From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by spool.mail.gandi.net (Postfix) with ESMTPS id 75869941ACF for ; Tue, 12 Dec 2023 13:12:41 +0000 (UTC) DKIM-Signature: a=rsa-sha256; bh=KNdhiexAfzQiNQpWTQQ4yDDIxGJAkqO8WFBiIwFM/cs=; c=relaxed/simple; d=groups.io; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:MIME-Version:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Transfer-Encoding; s=20140610; t=1702386759; v=1; b=hD4mkTDclB2yCojplHb1TGku3mDgVZDq7zsPMbOXBmBz2XDpA+7ZLKUQv9sX5+EA6ylR18HW bRFUhKCCAXnWRJgD/JPfS8mATh6TlVzR1/+aZCEKJj02q6UakVommQdoFnBbivdkWq26+KIOH43 JPUtpOtSummmKixjpKVRnTLE= X-Received: by 127.0.0.2 with SMTP id bzjOYY7687511xEOoY078dmn; Tue, 12 Dec 2023 05:12:39 -0800 X-Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by mx.groups.io with SMTP id smtpd.web11.1214.1702386757990880950 for ; Tue, 12 Dec 2023 05:12:39 -0800 X-Received: from loongson.cn (unknown [10.2.9.245]) by gateway (Coremail) with SMTP id _____8AxG+lDXHhlqlkAAA--.2185S3; Tue, 12 Dec 2023 21:12:35 +0800 (CST) X-Received: from code-server.gen (unknown [10.2.9.245]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Axv+FCXHhl+6MAAA--.4747S2; Tue, 12 Dec 2023 21:12:34 +0800 (CST) From: "Chao Li" To: devel@edk2.groups.io Cc: Eric Dong , Ray Ni , Rahul Kumar , Gerd Hoffmann , Baoqi Zhang , Dongyan Qian Subject: [edk2-devel] [PATCH v4 15/37] UefiCpuPkg: Add CpuDxe driver for LoongArch64 Date: Tue, 12 Dec 2023 21:12:33 +0800 Message-Id: <20231212131233.2470984-1-lichao@loongson.cn> In-Reply-To: <20231212130932.2467028-1-lichao@loongson.cn> References: <20231212130932.2467028-1-lichao@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Axv+FCXHhl+6MAAA--.4747S2 X-CM-SenderInfo: xolfxt3r6o00pqjv00gofq/1tbiAQADCGV3wy0H6gAZsC X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,lichao@loongson.cn List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: 8tB0jtrBqZtxdEPFmbxxXzGKx7686176AA= Content-Transfer-Encoding: 8bit X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=hD4mkTDc; dmarc=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 Added a new DXE driver named CpuDxeLoongArch64. BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 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 --- UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c | 435 ++++++++++++++++++ UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h | 281 ++++++++++++ UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf | 60 +++ UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.uni | 15 + UefiCpuPkg/CpuDxeLoongArch64/CpuMp.c | 544 +++++++++++++++++++++++ UefiCpuPkg/CpuDxeLoongArch64/CpuMp.h | 471 ++++++++++++++++++++ UefiCpuPkg/CpuDxeLoongArch64/Exception.c | 150 +++++++ UefiCpuPkg/UefiCpuPkg.dsc | 1 + 8 files changed, 1957 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 diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c new file mode 100644 index 0000000000..b1e20047c8 --- /dev/null +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.c @@ -0,0 +1,435 @@ +/** @file CpuDxe.c + + CPU DXE Module to produce CPU ARCH Protocol. + + Copyright (c) 2023, Loongson Technology Corporation Limited. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#include "CpuDxe.h" +#include "CpuMp.h" +#include +#include +#include + +// +// Globals used to initialize the protocol +// +EFI_HANDLE mCpuHandle = NULL; +EFI_CPU_ARCH_PROTOCOL gCpu = { + CpuFlushCpuDataCache, + CpuEnableInterrupt, + CpuDisableInterrupt, + CpuGetInterruptState, + CpuInit, + CpuRegisterInterruptHandler, + CpuGetTimerValue, + CpuSetMemoryAttributes, + 0, // NumberOfTimers + 4, // DmaBufferAlignment +}; + +/** + This function flushes the range of addresses from Start to Start+Length + from the processor's data cache. If Start is not aligned to a cache line + boundary, then the bytes before Start to the preceding cache line boundary + are also flushed. If Start+Length is not aligned to a cache line boundary, + then the bytes past Start+Length to the end of the next cache line boundary + 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 support + 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 processor's data cache. This + function may flush more bytes than Length specifies depending upon + the granularity of the flush operation that the processor supports. + @param FlushType Specifies the type of flush operation to perform. + + @retval EFI_SUCCESS The address range from Start to Start+Length 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 returns 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 interrupt state. Set to TRUE if + interrupts are enabled and FALSE if interrupts 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 == NULL) { + return EFI_INVALID_PARAMETER; + } + + *State = GetInterruptState (); + return EFI_SUCCESS; +} + +/** + This function generates an INIT on the processor. If this function succeeds, then the + processor will be reset, and control will not be returned to the caller. If InitType is + not supported by this processor, or the processor cannot programmatically 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 returned. + + @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 return code should never be seen. + @retval EFI_UNSUPPORTED The processor INIT operation specified by 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 called + when a processor interrupt occurs. A null + 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 