def notify_protocol(self, handle, protocol, interface, from_hook): for (event_id, event_dic) in self.ql.loader.events.items(): if event_dic['Guid'] == protocol: if event_dic['CallbackArgs'] == None: # To support smm notification, we use None for CallbackArgs on SmmRegisterProtocolNotify # and updare it here. guid = str_to_guid(protocol) guid_ptr = self.heap.alloc(guid.sizeof()) guid.saveTo(self.ql, guid_ptr) event_dic['CallbackArgs'] = [guid_ptr, interface, handle] # The event was previously registered by 'RegisterProtocolNotify'. signal_event(self.ql, event_id) return execute_protocol_notifications(self.ql, from_hook)
def find(self, guid: str) -> Optional[int]:
ptr = self.baseptr
nitems = self.nitems
efi_guid = utils.str_to_guid(guid)
for _ in range(nitems):
entry = EFI_CONFIGURATION_TABLE.loadFrom(self.ql, ptr)
if utils.CompareGuid(entry.VendorGuid, efi_guid):
return ptr
ptr += EFI_CONFIGURATION_TABLE.sizeof()
return None
def install(self, guid: str, table: int):
ptr = self.find(guid)
append = ptr is None
if append:
ptr = self.baseptr + self.nitems * EFI_CONFIGURATION_TABLE.sizeof()
append = True
instance = EFI_CONFIGURATION_TABLE()
instance.VendorGuid = utils.str_to_guid(guid)
instance.VendorTable = table
instance.saveTo(self.ql, ptr)
if append:
self.nitems += 1
def install_configuration_table(self, guid: str, table: int): guid = guid.lower() confs = self.conf_table_array # find configuration table entry by guid. if found, idx would be set to the entry index # in the array. if not, idx would be set to one past end of array if guid not in confs: confs.append(guid) idx = confs.index(guid) ptr = self.conf_table_array_ptr + (idx * EFI_CONFIGURATION_TABLE.sizeof()) instance = EFI_CONFIGURATION_TABLE() instance.VendorGuid = str_to_guid(guid) instance.VendorTable = table instance.saveTo(self.ql, ptr)
def GetNextGuidHob(ql: Qiling, guid: str, hoblist: int) -> int:
"""Find next HOB with the specified GUID.
"""
hobguid = str_to_guid(guid)
hobaddr = hoblist
while True:
hobaddr = GetNextHob(ql, EFI_HOB_TYPE_GUID_EXTENSION, hobaddr)
if not hobaddr:
return 0
hob = EFI_HOB_GUID_TYPE.loadFrom(ql, hobaddr)
if CompareGuid(hob.Name, hobguid):
break
hobaddr += hob.Header.HobLength
return hobaddr