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 71B07740045 for ; Tue, 12 Dec 2023 13:14:40 +0000 (UTC) DKIM-Signature: a=rsa-sha256; bh=q6OFYpxn2oIHsByjM9Ll30d0POM1gaoenwXk6Bn4jDo=; 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=1702386879; v=1; b=OE4QBgac7HRGvHsdCfgC4bmv7xOgIQIJ5EmnwenVrVNFXKO0uluBgLwc/l6bGg9Lw9rU91mX QpRZrPU9hPA24HSplWBc1rvNY4N/HhMyQAsEvLcyfx6bbL3HQow83NJve2/+UCxCY3XZQTRMRSD KJ9M2FtjmEcAOUtXVwsdZTXA= X-Received: by 127.0.0.2 with SMTP id zfdzYY7687511xC8FDOUu2YY; Tue, 12 Dec 2023 05:14:39 -0800 X-Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by mx.groups.io with SMTP id smtpd.web10.1332.1702386877757113416 for ; Tue, 12 Dec 2023 05:14:38 -0800 X-Received: from loongson.cn (unknown [10.2.9.245]) by gateway (Coremail) with SMTP id _____8CxhfC5XHhlOFoAAA--.2128S3; Tue, 12 Dec 2023 21:14:33 +0800 (CST) X-Received: from code-server.gen (unknown [10.2.9.245]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxPeG4XHhlBaUAAA--.4662S2; Tue, 12 Dec 2023 21:14:32 +0800 (CST) From: "Chao Li" To: devel@edk2.groups.io Cc: Ard Biesheuvel , Jiewen Yao , Jordan Justen , Gerd Hoffmann , Xianglai Li , Bibo Mao Subject: [edk2-devel] [PATCH v4 34/37] OvmfPkg/LoongArchVirt: Support SEC phase Date: Tue, 12 Dec 2023 21:14:31 +0800 Message-Id: <20231212131431.2472180-1-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: AQAAf8AxPeG4XHhlBaUAAA--.4662S2 X-CM-SenderInfo: xolfxt3r6o00pqjv00gofq/1tbiAQADCGV3wy0H6gA0sv 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: KoGmarLwwxu7HfSljhXx7jaox7686176AA= 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=OE4QBgac; 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 Add SEC code for LoongArch virtual machine. BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 Cc: Ard Biesheuvel Cc: Jiewen Yao Cc: Jordan Justen Cc: Gerd Hoffmann Signed-off-by: Chao Li Co-authored-by: Xianglai Li Co-authored-by: Bibo Mao --- OvmfPkg/LoongArchVirt/Sec/LoongArch64/Start.S | 176 ++++++ OvmfPkg/LoongArchVirt/Sec/SecMain.c | 507 ++++++++++++++++++ OvmfPkg/LoongArchVirt/Sec/SecMain.inf | 53 ++ 3 files changed, 736 insertions(+) create mode 100644 OvmfPkg/LoongArchVirt/Sec/LoongArch64/Start.S create mode 100644 OvmfPkg/LoongArchVirt/Sec/SecMain.c create mode 100644 OvmfPkg/LoongArchVirt/Sec/SecMain.inf diff --git a/OvmfPkg/LoongArchVirt/Sec/LoongArch64/Start.S b/OvmfPkg/LoongArchVirt/Sec/LoongArch64/Start.S new file mode 100644 index 0000000000..21cc9f3388 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Sec/LoongArch64/Start.S @@ -0,0 +1,176 @@ +#------------------------------------------------------------------------------ +# +# Start for Loongson LoongArch processor +# +# Copyright (c) 2023 Loongson Technology Corporation Limited. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +# @par Glossary: +# - CSR - CPU Status Register +# - EBASE - Exception Base Address +#------------------------------------------------------------------------------ +#ifndef __ASSEMBLY__ +#define __ASSEMBLY__ +#endif + +#include +#include +#include + +#define BOOTCORE_ID 0 + +ASM_GLOBAL ASM_PFX(_ModuleEntryPoint) +ASM_PFX(_ModuleEntryPoint): + /* Disable interrupt */ + li.d $t0, (1 << 2) + csrxchg $zero, $t0, LOONGARCH_CSR_CRMD + + /* Read physical cpu number id */ + bl GetApicId + li.d $t0, BOOTCORE_ID //0 + bne $a0, $t0, SlaveMain + + /* Configure BSP reset ebase */ + li.d $a0, FixedPcdGet64(PcdCpuExceptionVectorBaseAddress) + bl SetExceptionBaseAddress + move $t1, $a0 + + /* Set BSP stack */ + li.d $t0, FixedPcdGet64(PcdOvmfSecPeiTempRamBase) + FixedPcdGet32(PcdOvmfSecPeiTempRamSize) # stack base + move $sp, $t0 + addi.d $sp, $sp, -0x8 + + /* Construct SEC and PEI step exception environment */ + la.pcrel $a1, ExceptionEntryStart + la.pcrel $t0, ExceptionEntryEnd + sub.d $a2, $t0, $a1 + li.w $t0, (MAX_LOONGARCH_EXCEPTION + MAX_LOONGARCH_INTERRUPT) * 512 + bgeu $a2, $t0, DeadLoop + move $a0, $t1 + bl CopyMem + +CallEntry: + /* Call C function make sure parameter true */ + li.d $a0, FixedPcdGet64(PcdOvmfFdBaseAddress) # FW base + addi.d $a1, $sp, 0x8 + bl SecCoreStartupWithStack +# End of _ModuleEntryPoint + +ASM_PFX(ClearMailBox): + /* Clear mailbox */ + li.d $t1, LOONGARCH_IOCSR_MBUF3 + iocsrwr.d $zero, $t1 + li.d $t1, LOONGARCH_IOCSR_MBUF2 + iocsrwr.d $zero, $t1 + li.d $t1, LOONGARCH_IOCSR_MBUF1 + iocsrwr.d $zero, $t1 + li.d $t1, LOONGARCH_IOCSR_MBUF0 + iocsrwr.d $zero, $t1 + jirl $zero, $ra, 0 +# End of ClearMailBox + +ASM_PFX(EnableIPI): + /* Enable IPI interrupt */ + li.d $t1, (1 << 12) + csrxchg $t1, $t1, LOONGARCH_CSR_ECFG + + addi.d $t2, $zero, -1 + li.d $t1, LOONGARCH_IOCSR_IPI_EN + iocsrwr.w $t2, $t1 + jirl $zero, $ra, 0 +# End of EeableIPI + +#/** +# Get APIC ID for every CPU. +# +# @param NULL +# @return APICID +# +# UINTN +# EFI_API +# GetApicId ( +# VOID +# ) +#**/ +ASM_PFX(GetApicId): + csrrd $a0, LOONGARCH_CSR_CPUNUM + andi $a0, $a0, 0x3ff + jirl $zero, $ra, 0 +# End of GetApicId + +ASM_PFX(ApInitStack): + li.d $t1, SIZE_1KB + csrrd $t0, LOONGARCH_CSR_TMID + mul.d $t1, $t0, $t1 + li.d $t2, FixedPcdGet32(PcdCpuMaxLogicalProcessorNumber) + bgeu $t0, $t2, DeadLoop + li.d $t0, FixedPcdGet64(PcdOvmfSecPeiTempRamBase) + FixedPcdGet32(PcdOvmfSecPeiTempRamSize) - SIZE_64KB + sub.d $sp, $t0, $t1 + addi.d $sp, $sp, -0x8 + jirl $zero, $ra, 0 +# End of ApInitStack + +ASM_PFX(SlaveMain): + /* Set AP exception handle in flash */ + la.pcrel $a0, ApException + bl SetExceptionBaseAddress + + /* Clean up local mail box and open INT */ + bl ClearMailBox + bl EnableIPI + bl EnableInterrupts + +WaitForWake: + /* Wait for wakeup */ + bl CpuSleep + li.d $t1, LOONGARCH_IOCSR_MBUF0 + iocsrrd.w $t2, $t1 + beqz $t2, WaitForWake + + /* Disable global interrupt */ + bl DisableInterrupts + + /* Disable IPI interrupt */ + li.d $t0, (1 << 12) + csrxchg $zero, $t0, LOONGARCH_CSR_ECFG + + /* Read mail buf and jump to specified entry */ + li.d $t1, LOONGARCH_IOCSR_MBUF0 + iocsrrd.d $t0, $t1 + li.d $t1, LOONGARCH_IOCSR_MBUF3 + iocsrrd.d $a1, $t1 + bl ClearMailBox + beqz $a1, NoParameterCall + + // + // If the parameters are not NULL, then calling happened in FW ENV. + // Set the EBASE to be the same as BSP. + // + li.d $a0, FixedPcdGet64(PcdCpuExceptionVectorBaseAddress) + bl