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 +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 frequency. + + @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 passes + in femtoseconds (10-15) for each increment + 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 GetTimerValue() + can be calculated with the formula + (TimerValue2 - TimerValue1) * TimerPeriod. + This parameter is optional and may be NULL. + + @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 Attributes. + + @param This The EFI_CPU_ARCH_PROTOCOL instance. + @param BaseAddress The physical address that is the start address 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 memory region. + + @retval EFI_SUCCESS The attributes were set for the memory region. + @retval EFI_ACCESS_DENIED The attributes for the memory resource range specified by + BaseAddress and Length cannot be modified. + @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 support for the memory resource + range specified by BaseAddress and Length. + +**/ +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 = 0x0; + + if ((BaseAddress & (SIZE_4KB - 1)) != 0) { + // + // Minimum granularity is SIZE_4KB. + // + DEBUG (( + DEBUG_INFO, + "CpuSetMemoryAttributes(%lx, %lx, %lx): Minimum granularity is SIZE_4KB\n", + BaseAddress, + Length, + EfiAttributes + )); + + return EFI_UNSUPPORTED; + } + + // + // Convert the 'Attribute' into LoongArch Attribute + // + LoongArchAttributes = EfiAttributeConverse (EfiAttributes); + + // + // Get the region starting from 'BaseAddress' and its 'Attribute' + // + RegionBaseAddress = BaseAddress; + Status = GetMemoryRegionAttributes ( + RegionBaseAddress, + BaseAddress + Length, + &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 (EFI_ERROR (Status) || (RegionLoongArchAttributes != LoongArchAttributes) || + ((BaseAddress + Length) > (RegionBaseAddress + RegionLength))) + { + Status = SetMemoryRegionAttributes (BaseAddress, Length, EfiAttributes, 0x0); + ASSERT_EFI_ERROR (Status); + } + + return EFI_SUCCESS; +} + +/** + Callback function for idle events. + + @param Event Event whose notification function is being 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 (); +} + +/** + 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 + ) +{ + UINT32 IpiStatus; + + VOID (*Procedure) ( + VOID + ); + + IpiStatus = IoCsrRead32 (LOONGARCH_IOCSR_IPI_STATUS); + + // + // Clear interrupt. + // + IoCsrWrite32 (LOONGARCH_IOCSR_IPI_CLEAR, IpiStatus); + + MemoryFence (); + + // + // If the IPI IRQ is SMP_BOOT_CPU, it means the BSP is waking up the APs from the kernel. + // So read out the boot vector and jump to it. + // + if (IpiStatus & SMP_BOOT_CPU) { + Procedure = (VOID *)IoCsrRead64 (LOONGARCH_IOCSR_MBUF0); + Procedure (); + } +} + +/** + 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 = gBS->InstallMultipleProtocolInterfaces ( + &mCpuHandle, + &gEfiCpuArchProtocolGuid, + &gCpu, + NULL + ); + ASSERT_EFI_ERROR (Status); + + // + // Setup a callback for idle events + // + Status = gBS->CreateEventEx ( + EVT_NOTIFY_SIGNAL, + TPL_NOTIFY, + IdleLoopEventCallback, + NULL, + &gIdleLoopEventGuid, + &IdleLoopEvent + ); + ASSERT_EFI_ERROR (Status); + + Status = gCpu.RegisterInterruptHandler ( + &gCpu, + EXCEPT_LOONGARCH_INT_IPI, + IpiInterruptHandler + ); + + InitializeMpSupport (); + + return Status; +} diff --git a/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h new file mode 100644 index 0000000000..194d29095b --- /dev/null +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.h @@ -0,0 +1,281 @@ +/** @file CpuDxe.c + + CPU DXE Module to produce CPU ARCH Protocol. + + Copyright (c) 2023, Loongson Technology Corporation Limited. All rights 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 + +/* + This function flushes the range of addresses from Start to Start+Length + from the processor's data cache. If Start is not aligned to a cache line + boundary, then the bytes before Start to the preceding cache line boundary + are also flushed. If Start+Length is not aligned to a cache line boundary, + then the bytes past Start+Length to the end of the next cache line boundary + 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 support + 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 processor's data cache. This + function may flush more bytes than Length specifies depending upon + the granularity of the flush operation that the processor supports. + @param FlushType Specifies the type of flush operation to perform. + + @retval EFI_SUCCESS The address range from Start to Start+Length 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+Length 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 returns 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 interrupt state. Set to TRUE if + interrupts are enabled and FALSE if interrupts 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 succeeds, then the + processor will be reset, and control will not be returned to the caller. If InitType is + not supported by this processor, or the processor cannot programmatically 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 returned. + + @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 return code should never be seen. + @retval EFI_UNSUPPORTED The processor INIT operation specified by 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 called + when a processor interrupt occurs. A null + 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 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 +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 frequency. + + @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 passes + in femtoseconds (10-15) for each increment + 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 GetTimerValue() + can be calculated with the formula + (TimerValue2 - TimerValue1) * TimerPeriod. + This parameter is optional and may be NULL. + + @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 InterruptHandler 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 exception. + + @param InterruptType A pointer to the processor's current interrupt state. Set to TRUE if interrupts + are enabled and FALSE if interrupts are disabled. + @param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called + when a processor interrupt occurs. If this parameter 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 Attributes. + + @param This The EFI_CPU_ARCH_PROTOCOL instance. + @param BaseAddress The physical address that is the start address 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 memory region. + + @retval EFI_SUCCESS The attributes were set for the memory region. + @retval EFI_ACCESS_DENIED The attributes for the memory resource range specified by + BaseAddress and Length cannot be modified. + @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 support for the memory resource + range specified by BaseAddress and Length. + +**/ +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..112628d788 --- /dev/null +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf @@ -0,0 +1,60 @@ +## @file +# CPU driver installs CPU Architecture Protocol and CPU MP protocol. +# +# Copyright (c) 2023, Loongson Technology Corporation Limited. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 1.29 + BASE_NAME = CpuDxe + MODULE_UNI_FILE = CpuDxe.uni + FILE_GUID = BF954921-25C1-48C0-9BFB-8D0CD7EE92DA + MODULE_TYPE = DXE_DRIVER + VERSION_STRING = 1.0 + + ENTRY_POINT = 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..6db717b829 --- /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) 2023, Loongson Technology Corporation Limited. All rights reserved.
+// +// SPDX-License-Identifier: BSD-2-Clause-Patent +// +// **/ + + +#string STR_MODULE_ABSTRACT #language en-US "CPU driver installs 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..562ae484ac --- /dev/null +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.c @@ -0,0 +1,544 @@ +/** @file + CPU DXE Module to produce CPU MP Protocol. + + Copyright (c) 2023, Loongson Technology Corporation Limited. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#include "CpuDxe.h" +#include "CpuMp.h" + +EFI_HANDLE mMpServiceHandle = NULL; +UINTN mNumberOfProcessors = 1; + +EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = { + 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 boot. + 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 instant + 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 returned. + 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_SERVICES_PROTOCOL + instance. + @param[out] NumberOfProcessors Pointer to the total number of logical + processors in the system, including the BSP + and disabled APs. + @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical + processors that exist in system, including + the BSP. + + @retval EFI_SUCCESS The number of logical processors and enabled + 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 == NULL) || (NumberOfEnabledProcessors == 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 BSP. + + This service retrieves detailed MP-related information about any processor + 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_PROTOCOL + 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 specified 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. APs can + run either simultaneously or one at a time in sequence. This service supports + 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 returned + immediately and Procedure is not started on any AP. + + If SingleThread is TRUE, all the enabled APs execute the function specified 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 until all + APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking + mode, and the BSP returns from this service without waiting for APs. If 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 APs return + from Procedure, then Procedure on the failed APs is terminated. All enabled 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 Procedure 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 and 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 run in + parallel are limited to certain independent tasks and well-controlled exclusive + code. EFI services and protocols may not be called by APs unless otherwise + 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 and 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-blocking + mode creates WaitEvent by calling the EFI CreateEvent() service. The caller + invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent + is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests + the function specified by Procedure to be started on all the enabled APs, + and releases the BSP to continue with other tasks. + -# The caller can use the CheckEvent() and WaitForEvent() services to check + the state of the WaitEvent created in step 1. + -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP + Service signals WaitEvent by calling the EFI