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AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Integrate UEFI variables to u-boot env interface
4 *
5 * Copyright (c) 2018 AKASHI Takahiro, Linaro Limited
6 */
7
8#include <charset.h>
9#include <common.h>
10#include <command.h>
11#include <efi_loader.h>
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020012#include <efi_variable.h>
Simon Glass9fb625c2019-08-01 09:46:51 -060013#include <env.h>
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090014#include <exports.h>
15#include <hexdump.h>
16#include <malloc.h>
AKASHI Takahiro051aa892019-10-24 15:17:13 +090017#include <mapmem.h>
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020018#include <rtc.h>
Simon Glassba06b3c2020-05-10 11:39:52 -060019#include <uuid.h>
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090020#include <linux/kernel.h>
21
22/*
23 * From efi_variable.c,
24 *
25 * Mapping between UEFI variables and u-boot variables:
26 *
27 * efi_$guid_$varname = {attributes}(type)value
28 */
29
30static const struct {
31 u32 mask;
32 char *text;
33} efi_var_attrs[] = {
34 {EFI_VARIABLE_NON_VOLATILE, "NV"},
35 {EFI_VARIABLE_BOOTSERVICE_ACCESS, "BS"},
36 {EFI_VARIABLE_RUNTIME_ACCESS, "RT"},
37 {EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS, "AW"},
38 {EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS, "AT"},
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020039 {EFI_VARIABLE_READ_ONLY, "RO"},
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090040};
41
42/**
43 * efi_dump_single_var() - show information about a UEFI variable
44 *
45 * @name: Name of the variable
46 * @guid: Vendor GUID
AKASHI Takahiro051aa892019-10-24 15:17:13 +090047 * @verbose: if true, dump data
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090048 *
49 * Show information encoded in one UEFI variable
50 */
AKASHI Takahiro051aa892019-10-24 15:17:13 +090051static void efi_dump_single_var(u16 *name, const efi_guid_t *guid, bool verbose)
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090052{
53 u32 attributes;
54 u8 *data;
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020055 u64 time;
56 struct rtc_time tm;
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090057 efi_uintn_t size;
58 int count, i;
59 efi_status_t ret;
60
61 data = NULL;
62 size = 0;
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020063 ret = efi_get_variable_int(name, guid, &attributes, &size, data, &time);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090064 if (ret == EFI_BUFFER_TOO_SMALL) {
65 data = malloc(size);
66 if (!data)
67 goto out;
68
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020069 ret = efi_get_variable_int(name, guid, &attributes, &size,
70 data, &time);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090071 }
72 if (ret == EFI_NOT_FOUND) {
73 printf("Error: \"%ls\" not defined\n", name);
74 goto out;
75 }
76 if (ret != EFI_SUCCESS)
77 goto out;
78
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020079 rtc_to_tm(time, &tm);
Heinrich Schuchardt983a5a22022-01-16 14:53:37 +010080 printf("%ls:\n %pUl (%pUs)\n", name, guid, guid);
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +020081 if (attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)
82 printf(" %04d-%02d-%02d %02d:%02d:%02d\n", tm.tm_year,
83 tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
84 printf(" ");
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090085 for (count = 0, i = 0; i < ARRAY_SIZE(efi_var_attrs); i++)
86 if (attributes & efi_var_attrs[i].mask) {
87 if (count)
88 putc('|');
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090089 count++;
90 puts(efi_var_attrs[i].text);
91 }
92 printf(", DataSize = 0x%zx\n", size);
AKASHI Takahiro051aa892019-10-24 15:17:13 +090093 if (verbose)
94 print_hex_dump(" ", DUMP_PREFIX_OFFSET, 16, 1,
95 data, size, true);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090096
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +090097out:
98 free(data);
99}
100
Simon Glass09140112020-05-10 11:40:03 -0600101static bool match_name(int argc, char *const argv[], u16 *var_name16)
