1 // SPDX-License-Identifier: GPL-2.0+
3 * UEFI Shell-like command
5 * Copyright (c) 2018 AKASHI Takahiro, Linaro Limited
11 #include <efi_loader.h>
18 #include <linux/ctype.h>
20 #define BS systab.boottime
23 * efi_get_device_handle_info() - get information of UEFI device
25 * @handle: Handle of UEFI device
26 * @dev_path_text: Pointer to text of device path
27 * Return: 0 on success, -1 on failure
29 * Currently return a formatted text of device path.
31 static int efi_get_device_handle_info(efi_handle_t handle
, u16
**dev_path_text
)
33 struct efi_device_path
*dp
;
36 ret
= EFI_CALL(BS
->open_protocol(handle
, &efi_guid_device_path
,
37 (void **)&dp
, NULL
/* FIXME */, NULL
,
38 EFI_OPEN_PROTOCOL_GET_PROTOCOL
));
39 if (ret
== EFI_SUCCESS
) {
40 *dev_path_text
= efi_dp_str(dp
);
47 #define EFI_HANDLE_WIDTH ((int)sizeof(efi_handle_t) * 2)
49 static const char spc
[] = " ";
50 static const char sep
[] = "================";
53 * do_efi_show_devices() - show UEFI devices
55 * @cmdtp: Command table
57 * @argc: Number of arguments
58 * @argv: Argument array
59 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
61 * Implement efidebug "devices" sub-command.
62 * Show all UEFI devices and their information.
64 static int do_efi_show_devices(struct cmd_tbl
*cmdtp
, int flag
,
65 int argc
, char *const argv
[])
67 efi_handle_t
*handles
;
72 ret
= EFI_CALL(efi_locate_handle_buffer(ALL_HANDLES
, NULL
, NULL
,
74 if (ret
!= EFI_SUCCESS
)
75 return CMD_RET_FAILURE
;
78 return CMD_RET_SUCCESS
;
80 printf("Device%.*s Device Path\n", EFI_HANDLE_WIDTH
- 6, spc
);
81 printf("%.*s ====================\n", EFI_HANDLE_WIDTH
, sep
);
82 for (i
= 0; i
< num
; i
++) {
83 if (!efi_get_device_handle_info(handles
[i
], &dev_path_text
)) {
84 printf("%p %ls\n", handles
[i
], dev_path_text
);
85 efi_free_pool(dev_path_text
);
89 efi_free_pool(handles
);
91 return CMD_RET_SUCCESS
;
95 * efi_get_driver_handle_info() - get information of UEFI driver
97 * @handle: Handle of UEFI device
98 * @driver_name: Driver name
99 * @image_path: Pointer to text of device path
100 * Return: 0 on success, -1 on failure
102 * Currently return no useful information as all UEFI drivers are
105 static int efi_get_driver_handle_info(efi_handle_t handle
, u16
**driver_name
,
108 struct efi_handler
*handler
;
109 struct efi_loaded_image
*image
;
114 * TODO: support EFI_COMPONENT_NAME2_PROTOCOL
119 ret
= efi_search_protocol(handle
, &efi_guid_loaded_image
, &handler
);
120 if (ret
!= EFI_SUCCESS
) {
125 image
= handler
->protocol_interface
;
126 *image_path
= efi_dp_str(image
->file_path
);
132 * do_efi_show_drivers() - show UEFI drivers
134 * @cmdtp: Command table
135 * @flag: Command flag
136 * @argc: Number of arguments
137 * @argv: Argument array
138 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
140 * Implement efidebug "drivers" sub-command.
141 * Show all UEFI drivers and their information.
