1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2023 Sean Anderson <seanga2@gmail.com>
*/
#include <blk.h>
#include <ext_common.h>
#include <ext4fs.h>
#include <fat.h>
#include <fs.h>
#include <memalign.h>
#include <spl.h>
#include <asm/io.h>
#include <linux/stat.h>
#include <test/spl.h>
#include <test/ut.h>
/**
* create_ext2() - Create an "ext2" filesystem with a single file
* @dst: The location of the new filesystem; MUST be zeroed
* @size: The size of the file
* @filename: The name of the file
* @data_offset: Filled with the offset of the file data from @dst
*
* Budget mke2fs. We use 1k blocks (to reduce overhead) with a single block
* group, which limits us to 8M of data. Almost every feature which increases
* complexity (checksums, hash tree directories, etc.) is disabled. We do cheat
* a little and use extents from ext4 to save having to deal with indirects, but
* U-Boot doesn't care.
*
* If @dst is %NULL, nothing is copied.
*
* Return: The size of the filesystem in bytes
*/
static size_t create_ext2(void *dst, size_t size, const char *filename,
size_t *data_offset)
{
u32 super_block = 1;
u32 group_block = 2;
u32 block_bitmap_block = 3;
u32 inode_bitmap_block = 4;
u32 inode_table_block = 5;
u32 root_block = 6;
u32 file_block = 7;
u32 root_ino = EXT2_ROOT_INO;
u32 file_ino = EXT2_BOOT_LOADER_INO;
u32 block_size = EXT2_MIN_BLOCK_SIZE;
u32 inode_size = sizeof(struct ext2_inode);
u32 file_blocks = (size + block_size - 1) / block_size;
u32 blocks = file_block + file_blocks;
u32 inodes = block_size / inode_size;
u32 filename_len = strlen(filename);
u32 dirent_len = ALIGN(filename_len, sizeof(struct ext2_dirent)) +
sizeof(struct ext2_dirent);
struct ext2_sblock *sblock = dst + super_block * block_size;
struct ext2_block_group *bg = dst + group_block * block_size;
struct ext2_inode *inode_table = dst + inode_table_block * block_size;
struct ext2_inode *root_inode = &inode_table[root_ino - 1];
struct ext2_inode *file_inode = &inode_table[file_ino - 1];
struct ext4_extent_header *ext_block = (void *)&file_inode->b;
struct ext4_extent *extent = (void *)(ext_block + 1);
struct ext2_dirent *dot = dst + root_block * block_size;
struct ext2_dirent *dotdot = dot + 2;
struct ext2_dirent *dirent = dotdot + 2;
struct ext2_dirent *last = ((void *)dirent) + dirent_len;
/* Make sure we fit in one block group */
if (blocks > block_size * 8)
return 0;
if (filename_len > EXT2_NAME_LEN)
return 0;
if (data_offset)
*data_offset = file_block * block_size;
if (!dst)
goto out;
sblock->total_inodes = cpu_to_le32(inodes);
sblock->total_blocks = cpu_to_le32(blocks);
sblock->first_data_block = cpu_to_le32(super_block);
sblock->blocks_per_group = cpu_to_le32(blocks);
sblock->fragments_per_group = cpu_to_le32(blocks);
sblock->inodes_per_group = cpu_to_le32(inodes);
sblock->magic = cpu_to_le16(EXT2_MAGIC);
/* Done mostly so we can pretend to be (in)compatible */
sblock->revision_level = cpu_to_le32(EXT2_DYNAMIC_REV);
/* Not really accurate but it doesn't matter */
sblock->first_inode = cpu_to_le32(EXT2_GOOD_OLD_FIRST_INO);
sblock->inode_size = cpu_to_le32(inode_size);
sblock->feature_incompat = cpu_to_le32(EXT4_FEATURE_INCOMPAT_EXTENTS);
bg->block_id = cpu_to_le32(block_bitmap_block);
bg->inode_id = cpu_to_le32(inode_bitmap_block);
bg->inode_table_id = cpu_to_le32(inode_table_block);
/*
* All blocks/inodes are in-use. I don't want to have to deal with
* endianness, so just fill everything in.