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900102{
103 char *buf, *p;
104 size_t buflen;
105 int i;
106 bool result = false;
107
108 buflen = utf16_utf8_strlen(var_name16) + 1;
109 buf = calloc(1, buflen);
110 if (!buf)
111 return result;
112
113 p = buf;
114 utf16_utf8_strcpy(&p, var_name16);
115
116 for (i = 0; i < argc; argc--, argv++) {
117 if (!strcmp(buf, argv[i])) {
118 result = true;
119 goto out;
120 }
121 }
122
123out:
124 free(buf);
125
126 return result;
127}
128
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900129/**
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900130 * efi_dump_var_all() - show information about all the UEFI variables
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900131 *
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900132 * @argc: Number of arguments (variables)
133 * @argv: Argument (variable name) array
134 * @verbose: if true, dump data
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900135 * Return: CMD_RET_SUCCESS on success, or CMD_RET_RET_FAILURE
136 *
137 * Show information encoded in all the UEFI variables
138 */
Simon Glass09140112020-05-10 11:40:03 -0600139static int efi_dump_var_all(int argc, char *const argv[],
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900140 const efi_guid_t *guid_p, bool verbose)
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900141{
142 u16 *var_name16, *p;
143 efi_uintn_t buf_size, size;
144 efi_guid_t guid;
145 efi_status_t ret;
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200146 bool match = false;
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900147
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900148 buf_size = 128;
149 var_name16 = malloc(buf_size);
150 if (!var_name16)
151 return CMD_RET_FAILURE;
152
153 var_name16[0] = 0;
154 for (;;) {
155 size = buf_size;
Heinrich Schuchardtf4c1a142021-09-09 07:39:40 +0200156 ret = efi_get_next_variable_name_int(&size, var_name16,
157 &guid);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900158 if (ret == EFI_NOT_FOUND)
159 break;
160 if (ret == EFI_BUFFER_TOO_SMALL) {
161 buf_size = size;
162 p = realloc(var_name16, buf_size);
163 if (!p) {
164 free(var_name16);
165 return CMD_RET_FAILURE;
166 }
167 var_name16 = p;
Heinrich Schuchardtf4c1a142021-09-09 07:39:40 +0200168 ret = efi_get_next_variable_name_int(&size, var_name16,
169 &guid);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900170 }
171 if (ret != EFI_SUCCESS) {
172 free(var_name16);
173 return CMD_RET_FAILURE;
174 }
175
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200176 if (guid_p && guidcmp(guid_p, &guid))
177 continue;
178 if (!argc || match_name(argc, argv, var_name16)) {
179 match = true;
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900180 efi_dump_single_var(var_name16, &guid, verbose);
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200181 }
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900182 }
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900183 free(var_name16);
184
Heinrich Schuchardta872b182022-06-19 13:36:48 +0200185 if (!match && argc == 1) {
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200186 printf("Error: \"%s\" not defined\n", argv[0]);
Heinrich Schuchardta872b182022-06-19 13:36:48 +0200187 return CMD_RET_FAILURE;
188 }
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200189
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900190 return CMD_RET_SUCCESS;
191}
192
193/**
194 * do_env_print_efi() - show information about UEFI variables
195 *
196 * @cmdtp: Command table
197 * @flag: Command flag
198 * @argc: Number of arguments
199 * @argv: Argument array
200 * Return: CMD_RET_SUCCESS on success, or CMD_RET_RET_FAILURE
201 *
202 * This function is for "env print -e" or "printenv -e" command:
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900203 * => env print -e [-n] [-guid <guid> | -all] [var [...]]
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900204 * If one or more variable names are specified, show information
205 * named UEFI variables, otherwise show all the UEFI variables.
