3 # (C) Copyright 2015 Stephen Warren
5 # SPDX-License-Identifier: GPL-2.0+
7 # This script tests U-Boot's FAT filesystem code's ability to read non-
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.
16 # To execute the test, simply run it from the U-Boot source root directory:
19 # ./test/fs/fat-noncontig-test.sh
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".
27 # mkfs.fat 3.0.26 (2014-03-07)
30 # U-Boot 2015.10-rc4-00018-g4b22a3e5513f (Oct 03 2015 - 13:49:23 -0600)
33 # Using default environment
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 $filesize 0
43 # crc32 for 00001000 ... 02008743 ==> 6a080523
44 # => if itest.l *0 != 2305086a; then echo FAILURE; else echo PASS; fi
48 # All temporary files used by this script are created in ./sandbox to avoid
49 # polluting the source tree. test/fs/fs-test.sh also uses this directory for
52 # TODO: Integrate this (and many other corner-cases e.g. different types of
53 # FAT) with fs-test.sh so that a single script tests everything filesystem-
57 img=${odir}/fat-noncontig.img
61 mnttestfn=${mnt}/${testfn}
65 for prereq in fallocate mkfs.fat dd crc32; do
66 if [ ! -x "`which $prereq`" ]; then
67 echo "Missing $prereq binary. Exiting!"
72 make O=${odir} -s sandbox_defconfig && make O=${odir} -s -j8
75 if [ ! -f ${img} ]; then
76 fallocate -l 40M ${img}
79 sudo mount -o loop,uid=$(id -u) ${img} ${mnt}
81 for ((sects=8; sects < 512; sects += 8)); do
82 fn=${mnt}/keep-${sects}.img
83 dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
84 fn=${mnt}/remove-${sects}.img
85 dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
88 rm -f ${mnt}/remove-*.img
90 # 511 deliberately to trigger a file size that's not a multiple of the
91 # sector size (ignoring sizes that are multiples of both).
92 dd if=${fill} of=${mnttestfn} bs=511 >/dev/null 2>&1
97 sudo mount -o ro,loop,uid=$(id -u) ${img} ${mnt}
98 crc=0x`crc32 ${mnttestfn}`
101 crc=`printf %02x%02x%02x%02x \
103 $(((${crc} >> 8) & 0xff)) \
104 $(((${crc} >> 16) & 0xff)) \
107 ./sandbox/u-boot << EOF
109 load host 0:0 ${loadaddr} ${testfn}
110 crc32 ${loadaddr} \$filesize ${crcaddr}
111 if itest.l *${crcaddr} != ${crc}; then echo FAILURE; else echo PASS; fi