blob: 47948d369d950b6b131d92aeb9e8e091ad35322a [file] [log] [blame]
Lukasz Majewskicb383cd2012-08-06 14:41:08 +02001/*
2 * dfu.c -- DFU back-end routines
3 *
4 * Copyright (C) 2012 Samsung Electronics
5 * author: Lukasz Majewski <l.majewski@samsung.com>
6 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02007 * SPDX-License-Identifier: GPL-2.0+
Lukasz Majewskicb383cd2012-08-06 14:41:08 +02008 */
9
10#include <common.h>
11#include <malloc.h>
Pantelis Antoniou1b6ca182012-11-30 08:01:11 +000012#include <errno.h>
Pantelis Antoniouea2453d2013-03-14 05:32:48 +000013#include <div64.h>
Lukasz Majewskicb383cd2012-08-06 14:41:08 +020014#include <dfu.h>
Stephen Warren0e285b52014-06-11 12:47:27 -060015#include <ext4fs.h>
16#include <fat.h>
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010017#include <mmc.h>
Lukasz Majewskicb383cd2012-08-06 14:41:08 +020018
Przemyslaw Marczak41ac2332015-03-04 14:01:23 +010019static unsigned char *dfu_file_buf;
Patrick Delaunay15970d82017-07-19 16:39:23 +020020static u64 dfu_file_buf_len;
Stephen Warren411c5e52015-09-04 22:03:47 -060021static long dfu_file_buf_filled;
Pantelis Antoniouea2453d2013-03-14 05:32:48 +000022
Afzal Mohammed5a127c82013-09-18 01:14:50 +053023static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
Pantelis Antoniouea2453d2013-03-14 05:32:48 +000024 u64 offset, void *buf, long *len)
Lukasz Majewskicb383cd2012-08-06 14:41:08 +020025{
Przemyslaw Marczak7da6fa22014-12-15 10:34:09 +010026 struct mmc *mmc;
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010027 u32 blk_start, blk_count, n = 0;
Lukasz Majewskic8151b42014-05-09 16:58:15 +020028 int ret, part_num_bkp = 0;
Lukasz Majewskicb383cd2012-08-06 14:41:08 +020029
Przemyslaw Marczak7da6fa22014-12-15 10:34:09 +010030 mmc = find_mmc_device(dfu->data.mmc.dev_num);
31 if (!mmc) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +090032 pr_err("Device MMC %d - not found!", dfu->data.mmc.dev_num);
Przemyslaw Marczak7da6fa22014-12-15 10:34:09 +010033 return -ENODEV;
34 }
35
Pantelis Antoniouea2453d2013-03-14 05:32:48 +000036 /*
37 * We must ensure that we work in lba_blk_size chunks, so ALIGN
38 * this value.
39 */
40 *len = ALIGN(*len, dfu->data.mmc.lba_blk_size);
41
42 blk_start = dfu->data.mmc.lba_start +
43 (u32)lldiv(offset, dfu->data.mmc.lba_blk_size);
44 blk_count = *len / dfu->data.mmc.lba_blk_size;
45 if (blk_start + blk_count >
46 dfu->data.mmc.lba_start + dfu->data.mmc.lba_size) {
47 puts("Request would exceed designated area!\n");
48 return -EINVAL;
49 }
50
Lukasz Majewskic8151b42014-05-09 16:58:15 +020051 if (dfu->data.mmc.hw_partition >= 0) {
Simon Glass797d1b92016-06-12 23:30:33 -060052 part_num_bkp = mmc_get_blk_desc(mmc)->hwpart;
Simon Glass69f45cd2016-05-01 13:52:29 -060053 ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
54 dfu->data.mmc.dev_num,
55 dfu->data.mmc.hw_partition);
Lukasz Majewskic8151b42014-05-09 16:58:15 +020056 if (ret)
57 return ret;
58 }
59
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010060 debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__,
Stephen Warrendd648272014-06-11 16:03:33 -060061 op == DFU_OP_READ ? "MMC READ" : "MMC WRITE",
62 dfu->data.mmc.dev_num, blk_start, blk_count, buf);
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010063 switch (op) {
64 case DFU_OP_READ:
Simon Glass797d1b92016-06-12 23:30:33 -060065 n = blk_dread(mmc_get_blk_desc(mmc), blk_start, blk_count, buf);
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010066 break;
