#Makefile for YAFFS as a module## NB this is not yet suitable for putting into the kernel tree.# YAFFS: Yet another FFS. A NAND-flash specific file system. ## Copyright (C) 2002 Aleph One Ltd.#   for Toby Churchill Ltd and Brightstar Engineering## Created by Charles Manning <charles@aleph1.co.uk>## This program is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License version 2 as# published by the Free Software Foundation.## $Id: Makefile,v 1.11 2003/05/20 22:30:35 charles Exp $### Change or override  KERNELDIR to your kernel## comment out USE_xxxx if you don't want these features.KERNELDIR = /usr/src/kernel-headers-2.4.18## Change if you are using a cross-compilerMAKETOOLS = CC=$(MAKETOOLS)gccLD=$(MAKETOOLS)ld# Configurations...# Comment out the stuff you don't want.## CONFIG_YAFFS_RAM_ENABLED.# This adds the yaffsram file system support. Nice for testing on x86, but uses 2MB of RAM.# Don't enable for NAND-based targets.USE_RAM_FOR_TEST = -DCONFIG_YAFFS_RAM_ENABLED# CONFIG_YAFFS_MTD_ENABLED.# This adds the yaffs file system support for working with a NAND mtd.USE_MTD = -DCONFIG_YAFFS_MTD_ENABLED# CONFIG_YAFFS_USE_OLD_MTD# Enable this to use the old MTD stuff that did not have yaffs support.# You can use this to get around compilation problems, but the best# thing to do is to upgrade your MTD support. You will get better speed.#USE_OLD_MTD = -DCONFIG_YAFFS_USE_OLD_MTD# CONFIG_YAFFS_USE_NANDECC# This enables the ECC functions of the generic MTD-NAND driver.# This will not work if you are using the old mtd.## NB UseNANDECC does not work at present with yaffsram.USE_NANDECC = -DCONFIG_YAFFS_USE_NANDECC# CONFIG_YAFFS_ECC_WRONG_ORDER# This makes yaffs_ecc.c use the same ecc byte order as# Steven Hill's nand_ecc.c. If not set, then you get the# same ecc byte order as SmartMedia.#USE_WRONGECC = -DCONFIG_YAFFS_ECC_WRONG_ORDER# CONFIG_YAFFS_USE_GENERIC_RW# Use generic_read/generic_write for reading/writing files. This enables the use of the Linux# file caching layer.## If you disable this, then caching is disabled and file read/write is direct.USE_GENERIC_RW = -DCONFIG_YAFFS_USE_GENERIC_RW# CONFIG_YAFFS_USE_HEADER_FILE_SIZE# When the flash is scanned, two file sizes are constructed:# * The size taken from the object header for the file.# * The size figured out by scanning the data chunks.# If this option is enabled, then the object header size is used, otherwise the scanned size is used.# Suggest leaving this disabled.#USE_HEADER_FILE_SIZE = -DCONFIG_YAFFS_USE_HEADER_FILE_SIZE#CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK# Enabling this turns off the test that chunks are erased in flash before writing to them.# this is safe, since the write verification will fail.# Suggest enabling the test (ie. keep the following line commented) during development to help debug things.#IGNORE_CHUNK_ERASED = -DCONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK#CONFIG_YAFFS_DISABLE_WRITE_VERIFY# I am severely reluctant to provide this config. Disabling the verification is not a good thing to do# since NAND writes can fail silently.# Disabling the write verification will cause your teeth to rot, rats to eat your corn and give you split ends.# You have been warned. ie. Don't uncomment the following line.#IGNORE_WRITE_VERIFY = -DCONFIG_YAFFS_DISBLE_WRITE_VERIFY#CONFIG_YAFFS_SHORT_NAMES_IN_RAM# If this config is set, then short names are stored with the yaffs_Object# This costs an extra 16 bytes of RAM per object, but makes look-ups faster.ENABLE_SHORT_NAMES_IN_RAM = -DCONFIG_SHORT_NAMES_IN_RAM# End of configuration options.YAFFS_CONFIGS = $(USE_RAM_FOR_TEST) $(USE_MTD) $(USE_GENERIC_RW) $(USE_HEADER_FILE_SIZE) $(IGNORE_CHUNK_ERASED) $(IGNORE_WRITE_VERIFY) \                $(ENABLE_SHORT_NAMES_IN_RAM) $(USE_NANDECC) $(USE_OLD_MTD) $(USE_WRONGECC)CFLAGS = -D__KERNEL__ -DMODULE $(YAFFS_CONFIGS)  -I$(KERNELDIR)/include -O2 -WallOBJS = yaffs_fs.o yaffs_guts.o yaffs_ramem.o yaffs_mtdif.o yaffs_ecc.oall: yaffs.o$(OBJS): %.o: %.c Makefile	$(CC) -c $(CFLAGS) $< -o $@yaffs.o: $(OBJS)	$(LD) -r $(OBJS) -o $@clean:	rm -f $(OBJS) core