206 */
Simon Glass09140112020-05-10 11:40:03 -0600207int do_env_print_efi(struct cmd_tbl *cmdtp, int flag, int argc,
208 char *const argv[])
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900209{
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200210 const efi_guid_t *guid_p = NULL;
AKASHI Takahirof1eb3462021-07-03 15:43:17 +0900211 efi_guid_t guid;
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200212 bool verbose = true;
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900213 efi_status_t ret;
214
215 /* Initialize EFI drivers */
216 ret = efi_init_obj_list();
217 if (ret != EFI_SUCCESS) {
218 printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
219 ret & ~EFI_ERROR_MASK);
220 return CMD_RET_FAILURE;
221 }
222
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900223 for (argc--, argv++; argc > 0 && argv[0][0] == '-'; argc--, argv++) {
224 if (!strcmp(argv[0], "-guid")) {
225 if (argc == 1)
226 return CMD_RET_USAGE;
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900227 argc--;
228 argv++;
229 if (uuid_str_to_bin(argv[0], guid.b,
230 UUID_STR_FORMAT_GUID))
231 return CMD_RET_USAGE;
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200232 guid_p = (const efi_guid_t *)guid.b;
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900233 } else if (!strcmp(argv[0], "-n")) {
234 verbose = false;
235 } else {
236 return CMD_RET_USAGE;
237 }
238 }
239
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900240 /* enumerate and show all UEFI variables */
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900241 return efi_dump_var_all(argc, argv, guid_p, verbose);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900242}
243
244/**
245 * append_value() - encode UEFI variable's value
246 * @bufp: Buffer of encoded UEFI variable's value
247 * @sizep: Size of buffer
248 * @data: data to be encoded into the value
249 * Return: 0 on success, -1 otherwise
250 *
251 * Interpret a given data string and append it to buffer.
252 * Buffer will be realloc'ed if necessary.
253 *
254 * Currently supported formats are:
255 * =0x0123...: Hexadecimal number
256 * =H0123...: Hexadecimal-byte array
257 * ="...", =S"..." or <string>:
258 * String
259 */
260static int append_value(char **bufp, size_t *sizep, char *data)
261{
262 char *tmp_buf = NULL, *new_buf = NULL, *value;
263 unsigned long len = 0;
264
Dan Carpenter0c0d4712023-07-31 17:03:59 +0300265 if (!strncmp(data, "=0x", 3)) { /* hexadecimal number */
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900266 union {
267 u8 u8;
268 u16 u16;
269 u32 u32;
270 u64 u64;
271 } tmp_data;
272 unsigned long hex_value;
273 void *hex_ptr;
274
275 data += 3;
276 len = strlen(data);
277 if ((len & 0x1)) /* not multiple of two */
278 return -1;
279
280 len /= 2;
281 if (len > 8)
282 return -1;
283 else if (len > 4)
284 len = 8;
285 else if (len > 2)
286 len = 4;
287
288 /* convert hex hexadecimal number */
289 if (strict_strtoul(data, 16, &hex_value) < 0)
290 return -1;
291
292 tmp_buf = malloc(len);
293 if (!tmp_buf)
294 return -1;
295
296 if (len == 1) {
297 tmp_data.u8 = hex_value;
298 hex_ptr = &tmp_data.u8;
299 } else if (len == 2) {
300 tmp_data.u16 = hex_value;
301 hex_ptr = &tmp_data.u16;
302 } else if (len == 4) {
303 tmp_data.u32 = hex_value;
304 hex_ptr = &tmp_data.u32;
305 } else {
306 tmp_data.u64 = hex_value;
307 hex_ptr = &tmp_data.u64;
308 }
309 memcpy(tmp_buf, hex_ptr, len);
310 value = tmp_buf;
311
312 } else if (!strncmp(data, "=H", 2)) { /* hexadecimal-byte array */
313 data += 2;
314 len = strlen(data);
315 if (len & 0x1) /* not multiple of two */
316 return -1;
317
318 len /= 2;
319 tmp_buf = malloc(len);
320 if (!tmp_buf)
321 return -1;
322
Heinrich Schuchardt45203e02019-04-30 07:14:09 +0200323 if (hex2bin((u8 *)tmp_buf, data, len) < 0) {
324 printf("Error: illegal hexadecimal string\n");
325 free(tmp_buf);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900326 return -1;
Heinrich Schuchardt45203e02019-04-30 07:14:09 +0200327 }
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900328
329 value = tmp_buf;
330 } else { /* string */
331 if (!strncmp(data, "=\"", 2) || !strncmp(data, "=S\"", 3)) {
332 if (data[1] == '"')
333 data += 2;
334 else
335 data += 3;
336 value = data;
337 len = strlen(data) - 1;
338 if (data[len] != '"')
339 return -1;
340 } else {
341 value = data;
342 len = strlen(data);
343 }
344 }
345
346 new_buf = realloc(*bufp, *sizep + len);
347 if (!new_buf)
348 goto out;
349
350 memcpy(new_buf + *sizep, value, len);
351 *bufp = new_buf;
352 *sizep += len;
353
354out:
355 free(tmp_buf);
356
357 return 0;
358}
359
360/**
AKASHI Takahiro6810caf2019-10-04 13:46:25 +0900361 * do_env_set_efi() - set UEFI variable
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900362 *
363 * @cmdtp: Command table
364 * @flag: Command flag
365 * @argc: Number of arguments
366 * @argv: Argument array
367 * Return: CMD_RET_SUCCESS on success, or CMD_RET_RET_FAILURE
368 *
369 * This function is for "env set -e" or "setenv -e" command:
AKASHI Takahiroe50e2872020-04-14 11:51:47 +0900370 * => env set -e [-guid guid][-nv][-bs][-rt][-at][-a][-v]
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900371 * [-i address,size] var, or
372 * var [value ...]