67 case DFU_OP_WRITE:
Simon Glass797d1b92016-06-12 23:30:33 -060068 n = blk_dwrite(mmc_get_blk_desc(mmc), blk_start, blk_count,
69 buf);
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010070 break;
71 default:
Masahiro Yamada9b643e32017-09-16 14:10:41 +090072 pr_err("Operation not supported\n");
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010073 }
Lukasz Majewskicb383cd2012-08-06 14:41:08 +020074
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010075 if (n != blk_count) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +090076 pr_err("MMC operation failed");
Lukasz Majewskic8151b42014-05-09 16:58:15 +020077 if (dfu->data.mmc.hw_partition >= 0)
Simon Glass69f45cd2016-05-01 13:52:29 -060078 blk_select_hwpart_devnum(IF_TYPE_MMC,
79 dfu->data.mmc.dev_num,
80 part_num_bkp);
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010081 return -EIO;
82 }
83
Lukasz Majewskic8151b42014-05-09 16:58:15 +020084 if (dfu->data.mmc.hw_partition >= 0) {
Simon Glass69f45cd2016-05-01 13:52:29 -060085 ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
86 dfu->data.mmc.dev_num,
87 part_num_bkp);
Lukasz Majewskic8151b42014-05-09 16:58:15 +020088 if (ret)
89 return ret;
90 }
91
Łukasz Majewski7d0b6052014-02-21 08:23:00 +010092 return 0;
Lukasz Majewskicb383cd2012-08-06 14:41:08 +020093}
94
Pantelis Antoniouea2453d2013-03-14 05:32:48 +000095static int mmc_file_buffer(struct dfu_entity *dfu, void *buf, long *len)
Lukasz Majewskicb383cd2012-08-06 14:41:08 +020096{
Pantelis Antoniouea2453d2013-03-14 05:32:48 +000097 if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) {
98 dfu_file_buf_len = 0;
99 return -EINVAL;
100 }
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200101
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000102 /* Add to the current buffer. */
103 memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
104 dfu_file_buf_len += *len;
105
106 return 0;
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200107}
108
Afzal Mohammed5a127c82013-09-18 01:14:50 +0530109static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
Patrick Delaunay15970d82017-07-19 16:39:23 +0200110 void *buf, u64 *len)
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200111{
Stephen Warren0e285b52014-06-11 12:47:27 -0600112 const char *fsname, *opname;
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200113 char cmd_buf[DFU_CMD_BUF_SIZE];
114 char *str_env;
115 int ret;
116
Łukasz Majewski43e66272012-08-23 23:33:55 +0000117 switch (dfu->layout) {
118 case DFU_FS_FAT:
Stephen Warren0e285b52014-06-11 12:47:27 -0600119 fsname = "fat";
Łukasz Majewski43e66272012-08-23 23:33:55 +0000120 break;
121 case DFU_FS_EXT4:
Stephen Warren0e285b52014-06-11 12:47:27 -0600122 fsname = "ext4";
Łukasz Majewski43e66272012-08-23 23:33:55 +0000123 break;
124 default:
125 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
126 dfu_get_layout(dfu->layout));
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000127 return -1;
Łukasz Majewski43e66272012-08-23 23:33:55 +0000128 }
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200129
Stephen Warren0e285b52014-06-11 12:47:27 -0600130 switch (op) {
131 case DFU_OP_READ:
132 opname = "load";
133 break;
134 case DFU_OP_WRITE:
135 opname = "write";
136 break;
137 case DFU_OP_SIZE:
138 opname = "size";
139 break;
140 default:
141 return -1;
142 }
143
144 sprintf(cmd_buf, "%s%s mmc %d:%d", fsname, opname,
145 dfu->data.mmc.dev, dfu->data.mmc.part);
146
147 if (op != DFU_OP_SIZE)
