-----邮件原件-----
发件人: kenlautner3@... <kenlautner3@...>
发送时间: 2021年6月17日 6:45
收件人: devel@edk2.groups.io
抄送: Jian J Wang <jian.j.wang@...>; Hao A Wu
<hao.a.wu@...>; Zhichao Gao <zhichao.gao@...>; Ray Ni
<ray.ni@...>; Liming Gao <gaoliming@...>
主题: [PATCH v2 1/1] MdeModulePkg/BdsDxe: Update BdsEntry to use
Variable Policy

From: Ken Lautner <klautner@...>

Changed BdsEntry.c to use Variable Policy instead of Variable Lock
as Variable Lock will be Deprecated eventually

Cc: Jian J Wang <jian.j.wang@...>
Cc: Hao A Wu <hao.a.wu@...>
Cc: Zhichao Gao <zhichao.gao@...>
Cc: Ray Ni <ray.ni@...>
Cc: Liming Gao <gaoliming@...>
Signed-off-by: Kenneth Lautner <kenlautner3@...>

Reviewed-by Liming Gao <gaoliming@...>
---
MdeModulePkg/Universal/BdsDxe/BdsDxe.inf | 4 +++-
MdeModulePkg/Universal/BdsDxe/BdsEntry.c | 20 +++++++++++++++-----
2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
b/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
index 9310b4dccb18..76ff6a0f5fc3 100644
--- a/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
+++ b/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
@@ -50,6 +50,8 @@
BaseMemoryLib

DebugLib

UefiBootManagerLib

+ VariablePolicyLib

+ VariablePolicyHelperLib

PlatformBootManagerLib

PcdLib

PrintLib

@@ -77,7 +79,7 @@
[Protocols]

gEfiBdsArchProtocolGuid ## PRODUCES

gEfiSimpleTextInputExProtocolGuid ## CONSUMES

- gEdkiiVariableLockProtocolGuid ##
SOMETIMES_CONSUMES

+ gEdkiiVariablePolicyProtocolGuid ##
SOMETIMES_CONSUMES

gEfiDeferredImageLoadProtocolGuid ## CONSUMES



[FeaturePcd]

diff --git a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
index 83b773a2fa5f..13c10bdc5bf8 100644
--- a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
+++ b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
@@ -15,6 +15,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include "Bds.h"

#include "Language.h"

#include "HwErrRecSupport.h"

+#include <Library/VariablePolicyHelperLib.h>



#define SET_BOOT_OPTION_SUPPORT_KEY_COUNT(a, c) { \

(a) = ((a) & ~EFI_BOOT_OPTION_SUPPORT_COUNT) | (((c) <<
LowBitSet32 (EFI_BOOT_OPTION_SUPPORT_COUNT)) &
EFI_BOOT_OPTION_SUPPORT_COUNT); \

@@ -670,7 +671,7 @@ BdsEntry (
EFI_STATUS Status;

UINT32 BootOptionSupport;

UINT16 BootTimeOut;

- EDKII_VARIABLE_LOCK_PROTOCOL *VariableLock;

+ EDKII_VARIABLE_POLICY_PROTOCOL *VariablePolicy;

UINTN Index;

EFI_BOOT_MANAGER_LOAD_OPTION LoadOption;

UINT16 *BootNext;

@@ -716,12 +717,21 @@ BdsEntry (
//

// Mark the read-only variables if the Variable Lock protocol exists

//

- Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL,
(VOID **) &VariableLock);

- DEBUG ((EFI_D_INFO, "[BdsDxe] Locate Variable Lock protocol - %r\n",
Status));

+ Status = gBS->LocateProtocol(&gEdkiiVariablePolicyProtocolGuid, NULL,
(VOID**)&VariablePolicy);

+ DEBUG((DEBUG_INFO, "[BdsDxe] Locate Variable Policy protocol - %r\n",
Status));

if (!EFI_ERROR (Status)) {

for (Index = 0; Index < ARRAY_SIZE (mReadOnlyVariables); Index++) {

- Status = VariableLock->RequestToLock (VariableLock,
mReadOnlyVariables[Index], &gEfiGlobalVariableGuid);

- ASSERT_EFI_ERROR (Status);

+ Status = RegisterBasicVariablePolicy(

+ VariablePolicy,

+ &gEfiGlobalVariableGuid,

+ mReadOnlyVariables[Index],

+ VARIABLE_POLICY_NO_MIN_SIZE,

+ VARIABLE_POLICY_NO_MAX_SIZE,

+ VARIABLE_POLICY_NO_MUST_ATTR,

+ VARIABLE_POLICY_NO_CANT_ATTR,

+ VARIABLE_POLICY_TYPE_LOCK_NOW

+ );

+ ASSERT_EFI_ERROR(Status);

}

}



--
2.31.1.windows.1