PcdE5MCSupported);
+ ProcessorDataHob.SmbiosType4Processor.ProcessorCharacteristics = (UINT16)(1 << 2); // 64-bit capable
+ ProcessorDataHob.SmbiosType4Processor.ProcessorFamily2 = ProcessorFamilyRiscVRV64;
+ ProcessorDataHob.SmbiosType4Processor.CoreCount2 = 0;
+ ProcessorDataHob.SmbiosType4Processor.EnabledCoreCount2 = 0;
+ ProcessorDataHob.SmbiosType4Processor.ThreadCount2 = 0;
+ GuidPtr = (EFI_GUID *)PcdGetPtr (PcdProcessorSmbiosType4GuidHobGuid);
+ ProcessorDataHobPtr = (RISC_V_PROCESSOR_TYPE4_DATA_HOB *)BuildGuidDataHob (GuidPtr, (VOID *)&ProcessorDataHob, sizeof (RISC_V_PROCESSOR_TYPE4_DATA_HOB));
+ if (ProcessorDataHobPtr == NULL) {
+ DEBUG ((EFI_D_ERROR, "Fail to create GUID HOB of SiFive U5MC Coreplex RISC_V_PROCESSOR_TYPE4_DATA_HOB.\n"));
+ ASSERT (FALSE);
+ }
+
+ ZeroMem((VOID *)&SmbiosDataHob, sizeof (RISC_V_PROCESSOR_SMBIOS_DATA_HOB));
+ SmbiosDataHob.Processor = ProcessorDataHobPtr;
+ SmbiosDataHob.L1InstCache = NULL;
+ SmbiosDataHob.L1DataCache = NULL;
+ SmbiosDataHob.L2Cache = L2CacheDataHobPtr;
+ SmbiosDataHob.L3Cache = NULL;
+ GuidPtr = (EFI_GUID *)PcdGetPtr (PcdProcessorSmbiosGuidHobGuid);
+ SmbiosDataHobPtr = (RISC_V_PROCESSOR_SMBIOS_DATA_HOB *)BuildGuidDataHob (GuidPtr, (VOID *)&SmbiosDataHob, sizeof (RISC_V_PROCESSOR_SMBIOS_DATA_HOB));
+ if (SmbiosDataHobPtr == NULL) {
+ DEBUG ((EFI_D_ERROR, "Fail to create GUID HOB of SiFive U5MC Coreplex RISC_V_PROCESSOR_SMBIOS_DATA_HOB.\n"));
+ ASSERT (FALSE);
+ }
+ *SmbiosHobPtr = SmbiosDataHobPtr;
+ DEBUG ((EFI_D_INFO, "%a: Exit\n", __FUNCTION__));
+ return EFI_SUCCESS;
+}
diff --git a/Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/PeiCoreInfoHobLib.inf b/Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/PeiCoreInfoHobLib.inf
new file mode 100644
index 0000000..716d0bb
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Library/PeiCoreInfoHobLib/PeiCoreInfoHobLib.inf
@@ -0,0 +1,64 @@
+## @file
+# Library instance to create core information HOB
+#
+# Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = SiliconSiFiveU5MCCoreplexInfoLib
+ FILE_GUID = 4E397A71-5164-4E69-9884-70CBE2740AAB
+ MODULE_TYPE = PEIM
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = SiliconSiFiveU5MCCoreplexInfoLib
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = RISCV
+#
+
+[Sources]
+ CoreInfoHob.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ Platform/RiscV/RiscVPlatformPkg.dec
+ Platform/RiscV/SiFive/U500Pkg/U500.dec
+ Silicon/SiFive/SiFive.dec
+ RiscVPkg/RiscVPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ PcdLib
+ MemoryAllocationLib
+ PrintLib
+ SiliconSiFiveE51CoreInfoLib
+ SiliconSiFiveU54CoreInfoLib
+
+[Guids]
+ gUefiRiscVPlatformU500PkgTokenSpaceGuid
+
+[Ppis]
+
+[FixedPcd]