143 static int do_efi_show_drivers(struct cmd_tbl
*cmdtp
, int flag
,
144 int argc
, char *const argv
[])
146 efi_handle_t
*handles
;
148 u16
*driver_name
, *image_path_text
;
151 ret
= EFI_CALL(efi_locate_handle_buffer(
152 BY_PROTOCOL
, &efi_guid_driver_binding_protocol
,
153 NULL
, &num
, &handles
));
154 if (ret
!= EFI_SUCCESS
)
155 return CMD_RET_FAILURE
;
158 return CMD_RET_SUCCESS
;
160 printf("Driver%.*s Name Image Path\n",
161 EFI_HANDLE_WIDTH
- 6, spc
);
162 printf("%.*s ==================== ====================\n",
163 EFI_HANDLE_WIDTH
, sep
);
164 for (i
= 0; i
< num
; i
++) {
165 if (!efi_get_driver_handle_info(handles
[i
], &driver_name
,
168 printf("%p %-20ls %ls\n", handles
[i
],
169 driver_name
, image_path_text
);
171 printf("%p %-20ls <built-in>\n",
172 handles
[i
], driver_name
);
173 efi_free_pool(driver_name
);
174 efi_free_pool(image_path_text
);
178 efi_free_pool(handles
);
180 return CMD_RET_SUCCESS
;
183 static const struct {
185 const efi_guid_t guid
;
189 EFI_DEVICE_PATH_PROTOCOL_GUID
,
192 "Device Path To Text",
193 EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID
,
196 "Device Path Utilities",
197 EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID
,
200 "Unicode Collation 2",
201 EFI_UNICODE_COLLATION_PROTOCOL2_GUID
,
205 EFI_DRIVER_BINDING_PROTOCOL_GUID
,
209 EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID
,
212 "Simple Text Input Ex",
213 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID
,
216 "Simple Text Output",
217 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID
,
221 EFI_BLOCK_IO_PROTOCOL_GUID
,
224 "Simple File System",
225 EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID
,
229 EFI_LOADED_IMAGE_PROTOCOL_GUID
,
233 EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID
,
237 EFI_HII_STRING_PROTOCOL_GUID
,
241 EFI_HII_DATABASE_PROTOCOL_GUID
,
244 "HII Config Routing",
245 EFI_HII_CONFIG_ROUTING_PROTOCOL_GUID
,
249 EFI_LOAD_FILE2_PROTOCOL_GUID
,
253 EFI_SIMPLE_NETWORK_PROTOCOL_GUID
,
257 EFI_PXE_BASE_CODE_PROTOCOL_GUID
,
259 /* Configuration table GUIDs */
273 "Runtime properties",
274 EFI_RT_PROPERTIES_TABLE_GUID
,
279 * get_guid_text - get string of GUID
281 * Return description of GUID.
284 * Return: description of GUID or NULL
286 static const char *get_guid_text(const void *guid
)
290 for (i
= 0; i
< ARRAY_SIZE(guid_list
); i
++) {
292 * As guidcmp uses memcmp() we can safely accept unaligned
295 if (!guidcmp(&guid_list
[i
].guid
, guid
))
296 return guid_list
[i
].text
;
303 * do_efi_show_handles() - show UEFI handles
305 * @cmdtp: Command table
306 * @flag: Command flag
307 * @argc: Number of arguments
308 * @argv: Argument array
309 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
311 * Implement efidebug "dh" sub-command.
312 * Show all UEFI handles and their information, currently all protocols
315 static int do_efi_show_handles(struct cmd_tbl
*cmdtp
, int flag
,
316 int argc
, char *const argv
[])
318 efi_handle_t
*handles
;
320 efi_uintn_t num
, count
, i
, j
;
321 const char *guid_text
;
324 ret
= EFI_CALL(efi_locate_handle_buffer(ALL_HANDLES
, NULL
, NULL
,
326 if (ret
!= EFI_SUCCESS
)
327 return CMD_RET_FAILURE
;
330 return CMD_RET_SUCCESS
;
332 printf("Handle%.*s Protocols\n", EFI_HANDLE_WIDTH
- 6, spc
);
333 printf("%.*s ====================\n", EFI_HANDLE_WIDTH
, sep
);
334 for (i
= 0; i
< num
; i
++) {
335 printf("%p", handles
[i
]);
336 ret
= EFI_CALL(BS
->protocols_per_handle(handles
[i
], &guid
,
343 for (j
= 0; j
< count
; j
++) {
349 guid_text
= get_guid_text(guid
[j
]);
353 printf("%pUl", guid
[j
]);
358 efi_free_pool(handles
);
360 return CMD_RET_SUCCESS
;
364 * do_efi_show_images() - show UEFI images
366 * @cmdtp: Command table
367 * @flag: Command flag
368 * @argc: Number of arguments
369 * @argv: Argument array
370 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
372 * Implement efidebug "images" sub-command.
373 * Show all UEFI loaded images and their information.
