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devel@edk2.groups.io,ray.ni@intel.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: AQ7jwGi0rUDep64lJdyTqrilx7686176AA= Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b="myScS/VS"; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}"); dmarc=fail reason="SPF not aligned (relaxed), DKIM not aligned (relaxed)" header.from=intel.com (policy=none); spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io Chao, Do you mind putting the lib content under UefiCpuPkg/CpuDxe/LoongArch64/? It also follows the guidelines and avoid creating too many folders under ro= ot folder. Thanks, Ray > -----Original Message----- > From: Chao Li > Sent: Friday, January 12, 2024 4:25 PM > To: devel@edk2.groups.io > Cc: Dong, Eric ; Ni, Ray ; Kumar, > Rahul R ; Gerd Hoffmann ; > Baoqi Zhang ; Dongyan Qian > > Subject: [PATCH v7 16/37] UefiCpuPkg: Add CpuDxe driver for LoongArch64 >=20 > Added a new DXE driver named CpuDxeLoongArch64. >=20 > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D4584 >=20 > Cc: Eric Dong > Cc: Ray Ni > Cc: Rahul Kumar > Cc: Gerd Hoffmann > Signed-off-by: Chao Li > Co-authored-by: Baoqi Zhang > Co-authored-by: Dongyan Qian > Acked-by: Ray Ni > --- > UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c | 414 +++++++++++++++++ > UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h | 288 ++++++++++++ > UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf | 60 +++ > UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.uni | 15 + > UefiCpuPkg/CpuDxeLoongArch64/CpuMp.c | 544 > +++++++++++++++++++++++ > UefiCpuPkg/CpuDxeLoongArch64/CpuMp.h | 469 > +++++++++++++++++++ > UefiCpuPkg/CpuDxeLoongArch64/Exception.c | 159 +++++++ > UefiCpuPkg/UefiCpuPkg.dsc | 1 + > 8 files changed, 1950 insertions(+) > create mode 100644 UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c > create mode 100644 UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h > create mode 100644 UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf > create mode 100644 UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.uni > create mode 100644 UefiCpuPkg/CpuDxeLoongArch64/CpuMp.c > create mode 100644 UefiCpuPkg/CpuDxeLoongArch64/CpuMp.h > create mode 100644 UefiCpuPkg/CpuDxeLoongArch64/Exception.c >=20 > diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c > b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c > new file mode 100644 > index 0000000000..dd83df96ea > --- /dev/null > +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c > @@ -0,0 +1,414 @@ > +/** @file CpuDxe.c > + > + CPU DXE Module to produce CPU ARCH Protocol. > + > + Copyright (c) 2024, Loongson Technology Corporation Limited. All right= s > reserved.
> + > + SPDX-License-Identifier: BSD-2-Clause-Patent > +**/ > + > +#include "CpuDxe.h" > +#include "CpuMp.h" > +#include > +#include > +#include > + > +/** > + IPI Interrupt Handler. > + > + @param InterruptType The type of interrupt that occurred > + @param SystemContext A pointer to the system context when the > interrupt occurred > +**/ > +VOID > +EFIAPI > +IpiInterruptHandler ( > + IN EFI_EXCEPTION_TYPE InterruptType, > + IN EFI_SYSTEM_CONTEXT SystemContext > + ); > + > +// > +// Globals used to initialize the protocol > +// > +EFI_HANDLE mCpuHandle =3D NULL; > +EFI_CPU_ARCH_PROTOCOL gCpu =3D { > + CpuFlushCpuDataCache, > + CpuEnableInterrupt, > + CpuDisableInterrupt, > + CpuGetInterruptState, > + CpuInit, > + CpuRegisterInterruptHandler, > + CpuGetTimerValue, > + CpuSetMemoryAttributes, > + 0, // NumberOfTimers > + 4, // DmaBufferAlignment > +}; > + > +/** > + This function flushes the range of addresses from Start to Start+Lengt= h > + from the processor's data cache. If Start is not aligned to a cache li= ne > + boundary, then the bytes before Start to the preceding cache line boun= dary > + are also flushed. If Start+Length is not aligned to a cache line bound= ary, > + then the bytes past Start+Length to the end of the next cache line bou= ndary > + are also flushed. The FlushType of EfiCpuFlushTypeWriteBackInvalidate > must be > + supported. If the data cache is fully coherent with all DMA operations= , then > + this function can just return EFI_SUCCESS. If the processor does not s= upport > + flushing a range of the data cache, then the entire data cache can be > flushed. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param Start The beginning physical address to flush from = the > processor's data > + cache. > + @param Length The number of bytes to flush from the process= or's > data cache. This > + function may flush more bytes than Length spe= cifies depending > upon > + the granularity of the flush operation that t= he processor > supports. > + @param FlushType Specifies the type of flush operation to perf= orm. > + > + @retval EFI_SUCCESS The address range from Start to Start+Le= ngth > was flushed from > + the processor's data cache. > + @retval EFI_INVALID_PARAMETER The processor does not support the > cache flush type specified > + by FlushType. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuFlushCpuDataCache ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_PHYSICAL_ADDRESS Start, > + IN UINT64 Length, > + IN EFI_CPU_FLUSH_TYPE FlushType > + ) > +{ > + switch (FlushType) { > + case EfiCpuFlushTypeWriteBack: > + WriteBackDataCacheRange ((VOID *)(UINTN)Start, (UINTN)Length); > + break; > + case EfiCpuFlushTypeInvalidate: > + InvalidateDataCacheRange ((VOID *)(UINTN)Start, (UINTN)Length); > + break; > + case EfiCpuFlushTypeWriteBackInvalidate: > + WriteBackInvalidateDataCacheRange ((VOID *)(UINTN)Start, > (UINTN)Length); > + break; > + default: > + return EFI_INVALID_PARAMETER; > + } > + > + return EFI_SUCCESS; > +} > + > +/** > + This function enables interrupt processing by the processor. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + > + @retval EFI_SUCCESS Interrupts are enabled on the processor. > + @retval EFI_DEVICE_ERROR Interrupts could not be enabled on the > processor. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuEnableInterrupt ( > + IN EFI_CPU_ARCH_PROTOCOL *This > + ) > +{ > + EnableInterrupts (); > + > + return EFI_SUCCESS; > +} > + > +/** > + This function disables interrupt processing by the processor. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + > + @retval EFI_SUCCESS Interrupts are disabled on the processor= . > + @retval EFI_DEVICE_ERROR Interrupts could not be disabled on the > processor. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuDisableInterrupt ( > + IN EFI_CPU_ARCH_PROTOCOL *This > + ) > +{ > + DisableInterrupts (); > + > + return EFI_SUCCESS; > +} > + > +/** > + This function retrieves the processor's current interrupt state a retu= rns it in > + State. If interrupts are currently enabled, then TRUE is returned. If = interrupts > + are currently disabled, then FALSE is returned. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param State A pointer to the processor's current interrup= t state. Set > to TRUE if > + interrupts are enabled and FALSE if interrupt= s are disabled. > + > + @retval EFI_SUCCESS The processor's current interrupt state = was > returned in State. > + @retval EFI_INVALID_PARAMETER State is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuGetInterruptState ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + OUT BOOLEAN *State > + ) > +{ > + if (State =3D=3D NULL) { > + return EFI_INVALID_PARAMETER; > + } > + > + *State =3D GetInterruptState (); > + return EFI_SUCCESS; > +} > + > +/** > + This function generates an INIT on the processor. If this function suc= ceeds, > then the > + processor will be reset, and control will not be returned to the calle= r. If > InitType is > + not supported by this processor, or the processor cannot programmatica= lly > generate an > + INIT without help from external hardware, then EFI_UNSUPPORTED is > returned. If an error > + occurs attempting to generate an INIT, then EFI_DEVICE_ERROR is return= ed. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param InitType The type of processor INIT to perform. > + > + @retval EFI_SUCCESS The processor INIT was performed. This r= eturn > code should never be seen. > + @retval EFI_UNSUPPORTED The processor INIT operation specified b= y > InitType is not supported > + by this processor. > + @retval EFI_DEVICE_ERROR The processor INIT failed. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuInit ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_CPU_INIT_TYPE InitType > + ) > +{ > + return EFI_UNSUPPORTED; > +} > + > +/** > + Registers a function to be called from the CPU interrupt handler. > + > + @param This Protocol instance structure > + @param InterruptType Defines which interrupt to hook. IA-32 > + valid range is 0x00 through 0xFF > + @param InterruptHandler A pointer to a function of type > + EFI_CPU_INTERRUPT_HANDLER that is calle= d > + when a processor interrupt occurs. A n= ull > + pointer is an error condition. > + > + @retval EFI_SUCCESS If handler installed or uninstalled. > + @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a > handler > + for InterruptType was previously instal= led. > + @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler > for > + InterruptType was not previously instal= led. > + @retval EFI_UNSUPPORTED The interrupt specified by InterruptTyp= e > + is not supported. