2 # SPDX-License-Identifier: GPL-2.0+
4 # (C) Copyright 2015 Stephen Warren
6 # This script tests U-Boot's FAT filesystem code's ability to read non-
9 # When porting the ff.c FAT parsing code into U-Boot, it was found that ff.c
10 # always reads files cluster-by-cluster, which results in poor performance.
11 # This was solved by adding a patch to ff.c to coalesce reads of adjacent
12 # clusters. Since this patch needed to correctly handle non-contiguous files,
13 # this test was written to validate that.
15 # To execute the test, simply run it from the U-Boot source root directory:
18 # ./test/fs/fat-noncontig-test.sh
20 # The test will create a FAT filesystem image, record the CRC of a randomly
21 # generated file in the image, build U-Boot sandbox, invoke U-Boot sandbox to
22 # read the file and validate that the CRCs match. Expected output is shown
23 # below. The important part of the log is the penultimate line that contains
24 # either "PASS" or "FAILURE".
26 # mkfs.fat 3.0.26 (2014-03-07)
29 # U-Boot 2015.10-rc4-00018-g4b22a3e5513f (Oct 03 2015 - 13:49:23 -0600)
32 # Using default environment
37 # Net: No ethernet found.
38 # => host bind 0 sandbox/fat-noncontig.img
39 # => load host 0:0 1000 noncontig.img
40 # 33584964 bytes read in 18 ms (1.7 GiB/s)
41 # => crc32 1000 $filesize 0
42 # crc32 for 00001000 ... 02008743 ==> 6a080523
43 # => if itest.l *0 != 2305086a; then echo FAILURE; else echo PASS; fi
47 # All temporary files used by this script are created in ./sandbox to avoid
48 # polluting the source tree. test/fs/fs-test.sh also uses this directory for
51 # TODO: Integrate this (and many other corner-cases e.g. different types of
52 # FAT) with fs-test.sh so that a single script tests everything filesystem-
56 img=${odir}/fat-noncontig.img
60 mnttestfn=${mnt}/${testfn}
64 for prereq in fallocate mkfs.fat dd crc32; do
65 if [ ! -x "`which $prereq`" ]; then
66 echo "Missing $prereq binary. Exiting!"
71 make O=${odir} -s sandbox_defconfig && make O=${odir} -s -j8
74 if [ ! -f ${img} ]; then
75 fallocate -l 40M ${img}
77 echo fallocate failed - using dd instead
78 dd if=/dev/zero of=${img} bs=1024 count=$((40 * 1024))
80 echo Could not create empty disk image
86 echo Could not create FAT filesystem
90 sudo mount -o loop,uid=$(id -u) ${img} ${mnt}
92 echo Could not mount test filesystem
96 for ((sects=8; sects < 512; sects += 8)); do
97 fn=${mnt}/keep-${sects}.img
98 dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
99 fn=${mnt}/remove-${sects}.img
100 dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
103 rm -f ${mnt}/remove-*.img
105 # 511 deliberately to trigger a file size that's not a multiple of the
106 # sector size (ignoring sizes that are multiples of both).
107 dd if=${fill} of=${mnttestfn} bs=511 >/dev/null 2>&1
110 if [ $? -ne 0 ]; then
111 echo Could not unmount test filesystem
116 sudo mount -o ro,loop,uid=$(id -u) ${img} ${mnt}
117 if [ $? -ne 0 ]; then
118 echo Could not mount test filesystem
121 crc=0x`crc32 ${mnttestfn}`
123 if [ $? -ne 0 ]; then
124 echo Could not unmount test filesystem
128 crc=`printf %02x%02x%02x%02x \
130 $(((${crc} >> 8) & 0xff)) \
131 $(((${crc} >> 16) & 0xff)) \
134 ./sandbox/u-boot << EOF
136 load host 0:0 ${loadaddr} ${testfn}
137 crc32 ${loadaddr} \$filesize ${crcaddr}
138 if itest.l *${crcaddr} != ${crc}; then echo FAILURE; else echo PASS; fi
141 if [ $? -ne 0 ]; then
142 echo U-Boot exit status indicates an error