375 static int do_efi_show_images(struct cmd_tbl
*cmdtp
, int flag
,
376 int argc
, char *const argv
[])
378 efi_print_image_infos(NULL
);
380 return CMD_RET_SUCCESS
;
383 static const char * const efi_mem_type_string
[] = {
384 [EFI_RESERVED_MEMORY_TYPE
] = "RESERVED",
385 [EFI_LOADER_CODE
] = "LOADER CODE",
386 [EFI_LOADER_DATA
] = "LOADER DATA",
387 [EFI_BOOT_SERVICES_CODE
] = "BOOT CODE",
388 [EFI_BOOT_SERVICES_DATA
] = "BOOT DATA",
389 [EFI_RUNTIME_SERVICES_CODE
] = "RUNTIME CODE",
390 [EFI_RUNTIME_SERVICES_DATA
] = "RUNTIME DATA",
391 [EFI_CONVENTIONAL_MEMORY
] = "CONVENTIONAL",
392 [EFI_UNUSABLE_MEMORY
] = "UNUSABLE MEM",
393 [EFI_ACPI_RECLAIM_MEMORY
] = "ACPI RECLAIM MEM",
394 [EFI_ACPI_MEMORY_NVS
] = "ACPI NVS",
395 [EFI_MMAP_IO
] = "IO",
396 [EFI_MMAP_IO_PORT
] = "IO PORT",
397 [EFI_PAL_CODE
] = "PAL",
398 [EFI_PERSISTENT_MEMORY_TYPE
] = "PERSISTENT",
401 static const struct efi_mem_attrs
{
404 } efi_mem_attrs
[] = {
405 {EFI_MEMORY_UC
, "UC"},
406 {EFI_MEMORY_UC
, "UC"},
407 {EFI_MEMORY_WC
, "WC"},
408 {EFI_MEMORY_WT
, "WT"},
409 {EFI_MEMORY_WB
, "WB"},
410 {EFI_MEMORY_UCE
, "UCE"},
411 {EFI_MEMORY_WP
, "WP"},
412 {EFI_MEMORY_RP
, "RP"},
413 {EFI_MEMORY_XP
, "WP"},
414 {EFI_MEMORY_NV
, "NV"},
415 {EFI_MEMORY_MORE_RELIABLE
, "REL"},
416 {EFI_MEMORY_RO
, "RO"},
417 {EFI_MEMORY_SP
, "SP"},
418 {EFI_MEMORY_RUNTIME
, "RT"},
422 * print_memory_attributes() - print memory map attributes
424 * @attributes: Attribute value
426 * Print memory map attributes
428 static void print_memory_attributes(u64 attributes
)
432 for (sep
= 0, i
= 0; i
< ARRAY_SIZE(efi_mem_attrs
); i
++)
433 if (attributes
& efi_mem_attrs
[i
].bit
) {
440 puts(efi_mem_attrs
[i
].text
);
444 #define EFI_PHYS_ADDR_WIDTH (int)(sizeof(efi_physical_addr_t) * 2)
447 * do_efi_show_memmap() - show UEFI memory map
449 * @cmdtp: Command table
450 * @flag: Command flag
451 * @argc: Number of arguments
452 * @argv: Argument array
453 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
455 * Implement efidebug "memmap" sub-command.
456 * Show UEFI memory map.
458 static int do_efi_show_memmap(struct cmd_tbl
*cmdtp
, int flag
,
459 int argc
, char *const argv
[])
461 struct efi_mem_desc
*memmap
= NULL
, *map
;
462 efi_uintn_t map_size
= 0;
467 ret
= efi_get_memory_map(&map_size
, memmap
, NULL
, NULL
, NULL
);
468 if (ret
== EFI_BUFFER_TOO_SMALL
) {
469 map_size
+= sizeof(struct efi_mem_desc
); /* for my own */
470 ret
= efi_allocate_pool(EFI_LOADER_DATA
, map_size
,
472 if (ret
!= EFI_SUCCESS
)
473 return CMD_RET_FAILURE
;
474 ret
= efi_get_memory_map(&map_size
, memmap
, NULL
, NULL
, NULL
);
476 if (ret
!= EFI_SUCCESS
) {
477 efi_free_pool(memmap
);
478 return CMD_RET_FAILURE
;
481 printf("Type Start%.*s End%.*s Attributes\n",
482 EFI_PHYS_ADDR_WIDTH
- 5, spc
, EFI_PHYS_ADDR_WIDTH
- 3, spc
);
483 printf("================ %.*s %.*s ==========\n",
484 EFI_PHYS_ADDR_WIDTH
, sep
, EFI_PHYS_ADDR_WIDTH
, sep
);
486 * Coverity check: dereferencing null pointer "map."
487 * This is a false positive as memmap will always be
488 * populated by allocate_pool() above.
490 for (i
= 0, map
= memmap
; i
< map_size
/ sizeof(*map
); map
++, i
++) {
491 if (map
->type
< ARRAY_SIZE(efi_mem_type_string
))
492 type
= efi_mem_type_string
[map
->type
];
496 printf("%-16s %.*llx-%.*llx", type
,
498 (u64
)map_to_sysmem((void *)(uintptr_t)
499 map
->physical_start
),
501 (u64
)map_to_sysmem((void *)(uintptr_t)
502 (map
->physical_start
+
503 map
->num_pages
* EFI_PAGE_SIZE
)));
505 print_memory_attributes(map
->attribute
);
509 efi_free_pool(memmap
);
511 return CMD_RET_SUCCESS
;
515 * do_efi_show_tables() - show UEFI configuration tables
517 * @cmdtp: Command table
518 * @flag: Command flag
519 * @argc: Number of arguments
520 * @argv: Argument array
521 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
523 * Implement efidebug "tables" sub-command.
