From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f42.google.com (mail-lf1-f42.google.com [209.85.167.42]) by mx.groups.io with SMTP id smtpd.web10.6092.1626265814030207523 for ; Wed, 14 Jul 2021 05:30:14 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@semihalf-com.20150623.gappssmtp.com header.s=20150623 header.b=KihREHgH; spf=none, err=SPF record not found (domain: semihalf.com, ip: 209.85.167.42, mailfrom: gjb@semihalf.com) Received: by mail-lf1-f42.google.com with SMTP id q16so3299340lfa.5 for ; Wed, 14 Jul 2021 05:30:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=semihalf-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2I98/aY1zP+aInLViiQ9UoxWtsjtOWndKphgCe3s6w8=; b=KihREHgHTkmg32Bla61LP07KUNfoCwQcUF76n3NLZBrQITp0rcQ8OSNJZedKGpW65H ENecXcYvNVfDA40I+8QCLnOFfNcsnPAOSE5ptkk8XFETEWLTHPMDMPmaWHKR0+Cuj0tM TmClS/A8NgqmiggRG8IE95cYrkG/RZ1258OQhKU7lMXWXvpQjXbUppxviV6Sx6zp1D3d 2iy2dgsG87jiVPMMZxPKZBPyZmwyIfBCY4oi1KATztOW1wlc2vcME7kB6Uje7rWvgWko k4Yx4Qu2OnAlEMPS0ICzHKIrvppqHS7vykfqhb8k3+eImOs3csH9lFSswgwIuyI/PuTC O44g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2I98/aY1zP+aInLViiQ9UoxWtsjtOWndKphgCe3s6w8=; b=DZncLRj+XMWdOThmxnvgQiBpF+dyEDLp7+pNs9hu5eyFBPMTMcrU6SJvpaDGCqQ4Jf KargVbGoDp+9ZrVM/b680HcvbNcMlUs64AXMgZxu6cmpsMAx2v4rNmg/y+sHxDjbcZ5P 6j4LNbK40MmgQU3gSxCOQVAVP7Ym1LD1e5gaFBTp+AbgZcyAIvMJO+4O7S835jnaUXPw vZMmQvL9FdbcgOkq603sMthbOWnTxoIgLmqlSs1Asz7MN7+wD0bsR/0CpoD2miQ+fHhJ C3Y9NTiRSgjLeuvTd3YI5MMzejgXTCCEVi5G6qtGYoDzCOf1xM4GoZDzQ9hj/rroaC4n Rk+g== X-Gm-Message-State: AOAM5317nO8tfhXPq7kJ+SQQPlkZRpZzNax9VcQvWxNh9hC3oKNyAGGh r3mVwxTaAmeEf4UVUZBD3nOMVvTAN2LUU0Of X-Google-Smtp-Source: ABdhPJwFPWIixD6ZtMauvwnoT2/RpQzRvaCm2dQa5+aSasn7Ed0rShs6OXhQSJ1zN8Trww1Z4IiGNA== X-Received: by 2002:a05:6512:33d3:: with SMTP id d19mr7752353lfg.114.1626265811367; Wed, 14 Jul 2021 05:30:11 -0700 (PDT) Return-Path: Received: from gilgamesh.lab.semihalf.net ([83.142.187.85]) by smtp.gmail.com with ESMTPSA id j2sm224846ljc.49.2021.07.14.05.30.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jul 2021 05:30:10 -0700 (PDT) From: "Grzegorz Bernacki" To: devel@edk2.groups.io Cc: leif@nuviainc.com, ardb+tianocore@kernel.org, Samer.El-Haj-Mahmoud@arm.com, sunny.Wang@arm.com, mw@semihalf.com, upstream@semihalf.com, jiewen.yao@intel.com, jian.j.wang@intel.com, min.m.xu@intel.com, lersek@redhat.com, sami.mujawar@arm.com, afish@apple.com, ray.ni@intel.com, jordan.l.justen@intel.com, rebecca@bsdio.com, grehan@freebsd.org, thomas.abraham@arm.com, chasel.chiu@intel.com, nathaniel.l.desimone@intel.com, gaoliming@byosoft.com.cn, eric.dong@intel.com, michael.d.kinney@intel.com, zailiang.sun@intel.com, yi.qian@intel.com, graeme@nuviainc.com, rad@semihalf.com, pete@akeo.ie, Grzegorz Bernacki , Sunny Wang , Jiewen Yao Subject: [PATCH v6 02/11] SecurityPkg: Create library for enrolling Secure Boot variables. Date: Wed, 14 Jul 2021 14:29:43 +0200 Message-Id: <20210714122952.1340890-3-gjb@semihalf.com> X-Mailer: git-send-email 2.29.0 In-Reply-To: <20210714122952.1340890-1-gjb@semihalf.com> References: <20210714122952.1340890-1-gjb@semihalf.