Re: [PATCH v2 3/6] SecurityPkg: Add SecureBootDefaultKeysDxe driver

["Min Xu" <min.m.xu@intel.com>]

On June 1, 2021 9:12 PM, Grzegorz Bernacki Wrote:
> This driver initializes default Secure Boot keys and databases based on keys
> embedded in flash.
> 
> Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
> ---
> 
> SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBootD
> efaultKeysDxe.inf | 46 +++++++++++++
> 
> SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBootD
> efaultKeysDxe.c   | 69 ++++++++++++++++++++
> 
> SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBootD
> efaultKeysDxe.uni | 17 +++++
>  3 files changed, 132 insertions(+)
>  create mode 100644
> SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBootD
> efaultKeysDxe.inf
>  create mode 100644
> SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBootD
> efaultKeysDxe.c
>  create mode 100644
> SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBootD
> efaultKeysDxe.uni
> 
> diff --git
> a/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBoo
> tDefaultKeysDxe.inf
> b/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBoo
> tDefaultKeysDxe.inf
> new file mode 100644
> index 0000000000..27345eab2e
> --- /dev/null
> +++
> b/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureB
> +++ ootDefaultKeysDxe.inf
> @@ -0,0 +1,46 @@
> +## @file
> +#  Initializes Secure Boot default keys # #  Copyright (c) 2021, ARM
> +Ltd. All rights reserved.<BR> #  Copyright (c) 2021, Semihalf All
> +rights reserved.<BR> #  SPDX-License-Identifier: BSD-2-Clause-Patent #
> +## [Defines]
> +  INF_VERSION = 0x00010005
> +  BASE_NAME   = SecureBootDefaultKeysDxe
> +  FILE_GUID   = C937FCB7-25AC-4376-89A2-4EA8B317DE83
> +  MODULE_TYPE = DXE_DRIVER
> +  ENTRY_POINT = SecureBootDefaultKeysEntryPoint
> +
> +#
> +#  VALID_ARCHITECTURES           = IA32 X64 AARCH64
> +#
> +[Sources]
> +  SecureBootDefaultKeysDxe.c
> +
> +[Packages]
> +  MdePkg/MdePkg.dec
> +  MdeModulePkg/MdeModulePkg.dec
> +  SecurityPkg/SecurityPkg.dec
> +
> +[LibraryClasses]
> +  BaseLib
> +  BaseMemoryLib
> +  MemoryAllocationLib
> +  UefiDriverEntryPoint
> +  DebugLib
> +  SecureBootVariableLib
> +
> +[Guids]
> +  ## SOMETIMES_PRODUCES      ## Variable:L"PKDefault"
> +  ## SOMETIMES_PRODUCES      ## Variable:L"KEKDefault"
> +  ## SOMETIMES_PRODUCES      ## Variable:L"dbDefault"
> +  ## SOMETIMES_PRODUCES      ## Variable:L"dbtDefault"
> +  ## SOMETIMES_PRODUCES      ## Variable:L"dbxDefault"
> +  gEfiGlobalVariableGuid
> +
> +[Depex]
> +  gEfiVariableArchProtocolGuid      AND
> +  gEfiVariableWriteArchProtocolGuid
> +
> diff --git
> a/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBoo
> tDefaultKeysDxe.c
> b/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBoo
> tDefaultKeysDxe.c
> new file mode 100644
> index 0000000000..0928489e15
> --- /dev/null
> +++
> b/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureB
> +++ ootDefaultKeysDxe.c
> @@ -0,0 +1,69 @@
> +/** @file
> +  This driver init default Secure Boot variables
> +
> +Copyright (c) 2021, ARM Ltd. All rights reserved.<BR> Copyright (c)
> +2021, Semihalf All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +#include <Guid/AuthenticatedVariableFormat.h>
> +#include <Guid/ImageAuthentication.h>
> +#include <Library/BaseLib.h>
> +#include <Library/BaseMemoryLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/MemoryAllocationLib.h> #include
> +<Library/UefiBootServicesTableLib.h>
> +#include <Library/UefiRuntimeServicesTableLib.h>
> +#include <Library/SecureBootVariableLib.h>
> +
> +/**
> +  The entry point for SecureBootDefaultKeys driver.
> +
> +  @param[in]  ImageHandle        The image handle of the driver.
> +  @param[in]  SystemTable        The system table.
> +
> +  @retval EFI_ALREADY_STARTED    The driver already exists in system.
> +  @retval EFI_OUT_OF_RESOURCES   Fail to execute entry point due to lack
> of resources.
> +  @retval EFI_SUCCESS            All the related protocols are installed on the
> driver.
> +  @retval Others                 Fail to get the SecureBootEnable variable.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +SecureBootDefaultKeysEntryPoint (
> +  IN EFI_HANDLE          ImageHandle,
> +  IN EFI_SYSTEM_TABLE    *SystemTable
> +  )
> +{
> +  EFI_STATUS  Status;
> +
> +  Status = SecureBootInitPKDefault ();
> +  if (EFI_ERROR (Status)) {
> +    DEBUG((DEBUG_ERROR, "%a: Cannot initialize PKDefault: %r\n",
> __FUNCTION__, Status));
> +    return Status;
> +  }
> +
> +  Status = SecureBootInitKEKDefault ();  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_ERROR, "%a: Cannot initialize KEKDefault: %r\n",
> __FUNCTION__, Status));
> +    return Status;
> +  }
> +  Status = SecureBootInitdbDefault ();
> +  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_ERROR, "%a: Cannot initialize dbDefault: %r\n",
> __FUNCTION__, Status));
> +    return Status;
> +  }
> +
> +  Status = SecureBootInitdbtDefault ();  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_INFO, "%a: dbtDefault not initialized\n",
> + __FUNCTION__));  }
> +
> +  Status = SecureBootInitdbxDefault ();  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_INFO, "%a: dbxDefault not initialized\n",
> + __FUNCTION__));  }
> +
> +  return Status;
> +}
> +
> diff --git
> a/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBoo
> tDefaultKeysDxe.uni
> b/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureBoo
> tDefaultKeysDxe.uni
> new file mode 100644
> index 0000000000..30f03aee5d
> --- /dev/null
> +++
> b/SecurityPkg/VariableAuthenticated/SecureBootDefaultKeysDxe/SecureB
> +++ ootDefaultKeysDxe.uni
> @@ -0,0 +1,17 @@
> +// /** @file
> +// Provides the capability to intialize Secure Boot default variables
> +// // Module which initializes Secure boot default variables.
> +//
> +// Copyright (c) 2021, ARM Ltd. All rights reserved.<BR> // Copyright
> +(c) 2021, Semihalf All rights reserved.<BR> // //
> +SPDX-License-Identifier: BSD-2-Clause-Patent // // **/
> +
> +
> +#string STR_MODULE_ABSTRACT             #language en-US "Module which
> initializes Secure boot default variables"
> +
> +#string STR_MODULE_DESCRIPTION          #language en-US "This module
> reads embedded keys and initializes Secure Boot default variables."
> +
> --
> 2.25.1

It looks good to me.