SetExceptionBaseAddress + + bl ApInitStack + bl GetApicId +NoParameterCall: + move $ra, $t0 + jirl $zero, $ra, 0x0 +# End of SlaveMain + +.align 12 +ASM_PFX(ApException): + csrrd $t0, LOONGARCH_CSR_ESTAT + srli.d $t0, $t0, 12 + beqz $t0, DeadLoop + + li.d $t0, LOONGARCH_IOCSR_IPI_STATUS + iocsrrd.w $t1, $t0 + li.d $t0, LOONGARCH_IOCSR_IPI_CLEAR + iocsrwr.w $t1, $t0 + ertn +# End of ApException + +ASM_PFX(DeadLoop): + b DeadLoop +# End of DeadLoop +.end diff --git a/OvmfPkg/LoongArchVirt/Sec/SecMain.c b/OvmfPkg/LoongArchVirt/Sec/SecMain.c new file mode 100644 index 0000000000..0abc524bc0 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Sec/SecMain.c @@ -0,0 +1,507 @@ +/** @file + Main SEC phase code. Transitions to PEI. + + Copyright (c) 2023 Loongson Technology Corporation Limited. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +/** + temporary memory to permanent memory and do stack switching. + + @param[in] PeiServices Pointer to the PEI Services Table. + @param[in] TemporaryMemoryBase Temporary Memory Base address. + @param[in] PermanentMemoryBase Permanent Memory Base address. + @param[in] CopySize The size of memory that needs to be migrated. + + @retval EFI_SUCCESS Migration successful. +**/ +EFI_STATUS +EFIAPI +TemporaryRamMigration ( + IN CONST EFI_PEI_SERVICES **PeiServices, + IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase, + IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase, + IN UINTN CopySize + ); + +EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI mTemporaryRamSupportPpi = { + TemporaryRamMigration +}; + +EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTable[] = { + { + (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), + &gEfiTemporaryRamSupportPpiGuid, + &mTemporaryRamSupportPpi + }, +}; + +/** + Locates a section within a series of sections + with the specified section type. + + The Instance parameter indicates which instance of the section + type to return. (0 is first instance, 1 is second...) + + @param[in] Sections The sections to search + @param[in] SizeOfSections Total size of all sections + @param[in] SectionType The section type to locate + @param[in] Instance The section instance number + @param[out] FoundSection The FFS section if found + + @retval EFI_SUCCESS The file and section was found + @retval EFI_NOT_FOUND The file and section was not found + @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted +**/ +EFI_STATUS +FindFfsSectionInstance ( + IN VOID *Sections, + IN UINTN SizeOfSections, + IN EFI_SECTION_TYPE SectionType, + IN UINTN Instance, + OUT EFI_COMMON_SECTION_HEADER **FoundSection + ) +{ + EFI_PHYSICAL_ADDRESS CurrentAddress; + UINT32 Size; + EFI_PHYSICAL_ADDRESS EndOfSections; + EFI_COMMON_SECTION_HEADER *Section; + EFI_PHYSICAL_ADDRESS EndOfSection; + + // + // Loop through the FFS file sections within the PEI Core FFS file + // + EndOfSection = (EFI_PHYSICAL_ADDRESS)(UINTN)Sections; + EndOfSections = EndOfSection + SizeOfSections; + for ( ; ; ) { + if (EndOfSection == EndOfSections) { + break; + } + + CurrentAddress = (EndOfSection + 3) & ~(3ULL); + if (CurrentAddress >= EndOfSections) { + return EFI_VOLUME_CORRUPTED; + } + + Section = (EFI_COMMON_SECTION_HEADER *)(UINTN)CurrentAddress; + + Size = SECTION_SIZE (Section); + if (Size < sizeof (*Section)) { + return EFI_VOLUME_CORRUPTED; + } + + EndOfSection = CurrentAddress + Size; + if (EndOfSection > EndOfSections) { + return EFI_VOLUME_CORRUPTED; + } + + // + // Look for the requested section type + // + if (Section->Type == SectionType) { + if (Instance == 0) { + *FoundSection = Section; + return EFI_SUCCESS; + } else { + Instance--; + } + } + } + + return EFI_NOT_FOUND; +} + +/** + Locates a section within a series of sections + with the specified section type. + + @param[in] Sections The sections to search + @param[in] SizeOfSections Total size of all sections + @param[in] SectionType The section type to locate + @param[out] FoundSection The FFS section if found + + @retval EFI_SUCCESS The file and section was found + @retval EFI_NOT_FOUND The file and section was not found + @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted +**/ +EFI_STATUS +FindFfsSectionInSections ( + IN VOID *Sections, + IN UINTN SizeOfSections, + IN EFI_SECTION_TYPE SectionType, + OUT EFI_COMMON_SECTION_HEADER **FoundSection + ) +{ + return FindFfsSectionInstance ( + Sections, + SizeOfSections, + SectionType, + 0, + FoundSection + ); +} + +/** + Locates a FFS file with the specified file type and a section + within that file with the specified section type. + + @param[in] Fv The firmware volume to search + @param[in] FileType The file type to locate + @param[in] SectionType The section type to locate + @param[out] FoundSection The FFS section if found + + @retval EFI_SUCCESS The file and section was found + @retval EFI_NOT_FOUND The file and section was not found + @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted +**/ +EFI_STATUS +FindFfsFileAndSection ( + IN EFI_FIRMWARE_VOLUME_HEADER *Fv, + IN EFI_FV_FILETYPE FileType, + IN EFI_SECTION_TYPE SectionType, + OUT EFI_COMMON_SECTION_HEADER **FoundSection + ) +{ + EFI_STATUS Status; + EFI_PHYSICAL_ADDRESS CurrentAddress; + EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume; + EFI_FFS_FILE_HEADER *File; + UINT32 Size; + EFI_PHYSICAL_ADDRESS EndOfFile; + + if (Fv->Signature != EFI_FVH_SIGNATURE) { + DEBUG ((DEBUG_ERROR, "FV at %p does not have FV header signature\n", Fv)); + return EFI_VOLUME_CORRUPTED; + } + + CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Fv; + EndOfFirmwareVolume = CurrentAddress + Fv->FvLength; + + // + // Loop through the FFS files in the Boot Firmware Volume + // + for (EndOfFile = CurrentAddress + Fv->HeaderLength; ; ) { + CurrentAddress = (EndOfFile + 7) & ~(7ULL); + if (CurrentAddress > EndOfFirmwareVolume) { + return EFI_VOLUME_CORRUPTED; + } + + File = (EFI_FFS_FILE_HEADER *)(UINTN)CurrentAddress; + Size = *(UINT32 *)File->Size & 0xffffff; + if (Size < (sizeof (*File) + sizeof (EFI_COMMON_SECTION_HEADER))) { + return EFI_VOLUME_CORRUPTED; + } + + EndOfFile = CurrentAddress + Size; + if (EndOfFile > EndOfFirmwareVolume) { + return EFI_VOLUME_CORRUPTED; + } + + // + // Look for the