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900373 * Encode values specified and set given UEFI variable.
374 * If no value is specified, delete the variable.
375 */
Simon Glass09140112020-05-10 11:40:03 -0600376int do_env_set_efi(struct cmd_tbl *cmdtp, int flag, int argc,
377 char *const argv[])
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900378{
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900379 char *var_name, *value, *ep;
380 ulong addr;
381 efi_uintn_t size;
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900382 efi_guid_t guid;
AKASHI Takahiro4b27a762019-06-04 15:52:11 +0900383 u32 attributes;
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900384 bool default_guid, verbose, value_on_memory;
Heinrich Schuchardt57b2d302022-10-06 06:52:51 +0200385 u16 *var_name16;
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900386 efi_status_t ret;
387
388 if (argc == 1)
389 return CMD_RET_USAGE;
390
391 /* Initialize EFI drivers */
392 ret = efi_init_obj_list();
393 if (ret != EFI_SUCCESS) {
394 printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
395 ret & ~EFI_ERROR_MASK);
396 return CMD_RET_FAILURE;
397 }
398
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900399 /*
400 * attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS |
401 * EFI_VARIABLE_RUNTIME_ACCESS;
402 */
403 value = NULL;
404 size = 0;
405 attributes = 0;
406 guid = efi_global_variable_guid;
407 default_guid = true;
408 verbose = false;
409 value_on_memory = false;
410 for (argc--, argv++; argc > 0 && argv[0][0] == '-'; argc--, argv++) {
411 if (!strcmp(argv[0], "-guid")) {
412 if (argc == 1)
413 return CMD_RET_USAGE;
414
415 argc--;
416 argv++;
417 if (uuid_str_to_bin(argv[0], guid.b,
418 UUID_STR_FORMAT_GUID)) {
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +0200419 return CMD_RET_USAGE;
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900420 }
421 default_guid = false;
422 } else if (!strcmp(argv[0], "-bs")) {
423 attributes |= EFI_VARIABLE_BOOTSERVICE_ACCESS;
424 } else if (!strcmp(argv[0], "-rt")) {
425 attributes |= EFI_VARIABLE_RUNTIME_ACCESS;
426 } else if (!strcmp(argv[0], "-nv")) {
427 attributes |= EFI_VARIABLE_NON_VOLATILE;
AKASHI Takahiroe50e2872020-04-14 11:51:47 +0900428 } else if (!strcmp(argv[0], "-at")) {
429 attributes |=
430 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900431 } else if (!strcmp(argv[0], "-a")) {
432 attributes |= EFI_VARIABLE_APPEND_WRITE;
433 } else if (!strcmp(argv[0], "-i")) {
434 /* data comes from memory */
435 if (argc == 1)
436 return CMD_RET_USAGE;
437
438 argc--;
439 argv++;
Simon Glass7e5f4602021-07-24 09:03:29 -0600440 addr = hextoul(argv[0], &ep);
Heinrich Schuchardt2b3fbcb2020-08-24 08:27:49 +0200441 if (*ep != ':')
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900442 return CMD_RET_USAGE;
443
AKASHI Takahirof757d042020-04-14 11:51:46 +0900444 /* 0 should be allowed for delete */
Simon Glass7e5f4602021-07-24 09:03:29 -0600445 size = hextoul(++ep, NULL);
AKASHI Takahirof757d042020-04-14 11:51:46 +0900446
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900447 value_on_memory = true;
448 } else if (!strcmp(argv[0], "-v")) {