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuRegisterInterruptHandler ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_EXCEPTION_TYPE InterruptType, > + IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler > + ) > +{ > + return RegisterInterruptHandler (InterruptType, InterruptHandler); > +} > + > +/** > + Returns a timer value from one of the CPU's internal timers. There is = no > + inherent time interval between ticks but is a function of the CPU freq= uency. > + > + @param This - Protocol instance structure. > + @param TimerIndex - Specifies which CPU timer is requested. > + @param TimerValue - Pointer to the returned timer value. > + @param TimerPeriod - A pointer to the amount of time that pas= ses > + in femtoseconds (10-15) for each increme= nt > + of TimerValue. If TimerValue does not > + increment at a predictable rate, then 0 = is > + returned. The amount of time that has > + passed between two calls to GetTimerValu= e() > + can be calculated with the formula > + (TimerValue2 - TimerValue1) * TimerPerio= d. > + This parameter is optional and may be NU= LL. > + > + @retval EFI_SUCCESS - If the CPU timer count was returned. > + @retval EFI_UNSUPPORTED - If the CPU does not have any readable > timers. > + @retval EFI_DEVICE_ERROR - If an error occurred while reading the= timer. > + @retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue = is > NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuGetTimerValue ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN UINT32 TimerIndex, > + OUT UINT64 *TimerValue, > + OUT UINT64 *TimerPeriod OPTIONAL > + ) > +{ > + return EFI_UNSUPPORTED; > +} > + > +/** > + This function modifies the attributes for the memory region specified = by > BaseAddress and > + Length from their current attributes to the attributes specified by At= tributes. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param BaseAddress The physical address that is the start addres= s of a > memory region. > + @param Length The size in bytes of the memory region. > + @param EfiAttributes The bit mask of attributes to set for the mem= ory > region. > + > + @retval EFI_SUCCESS The attributes were set for the memory r= egion. > + @retval EFI_ACCESS_DENIED The attributes for the memory resource > range specified by > + BaseAddress and Length cannot be modifie= d. > + @retval EFI_INVALID_PARAMETER Length is zero. > + @retval EFI_OUT_OF_RESOURCES There are not enough system resources > to modify the attributes of > + the memory resource range. > + @retval EFI_UNSUPPORTED The processor does not support one or > more bytes of the memory > + resource range specified by BaseAddress = and Length. > + The bit mask of attributes is not suppor= t for the memory > resource > + range specified by BaseAddress and Lengt= h. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuSetMemoryAttributes ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_PHYSICAL_ADDRESS BaseAddress, > + IN UINT64 Length, > + IN UINT64 EfiAttributes > + ) > +{ > + EFI_STATUS Status; > + UINTN LoongArchAttributes; > + UINTN RegionBaseAddress; > + UINTN RegionLength; > + UINTN RegionLoongArchAttributes; > + > + RegionLength =3D Length; > + Status =3D EFI_SUCCESS; > + > + if ((BaseAddress & (EFI_PAGE_SIZE - 1)) !=3D 0) { > + // > + // Minimum granularity is SIZE_4KB. > + // > + DEBUG (( > + DEBUG_INFO, > + "CpuSetMemoryAttributes(%lx, %lx, %lx): Minimum granularity is > SIZE_4KB\n", > + BaseAddress, > + Length, > + EfiAttributes > + )); > + > + Status =3D EFI_UNSUPPORTED; > + > + return Status; > + } > + > + // > + // Convert the 'Attribute' into LoongArch Attribute > + // > + LoongArchAttributes =3D EfiAttributeConverse (EfiAttributes); > + > + // > + // Get the region starting from 'BaseAddress' and its 'Attribute' > + // > + RegionBaseAddress =3D BaseAddress; > + Status =3D GetMemoryRegionAttributes ( > + RegionBaseAddress, > + &RegionLength, > + &RegionLoongArchAttributes > + ); > + > + // > + // Data & Instruction Caches are flushed when we set new memory > attributes. > + // So, we only set the attributes if the new region is different. > + // > + if ((Status =3D=3D EFI_NOT_FOUND) || (RegionLoongArchAttributes !=3D > LoongArchAttributes) || > + ((BaseAddress + Length) > (RegionBaseAddress + RegionLength))) > + { > + Status =3D SetMemoryRegionAttributes (BaseAddress, Length, EfiAttrib= utes, > 0x0); > + } > + > + ASSERT_EFI_ERROR (Status); > + > + return Status; > +} > + > +/** > + Callback function for idle events. > + > + @param Event Event whose notification function is bei= ng invoked. > + @param Context The pointer to the notification function= 's context, > + which is implementation-dependent. > + > +**/ > +VOID > +EFIAPI > +IdleLoopEventCallback ( > + IN EFI_EVENT Event, > + IN VOID *Context > + ) > +{ > + CpuSleep (); > +} > + > +/** > + Initialize the state information for the CPU Architectural Protocol. > + > + @param ImageHandle Image handle this driver. > + @param SystemTable Pointer to the System Table. > + > + @retval EFI_SUCCESS Thread can be successfully created > + @retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure > + @retval EFI_DEVICE_ERROR Cannot create the thread > + > +**/ > +EFI_STATUS > +CpuDxeInitialize ( > + IN EFI_HANDLE ImageHandle, > + IN EFI_SYSTEM_TABLE *SystemTable > + ) > +{ > + EFI_STATUS Status; > + EFI_EVENT IdleLoopEvent; > + > + InitializeExceptions (&gCpu); > + > + Status =3D gBS->InstallMultipleProtocolInterfaces ( > + &mCpuHandle, > + &gEfiCpuArchProtocolGuid, > + &gCpu, > + NULL > + ); > + ASSERT_EFI_ERROR (Status); > + > + Status =3D gCpu.RegisterInterruptHandler ( > + &gCpu, > + EXCEPT_LOONGARCH_INT_IPI, > + IpiInterruptHandler > + ); > + ASSERT_EFI_ERROR (Status); > + > + // > + // Setup a callback for idle events > + // > + Status =3D gBS->CreateEventEx ( > + EVT_NOTIFY_SIGNAL, > + TPL_NOTIFY, > + IdleLoopEventCallback, > + NULL, > + &gIdleLoopEventGuid, > + &IdleLoopEvent > + ); > + ASSERT_EFI_ERROR (Status); > + > + InitializeMpSupport (); > + > + return Status; > +} > diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h > b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h > new file mode 100644 > index 0000000000..8bfbfa3442 > --- /dev/null > +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h > @@ -0,0 +1,288 @@ > +/** @file CpuDxe.c > + > + CPU DXE Module to produce CPU ARCH Protocol. > + > + Copyright (c) 2024, Loongson Technology Corporation Limited. All right= s > reserved.
> + > + SPDX-License-Identifier: BSD-2-Clause-Patent > +**/ > + > +#ifndef CPU_DXE_H_ > +#define CPU_DXE_H_ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include > +#include > +#include > +#include > + > +// > +// For coding convenience, define the maximum valid > +// LoongArch exception. > +// Since UEFI V2.11, it will be present in DebugSupport.h. > +// > +#define MAX_LOONGARCH_EXCEPTION 64 > + > +/* > + This function flushes the range of addresses from Start to Start+Lengt= h > + from the processor's data cache. If Start is not aligned to a cache li= ne > + boundary, then the bytes before Start to the preceding cache line boun= dary > + are also flushed. If Start+Length is not aligned to a cache line bound= ary, > + then the bytes past Start+Length to the end of the next cache line bou= ndary > + are also flushed. The FlushType of EfiCpuFlushTypeWriteBackInvalidate > must be > + supported. If the data cache is fully coherent with all DMA operations= , then > + this function can just return EFI_SUCCESS. If the processor does not s= upport > + flushing a range of the data cache, then the entire data cache can be > flushed. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param Start The beginning physical address to flush from = the > processor's data > + cache. > + @param Length The number of bytes to flush from the process= or's > data cache. This > + function may flush more bytes than Length spe= cifies depending > upon > + the granularity of the flush operation that t= he processor > supports. > + @param FlushType Specifies the type of flush operation to perf= orm. > + > + @retval EFI_SUCCESS The address range from Start to Start+Le= ngth > was flushed from > + the processor's data cache. > + @retval EFI_UNSUPPORTEDT The processor does not support the cache > flush type specified > + by FlushType. > + @retval EFI_DEVICE_ERROR The address range from Start to Start+Le= ngth > could not be flushed > + from the processor's data cache. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuFlushCpuDataCache ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_PHYSICAL_ADDRESS Start, > + IN UINT64 Length, > + IN EFI_CPU_FLUSH_TYPE FlushType > + ); > + > +/** > + This function enables interrupt processing by the processor. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + > + @retval EFI_SUCCESS Interrupts are enabled on the processor. > + @retval EFI_DEVICE_ERROR Interrupts could not be enabled on the > processor. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuEnableInterrupt ( > + IN EFI_CPU_ARCH_PROTOCOL *This > + ); > + > +/** > + This function disables interrupt processing by the processor. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + > + @retval EFI_SUCCESS Interrupts are disabled on the processor= . > + @retval EFI_DEVICE_ERROR Interrupts could not be disabled on the > processor. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuDisableInterrupt ( > + IN EFI_CPU_ARCH_PROTOCOL *This > + ); > + > +/** > + This function retrieves the processor's current interrupt state a retu= rns it in > + State. If interrupts are currently enabled, then TRUE is returned. If = interrupts > + are currently disabled, then FALSE is returned. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param State A pointer to the processor's current interrup= t state. Set > to TRUE if > + interrupts are enabled and FALSE if interrupt= s are disabled. > + > + @retval EFI_SUCCESS The processor's current interrupt state = was > returned in State. > + @retval EFI_INVALID_PARAMETER State is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuGetInterruptState ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + OUT BOOLEAN *State > + ); > + > +/** > + This function generates an INIT on the processor. If this function suc= ceeds, > then the > + processor will be reset, and control will not be returned to the calle= r. If > InitType is > + not supported by this processor, or the processor cannot programmatica= lly > generate an > + INIT without help from external hardware, then EFI_UNSUPPORTED is > returned. If an error > + occurs attempting to generate an INIT, then EFI_DEVICE_ERROR is return= ed. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param InitType The type of processor INIT to perform. > + > + @retval EFI_SUCCESS The processor INIT was performed. This r= eturn > code should never be seen. > + @retval EFI_UNSUPPORTED The processor INIT operation specified b= y > InitType is not supported > + by this processor. > + @retval EFI_DEVICE_ERROR The processor INIT failed. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuInit ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_CPU_INIT_TYPE InitType > + ); > + > +/** > + Registers a function to be called from the CPU interrupt handler. > + > + @param This Protocol instance structure > + @param InterruptType Defines which interrupt to hook. IA-32 > + valid range is 0x00 through 0xFF > + @param InterruptHandler A pointer to a function of type > + EFI_CPU_INTERRUPT_HANDLER that is calle= d > + when a processor interrupt occurs. A n= ull > + pointer is an error condition. > + > + @retval EFI_SUCCESS If handler installed or uninstalled. > + @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a > handler > + for InterruptType was previously instal= led. > + @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler > for > + InterruptType was not previously instal= led. > + @retval EFI_UNSUPPORTED The interrupt specified by InterruptTyp= e > + is not supported. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuRegisterInterruptHandler ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_EXCEPTION_TYPE InterruptType, > + IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler > + ); > + > +/** > + Returns a timer value from one of the CPU's internal timers. There is = no > + inherent time interval between ticks but is a function of the CPU freq= uency. > + > + @param This - Protocol instance structure. > + @param TimerIndex - Specifies which CPU timer is requested. > + @param TimerValue - Pointer to the returned timer value. > + @param TimerPeriod - A pointer to the amount of time that pas= ses > + in femtoseconds (10-15) for each increme= nt > + of TimerValue. If TimerValue does not > + increment at a predictable rate, then 0 = is > + returned. The amount of time that has > + passed between two calls to GetTimerValu= e() > + can be calculated with the formula > + (TimerValue2 - TimerValue1) * TimerPerio= d. > + This parameter is optional and may be NU= LL. > + > + @retval EFI_SUCCESS - If the CPU timer count was returned. > + @retval EFI_UNSUPPORTED - If the CPU does not have any readable > timers. > + @retval EFI_DEVICE_ERROR - If an error occurred while reading the= timer. > + @retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue = is > NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuGetTimerValue ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN UINT32 TimerIndex, > + OUT UINT64 *TimerValue, > + OUT UINT64 *TimerPeriod OPTIONAL > + ); > + > +/** > + This function registers and enables the handler specified by > InterruptHandler for a processor > + interrupt or exception type specified by InterruptType. If InterruptHa= ndler is > NULL, then the > + handler for the processor interrupt or exception type specified by > InterruptType is uninstalled. > + The installed handler is called once for each processor interrupt or e= xception. > + > + @param InterruptType A pointer to the processor's current interrup= t > state. Set to TRUE if interrupts > + are enabled and FALSE if interrupts are disab= led. > + @param InterruptHandler A pointer to a function of type > EFI_CPU_INTERRUPT_HANDLER that is called > + when a processor interrupt occurs. If this pa= rameter is NULL, > then the handler > + will be uninstalled. > + > + @retval EFI_SUCCESS The handler for the processor interrupt = was > successfully installed or uninstalled. > + @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a > handler for InterruptType was > + previously installed. > + @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler > for InterruptType was not > + previously installed. > + @retval EFI_UNSUPPORTED The interrupt specified by InterruptType= is > not supported. > + > +**/ > +EFI_STATUS > +RegisterInterruptHandler ( > + IN EFI_EXCEPTION_TYPE InterruptType, > + IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler > + ); > + > +/** > + This function modifies the attributes for the memory region specified = by > BaseAddress and > + Length from their current attributes to the attributes specified by At= tributes. > + > + @param This The EFI_CPU_ARCH_PROTOCOL instance. > + @param BaseAddress The physical address that is the start addres= s of a > memory region. > + @param Length The size in bytes of the memory region. > + @param Attributes The bit mask of attributes to set for the mem= ory > region. > + > + @retval EFI_SUCCESS The attributes were set for the memory r= egion. > + @retval EFI_ACCESS_DENIED The attributes for the memory resource > range specified by > + BaseAddress and Length cannot be modifie= d. > + @retval EFI_INVALID_PARAMETER Length is zero. > + @retval EFI_OUT_OF_RESOURCES There are not enough system resources > to modify the attributes of > + the memory resource range. > + @retval EFI_UNSUPPORTED The processor does not support one or > more bytes of the memory > + resource range specified by BaseAddress = and Length. > + The bit mask of attributes is not suppor= t for the memory > resource > + range specified by BaseAddress and Lengt= h. > + > +**/ > +EFI_STATUS > +EFIAPI > +CpuSetMemoryAttributes ( > + IN EFI_CPU_ARCH_PROTOCOL *This, > + IN EFI_PHYSICAL_ADDRESS BaseAddress, > + IN UINT64 Length, > + IN UINT64 Attributes > + ); > + > +/** > + Initialize interrupt handling for DXE phase. > + > + @param Cpu A pointer of EFI_CPU_ARCH_PROTOCOL instance. > + > + @return VOID. > + > +**/ > +VOID > +InitializeExceptions ( > + IN EFI_CPU_ARCH_PROTOCOL *gCpu > + ); > + > +/** > + Converts EFI Attributes to corresponding architecture Attributes. > + > + @param[in] EfiAttributes Efi Attributes. > + > + @retval Corresponding architecture attributes. > +**/ > +UINTN > +EFIAPI > +EfiAttributeConverse ( > + IN UINTN EfiAttributes > + ); > + > +#endif // CPU_DXE_H_ > diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf > b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf > new file mode 100644 > index 0000000000..611a60b049 > --- /dev/null > +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf > @@ -0,0 +1,60 @@ > +## @file > +# CPU driver installs CPU Architecture Protocol and CPU MP protocol. > +# > +# Copyright (c) 2024, Loongson Technology Corporation Limited. All righ= ts > reserved.
> +# > +# SPDX-License-Identifier: BSD-2-Clause-Patent > +# > +## > + > +[Defines] > + INF_VERSION =3D 1.29 > + BASE_NAME =3D CpuDxe > + MODULE_UNI_FILE =3D CpuDxe.uni > + FILE_GUID =3D BF954921-25C1-48C0-9BFB-8D0CD7EE92D= A > + MODULE_TYPE =3D DXE_DRIVER > + VERSION_STRING =3D 1.0 > + > + ENTRY_POINT =3D CpuDxeInitialize > + > +[Sources] > + CpuDxe.c > + CpuMp.c > + Exception.c > + CpuDxe.h > + CpuMp.h > + > +[Packages] > + MdePkg/MdePkg.dec > + MdeModulePkg/MdeModulePkg.dec > + UefiCpuPkg/UefiCpuPkg.dec > + > +[LibraryClasses] > + BaseLib > + BaseMemoryLib > + CacheMaintenanceLib > + CpuExceptionHandlerLib > + CpuLib > + CpuMmuLib > + DebugLib > + DxeServicesTableLib > + HobLib > + MpInitLib > + PeCoffGetEntryPointLib > + UefiDriverEntryPoint > + UefiLib > + > +[Protocols] > + gEfiCpuArchProtocolGuid > + gEfiMpServiceProtocolGuid > + > +[Guids] > + gEfiDebugImageInfoTableGuid > + gIdleLoopEventGuid > + gEfiVectorHandoffTableGuid > + > +[Pcd] > + gUefiCpuPkgTokenSpaceGuid.PcdCpuExceptionVectorBaseAddress > + > +[Depex] > + TRUE > diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.uni > b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.uni > new file mode 100644 > index 0000000000..5e0d8a1d0d > --- /dev/null > +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.uni > @@ -0,0 +1,15 @@ > +// /** @file > +// CPU driver installs CPU Architecture Protocol and CPU MP Protocol. > +// > +// CPU driver installs CPU Architecture Protocol and CPU MP Protocol. > +// > +// Copyright (c) 2024, Loongson Technology Corporation Limited. All righ= ts > reserved.
> +// > +// SPDX-License-Identifier: BSD-2-Clause-Patent > +// > +// **/ > + > + > +#string STR_MODULE_ABSTRACT #language en-US "CPU driver inst= alls > CPU Architecture Protocol and CPU MP Protocol." > + > +#string STR_MODULE_DESCRIPTION #language en-US "CPU driver > installs CPU Architecture Protocol and CPU MP Protocol." > diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.c > b/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.c > new file mode 100644 > index 0000000000..3325914e53 > --- /dev/null > +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.c > @@ -0,0 +1,544 @@ > +/** @file > + CPU DXE Module to produce CPU MP Protocol. > + > + Copyright (c) 2024, Loongson Technology Corporation Limited. All right= s > reserved.