request file type + // + if (File->Type != FileType) { + continue; + } + + Status = FindFfsSectionInSections ( + (VOID *)(File + 1), + (UINTN)EndOfFile - (UINTN)(File + 1), + SectionType, + FoundSection + ); + if (!EFI_ERROR (Status) || + (Status == EFI_VOLUME_CORRUPTED)) + { + return Status; + } + } +} + +/** + Locates the PEI Core entry point address + + @param[in] Fv The firmware volume to search + @param[out] PeiCoreEntryPoint The entry point of the PEI Core image + + @retval EFI_SUCCESS The file and section was found + @retval EFI_NOT_FOUND The file and section was not found + @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted +**/ +EFI_STATUS +FindPeiCoreImageBaseInFv ( + IN EFI_FIRMWARE_VOLUME_HEADER *Fv, + OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase + ) +{ + EFI_STATUS Status; + EFI_COMMON_SECTION_HEADER *Section; + + Status = FindFfsFileAndSection ( + Fv, + EFI_FV_FILETYPE_PEI_CORE, + EFI_SECTION_PE32, + &Section + ); + if (EFI_ERROR (Status)) { + Status = FindFfsFileAndSection ( + Fv, + EFI_FV_FILETYPE_PEI_CORE, + EFI_SECTION_TE, + &Section + ); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "Unable to find PEI Core image\n")); + return Status; + } + } + + *PeiCoreImageBase = (EFI_PHYSICAL_ADDRESS)(UINTN)(Section + 1); + return EFI_SUCCESS; +} + +/** + Find and return Pei Core entry point. + + It also find SEC and PEI Core file debug information. It will report them if + remote debug is enabled. +**/ +VOID +FindAndReportEntryPoints ( + IN EFI_FIRMWARE_VOLUME_HEADER **BootFirmwareVolumePtr, + OUT EFI_PEI_CORE_ENTRY_POINT *PeiCoreEntryPoint + ) +{ + EFI_STATUS Status; + EFI_PHYSICAL_ADDRESS PeiCoreImageBase = 0; + PE_COFF_LOADER_IMAGE_CONTEXT ImageContext; + + Status = FindPeiCoreImageBaseInFv (*BootFirmwareVolumePtr, &PeiCoreImageBase); + ASSERT (Status == EFI_SUCCESS); + + ZeroMem ((VOID *)&ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT)); + + // + // Report PEI Core debug information when remote debug is enabled + // + ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)PeiCoreImageBase; + ImageContext.PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *)(UINTN)ImageContext.ImageAddress); + PeCoffLoaderRelocateImageExtraAction (&ImageContext); + + // + // Find PEI Core entry point + // + Status = PeCoffLoaderGetEntryPoint ((VOID *)(UINTN)PeiCoreImageBase, (VOID **)PeiCoreEntryPoint); + if (EFI_ERROR (Status)) { + *PeiCoreEntryPoint = 0; + } + + return; +} + +/** + Find the peicore entry point and jump to the entry point to execute. + + @param[in] Context The first input parameter of InitializeDebugAgent(). +**/ +VOID +EFIAPI +SecStartupPhase2 ( + IN VOID *Context + ) +{ + EFI_SEC_PEI_HAND_OFF *SecCoreData; + EFI_FIRMWARE_VOLUME_HEADER *BootFv; + EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint; + + SecCoreData = (EFI_SEC_PEI_HAND_OFF *)Context; + + // + // Find PEI Core entry point. It will report SEC and Pei Core debug information if remote debug + // is enabled. + // + BootFv = (EFI_FIRMWARE_VOLUME_HEADER *)SecCoreData->BootFirmwareVolumeBase; + FindAndReportEntryPoints (&BootFv, &PeiCoreEntryPoint); + SecCoreData->BootFirmwareVolumeBase = BootFv; + SecCoreData->BootFirmwareVolumeSize = (UINTN)BootFv->FvLength; + + DEBUG ((DEBUG_INFO, "Find Pei EntryPoint=%p\n", PeiCoreEntryPoint)); + + // + // Transfer the control to the PEI core + // + DEBUG ((DEBUG_INFO, "SecStartupPhase2 %p\n", PeiCoreEntryPoint)); + + (*PeiCoreEntryPoint)(SecCoreData, (EFI_PEI_PPI_DESCRIPTOR *)&mPrivateDispatchTable); + + // + // If we get here then the PEI Core returned, which is not recoverable. + // + ASSERT (FALSE); + CpuDeadLoop (); +} + +/** + Entry point to the C language phase of SEC. initialize some temporary memory and set up the stack, + the control is transferred to this function. + + @param[in] BootFv The pointer to the PEI FV in memory. + @param[in] TopOfCurrentStack Top of Current Stack. +**/ +VOID +EFIAPI +SecCoreStartupWithStack ( + IN EFI_FIRMWARE_VOLUME_HEADER *BootFv, + IN VOID *TopOfCurrentStack + ) +{ + EFI_SEC_PEI_HAND_OFF SecCoreData; + EFI_FIRMWARE_VOLUME_HEADER *BootPeiFv = (EFI_FIRMWARE_VOLUME_HEADER *)BootFv; + + DEBUG ((DEBUG_INFO, "Entering C environment\n")); + + ProcessLibraryConstructorList (NULL, NULL); + + DEBUG (( + DEBUG_INFO, + "SecCoreStartupWithStack (0x%lx, 0x%lx)\n", + (UINTN)BootFv, + (UINTN)TopOfCurrentStack + )); + DEBUG (( + DEBUG_INFO, + "(0x%lx, 0x%lx)\n", + (UINTN)(FixedPcdGet64 (PcdOvmfSecPeiTempRamBase)), + (UINTN)(FixedPcdGet32 (PcdOvmfSecPeiTempRamSize)) + )); + + // |-------------| <-- TopOfCurrentStack + // | BSP Stack | 32k + // |-------------| + // | BSP Heap | 32k + // |-------------| <-- SecCoreData.TemporaryRamBase + // | Ap Stack | 384k + // |-------------| + // | Exception | 64k + // |-------------| <-- PcdOvmfSecPeiTempRamBase + + ASSERT ( + (UINTN)(FixedPcdGet64 (PcdOvmfSecPeiTempRamBase) + + FixedPcdGet32 (PcdOvmfSecPeiTempRamSize)) == + (UINTN)TopOfCurrentStack + ); + + // + // Initialize SEC hand-off state + // + SecCoreData.DataSize = sizeof (EFI_SEC_PEI_HAND_OFF); + + SecCoreData.TemporaryRamSize = (UINTN)SIZE_64KB; + SecCoreData.TemporaryRamBase = (VOID *)(FixedPcdGet64 (PcdOvmfSecPeiTempRamBase) + FixedPcdGet32 (PcdOvmfSecPeiTempRamSize) - SecCoreData.TemporaryRamSize); + + SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase; + SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize >> 1; + + SecCoreData.StackBase = (UINT8 *)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize; + SecCoreData.StackSize = SecCoreData.TemporaryRamSize >> 1; + + SecCoreData.BootFirmwareVolumeBase = BootPeiFv; + SecCoreData.BootFirmwareVolumeSize = (UINTN)BootPeiFv->FvLength; + + DEBUG (( + DEBUG_INFO, + "&SecCoreData.BootFirmwareVolumeBase=%lx SecCoreData.BootFirmwareVolumeBase=%lx\n", + (UINT64)&(SecCoreData.BootFirmwareVolumeBase), + (UINT64)(SecCoreData.BootFirmwareVolumeBase) + )); + DEBUG (( + DEBUG_INFO, + "&SecCoreData.BootFirmwareVolumeSize=%lx SecCoreData.BootFirmwareVolumeSize=%lx\n", + (UINT64)&(SecCoreData.BootFirmwareVolumeSize), + (UINT64)(SecCoreData.BootFirmwareVolumeSize) + )); + + // + // Initialize Debug Agent to support source level debug in SEC/PEI phases before memory