524 * Show UEFI configuration tables.
526 static int do_efi_show_tables(struct cmd_tbl
*cmdtp
, int flag
,
527 int argc
, char *const argv
[])
530 const char *guid_str
;
532 for (i
= 0; i
< systab
.nr_tables
; ++i
) {
533 guid_str
= get_guid_text(&systab
.tables
[i
].guid
);
536 printf("%pUl %s\n", &systab
.tables
[i
].guid
, guid_str
);
539 return CMD_RET_SUCCESS
;
543 * do_efi_boot_add() - set UEFI load option
545 * @cmdtp: Command table
546 * @flag: Command flag
547 * @argc: Number of arguments
548 * @argv: Argument array
549 * Return: CMD_RET_SUCCESS on success,
550 * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
552 * Implement efidebug "boot add" sub-command. Create or change UEFI load option.
554 * efidebug boot add <id> <label> <interface> <devnum>[:<part>] <file> <options>
556 static int do_efi_boot_add(struct cmd_tbl
*cmdtp
, int flag
,
557 int argc
, char *const argv
[])
562 u16 var_name16
[9], *p
;
564 size_t label_len
, label_len16
;
566 struct efi_device_path
*device_path
= NULL
, *file_path
= NULL
;
567 struct efi_load_option lo
;
571 int r
= CMD_RET_SUCCESS
;
573 if (argc
< 6 || argc
> 7)
574 return CMD_RET_USAGE
;
576 id
= (int)simple_strtoul(argv
[1], &endp
, 16);
577 if (*endp
!= '\0' || id
> 0xffff)
578 return CMD_RET_USAGE
;
580 sprintf(var_name
, "Boot%04X", id
);
582 utf8_utf16_strncpy(&p
, var_name
, 9);
584 guid
= efi_global_variable_guid
;
587 lo
.attributes
= LOAD_OPTION_ACTIVE
; /* always ACTIVE */
590 label_len
= strlen(argv
[2]);
591 label_len16
= utf8_utf16_strnlen(argv
[2], label_len
);
592 label
= malloc((label_len16
+ 1) * sizeof(u16
));
594 return CMD_RET_FAILURE
;
595 lo
.label
= label
; /* label will be changed below */
596 utf8_utf16_strncpy(&label
, argv
[2], label_len
);
599 ret
= efi_dp_from_name(argv
[3], argv
[4], argv
[5], &device_path
,
601 if (ret
!= EFI_SUCCESS
) {
602 printf("Cannot create device path for \"%s %s\"\n",
607 lo
.file_path
= file_path
;
608 lo
.file_path_length
= efi_dp_size(file_path
)
609 + sizeof(struct efi_device_path
); /* for END */
613 lo
.optional_data
= NULL
;
615 lo
.optional_data
= (const u8
*)argv
[6];
617 size
= efi_serialize_load_option(&lo
, (u8
**)&data
);
623 ret
= EFI_CALL(efi_set_variable(var_name16
, &guid
,
624 EFI_VARIABLE_NON_VOLATILE
|
625 EFI_VARIABLE_BOOTSERVICE_ACCESS
|
626 EFI_VARIABLE_RUNTIME_ACCESS
,
628 if (ret
!= EFI_SUCCESS
) {
629 printf("Cannot set %ls\n", var_name16
);
634 efi_free_pool(device_path
);
635 efi_free_pool(file_path
);
642 * do_efi_boot_rm() - delete UEFI load options
644 * @cmdtp: Command table
645 * @flag: Command flag
646 * @argc: Number of arguments
647 * @argv: Argument array
648 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
650 * Implement efidebug "boot rm" sub-command.
651 * Delete UEFI load options.
653 * efidebug boot rm <id> ...
655 static int do_efi_boot_rm(struct cmd_tbl
*cmdtp
, int flag
,
656 int argc
, char *const argv
[])
662 u16 var_name16
[9], *p
;
666 return CMD_RET_USAGE
;
668 guid
= efi_global_variable_guid
;
669 for (i
= 1; i
< argc
; i
++, argv
++) {
670 id
= (int)simple_strtoul(argv
[1], &endp
, 16);
671 if (*endp
!= '\0' || id
> 0xffff)
672 return CMD_RET_FAILURE
;
674 sprintf(var_name
, "Boot%04X", id
);
676 utf8_utf16_strncpy(&p
, var_name
, 9);
678 ret
= EFI_CALL(efi_set_variable(var_name16
, &guid
, 0, 0, NULL
));
680 printf("Cannot remove %ls\n", var_name16
);
681 return CMD_RET_FAILURE
;
685 return CMD_RET_SUCCESS
;
689 * show_efi_boot_opt_data() - dump UEFI load option
691 * @varname16: variable name
692 * @data: value of UEFI load option variable
693 * @size: size of the boot option
695 * Decode the value of UEFI load option variable and print information.
