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fs/ext2: add support for ext2 rev0 and rev1

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Some bootloaders have a buggy ext2 support, and require ext2 rev1
instead of the traditional ext2 rev0 that genext2fs produces.

tune2fs accepts only one '-O list' at a time, so we need to construct
a list of -O options.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Yann E. MORIN 2013-04-11 12:17:53 +00:00 committed by Peter Korsgaard
parent aaefab09c7
commit 5fd27fc849
3 changed files with 28 additions and 7 deletions
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20
fs/ext2/Config.in
View File

@ -6,12 +6,20 @@ config BR2_TARGET_ROOTFS_EXT2
if BR2_TARGET_ROOTFS_EXT2
config BR2_TARGET_ROOTFS_EXT2_2
bool
choice
bool "ext2/3/4 variant"
default BR2_TARGET_ROOTFS_EXT2_2
default BR2_TARGET_ROOTFS_EXT2_2r0
config BR2_TARGET_ROOTFS_EXT2_2
bool "ext2"
config BR2_TARGET_ROOTFS_EXT2_2r0
bool "ext2 (rev0)"
select BR2_TARGET_ROOTFS_EXT2_2
config BR2_TARGET_ROOTFS_EXT2_2r1
bool "ext2 (rev1)"
select BR2_TARGET_ROOTFS_EXT2_2
config BR2_TARGET_ROOTFS_EXT2_3
bool "ext3"
@ -27,6 +35,12 @@ config BR2_TARGET_ROOTFS_EXT2_GEN
default 3 if BR2_TARGET_ROOTFS_EXT2_3
default 4 if BR2_TARGET_ROOTFS_EXT2_4
# All ext generations are revision 1, except ext2r0, which is revision 0
config BR2_TARGET_ROOTFS_EXT2_REV
int
default 0 if BR2_TARGET_ROOTFS_EXT2_2r0
default 1 if !BR2_TARGET_ROOTFS_EXT2_2r0
config BR2_TARGET_ROOTFS_EXT2_BLOCKS
int "size in blocks (leave at 0 for auto calculation)"
default 0

3
fs/ext2/ext2.mk
View File

@ -20,7 +20,8 @@ endif
ROOTFS_EXT2_DEPENDENCIES = host-genext2fs host-e2fsprogs
EXT2_ENV = GEN=$(BR2_TARGET_ROOTFS_EXT2_GEN)
EXT2_ENV = GEN=$(BR2_TARGET_ROOTFS_EXT2_GEN)
EXT2_ENV += REV=$(BR2_TARGET_ROOTFS_EXT2_REV)
define ROOTFS_EXT2_CMD
PATH=$(TARGET_PATH) $(EXT2_ENV) fs/ext2/genext2fs.sh -d $(TARGET_DIR) $(EXT2_OPTS) $@

12
fs/ext2/genext2fs.sh
View File

@ -78,15 +78,21 @@ e2tunefsck() {
}
# Check we know what generation to generate
case "${GEN}" in
2|3|4)
case "${GEN}:${REV}" in
2:0|2:1|3:1|4:1)
;;
*)
printf "%s: unknown ext generation to generate\n" "${0##*/}" >&2
printf "%s: unknown ext generation '%s' and/or revision '%s'\n" \
"${0##*/}" "${GEN}" "${REV}" >&2
exit 1
;;
esac
# Upgrade to rev1 if needed
if [ ${REV} -ge 1 ]; then
EXT_OPTS_O="${EXT_OPTS_O},filetype"
fi
# Add a journal for ext3 and above
if [ ${GEN} -ge 3 ]; then
EXT_OPTS="${EXT_OPTS} -j -J size=1"