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4a282742 SW |
1 | #!/bin/bash |
2 | ||
3 | # (C) Copyright 2015 Stephen Warren | |
4 | # | |
5 | # SPDX-License-Identifier: GPL-2.0+ | |
6 | ||
7 | # This script tests U-Boot's FAT filesystem code's ability to read non- | |
8 | # contiguous files. | |
9 | ||
10 | # When porting the ff.c FAT parsing code into U-Boot, it was found that ff.c | |
11 | # always reads files cluster-by-cluster, which results in poor performance. | |
12 | # This was solved by adding a patch to ff.c to coalesce reads of adjacent | |
13 | # clusters. Since this patch needed to correctly handle non-contiguous files, | |
14 | # this test was written to validate that. | |
15 | # | |
16 | # To execute the test, simply run it from the U-Boot source root directory: | |
17 | # | |
18 | # cd u-boot | |
19 | # ./test/fs/fat-noncontig-test.sh | |
20 | # | |
21 | # The test will create a FAT filesystem image, record the CRC of a randomly | |
22 | # generated file in the image, build U-Boot sandbox, invoke U-Boot sandbox to | |
23 | # read the file and validate that the CRCs match. Expected output is shown | |
24 | # below. The important part of the log is the penultimate line that contains | |
25 | # either "PASS" or "FAILURE". | |
26 | # | |
27 | # mkfs.fat 3.0.26 (2014-03-07) | |
28 | # | |
29 | # | |
30 | # U-Boot 2015.10-rc4-00018-g4b22a3e5513f (Oct 03 2015 - 13:49:23 -0600) | |
31 | # | |
32 | # DRAM: 128 MiB | |
33 | # Using default environment | |
34 | # | |
35 | # In: serial | |
36 | # Out: lcd | |
37 | # Err: lcd | |
38 | # Net: No ethernet found. | |
39 | # => host bind 0 sandbox/fat-noncontig.img | |
40 | # => load host 0:0 1000 noncontig.img | |
41 | # 33584964 bytes read in 18 ms (1.7 GiB/s) | |
42 | # => crc32 1000 $filesize 0 | |
43 | # crc32 for 00001000 ... 02008743 ==> 6a080523 | |
44 | # => if itest.l *0 != 2305086a; then echo FAILURE; else echo PASS; fi | |
45 | # PASS | |
46 | # => reset | |
47 | # | |
48 | # All temporary files used by this script are created in ./sandbox to avoid | |
49 | # polluting the source tree. test/fs/fs-test.sh also uses this directory for | |
50 | # the same purpose. | |
51 | # | |
52 | # TODO: Integrate this (and many other corner-cases e.g. different types of | |
53 | # FAT) with fs-test.sh so that a single script tests everything filesystem- | |
54 | # related. | |
55 | ||
56 | odir=sandbox | |
57 | img=${odir}/fat-noncontig.img | |
58 | mnt=${odir}/mnt | |
59 | fill=/dev/urandom | |
60 | testfn=noncontig.img | |
61 | mnttestfn=${mnt}/${testfn} | |
62 | crcaddr=0 | |
63 | loadaddr=1000 | |
64 | ||
65 | for prereq in fallocate mkfs.fat dd crc32; do | |
66 | if [ ! -x "`which $prereq`" ]; then | |
67 | echo "Missing $prereq binary. Exiting!" | |
68 | exit 1 | |
69 | fi | |
70 | done | |
71 | ||
72 | make O=${odir} -s sandbox_defconfig && make O=${odir} -s -j8 | |
73 | ||
74 | mkdir -p ${mnt} | |
75 | if [ ! -f ${img} ]; then | |
76 | fallocate -l 40M ${img} | |
34a60d9b SW |
77 | if [ $? -ne 0 ]; then |
78 | echo fallocate failed - using dd instead | |
79 | dd if=/dev/zero of=${img} bs=1024 count=$((40 * 1024)) | |
80 | if [ $? -ne 0 ]; then | |
81 | echo Could not create empty disk image | |
82 | exit $? | |
83 | fi | |
84 | fi | |
4a282742 | 85 | mkfs.fat ${img} |
34a60d9b SW |
86 | if [ $? -ne 0 ]; then |
87 | echo Could not create FAT filesystem | |
88 | exit $? | |
89 | fi | |
4a282742 SW |
90 | |
91 | sudo mount -o loop,uid=$(id -u) ${img} ${mnt} | |
34a60d9b SW |
92 | if [ $? -ne 0 ]; then |
93 | echo Could not mount test filesystem | |
94 | exit $? | |
95 | fi | |
4a282742 SW |
96 | |
97 | for ((sects=8; sects < 512; sects += 8)); do | |
98 | fn=${mnt}/keep-${sects}.img | |
99 | dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1 | |
100 | fn=${mnt}/remove-${sects}.img | |
101 | dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1 | |
102 | done | |
103 | ||
104 | rm -f ${mnt}/remove-*.img | |
105 | ||
106 | # 511 deliberately to trigger a file size that's not a multiple of the | |
107 | # sector size (ignoring sizes that are multiples of both). | |
108 | dd if=${fill} of=${mnttestfn} bs=511 >/dev/null 2>&1 | |
109 | ||
110 | sudo umount ${mnt} | |
34a60d9b SW |
111 | if [ $? -ne 0 ]; then |
112 | echo Could not unmount test filesystem | |
113 | exit $? | |
114 | fi | |
4a282742 SW |
115 | fi |
116 | ||
117 | sudo mount -o ro,loop,uid=$(id -u) ${img} ${mnt} | |
34a60d9b SW |
118 | if [ $? -ne 0 ]; then |
119 | echo Could not mount test filesystem | |
120 | exit $? | |
121 | fi | |
4a282742 SW |
122 | crc=0x`crc32 ${mnttestfn}` |
123 | sudo umount ${mnt} | |
34a60d9b SW |
124 | if [ $? -ne 0 ]; then |
125 | echo Could not unmount test filesystem | |
126 | exit $? | |
127 | fi | |
4a282742 SW |
128 | |
129 | crc=`printf %02x%02x%02x%02x \ | |
130 | $((${crc} & 0xff)) \ | |
131 | $(((${crc} >> 8) & 0xff)) \ | |
132 | $(((${crc} >> 16) & 0xff)) \ | |
133 | $((${crc} >> 24))` | |
134 | ||
135 | ./sandbox/u-boot << EOF | |
136 | host bind 0 ${img} | |
137 | load host 0:0 ${loadaddr} ${testfn} | |
138 | crc32 ${loadaddr} \$filesize ${crcaddr} | |
139 | if itest.l *${crcaddr} != ${crc}; then echo FAILURE; else echo PASS; fi | |
140 | reset | |
141 | EOF | |
34a60d9b SW |
142 | if [ $? -ne 0 ]; then |
143 | echo U-Boot exit status indicates an error | |
144 | exit $? | |
145 | fi |