Merge tag 'u-boot-imx-20200825' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx
[platform/kernel/u-boot.git] / cmd / bootefi.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  *  EFI application loader
4  *
5  *  Copyright (c) 2016 Alexander Graf
6  */
7
8 #define LOG_CATEGORY LOGC_EFI
9
10 #include <common.h>
11 #include <charset.h>
12 #include <command.h>
13 #include <dm.h>
14 #include <efi_loader.h>
15 #include <efi_selftest.h>
16 #include <env.h>
17 #include <errno.h>
18 #include <image.h>
19 #include <log.h>
20 #include <malloc.h>
21 #include <linux/libfdt.h>
22 #include <linux/libfdt_env.h>
23 #include <mapmem.h>
24 #include <memalign.h>
25 #include <asm-generic/sections.h>
26 #include <linux/linkage.h>
27
28 DECLARE_GLOBAL_DATA_PTR;
29
30 static struct efi_device_path *bootefi_image_path;
31 static struct efi_device_path *bootefi_device_path;
32
33 /**
34  * efi_env_set_load_options() - set load options from environment variable
35  *
36  * @handle:             the image handle
37  * @env_var:            name of the environment variable
38  * @load_options:       pointer to load options (output)
39  * Return:              status code
40  */
41 static efi_status_t efi_env_set_load_options(efi_handle_t handle,
42                                              const char *env_var,
43                                              u16 **load_options)
44 {
45         const char *env = env_get(env_var);
46         size_t size;
47         u16 *pos;
48         efi_status_t ret;
49
50         *load_options = NULL;
51         if (!env)
52                 return EFI_SUCCESS;
53         size = sizeof(u16) * (utf8_utf16_strlen(env) + 1);
54         pos = calloc(size, 1);
55         if (!pos)
56                 return EFI_OUT_OF_RESOURCES;
57         *load_options = pos;
58         utf8_utf16_strcpy(&pos, env);
59         ret = efi_set_load_options(handle, size, *load_options);
60         if (ret != EFI_SUCCESS) {
61                 free(*load_options);
62                 *load_options = NULL;
63         }
64         return ret;
65 }
66
67 #if !CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
68
69 /**
70  * copy_fdt() - Copy the device tree to a new location available to EFI
71  *
72  * The FDT is copied to a suitable location within the EFI memory map.
73  * Additional 12 KiB are added to the space in case the device tree needs to be
74  * expanded later with fdt_open_into().
75  *
76  * @fdtp:       On entry a pointer to the flattened device tree.
77  *              On exit a pointer to the copy of the flattened device tree.
78  *              FDT start
79  * Return:      status code
80  */
81 static efi_status_t copy_fdt(void **fdtp)
82 {
83         unsigned long fdt_ram_start = -1L, fdt_pages;
84         efi_status_t ret = 0;
85         void *fdt, *new_fdt;
86         u64 new_fdt_addr;
87         uint fdt_size;
88         int i;
89
90         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
91                 u64 ram_start = gd->bd->bi_dram[i].start;
92                 u64 ram_size = gd->bd->bi_dram[i].size;
93
94                 if (!ram_size)
95                         continue;
96
97                 if (ram_start < fdt_ram_start)
98                         fdt_ram_start = ram_start;
99         }
100
101         /*
102          * Give us at least 12 KiB of breathing room in case the device tree
103          * needs to be expanded later.
104          */
105         fdt = *fdtp;
106         fdt_pages = efi_size_in_pages(fdt_totalsize(fdt) + 0x3000);
107         fdt_size = fdt_pages << EFI_PAGE_SHIFT;
108
109         /*
110          * Safe fdt location is at 127 MiB.
111          * On the sandbox convert from the sandbox address space.
