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https://github.com/CloverHackyColor/CloverBootloader.git
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398 lines
14 KiB
C
398 lines
14 KiB
C
/** @file
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Capsule Runtime Driver produces two UEFI capsule runtime services.
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(UpdateCapsule, QueryCapsuleCapabilities)
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It installs the Capsule Architectural Protocol defined in PI1.0a to signify
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the capsule runtime services are ready.
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Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "CapsuleService.h"
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//
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// Handle for the installation of Capsule Architecture Protocol.
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//
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EFI_HANDLE mNewHandle = NULL;
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//
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// The times of calling UpdateCapsule ()
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//
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UINTN mTimes = 0;
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UINT32 mMaxSizePopulateCapsule = 0;
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UINT32 mMaxSizeNonPopulateCapsule = 0;
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/**
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Passes capsules to the firmware with both virtual and physical mapping. Depending on the intended
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consumption, the firmware may process the capsule immediately. If the payload should persist
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across a system reset, the reset value returned from EFI_QueryCapsuleCapabilities must
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be passed into ResetSystem() and will cause the capsule to be processed by the firmware as
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part of the reset process.
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@param CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules
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being passed into update capsule.
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@param CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in
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CaspuleHeaderArray.
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@param ScatterGatherList Physical pointer to a set of
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EFI_CAPSULE_BLOCK_DESCRIPTOR that describes the
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location in physical memory of a set of capsules.
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@retval EFI_SUCCESS Valid capsule was passed. If
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CAPSULE_FLAGS_PERSIT_ACROSS_RESET is not set, the
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capsule has been successfully processed by the firmware.
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@retval EFI_DEVICE_ERROR The capsule update was started, but failed due to a device error.
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@retval EFI_INVALID_PARAMETER CapsuleSize is NULL, or an incompatible set of flags were
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set in the capsule header.
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@retval EFI_INVALID_PARAMETER CapsuleCount is Zero.
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@retval EFI_INVALID_PARAMETER For across reset capsule image, ScatterGatherList is NULL.
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@retval EFI_UNSUPPORTED CapsuleImage is not recognized by the firmware.
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@retval EFI_OUT_OF_RESOURCES When ExitBootServices() has been previously called this error indicates the capsule
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is compatible with this platform but is not capable of being submitted or processed
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in runtime. The caller may resubmit the capsule prior to ExitBootServices().
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@retval EFI_OUT_OF_RESOURCES When ExitBootServices() has not been previously called then this error indicates
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the capsule is compatible with this platform but there are insufficient resources to process.
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**/
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EFI_STATUS
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EFIAPI
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UpdateCapsule (
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IN EFI_CAPSULE_HEADER **CapsuleHeaderArray,
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IN UINTN CapsuleCount,
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IN EFI_PHYSICAL_ADDRESS ScatterGatherList OPTIONAL
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)
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{
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UINTN ArrayNumber;
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EFI_STATUS Status;
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EFI_CAPSULE_HEADER *CapsuleHeader;
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BOOLEAN NeedReset;
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BOOLEAN InitiateReset;
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CHAR16 CapsuleVarName[30];
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CHAR16 *TempVarName;
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//
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// Check if platform support Capsule In RAM or not.
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// Platform could choose to drop CapsulePei/CapsuleX64 and do not support Capsule In RAM.
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//
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if (!PcdGetBool(PcdCapsuleInRamSupport)) {
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return EFI_UNSUPPORTED;
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}
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//
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// Capsule Count can't be less than one.
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//
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if (CapsuleCount < 1) {
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return EFI_INVALID_PARAMETER;
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}
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NeedReset = FALSE;
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InitiateReset = FALSE;
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CapsuleHeader = NULL;
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CapsuleVarName[0] = 0;
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for (ArrayNumber = 0; ArrayNumber < CapsuleCount; ArrayNumber++) {
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//
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// A capsule which has the CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE flag must have
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// CAPSULE_FLAGS_PERSIST_ACROSS_RESET set in its header as well.
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//
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CapsuleHeader = CapsuleHeaderArray[ArrayNumber];
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if ((CapsuleHeader->Flags & (CAPSULE_FLAGS_PERSIST_ACROSS_RESET | CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE)) == CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// A capsule which has the CAPSULE_FLAGS_INITIATE_RESET flag must have
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// CAPSULE_FLAGS_PERSIST_ACROSS_RESET set in its header as well.
