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audk/MdePkg/Library
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Abner Chang e6042aec1b BaseLib:Fix RISC-V Supervisor mode (S-Mode) trap handler reentry issue. 
While RISC-V hart is trapped into S-Mode, the S-Mode interrupt
CSR (SIE) is disabled by RISC-V hart. However the (SIE) is enabled
again by RestoreTPL, this causes the second S-Mode trap is triggered
by the machine mode (M-Mode)timer interrupt redirection. The SRET
instruction clear Supervisor Previous Privilege (SPP) to zero
(User mode) in the second S-Mode interrupt according to the RISC-V
spec. Above brings hart to the user mode (U-Mode) when execute
SRET in the nested S-Mode interrupt handler because SPP is set to
User Mode in the second interrupt. Afterward, system runs in U-Mode
and any accesses to S-Mode CSR causes the invalid instruction exception.

Signed-off-by: Abner Chang <abner.chang@hpe.com>

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Abner Chang <abner.chang@hpe.com>
Acked-by: Liming Gao <liming.gao@intel.com>
2020-08-12 04:01:39 +00:00
..
BaseCacheMaintenanceLib
MdePkg/BaseCacheMaintenanceLib:
2020-05-07 03:17:15 +00:00
BaseCacheMaintenanceLibNull
MdePkg/BaseCacheMaintenanceLibNull: Add Null instance for host testing
2020-07-15 05:25:21 +00:00
BaseCpuLib
MdePkg/BaseCpuLib: RISC-V Base CPU library
2020-05-07 03:17:15 +00:00
BaseCpuLibNull
MdePkg/BaseCpuLibNull: Add Null version of CpuLib for host testing
2020-07-15 05:25:21 +00:00
BaseDebugLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseDebugLibSerialPort
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseDebugPrintErrorLevelLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseExtractGuidedSectionLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseIoLibIntrinsic
MdePkg/BaseIoLibIntrinsic: Rename IoLibArm.c=>IoLibNoIo.c
2020-05-07 03:17:15 +00:00
BaseLib
BaseLib:Fix RISC-V Supervisor mode (S-Mode) trap handler reentry issue.
2020-08-12 04:01:39 +00:00
BaseMemoryLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseMemoryLibMmx
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseMemoryLibOptDxe
MdePkg/BaseMemoryLibOptDxe: Apply BSD-2-Clause-Patent
2020-08-06 20:20:40 +00:00
BaseMemoryLibOptPei
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseMemoryLibRepStr
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseMemoryLibSse2
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseOrderedCollectionRedBlackTreeLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePcdLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePciCf8Lib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePciExpressLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePciLibCf8
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePciLibPciExpress
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePciSegmentInfoLibNull
MdePkg/PciSegmentInfoLib: Add missing EFIAPI to GetPciSegmentInfo()
2020-06-24 05:46:27 +00:00
BasePciSegmentLibPci
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePeCoffExtraActionLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePeCoffGetEntryPointLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePeCoffLib
MdePkg/BasePeCoff: Add RISC-V PE/Coff related code.
2020-05-07 03:17:15 +00:00
BasePerformanceLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePostCodeLibDebug
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePostCodeLibPort80
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BasePrintLib
MdePkg/BasePrintLib: avoid absolute addresses for error strings
2020-06-16 09:14:17 +00:00
BaseReportStatusCodeLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseRngLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseRngLibNull
MdePkg: add null version of RngLib
2019-11-14 01:32:15 +00:00
BaseS3BootScriptLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseS3IoLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseS3PciLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseS3PciSegmentLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseS3SmbusLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseS3StallLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseSafeIntLib
MdePkg/BaseSafeIntLib: Add RISCV64 arch for BaseSafeIntLib.
2020-05-07 03:17:15 +00:00
BaseSerialPortLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseSmbusLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseStackCheckLib
MdePkg/Library/BaseStackCheckLib: Fix PCD type in INF
2020-07-15 05:25:21 +00:00
BaseSynchronizationLib
MdePkg/BaseSynchronizationLib: RISC-V cache related code.
2020-05-07 03:17:15 +00:00
BaseTimerLibNullTemplate
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
BaseUefiDecompressLib
MdePkg/BaseUefiDecompressLib: Add missing description for parameter
2019-08-13 17:16:14 +08:00
DxeCoreEntryPoint
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
DxeCoreHobLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
DxeExtractGuidedSectionLib
MdePkg/Library/Dxe: Fix various typos
2020-02-10 22:30:07 +00:00
DxeHobLib
MdePkg/Library/Dxe: Fix various typos
2020-02-10 22:30:07 +00:00
DxeHstiLib
MdePkg/DxeHstiLib: Added checks to improve error handling.