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This commits add library, which consist functions to enrolll Secure Boot keys and initialize Secure Boot default variables. Some of the functions was moved from SecureBootConfigImpl.c file. Signed-off-by: Grzegorz Bernacki Reviewed-by: Sunny Wang Reviewed-by: Jiewen Yao --- SecurityPkg/SecurityPkg.dsc | 1 + SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.inf | 80 ++++ SecurityPkg/Include/Library/SecureBootVariableProvisionLib.h | 134 ++++++ SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.c | 491 ++++++++++++++++++++ SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.uni | 16 + 5 files changed, 722 insertions(+) create mode 100644 SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.inf create mode 100644 SecurityPkg/Include/Library/SecureBootVariableProvisionLib.h create mode 100644 SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.c create mode 100644 SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.uni diff --git a/SecurityPkg/SecurityPkg.dsc b/SecurityPkg/SecurityPkg.dsc index 854f250625..99c227dad2 100644 --- a/SecurityPkg/SecurityPkg.dsc +++ b/SecurityPkg/SecurityPkg.dsc @@ -71,6 +71,7 @@ TcgEventLogRecordLib|SecurityPkg/Library/TcgEventLogRecordLib/TcgEventLogRecordLib.inf MmUnblockMemoryLib|MdePkg/Library/MmUnblockMemoryLib/MmUnblockMemoryLibNull.inf SecureBootVariableLib|SecurityPkg/Library/SecureBootVariableLib/SecureBootVariableLib.inf + SecureBootVariableProvisionLib|SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.inf [LibraryClasses.ARM] # diff --git a/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.inf b/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.inf new file mode 100644 index 0000000000..a09abd29ce --- /dev/null +++ b/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.inf @@ -0,0 +1,80 @@ +## @file +# Provides initialization of Secure Boot keys and databases. +# +# Copyright (c) 2021, ARM Ltd. All rights reserved.
+# Copyright (c) 2021, Semihalf All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = SecureBootVariableLib + MODULE_UNI_FILE = SecureBootVariableLib.uni + FILE_GUID = 18192DD0-9430-45F1-80C7-5C52061CD183 + MODULE_TYPE = DXE_DRIVER + VERSION_STRING = 1.0 + LIBRARY_CLASS = SecureBootVariableProvisionLib|DXE_DRIVER DXE_RUNTIME_DRIVER UEFI_APPLICATION + +# +# The following information is for reference only and not required by the build tools. +# +# VALID_ARCHITECTURES = IA32 X64 AARCH64 +# + +[Sources] + SecureBootVariableProvisionLib.c + +[Packages] + MdePkg/MdePkg.dec + MdeModulePkg/MdeModulePkg.dec + SecurityPkg/SecurityPkg.dec + CryptoPkg/CryptoPkg.dec + +[LibraryClasses] + BaseLib + BaseMemoryLib + DebugLib + MemoryAllocationLib + BaseCryptLib + DxeServicesLib + SecureBootVariableLib + +[Guids] + ## CONSUMES ## Variable:L"SetupMode" + ## PRODUCES ## Variable:L"SetupMode" + ## CONSUMES ## Variable:L"SecureBoot" + ## PRODUCES ## Variable:L"SecureBoot" + ## PRODUCES ## Variable:L"PK" + ## PRODUCES ## Variable:L"KEK" + ## CONSUMES ## Variable:L"PKDefault" + ## CONSUMES ## Variable:L"KEKDefault" + ## CONSUMES ## Variable:L"dbDefault" + ## CONSUMES ## Variable:L"dbxDefault" + ## CONSUMES ## Variable:L"dbtDefault" + gEfiGlobalVariableGuid + + ## SOMETIMES_CONSUMES ## Variable:L"DB" + ## SOMETIMES_CONSUMES ## Variable:L"DBX" + ## SOMETIMES_CONSUMES ## Variable:L"DBT" + gEfiImageSecurityDatabaseGuid + + ## CONSUMES ## Variable:L"SecureBootEnable" + ## PRODUCES ## Variable:L"SecureBootEnable" + gEfiSecureBootEnableDisableGuid + + ## CONSUMES ## Variable:L"CustomMode" + ## PRODUCES ## Variable:L"CustomMode" + gEfiCustomModeEnableGuid + + gEfiCertTypeRsa2048Sha256Guid ## CONSUMES + gEfiCertX509Guid ## CONSUMES + gEfiCertPkcs7Guid ## CONSUMES + + gDefaultPKFileGuid + gDefaultKEKFileGuid + gDefaultdbFileGuid + gDefaultdbxFileGuid + gDefaultdbtFileGuid + diff --git a/SecurityPkg/Include/Library/SecureBootVariableProvisionLib.h b/SecurityPkg/Include/Library/SecureBootVariableProvisionLib.h new file mode 100644 index 0000000000..8915d7030e --- /dev/null +++ b/SecurityPkg/Include/Library/SecureBootVariableProvisionLib.h @@ -0,0 +1,134 @@ +/** @file + Provides a functions to enroll keys based on default values. + +Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.
+(C) Copyright 2018 Hewlett Packard Enterprise Development LP
+Copyright (c) 2021, ARM Ltd. All rights reserved.
+Copyright (c) 2021, Semihalf All rights reserved.
+SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef __SECURE_BOOT_VARIABLE_PROVISION_LIB_H__ +#define __SECURE_BOOT_VARIABLE_PROVISION_LIB_H__ + +/** + Sets the content of the 'db' variable based on 'dbDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2(), GetTime() and SetVariable() +--*/ +EFI_STATUS +EFIAPI +EnrollDbFromDefault ( + VOID +); + +/** + Sets the content of the 'dbx' variable based on 'dbxDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2(), GetTime() and SetVariable() +--*/ +EFI_STATUS +EFIAPI +EnrollDbxFromDefault ( + VOID +); + +/** + Sets the content of the 'dbt' variable based on 'dbtDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2(), GetTime() and SetVariable() +--*/ +EFI_STATUS +EFIAPI +EnrollDbtFromDefault ( + VOID +); + +/** + Sets the content of the 'KEK' variable based on 'KEKDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2(), GetTime() and SetVariable() +--*/ +EFI_STATUS +EFIAPI +EnrollKEKFromDefault ( + VOID +); + +/** + Sets the content of the 'PK' variable based on 'PKDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2(), GetTime() and SetVariable() +--*/ +EFI_STATUS +EFIAPI +EnrollPKFromDefault ( + VOID +); + +/** + Initializes PKDefault variable with data from FFS section. + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitPKDefault ( + IN VOID + ); + +/** + Initializes KEKDefault variable with data from FFS section. + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitKEKDefault ( + IN VOID + ); + +/** + Initializes dbDefault variable with data from FFS section. + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitDbDefault ( + IN VOID + ); + +/** + Initializes dbtDefault variable with data from FFS section. + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitDbtDefault ( + IN VOID + ); + +/** + Initializes dbxDefault variable with data from FFS section. + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitDbxDefault ( + IN VOID + ); +#endif diff --git a/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.c b/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.c new file mode 100644 index 0000000000..0dfb197814 --- /dev/null +++ b/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.c @@ -0,0 +1,491 @@ +/** @file + This library provides functions to set/clear Secure Boot + keys and databases. + +Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.
+(C) Copyright 2018 Hewlett Packard Enterprise Development LP
+Copyright (c) 2021, ARM Ltd. All rights reserved.
+Copyright (c) 2021, Semihalf All rights reserved.
+SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ +#include +#include +#include +//#include +#include +#include +#include +#include +#include +#include +#include +#include +//#include "Library/DxeServicesLib.h" + +/** + Enroll a key/certificate based on a default variable. + + @param[in] VariableName The name of the key/database. + @param[in] DefaultName The name of the default variable. + @param[in] VendorGuid The namespace (ie. vendor GUID) of the variable + + + @retval EFI_OUT_OF_RESOURCES Out of memory while allocating AuthHeader. + @retval EFI_SUCCESS Successful enrollment. + @return Error codes from GetTime () and SetVariable (). +--*/ +STATIC +EFI_STATUS +EnrollFromDefault ( + IN CHAR16 *VariableName, + IN CHAR16 *DefaultName, + IN EFI_GUID *VendorGuid + ) +{ + VOID *Data; + UINTN DataSize; + EFI_STATUS Status; + + Status = EFI_SUCCESS; + + DataSize = 0; + Status = GetVariable2 (DefaultName, &gEfiGlobalVariableGuid, &Data, &DataSize); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "error: GetVariable (\"%s): %r\n", DefaultName, Status)); + return Status; + } + + CreateTimeBasedPayload (&DataSize, (UINT8 **)&Data); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "Fail to create time-based data payload: %r", Status)); + return Status; + } + + // + // Allocate memory for auth variable + // + Status = gRT->SetVariable ( + VariableName, + VendorGuid, + (EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS | + EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS), + DataSize, + Data + ); + + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "error: %a (\"%s\", %g): %r\n", __FUNCTION__, VariableName, + VendorGuid, Status)); + } + + if (Data != NULL) { + FreePool (Data); + } + + return Status; +} + +/** Initializes PKDefault variable with data from FFS section. + + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitPKDefault ( + IN VOID + ) +{ + EFI_SIGNATURE_LIST *EfiSig; + UINTN SigListsSize; + EFI_STATUS Status; + UINT8 *Data; + UINTN DataSize; + + // + // Check if variable exists, if so do not change it + // + Status = GetVariable2 (EFI_PK_DEFAULT_VARIABLE_NAME, &gEfiGlobalVariableGuid, (VOID **) &Data, &DataSize); + if (Status == EFI_SUCCESS) { + DEBUG ((DEBUG_INFO, "Variable %s exists. Old value is preserved\n", EFI_PK_DEFAULT_VARIABLE_NAME)); + FreePool (Data); + return EFI_UNSUPPORTED; + } + + if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) { + return Status; + } + + // + // Variable does not exist, can be initialized + // + DEBUG ((DEBUG_INFO, "Variable %s does not exist.\n", EFI_PK_DEFAULT_VARIABLE_NAME)); + + Status = SecureBootFetchData (&gDefaultPKFileGuid, &SigListsSize, &EfiSig); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Content for %s not found\n", EFI_PK_DEFAULT_VARIABLE_NAME)); + return Status; + } + + Status = gRT->SetVariable ( + EFI_PK_DEFAULT_VARIABLE_NAME, + &gEfiGlobalVariableGuid, + EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS, + SigListsSize, + (VOID *)EfiSig + ); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Failed to set %s\n", EFI_PK_DEFAULT_VARIABLE_NAME)); + } + + FreePool (EfiSig); + + return Status; +} + +/** Initializes KEKDefault variable with data from FFS section. + + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitKEKDefault ( + IN VOID + ) +{ + EFI_SIGNATURE_LIST *EfiSig; + UINTN SigListsSize; + EFI_STATUS Status; + UINT8 *Data; + UINTN DataSize; + + // + // Check if variable exists, if so do not change it + // + Status = GetVariable2 (EFI_KEK_DEFAULT_VARIABLE_NAME, &gEfiGlobalVariableGuid, (VOID **) &Data, &DataSize); + if (Status == EFI_SUCCESS) { + DEBUG ((DEBUG_INFO, "Variable %s exists. Old value is preserved\n", EFI_KEK_DEFAULT_VARIABLE_NAME)); + FreePool (Data); + return EFI_UNSUPPORTED; + } + + if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) { + return Status; + } + + // + // Variable does not exist, can be initialized + // + DEBUG ((DEBUG_INFO, "Variable %s does not exist.