REF: 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.w...@intel.com>
Cc: Hao A Wu <hao.a...@intel.com>
Cc: Chao B Zhang <chao.b.zh...@intel.com>
Signed-off-by: Wei6 Xu <wei6...@intel.com>
---
.../Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf | 1 +
MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleService.c | 12 +++++++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
b/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
index 338577e293..9da450722b 100644
--- a/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
+++ b/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
@@ -88,10 +88,11 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode ## CONSUMES
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxSizeNonPopulateCapsule ##
SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxSizePopulateCapsule ##
SOMETIMES_CONSUMES # Populate Image requires reset support.
+ gEfiMdeModulePkgTokenSpaceGuid.PcdCapsuleInRamSupport ## CONSUMES
[Pcd.X64]
gEfiMdeModulePkgTokenSpaceGuid.PcdCapsulePeiLongModeStackSize ##
SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable ##
SOMETIMES_CONSUMES
diff --git a/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleService.c
b/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleService.c
index aaf819c4c6..77b8f00062 100644
--- a/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleService.c
+++ b/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleService.c
@@ -2,11 +2,11 @@
Capsule Runtime Driver produces two UEFI capsule runtime services.
(UpdateCapsule, QueryCapsuleCapabilities)
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
**/
#include "CapsuleService.h"
@@ -69,10 +69,18 @@ UpdateCapsule (
BOOLEAN NeedReset;
BOOLEAN InitiateReset;
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.
//
if (CapsuleCount < 1) {
return EFI_INVALID_PARAMETER;
@@ -216,10 +224,12 @@ UpdateCapsule (
return Status;
}
/**
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.
@param CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in
CaspuleHeaderArray.
--
2.16.2.windows.1
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