FTL(8)FTL(8)NAMEftl - Flash Translation Layer formatter
SYNOPSIS
disk/ftl flashsize secsize kfsfile output
DESCRIPTION
Ftl reads a file system image in kfs(3) format from kfsfile and adds
the data structures needed to make it a valid image for the Flash
Translation Layer driver ftl(3). The result is written to the output
file, which can be copied to initialise the flash memory of a suitable
device (see flash(3)).
The other arguments describe the characteristics of the flash memory:
flashsize
The size in bytes of the flash memory to which output will be
copied; exactly flashsize bytes will be written to output.
secsize
The effective erase unit (sector) size in bytes of the flash
memory, as seen by the processor, having allowed for bus width.
For example, a bank of flash formed from byte-wide flash chips,
each with 16kbyte sectors, wired across a 4 byte bus, might have
an effective erase unit size of 64kbytes.
The kfsfile must not be larger than the size (length) of the ftldata
file provided by ftl(3) for the target flash device or partition.
(That size is invariably less than the size of the raw flash, owing to
the overhead of FTL data structures and a reserve pool of 5% to reduce
the number of erase cycles; see ftl(3)).
SOURCE
/appl/cmd/disk/ftl.b
SEE ALSOflash(3), ftl(3), kfs(3)FTL(8)