\n", EFI_KEK_DEFAULT_VARIABLE_NAME)); + + Status = SecureBootFetchData (&gDefaultKEKFileGuid, &SigListsSize, &EfiSig); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Content for %s not found\n", EFI_KEK_DEFAULT_VARIABLE_NAME)); + return Status; + } + + + Status = gRT->SetVariable ( + EFI_KEK_DEFAULT_VARIABLE_NAME, + &gEfiGlobalVariableGuid, + EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS, + SigListsSize, + (VOID *)EfiSig + ); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Failed to set %s\n", EFI_KEK_DEFAULT_VARIABLE_NAME)); + } + + FreePool (EfiSig); + + return Status; +} + +/** Initializes dbDefault variable with data from FFS section. + + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitDbDefault ( + IN VOID + ) +{ + EFI_SIGNATURE_LIST *EfiSig; + UINTN SigListsSize; + EFI_STATUS Status; + UINT8 *Data; + UINTN DataSize; + + Status = GetVariable2 (EFI_DB_DEFAULT_VARIABLE_NAME, &gEfiGlobalVariableGuid, (VOID **) &Data, &DataSize); + if (Status == EFI_SUCCESS) { + DEBUG ((DEBUG_INFO, "Variable %s exists. Old value is preserved\n", EFI_DB_DEFAULT_VARIABLE_NAME)); + FreePool (Data); + return EFI_UNSUPPORTED; + } + + if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) { + return Status; + } + + DEBUG ((DEBUG_INFO, "Variable %s does not exist.\n", EFI_DB_DEFAULT_VARIABLE_NAME)); + + Status = SecureBootFetchData (&gDefaultdbFileGuid, &SigListsSize, &EfiSig); + if (EFI_ERROR (Status)) { + return Status; + } + + Status = gRT->SetVariable ( + EFI_DB_DEFAULT_VARIABLE_NAME, + &gEfiGlobalVariableGuid, + EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS, + SigListsSize, + (VOID *)EfiSig + ); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Failed to set %s\n", EFI_DB_DEFAULT_VARIABLE_NAME)); + } + + FreePool (EfiSig); + + return Status; +} + +/** Initializes dbxDefault variable with data from FFS section. + + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitDbxDefault ( + IN VOID + ) +{ + EFI_SIGNATURE_LIST *EfiSig; + UINTN SigListsSize; + EFI_STATUS Status; + UINT8 *Data; + UINTN DataSize; + + // + // Check if variable exists, if so do not change it + // + Status = GetVariable2 (EFI_DBX_DEFAULT_VARIABLE_NAME, &gEfiGlobalVariableGuid, (VOID **) &Data, &DataSize); + if (Status == EFI_SUCCESS) { + DEBUG ((DEBUG_INFO, "Variable %s exists. Old value is preserved\n", EFI_DBX_DEFAULT_VARIABLE_NAME)); + FreePool (Data); + return EFI_UNSUPPORTED; + } + + if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) { + return Status; + } + + // + // Variable does not exist, can be initialized + // + DEBUG ((DEBUG_INFO, "Variable %s does not exist.\n", EFI_DBX_DEFAULT_VARIABLE_NAME)); + + Status = SecureBootFetchData (&gDefaultdbxFileGuid, &SigListsSize, &EfiSig); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Content for %s not found\n", EFI_DBX_DEFAULT_VARIABLE_NAME)); + return Status; + } + + Status = gRT->SetVariable ( + EFI_DBX_DEFAULT_VARIABLE_NAME, + &gEfiGlobalVariableGuid, + EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS, + SigListsSize, + (VOID *)EfiSig + ); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Failed to set %s\n", EFI_DBX_DEFAULT_VARIABLE_NAME)); + } + + FreePool (EfiSig); + + return Status; +} + +/** Initializes dbtDefault variable with data from FFS section. + + + @retval EFI_SUCCESS Variable was initialized successfully. + @retval EFI_UNSUPPORTED Variable already exists. +--*/ +EFI_STATUS +SecureBootInitDbtDefault ( + IN VOID + ) +{ + EFI_SIGNATURE_LIST *EfiSig; + UINTN SigListsSize; + EFI_STATUS Status; + UINT8 *Data; + UINTN DataSize; + + // + // Check if variable exists, if so do not change it + // + Status = GetVariable2 (EFI_DBT_DEFAULT_VARIABLE_NAME, &gEfiGlobalVariableGuid, (VOID **) &Data, &DataSize); + if (Status == EFI_SUCCESS) { + DEBUG ((DEBUG_INFO, "Variable %s exists. Old value is preserved\n", EFI_DBT_DEFAULT_VARIABLE_NAME)); + FreePool (Data); + return EFI_UNSUPPORTED; + } + + if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) { + return Status; + } + + // + // Variable does not exist, can be initialized + // + DEBUG ((DEBUG_INFO, "Variable %s does not exist.