112          */
113         new_fdt_addr = (uintptr_t)map_sysmem(fdt_ram_start + 0x7f00000 +
114                                              fdt_size, 0);
115         ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
116                                  EFI_ACPI_RECLAIM_MEMORY, fdt_pages,
117                                  &new_fdt_addr);
118         if (ret != EFI_SUCCESS) {
119                 /* If we can't put it there, put it somewhere */
120                 new_fdt_addr = (ulong)memalign(EFI_PAGE_SIZE, fdt_size);
121                 ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
122                                          EFI_ACPI_RECLAIM_MEMORY, fdt_pages,
123                                          &new_fdt_addr);
124                 if (ret != EFI_SUCCESS) {
125                         log_err("ERROR: Failed to reserve space for FDT\n");
126                         goto done;
127                 }
128         }
129         new_fdt = (void *)(uintptr_t)new_fdt_addr;
130         memcpy(new_fdt, fdt, fdt_totalsize(fdt));
131         fdt_set_totalsize(new_fdt, fdt_size);
132
133         *fdtp = (void *)(uintptr_t)new_fdt_addr;
134 done:
135         return ret;
136 }
137
138 static void efi_reserve_memory(u64 addr, u64 size)
139 {
140         /* Convert from sandbox address space. */
141         addr = (uintptr_t)map_sysmem(addr, 0);
142         if (efi_add_memory_map(addr, size,
143                                EFI_RESERVED_MEMORY_TYPE) != EFI_SUCCESS)
144                 log_err("Reserved memory mapping failed addr %llx size %llx\n",
145                         addr, size);
146 }
147
148 /**
149  * efi_carve_out_dt_rsv() - Carve out DT reserved memory ranges
150  *
151  * The mem_rsv entries of the FDT are added to the memory map. Any failures are
152  * ignored because this is not critical and we would rather continue to try to
153  * boot.
154  *
155  * @fdt: Pointer to device tree
156  */
157 static void efi_carve_out_dt_rsv(void *fdt)
158 {
159         int nr_rsv, i;
160         u64 addr, size;
161         int nodeoffset, subnode;
162
163         nr_rsv = fdt_num_mem_rsv(fdt);
164
165         /* Look for an existing entry and add it to the efi mem map. */
166         for (i = 0; i < nr_rsv; i++) {
167                 if (fdt_get_mem_rsv(fdt, i, &addr, &size) != 0)
168                         continue;
169                 efi_reserve_memory(addr, size);
170         }
171
172         /* process reserved-memory */
173         nodeoffset = fdt_subnode_offset(fdt, 0, "reserved-memory");
174         if (nodeoffset >= 0) {
175                 subnode = fdt_first_subnode(fdt, nodeoffset);
176                 while (subnode >= 0) {
177                         fdt_addr_t fdt_addr;
178                         fdt_size_t fdt_size;
179
180                         /* check if this subnode has a reg property */
181                         fdt_addr = fdtdec_get_addr_size_auto_parent(
182                                                 fdt, nodeoffset, subnode,
183                                                 "reg", 0, &fdt_size, false);
184                         /*
185                          * The /reserved-memory node may have children with
186                          * a size instead of a reg property.
187                          */
188                         if (fdt_addr != FDT_ADDR_T_NONE &&
189                             fdtdec_get_is_enabled(fdt, subnode))
190                                 efi_reserve_memory(fdt_addr, fdt_size);
191                         subnode = fdt_next_subnode(fdt, subnode);
192                 }
193         }
194 }
195
196 /**
197  * get_config_table() - get configuration table
198  *
199  * @guid:       GUID of the configuration table
200  * Return:      pointer to configuration table or NULL
201  */
202 static void *get_config_table(const efi_guid_t *guid)
203 {
204         size_t i;
205
206         for (i = 0; i < systab.nr_tables; i++) {
207                 if (!guidcmp(guid, &systab.tables[i].guid))
208                         return systab.tables[i].table;
209         }
210         return NULL;
211 }
212
213 #endif /* !CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE) */
214
215 /**
216  * efi_install_fdt() - install device tree
217  *
218  * If fdt is not EFI_FDT_USE_INTERNAL, the device tree located at that memory
219  * address will will be installed as configuration table, otherwise the device
220  * tree located at the address indicated by environment variable fdt_addr or as
221  * fallback fdtcontroladdr will be used.
222  *
223  * On architectures using ACPI tables device trees shall not be installed as
224  * configuration table.