*/
memset(dst + block_bitmap_block * block_size, 0xff, block_size * 2);
root_inode->mode = cpu_to_le16(S_IFDIR | 0755);
root_inode->size = cpu_to_le32(block_size);
root_inode->nlinks = cpu_to_le16(3);
root_inode->blockcnt = cpu_to_le32(1);
root_inode->flags = cpu_to_le32(EXT4_TOPDIR_FL);
root_inode->b.blocks.dir_blocks[0] = root_block;
file_inode->mode = cpu_to_le16(S_IFREG | 0644);
file_inode->size = cpu_to_le32(size);
file_inode->nlinks = cpu_to_le16(1);
file_inode->blockcnt = cpu_to_le32(file_blocks);
file_inode->flags = cpu_to_le32(EXT4_EXTENTS_FL);
ext_block->eh_magic = cpu_to_le16(EXT4_EXT_MAGIC);
ext_block->eh_entries = cpu_to_le16(1);
ext_block->eh_max = cpu_to_le16(sizeof(file_inode->b) /
sizeof(*ext_block) - 1);
extent->ee_len = cpu_to_le16(file_blocks);
extent->ee_start_lo = cpu_to_le16(file_block);
/* I'm not sure we need these, but it can't hurt */
dot->inode = cpu_to_le32(root_ino);
dot->direntlen = cpu_to_le16(2 * sizeof(*dot));
dot->namelen = 1;
dot->filetype = FILETYPE_DIRECTORY;
memcpy(dot + 1, ".", dot->namelen);
dotdot->inode = cpu_to_le32(root_ino);
dotdot->direntlen = cpu_to_le16(2 * sizeof(*dotdot));
dotdot->namelen = 2;
dotdot->filetype = FILETYPE_DIRECTORY;
memcpy(dotdot + 1, "..", dotdot->namelen);
dirent->inode = cpu_to_le32(file_ino);
dirent->direntlen = cpu_to_le16(dirent_len);
dirent->namelen = filename_len;
dirent->filetype = FILETYPE_REG;
memcpy(dirent + 1, filename, filename_len);
last->direntlen = block_size - dirent_len;
out:
return (size_t)blocks * block_size;
}
/**
* create_fat() - Create a FAT32 filesystem with a single file
* @dst: The location of the new filesystem; MUST be zeroed
* @size: The size of the file
* @filename: The name of the file
* @data_offset: Filled with the offset of the file data from @dst
*
* Budget mkfs.fat. We use FAT32 (so I don't have to deal with FAT12) with no
* info sector, and a single one-sector FAT. This limits us to 64k of data
* (enough for anyone). The filename must fit in 8.3.
*
* If @dst is %NULL, nothing is copied.
*
* Return: The size of the filesystem in bytes
*/
static size_t create_fat(void *dst, size_t size, const char *filename,
size_t *data_offset)
{
u16 boot_sector = 0;
u16 fat_sector = 1;
u32 root_sector = 2;
u32 file_sector = 3;
u16 sector_size = 512;
u32 file_sectors = (size + sector_size - 1) / sector_size;
u32 sectors = file_sector + file_sectors;
char *ext;
size_t filename_len, ext_len;
int i;
struct boot_sector *bs = dst + boot_sector * sector_size;
struct volume_info *vi = (void *)(bs + 1);
__le32 *fat = dst + fat_sector * sector_size;
struct dir_entry *dirent = dst + root_sector * sector_size;
/* Make sure we fit in the FAT */
if (sectors > sector_size / sizeof(u32))
return 0;
ext = strchr(filename, '.');
if (ext) {
filename_len = ext - filename;
ext++;
ext_len = strlen(ext);
} else {
filename_len = strlen(filename);
ext_len = 0;
}
if (filename_len > 8 || ext_len > 3)
return 0;
if (data_offset)
*data_offset = file_sector * sector_size;
if (!dst)
goto out;
bs->sector_size[0] = sector_size & 0xff;
bs->sector_size[1] = sector_size >> 8;
bs->cluster_size = 1;
bs->reserved = cpu_to_le16(fat_sector);
bs->fats = 1;
