X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdeModulePkg%2FUniversal%2FCapsuleRuntimeDxe%2FCapsuleCache.c;fp=MdeModulePkg%2FUniversal%2FCapsuleRuntimeDxe%2FCapsuleCache.c;h=ab81296a653c599dd6d66b7acc69df2e3959f7ad;hb=a89fd3a359b868e619355dbeda14ac4104b467a6;hp=0000000000000000000000000000000000000000;hpb=b02873340b2de5c2fe8325d22214cd3a5b21c5e5;p=mirror_edk2.git
diff --git a/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleCache.c b/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleCache.c
new file mode 100644
index 0000000000..ab81296a65
--- /dev/null
+++ b/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleCache.c
@@ -0,0 +1,63 @@
+/** @file
+ Flush the cache is required for most architectures while do capsule
+ update. It is not support at Runtime.
+
+ Copyright (c) 2018, Linaro, Ltd. All rights reserved.
+ Copyright (c) 2019, Intel Corporation. All rights reserved.
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "CapsuleService.h"
+
+#include
+
+/**
+ Writes Back a range of data cache lines covering a set of capsules in memory.
+
+ Writes Back the data cache lines specified by ScatterGatherList.
+
+ @param ScatterGatherList Physical address of the data structure that
+ describes a set of capsules in memory
+
+**/
+VOID
+CapsuleCacheWriteBack (
+ IN EFI_PHYSICAL_ADDRESS ScatterGatherList
+ )
+{
+ EFI_CAPSULE_BLOCK_DESCRIPTOR *Desc;
+
+ if (!EfiAtRuntime ()) {
+ Desc = (EFI_CAPSULE_BLOCK_DESCRIPTOR *)(UINTN)ScatterGatherList;
+ do {
+ WriteBackDataCacheRange (
+ (VOID *)(UINTN)Desc,
+ (UINTN)sizeof (*Desc)
+ );
+
+ if (Desc->Length > 0) {
+ WriteBackDataCacheRange (
+ (VOID *)(UINTN)Desc->Union.DataBlock,
+ (UINTN)Desc->Length
+ );
+ Desc++;
+ } else if (Desc->Union.ContinuationPointer > 0) {
+ Desc = (EFI_CAPSULE_BLOCK_DESCRIPTOR *)(UINTN)Desc->Union.ContinuationPointer;
+ }
+ } while (Desc->Length > 0 || Desc->Union.ContinuationPointer > 0);
+
+ WriteBackDataCacheRange (
+ (VOID *)(UINTN)Desc,
+ (UINTN)sizeof (*Desc)
+ );
+ }
+}
+