+ gUefiRiscVPkgTokenSpaceGuid.PcdProcessorSmbiosGuidHobGuid
+ gUefiRiscVPkgTokenSpaceGuid.PcdProcessorSmbiosType4GuidHobGuid
+ gUefiRiscVPkgTokenSpaceGuid.PcdProcessorSmbiosType7GuidHobGuid
+ gEfiSiFiveSiliconSpaceGuid.PcdSiFiveU54CoreGuid
+ gEfiSiFiveSiliconSpaceGuid.PcdSiFiveE51CoreGuid
+ gEfiSiFiveSiliconSpaceGuid.PcdSiFiveU5MCCoreplexGuid
+ gUefiRiscVPlatformU500PkgTokenSpaceGuid.PcdNumberofU5Cores
+ gUefiRiscVPlatformU500PkgTokenSpaceGuid.PcdE5MCSupported
+ gUefiRiscVPlatformPkgTokenSpaceGuid.PcdHartCount
+ gUefiRiscVPlatformPkgTokenSpaceGuid.PcdBootHartId
diff --git a/Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.inf b/Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.inf
new file mode 100644
index 0000000..d1553da
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.inf
@@ -0,0 +1,46 @@
+## @file
+# RISC-V CPU lib to override timer mechanism for U500 platform.
+#
+# Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+# Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+#
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = RiscVPlatformTimerLib
+ FILE_GUID = AFA75BBD-DE9D-4E77-BD88-1EA401BE931D
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = RiscVPlatformTimerLib
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = RISCV32 RISCV64
+#
+
+[Sources]
+
+[Sources.RISCV32]
+ RiscVPlatformTimerLib.s
+
+[Sources.RISCV64]
+ RiscVPlatformTimerLib.s
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ RiscVPkg/RiscVPkg.dec
+ Platform/RiscV/SiFive/U500Pkg/U500.dec
+
+
diff --git a/Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.s b/Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.s
new file mode 100644
index 0000000..fd22466
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Library/RiscVPlatformTimerLib/RiscVPlatformTimerLib.s
@@ -0,0 +1,54 @@
+//------------------------------------------------------------------------------
+//
+// SiFive U500 Timer CSR functions.
+//
+// Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php.
+//
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+//------------------------------------------------------------------------------
+#include <Base.h>
+#include <RiscV.h>
+#include <U500Clint.h>
+
+.data
+
+.text
+.align 3
+
+.global ASM_PFX(RiscVReadMachineTimer)
+.global ASM_PFX(RiscVSetMachineTimerCmp)
+.global ASM_PFX(RiscVReadMachineTimerCmp)
+
+//
+// Read machine timer CSR.
+// @retval a0 : 64-bit machine timer.
+//
+ASM_PFX (RiscVReadMachineTimer):
+ li t1, CLINT_REG_MTIME
+ ld a0, (t1)
+ ret
+
+//
+// Set machine timer compare CSR.
+// @param a0 : UINT64
+//
+ASM_PFX (RiscVSetMachineTimerCmp):
+ li t1, CLINT_REG_MTIMECMP0
+ sd a0, (t1)
+ ret
+
+//
+// Read machine timer compare CSR.
