DxeCapsuleLibNull.c File Reference

#include <Uefi.h>
#include <Library/CapsuleLib.h>

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	SupportCapsuleImage (IN EFI_CAPSULE_HEADER *CapsuleHeader)
EFI_STATUS EFIAPI	ProcessCapsuleImage (IN EFI_CAPSULE_HEADER *CapsuleHeader)
EFI_STATUS EFIAPI	ProcessCapsules (VOID)
BOOLEAN EFIAPI	CoDCheckCapsuleOnDiskFlag (VOID)
EFI_STATUS EFIAPI	CoDClearCapsuleOnDiskFlag (VOID)
EFI_STATUS EFIAPI	CoDRelocateCapsule (UINTN MaxRetry)
EFI_STATUS EFIAPI	CoDRemoveTempFile (UINTN MaxRetry)

Detailed Description

Null Dxe Capsule Library instance does nothing and returns unsupport status.

Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file DxeCapsuleLibNull.c.

Function Documentation

CoDCheckCapsuleOnDiskFlag()

BOOLEAN EFIAPI CoDCheckCapsuleOnDiskFlag

(

VOID

)

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

Return values

TRUE	Flag is enabled
FALSE	Flag is not enabled

Definition at line 98 of file DxeCapsuleLibNull.c.

CoDClearCapsuleOnDiskFlag()

EFI_STATUS EFIAPI CoDClearCapsuleOnDiskFlag

(

VOID

)

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

Return values

EFI_SUCCESS

All Capsule On Disk flags are cleared

Definition at line 113 of file DxeCapsuleLibNull.c.

CoDRelocateCapsule()

EFI_STATUS EFIAPI CoDRelocateCapsule

(

UINTN

MaxRetry

)

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.

Parameters

[in]

MaxRetry

Max Connection Retry. Stall 100ms between each connection try to ensure devices like USB can get enumerated. Input 0 means no retry.

Return values

EFI_SUCCESS

Capsule on Disk images are successfully relocated.

Definition at line 144 of file DxeCapsuleLibNull.c.

CoDRemoveTempFile()

EFI_STATUS EFIAPI CoDRemoveTempFile

(

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.

Parameters

[in]

MaxRetry

Max Connection Retry. Stall 100ms between each connection try to ensure devices like USB can get enumerated. Input 0 means no retry.

Return values

EFI_SUCCESS

Remove the temp file successfully.

Definition at line 164 of file DxeCapsuleLibNull.c.

ProcessCapsuleImage()

EFI_STATUS EFIAPI ProcessCapsuleImage

(

IN EFI_CAPSULE_HEADER *

CapsuleHeader

)

The firmware specific implementation processes the capsule image if it recognized the format of this capsule image.

Caution: This function may receive untrusted input.

Parameters

CapsuleHeader

Point to the UEFI capsule image to be processed.

Return values

EFI_UNSUPPORTED

Capsule image is not supported by the firmware.

Definition at line 42 of file DxeCapsuleLibNull.c.

ProcessCapsules()

EFI_STATUS EFIAPI ProcessCapsules

(

VOID

)

This routine is called to process capsules.

Caution: This function may receive untrusted input.

The capsules reported in EFI_HOB_UEFI_CAPSULE are processed. If there is no EFI_HOB_UEFI_CAPSULE, this routine does nothing.

This routine should be called twice in BDS. 1) The first call must be before EndOfDxe. The system capsules is processed. If device capsule FMP protocols are exposted at this time and device FMP capsule has zero EmbeddedDriverCount, the device capsules are processed. Each individual capsule result is recorded in capsule record variable. System may reset in this function, if reset is required by capsule and all capsules are processed. If not all capsules are processed, reset will be defered to second call.

2) The second call must be after EndOfDxe and after ConnectAll, so that all device capsule FMP protocols are exposed. The system capsules are skipped. If the device capsules are NOT processed in first call, they are processed here. Each individual capsule result is recorded in capsule record variable. System may reset in this function, if reset is required by capsule processed in first call and second call.

Return values

EFI_SUCCESS	There is no error when processing capsules.
EFI_OUT_OF_RESOURCES	No enough resource to process capsules.

Definition at line 81 of file DxeCapsuleLibNull.c.

SupportCapsuleImage()

EFI_STATUS EFIAPI SupportCapsuleImage

(

IN EFI_CAPSULE_HEADER *

CapsuleHeader

)

The firmware checks whether the capsule image is supported by the CapsuleGuid in CapsuleHeader or other specific information in capsule image.

Caution: This function may receive untrusted input.

Parameters

CapsuleHeader

Point to the UEFI capsule image to be checked.

Return values

EFI_UNSUPPORTED

Input capsule is not supported by the firmware.

Definition at line 23 of file DxeCapsuleLibNull.c.