CapsuleRuntimeDxe

Function Table

Address	Name
	CapsuleRuntimeDxeDriverEntryPoint
	CapsuleUpdateCapsule
	CapsuleQueryCapsuleCapabilities
	IsCapspaceGuidEqual
	ReadUnaligned64
	CheckCapsuleType
	GetCapsuleRuntimeProtocol
	ModuleEntryPoint
	DebugAssertInternal
	DebugPrint
	VirtualAddressChangeEvent
	ExitBootServicesEvent
	RuntimeCapsuleEvent
	CapsuleRuntimeVariableEvent
	AsmCpuid
Global	data - boot-time only references
EFI_HANDLE	gImageHandle = NULL;
Saved	copies for runtime transition
EFI_BOOT_SERVICES	*gBS_Runtime = NULL;
Capsule	configuration globals
UINT64	gCapsuleMaxSize = 104857600; // 100 MB
33	MB
Runtime	services function table (obtained via gBS->LocateProtocol)
and	the protocol GUID.
STATIC	*VOID mCapsuleRuntimeProtocol = NULL;**
EFI_GUID	{0x...} for the capsule runtime protocol (placeholder)
unk_3020	and unk_3030 are GUID structures used for GUID comparison
unk_3070	is a GUID table used by capsule type detection
Function	prototypes (forward declarations for local functions)
EFI_STATUS	EFIAPI
Initialize	UEFI Boot/Runtime Services Library state
and	register the capsule runtime protocol.
CapsuleRuntimeDxeDriverEntryPoint	(ImageHandle, SystemTable);
Install	the capsule runtime protocol.
or	gBS->InstallMultipleProtocolInterfaces. Here we approximate the
call	that sets up gRT->UpdateCapsule / gRT->QueryCapsuleCapabilities.
The	decompiled code writes:
offset	14
offset	15
Locate	and install the capsule runtime protocol
Status	= gBS->InstallMultipleProtocolInterfaces (
Assert	on failure (debug builds only)
DEBUG	((EFI_D_ERROR, "\nASSERT_EFI_ERROR (Status = %r)\n", Status));
UefiBootServicesTableLib	constructor
gImageHandle	= ImageHandle;
gRT	= SystemTable->RuntimeServices;
Save	copies for VirtualAddressChange event
gBS_Runtime	= gBS;
Create	VirtualAddressChange event (TPL_NOTIFY, EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE)
Status	= gBS->CreateEvent (
Create	ExitBootServices event (TPL_CALLBACK, EFI_EVENT_SIGNAL_EXIT_BOOT_SERVICES)
Status	= gBS->CreateEventEx (
UefiRuntimeLib	constructor: initialize HOB list and register runtime capsule event
if	(gRT == NULL) {
Create	event for runtime capsule update notification
Create	runtime event for capsule variable (EfiRuntimeServicesData)
CapsuleUpdateCapsule	(sub_14FC)
Check	capsule flags:
CapsuleFlag	bit 17 (0x20000) = POPULATE_SYSTEM_TABLE
CapsuleFlag	bit 18 (0x40000) = INITIATE_RESET
Combined	bit 17+18 (0x30000) mask
Combined	bit 18+19 (0x50000) mask
If	both bits 17 and 18 are clear (0x20000 check) or
bit	18 is set and bit 17 is clear (0x40000 check), this
capsule	needs runtime protocol validation.
if	**(((ThisCapsule->Flags & 0x30000) == 0x20000)	**
Populate	system table capsule - break out and process below
Not	a populate-system-table capsule; capsule type check required
Status	= CheckCapsuleType (ThisCapsule);
All	capsules processed, check if any need reset populate
if	(CapsuleCount == 0) {
All	capsules have bit 16 set - need a reset capsule
ReturnValue	= (UINT64)EFI_UNSUPPORTED;
Found	a capsule without bit 16 set
ReturnValue	= (UINT64)EFI_INVALID_PARAMETER;
If	we broke out above (populate system table capsule found)
fall	through to success path
return	EFI_SUCCESS;
CapsuleQueryCapsuleCapabilities	(sub_1608)
Same	capsule flag checks as UpdateCapsule
IsCapspaceGuidEqual	(sub_1710)
ReadUnaligned64	(sub_1778)
GetCapsuleRuntimeProtocol	(sub_17A8)
Check	if HOB list has room (<= 16 bytes header)
HobSize	= gBS->GetHobListSize ();
DebugAssert	(sub_1830)
Read	debug level from CMOS
DebugLevel	= IoRead8 (0x70);
Map	debug level to severity mask
switch	(DebugLevel) {
DebugPrint	(sub_18B0)
VirtualAddressChangeEvent	(sub_18F0)
ExitBootServicesEvent	(sub_18FC)
GetHobList	(sub_1924)
CheckCapsuleType	(sub_1A04)
First	check against 2 known capsule GUIDs in the local table
for	(TableIndex = 0; TableIndex < 2; TableIndex++) {
Then	check against the extern capsule GUID list
if	(&gExternCapsuleGuidList == NULL) {
RuntimeCapsuleEvent	(sub_1A94)
CapsuleRuntimeVariableEvent	(sub_1A8C)
AsmCpuid	(sub_1020)

Generated by HR650X BIOS Decompilation Project