Stephen Warrene621c7a2015-07-22 14:54:04 -0600148 sprintf(cmd_buf + strlen(cmd_buf), " %p", buf);
Stephen Warren0e285b52014-06-11 12:47:27 -0600149
150 sprintf(cmd_buf + strlen(cmd_buf), " %s", dfu->name);
151
Lukasz Majewski17eb1d82014-02-20 10:29:18 +0100152 if (op == DFU_OP_WRITE)
Patrick Delaunay15970d82017-07-19 16:39:23 +0200153 sprintf(cmd_buf + strlen(cmd_buf), " %llx", *len);
Lukasz Majewski17eb1d82014-02-20 10:29:18 +0100154
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200155 debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
156
157 ret = run_command(cmd_buf, 0);
158 if (ret) {
159 puts("dfu: Read error!\n");
160 return ret;
161 }
162
Stephen Warren0e285b52014-06-11 12:47:27 -0600163 if (op != DFU_OP_WRITE) {
Simon Glass00caae62017-08-03 12:22:12 -0600164 str_env = env_get("filesize");
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200165 if (str_env == NULL) {
166 puts("dfu: Wrong file size!\n");
167 return -1;
168 }
169 *len = simple_strtoul(str_env, NULL, 16);
170 }
171
172 return ret;
173}
174
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000175int dfu_write_medium_mmc(struct dfu_entity *dfu,
176 u64 offset, void *buf, long *len)
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200177{
178 int ret = -1;
179
180 switch (dfu->layout) {
181 case DFU_RAW_ADDR:
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000182 ret = mmc_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200183 break;
184 case DFU_FS_FAT:
Łukasz Majewski43e66272012-08-23 23:33:55 +0000185 case DFU_FS_EXT4:
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000186 ret = mmc_file_buffer(dfu, buf, len);
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200187 break;
188 default:
189 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
190 dfu_get_layout(dfu->layout));
191 }
192
193 return ret;
194}
195
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000196int dfu_flush_medium_mmc(struct dfu_entity *dfu)
197{
198 int ret = 0;
199
200 if (dfu->layout != DFU_RAW_ADDR) {
201 /* Do stuff here. */
Przemyslaw Marczak41ac2332015-03-04 14:01:23 +0100202 ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf,
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000203 &dfu_file_buf_len);
204
205 /* Now that we're done */
206 dfu_file_buf_len = 0;
207 }
208
209 return ret;
210}
211
Patrick Delaunay15970d82017-07-19 16:39:23 +0200212int dfu_get_medium_size_mmc(struct dfu_entity *dfu, u64 *size)
Stephen Warren0e285b52014-06-11 12:47:27 -0600213{
214 int ret;
Stephen Warren0e285b52014-06-11 12:47:27 -0600215
216 switch (dfu->layout) {
217 case DFU_RAW_ADDR:
Patrick Delaunay4de51202017-07-19 16:39:22 +0200218 *size = dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
219 return 0;
Stephen Warren0e285b52014-06-11 12:47:27 -0600220 case DFU_FS_FAT:
221 case DFU_FS_EXT4:
Stephen Warren411c5e52015-09-04 22:03:47 -0600222 dfu_file_buf_filled = -1;
Patrick Delaunay4de51202017-07-19 16:39:22 +0200223 ret = mmc_file_op(DFU_OP_SIZE, dfu, NULL, size);
Stephen Warren0e285b52014-06-11 12:47:27 -0600224 if (ret < 0)
225 return ret;
Patrick Delaunay4de51202017-07-19 16:39:22 +0200226 if (*size > CONFIG_SYS_DFU_MAX_FILE_SIZE)
Stephen Warren411c5e52015-09-04 22:03:47 -0600227 return -1;
Patrick Delaunay4de51202017-07-19 16:39:22 +0200228 return 0;
Stephen Warren0e285b52014-06-11 12:47:27 -0600229 default:
230 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
231 dfu_get_layout(dfu->layout));
232 return -1;