+// @param a0 : UINT64
+//
+ASM_PFX (RiscVReadMachineTimerCmp):
+ li t1, CLINT_REG_MTIMECMP0
+ ld a0, (t1)
+ ret
diff --git a/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialIoLib.inf b/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialIoLib.inf
new file mode 100644
index 0000000..6245484
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialIoLib.inf
@@ -0,0 +1,37 @@
+## @file
+# Library instance for SerialIo library class
+#
+# Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+# Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = U500SerialPortLib
+ MODULE_UNI_FILE = U500SerialPortLib.uni
+ FILE_GUID = FCC4FD2B-2FF6-4FFA-B363-7C1111E5DCE9
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = SerialPortLib
+
+[Packages]
+ MdePkg/MdePkg.dec
+ RiscVPkg/RiscVPkg.dec
+ Platform/RiscV/RiscVPlatformPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ IoLib
+ RiscVOpensbiLib
+
+[Sources]
+ SerialPortLib.c
+
diff --git a/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialPortLib.c b/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialPortLib.c
new file mode 100644
index 0000000..84475fe
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/SerialPortLib.c
@@ -0,0 +1,247 @@
+/** @file
+ UART Serial Port library functions
+
+ Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+ Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Base.h>
+#include <Library/IoLib.h>
+#include <Library/SerialPortLib.h>
+#include <sbi_utils/serial/sifive-uart.h>
+
+#define REG32(p, i) ((p)[(i) >> 2])
+
+//---------------------------------------------
+// UART Register Offsets
+//---------------------------------------------
+
+#define UART_REG_IP 0x14
+ #define UART_IP_RXWM 0x02
+
+//---------------------------------------------
+// UART Settings
+//---------------------------------------------
+
+#define U500_UART_ADDR 0x54000000
+#define U500_UART_BAUDRATE 115200
+#define U500_SYS_CLK 100000000
+
+/**
+ Initialize the serial device hardware.
+
+ If no initialization is required, then return RETURN_SUCCESS.
+ If the serial device was successfuly initialized, then return RETURN_SUCCESS.
+ If the serial device could not be initialized, then return RETURN_DEVICE_ERROR.
+
+ @retval RETURN_SUCCESS The serial device was initialized.
+ @retval RETURN_DEVICE_ERROR The serail device could not be initialized.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortInitialize (
+ VOID
+ )
+{
+ if (sifive_uart_init (U500_UART_ADDR, U500_SYS_CLK/2, U500_UART_BAUDRATE) != 0) {
+ return EFI_DEVICE_ERROR;
+ }
+ return RETURN_SUCCESS;
+}
+
+/**
+ Write data from buffer to serial device.
+
+ Writes NumberOfBytes data bytes from Buffer to the serial device.
+ The number of bytes actually written to the serial device is returned.
+ If the return value is less than NumberOfBytes, then the write operation failed.
+
+ If Buffer is NULL, then ASSERT().
+
+ If NumberOfBytes is zero, then return 0.
+
+ @param Buffer Pointer to the data buffer to be written.
+ @param NumberOfBytes Number of bytes to written to the serial device.
+
+ @retval 0 NumberOfBytes is 0.
+ @retval >0 The number of bytes written to the serial device.
+ If this value is less than NumberOfBytes, then the write operation failed.
+
+**/
+UINTN
+EFIAPI
+SerialPortWrite (
+ IN UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+ )
+{
+ UINTN i;
+
+ if (Buffer == NULL) {
+ return 0;
+ }
+
+ for(i=0; i < NumberOfBytes; i++) {
+ sifive_uart_putc (Buffer[i]);
+ }
+
+ return i;
+}
+
+
+/**
+ Reads data from a serial device into a buffer.
+
+ @param Buffer Pointer to the data buffer to store the data read from the serial device.
+ @param NumberOfBytes Number of bytes to read from the serial device.
+
+ @retval 0 NumberOfBytes is 0.
+ @retval >0 The number of bytes read from the serial device.
+ If this value is less than NumberOfBytes, then the read operation failed.
+
+**/
+UINTN
+EFIAPI
+SerialPortRead (
+ OUT UINT8 *Buffer,
+ IN UINTN NumberOfBytes
+ )
+{
+ UINTN i;
+
+ if (NULL == Buffer) {
+ return 0;
+ }
+
+ for(i=0; i < NumberOfBytes; i++) {
+ Buffer[i] = (UINT8)sifive_uart_getc ();
+ }
+
+ return i;
+}
+
+/**
+ Polls a serial device to see if there is any data waiting to be read.
+
+ Polls aserial device to see if there is any data waiting to be read.
+ If there is data waiting to be read from the serial device, then TRUE is returned.
