2  *  EFI application boot time services
6  *  SPDX-License-Identifier:     GPL-2.0+
14 #include <u-boot/crc.h>
21 /* This list contains all the EFI objects our payload has access to */
25  * If we're running on nasty systems (32bit ARM booting into non-EFI Linux)
26  * we need to do trickery with caches. Since we don't want to break the EFI
28  * direct Linux EFI booting along the way - oh well).
33  * EFI can pass arbitrary additional "tables" containing vendor specific
44  * The "gd" pointer lives in a register on ARM and AArch64 that we declare
45  * fixed when compiling U-Boot. However, the payload does not know about that
47  * EFI callback entry/exit.
70 	int ret = --entry_count == 0;  in __efi_exit_check()
87  * to u-boot world so we can dump out an abort msg, without any care
93 	/* Only restore if we're already in EFI context */  in efi_restore_gd()
102  * enough for anyone ;-)
109 	return &indent[max - level];  in indent_string()
119 	return indent_string(--nesting_level);  in __efi_nesting_dec()
157 	if (event->signaled)  in efi_signal_event()
159 	event->signaled = 1;  in efi_signal_event()
160 	if (event->type & EVT_NOTIFY_SIGNAL) {  in efi_signal_event()
161 		EFI_CALL(event->notify_function(event, event->notify_context));  in efi_signal_event()
167 	debug("EFI: App called into unimplemented function %s\n", funcname);  in efi_unsupported()
272 		efi_events[i].trigger_next = -1ULL;  in efi_create_event()
334 		if (!(event->type & EVT_TIMER))  in efi_set_timer()
338 			event->trigger_next = -1ULL;  in efi_set_timer()
342 			event->trigger_next =  in efi_set_timer()
348 		event->trigger_type = type;  in efi_set_timer()
349 		event->trigger_time = trigger_time;  in efi_set_timer()
381 		if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL)  in efi_wait_for_event()
388 			if (event[i]->signaled)  in efi_wait_for_event()
400 	event[i]->signaled = 0;  in efi_wait_for_event()
428 			event->type = 0;  in efi_close_event()
429 			event->trigger_next = -1ULL;  in efi_close_event()
430 			event->signaled = 0;  in efi_close_event()
446 		if (!event->type || event->type & EVT_NOTIFY_SIGNAL)  in efi_check_event()
448 		if (event->signaled)  in efi_check_event()
479 		if (efiobj->handle != *handle)  in efi_install_protocol_interface()
482 		for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {  in efi_install_protocol_interface()
483 			struct efi_handler *handler = &efiobj->protocols[i];  in efi_install_protocol_interface()
485 			if (!handler->guid)  in efi_install_protocol_interface()
487 			if (!guidcmp(handler->guid, protocol)) {  in efi_install_protocol_interface()
493 		for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {  in efi_install_protocol_interface()
494 			struct efi_handler *handler = &efiobj->protocols[i];  in efi_install_protocol_interface()
496 			if (handler->guid)  in efi_install_protocol_interface()
499 			handler->guid = protocol;  in efi_install_protocol_interface()
500 			handler->protocol_interface = protocol_interface;  in efi_install_protocol_interface()
549 		if (efiobj->handle != handle)  in efi_uninstall_protocol_interface()
552 		for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {  in efi_uninstall_protocol_interface()
553 			struct efi_handler *handler = &efiobj->protocols[i];  in efi_uninstall_protocol_interface()
554 			const efi_guid_t *hprotocol = handler->guid;  in efi_uninstall_protocol_interface()
559 				if (handler->protocol_interface) {  in efi_uninstall_protocol_interface()
562 					handler->guid = 0;  in efi_uninstall_protocol_interface()
601 		return -1;  in efi_search()
603 		for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {  in efi_search()
604 			const efi_guid_t *guid = efiobj->protocols[i].guid;  in efi_search()
608 		return -1;  in efi_search()
611 	return -1;  in efi_search()
645 			*(buffer++) = efiobj->handle;  in efi_locate_handle()
676 	*device = efiobj->handle;  in efi_locate_device_path()
688 	memmove(this, next, (ulong)end - (ulong)next);  in efi_remove_configuration_table()
689 	systab.nr_tables--;  in efi_remove_configuration_table()
730  * protocols, boot-device, etc.
