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MdeModulePkg/CapsuleRuntimeDxe: Introduce PCD to control this feature. 

https://github.com/tianocore/tianocore.github.io/wiki/UEFI-Capsule-
on-Disk-Introducation

Introduce PcdCapsuleInRamSupport to turn on/off Capsule In Ram feature.
Platform could choose to drop CapsulePei/CapsuleX64 and not to support
Capsule In Ram.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Chao B Zhang <chao.b.zhang@intel.com>
Signed-off-by: Wei6 Xu <wei6.xu@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Chao B Zhang <chao.b.zhang@intel.com>
This commit is contained in:
Wei6 Xu 2019-06-20 00:27:09 +08:00 committed by Zhang, Chao B
parent fd72860895
commit 7837d12498
2 changed files with 12 additions and 1 deletions
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1
MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
View File

@ -90,6 +90,7 @@
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxSizeNonPopulateCapsule ## SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxSizePopulateCapsule ## SOMETIMES_CONSUMES # Populate Image requires reset support.
gEfiMdeModulePkgTokenSpaceGuid.PcdCapsuleInRamSupport ## CONSUMES
[Pcd.X64]
gEfiMdeModulePkgTokenSpaceGuid.PcdCapsulePeiLongModeStackSize ## SOMETIMES_CONSUMES

12
MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleService.c
View File

@ -4,7 +4,7 @@
It installs the Capsule Architectural Protocol defined in PI1.0a to signify
the capsule runtime services are ready.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -71,6 +71,14 @@ UpdateCapsule (
CHAR16 CapsuleVarName[30];
CHAR16 *TempVarName;
//
// Check if platform support Capsule In RAM or not.
// Platform could choose to drop CapsulePei/CapsuleX64 and do not support Capsule In RAM.
//
if (!PcdGetBool(PcdCapsuleInRamSupport)) {
return EFI_UNSUPPORTED;
}
//
// Capsule Count can't be less than one.
//
@ -218,6 +226,8 @@ UpdateCapsule (
/**
Returns if the capsule can be supported via UpdateCapsule().
Notice: When PcdCapsuleInRamSupport is unsupported, even this routine returns a valid answer,
the capsule still is unsupported via UpdateCapsule().
@param CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules
being passed into update capsule.