--- /dev/null
+/*
+ * 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 <your-rootfs-size-in-1k-blocks>
+
+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=<your-rootfs-size-in-1k-blocks> \
+ > 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
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