MdeModulePkg: Add Capsule On Disk APIs into CapsuleLib.

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

CoDCheckCapsuleOnDiskFlag() is to check if CapsuleOnDisk flag in
"OsIndications" Variable is enabled. It is used to indicate whether
capsule on disk is provisioned in normal boot path.

CoDClearCapsuleOnDiskFlag() is to to clear CapsuleOnDisk flags,
including "OsIndications" and "BootNext" variable.

CoDRelocateCapsule() is to relocate the capsules from EFI system
partition. Depends on PcdCapsuleInRamSupport, there are two solutions
to relocate the capsule on disk images:
When Capsule In Ram is supported, the Capsule On Disk images are
relocated into memory, and call UpdateCapsule() service to deliver
the capsules.
When Capsule In Ram is not supported, the Capsule On Disk images are
relocated into a temp file which will be stored in root directory on
a platform specific storage device. CapsuleOnDiskLoadPei PEIM will
retrieve the capsules from the relocation temp file and report
capsule hobs for them.

CoDRemoveTempFile() is to remove the relocation temp file in the next
boot after capsules are processed.

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>

1 files changed, 77 insertions, 1 deletions

diff --git a/MdeModulePkg/Include/Library/CapsuleLib.h b/MdeModulePkg/Include/Library/CapsuleLib.h
index 1fc2fba3a2..7a5414c80f 100644
--- a/MdeModulePkg/Include/Library/CapsuleLib.h
+++ b/MdeModulePkg/Include/Library/CapsuleLib.h
@@ -2,7 +2,7 @@
 

   This library class defines a set of interfaces for how to process capsule image updates.

 

-Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>

 SPDX-License-Identifier: BSD-2-Clause-Patent

 

 **/

@@ -10,6 +10,11 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #ifndef __CAPSULE_LIB_H__

 #define __CAPSULE_LIB_H__

 

+//

+// BOOLEAN Variable to indicate whether system is in the capsule on disk state.

+//

+#define COD_RELOCATION_INFO_VAR_NAME   L"CodRelocationInfo"

+

 /**

   The firmware checks whether the capsule image is supported

   by the CapsuleGuid in CapsuleHeader or if there is other specific information in

@@ -81,4 +86,75 @@ ProcessCapsules (
   VOID

   );

 

+/**

+  This routine is called to check if CapsuleOnDisk flag in OsIndications Variable

+  is enabled.

+

+  @retval TRUE     Flag is enabled

+  @retval FALSE    Flag is not enabled

+

+**/

+BOOLEAN

+EFIAPI

+CoDCheckCapsuleOnDiskFlag(

+  VOID

+  );

+

+/**

+  This routine is called to clear CapsuleOnDisk flags including OsIndications and BootNext variable

+

+  @retval EFI_SUCCESS   All Capsule On Disk flags are cleared

+

+**/

+EFI_STATUS

+EFIAPI

+CoDClearCapsuleOnDiskFlag(

+  VOID

+  );

+

+/**

+  Relocate Capsule on Disk from EFI system partition.

+

+  Two solution to deliver Capsule On Disk:

+  Solution A: If PcdCapsuleInRamSupport is enabled, relocate Capsule On Disk to memory and call UpdateCapsule().

+  Solution B: If PcdCapsuleInRamSupport is disabled, relocate Capsule On Disk to a platform-specific NV storage

+  device with BlockIo protocol.

+

+  Device enumeration like USB costs time, user can input MaxRetry to tell function to retry.

+  Function will stall 100ms between each retry.

+

+  Side Effects:

+    Capsule Delivery Supported Flag in OsIndication variable and BootNext variable will be cleared.

+    Solution B: Content corruption. Block IO write directly touches low level write. Orignal partitions, file

+  systems of the relocation device will be corrupted.

+

+  @param[in]    MaxRetry             Max Connection Retry. Stall 100ms between each connection try to ensure

+                                     devices like USB can get enumerated. Input 0 means no retry.

+

+  @retval EFI_SUCCESS   Capsule on Disk images are successfully relocated.

+

+**/

+EFI_STATUS

+EFIAPI

+CoDRelocateCapsule(

+  UINTN     MaxRetry

+  );

+

+/**

+  Remove the temp file from the root of EFI System Partition.

+  Device enumeration like USB costs time, user can input MaxRetry to tell function to retry.

+  Function will stall 100ms between each retry.

+

+  @param[in]    MaxRetry             Max Connection Retry. Stall 100ms between each connection try to ensure

+                                     devices like USB can get enumerated. Input 0 means no retry.

+

+  @retval EFI_SUCCESS   Remove the temp file successfully.

+

+**/

+EFI_STATUS

+EFIAPI

+CoDRemoveTempFile (

+  UINTN    MaxRetry

+  );

+

 #endif