ready. + // + InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, NULL, NULL); + SecStartupPhase2 (&SecCoreData); +} + +/** + temporary memory to permanent memory and do stack switching. + + @param[in] PeiServices Pointer to the PEI Services Table. + @param[in] TemporaryMemoryBase Temporary Memory Base address. + @param[in] PermanentMemoryBase Permanent Memory Base address. + @param[in] CopySize The size of memory that needs to be migrated. + + @retval EFI_SUCCESS Migration successful. +**/ +EFI_STATUS +EFIAPI +TemporaryRamMigration ( + IN CONST EFI_PEI_SERVICES **PeiServices, + IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase, + IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase, + IN UINTN CopySize + ) +{ + VOID *OldHeap; + VOID *NewHeap; + VOID *OldStack; + VOID *NewStack; + BASE_LIBRARY_JUMP_BUFFER JumpBuffer; + + DEBUG (( + DEBUG_INFO, + "TemporaryRamMigration (0x%Lx, 0x%Lx, 0x%Lx)\n", + TemporaryMemoryBase, + PermanentMemoryBase, + (UINT64)CopySize + )); + + OldHeap = (VOID *)(UINTN)TemporaryMemoryBase; + NewHeap = (VOID *)((UINTN)PermanentMemoryBase + (CopySize >> 1)); + + OldStack = (VOID *)((UINTN)TemporaryMemoryBase + (CopySize >> 1)); + NewStack = (VOID *)(UINTN)PermanentMemoryBase; + + // + // Migrate Heap + // + CopyMem (NewHeap, OldHeap, CopySize >> 1); + + // + // Migrate Stack + // + CopyMem (NewStack, OldStack, CopySize >> 1); + + // Use SetJump ()/LongJump () to switch to a new stack. + // + if (SetJump (&JumpBuffer) == 0) { + JumpBuffer.SP = JumpBuffer.SP - (UINTN)OldStack + (UINTN)NewStack; + LongJump (&JumpBuffer, (UINTN)-1); + } + + return EFI_SUCCESS; +} diff --git a/OvmfPkg/LoongArchVirt/Sec/SecMain.inf b/OvmfPkg/LoongArchVirt/Sec/SecMain.inf new file mode 100644 index 0000000000..c9a56f3ad2 --- /dev/null +++ b/OvmfPkg/LoongArchVirt/Sec/SecMain.inf @@ -0,0 +1,53 @@ +## @file +# SEC Driver +# +# Copyright (c) 2023 Loongson Technology Corporation Limited. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = SecMain + FILE_GUID = 57d02d4f-5a5d-4bfa-b7d6-ba0a4d2c72ce + MODULE_TYPE = SEC + VERSION_STRING = 1.0 + +# +# VALID_ARCHITECTURES = LOONGARCH64 +# + +[Sources] + LoongArch64/Start.S + SecMain.c + +[Packages] + MdePkg/MdePkg.dec + MdeModulePkg/MdeModulePkg.dec + OvmfPkg/OvmfPkg.dec + UefiCpuPkg/UefiCpuPkg.dec + +[LibraryClasses] + BaseLib + BaseMemoryLib + CpuExceptionHandlerLib + DebugAgentLib + DebugLib + IoLib + PcdLib + PeCoffLib + PeCoffGetEntryPointLib + PeCoffExtraActionLib + +[Ppis] + gEfiTemporaryRamSupportPpiGuid # PPI ALWAYS_PRODUCED + +[FixedPcd] + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPeiTempRamBase + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPeiTempRamSize + + gUefiCpuPkgTokenSpaceGuid.PcdCpuExceptionVectorBaseAddress + gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber + + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFdBaseAddress -- 2.27.0 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#112424): https://edk2.groups.io/g/devel/message/112424 Mute This Topic: https://groups.io/mt/103129158/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=-=-=-=-=-=-=-=-=-=-=-