225  *
226  * @fdt:        address of device tree or EFI_FDT_USE_INTERNAL to use the
227  *              the hardware device tree as indicated by environment variable
228  *              fdt_addr or as fallback the internal device tree as indicated by
229  *              the environment variable fdtcontroladdr
230  * Return:      status code
231  */
232 efi_status_t efi_install_fdt(void *fdt)
233 {
234         /*
235          * The EBBR spec requires that we have either an FDT or an ACPI table
236          * but not both.
237          */
238 #if CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
239         if (fdt) {
240                 log_err("ERROR: can't have ACPI table and device tree.\n");
241                 return EFI_LOAD_ERROR;
242         }
243 #else
244         bootm_headers_t img = { 0 };
245         efi_status_t ret;
246
247         if (fdt == EFI_FDT_USE_INTERNAL) {
248                 const char *fdt_opt;
249                 uintptr_t fdt_addr;
250
251                 /* Look for device tree that is already installed */
252                 if (get_config_table(&efi_guid_fdt))
253                         return EFI_SUCCESS;
254                 /* Check if there is a hardware device tree */
255                 fdt_opt = env_get("fdt_addr");
256                 /* Use our own device tree as fallback */
257                 if (!fdt_opt) {
258                         fdt_opt = env_get("fdtcontroladdr");
259                         if (!fdt_opt) {
260                                 log_err("ERROR: need device tree\n");
261                                 return EFI_NOT_FOUND;
262                         }
263                 }
264                 fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
265                 if (!fdt_addr) {
266                         log_err("ERROR: invalid $fdt_addr or $fdtcontroladdr\n");
267                         return EFI_LOAD_ERROR;
268                 }
269                 fdt = map_sysmem(fdt_addr, 0);
270         }
271
272         /* Install device tree */
273         if (fdt_check_header(fdt)) {
274                 log_err("ERROR: invalid device tree\n");
275                 return EFI_LOAD_ERROR;
276         }
277
278         /* Prepare device tree for payload */
279         ret = copy_fdt(&fdt);
280         if (ret) {
281                 log_err("ERROR: out of memory\n");
282                 return EFI_OUT_OF_RESOURCES;
283         }
284
285         if (image_setup_libfdt(&img, fdt, 0, NULL)) {
286                 log_err("ERROR: failed to process device tree\n");
287                 return EFI_LOAD_ERROR;
288         }
289
290         /* Create memory reservations as indicated by the device tree */
291         efi_carve_out_dt_rsv(fdt);
292
293         /* Install device tree as UEFI table */
294         ret = efi_install_configuration_table(&efi_guid_fdt, fdt);
295         if (ret != EFI_SUCCESS) {
296                 log_err("ERROR: failed to install device tree\n");
297                 return ret;
298         }
299 #endif /* GENERATE_ACPI_TABLE */
300
301         return EFI_SUCCESS;
302 }
303
304 /**
305  * do_bootefi_exec() - execute EFI binary
306  *
307  * The image indicated by @handle is started. When it returns the allocated
308  * memory for the @load_options is freed.
309  *
310  * @handle:             handle of loaded image
311  * @load_options:       load options
312  * Return:              status code
313  *
314  * Load the EFI binary into a newly assigned memory unwinding the relocation
315  * information, install the loaded image protocol, and call the binary.
316  */
317 static efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options)
318 {
319         efi_status_t ret;
320         efi_uintn_t exit_data_size = 0;
321         u16 *exit_data = NULL;
322
323         /* Call our payload! */
324         ret = EFI_CALL(efi_start_image(handle, &exit_data_size, &exit_data));
325         if (ret != EFI_SUCCESS) {
326                 log_err("## Application failed, r = %lu\n",
327                         ret & ~EFI_ERROR_MASK);
328                 if (exit_data) {
329                         log_err("## %ls\n", exit_data);
330                         efi_free_pool(exit_data);
331                 }
332         }
333
334         efi_restore_gd();
335
336         free(load_options);
337
338         return ret;
339 }
340
341 /**
342  * do_efibootmgr() - execute EFI boot manager
343  *
344  * Return:      status code
345  */
346 static int do_efibootmgr(void)
347 {
348         efi_handle_t handle;
349         efi_status_t ret;
350         void *load_options;
351
352         ret = efi_bootmgr_load(&handle, &load_options);
353         if (ret != EFI_SUCCESS) {
354                 log_notice("EFI boot manager: Cannot load any image\n");
355                 return CMD_RET_FAILURE;
356         }
357
358         ret = do_bootefi_exec(handle, load_options);
359
360         if (ret != EFI_SUCCESS)
361                 return CMD_RET_FAILURE;
362
363         return CMD_RET_SUCCESS;
364 }
365
366 /**
367  * do_bootefi_image() - execute EFI binary
368  *
369  * Set up memory image for the binary to be loaded, prepare device path, and
370  * then call do_bootefi_exec() to execute it.
