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[/] [test_project/] [trunk/] [linux_sd_driver/] [Documentation/] [blackfin/] [Filesystems] - Blame information for rev 62

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/*
 * File:         Documentation/blackfin/Filesystems
 * Based on:
 * Author:
 *
 * Created:
 * Description:  This file contains the simple DMA Implementation for Blackfin
 *
 * Rev:          $Id: Filesystems 2384 2006-11-01 04:12:43Z magicyang $
 *
 * Modified:
 *               Copyright 2004-2006 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 */
 
                How to mount the root file system in uClinux/Blackfin
                -----------------------------------------------------
 
1       Mounting EXT3 File system.
        ------------------------
 
        Creating an EXT3 File system for uClinux/Blackfin:
 
 
Please follow the steps to form the EXT3 File system and mount the same as root
file system.
 
a       Make an ext3 file system as large as you want the final root file
        system.
 
                mkfs.ext3  /dev/ram0 
 
b       Mount this Empty file system on a free directory as:
 
                mount -t ext3 /dev/ram0  ./test
                        where ./test is the empty directory.
 
c       Copy your root fs directory that you have so carefully made over.
 
                cp -af  /tmp/my_final_rootfs_files/* ./test
 
                (For ex: cp -af uClinux-dist/romfs/* ./test)
 
d       If you have done everything right till now you should be able to see
        the required "root" dir's (that's etc, root, bin, lib, sbin...)
 
e       Now unmount the file system
 
                umount  ./test
 
f       Create the root file system image.
 
                dd if=/dev/ram0 bs=1k count= \
                > ext3fs.img
 
 
Now you have to tell the kernel that will be mounting this file system as
rootfs.
So do a make menuconfig under kernel and select the Ext3 journaling file system
support under File system --> submenu.
 
 
2.      Mounting EXT2 File system.
        -------------------------
 
By default the ext2 file system image will be created if you invoke make from
the top uClinux-dist directory.
 
 
3.      Mounting CRAMFS File System
        ----------------------------
 
To create a CRAMFS file system image execute the command
 
        mkfs.cramfs ./test cramfs.img
 
        where ./test is the target directory.
 
 
4.      Mounting ROMFS File System
        --------------------------
 
To create a ROMFS file system image execute the command
 
        genromfs -v -V "ROMdisk" -f romfs.img -d ./test
 
        where ./test is the target directory
 
 
5.      Mounting the JFFS2 Filesystem
        -----------------------------
 
To create a compressed JFFS filesystem (JFFS2), please execute the command
 
        mkfs.jffs2 -d ./test -o jffs2.img
 
        where ./test is the target directory.
 
However, please make sure the following is in your kernel config.
 
/*
 * RAM/ROM/Flash chip drivers
 */
#define CONFIG_MTD_CFI 1
#define CONFIG_MTD_ROM 1
/*
 * Mapping drivers for chip access
 */
#define CONFIG_MTD_COMPLEX_MAPPINGS 1
#define CONFIG_MTD_BF533 1
#undef CONFIG_MTD_UCLINUX
 
Through the u-boot boot loader, use the jffs2.img in the corresponding
partition made in linux-2.6.x/drivers/mtd/maps/bf533_flash.c.
 
NOTE -  Currently the Flash driver is available only for EZKIT. Watch out for a
        STAMP driver soon.
 
 
6.      Mounting the NFS File system
        -----------------------------
 
        For mounting the NFS please do the following in the kernel config.
 
        In Networking Support --> Networking options --> TCP/IP networking -->
                IP: kernel level autoconfiguration
 
        Enable BOOTP Support.
 
        In Kernel hacking --> Compiled-in kernel boot parameter add the following
 
                root=/dev/nfs rw ip=bootp
 
        In File system --> Network File system, Enable
 
                NFS file system support --> NFSv3 client support
                Root File system on NFS
 
        in uClibc menuconfig, do the following
        In Networking Support
                enable Remote Procedure Call (RPC) support
                        Full RPC Support
 
        On the Host side, ensure that /etc/dhcpd.conf looks something like this
 
                ddns-update-style ad-hoc;
                allow bootp;
                subnet 10.100.4.0 netmask 255.255.255.0 {
                default-lease-time 122209600;
                max-lease-time 31557600;
                group {
                        host bf533 {
                                hardware ethernet 00:CF:52:49:C3:01;
                                fixed-address 10.100.4.50;
                                option root-path "/home/nfsmount";
                        }
                }
 
        ensure that /etc/exports looks something like this
                /home/nfsmount *(rw,no_root_squash,no_all_squash)
 
         run the following commands as root (may differ depending on your
         distribution) :
                -  service nfs start
                -  service portmap start
                -  service dhcpd start
                -  /usr/sbin/exportfs