\n", EFI_DBT_DEFAULT_VARIABLE_NAME)); + + Status = SecureBootFetchData (&gDefaultdbtFileGuid, &SigListsSize, &EfiSig); + if (EFI_ERROR (Status)) { + return Status; + } + + Status = gRT->SetVariable ( + EFI_DBT_DEFAULT_VARIABLE_NAME, + &gEfiGlobalVariableGuid, + EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS, + SigListsSize, + (VOID *)EfiSig + ); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "Failed to set %s\n", EFI_DBT_DEFAULT_VARIABLE_NAME)); + } + + FreePool (EfiSig); + + return EFI_SUCCESS; +} + +/** + Sets the content of the 'db' variable based on 'dbDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2 (), GetTime () and SetVariable () +--*/ +EFI_STATUS +EFIAPI +EnrollDbFromDefault ( + VOID +) +{ + EFI_STATUS Status; + + Status = EnrollFromDefault ( + EFI_IMAGE_SECURITY_DATABASE, + EFI_DB_DEFAULT_VARIABLE_NAME, + &gEfiImageSecurityDatabaseGuid + ); + + return Status; +} + +/** + Sets the content of the 'dbx' variable based on 'dbxDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2 (), GetTime () and SetVariable () +--*/ +EFI_STATUS +EFIAPI +EnrollDbxFromDefault ( + VOID +) +{ + EFI_STATUS Status; + + Status = EnrollFromDefault ( + EFI_IMAGE_SECURITY_DATABASE1, + EFI_DBX_DEFAULT_VARIABLE_NAME, + &gEfiImageSecurityDatabaseGuid + ); + + return Status; +} + +/** + Sets the content of the 'dbt' variable based on 'dbtDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2 (), GetTime () and SetVariable () +--*/ +EFI_STATUS +EFIAPI +EnrollDbtFromDefault ( + VOID +) +{ + EFI_STATUS Status; + + Status = EnrollFromDefault ( + EFI_IMAGE_SECURITY_DATABASE2, + EFI_DBT_DEFAULT_VARIABLE_NAME, + &gEfiImageSecurityDatabaseGuid); + + return Status; +} + +/** + Sets the content of the 'KEK' variable based on 'KEKDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2 (), GetTime () and SetVariable () +--*/ +EFI_STATUS +EFIAPI +EnrollKEKFromDefault ( + VOID +) +{ + EFI_STATUS Status; + + Status = EnrollFromDefault ( + EFI_KEY_EXCHANGE_KEY_NAME, + EFI_KEK_DEFAULT_VARIABLE_NAME, + &gEfiGlobalVariableGuid + ); + + return Status; +} + +/** + Sets the content of the 'KEK' variable based on 'KEKDefault' variable content. + + @retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails + while VendorGuid is NULL. + @retval other Errors from GetVariable2 (), GetTime () and SetVariable () +--*/ +EFI_STATUS +EFIAPI +EnrollPKFromDefault ( + VOID +) +{ + EFI_STATUS Status; + + Status = EnrollFromDefault ( + EFI_PLATFORM_KEY_NAME, + EFI_PK_DEFAULT_VARIABLE_NAME, + &gEfiGlobalVariableGuid + ); + + return Status; +} diff --git a/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.uni b/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.uni new file mode 100644 index 0000000000..68d928ef30 --- /dev/null +++ b/SecurityPkg/Library/SecureBootVariableProvisionLib/SecureBootVariableProvisionLib.uni @@ -0,0 +1,16 @@ +// /** @file +// +// Provides initialization of Secure Boot keys and databases. +// +// Copyright (c) 2021, ARM Ltd. All rights reserved.
+// Copyright (c) 2021, Semihalf All rights reserved.
+// +// SPDX-License-Identifier: BSD-2-Clause-Patent +// +// **/ + + +#string STR_MODULE_ABSTRACT #language en-US "Provides functions to initialize PK, KEK and databases based on default variables." + +#string STR_MODULE_DESCRIPTION #language en-US "Provides functions to initialize PK, KEK and databases based on default variables." + -- 2.25.1