233 }
234}
235
Stephen Warren411c5e52015-09-04 22:03:47 -0600236static int mmc_file_unbuffer(struct dfu_entity *dfu, u64 offset, void *buf,
237 long *len)
238{
239 int ret;
Patrick Delaunay15970d82017-07-19 16:39:23 +0200240 u64 file_len;
Stephen Warren411c5e52015-09-04 22:03:47 -0600241
242 if (dfu_file_buf_filled == -1) {
243 ret = mmc_file_op(DFU_OP_READ, dfu, dfu_file_buf, &file_len);
244 if (ret < 0)
245 return ret;
246 dfu_file_buf_filled = file_len;
247 }
248 if (offset + *len > dfu_file_buf_filled)
249 return -EINVAL;
250
251 /* Add to the current buffer. */
252 memcpy(buf, dfu_file_buf + offset, *len);
253
254 return 0;
255}
256
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000257int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf,
258 long *len)
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200259{
260 int ret = -1;
261
262 switch (dfu->layout) {
263 case DFU_RAW_ADDR:
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000264 ret = mmc_block_op(DFU_OP_READ, dfu, offset, buf, len);
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200265 break;
266 case DFU_FS_FAT:
Łukasz Majewski43e66272012-08-23 23:33:55 +0000267 case DFU_FS_EXT4:
Stephen Warren411c5e52015-09-04 22:03:47 -0600268 ret = mmc_file_unbuffer(dfu, offset, buf, len);
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200269 break;
270 default:
271 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
272 dfu_get_layout(dfu->layout));
273 }
274
275 return ret;
276}
277
Przemyslaw Marczak41ac2332015-03-04 14:01:23 +0100278void dfu_free_entity_mmc(struct dfu_entity *dfu)
279{
280 if (dfu_file_buf) {
281 free(dfu_file_buf);
282 dfu_file_buf = NULL;
283 }
284}
285
Mateusz Zalega711b9312014-04-28 21:13:24 +0200286/*
287 * @param s Parameter string containing space-separated arguments:
288 * 1st:
289 * raw (raw read/write)
290 * fat (files)
291 * ext4 (^)
292 * part (partition image)
293 * 2nd and 3rd:
294 * lba_start and lba_size, for raw write
295 * mmc_dev and mmc_part, for filesystems and part
Lukasz Majewskic8151b42014-05-09 16:58:15 +0200296 * 4th (optional):
297 * mmcpart <num> (access to HW eMMC partitions)
Mateusz Zalega711b9312014-04-28 21:13:24 +0200298 */
Stephen Warrendd648272014-06-11 16:03:33 -0600299int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200300{
Mateusz Zalega711b9312014-04-28 21:13:24 +0200301 const char *entity_type;
302 size_t second_arg;
303 size_t third_arg;
304
Pantelis Antoniou1b6ca182012-11-30 08:01:11 +0000305 struct mmc *mmc;
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200306
Mateusz Zalega711b9312014-04-28 21:13:24 +0200307 const char *argv[3];
308 const char **parg = argv;
Pantelis Antoniou1b6ca182012-11-30 08:01:11 +0000309
Stephen Warrendd648272014-06-11 16:03:33 -0600310 dfu->data.mmc.dev_num = simple_strtoul(devstr, NULL, 10);
311
Mateusz Zalega711b9312014-04-28 21:13:24 +0200312 for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
313 *parg = strsep(&s, " ");
314 if (*parg == NULL) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900315 pr_err("Invalid number of arguments.\n");
Pantelis Antoniou1b6ca182012-11-30 08:01:11 +0000316 return -ENODEV;
317 }
Mateusz Zalega711b9312014-04-28 21:13:24 +0200318 }
Pantelis Antoniou1b6ca182012-11-30 08:01:11 +0000319
Mateusz Zalega711b9312014-04-28 21:13:24 +0200320 entity_type = argv[0];
Mateusz Zalegab7d42592014-04-28 21:13:25 +0200321 /*
322 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
323 * with default 10.