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* File: Documentation/blackfin/Filesystems`
3			`* Based on:`
4			`* Author:`
5			`*`
6			`* Created:`
7			`* Description: This file contains the simple DMA Implementation for Blackfin`
8			`*`
9			`* Rev: $Id: Filesystems 2384 2006-11-01 04:12:43Z magicyang $`
10			`*`
11			`* Modified:`
12			`* Copyright 2004-2006 Analog Devices Inc.`
13			`*`
14			`* Bugs: Enter bugs at http://blackfin.uclinux.org/`
15			`*`
16			`*/`
17
18			`How to mount the root file system in uClinux/Blackfin`
19			`-----------------------------------------------------`
20
21			`1 Mounting EXT3 File system.`
22			`------------------------`
23
24			`Creating an EXT3 File system for uClinux/Blackfin:`
25
26
27			`Please follow the steps to form the EXT3 File system and mount the same as root`
28			`file system.`
29
30			`a Make an ext3 file system as large as you want the final root file`
31			`system.`
32
33			`mkfs.ext3 /dev/ram0`
34
35			`b Mount this Empty file system on a free directory as:`
36
37			`mount -t ext3 /dev/ram0 ./test`
38			`where ./test is the empty directory.`
39
40			`c Copy your root fs directory that you have so carefully made over.`
41
42			`cp -af /tmp/my_final_rootfs_files/* ./test`
43
44			`(For ex: cp -af uClinux-dist/romfs/* ./test)`
45
46			`d If you have done everything right till now you should be able to see`
47			`the required "root" dir's (that's etc, root, bin, lib, sbin...)`
48
49			`e Now unmount the file system`
50
51			`umount ./test`
52
53			`f Create the root file system image.`
54
55			`dd if=/dev/ram0 bs=1k count= \`
56			`> ext3fs.img`
57
58
59			`Now you have to tell the kernel that will be mounting this file system as`
60			`rootfs.`
61			`So do a make menuconfig under kernel and select the Ext3 journaling file system`
62			`support under File system --> submenu.`
63
64
65			`2. Mounting EXT2 File system.`
66			`-------------------------`
67
68			`By default the ext2 file system image will be created if you invoke make from`
69			`the top uClinux-dist directory.`
70
71
72			`3. Mounting CRAMFS File System`
73			`----------------------------`
74
75			`To create a CRAMFS file system image execute the command`
76
77			`mkfs.cramfs ./test cramfs.img`
78
79			`where ./test is the target directory.`
80
81
82			`4. Mounting ROMFS File System`
83			`--------------------------`
84
85			`To create a ROMFS file system image execute the command`
86
87			`genromfs -v -V "ROMdisk" -f romfs.img -d ./test`
88
89			`where ./test is the target directory`
90
91
92			`5. Mounting the JFFS2 Filesystem`
93			`-----------------------------`
94
95			`To create a compressed JFFS filesystem (JFFS2), please execute the command`
96
97			`mkfs.jffs2 -d ./test -o jffs2.img`
98
99			`where ./test is the target directory.`
100
101			`However, please make sure the following is in your kernel config.`
102
103			`/*`
104			`* RAM/ROM/Flash chip drivers`
105			`*/`
106			`#define CONFIG_MTD_CFI 1`
107			`#define CONFIG_MTD_ROM 1`
108			`/*`
109			`* Mapping drivers for chip access`
110			`*/`
111			`#define CONFIG_MTD_COMPLEX_MAPPINGS 1`
112			`#define CONFIG_MTD_BF533 1`
113			`#undef CONFIG_MTD_UCLINUX`
114
115			`Through the u-boot boot loader, use the jffs2.img in the corresponding`
116			`partition made in linux-2.6.x/drivers/mtd/maps/bf533_flash.c.`
117
118			`NOTE - Currently the Flash driver is available only for EZKIT. Watch out for a`
119			`STAMP driver soon.`
120
121
122			`6. Mounting the NFS File system`
123			`-----------------------------`
124
125			`For mounting the NFS please do the following in the kernel config.`
126
127			`In Networking Support --> Networking options --> TCP/IP networking -->`
128			`IP: kernel level autoconfiguration`
129
130			`Enable BOOTP Support.`
131
132			`In Kernel hacking --> Compiled-in kernel boot parameter add the following`
133
134			`root=/dev/nfs rw ip=bootp`
135
136			`In File system --> Network File system, Enable`
137
138			`NFS file system support --> NFSv3 client support`
139			`Root File system on NFS`
140
141			`in uClibc menuconfig, do the following`
142			`In Networking Support`
143			`enable Remote Procedure Call (RPC) support`
144			`Full RPC Support`
145
146			`On the Host side, ensure that /etc/dhcpd.conf looks something like this`
147
148			`ddns-update-style ad-hoc;`
149			`allow bootp;`
150			`subnet 10.100.4.0 netmask 255.255.255.0 {`
151			`default-lease-time 122209600;`
152			`max-lease-time 31557600;`
153			`group {`
154			`host bf533 {`
155			`hardware ethernet 00:CF:52:49:C3:01;`
156			`fixed-address 10.100.4.50;`
157			`option root-path "/home/nfsmount";`
158			`}`
159			`}`
160
161			`ensure that /etc/exports looks something like this`
162			`/home/nfsmount *(rw,no_root_squash,no_all_squash)`
163
164			`run the following commands as root (may differ depending on your`
165			`distribution) :`
166			`- service nfs start`
167			`- service portmap start`
168			`- service dhcpd start`
169			`- /usr/sbin/exportfs`

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[/] [test_project/] [trunk/] [linux_sd_driver/] [Documentation/] [blackfin/] [Filesystems] - Blame information for rev 62