697 static void show_efi_boot_opt_data(u16
*varname16
, void *data
, size_t size
)
699 struct efi_load_option lo
;
701 size_t label_len16
, label_len
;
704 efi_deserialize_load_option(&lo
, data
);
706 label_len16
= u16_strlen(lo
.label
);
707 label_len
= utf16_utf8_strnlen(lo
.label
, label_len16
);
708 label
= malloc(label_len
+ 1);
712 utf16_utf8_strncpy(&p
, lo
.label
, label_len16
);
714 printf("%ls:\nattributes: %c%c%c (0x%08x)\n",
717 lo
.attributes
& LOAD_OPTION_ACTIVE
? 'A' : '-',
718 /* FORCE RECONNECT */
719 lo
.attributes
& LOAD_OPTION_FORCE_RECONNECT
? 'R' : '-',
721 lo
.attributes
& LOAD_OPTION_HIDDEN
? 'H' : '-',
723 printf(" label: %s\n", label
);
725 dp_str
= efi_dp_str(lo
.file_path
);
726 printf(" file_path: %ls\n", dp_str
);
727 efi_free_pool(dp_str
);
730 print_hex_dump(" ", DUMP_PREFIX_OFFSET
, 16, 1,
731 lo
.optional_data
, size
+ (u8
*)data
-
732 (u8
*)lo
.optional_data
, true);
737 * show_efi_boot_opt() - dump UEFI load option
739 * @varname16: variable name
741 * Dump information defined by UEFI load option.
743 static void show_efi_boot_opt(u16
*varname16
)
750 ret
= EFI_CALL(efi_get_variable(varname16
, &efi_global_variable_guid
,
752 if (ret
== EFI_BUFFER_TOO_SMALL
) {
755 printf("ERROR: Out of memory\n");
758 ret
= EFI_CALL(efi_get_variable(varname16
,
759 &efi_global_variable_guid
,
761 if (ret
== EFI_SUCCESS
)
762 show_efi_boot_opt_data(varname16
, data
, size
);
767 static int u16_tohex(u16 c
)
769 if (c
>= '0' && c
<= '9')
771 if (c
>= 'A' && c
<= 'F')
774 /* not hexadecimal */
779 * show_efi_boot_dump() - dump all UEFI load options
781 * @cmdtp: Command table
782 * @flag: Command flag
783 * @argc: Number of arguments
784 * @argv: Argument array
785 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
787 * Implement efidebug "boot dump" sub-command.
788 * Dump information of all UEFI load options defined.
792 static int do_efi_boot_dump(struct cmd_tbl
*cmdtp
, int flag
,
793 int argc
, char *const argv
[])
796 efi_uintn_t buf_size
, size
;
802 return CMD_RET_USAGE
;
805 var_name16
= malloc(buf_size
);
807 return CMD_RET_FAILURE
;
812 ret
= EFI_CALL(efi_get_next_variable_name(&size
, var_name16
,
814 if (ret
== EFI_NOT_FOUND
)
816 if (ret
== EFI_BUFFER_TOO_SMALL
) {
818 p
= realloc(var_name16
, buf_size
);
821 return CMD_RET_FAILURE
;
824 ret
= EFI_CALL(efi_get_next_variable_name(&size
,
828 if (ret
!= EFI_SUCCESS
) {
830 return CMD_RET_FAILURE
;
833 if (memcmp(var_name16
, L
"Boot", 8))
836 for (id
= 0, i
= 0; i
< 4; i
++) {
837 digit
= u16_tohex(var_name16
[4 + i
]);
840 id
= (id
<< 4) + digit
;
842 if (i
== 4 && !var_name16
[8])
843 show_efi_boot_opt(var_name16
);
848 return CMD_RET_SUCCESS
;
852 * show_efi_boot_order() - show order of UEFI load options
854 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
856 * Show order of UEFI load options defined by BootOrder variable.
