partition
partition [ptable[=bool]
] [fstab[=bool]
] [name=string
] [size=hex
] [type=type
] [csum[=bool]
] [bin=file
] [mpoint=directory
] [mopts=options
] [dump=integer
] [pass=integer
] [room=hex
] [bootloader=file
] [bootloader_pad=hex
] [mbsize=hex
]
partition
generates commands for adding a
partition table entry and/or a line to /etc/fstab.
ptable
implies that an entry in the partition table
will be added as well as commands for generating an image file.
fstab
implies that a line in /etc/fstab will be
added. Either ptable
or fstab
must
be given. Both ptable
and fstab
can
be given as long as all their other required options are also given.
bin
=file Executable binary to be stored instead of the default
(rescue.bin in Linux) at the beginning of the rescue
partition. It only has a meaning if
ptable
is given and type
is rescue.
bootloader
=file The file name of the boot loader. It only has a meaning if
ptable
is given and type
is rescue.
bootloader_pad
=hex Size to pad the boot loader to as hexadecimal integer
prefixed with "0x". It only has a meaning if
ptable
is given and type
is rescue.
csum[=bool]
Add checksum to the partition table entry if bool is yes or not given. The checksum can be used by the rescue code to check if the partition has been changed (assumed corrupted!) so it is for read-only partitions only.
dump
=integerThe dump field in /etc/fstab. Default is 0.
fstab[=bool]
Include the partition in /etc/fstab if
bool is yes
or not given. Requires dev
,
mpoint
, type
,
dump
, pass
and if
mpoint
is /,
name
(used for name of the image file to
be generated).
mbsize
=hex The media blocksize as hexadecimal integer prefixed with
"0x". It only has a meaning if ptable
is
given and type
is
jffs2.
mopts
=optionsMount options. The mount options field in /etc/fstab.
mpoint
=directory Mount point. It will be used as the root directory of the
file system when the file system image is created and the
mount point in /etc/fstab (if fstab
is
given). It is required if fstab
is given
or if ptable
is given and
type
is a file system type.
name
=stringName of the partition in the partiton table and first part of the name of the image file to be generated.
pass
=integerThe pass field in /etc/fstab. Default is 0.
ptable[=bool]
Include the partition in the partition table if
bool is yes
or not given. Requires name
,
size
and type
to be
given as well.
room
=hexSpecifies the room reserved in the flash for the partition as hexadecimal integer prefixed with "0x". There must be some reserved room to cope with bad blocks that can occur e.g. when NAND flash is used. If room is set, then NAND flash is assumed to be used.
size
=hexPartition size as hexadecimal integer prefixed with "0x".
type
=typePartition type and/or file system type. Known values of type are rescue, kernel, cramfs, jffs and jffs2.
Typical partition
function calls from a configure
script for a product with NOR flash:
partition ptable type=rescue name=rescue size=0x010000 csum=yes \ bin=rfl.bin partition ptable type=kernel name=flash1 csum=yes size=0x350000 partition name=rootfs \ fstab type=cramfs dev=/dev/part/rootfs mpoint=/ mopts=noauto pass=1 partition ptable type=jffs2 name=flash2 csum=no size=0x0A0000 \ fstab dev=/dev/part/rwfs mpoint=/mnt/flash mopts=noauto pass=2 partition fstab type=proc dev=proc mpoint=/proc partition fstab type=tmpfs dev=tmpfs mpoint=/var partition fstab type=sysfs dev=sysfs mpoint=/sys partition fstab type=devpts dev=devpts mpoint=/dev/pts
Typical partition
function calls from a configure
script for a product with NAND flash having a block size of 16384
bytes:
partition ptable type=rescue name=rescue csum=yes \ size=0x020000 room=0x040000 \ bootloader=nandboot.bin bootloader_pad=0x04000 \ bin=rfl.bin partition ptable type=kernel name=kernel csum=yes \ size=0x150000 room=0x160000 \ partition ptable type=jffs2 name=rootfs csum=yes \ size=0x280000 room=0x300000 mbsize=0x04000 \ fstab dev=/dev/part/rootfs mpoint=/ mopts=noauto pass=1 partition ptable type=jffs2 name=rwfs csum=no \ size=0x3A0000 room=0x400000 mbsize=0x04000 \ fstab dev=/dev/part/rwfs mpoint=/mnt/flash mopts=noauto pass=2 partition fstab type=proc dev=proc mpoint=/proc partition fstab type=tmpfs dev=tmpfs mpoint=/var partition fstab type=sysfs dev=sysfs mpoint=/sys partition fstab type=devpts dev=devpts mpoint=/dev/pts