371  *
372  * @image_opt:  string of image start address
373  * Return:      status code
374  */
375 static int do_bootefi_image(const char *image_opt)
376 {
377         void *image_buf;
378         unsigned long addr, size;
379         const char *size_str;
380         efi_status_t ret;
381
382 #ifdef CONFIG_CMD_BOOTEFI_HELLO
383         if (!strcmp(image_opt, "hello")) {
384                 char *saddr;
385
386                 saddr = env_get("loadaddr");
387                 size = __efi_helloworld_end - __efi_helloworld_begin;
388
389                 if (saddr)
390                         addr = simple_strtoul(saddr, NULL, 16);
391                 else
392                         addr = CONFIG_SYS_LOAD_ADDR;
393
394                 image_buf = map_sysmem(addr, size);
395                 memcpy(image_buf, __efi_helloworld_begin, size);
396
397                 efi_free_pool(bootefi_device_path);
398                 efi_free_pool(bootefi_image_path);
399                 bootefi_device_path = NULL;
400                 bootefi_image_path = NULL;
401         } else
402 #endif
403         {
404                 size_str = env_get("filesize");
405                 if (size_str)
406                         size = simple_strtoul(size_str, NULL, 16);
407                 else
408                         size = 0;
409
410                 addr = simple_strtoul(image_opt, NULL, 16);
411                 /* Check that a numeric value was passed */
412                 if (!addr && *image_opt != '0')
413                         return CMD_RET_USAGE;
414
415                 image_buf = map_sysmem(addr, size);
416         }
417         ret = efi_run_image(image_buf, size);
418
419         if (ret != EFI_SUCCESS)
420                 return CMD_RET_FAILURE;
421
422         return CMD_RET_SUCCESS;
423 }
424
425 /**
426  * efi_run_image() - run loaded UEFI image
427  *
428  * @source_buffer:      memory address of the UEFI image
429  * @source_size:        size of the UEFI image
430  * Return:              status code
431  */
432 efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size)
433 {
434         efi_handle_t mem_handle = NULL, handle;
435         struct efi_device_path *file_path = NULL;
436         efi_status_t ret;
437
438         if (!bootefi_device_path || !bootefi_image_path) {
439                 /*
440                  * Special case for efi payload not loaded from disk,
441                  * such as 'bootefi hello' or for example payload
442                  * loaded directly into memory via JTAG, etc:
443                  */
444                 file_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
445                                             (uintptr_t)source_buffer,
446                                             source_size);
447                 /*
448                  * Make sure that device for device_path exist
449                  * in load_image(). Otherwise, shell and grub will fail.