SignalEvent() function. If + FailedCpuList is not NULL, its content is available when WaitEvent is + signaled. If all APs returned from Procedure prior to the timeout, then + FailedCpuList is set to NULL. If not all APs return from Procedure before + the timeout, then FailedCpuList is filled in with the list of the failed + APs. The buffer is allocated by MP Service Protocol using AllocatePool(). + It is the caller's responsibility to free the buffer with FreePool() 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 FailedCpuList + can be examined to determine which APs did not complete the specified task + prior to the timeout. + + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL + instance. + @param[in] Procedure A pointer to the function to be run on + enabled APs of the system. See type + EFI_AP_PROCEDURE. + @param[in] SingleThread If TRUE, then all the enabled APs execute + the function specified by Procedure one by + one, in ascending order of processor handle + number. If FALSE, then all the enabled APs + execute the function specified by Procedure + simultaneously. + @param[in] WaitEvent The event created by the caller with CreateEvent() + service. If it is NULL, then execute in + blocking mode. BSP waits until all APs finish + or TimeoutInMicroseconds expires. If it's + not NULL, then execute in non-blocking mode. + BSP requests the function specified by + Procedure to be started on all the enabled + APs, and go on executing immediately. If + all return from Procedure, or TimeoutInMicroseconds + expires, this event is signaled. The BSP + can use the CheckEvent() or WaitForEvent() + services to check the state of event. Type + EFI_EVENT is defined in CreateEvent() in + the Unified Extensible Firmware Interface + Specification. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + APs to return from Procedure, either for + blocking or non-blocking mode. Zero means + infinity. If the timeout expires before + all APs return from Procedure, then Procedure + on the failed APs is terminated. All enabled + APs are available for next function assigned + by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() + or EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). + If the timeout expires in blocking mode, + BSP returns EFI_TIMEOUT. If the timeout + expires in non-blocking mode, WaitEvent + is signaled with SignalEvent(). + @param[in] ProcedureArgument The parameter passed into Procedure for + all APs. + @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise, + if all APs finish successfully, then its + content is set to NULL. If not all APs + finish before timeout expires, then its + content is set to address of the buffer + holding handle numbers of the failed APs. + The buffer is allocated by MP Service Protocol, + and it's the caller's responsibility to + free the buffer with FreePool() service. + In blocking mode, it is ready for consumption + when the call returns. In non-blocking mode, + it is ready when WaitEvent is signaled. The + list of failed CPU is terminated by + END_OF_CPU_LIST. + + @retval EFI_SUCCESS In blocking mode, all APs have finished before + the timeout expired. + @retval EFI_SUCCESS In non-blocking mode, function has been dispatched + to all enabled APs. + @retval EFI_UNSUPPORTED A non-blocking mode request was made after the + UEFI event EFI_EVENT_GROUP_READY_TO_BOOT 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-provided + function. The caller can request the BSP to either wait for the completion + 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 specified by + Procedure passing in the argument specified by ProcedureArgument. If WaitEvent + is NULL, execution is in blocking mode. The BSP waits until the AP finishes or + TimeoutInMicroSecondss expires. Otherwise, execution is in non-blocking mode. + BSP proceeds to the next task without waiting for the AP. If 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 the AP returns + from Procedure, then execution of Procedure by the AP is terminated. The 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_PROTOCOL + instance. + @param[in] Procedure A pointer to the function to be run on the + designated AP of the system. See type + EFI_AP_PROCEDURE. + @param[in] ProcessorNumber The handle number of the AP. The range is + from 0 to the total number of logical + processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + @param[in] WaitEvent The event created by the caller with CreateEvent() + service. If it is NULL, then execute in + blocking mode. BSP waits until this AP finish + or TimeoutInMicroSeconds expires. If it's + not NULL, then execute in non-blocking mode. + BSP requests the function specified by + Procedure to be started on this AP, + and go on executing immediately. If this AP + return from Procedure or TimeoutInMicroSeconds + expires, this event is signaled. The BSP + can use the CheckEvent() or WaitForEvent() + services to check the state of event. Type + EFI_EVENT is defined in CreateEvent() in + the Unified Extensible Firmware Interface + Specification. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + this AP to finish this Procedure, either for + blocking or non-blocking mode. Zero means + infinity. If the timeout expires before + this AP returns from Procedure, then Procedure + on the AP is terminated. The + AP is available for next function assigned + by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() + or EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). + If the timeout expires in blocking mode, + BSP returns EFI_TIMEOUT. If the timeout + expires in non-blocking mode, WaitEvent + is signaled with SignalEvent(). + @param[in] ProcedureArgument The parameter passed into Procedure on the + specified AP. + @param[out] Finished If NULL, this parameter is ignored. In + blocking mode, this parameter is ignored. + In non-blocking mode, if AP returns from + Procedure before the timeout expires, 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 finished 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_BOOT 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 specified 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 over the + execution of the old BSP and continue seamlessly from where the old one 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, 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 number of + logical processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an + enabled AP. Otherwise, it will be disabled. + + @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 specified 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 onward. + 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 Health. If + an AP is being disabled, then the state of the disabled AP is implementation + 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 be 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 of + logical processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + @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 specifies + the new health status of the AP. This flag + 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 parameter + is ignored. + + @retval EFI_SUCCESS The specified AP was enabled or disabled 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 processor. + The returned value is in the range from 0 to the total number of logical + processors minus 1. The total number of logical processors can be retrieved + 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 returned 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 of + logical processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + + @retval EFI_SUCCESS The current processor handle number was 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 = MpInitLibInitialize (); + ASSERT_EFI_ERROR (Status); + + MpInitLibGetNumberOfProcessors (&NumberOfProcessors, &NumberOfEnabledProcessors); + mNumberOfProcessors = NumberOfProcessors; + DEBUG ((DEBUG_INFO, "Detect CPU count: %d\n", mNumberOfProcessors)); + + Status = 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..7994305206 --- /dev/null +++ b/UefiCpuPkg/CpuDxeLoongArch64/CpuMp.h @@ -0,0 +1,471 @@ +/** @file + CPU DXE MP support + + Copyright (c) 2023, Loongson Technology Corporation Limited. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef CPU_MP_H_ +#define CPU_MP_H_ + +#define SMP_BOOT_CPU BIT0 + +/** + 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 boot. + 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 instant + 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 returned. + 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_SERVICES_PROTOCOL + instance. + @param[out] NumberOfProcessors Pointer to the total number of logical + processors in the system, including the BSP + and disabled APs. + @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical + processors that exist in system, including + the BSP. + + @retval EFI_SUCCESS The number of logical processors and enabled + 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 BSP. + + This service retrieves detailed MP-related information about any processor + 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_PROTOCOL + 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 specified 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. APs can + run either simultaneously or one at a time in sequence. This service supports + 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 returned + immediately and Procedure is not started on any AP. + + If SingleThread is TRUE, all the enabled APs execute the function specified 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 until all + APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking + mode, and the BSP returns from this service without waiting for APs. If 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 APs return + from Procedure, then Procedure on the failed APs is terminated. All enabled 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 Procedure 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 and 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 run in + parallel are limited to certain independent tasks and well-controlled exclusive + code. EFI services and protocols may not be called by APs unless otherwise + 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 and 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-blocking + mode creates WaitEvent by calling the EFI CreateEvent() service. The caller + invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent + is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests + the function specified by Procedure to be started on all the enabled APs, + and releases the BSP to continue with other tasks. + -# The caller can use the CheckEvent() and WaitForEvent() services to check + the state of the WaitEvent created in step 1. + -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP + Service