858 static int show_efi_boot_order(void)
864 u16 var_name16
[9], *p16
;
866 struct efi_load_option lo
;
868 size_t label_len16
, label_len
;
872 ret
= EFI_CALL(efi_get_variable(L
"BootOrder", &efi_global_variable_guid
,
874 if (ret
!= EFI_BUFFER_TOO_SMALL
) {
875 if (ret
== EFI_NOT_FOUND
) {
876 printf("BootOrder not defined\n");
877 return CMD_RET_SUCCESS
;
879 return CMD_RET_FAILURE
;
882 bootorder
= malloc(size
);
884 printf("ERROR: Out of memory\n");
885 return CMD_RET_FAILURE
;
887 ret
= EFI_CALL(efi_get_variable(L
"BootOrder", &efi_global_variable_guid
,
888 NULL
, &size
, bootorder
));
889 if (ret
!= EFI_SUCCESS
) {
890 ret
= CMD_RET_FAILURE
;
894 num
= size
/ sizeof(u16
);
895 for (i
= 0; i
< num
; i
++) {
896 sprintf(var_name
, "Boot%04X", bootorder
[i
]);
898 utf8_utf16_strncpy(&p16
, var_name
, 9);
901 ret
= EFI_CALL(efi_get_variable(var_name16
,
902 &efi_global_variable_guid
, NULL
,
904 if (ret
!= EFI_BUFFER_TOO_SMALL
) {
905 printf("%2d: %s: (not defined)\n", i
+ 1, var_name
);
911 ret
= CMD_RET_FAILURE
;
914 ret
= EFI_CALL(efi_get_variable(var_name16
,
915 &efi_global_variable_guid
, NULL
,
917 if (ret
!= EFI_SUCCESS
) {
919 ret
= CMD_RET_FAILURE
;
923 efi_deserialize_load_option(&lo
, data
);
925 label_len16
= u16_strlen(lo
.label
);
926 label_len
= utf16_utf8_strnlen(lo
.label
, label_len16
);
927 label
= malloc(label_len
+ 1);
930 ret
= CMD_RET_FAILURE
;
934 utf16_utf8_strncpy(&p
, lo
.label
, label_len16
);
935 printf("%2d: %s: %s\n", i
+ 1, var_name
, label
);
947 * do_efi_boot_next() - manage UEFI BootNext variable
949 * @cmdtp: Command table
950 * @flag: Command flag
951 * @argc: Number of arguments
952 * @argv: Argument array
953 * Return: CMD_RET_SUCCESS on success,
954 * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
956 * Implement efidebug "boot next" sub-command.
957 * Set BootNext variable.
959 * efidebug boot next <id>
961 static int do_efi_boot_next(struct cmd_tbl
*cmdtp
, int flag
,
962 int argc
, char *const argv
[])
969 int r
= CMD_RET_SUCCESS
;
972 return CMD_RET_USAGE
;
974 bootnext
= (u16
)simple_strtoul(argv
[1], &endp
, 16);
976 printf("invalid value: %s\n", argv
[1]);
981 guid
= efi_global_variable_guid
;
983 ret
= EFI_CALL(efi_set_variable(L
"BootNext", &guid
,
984 EFI_VARIABLE_NON_VOLATILE
|
985 EFI_VARIABLE_BOOTSERVICE_ACCESS
|
986 EFI_VARIABLE_RUNTIME_ACCESS
,
988 if (ret
!= EFI_SUCCESS
) {
989 printf("Cannot set BootNext\n");
997 * do_efi_boot_order() - manage UEFI BootOrder variable
999 * @cmdtp: Command table
1000 * @flag: Command flag
1001 * @argc: Number of arguments
1002 * @argv: Argument array
1003 * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
1005 * Implement efidebug "boot order" sub-command.
1006 * Show order of UEFI load options, or change it in BootOrder variable.
1008 * efidebug boot order [<id> ...]
1010 static int do_efi_boot_order(struct cmd_tbl
*cmdtp
, int flag
,
1011 int argc
, char *const argv
[])
1013 u16
*bootorder
= NULL
;
1019 int r
= CMD_RET_SUCCESS
;
1022 return show_efi_boot_order();
1027 size
= argc
* sizeof(u16
);
1028 bootorder
= malloc(size
);
1030 return CMD_RET_FAILURE
;
1032 for (i
= 0; i
< argc
; i
++) {
1033 id
= (int)simple_strtoul(argv
[i
], &endp
, 16);
1034 if (*endp
!= '\0' || id
> 0xffff) {
1035 printf("invalid value: %s\n", argv
[i
]);
1036 r
= CMD_RET_FAILURE
;
1040 bootorder
[i
] = (u16
)id
;
1043 guid
= efi_global_variable_guid
;
1044 ret
= EFI_CALL(efi_set_variable(L
"BootOrder", &guid
,
1045 EFI_VARIABLE_NON_VOLATILE
|
1046 EFI_VARIABLE_BOOTSERVICE_ACCESS
|
1047 EFI_VARIABLE_RUNTIME_ACCESS
,
1049 if (ret
!= EFI_SUCCESS
) {
1050 printf("Cannot set BootOrder\n");
1051 r
= CMD_RET_FAILURE
;
1059 static struct cmd_tbl cmd_efidebug_boot_sub
[] = {
1060 U_BOOT_CMD_MKENT(add
, CONFIG_SYS_MAXARGS
, 1, do_efi_boot_add
, "", ""),
1061 U_BOOT_CMD_MKENT(rm
, CONFIG_SYS_MAXARGS
, 1, do_efi_boot_rm
, "", ""),
1062 U_BOOT_CMD_MKENT(dump
, CONFIG_SYS_MAXARGS
, 1, do_efi_boot_dump
, "", ""),
1063 U_BOOT_CMD_MKENT(next
, CONFIG_SYS_MAXARGS
, 1, do_efi_boot_next
, "", ""),
1064 U_BOOT_CMD_MKENT(order
, CONFIG_SYS_MAXARGS
, 1, do_efi_boot_order
,
1069 * do_efi_boot_opt() - manage UEFI load options
1071 * @cmdtp: Command table
1072 * @flag: Command flag
1073 * @argc: Number of arguments
1074 * @argv: Argument array
1075 * Return: CMD_RET_SUCCESS on success,
1076 * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1078 * Implement efidebug "boot" sub-command.