> + > + SPDX-License-Identifier: BSD-2-Clause-Patent > +**/ > + > +#include "CpuDxe.h" > +#include "CpuMp.h" > + > +EFI_HANDLE mMpServiceHandle =3D NULL; > +UINTN mNumberOfProcessors =3D 1; > + > +EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate =3D { > + GetNumberOfProcessors, > + GetProcessorInfo, > + StartupAllAPs, > + StartupThisAP, > + SwitchBSP, > + EnableDisableAP, > + WhoAmI > +}; > + > +/** > + This service retrieves the number of logical processor in the platform > + and the number of those logical processors that are enabled on this bo= ot. > + This service may only be called from the BSP. > + > + This function is used to retrieve the following information: > + - The number of logical processors that are present in the system. > + - The number of enabled logical processors in the system at the inst= ant > + this call is made. > + > + Because MP Service Protocol provides services to enable and disable > processors > + dynamically, the number of enabled logical processors may vary during = the > + course of a boot session. > + > + If this service is called from an AP, then EFI_DEVICE_ERROR is returne= d. > + If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then > + EFI_INVALID_PARAMETER is returned. Otherwise, the total number of > processors > + is returned in NumberOfProcessors, the number of currently enabled > processor > + is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned. > + > + @param[in] This A pointer to the EFI_MP_SERVIC= ES_PROTOCOL > + instance. > + @param[out] NumberOfProcessors Pointer to the total number of > logical > + processors in the system, incl= uding the BSP > + and disabled APs. > + @param[out] NumberOfEnabledProcessors Pointer to the number of > enabled logical > + processors that exist in syste= m, including > + the BSP. > + > + @retval EFI_SUCCESS The number of logical processors and e= nabled > + logical processors was retrieved. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL. > + @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +GetNumberOfProcessors ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + OUT UINTN *NumberOfProcessors, > + OUT UINTN *NumberOfEnabledProcessors > + ) > +{ > + if ((NumberOfProcessors =3D=3D NULL) || (NumberOfEnabledProcessors =3D= =3D > NULL)) { > + return EFI_INVALID_PARAMETER; > + } > + > + return MpInitLibGetNumberOfProcessors ( > + NumberOfProcessors, > + NumberOfEnabledProcessors > + ); > +} > + > +/** > + Gets detailed MP-related information on the requested processor at the > + instant this call is made. This service may only be called from the BS= P. > + > + This service retrieves detailed MP-related information about any proce= ssor > + on the platform. Note the following: > + - The processor information may change during the course of a boot > session. > + - The information presented here is entirely MP related. > + > + Information regarding the number of caches and their sizes, frequency = of > operation, > + slot numbers is all considered platform-related information and is not > provided > + by this service. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PRO= TOCOL > + instance. > + @param[in] ProcessorNumber The handle number of processor. > + @param[out] ProcessorInfoBuffer A pointer to the buffer where > information for > + the requested processor is deposited= . > + > + @retval EFI_SUCCESS Processor information was returned. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL. > + @retval EFI_NOT_FOUND The processor with the handle specifie= d by > + ProcessorNumber does not exist in the = platform. > + > +**/ > +EFI_STATUS > +EFIAPI > +GetProcessorInfo ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN UINTN ProcessorNumber, > + OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer > + ) > +{ > + return MpInitLibGetProcessorInfo (ProcessorNumber, ProcessorInfoBuffer= , > NULL); > +} > + > +/** > + This service executes a caller provided function on all enabled APs. A= Ps can > + run either simultaneously or one at a time in sequence. This service s= upports > + both blocking and non-blocking requests. The non-blocking requests use= EFI > + events so the BSP can detect when the APs have finished. This service = may > only > + be called from the BSP. > + > + This function is used to dispatch all the enabled APs to the function = specified > + by Procedure. If any enabled AP is busy, then EFI_NOT_READY is return= ed > + immediately and Procedure is not started on any AP. > + > + If SingleThread is TRUE, all the enabled APs execute the function spec= ified by > + Procedure one by one, in ascending order of processor handle number. > Otherwise, > + all the enabled APs execute the function specified by Procedure > simultaneously. > + > + If WaitEvent is NULL, execution is in blocking mode. The BSP waits unt= il all > + APs finish or TimeoutInMicroseconds expires. Otherwise, execution is i= n > non-blocking > + mode, and the BSP returns from this service without waiting for APs. I= f a > + non-blocking mode is requested after the UEFI Event > EFI_EVENT_GROUP_READY_TO_BOOT > + is signaled, then EFI_UNSUPPORTED must be returned. > + > + If the timeout specified by TimeoutInMicroseconds expires before all A= Ps > return > + from Procedure, then Procedure on the failed APs is terminated. All en= abled > APs > + are always available for further calls to > EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() > + and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not > NULL, its > + content points to the list of processor handle numbers in which Proced= ure > was > + terminated. > + > + Note: It is the responsibility of the consumer of the > EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() > + to make sure that the nature of the code that is executed on the BSP a= nd the > + dispatched APs is well controlled. The MP Services Protocol does not > guarantee > + that the Procedure function is MP-safe. Hence, the tasks that can be r= un in > + parallel are limited to certain independent tasks and well-controlled > exclusive > + code. EFI services and protocols may not be called by APs unless other= wise > + specified. > + > + In blocking execution mode, BSP waits until all APs finish or > + TimeoutInMicroseconds expires. > + > + In non-blocking execution mode, BSP is freed to return to the caller a= nd then > + proceed to the next task without having to wait for APs. The following > + sequence needs to occur in a non-blocking execution mode: > + > + -# The caller that intends to use this MP Services Protocol in non-b= locking > + mode creates WaitEvent by calling the EFI CreateEvent() service. = The > caller > + invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the paramete= r > WaitEvent > + is not NULL, then StartupAllAPs() executes in non-blocking mode. = It > requests > + the function specified by Procedure to be started on all the enab= led APs, > + and releases the BSP to continue with other tasks. > + -# The caller can use the CheckEvent() and WaitForEvent() services t= o check > + the state of the WaitEvent created in step 1. > + -# When the APs complete their task or TimeoutInMicroSecondss expire= s, > the MP > + Service signals WaitEvent by calling the EFI SignalEvent() functi= on. If > + FailedCpuList is not NULL, its content is available when WaitEven= t is > + signaled. If all APs returned from Procedure prior to the timeout= , then > + FailedCpuList is set to NULL. If not all APs return from Procedur= e before > + the timeout, then FailedCpuList is filled in with the list of the= failed > + APs. The buffer is allocated by MP Service Protocol using Allocat= ePool(). > + It is the caller's responsibility to free the buffer with FreePoo= l() service. > + -# This invocation of SignalEvent() function informs the caller that= invoked > + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs > completed > + the specified task or a timeout occurred. The contents of FailedC= puList > + can be examined to determine which APs did not complete the speci= fied > task > + prior to the timeout. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_P= ROTOCOL > + instance. > + @param[in] Procedure A pointer to the function to be ru= n on > + enabled APs of the system. See typ= e > + EFI_AP_PROCEDURE. > + @param[in] SingleThread If TRUE, then all the enabled APs = execute > + the function specified by Procedur= e one by > + one, in ascending order of process= or handle > + number. If FALSE, then all the en= abled APs > + execute the function specified by = Procedure > + simultaneously. > + @param[in] WaitEvent The event created by the caller wi= th > CreateEvent() > + service. If it is NULL, then exec= ute in > + blocking mode. BSP waits until all= APs finish > + or TimeoutInMicroseconds expires. = If it's > + not NULL, then execute in non-bloc= king mode. > + BSP requests the function specifie= d by > + Procedure to be started on all the= enabled > + APs, and go on executing immediate= ly. If > + all return from Procedure, or Time= outInMicroseconds > + expires, this event is signaled. T= he BSP > + can use the CheckEvent() or WaitFo= rEvent() > + services to check the state of eve= nt. Type > + EFI_EVENT is defined in CreateEven= t() in > + the Unified Extensible Firmware In= terface > + Specification. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for > + APs to return from Procedure, eith= er for > + blocking or non-blocking mode. Zer= o means > + infinity. If the timeout expires = before > + all APs return from Procedure, the= n Procedure > + on the failed APs is terminated. A= ll enabled > + APs are available for next functio= n assigned > + by EFI_MP_SERVICES_PROTOCOL.Startu= pAllAPs() > + or EFI_MP_SERVICES_PROTOCOL.Startu= pThisAP(). > + If the timeout expires in blocking= mode, > + BSP returns EFI_TIMEOUT. If the t= imeout > + expires in non-blocking mode, Wait= Event > + is signaled with SignalEvent(). > + @param[in] ProcedureArgument The parameter passed into Procedur= e > for > + all APs. > + @param[out] FailedCpuList If NULL, this parameter is ignored= . > Otherwise, > + if all APs finish successfully, th= en its > + content is set to NULL. If not all= APs > + finish before timeout expires, the= n its > + content is set to address of the b= uffer > + holding handle numbers of the fail= ed APs. > + The buffer is allocated by MP Serv= ice Protocol, > + and it's the caller's responsibili= ty to > + free the buffer with FreePool() se= rvice. > + In blocking mode, it is ready for = consumption > + when the call returns. In non-bloc= king mode, > + it is ready when WaitEvent is sign= aled. The > + list of failed CPU is terminated b= y > + END_OF_CPU_LIST. > + > + @retval EFI_SUCCESS In blocking mode, all APs have finishe= d before > + the timeout expired. > + @retval EFI_SUCCESS In non-blocking mode, function has bee= n > dispatched > + to all enabled APs. > + @retval EFI_UNSUPPORTED A non-blocking mode request was made > after the > + UEFI event EFI_EVENT_GROUP_READY_TO_BO= OT was > + signaled. > + @retval EFI_DEVICE_ERROR Caller processor is AP. > + @retval EFI_NOT_STARTED No enabled APs exist in the system. > + @retval EFI_NOT_READY Any enabled APs are busy. > + @retval EFI_TIMEOUT In blocking mode, the timeout expired = before > + all enabled APs have finished. > + @retval EFI_INVALID_PARAMETER Procedure is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +StartupAllAPs ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN EFI_AP_PROCEDURE Procedure, > + IN BOOLEAN SingleThread, > + IN EFI_EVENT WaitEvent OPTIONAL, > + IN UINTN TimeoutInMicroseconds, > + IN VOID *ProcedureArgument OPTIONAL, > + OUT UINTN **FailedCpuList OPTIONAL > + ) > +{ > + return MpInitLibStartupAllAPs ( > + Procedure, > + SingleThread, > + WaitEvent, > + TimeoutInMicroseconds, > + ProcedureArgument, > + FailedCpuList > + ); > +} > + > +/** > + This service lets the caller get one enabled AP to execute a caller-pr= ovided > + function. The caller can request the BSP to either wait for the comple= tion > + of the AP or just proceed with the next task by using the EFI event > mechanism. > + See EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() for more details on non- > blocking > + execution support. This service may only be called from the BSP. > + > + This function is used to dispatch one enabled AP to the function speci= fied by > + Procedure passing in the argument specified by ProcedureArgument. If > WaitEvent > + is NULL, execution is in blocking mode. The BSP waits until the AP fin= ishes or > + TimeoutInMicroSecondss expires. Otherwise, execution is in non-blockin= g > mode. > + BSP proceeds to the next task without waiting for the AP. If a non-blo= cking > mode > + is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is > signaled, > + then EFI_UNSUPPORTED must be returned. > + > + If the timeout specified by TimeoutInMicroseconds expires before the A= P > returns > + from Procedure, then execution of Procedure by the AP is terminated. T= he > AP is > + available for subsequent calls to > EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() and > + EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). > + > + @param[in] This A pointer to the EFI_MP_SERVICES_P= ROTOCOL > + instance. > + @param[in] Procedure A pointer to the function to be ru= n on the > + designated AP of the system. See t= ype > + EFI_AP_PROCEDURE. > + @param[in] ProcessorNumber The handle number of the AP. The r= ange > is > + from 0 to the total number of logi= cal > + processors minus 1. The total numb= er of > + logical processors can be retrieve= d by > + > EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). > + @param[in] WaitEvent The event created by the caller wi= th > CreateEvent() > + service. If it is NULL, then exec= ute in > + blocking mode. BSP waits until thi= s AP finish > + or TimeoutInMicroSeconds expires. = If it's > + not NULL, then execute in non-bloc= king mode. > + BSP requests the function specifie= d by > + Procedure to be started on this AP= , > + and go on executing immediately. I= f this AP > + return from Procedure or TimeoutIn= MicroSeconds > + expires, this event is signaled. T= he BSP > + can use the CheckEvent() or WaitFo= rEvent() > + services to check the state of eve= nt. Type > + EFI_EVENT is defined in CreateEven= t() in > + the Unified Extensible Firmware In= terface > + Specification. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for > + this AP to finish this Procedure, = either for > + blocking or non-blocking mode. Zer= o means > + infinity. If the timeout expires = before > + this AP returns from Procedure, th= en Procedure > + on the AP is terminated. The > + AP is available for next function = assigned > + by EFI_MP_SERVICES_PROTOCOL.Startu= pAllAPs() > + or EFI_MP_SERVICES_PROTOCOL.Startu= pThisAP(). > + If the timeout expires in blocking= mode, > + BSP returns EFI_TIMEOUT. If the t= imeout > + expires in non-blocking mode, Wait= Event > + is signaled with SignalEvent(). > + @param[in] ProcedureArgument The parameter passed into Procedur= e > on the > + specified AP. > + @param[out] Finished If NULL, this parameter is ignored= . In > + blocking mode, this parameter is i= gnored. > + In non-blocking mode, if AP return= s from > + Procedure before the timeout expir= es, its > + content is set to TRUE. Otherwise,= the > + value is set to FALSE. The caller = can > + determine if the AP returned from = Procedure > + by evaluating this value. > + > + @retval EFI_SUCCESS In blocking mode, specified AP finishe= d before > + the timeout expires. > + @retval EFI_SUCCESS In non-blocking mode, the function has= been > + dispatched to specified AP. > + @retval EFI_UNSUPPORTED A non-blocking mode request was made > after the > + UEFI event EFI_EVENT_GROUP_READY_TO_BO= OT was > + signaled. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_TIMEOUT In blocking mode, the timeout expired = before > + the specified AP has finished. > + @retval EFI_NOT_READY The specified AP is busy. > + @retval EFI_NOT_FOUND The processor with the handle specifie= d by > + ProcessorNumber does not exist. > + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or > disabled AP. > + @retval EFI_INVALID_PARAMETER Procedure is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +StartupThisAP ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN EFI_AP_PROCEDURE Procedure, > + IN UINTN ProcessorNumber, > + IN EFI_EVENT WaitEvent OPTIONAL, > + IN UINTN TimeoutInMicroseconds, > + IN VOID *ProcedureArgument OPTIONAL, > + OUT BOOLEAN *Finished OPTIONAL > + ) > +{ > + return MpInitLibStartupThisAP ( > + Procedure, > + ProcessorNumber, > + WaitEvent, > + TimeoutInMicroseconds, > + ProcedureArgument, > + Finished > + ); > +} > + > +/** > + This service switches the requested AP to be the BSP from that point > onward. > + This service changes the BSP for all purposes. This call can only be > performed > + by the current BSP. > + > + This service switches the requested AP to be the BSP from that point > onward. > + This service changes the BSP for all purposes. The new BSP can take ov= er the > + execution of the old BSP and continue seamlessly from where the old on= e > left > + off. This service may not be supported after the UEFI Event > EFI_EVENT_GROUP_READY_TO_BOOT > + is signaled. > + > + If the BSP cannot be switched prior to the return from this service, t= hen > + EFI_UNSUPPORTED must be returned. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL > instance. > + @param[in] ProcessorNumber The handle number of AP that is to become > the new > + BSP. The range is from 0 to the total num= ber of > + logical processors minus 1. The total num= ber of > + logical processors can be retrieved by > + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProce= ssors(). > + @param[in] EnableOldBSP If TRUE, then the old BSP will be listed = as an > + enabled AP. Otherwise, it will be disable= d. > + > + @retval EFI_SUCCESS BSP successfully switched. > + @retval EFI_UNSUPPORTED Switching the BSP cannot be completed > prior to > + this service returning. > + @retval EFI_UNSUPPORTED Switching the BSP is not supported. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_NOT_FOUND The processor with the handle specifie= d by > + ProcessorNumber does not exist. > + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current > BSP or > + a disabled AP. > + @retval EFI_NOT_READY The specified AP is busy. > + > +**/ > +EFI_STATUS > +EFIAPI > +SwitchBSP ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN UINTN ProcessorNumber, > + IN BOOLEAN EnableOldBSP > + ) > +{ > + return MpInitLibSwitchBSP (ProcessorNumber, EnableOldBSP); > +} > + > +/** > + This service lets the caller enable or disable an AP from this point o= nward. > + This service may only be called from the BSP. > + > + This service allows the caller enable or disable an AP from this point= onward. > + The caller can optionally specify the health status of the AP by Healt= h. If > + an AP is being disabled, then the state of the disabled AP is implemen= tation > + dependent. If an AP is enabled, then the implementation must guarantee > that a > + complete initialization sequence is performed on the AP, so the AP is = in a > state > + that is compatible with an MP operating system. This service may not b= e > supported > + after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled. > + > + If the enable or disable AP operation cannot be completed prior to the > return > + from this service, then EFI_UNSUPPORTED must be returned. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL > instance. > + @param[in] ProcessorNumber The handle number of AP. > + The range is from 0 to the total number o= f > + logical processors minus 1. The total num= ber of > + logical processors can be retrieved by > + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProce= ssors(). > + @param[in] EnableAP Specifies the new state for the processor= for > + enabled, FALSE for disabled. > + @param[in] HealthFlag If not NULL, a pointer to a value that sp= ecifies > + the new health status of the AP. This fla= g > + corresponds to StatusFlag defined in > + EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo= (). Only > + the PROCESSOR_HEALTH_STATUS_BIT is used. = All other > + bits are ignored. If it is NULL, this pa= rameter > + is ignored. > + > + @retval EFI_SUCCESS The specified AP was enabled or disabl= ed > successfully. > + @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be > completed > + prior to this service returning. > + @retval EFI_UNSUPPORTED Enabling or disabling an AP is not > supported. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_NOT_FOUND Processor with the handle specified by > ProcessorNumber > + does not exist. > + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP. > + > +**/ > +EFI_STATUS > +EFIAPI > +EnableDisableAP ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN UINTN ProcessorNumber, > + IN BOOLEAN EnableAP, > + IN UINT32 *HealthFlag OPTIONAL > + ) > +{ > + return MpInitLibEnableDisableAP (ProcessorNumber, EnableAP, HealthFlag= ); > +} > + > +/** > + This return the handle number for the calling processor. This service= may be > + called from the BSP and APs. > + > + This service returns the processor handle number for the calling proce= ssor. > + The returned value is in the range from 0 to the total number of logic= al > + processors minus 1. The total number of logical processors can be retr= ieved > + with EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). This service > may be > + called from the BSP and APs. If ProcessorNumber is NULL, then > EFI_INVALID_PARAMETER > + is returned. Otherwise, the current processors handle number is return= ed in > + ProcessorNumber, and EFI_SUCCESS is returned. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL > instance. > + @param[out] ProcessorNumber Pointer to the handle number of AP. > + The range is from 0 to the total number o= f > + logical processors minus 1. The total num= ber of > + logical processors can be retrieved by > + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProce= ssors(). > + > + @retval EFI_SUCCESS The current processor handle number wa= s > returned > + in ProcessorNumber. > + @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +WhoAmI ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + OUT UINTN *ProcessorNumber > + ) > +{ > + return MpInitLibWhoAmI (ProcessorNumber); > +} > + > +/** > + Initialize Multi-processor support. > +**/ > +VOID > +InitializeMpSupport ( > + VOID > + ) > +{ > + EFI_STATUS Status; > + UINTN NumberOfProcessors; > + UINTN NumberOfEnabledProcessors; > + > + // > + // Wakeup APs to do initialization > + // > + Status =3D MpInitLibInitialize (); > + ASSERT_EFI_ERROR (Status); > + > + MpInitLibGetNumberOfProcessors (&NumberOfProcessors, > &NumberOfEnabledProcessors); > + mNumberOfProcessors =3D NumberOfProcessors; > + DEBUG ((DEBUG_INFO, "Detect CPU count: %d\n", > mNumberOfProcessors)); > + > + Status =3D gBS->InstallMultipleProtocolInterfaces ( > + &mMpServiceHandle, > + &gEfiMpServiceProtocolGuid, > + &mMpServicesTemplate, > + NULL > + ); > + ASSERT_EFI_ERROR (Status); > +} > diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.h > b/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.h > new file mode 100644 > index 0000000000..76f9b451fa > --- /dev/null > +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.h > @@ -0,0 +1,469 @@ > +/** @file > + CPU DXE MP support > + > + Copyright (c) 2024, Loongson Technology Corporation Limited. All right= s > reserved.