736 	obj->handle = info;  in efi_setup_loaded_image()
742 	obj->protocols[0].guid = &efi_guid_device_path;  in efi_setup_loaded_image()
743 	obj->protocols[0].protocol_interface = device_path;  in efi_setup_loaded_image()
749 	obj->protocols[1].guid = &efi_guid_loaded_image;  in efi_setup_loaded_image()
750 	obj->protocols[1].protocol_interface = info;  in efi_setup_loaded_image()
752 	obj->protocols[2].guid = &efi_guid_console_control;  in efi_setup_loaded_image()
753 	obj->protocols[2].protocol_interface = (void *)&efi_console_control;  in efi_setup_loaded_image()
755 	obj->protocols[3].guid = &efi_guid_device_path_to_text_protocol;  in efi_setup_loaded_image()
756 	obj->protocols[3].protocol_interface =  in efi_setup_loaded_image()
759 	info->file_path = file_path;  in efi_setup_loaded_image()
760 	info->device_handle = efi_dp_find_obj(device_path, NULL);  in efi_setup_loaded_image()
762 	list_add_tail(&obj->link, &efi_obj_list);  in efi_setup_loaded_image()
789 	obj->handle = info;  in efi_load_image()
790 	info->file_path = file_path;  in efi_load_image()
791 	info->reserved = efi_load_pe(source_buffer, info);  in efi_load_image()
792 	if (!info->reserved) {  in efi_load_image()
799 	list_add_tail(&obj->link, &efi_obj_list);  in efi_load_image()
812 	entry = info->reserved;  in efi_start_image()
817 	if (setjmp(&info->exit_jmp)) {  in efi_start_image()
819 		return EFI_EXIT(info->exit_status);  in efi_start_image()
841 	loaded_image_info->exit_status = exit_status;  in efi_exit()
842 	longjmp(&loaded_image_info->exit_jmp, 1);  in efi_exit()
844 	panic("EFI application exited");  in efi_exit()
854 		if (efiobj->handle == handle)  in efi_search_obj()
868 		list_del(&efiobj->link);  in efi_unload_image()
877 	 * Grub on 32bit ARM needs to have caches disabled before jumping into  in efi_exit_caches()
892 	/* Fix up caches for EFI payloads if necessary */  in efi_exit_boot_services()
990 		if (efiobj->handle != handle)  in efi_protocols_per_handle()
994 		for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {  in efi_protocols_per_handle()
995 			if (efiobj->protocols[i].guid)  in efi_protocols_per_handle()
1008 			for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) {  in efi_protocols_per_handle()
1009 				if (efiobj->protocols[i].guid) {  in efi_protocols_per_handle()
1011 						efiobj->protocols[i].guid;  in efi_protocols_per_handle()
1071 		for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {  in efi_locate_protocol()
1072 			struct efi_handler *handler = &efiobj->protocols[i];  in efi_locate_protocol()
1074 			if (!handler->guid)  in efi_locate_protocol()
1076 			if (!guidcmp(handler->guid, protocol)) {  in efi_locate_protocol()
1078 					handler->protocol_interface;  in efi_locate_protocol()
1121 	for (; i; --i) {  in efi_install_multiple_protocol_interfaces()
1204 		if (efiobj->handle != handle)  in efi_open_protocol()
1207 		for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {  in efi_open_protocol()
1208 			struct efi_handler *handler = &efiobj->protocols[i];  in efi_open_protocol()
1209 			const efi_guid_t *hprotocol = handler->guid;  in efi_open_protocol()
1216 						handler->protocol_interface;  in efi_open_protocol()
1290 	{ 'D','a','s',' ','U','-','b','o','o','t',0 };