1080 static int do_efi_boot_opt(struct cmd_tbl
*cmdtp
, int flag
,
1081 int argc
, char *const argv
[])
1086 return CMD_RET_USAGE
;
1090 cp
= find_cmd_tbl(argv
[0], cmd_efidebug_boot_sub
,
1091 ARRAY_SIZE(cmd_efidebug_boot_sub
));
1093 return CMD_RET_USAGE
;
1095 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
1099 * do_efi_test_bootmgr() - run simple bootmgr for test
1101 * @cmdtp: Command table
1102 * @flag: Command flag
1103 * @argc: Number of arguments
1104 * @argv: Argument array
1105 * Return: CMD_RET_SUCCESS on success,
1106 * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1108 * Implement efidebug "test bootmgr" sub-command.
1109 * Run simple bootmgr for test.
1111 * efidebug test bootmgr
1113 static int do_efi_test_bootmgr(struct cmd_tbl
*cmdtp
, int flag
,
1114 int argc
, char * const argv
[])
1117 efi_uintn_t exit_data_size
= 0;
1118 u16
*exit_data
= NULL
;
1121 ret
= efi_bootmgr_load(&image
);
1122 printf("efi_bootmgr_load() returned: %ld\n", ret
& ~EFI_ERROR_MASK
);
1124 /* We call efi_start_image() even if error for test purpose. */
1125 ret
= EFI_CALL(efi_start_image(image
, &exit_data_size
, &exit_data
));
1126 printf("efi_start_image() returned: %ld\n", ret
& ~EFI_ERROR_MASK
);
1127 if (ret
&& exit_data
)
1128 efi_free_pool(exit_data
);
1132 return CMD_RET_SUCCESS
;
1135 static struct cmd_tbl cmd_efidebug_test_sub
[] = {
1136 U_BOOT_CMD_MKENT(bootmgr
, CONFIG_SYS_MAXARGS
, 1, do_efi_test_bootmgr
,
1141 * do_efi_test() - manage UEFI load options
1143 * @cmdtp: Command table
1144 * @flag: Command flag
1145 * @argc: Number of arguments
1146 * @argv: Argument array
1147 * Return: CMD_RET_SUCCESS on success,
1148 * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1150 * Implement efidebug "test" sub-command.
1152 static int do_efi_test(struct cmd_tbl
*cmdtp
, int flag
,
1153 int argc
, char * const argv
[])
1158 return CMD_RET_USAGE
;
1162 cp
= find_cmd_tbl(argv
[0], cmd_efidebug_test_sub
,
1163 ARRAY_SIZE(cmd_efidebug_test_sub
));
1165 return CMD_RET_USAGE
;
1167 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
1171 * do_efi_query_info() - QueryVariableInfo EFI service
1173 * @cmdtp: Command table
1174 * @flag: Command flag
1175 * @argc: Number of arguments
1176 * @argv: Argument array
1177 * Return: CMD_RET_SUCCESS on success,
1178 * CMD_RET_USAGE or CMD_RET_FAILURE on failure
1180 * Implement efidebug "test" sub-command.