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//
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if ((CapsuleHeader->Flags & (CAPSULE_FLAGS_PERSIST_ACROSS_RESET | CAPSULE_FLAGS_INITIATE_RESET)) == CAPSULE_FLAGS_INITIATE_RESET) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Check FMP capsule flag
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//
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if (CompareGuid(&CapsuleHeader->CapsuleGuid, &gEfiFmpCapsuleGuid)
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&& (CapsuleHeader->Flags & CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) != 0 ) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Check Capsule image without populate flag by firmware support capsule function
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//
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if ((CapsuleHeader->Flags & CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) == 0) {
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Status = SupportCapsuleImage (CapsuleHeader);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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}
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}
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//
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// Walk through all capsules, record whether there is a capsule needs reset
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// or initiate reset. And then process capsules which has no reset flag directly.
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//
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for (ArrayNumber = 0; ArrayNumber < CapsuleCount ; ArrayNumber++) {
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CapsuleHeader = CapsuleHeaderArray[ArrayNumber];
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//
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// Here should be in the boot-time for non-reset capsule image
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// Platform specific update for the non-reset capsule image.
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//
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if ((CapsuleHeader->Flags & CAPSULE_FLAGS_PERSIST_ACROSS_RESET) == 0) {
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if (EfiAtRuntime ()) {
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Status = EFI_OUT_OF_RESOURCES;
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} else {
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Status = ProcessCapsuleImage(CapsuleHeader);
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}
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if (EFI_ERROR(Status)) {
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return Status;
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}
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} else {
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NeedReset = TRUE;
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if ((CapsuleHeader->Flags & CAPSULE_FLAGS_INITIATE_RESET) != 0) {
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InitiateReset = TRUE;
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}
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}
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}
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//
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// After launching all capsules who has no reset flag, if no more capsules claims
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// for a system reset just return.
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//
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if (!NeedReset) {
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return EFI_SUCCESS;
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}
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//
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// ScatterGatherList is only referenced if the capsules are defined to persist across
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// system reset.
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//
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if (ScatterGatherList == (EFI_PHYSICAL_ADDRESS) (UINTN) NULL) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Check if the platform supports update capsule across a system reset
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//
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if (!IsPersistAcrossResetCapsuleSupported ()) {
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return EFI_UNSUPPORTED;
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}
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CapsuleCacheWriteBack (ScatterGatherList);
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//
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// Construct variable name CapsuleUpdateData, CapsuleUpdateData1, CapsuleUpdateData2...
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// if user calls UpdateCapsule multiple times.
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//
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StrCpyS (CapsuleVarName, sizeof(CapsuleVarName)/sizeof(CHAR16), EFI_CAPSULE_VARIABLE_NAME);
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TempVarName = CapsuleVarName + StrLen (CapsuleVarName);
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if (mTimes > 0) {
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UnicodeValueToStringS (
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TempVarName,
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sizeof (CapsuleVarName) - ((UINTN)TempVarName - (UINTN)CapsuleVarName),
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0,
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mTimes,
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0
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);
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}
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//
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// ScatterGatherList is only referenced if the capsules are defined to persist across
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// system reset. Set its value into NV storage to let pre-boot driver to pick it up
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// after coming through a system reset.
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//
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Status = EfiSetVariable (
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CapsuleVarName,
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&gEfiCapsuleVendorGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,
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sizeof (UINTN),
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(VOID *) &ScatterGatherList
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);
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if (!EFI_ERROR (Status)) {
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//
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// Variable has been set successfully, increase variable index.
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//
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mTimes++;
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if(InitiateReset) {
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//
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// Firmware that encounters a capsule which has the CAPSULE_FLAGS_INITIATE_RESET Flag set in its header
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// will initiate a reset of the platform which is compatible with the passed-in capsule request and will
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// not return back to the caller.
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//
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EfiResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);
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}
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}
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return Status;
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}
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/**
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Returns if the capsule can be supported via UpdateCapsule().
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Notice: When PcdCapsuleInRamSupport is unsupported, even this routine returns a valid answer,
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the capsule still is unsupported via UpdateCapsule().
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@param CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules
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being passed into update capsule.
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@param CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in
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CaspuleHeaderArray.
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@param MaxiumCapsuleSize On output the maximum size that UpdateCapsule() can
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support as an argument to UpdateCapsule() via
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CapsuleHeaderArray and ScatterGatherList.
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@param ResetType Returns the type of reset required for the capsule update.
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@retval EFI_SUCCESS Valid answer returned.
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@retval EFI_UNSUPPORTED The capsule image is not supported on this platform, and
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MaximumCapsuleSize and ResetType are undefined.