2019-09-02 12:17:56 +08:00
DxeIoLibCpuIo2
MdePkg/Library/Dxe: Fix various typos
2020-02-10 22:30:07 +00:00
DxePcdLib
MdePkg/Library/Dxe: Fix various typos
2020-02-10 22:30:07 +00:00
DxeRuntimeDebugLibSerialPort
MdePkg: Do not use CreateEventEx unless required
2020-01-10 03:25:59 +00:00
DxeRuntimePciExpressLib
MdePkg/Library/Dxe: Fix various typos
2020-02-10 22:30:07 +00:00
DxeServicesLib
MdePkg/DxeServicesLib: Add RISC-V architecture
2020-04-03 17:09:12 +00:00
DxeServicesTableLib
MdePkg/Library/Dxe: Fix various typos
2020-02-10 22:30:07 +00:00
DxeSmbusLib
MdePkg/Library/Dxe: Fix various typos
2020-02-10 22:30:07 +00:00
MmServicesTableLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PciSegmentLibSegmentInfo
MdePkg/Library/Pci: Fix various typos
2020-02-10 22:30:07 +00:00
PeiCoreEntryPoint
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiDxePostCodeLibReportStatusCode
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiExtractGuidedSectionLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiHobLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiIoLibCpuIo
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiMemoryAllocationLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiMemoryLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeimEntryPoint
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiPcdLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiPciLibPciCfg2
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiPciSegmentLibPciCfg2
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiResourcePublicationLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiServicesLib
MdePkg/PeiServicesLib.c: Change comments of PeiServicesResetSystem2
2019-04-28 09:40:12 +08:00
PeiServicesTablePointerLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiServicesTablePointerLibIdt
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
PeiSmbusLibSmbus2Ppi
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
SecPeiDxeTimerLibCpu
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
SmiHandlerProfileLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
SmmIoLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
SmmIoLibSmmCpuIo2
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
SmmLibNull
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
SmmMemLib
MdePkg/Library/Smm: Fix various typos
2020-02-10 22:30:07 +00:00
SmmMemoryAllocationLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
SmmPciExpressLib
MdePkg/Library/Smm: Fix various typos
2020-02-10 22:30:07 +00:00
SmmPciLibPciRootBridgeIo
MdePkg/Library/Smm: Fix various typos
2020-02-10 22:30:07 +00:00
SmmPeriodicSmiLib
MdePkg/Library/Smm: Fix various typos
2020-02-10 22:30:07 +00:00
SmmServicesTableLib
MdePkg/Library/Smm: Fix various typos
2020-02-10 22:30:07 +00:00
StandaloneMmDriverEntryPoint
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
StandaloneMmServicesTableLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiApplicationEntryPoint
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiBootServicesTableLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiDebugLibConOut
MdePkg: Do not use CreateEventEx unless required
2020-01-10 03:25:59 +00:00
UefiDebugLibDebugPortProtocol
MdePkg: Do not use CreateEventEx unless required
2020-01-10 03:25:59 +00:00
UefiDebugLibStdErr
MdePkg: Do not use CreateEventEx unless required
2020-01-10 03:25:59 +00:00
UefiDevicePathLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiDevicePathLibDevicePathProtocol
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiDriverEntryPoint
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiFileHandleLib
MdePkg/UefiFileHandleLib: Tolerate more Root handle FileNames
2019-11-04 08:52:57 +08:00
UefiLib
MdePkg: Update the comments of IsLanguageSupported
2019-11-20 15:03:24 +00:00
UefiMemoryAllocationLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiMemoryLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiPciLibPciRootBridgeIo
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiPciSegmentLibPciRootBridgeIo
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiRuntimeLib
MdePkg: Do not use CreateEventEx unless required
2020-01-10 03:25:59 +00:00
UefiRuntimeServicesTableLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00
UefiScsiLib
MdePkg/UefiScsiLib: Set FUA bit for synchronous SCSI Write operations
2020-04-15 01:13:04 +00:00
UefiUsbLib
MdePkg: Replace BSD License with BSD+Patent License
2019-04-09 10:58:13 -07:00