449 verbose = true;
450 } else {
451 return CMD_RET_USAGE;
452 }
453 }
454 if (!argc)
455 return CMD_RET_USAGE;
456
457 var_name = argv[0];
AKASHI Takahirof757d042020-04-14 11:51:46 +0900458 if (default_guid) {
459 if (!strcmp(var_name, "db") || !strcmp(var_name, "dbx") ||
460 !strcmp(var_name, "dbt"))
461 guid = efi_guid_image_security_database;
462 else
463 guid = efi_global_variable_guid;
464 }
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900465
466 if (verbose) {
Heinrich Schuchardt983a5a22022-01-16 14:53:37 +0100467 printf("GUID: %pUl (%pUs)\n", &guid, &guid);
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900468 printf("Attributes: 0x%x\n", attributes);
AKASHI Takahiro4b27a762019-06-04 15:52:11 +0900469 }
470
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900471 /* for value */
472 if (value_on_memory)
473 value = map_sysmem(addr, 0);
474 else if (argc > 1)
475 for (argc--, argv++; argc > 0; argc--, argv++)
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900476 if (append_value(&value, &size, argv[0]) < 0) {
AKASHI Takahiro8190b4a2019-05-28 09:00:35 +0900477 printf("## Failed to process an argument, %s\n",
478 argv[0]);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900479 ret = CMD_RET_FAILURE;
480 goto out;
481 }
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900482
483 if (size && verbose) {
484 printf("Value:\n");
485 print_hex_dump(" ", DUMP_PREFIX_OFFSET,
486 16, 1, value, size, true);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900487 }
488
Heinrich Schuchardt57b2d302022-10-06 06:52:51 +0200489 var_name16 = efi_convert_string(var_name);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900490 if (!var_name16) {
AKASHI Takahiro8190b4a2019-05-28 09:00:35 +0900491 printf("## Out of memory\n");
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900492 ret = CMD_RET_FAILURE;
493 goto out;
494 }
Heinrich Schuchardt2a79c352020-06-24 19:55:13 +0200495 ret = efi_set_variable_int(var_name16, &guid, attributes, size, value,
496 true);
Heinrich Schuchardt57b2d302022-10-06 06:52:51 +0200497 free(var_name16);
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900498 unmap_sysmem(value);
AKASHI Takahiro8190b4a2019-05-28 09:00:35 +0900499 if (ret == EFI_SUCCESS) {
500 ret = CMD_RET_SUCCESS;
501 } else {
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900502 const char *msg;
503
504 switch (ret) {
505 case EFI_NOT_FOUND:
506 msg = " (not found)";
507 break;
508 case EFI_WRITE_PROTECTED:
509 msg = " (read only)";
510 break;
511 case EFI_INVALID_PARAMETER:
512 msg = " (invalid parameter)";
513 break;
514 case EFI_SECURITY_VIOLATION:
515 msg = " (validation failed)";
516 break;
517 case EFI_OUT_OF_RESOURCES:
518 msg = " (out of memory)";
519 break;
520 default:
521 msg = "";
522 break;
523 }
524 printf("## Failed to set EFI variable%s\n", msg);
AKASHI Takahiro8190b4a2019-05-28 09:00:35 +0900525 ret = CMD_RET_FAILURE;
526 }
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900527out:
AKASHI Takahiro051aa892019-10-24 15:17:13 +0900528 if (value_on_memory)
529 unmap_sysmem(value);
530 else
531 free(value);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900532
533 return ret;
534}