signals WaitEvent by calling the EFI SignalEvent() function. If + FailedCpuList is not NULL, its content is available when WaitEvent is + signaled. If all APs returned from Procedure prior to the timeout, then + FailedCpuList is set to NULL. If not all APs return from Procedure before + the timeout, then FailedCpuList is filled in with the list of the failed + APs. The buffer is allocated by MP Service Protocol using AllocatePool(). + It is the caller's responsibility to free the buffer with FreePool() 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 FailedCpuList + can be examined to determine which APs did not complete the specified task + prior to the timeout. + + @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL + instance. + @param[in] Procedure A pointer to the function to be run on + enabled APs of the system. See type + EFI_AP_PROCEDURE. + @param[in] SingleThread If TRUE, then all the enabled APs execute + the function specified by Procedure one by + one, in ascending order of processor handle + number. If FALSE, then all the enabled APs + execute the function specified by Procedure + simultaneously. + @param[in] WaitEvent The event created by the caller with CreateEvent() + service. If it is NULL, then execute in + blocking mode. BSP waits until all APs finish + or TimeoutInMicroseconds expires. If it's + not NULL, then execute in non-blocking mode. + BSP requests the function specified by + Procedure to be started on all the enabled + APs, and go on executing immediately. If + all return from Procedure, or TimeoutInMicroseconds + expires, this event is signaled. The BSP + can use the CheckEvent() or WaitForEvent() + services to check the state of event. Type + EFI_EVENT is defined in CreateEvent() in + the Unified Extensible Firmware Interface + Specification. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + APs to return from Procedure, either for + blocking or non-blocking mode. Zero means + infinity. If the timeout expires before + all APs return from Procedure, then Procedure + on the failed APs is terminated. All enabled + APs are available for next function assigned + by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() + or EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). + If the timeout expires in blocking mode, + BSP returns EFI_TIMEOUT. If the timeout + expires in non-blocking mode, WaitEvent + is signaled with SignalEvent(). + @param[in] ProcedureArgument The parameter passed into Procedure for + all APs. + @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise, + if all APs finish successfully, then its + content is set to NULL. If not all APs + finish before timeout expires, then its + content is set to address of the buffer + holding handle numbers of the failed APs. + The buffer is allocated by MP Service Protocol, + and it's the caller's responsibility to + free the buffer with FreePool() service. + In blocking mode, it is ready for consumption + when the call returns. In non-blocking mode, + it is ready when WaitEvent is signaled. The + list of failed CPU is terminated by + END_OF_CPU_LIST. + + @retval EFI_SUCCESS In blocking mode, all APs have finished before + the timeout expired. + @retval EFI_SUCCESS In non-blocking mode, function has been dispatched + to all enabled APs. + @retval EFI_UNSUPPORTED A non-blocking mode request was made after the + UEFI event EFI_EVENT_GROUP_READY_TO_BOOT 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-provided + function. The caller can request the BSP to either wait for the completion + 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 specified by + Procedure passing in the argument specified by ProcedureArgument. If WaitEvent + is NULL, execution is in blocking mode. The BSP waits until the AP finishes or + TimeoutInMicroSecondss expires. Otherwise, execution is in non-blocking mode. + BSP proceeds to the next task without waiting for the AP. If 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 the AP returns + from Procedure, then execution of Procedure by the AP is terminated. The 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_PROTOCOL + instance. + @param[in] Procedure A pointer to the function to be run on + enabled APs of the system. See type + EFI_AP_PROCEDURE. + @param[in] ProcessorNumber The handle number of the AP. The range is + from 0 to the total number of logical + processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + @param[in] WaitEvent The event created by the caller with CreateEvent() + service. If it is NULL, then execute in + blocking mode. BSP waits until all APs finish + or TimeoutInMicroseconds expires. If it's + not NULL, then execute in non-blocking mode. + BSP requests the function specified by + Procedure to be started on all the enabled + APs, and go on executing immediately. If + all return from Procedure or TimeoutInMicroseconds + expires, this event is signaled. The BSP + can use the CheckEvent() or WaitForEvent() + services to check the state of event. Type + EFI_EVENT is defined in CreateEvent() in + the Unified Extensible Firmware Interface + Specification. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + APs to return from Procedure, either for + blocking or non-blocking mode. Zero means + infinity. If the timeout expires before + all APs return from Procedure, then Procedure + on the failed APs is terminated. All enabled + APs are available for next function assigned + by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() + or EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). + If the timeout expires in blocking mode, + BSP returns EFI_TIMEOUT. If the timeout + expires in non-blocking mode, WaitEvent + is signaled with SignalEvent(). + @param[in] ProcedureArgument The parameter passed into Procedure for + all APs. + @param[out] Finished If NULL, this parameter is ignored. In + blocking mode, this parameter is ignored. + In non-blocking mode, if AP returns from + Procedure before the timeout expires, 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 finished 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_BOOT 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 specified 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 over the + execution of the old BSP and continue seamlessly from where the old one 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, 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 number of + logical processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an + enabled AP. Otherwise, it will be disabled. + + @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 specified 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 onward. + 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 Health. If + an AP is being disabled, then the state of the disabled AP is implementation + 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 be 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 number of + logical processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + @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 specifies + the new health status of the AP. This flag + 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 parameter + is ignored. + + @retval EFI_SUCCESS The specified AP was enabled or disabled 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 processor. + The returned value is in the range from 0 to the total number of logical + processors minus 1. The total number of logical processors can be retrieved + 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 returned 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 number of + logical processors minus 1. The total number of + logical processors can be retrieved by + EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). + + @retval EFI_SUCCESS The current processor handle number was 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..fc3823570f --- /dev/null +++ b/UefiCpuPkg/CpuDxeLoongArch64/Exception.c @@ -0,0 +1,150 @@ +/** @file Exception.c + + CPU DXE Module initialization exception instance. + + Copyright (c) 2023, Loongson Technology Corporation Limited. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#include "CpuDxe.h" +#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 InterruptHandler 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 exception. + + @param InterruptType A pointer to the processor's current interrupt state. Set to TRUE if interrupts + are enabled and FALSE if interrupts are disabled. + @param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called + when a processor interrupt occurs. If this parameter 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 down. + @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 = (UINTN)ExceptionEntryEnd - (UINTN)ExceptionEntryStart; + + // + // A vector is up to 512 bytes. + // + MaxSizeOfVector = 512; + MaxLength = (MAX_LOONGARCH_EXCEPTION + MAX_LOONGARCH_INTERRUPT) * MaxSizeOfVector; + + if (VectorLength > MaxLength) { + return EFI_OUT_OF_RESOURCES; + } + + ExceptionStartEntry = PcdGet64 (PcdCpuExceptionVectorBaseAddress); + + InvalidateInstructionCacheRange ((VOID *)ExceptionStartEntry, VectorLength); + CopyMem ((VOID *)ExceptionStartEntry, (VOID *)ExceptionEntryStart, VectorLength); + InvalidateInstructionCacheRange ((VOID *)ExceptionStartEntry, VectorLength); + InvalidateDataCache (); + + 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 = (EFI_VECTOR_HANDOFF_INFO *)NULL; + Status = EfiGetSystemConfigurationTable (&gEfiVectorHandoffTableGuid, (VOID **)&VectorInfoList); + + if ((Status == EFI_SUCCESS) && (VectorInfoList != NULL)) { + VectorInfo = VectorInfoList; + } + + // + // Disable interrupts + // + Cpu->GetInterruptState (Cpu, &IrqEnabled); + if (IrqEnabled) { + Cpu->DisableInterrupt (Cpu); + } + + // + // Update the Exception Start Entry code to point into CpuDxe. + // + Status = 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 = InitializeCpuExceptionHandlers (VectorInfo); + ASSERT_EFI_ERROR (Status); + + // + // Enable interrupts + // + DebugPrint (EFI_D_INFO, "InitializeExceptions,IrqEnabled = %x\n", IrqEnabled); + if (!IrqEnabled) { + Status = Cpu->EnableInterrupt (Cpu); + } + + ASSERT_EFI_ERROR (Status); +} diff --git a/UefiCpuPkg/UefiCpuPkg.dsc b/UefiCpuPkg/UefiCpuPkg.dsc index da49031877..15854dafef 100644 --- a/UefiCpuPkg/UefiCpuPkg.dsc +++ b/UefiCpuPkg/UefiCpuPkg.dsc @@ -213,6 +213,7 @@ UefiCpuPkg/Library/LoongArch64CpuMmuLib/DxeCpuMmuLib.inf UefiCpuPkg/Library/LoongArch64MpInitLib/PeiMpInitLib.inf UefiCpuPkg/Library/LoongArch64MpInitLib/DxeMpInitLib.inf + UefiCpuPkg/CpuDxeLoongArch64/CpuDxe.inf [BuildOptions] *_*_*_CC_FLAGS = -D DISABLE_NEW_DEPRECATED_INTERFACES -- 2.27.0 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#112406): https://edk2.groups.io/g/devel/message/112406 Mute This Topic: https://groups.io/mt/103129102/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=-=-=-=-=-=-=-=-=-=-=-