> + SPDX-License-Identifier: BSD-2-Clause-Patent > + > +**/ > + > +#ifndef CPU_MP_H_ > +#define CPU_MP_H_ > + > +/** > + Initialize Multi-processor support. > + > +**/ > +VOID > +InitializeMpSupport ( > + VOID > + ); > + > +/** > + This service retrieves the number of logical processor in the platform > + and the number of those logical processors that are enabled on this bo= ot. > + This service may only be called from the BSP. > + > + This function is used to retrieve the following information: > + - The number of logical processors that are present in the system. > + - The number of enabled logical processors in the system at the inst= ant > + this call is made. > + > + Because MP Service Protocol provides services to enable and disable > processors > + dynamically, the number of enabled logical processors may vary during = the > + course of a boot session. > + > + If this service is called from an AP, then EFI_DEVICE_ERROR is returne= d. > + If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then > + EFI_INVALID_PARAMETER is returned. Otherwise, the total number of > processors > + is returned in NumberOfProcessors, the number of currently enabled > processor > + is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned. > + > + @param[in] This A pointer to the EFI_MP_SERVIC= ES_PROTOCOL > + instance. > + @param[out] NumberOfProcessors Pointer to the total number of > logical > + processors in the system, incl= uding the BSP > + and disabled APs. > + @param[out] NumberOfEnabledProcessors Pointer to the number of > enabled logical > + processors that exist in syste= m, including > + the BSP. > + > + @retval EFI_SUCCESS The number of logical processors and e= nabled > + logical processors was retrieved. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL. > + @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +GetNumberOfProcessors ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + OUT UINTN *NumberOfProcessors, > + OUT UINTN *NumberOfEnabledProcessors > + ); > + > +/** > + Gets detailed MP-related information on the requested processor at the > + instant this call is made. This service may only be called from the BS= P. > + > + This service retrieves detailed MP-related information about any proce= ssor > + on the platform. Note the following: > + - The processor information may change during the course of a boot > session. > + - The information presented here is entirely MP related. > + > + Information regarding the number of caches and their sizes, frequency = of > operation, > + slot numbers is all considered platform-related information and is not > provided > + by this service. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PRO= TOCOL > + instance. > + @param[in] ProcessorNumber The handle number of processor. > + @param[out] ProcessorInfoBuffer A pointer to the buffer where > information for > + the requested processor is deposited= . > + > + @retval EFI_SUCCESS Processor information was returned. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL. > + @retval EFI_NOT_FOUND The processor with the handle specifie= d by > + ProcessorNumber does not exist in the = platform. > + > +**/ > +EFI_STATUS > +EFIAPI > +GetProcessorInfo ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN UINTN ProcessorNumber, > + OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer > + ); > + > +/** > + This service executes a caller provided function on all enabled APs. A= Ps can > + run either simultaneously or one at a time in sequence. This service s= upports > + both blocking and non-blocking requests. The non-blocking requests use= EFI > + events so the BSP can detect when the APs have finished. This service = may > only > + be called from the BSP. > + > + This function is used to dispatch all the enabled APs to the function = specified > + by Procedure. If any enabled AP is busy, then EFI_NOT_READY is return= ed > + immediately and Procedure is not started on any AP. > + > + If SingleThread is TRUE, all the enabled APs execute the function spec= ified by > + Procedure one by one, in ascending order of processor handle number. > Otherwise, > + all the enabled APs execute the function specified by Procedure > simultaneously. > + > + If WaitEvent is NULL, execution is in blocking mode. The BSP waits unt= il all > + APs finish or TimeoutInMicroseconds expires. Otherwise, execution is i= n > non-blocking > + mode, and the BSP returns from this service without waiting for APs. I= f a > + non-blocking mode is requested after the UEFI Event > EFI_EVENT_GROUP_READY_TO_BOOT > + is signaled, then EFI_UNSUPPORTED must be returned. > + > + If the timeout specified by TimeoutInMicroseconds expires before all A= Ps > return > + from Procedure, then Procedure on the failed APs is terminated. All en= abled > APs > + are always available for further calls to > EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() > + and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not > NULL, its > + content points to the list of processor handle numbers in which Proced= ure > was > + terminated. > + > + Note: It is the responsibility of the consumer of the > EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() > + to make sure that the nature of the code that is executed on the BSP a= nd the > + dispatched APs is well controlled. The MP Services Protocol does not > guarantee > + that the Procedure function is MP-safe. Hence, the tasks that can be r= un in > + parallel are limited to certain independent tasks and well-controlled > exclusive > + code. EFI services and protocols may not be called by APs unless other= wise > + specified. > + > + In blocking execution mode, BSP waits until all APs finish or > + TimeoutInMicroseconds expires. > + > + In non-blocking execution mode, BSP is freed to return to the caller a= nd then > + proceed to the next task without having to wait for APs. The following > + sequence needs to occur in a non-blocking execution mode: > + > + -# The caller that intends to use this MP Services Protocol in non-b= locking > + mode creates WaitEvent by calling the EFI CreateEvent() service. = The > caller > + invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the paramete= r > WaitEvent > + is not NULL, then StartupAllAPs() executes in non-blocking mode. = It > requests > + the function specified by Procedure to be started on all the enab= led APs, > + and releases the BSP to continue with other tasks. > + -# The caller can use the CheckEvent() and WaitForEvent() services t= o check > + the state of the WaitEvent created in step 1. > + -# When the APs complete their task or TimeoutInMicroSecondss expire= s, > the MP > + Service signals WaitEvent by calling the EFI SignalEvent() functi= on. If > + FailedCpuList is not NULL, its content is available when WaitEven= t is > + signaled. If all APs returned from Procedure prior to the timeout= , then > + FailedCpuList is set to NULL. If not all APs return from Procedur= e before > + the timeout, then FailedCpuList is filled in with the list of the= failed > + APs. The buffer is allocated by MP Service Protocol using Allocat= ePool(). > + It is the caller's responsibility to free the buffer with FreePoo= l() service. > + -# This invocation of SignalEvent() function informs the caller that= invoked > + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs > completed > + the specified task or a timeout occurred. The contents of FailedC= puList > + can be examined to determine which APs did not complete the speci= fied > task > + prior to the timeout. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_P= ROTOCOL > + instance. > + @param[in] Procedure A pointer to the function to be ru= n on > + enabled APs of the system. See typ= e > + EFI_AP_PROCEDURE. > + @param[in] SingleThread If TRUE, then all the enabled APs = execute > + the function specified by Procedur= e one by > + one, in ascending order of process= or handle > + number. If FALSE, then all the en= abled APs > + execute the function specified by = Procedure > + simultaneously. > + @param[in] WaitEvent The event created by the caller wi= th > CreateEvent() > + service. If it is NULL, then exec= ute in > + blocking mode. BSP waits until all= APs finish > + or TimeoutInMicroseconds expires. = If it's > + not NULL, then execute in non-bloc= king mode. > + BSP requests the function specifie= d by > + Procedure to be started on all the= enabled > + APs, and go on executing immediate= ly. If > + all return from Procedure, or Time= outInMicroseconds > + expires, this event is signaled. T= he BSP > + can use the CheckEvent() or WaitFo= rEvent() > + services to check the state of eve= nt. Type > + EFI_EVENT is defined in CreateEven= t() in > + the Unified Extensible Firmware In= terface > + Specification. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for > + APs to return from Procedure, eith= er for > + blocking or non-blocking mode. Zer= o means > + infinity. If the timeout expires = before > + all APs return from Procedure, the= n Procedure > + on the failed APs is terminated. A= ll enabled > + APs are available for next functio= n assigned > + by EFI_MP_SERVICES_PROTOCOL.Startu= pAllAPs() > + or EFI_MP_SERVICES_PROTOCOL.Startu= pThisAP(). > + If the timeout expires in blocking= mode, > + BSP returns EFI_TIMEOUT. If the t= imeout > + expires in non-blocking mode, Wait= Event > + is signaled with SignalEvent(). > + @param[in] ProcedureArgument The parameter passed into Procedur= e > for > + all APs. > + @param[out] FailedCpuList If NULL, this parameter is ignored= . > Otherwise, > + if all APs finish successfully, th= en its > + content is set to NULL. If not all= APs > + finish before timeout expires, the= n its > + content is set to address of the b= uffer > + holding handle numbers of the fail= ed APs. > + The buffer is allocated by MP Serv= ice Protocol, > + and it's the caller's responsibili= ty to > + free the buffer with FreePool() se= rvice. > + In blocking mode, it is ready for = consumption > + when the call returns. In non-bloc= king mode, > + it is ready when WaitEvent is sign= aled. The > + list of failed CPU is terminated b= y > + END_OF_CPU_LIST. > + > + @retval EFI_SUCCESS In blocking mode, all APs have finishe= d before > + the timeout expired. > + @retval EFI_SUCCESS In non-blocking mode, function has bee= n > dispatched > + to all enabled APs. > + @retval EFI_UNSUPPORTED A non-blocking mode request was made > after the > + UEFI event EFI_EVENT_GROUP_READY_TO_BO= OT was > + signaled. > + @retval EFI_DEVICE_ERROR Caller processor is AP. > + @retval EFI_NOT_STARTED No enabled APs exist in the system. > + @retval EFI_NOT_READY Any enabled APs are busy. > + @retval EFI_TIMEOUT In blocking mode, the timeout expired = before > + all enabled APs have finished. > + @retval EFI_INVALID_PARAMETER Procedure is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +StartupAllAPs ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN EFI_AP_PROCEDURE Procedure, > + IN BOOLEAN SingleThread, > + IN EFI_EVENT WaitEvent OPTIONAL, > + IN UINTN TimeoutInMicroseconds, > + IN VOID *ProcedureArgument OPTIONAL, > + OUT UINTN **FailedCpuList OPTIONAL > + ); > + > +/** > + This service lets the caller get one enabled AP to execute a caller-pr= ovided > + function. The caller can request the BSP to either wait for the comple= tion > + of the AP or just proceed with the next task by using the EFI event > mechanism. > + See EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() for more details on non- > blocking > + execution support. This service may only be called from the BSP. > + > + This function is used to dispatch one enabled AP to the function speci= fied by > + Procedure passing in the argument specified by ProcedureArgument. If > WaitEvent > + is NULL, execution is in blocking mode. The BSP waits until the AP fin= ishes or > + TimeoutInMicroSecondss expires. Otherwise, execution is in non-blockin= g > mode. > + BSP proceeds to the next task without waiting for the AP. If a non-blo= cking > mode > + is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is > signaled, > + then EFI_UNSUPPORTED must be returned. > + > + If the timeout specified by TimeoutInMicroseconds expires before the A= P > returns > + from Procedure, then execution of Procedure by the AP is terminated. T= he > AP is > + available for subsequent calls to > EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() and > + EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). > + > + @param[in] This A pointer to the EFI_MP_SERVICES_P= ROTOCOL > + instance. > + @param[in] Procedure A pointer to the function to be ru= n on > + enabled APs of the system. See typ= e > + EFI_AP_PROCEDURE. > + @param[in] ProcessorNumber The handle number of the AP. The r= ange > is > + from 0 to the total number of logi= cal > + processors minus 1. The total numb= er of > + logical processors can be retrieve= d by > + > EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). > + @param[in] WaitEvent The event created by the caller wi= th > CreateEvent() > + service. If it is NULL, then exec= ute in > + blocking mode. BSP waits until all= APs finish > + or TimeoutInMicroseconds expires. = If it's > + not NULL, then execute in non-bloc= king mode. > + BSP requests the function specifie= d by > + Procedure to be started on all the= enabled > + APs, and go on executing immediate= ly. If > + all return from Procedure or Timeo= utInMicroseconds > + expires, this event is signaled. T= he BSP > + can use the CheckEvent() or WaitFo= rEvent() > + services to check the state of eve= nt. Type > + EFI_EVENT is defined in CreateEven= t() in > + the Unified Extensible Firmware In= terface > + Specification. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for > + APs to return from Procedure, eith= er for > + blocking or non-blocking mode. Zer= o means > + infinity. If the timeout expires = before > + all APs return from Procedure, the= n Procedure > + on the failed APs is terminated. A= ll enabled > + APs are available for next functio= n assigned > + by EFI_MP_SERVICES_PROTOCOL.Startu= pAllAPs() > + or EFI_MP_SERVICES_PROTOCOL.Startu= pThisAP(). > + If the timeout expires in blocking= mode, > + BSP returns EFI_TIMEOUT. If the t= imeout > + expires in non-blocking mode, Wait= Event > + is signaled with SignalEvent(). > + @param[in] ProcedureArgument The parameter passed into Procedur= e > for > + all APs. > + @param[out] Finished If NULL, this parameter is ignored= . In > + blocking mode, this parameter is i= gnored. > + In non-blocking mode, if AP return= s from > + Procedure before the timeout expir= es, its > + content is set to TRUE. Otherwise,= the > + value is set to FALSE. The caller = can > + determine if the AP returned from = Procedure > + by evaluating this value. > + > + @retval EFI_SUCCESS In blocking mode, specified AP finishe= d before > + the timeout expires. > + @retval EFI_SUCCESS In non-blocking mode, the function has= been > + dispatched to specified AP. > + @retval EFI_UNSUPPORTED A non-blocking mode request was made > after the > + UEFI event EFI_EVENT_GROUP_READY_TO_BO= OT was > + signaled. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_TIMEOUT In blocking mode, the timeout expired = before > + the specified AP has finished. > + @retval EFI_NOT_READY The specified AP is busy. > + @retval EFI_NOT_FOUND The processor with the handle specifie= d by > + ProcessorNumber does not exist. > + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or > disabled AP. > + @retval EFI_INVALID_PARAMETER Procedure is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +StartupThisAP ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN EFI_AP_PROCEDURE Procedure, > + IN UINTN ProcessorNumber, > + IN EFI_EVENT WaitEvent OPTIONAL, > + IN UINTN TimeoutInMicroseconds, > + IN VOID *ProcedureArgument OPTIONAL, > + OUT BOOLEAN *Finished OPTIONAL > + ); > + > +/** > + This service switches the requested AP to be the BSP from that point > onward. > + This service changes the BSP for all purposes. This call can only be > performed > + by the current BSP. > + > + This service switches the requested AP to be the BSP from that point > onward. > + This service changes the BSP for all purposes. The new BSP can take ov= er the > + execution of the old BSP and continue seamlessly from where the old on= e > left > + off. This service may not be supported after the UEFI Event > EFI_EVENT_GROUP_READY_TO_BOOT > + is signaled. > + > + If the BSP cannot be switched prior to the return from this service, t= hen > + EFI_UNSUPPORTED must be returned. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL > instance. > + @param[in] ProcessorNumber The handle number of AP that is to become > the new > + BSP. The range is from 0 to the total num= ber of > + logical processors minus 1. The total num= ber of > + logical processors can be retrieved by > + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProce= ssors(). > + @param[in] EnableOldBSP If TRUE, then the old BSP will be listed = as an > + enabled AP. Otherwise, it will be disable= d. > + > + @retval EFI_SUCCESS BSP successfully switched. > + @retval EFI_UNSUPPORTED Switching the BSP cannot be completed > prior to > + this service returning. > + @retval EFI_UNSUPPORTED Switching the BSP is not supported. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_NOT_FOUND The processor with the handle specifie= d by > + ProcessorNumber does not exist. > + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current > BSP or > + a disabled AP. > + @retval EFI_NOT_READY The specified AP is busy. > + > +**/ > +EFI_STATUS > +EFIAPI > +SwitchBSP ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN UINTN ProcessorNumber, > + IN BOOLEAN EnableOldBSP > + ); > + > +/** > + This service lets the caller enable or disable an AP from this point o= nward. > + This service may only be called from the BSP. > + > + This service allows the caller enable or disable an AP from this point= onward. > + The caller can optionally specify the health status of the AP by Healt= h. If > + an AP is being disabled, then the state of the disabled AP is implemen= tation > + dependent. If an AP is enabled, then the implementation must guarantee > that a > + complete initialization sequence is performed on the AP, so the AP is = in a > state > + that is compatible with an MP operating system. This service may not b= e > supported > + after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled. > + > + If the enable or disable AP operation cannot be completed prior to the > return > + from this service, then EFI_UNSUPPORTED must be returned. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL > instance. > + @param[in] ProcessorNumber The handle number of AP that is to become > the new > + BSP. The range is from 0 to the total num= ber of > + logical processors minus 1. The total num= ber of > + logical processors can be retrieved by > + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProce= ssors(). > + @param[in] EnableAP Specifies the new state for the processor= for > + enabled, FALSE for disabled. > + @param[in] HealthFlag If not NULL, a pointer to a value that sp= ecifies > + the new health status of the AP. This fla= g > + corresponds to StatusFlag defined in > + EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo= (). Only > + the PROCESSOR_HEALTH_STATUS_BIT is used. = All other > + bits are ignored. If it is NULL, this pa= rameter > + is ignored. > + > + @retval EFI_SUCCESS The specified AP was enabled or disabl= ed > successfully. > + @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be > completed > + prior to this service returning. > + @retval EFI_UNSUPPORTED Enabling or disabling an AP is not > supported. > + @retval EFI_DEVICE_ERROR The calling processor is an AP. > + @retval EFI_NOT_FOUND Processor with the handle specified by > ProcessorNumber > + does not exist. > + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP. > + > +**/ > +EFI_STATUS > +EFIAPI > +EnableDisableAP ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + IN UINTN ProcessorNumber, > + IN BOOLEAN EnableAP, > + IN UINT32 *HealthFlag OPTIONAL > + ); > + > +/** > + This return the handle number for the calling processor. This service= may be > + called from the BSP and APs. > + > + This service returns the processor handle number for the calling proce= ssor. > + The returned value is in the range from 0 to the total number of logic= al > + processors minus 1. The total number of logical processors can be retr= ieved > + with EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). This service > may be > + called from the BSP and APs. If ProcessorNumber is NULL, then > EFI_INVALID_PARAMETER > + is returned. Otherwise, the current processors handle number is return= ed in > + ProcessorNumber, and EFI_SUCCESS is returned. > + > + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL > instance. > + @param[out] ProcessorNumber The handle number of AP that is to > become the new > + BSP. The range is from 0 to the total num= ber of > + logical processors minus 1. The total num= ber of > + logical processors can be retrieved by > + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProce= ssors(). > + > + @retval EFI_SUCCESS The current processor handle number wa= s > returned > + in ProcessorNumber. > + @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +WhoAmI ( > + IN EFI_MP_SERVICES_PROTOCOL *This, > + OUT UINTN *ProcessorNumber > + ); > + > +#endif // CPU_MP_H_ > diff --git a/UefiCpuPkg/CpuDxeLoongArch64/Exception.c > b/UefiCpuPkg/CpuDxeLoongArch64/Exception.c > new file mode 100644 > index 0000000000..96def89936 > --- /dev/null > +++ b/UefiCpuPkg/CpuDxeLoongArch64/Exception.c > @@ -0,0 +1,159 @@ > +/** @file Exception.c > + > + CPU DXE Module initialization exception instance. > + > + Copyright (c) 2024, Loongson Technology Corporation Limited. All right= s > reserved.
> + > + SPDX-License-Identifier: BSD-2-Clause-Patent > +**/ > + > +#include "CpuDxe.h" > +#include > +#include > +#include > + > +VOID > +ExceptionEntryStart ( > + VOID > + ); > + > +VOID > +ExceptionEntryEnd ( > + VOID > + ); > + > +/** > + This function registers and enables the handler specified by > InterruptHandler for a processor > + interrupt or exception type specified by InterruptType. If InterruptHa= ndler is > NULL, then the > + handler for the processor interrupt or exception type specified by > InterruptType is uninstalled. > + The installed handler is called once for each processor interrupt or e= xception. > + > + @param InterruptType A pointer to the processor's current interrup= t > state. Set to TRUE if interrupts > + are enabled and FALSE if interrupts are disab= led. > + @param InterruptHandler A pointer to a function of type > EFI_CPU_INTERRUPT_HANDLER that is called > + when a processor interrupt occurs. If this pa= rameter is NULL, > then the handler > + will be uninstalled. > + > + @retval EFI_SUCCESS The handler for the processor interrupt = was > successfully installed or uninstalled. > + @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a > handler for InterruptType was > + previously installed. > + @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler > for InterruptType was not > + previously installed. > + @retval EFI_UNSUPPORTED The interrupt specified by InterruptType= is > not supported. > + > +**/ > +EFI_STATUS > +RegisterInterruptHandler ( > + IN EFI_EXCEPTION_TYPE InterruptType, > + IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler > + ) > +{ > + return (EFI_STATUS)RegisterCpuInterruptHandler (InterruptType, > InterruptHandler); > +} > + > +/** > + Update the exception start entry code. > + > + @retval EFI_SUCCESS Update the exception start entry code do= wn. > + @retval EFI_OUT_OF_RESOURCES The start entry code size out of bounds. > + > +**/ > +EFI_STATUS > +EFIAPI > +UpdateExceptionStartEntry ( > + VOID > + ) > +{ > + EFI_PHYSICAL_ADDRESS ExceptionStartEntry; > + UINTN VectorLength; > + UINTN MaxLength; > + UINTN MaxSizeOfVector; > + > + VectorLength =3D (UINTN)ExceptionEntryEnd - (UINTN)ExceptionEntryStart= ; > + > + // > + // A vector is up to 512 bytes. > + // > + MaxSizeOfVector =3D 512; > + MaxLength =3D (MAX_LOONGARCH_EXCEPTION + > MAX_LOONGARCH_INTERRUPT) * MaxSizeOfVector; > + > + if (VectorLength > MaxLength) { > + return EFI_OUT_OF_RESOURCES; > + } > + > + ExceptionStartEntry =3D PcdGet64 (PcdCpuExceptionVectorBaseAddress); > + > + InvalidateInstructionCacheRange ((VOID *)ExceptionStartEntry, > VectorLength); > + CopyMem ((VOID *)ExceptionStartEntry, (VOID *)ExceptionEntryStart, > VectorLength); > + InvalidateInstructionCacheRange ((VOID *)ExceptionStartEntry, > VectorLength); > + InvalidateDataCache (); > + > + // > + // If PcdCpuExceptionVectorBaseAddress is not used during SEC and PEI > stages, the exception > + // base addres is set to PcdCpuExceptionVectorBaseAddress. > + // > + if (CsrRead (LOONGARCH_CSR_EBASE) !=3D ExceptionStartEntry) { > + SetExceptionBaseAddress (ExceptionStartEntry); > + } > + > + return EFI_SUCCESS; > +} > + > +/** > + Initialize interrupt handling for DXE phase. > + > + @param Cpu A pointer of EFI_CPU_ARCH_PROTOCOL instance. > + > + @return VOID. > + > +**/ > +VOID > +InitializeExceptions ( > + IN EFI_CPU_ARCH_PROTOCOL *Cpu > + ) > +{ > + EFI_STATUS Status; > + EFI_VECTOR_HANDOFF_INFO *VectorInfoList; > + EFI_VECTOR_HANDOFF_INFO *VectorInfo; > + BOOLEAN IrqEnabled; > + > + VectorInfo =3D (EFI_VECTOR_HANDOFF_INFO *)NULL; > + Status =3D EfiGetSystemConfigurationTable (&gEfiVectorHandoffTable= Guid, > (VOID **)&VectorInfoList); > + > + if ((Status =3D=3D EFI_SUCCESS) && (VectorInfoList !=3D NULL)) { > + VectorInfo =3D VectorInfoList; > + } > + > + // > + // Disable interrupts > + // > + Cpu->GetInterruptState (Cpu, &IrqEnabled); > + if (IrqEnabled) { > + Cpu->DisableInterrupt (Cpu); > + } > + > + // > + // Update the Exception Start Entry code to point into CpuDxe. > + // > + Status =3D UpdateExceptionStartEntry (); > + if (EFI_ERROR (Status)) { > + DebugPrint (EFI_D_ERROR, "[%a]: Exception start entry code out of > bounds!\n", __func__); > + ASSERT_EFI_ERROR (Status); > + } > + > + // > + // Intialize the CpuExceptionHandlerLib so we take over the exception = vector > table from the DXE Core > + // > + Status =3D InitializeCpuExceptionHandlers (VectorInfo); > + ASSERT_EFI_ERROR (Status); > + > + // > + // Enable interrupts > + // > + DebugPrint (EFI_D_INFO, "InitializeExceptions,IrqEnabled =3D %x\n", > IrqEnabled); > + if (!IrqEnabled) { > + Status =3D Cpu->EnableInterrupt (Cpu); > + } > + > + ASSERT_EFI_ERROR (Status); > +} > diff --git a/UefiCpuPkg/UefiCpuPkg.dsc b/UefiCpuPkg/UefiCpuPkg.dsc > index 0f0bce0029..68e36f6a8e 100644 > --- a/UefiCpuPkg/UefiCpuPkg.dsc > +++ b/UefiCpuPkg/UefiCpuPkg.dsc > @@ -215,6 +215,7 @@ > UefiCpuPkg/Library/LoongArch64CpuMmuLib/DxeCpuMmuLib.inf > UefiCpuPkg/Library/LoongArch64MpInitLib/PeiMpInitLib.inf > UefiCpuPkg/Library/LoongArch64MpInitLib/DxeMpInitLib.inf > + UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf >=20 > [BuildOptions] > *_*_*_CC_FLAGS =3D -D DISABLE_NEW_DEPRECATED_INTERFACES > -- > 2.27.0 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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