324 */
325 second_arg = simple_strtoul(argv[1], NULL, 0);
326 third_arg = simple_strtoul(argv[2], NULL, 0);
Pantelis Antoniou1b6ca182012-11-30 08:01:11 +0000327
Stephen Warrendd648272014-06-11 16:03:33 -0600328 mmc = find_mmc_device(dfu->data.mmc.dev_num);
Mateusz Zalega711b9312014-04-28 21:13:24 +0200329 if (mmc == NULL) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900330 pr_err("Couldn't find MMC device no. %d.\n",
Stephen Warrendd648272014-06-11 16:03:33 -0600331 dfu->data.mmc.dev_num);
Pantelis Antoniou1b6ca182012-11-30 08:01:11 +0000332 return -ENODEV;
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200333 }
334
Mateusz Zalega711b9312014-04-28 21:13:24 +0200335 if (mmc_init(mmc)) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900336 pr_err("Couldn't init MMC device.\n");
Mateusz Zalega711b9312014-04-28 21:13:24 +0200337 return -ENODEV;
Łukasz Majewski43e66272012-08-23 23:33:55 +0000338 }
339
Lukasz Majewskic8151b42014-05-09 16:58:15 +0200340 dfu->data.mmc.hw_partition = -EINVAL;
Mateusz Zalega711b9312014-04-28 21:13:24 +0200341 if (!strcmp(entity_type, "raw")) {
342 dfu->layout = DFU_RAW_ADDR;
343 dfu->data.mmc.lba_start = second_arg;
344 dfu->data.mmc.lba_size = third_arg;
345 dfu->data.mmc.lba_blk_size = mmc->read_bl_len;
Lukasz Majewskic8151b42014-05-09 16:58:15 +0200346
347 /*
348 * Check for an extra entry at dfu_alt_info env variable
349 * specifying the mmc HW defined partition number
350 */
351 if (s)
352 if (!strcmp(strsep(&s, " "), "mmcpart"))
353 dfu->data.mmc.hw_partition =
354 simple_strtoul(s, NULL, 0);
355
Mateusz Zalega711b9312014-04-28 21:13:24 +0200356 } else if (!strcmp(entity_type, "part")) {
357 disk_partition_t partinfo;
Simon Glass797d1b92016-06-12 23:30:33 -0600358 struct blk_desc *blk_dev = mmc_get_blk_desc(mmc);
Mateusz Zalega711b9312014-04-28 21:13:24 +0200359 int mmcdev = second_arg;
360 int mmcpart = third_arg;
361
Simon Glass3e8bd462016-02-29 15:25:48 -0700362 if (part_get_info(blk_dev, mmcpart, &partinfo) != 0) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900363 pr_err("Couldn't find part #%d on mmc device #%d\n",
Mateusz Zalega711b9312014-04-28 21:13:24 +0200364 mmcpart, mmcdev);
365 return -ENODEV;
366 }
367
368 dfu->layout = DFU_RAW_ADDR;
369 dfu->data.mmc.lba_start = partinfo.start;
370 dfu->data.mmc.lba_size = partinfo.size;
371 dfu->data.mmc.lba_blk_size = partinfo.blksz;
372 } else if (!strcmp(entity_type, "fat")) {
373 dfu->layout = DFU_FS_FAT;
374 } else if (!strcmp(entity_type, "ext4")) {
375 dfu->layout = DFU_FS_EXT4;
376 } else {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900377 pr_err("Memory layout (%s) not supported!\n", entity_type);
Mateusz Zalega711b9312014-04-28 21:13:24 +0200378 return -ENODEV;
379 }
380
381 /* if it's NOT a raw write */
382 if (strcmp(entity_type, "raw")) {
383 dfu->data.mmc.dev = second_arg;
384 dfu->data.mmc.part = third_arg;
385 }
386
387 dfu->dev_type = DFU_DEV_MMC;
Stephen Warren0e285b52014-06-11 12:47:27 -0600388 dfu->get_medium_size = dfu_get_medium_size_mmc;
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200389 dfu->read_medium = dfu_read_medium_mmc;
390 dfu->write_medium = dfu_write_medium_mmc;
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000391 dfu->flush_medium = dfu_flush_medium_mmc;
Pantelis Antoniouea2453d2013-03-14 05:32:48 +0000392 dfu->inited = 0;
Przemyslaw Marczak41ac2332015-03-04 14:01:23 +0100393 dfu->free_entity = dfu_free_entity_mmc;
394
395 /* Check if file buffer is ready */
396 if (!dfu_file_buf) {
397 dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE,
398 CONFIG_SYS_DFU_MAX_FILE_SIZE);
399 if (!dfu_file_buf) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900400 pr_err("Could not memalign 0x%x bytes",
Przemyslaw Marczak41ac2332015-03-04 14:01:23 +0100401 CONFIG_SYS_DFU_MAX_FILE_SIZE);
402 return -ENOMEM;
403 }
404 }
Lukasz Majewskicb383cd2012-08-06 14:41:08 +0200405
406 return 0;
407}