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@retval EFI_INVALID_PARAMETER MaximumCapsuleSize is NULL, or ResetTyep is NULL,
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Or CapsuleCount is Zero, or CapsuleImage is not valid.
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**/
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EFI_STATUS
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EFIAPI
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QueryCapsuleCapabilities (
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IN EFI_CAPSULE_HEADER **CapsuleHeaderArray,
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IN UINTN CapsuleCount,
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OUT UINT64 *MaxiumCapsuleSize,
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OUT EFI_RESET_TYPE *ResetType
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)
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{
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EFI_STATUS Status;
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UINTN ArrayNumber;
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EFI_CAPSULE_HEADER *CapsuleHeader;
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BOOLEAN NeedReset;
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//
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// Capsule Count can't be less than one.
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//
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if (CapsuleCount < 1) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Check whether input parameter is valid
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//
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if ((MaxiumCapsuleSize == NULL) ||(ResetType == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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CapsuleHeader = NULL;
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NeedReset = FALSE;
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for (ArrayNumber = 0; ArrayNumber < CapsuleCount; ArrayNumber++) {
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CapsuleHeader = CapsuleHeaderArray[ArrayNumber];
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//
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// A capsule which has the CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE flag must have
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// CAPSULE_FLAGS_PERSIST_ACROSS_RESET set in its header as well.
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//
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if ((CapsuleHeader->Flags & (CAPSULE_FLAGS_PERSIST_ACROSS_RESET | CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE)) == CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// A capsule which has the CAPSULE_FLAGS_INITIATE_RESET flag must have
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// CAPSULE_FLAGS_PERSIST_ACROSS_RESET set in its header as well.
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//
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if ((CapsuleHeader->Flags & (CAPSULE_FLAGS_PERSIST_ACROSS_RESET | CAPSULE_FLAGS_INITIATE_RESET)) == CAPSULE_FLAGS_INITIATE_RESET) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Check FMP capsule flag
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//
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if (CompareGuid(&CapsuleHeader->CapsuleGuid, &gEfiFmpCapsuleGuid)
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&& (CapsuleHeader->Flags & CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) != 0 ) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Check Capsule image without populate flag is supported by firmware
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//
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if ((CapsuleHeader->Flags & CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) == 0) {
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Status = SupportCapsuleImage (CapsuleHeader);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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}
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}
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//
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// Find out whether there is any capsule defined to persist across system reset.
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//
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for (ArrayNumber = 0; ArrayNumber < CapsuleCount ; ArrayNumber++) {
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CapsuleHeader = CapsuleHeaderArray[ArrayNumber];
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if ((CapsuleHeader->Flags & CAPSULE_FLAGS_PERSIST_ACROSS_RESET) != 0) {
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NeedReset = TRUE;
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break;
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}
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}
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if (NeedReset) {
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//
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//Check if the platform supports update capsule across a system reset
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//
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if (!IsPersistAcrossResetCapsuleSupported ()) {
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return EFI_UNSUPPORTED;
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}
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*ResetType = EfiResetWarm;
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*MaxiumCapsuleSize = (UINT64) mMaxSizePopulateCapsule;
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} else {
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//
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// For non-reset capsule image.
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//
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*ResetType = EfiResetCold;
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*MaxiumCapsuleSize = (UINT64) mMaxSizeNonPopulateCapsule;
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}
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return EFI_SUCCESS;
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}
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/**
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This code installs UEFI capsule runtime service.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS UEFI Capsule Runtime Services are installed successfully.
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**/
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EFI_STATUS
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EFIAPI
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CapsuleServiceInitialize (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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mMaxSizePopulateCapsule = PcdGet32(PcdMaxSizePopulateCapsule);
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mMaxSizeNonPopulateCapsule = PcdGet32(PcdMaxSizeNonPopulateCapsule);
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//
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// When PEI phase is IA32, DXE phase is X64, it is possible that capsule data are
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// put above 4GB, so capsule PEI will transfer to long mode to get capsule data.
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// The page table and stack is used to transfer processor mode from IA32 to long mode.
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// Create the base address of page table and stack, and save them into variable.
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// This is not needed when capsule with reset type is not supported.
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//
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SaveLongModeContext ();
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//
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// Install capsule runtime services into UEFI runtime service tables.
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//
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gRT->UpdateCapsule = UpdateCapsule;
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gRT->QueryCapsuleCapabilities = QueryCapsuleCapabilities;
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//
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// Install the Capsule Architectural Protocol on a new handle
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// to signify the capsule runtime services are ready.
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&mNewHandle,
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&gEfiCapsuleArchProtocolGuid,
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NULL,
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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