bs->media = 0xf8;
bs->total_sect = cpu_to_le32(sectors);
bs->fat32_length = cpu_to_le32(1);
bs->root_cluster = cpu_to_le32(root_sector);
vi->ext_boot_sign = 0x29;
memcpy(vi->fs_type, "FAT32 ", sizeof(vi->fs_type));
memcpy(dst + 0x1fe, "\x55\xAA", 2);
fat[0] = cpu_to_le32(0x0ffffff8);
fat[1] = cpu_to_le32(0x0fffffff);
fat[2] = cpu_to_le32(0x0ffffff8);
for (i = file_sector; file_sectors > 1; file_sectors--, i++)
fat[i] = cpu_to_le32(i + 1);
fat[i] = cpu_to_le32(0x0ffffff8);
for (i = 0; i < sizeof(dirent->nameext.name); i++) {
if (i < filename_len)
dirent->nameext.name[i] = toupper(filename[i]);
else
dirent->nameext.name[i] = ' ';
}
for (i = 0; i < sizeof(dirent->nameext.ext); i++) {
if (i < ext_len)
dirent->nameext.ext[i] = toupper(ext[i]);
else
dirent->nameext.ext[i] = ' ';
}
dirent->start = cpu_to_le16(file_sector);
dirent->size = cpu_to_le32(size);
out:
return sectors * sector_size;
}
typedef size_t (*create_fs_t)(void *, size_t, const char *, size_t *);
static int spl_test_fs(struct unit_test_state *uts, const char *test_name,
create_fs_t create)
{
const char *filename = CONFIG_SPL_FS_LOAD_PAYLOAD_NAME;
struct blk_desc *dev_desc;
char *data_write, *data_read;
void *fs;
size_t fs_size, fs_data, fs_blocks, data_size = SPL_TEST_DATA_SIZE;
loff_t actread;
fs_size = create(NULL, data_size, filename, &fs_data);
ut_assert(fs_size);
fs = calloc(fs_size, 1);
ut_assertnonnull(fs);
data_write = fs + fs_data;
generate_data(data_write, data_size, test_name);
ut_asserteq(fs_size, create(fs, data_size, filename, NULL));
dev_desc = blk_get_devnum_by_uclass_id(UCLASS_MMC, 0);
ut_assertnonnull(dev_desc);
ut_asserteq(512, dev_desc->blksz);
fs_blocks = fs_size / dev_desc->blksz;
ut_asserteq(fs_blocks, blk_dwrite(dev_desc, 0, fs_blocks, fs));
/* We have to use malloc so we can call virt_to_phys */
data_read = malloc_cache_aligned(data_size);
ut_assertnonnull(data_read);
ut_assertok(fs_set_blk_dev_with_part(dev_desc, 0));
ut_assertok(fs_read("/" CONFIG_SPL_FS_LOAD_PAYLOAD_NAME,
virt_to_phys(data_read), 0, data_size, &actread));
ut_asserteq(data_size, actread);
ut_asserteq_mem(data_write, data_read, data_size);
free(data_read);
free(fs);
return 0;
}
static int spl_test_ext(struct unit_test_state *uts)
{
return spl_test_fs(uts, __func__, create_ext2);
}
SPL_TEST(spl_test_ext, DM_FLAGS);
static int spl_test_fat(struct unit_test_state *uts)
{
spl_fat_force_reregister();
return spl_test_fs(uts, __func__, create_fat);
}
SPL_TEST(spl_test_fat, DM_FLAGS);
static bool spl_mmc_raw;
u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
{
return spl_mmc_raw ? MMCSD_MODE_RAW : MMCSD_MODE_FS;
}
static int spl_test_mmc_fs(struct unit_test_state *uts, const char *test_name,
enum spl_test_image type, create_fs_t create_fs,
bool blk_mode)
{
const char *filename = CONFIG_SPL_FS_LOAD_PAYLOAD_NAME;
struct blk_desc *dev_desc;
size_t fs_size, fs_data, img_size, img_data,
plain_size = SPL_TEST_DATA_SIZE;
struct spl_image_info info_write = {
.name = test_name,
.size = type == LEGACY_LZMA ? lzma_compressed_size :
plain_size,
}, info_read = { };
struct disk_partition part = {
.start = 1,
.sys_ind = 0x83,
};
struct spl_image_loader *loader =