+ If there is no data waiting to be read from the serial device, then FALSE is returned.
+
+ @retval TRUE Data is waiting to be read from the serial device.
+ @retval FALSE There is no data waiting to be read from the serial device.
+
+**/
+BOOLEAN
+EFIAPI
+SerialPortPoll (
+ VOID
+ )
+{
+ static volatile UINT32 * const uart = (void *)(U500_UART_ADDR);
+ UINT32 ip;
+
+ ip = REG32(uart, UART_REG_IP);
+ if(ip & UART_IP_RXWM) {
+ return TRUE;
+ }
+ else {
+ return FALSE;
+ }
+}
+
+/**
+ Sets the control bits on a serial device.
+
+ @param Control Sets the bits of Control that are settable.
+
+ @retval RETURN_SUCCESS The new control bits were set on the serial device.
+ @retval RETURN_UNSUPPORTED The serial device does not support this operation.
+ @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortSetControl (
+ IN UINT32 Control
+ )
+{
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Retrieve the status of the control bits on a serial device.
+
+ @param Control A pointer to return the current control signals from the serial device.
+
+ @retval RETURN_SUCCESS The control bits were read from the serial device.
+ @retval RETURN_UNSUPPORTED The serial device does not support this operation.
+ @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortGetControl (
+ OUT UINT32 *Control
+ )
+{
+ *Control = 0;
+ return RETURN_SUCCESS;
+}
+
+/**
+ Sets the baud rate, receive FIFO depth, transmit/receice time out, parity,
+ data bits, and stop bits on a serial device.
+
+ @param BaudRate The requested baud rate. A BaudRate value of 0 will use the
+ device's default interface speed.
+ On output, the value actually set.
+ @param ReveiveFifoDepth The requested depth of the FIFO on the receive side of the
+ serial interface. A ReceiveFifoDepth value of 0 will use
+ the device's default FIFO depth.
+ On output, the value actually set.
+ @param Timeout The requested time out for a single character in microseconds.
+ This timeout applies to both the transmit and receive side of the
+ interface. A Timeout value of 0 will use the device's default time
+ out value.
+ On output, the value actually set.
+ @param Parity The type of parity to use on this serial device. A Parity value of
+ DefaultParity will use the device's default parity value.
+ On output, the value actually set.
+ @param DataBits The number of data bits to use on the serial device. A DataBits
+ vaule of 0 will use the device's default data bit setting.
+ On output, the value actually set.
+ @param StopBits The number of stop bits to use on this serial device. A StopBits
+ value of DefaultStopBits will use the device's default number of
+ stop bits.
+ On output, the value actually set.
+
+ @retval RETURN_SUCCESS The new attributes were set on the serial device.
+ @retval RETURN_UNSUPPORTED The serial device does not support this operation.
+ @retval RETURN_INVALID_PARAMETER One or more of the attributes has an unsupported value.
+ @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortSetAttributes (
+ IN OUT UINT64 *BaudRate,
+ IN OUT UINT32 *ReceiveFifoDepth,
+ IN OUT UINT32 *Timeout,
+ IN OUT EFI_PARITY_TYPE *Parity,
+ IN OUT UINT8 *DataBits,
+ IN OUT EFI_STOP_BITS_TYPE *StopBits
+ )
+{
+ return RETURN_SUCCESS;
+}
+
diff --git a/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/U500SerialPortLib.uni b/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/U500SerialPortLib.uni
new file mode 100644
index 0000000..a1ad72e
--- /dev/null
+++ b/Platform/RiscV/SiFive/U500Pkg/Library/SerialIoLib/U500SerialPortLib.uni
@@ -0,0 +1,22 @@
+// /** @file
+// Library instance for SerialIo library class
+//
+// Library instance for SerialIO library class.
+//
+// Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php
+//
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT #language en-US "Library instance for SerialIO library class"
+
+#string STR_MODULE_DESCRIPTION #language en-US "Library instance for SerialIO library class."
+
--
2.7.4
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