450                  */
451                 ret = efi_create_handle(&mem_handle);
452                 if (ret != EFI_SUCCESS)
453                         goto out;
454
455                 ret = efi_add_protocol(mem_handle, &efi_guid_device_path,
456                                        file_path);
457                 if (ret != EFI_SUCCESS)
458                         goto out;
459         } else {
460                 file_path = efi_dp_append(bootefi_device_path,
461                                           bootefi_image_path);
462         }
463
464         ret = EFI_CALL(efi_load_image(false, efi_root, file_path, source_buffer,
465                                       source_size, &handle));
466         if (ret != EFI_SUCCESS)
467                 goto out;
468
469         u16 *load_options;
470
471         /* Transfer environment variable as load options */
472         ret = efi_env_set_load_options(handle, "bootargs", &load_options);
473         if (ret != EFI_SUCCESS)
474                 goto out;
475
476         ret = do_bootefi_exec(handle, load_options);
477
478 out:
479         efi_delete_handle(mem_handle);
480         efi_free_pool(file_path);
481         return ret;
482 }
483
484 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
485 static efi_status_t bootefi_run_prepare(const char *load_options_path,
486                 struct efi_device_path *device_path,
487                 struct efi_device_path *image_path,
488                 struct efi_loaded_image_obj **image_objp,
489                 struct efi_loaded_image **loaded_image_infop)
490 {
491         efi_status_t ret;
492         u16 *load_options;
493
494         ret = efi_setup_loaded_image(device_path, image_path, image_objp,
495                                      loaded_image_infop);
496         if (ret != EFI_SUCCESS)
497                 return ret;
498
499         /* Transfer environment variable as load options */
500         return efi_env_set_load_options((efi_handle_t)*image_objp,
501                                         load_options_path,
502                                         &load_options);
503 }
504
505 /**
506  * bootefi_test_prepare() - prepare to run an EFI test
507  *
508  * Prepare to run a test as if it were provided by a loaded image.
509  *
510  * @image_objp:         pointer to be set to the loaded image handle
511  * @loaded_image_infop: pointer to be set to the loaded image protocol
512  * @path:               dummy file path used to construct the device path
513  *                      set in the loaded image protocol
514  * @load_options_path:  name of a U-Boot environment variable. Its value is
515  *                      set as load options in the loaded image protocol.
516  * Return:              status code
517  */
518 static efi_status_t bootefi_test_prepare
519                 (struct efi_loaded_image_obj **image_objp,
520                  struct efi_loaded_image **loaded_image_infop, const char *path,
521                  const char *load_options_path)
522 {
523         efi_status_t ret;
524
525         /* Construct a dummy device path */
526         bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, 0, 0);
527         if (!bootefi_device_path)
528                 return EFI_OUT_OF_RESOURCES;
529
530         bootefi_image_path = efi_dp_from_file(NULL, 0, path);
531         if (!bootefi_image_path) {
532                 ret = EFI_OUT_OF_RESOURCES;
533                 goto failure;
534         }
535
536         ret = bootefi_run_prepare(load_options_path, bootefi_device_path,
537                                   bootefi_image_path, image_objp,
538                                   loaded_image_infop);
539         if (ret == EFI_SUCCESS)
540                 return ret;
541
542         efi_free_pool(bootefi_image_path);
543         bootefi_image_path = NULL;
544 failure:
545         efi_free_pool(bootefi_device_path);
546         bootefi_device_path = NULL;
547         return ret;
548 }
549
550 /**
551  * bootefi_run_finish() - finish up after running an EFI test
552  *
553  * @loaded_image_info: Pointer to a struct which holds the loaded image info
554  * @image_obj: Pointer to a struct which holds the loaded image object
555  */
556 static void bootefi_run_finish(struct efi_loaded_image_obj *image_obj,
557                                struct efi_loaded_image *loaded_image_info)
558 {
559         efi_restore_gd();
560         free(loaded_image_info->load_options);
561         efi_delete_handle(&image_obj->header);
562 }
563
564 /**
565  * do_efi_selftest() - execute EFI selftest
566  *
567  * Return:      status code
568  */
569 static int do_efi_selftest(void)
570 {
571         struct efi_loaded_image_obj *image_obj;
572         struct efi_loaded_image *loaded_image_info;
573         efi_status_t ret;