SPL_LOAD_IMAGE_GET(0, BOOT_DEVICE_MMC1, spl_mmc_load_image);
struct spl_boot_device bootdev = {
.boot_device = loader->boot_device,
};
void *fs;
char *data, *plain;
img_size = create_image(NULL, type, &info_write, &img_data);
ut_assert(img_size);
fs_size = create_fs(NULL, img_size, filename, &fs_data);
ut_assert(fs_size);
fs = calloc(fs_size, 1);
ut_assertnonnull(fs);
data = fs + fs_data + img_data;
if (type == LEGACY_LZMA) {
plain = malloc(plain_size);
ut_assertnonnull(plain);
generate_data(plain, plain_size, "lzma");
memcpy(data, lzma_compressed, lzma_compressed_size);
} else {
plain = data;
generate_data(plain, plain_size, test_name);
}
ut_asserteq(img_size, create_image(fs + fs_data, type, &info_write,
NULL));
ut_asserteq(fs_size, create_fs(fs, img_size, filename, NULL));
dev_desc = blk_get_devnum_by_uclass_id(UCLASS_MMC, 0);
ut_assertnonnull(dev_desc);
ut_asserteq(512, dev_desc->blksz);
part.size = fs_size / dev_desc->blksz;
ut_assertok(write_mbr_partitions(dev_desc, &part, 1, 0));
ut_asserteq(part.size, blk_dwrite(dev_desc, part.start, part.size, fs));
spl_mmc_raw = false;
if (blk_mode)
ut_assertok(spl_blk_load_image(&info_read, &bootdev, UCLASS_MMC,
0, 1));
else
ut_assertok(loader->load_image(&info_read, &bootdev));
if (check_image_info(uts, &info_write, &info_read))
return CMD_RET_FAILURE;
if (type == LEGACY_LZMA)
ut_asserteq(plain_size, info_read.size);
ut_asserteq_mem(plain, phys_to_virt(info_write.load_addr), plain_size);
if (type == LEGACY_LZMA)
free(plain);
free(fs);
return 0;
}
static int spl_test_blk(struct unit_test_state *uts, const char *test_name,
enum spl_test_image type)
{
spl_fat_force_reregister();
if (spl_test_mmc_fs(uts, test_name, type, create_fat, true))
return CMD_RET_FAILURE;
return spl_test_mmc_fs(uts, test_name, type, create_ext2, true);
}
SPL_IMG_TEST(spl_test_blk, LEGACY, DM_FLAGS);
SPL_IMG_TEST(spl_test_blk, LEGACY_LZMA, DM_FLAGS);
SPL_IMG_TEST(spl_test_blk, IMX8, DM_FLAGS);
SPL_IMG_TEST(spl_test_blk, FIT_EXTERNAL, DM_FLAGS);
SPL_IMG_TEST(spl_test_blk, FIT_INTERNAL, DM_FLAGS);
static int spl_test_mmc_write_image(struct unit_test_state *uts, void *img,
size_t img_size)
{
struct blk_desc *dev_desc;
size_t img_blocks;
dev_desc = blk_get_devnum_by_uclass_id(UCLASS_MMC, 0);
ut_assertnonnull(dev_desc);
img_blocks = DIV_ROUND_UP(img_size, dev_desc->blksz);
ut_asserteq(img_blocks, blk_dwrite(dev_desc,
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
img_blocks, img));
spl_mmc_raw = true;
return 0;
}
static int spl_test_mmc(struct unit_test_state *uts, const char *test_name,
enum spl_test_image type)
{
spl_mmc_clear_cache();
spl_fat_force_reregister();
if (spl_test_mmc_fs(uts, test_name, type, create_ext2, false))
return CMD_RET_FAILURE;
if (spl_test_mmc_fs(uts, test_name, type, create_fat, false))
return CMD_RET_FAILURE;
return do_spl_test_load(uts, test_name, type,
SPL_LOAD_IMAGE_GET(0, BOOT_DEVICE_MMC1,
spl_mmc_load_image),
spl_test_mmc_write_image);
}
SPL_IMG_TEST(spl_test_mmc, LEGACY, DM_FLAGS);
SPL_IMG_TEST(spl_test_mmc, LEGACY_LZMA, DM_FLAGS);
SPL_IMG_TEST(spl_test_mmc, IMX8, DM_FLAGS);
SPL_IMG_TEST(spl_test_mmc, FIT_EXTERNAL, DM_FLAGS);
SPL_IMG_TEST(spl_test_mmc, FIT_INTERNAL, DM_FLAGS);
|