1 #Makefile for YAFFS as a module
3 # NB this is not yet suitable for putting into the kernel tree.
4 # YAFFS: Yet another FFS. A NAND-flash specific file system.
6 # Copyright (C) 2002 Aleph One Ltd.
7 # for Toby Churchill Ltd and Brightstar Engineering
9 # Created by Charles Manning <charles@aleph1.co.uk>
11 # This program is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU General Public License version 2 as
13 # published by the Free Software Foundation.
15 # $Id: Makefile,v 1.12 2003-08-20 03:53:39 charles Exp $
18 ## Change or override KERNELDIR to your kernel
19 ## comment out USE_xxxx if you don't want these features.
21 KERNELDIR = /usr/src/kernel-headers-2.4.18
23 ## Change if you are using a cross-compiler
30 # Comment out the stuff you don't want.
33 # CONFIG_YAFFS_RAM_ENABLED.
34 # This adds the yaffsram file system support. Nice for testing on x86, but uses 2MB of RAM.
35 # Don't enable for NAND-based targets.
37 USE_RAM_FOR_TEST = -DCONFIG_YAFFS_RAM_ENABLED
40 # CONFIG_YAFFS_MTD_ENABLED.
41 # This adds the yaffs file system support for working with a NAND mtd.
43 USE_MTD = -DCONFIG_YAFFS_MTD_ENABLED
45 # CONFIG_YAFFS_USE_OLD_MTD
46 # Enable this to use the old MTD stuff that did not have yaffs support.
47 # You can use this to get around compilation problems, but the best
48 # thing to do is to upgrade your MTD support. You will get better speed.
50 #USE_OLD_MTD = -DCONFIG_YAFFS_USE_OLD_MTD
52 # CONFIG_YAFFS_USE_NANDECC
53 # This enables the ECC functions of the generic MTD-NAND driver.
54 # This will not work if you are using the old mtd.
56 # NB UseNANDECC does not work at present with yaffsram.
58 USE_NANDECC = -DCONFIG_YAFFS_USE_NANDECC
60 # CONFIG_YAFFS_ECC_WRONG_ORDER
61 # This makes yaffs_ecc.c use the same ecc byte order as
62 # Steven Hill's nand_ecc.c. If not set, then you get the
63 # same ecc byte order as SmartMedia.
65 #USE_WRONGECC = -DCONFIG_YAFFS_ECC_WRONG_ORDER
67 # CONFIG_YAFFS_USE_GENERIC_RW
68 # Use generic_read/generic_write for reading/writing files. This enables the use of the Linux
71 # If you disable this, then caching is disabled and file read/write is direct.
73 USE_GENERIC_RW = -DCONFIG_YAFFS_USE_GENERIC_RW
75 # CONFIG_YAFFS_USE_HEADER_FILE_SIZE
76 # When the flash is scanned, two file sizes are constructed:
77 # * The size taken from the object header for the file.
78 # * The size figured out by scanning the data chunks.
79 # If this option is enabled, then the object header size is used, otherwise the scanned size is used.
80 # Suggest leaving this disabled.
82 #USE_HEADER_FILE_SIZE = -DCONFIG_YAFFS_USE_HEADER_FILE_SIZE
84 #CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
85 # Enabling this turns off the test that chunks are erased in flash before writing to them.
86 # this is safe, since the write verification will fail.
87 # Suggest enabling the test (ie. keep the following line commented) during development to help debug things.
89 #IGNORE_CHUNK_ERASED = -DCONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
91 #CONFIG_YAFFS_DISABLE_WRITE_VERIFY
92 # I am severely reluctant to provide this config. Disabling the verification is not a good thing to do
93 # since NAND writes can fail silently.
94 # Disabling the write verification will cause your teeth to rot, rats to eat your corn and give you split ends.
95 # You have been warned. ie. Don't uncomment the following line.
97 #IGNORE_WRITE_VERIFY = -DCONFIG_YAFFS_DISBLE_WRITE_VERIFY
99 #CONFIG_YAFFS_SHORT_NAMES_IN_RAM
100 # If this config is set, then short names are stored with the yaffs_Object
101 # This costs an extra 16 bytes of RAM per object, but makes look-ups faster.
103 ENABLE_SHORT_NAMES_IN_RAM = -DCONFIG_SHORT_NAMES_IN_RAM
105 # End of configuration options.
107 YAFFS_CONFIGS = $(USE_RAM_FOR_TEST) $(USE_MTD) $(USE_GENERIC_RW) $(USE_HEADER_FILE_SIZE) $(IGNORE_CHUNK_ERASED) $(IGNORE_WRITE_VERIFY) \
108 $(ENABLE_SHORT_NAMES_IN_RAM) $(USE_NANDECC) $(USE_OLD_MTD) $(USE_WRONGECC)
111 CFLAGS = -D__KERNEL__ -DMODULE $(YAFFS_CONFIGS) -I$(KERNELDIR)/include -O2 -Wall
114 OBJS = yaffs_fs.o yaffs_guts.o yaffs_ramem.o yaffs_mtdif.o yaffs_ecc.o
119 $(OBJS): %.o: %.c Makefile
120 $(CC) -c $(CFLAGS) $< -o $@
123 $(LD) -r $(OBJS) -o $@