574
575         ret = bootefi_test_prepare(&image_obj, &loaded_image_info,
576                                    "\\selftest", "efi_selftest");
577         if (ret != EFI_SUCCESS)
578                 return CMD_RET_FAILURE;
579
580         /* Execute the test */
581         ret = EFI_CALL(efi_selftest(&image_obj->header, &systab));
582         bootefi_run_finish(image_obj, loaded_image_info);
583
584         return ret != EFI_SUCCESS;
585 }
586 #endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
587
588 /**
589  * do_bootefi() - execute `bootefi` command
590  *
591  * @cmdtp:      table entry describing command
592  * @flag:       bitmap indicating how the command was invoked
593  * @argc:       number of arguments
594  * @argv:       command line arguments
595  * Return:      status code
596  */
597 static int do_bootefi(struct cmd_tbl *cmdtp, int flag, int argc,
598                       char *const argv[])
599 {
600         efi_status_t ret;
601         void *fdt;
602
603         if (argc < 2)
604                 return CMD_RET_USAGE;
605
606         /* Initialize EFI drivers */
607         ret = efi_init_obj_list();
608         if (ret != EFI_SUCCESS) {
609                 log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n",
610                         ret & ~EFI_ERROR_MASK);
611                 return CMD_RET_FAILURE;
612         }
613
614         if (argc > 2) {
615                 uintptr_t fdt_addr;
616
617                 fdt_addr = simple_strtoul(argv[2], NULL, 16);
618                 fdt = map_sysmem(fdt_addr, 0);
619         } else {
620                 fdt = EFI_FDT_USE_INTERNAL;
621         }
622         ret = efi_install_fdt(fdt);
623         if (ret == EFI_INVALID_PARAMETER)
624                 return CMD_RET_USAGE;
625         else if (ret != EFI_SUCCESS)
626                 return CMD_RET_FAILURE;
627
628         if (!strcmp(argv[1], "bootmgr"))
629                 return do_efibootmgr();
630 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
631         else if (!strcmp(argv[1], "selftest"))
632                 return do_efi_selftest();
633 #endif
634
635         return do_bootefi_image(argv[1]);
636 }
637
638 #ifdef CONFIG_SYS_LONGHELP
639 static char bootefi_help_text[] =
640         "<image address> [fdt address]\n"
641         "  - boot EFI payload stored at address <image address>.\n"
642         "    If specified, the device tree located at <fdt address> gets\n"
643         "    exposed as EFI configuration table.\n"
644 #ifdef CONFIG_CMD_BOOTEFI_HELLO
645         "bootefi hello\n"
646         "  - boot a sample Hello World application stored within U-Boot\n"
647 #endif
648 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
649         "bootefi selftest [fdt address]\n"
650         "  - boot an EFI selftest application stored within U-Boot\n"
651         "    Use environment variable efi_selftest to select a single test.\n"
652         "    Use 'setenv efi_selftest list' to enumerate all tests.\n"
653 #endif
654         "bootefi bootmgr [fdt address]\n"
655         "  - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
656         "\n"
657         "    If specified, the device tree located at <fdt address> gets\n"
658         "    exposed as EFI configuration table.\n";
659 #endif
660
661 U_BOOT_CMD(
662         bootefi, 3, 0, do_bootefi,
663         "Boots an EFI payload from memory",
664         bootefi_help_text
665 );
666
667 /**
668  * efi_set_bootdev() - set boot device
669  *
670  * This function is called when a file is loaded, e.g. via the 'load' command.
671  * We use the path to this file to inform the UEFI binary about the boot device.
672  *
673  * @dev:        device, e.g. "MMC"
674  * @devnr:      number of the device, e.g. "1:2"
675  * @path:       path to file loaded
676  */
677 void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
678 {
679         struct efi_device_path *device, *image;
680         efi_status_t ret;
681
682         /* efi_set_bootdev is typically called repeatedly, recover memory */
683         efi_free_pool(bootefi_device_path);
684         efi_free_pool(bootefi_image_path);
685
686         ret = efi_dp_from_name(dev, devnr, path, &device, &image);
687         if (ret == EFI_SUCCESS) {
688                 bootefi_device_path = device;
689                 if (image) {
690                         /* FIXME: image should not contain device */
691                         struct efi_device_path *image_tmp = image;
692
693                         efi_dp_split_file_path(image, &device, &image);
694                         efi_free_pool(image_tmp);
695                 }
696                 bootefi_image_path = image;
697         } else {
698                 bootefi_device_path = NULL;
699                 bootefi_image_path = NULL;
700         }
701 }