1183 static int do_efi_query_info(struct cmd_tbl
*cmdtp
, int flag
,
1184 int argc
, char * const argv
[])
1188 u64 max_variable_storage_size
;
1189 u64 remain_variable_storage_size
;
1190 u64 max_variable_size
;
1193 for (i
= 1; i
< argc
; i
++) {
1194 if (!strcmp(argv
[i
], "-bs"))
1195 attr
|= EFI_VARIABLE_BOOTSERVICE_ACCESS
;
1196 else if (!strcmp(argv
[i
], "-rt"))
1197 attr
|= EFI_VARIABLE_RUNTIME_ACCESS
;
1198 else if (!strcmp(argv
[i
], "-nv"))
1199 attr
|= EFI_VARIABLE_NON_VOLATILE
;
1200 else if (!strcmp(argv
[i
], "-at"))
1202 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS
;
1205 ret
= EFI_CALL(efi_query_variable_info(attr
,
1206 &max_variable_storage_size
,
1207 &remain_variable_storage_size
,
1208 &max_variable_size
));
1209 if (ret
!= EFI_SUCCESS
) {
1210 printf("Error: Cannot query UEFI variables, r = %lu\n",
1211 ret
& ~EFI_ERROR_MASK
);
1212 return CMD_RET_FAILURE
;
1215 printf("Max storage size %llu\n", max_variable_storage_size
);
1216 printf("Remaining storage size %llu\n", remain_variable_storage_size
);
1217 printf("Max variable size %llu\n", max_variable_size
);
1219 return CMD_RET_SUCCESS
;
1222 static struct cmd_tbl cmd_efidebug_sub
[] = {
1223 U_BOOT_CMD_MKENT(boot
, CONFIG_SYS_MAXARGS
, 1, do_efi_boot_opt
, "", ""),
1224 U_BOOT_CMD_MKENT(devices
, CONFIG_SYS_MAXARGS
, 1, do_efi_show_devices
,
1226 U_BOOT_CMD_MKENT(drivers
, CONFIG_SYS_MAXARGS
, 1, do_efi_show_drivers
,
1228 U_BOOT_CMD_MKENT(dh
, CONFIG_SYS_MAXARGS
, 1, do_efi_show_handles
,
1230 U_BOOT_CMD_MKENT(images
, CONFIG_SYS_MAXARGS
, 1, do_efi_show_images
,
1232 U_BOOT_CMD_MKENT(memmap
, CONFIG_SYS_MAXARGS
, 1, do_efi_show_memmap
,
1234 U_BOOT_CMD_MKENT(tables
, CONFIG_SYS_MAXARGS
, 1, do_efi_show_tables
,
1236 U_BOOT_CMD_MKENT(test
, CONFIG_SYS_MAXARGS
, 1, do_efi_test
,
1238 U_BOOT_CMD_MKENT(query
, CONFIG_SYS_MAXARGS
, 1, do_efi_query_info
,
1243 * do_efidebug() - display and configure UEFI environment
1245 * @cmdtp: Command table
1246 * @flag: Command flag
1247 * @argc: Number of arguments
1248 * @argv: Argument array
1249 * Return: CMD_RET_SUCCESS on success,
1250 * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1252 * Implement efidebug command which allows us to display and
1253 * configure UEFI environment.
1255 static int do_efidebug(struct cmd_tbl
*cmdtp
, int flag
,
1256 int argc
, char *const argv
[])
1262 return CMD_RET_USAGE
;
1266 /* Initialize UEFI drivers */
1267 r
= efi_init_obj_list();
1268 if (r
!= EFI_SUCCESS
) {
1269 printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
1270 r
& ~EFI_ERROR_MASK
);
1271 return CMD_RET_FAILURE
;
1274 cp
= find_cmd_tbl(argv
[0], cmd_efidebug_sub
,
1275 ARRAY_SIZE(cmd_efidebug_sub
));
1277 return CMD_RET_USAGE
;
1279 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
1282 #ifdef CONFIG_SYS_LONGHELP
1283 static char efidebug_help_text
[] =
1284 " - UEFI Shell-like interface to configure UEFI environment\n"
1286 "efidebug boot add <bootid> <label> <interface> <devnum>[:<part>] <file path> [<load options>]\n"
1287 " - set UEFI BootXXXX variable\n"
1288 " <load options> will be passed to UEFI application\n"
1289 "efidebug boot rm <bootid#1> [<bootid#2> [<bootid#3> [...]]]\n"
1290 " - delete UEFI BootXXXX variables\n"
1291 "efidebug boot dump\n"
1292 " - dump all UEFI BootXXXX variables\n"
1293 "efidebug boot next <bootid>\n"
1294 " - set UEFI BootNext variable\n"
1295 "efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n"
1296 " - set/show UEFI boot order\n"
1298 "efidebug devices\n"
1299 " - show UEFI devices\n"
1300 "efidebug drivers\n"
1301 " - show UEFI drivers\n"
1303 " - show UEFI handles\n"
1305 " - show loaded images\n"
1307 " - show UEFI memory map\n"
1309 " - show UEFI configuration tables\n"
1310 "efidebug test bootmgr\n"
1311 " - run simple bootmgr for test\n"
1312 "efidebug query [-nv][-bs][-rt][-at]\n"
1313 " - show size of UEFI variables store\n";
1317 efidebug
, 10, 0, do_efidebug
,
1318 "Configure UEFI environment",