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authorNico Schottelius <nico-kernel@schottelius.org>2006-03-24 03:18:18 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-24 07:33:27 -0800
commit7e9dd124b90af80824754f68c0b246cfd0fb624b (patch)
tree412027f65e6c5df873295397fe1c70e900285a50 /Documentation/nfsroot.txt
parentd129bceb1d44ed3c23b99164849193703372bab4 (diff)
downloadlinux-linaro-stable-7e9dd124b90af80824754f68c0b246cfd0fb624b.tar.gz
[PATCH] Updated Documentation/nfsroot.txt
I today booted the first time my embedded device using Linux 2.6.15.2, which was booted by pxelinux, which then bootet itself from the nfsroot. This went pretty fine, but when I was reading through Documentation/nfsroot.txt I saw that there are some more modern versions available of loading the kernel and passing parameters. Signed-off-by: Nico Schottelius <nico-kernel@schottelius.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/nfsroot.txt')
-rw-r--r--Documentation/nfsroot.txt17
1 files changed, 14 insertions, 3 deletions
diff --git a/Documentation/nfsroot.txt b/Documentation/nfsroot.txt
index a87d4af216c0..d56dc71d9430 100644
--- a/Documentation/nfsroot.txt
+++ b/Documentation/nfsroot.txt
@@ -3,6 +3,7 @@ Mounting the root filesystem via NFS (nfsroot)
Written 1996 by Gero Kuhlmann <gero@gkminix.han.de>
Updated 1997 by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
+Updated 2006 by Nico Schottelius <nico-kernel-nfsroot@schottelius.org>
@@ -168,7 +169,6 @@ depend on what facilities are available:
root. If it got a BOOTP answer the directory name in that answer
is used.
-
3.2) Using LILO
When using LILO you can specify all necessary command line
parameters with the 'append=' command in the LILO configuration
@@ -177,7 +177,11 @@ depend on what facilities are available:
LILO and its 'append=' command please refer to the LILO
documentation.
-3.3) Using loadlin
+3.3) Using GRUB
+ When you use GRUB, you simply append the parameters after the kernel
+ specification: "kernel <kernel> <parameters>" (without the quotes).
+
+3.4) Using loadlin
When you want to boot Linux from a DOS command prompt without
having a local hard disk to mount as root, you can use loadlin.
I was told that it works, but haven't used it myself yet. In
@@ -185,7 +189,7 @@ depend on what facilities are available:
lar to how LILO is doing it. Please refer to the loadlin docu-
mentation for further information.
-3.4) Using a boot ROM
+3.5) Using a boot ROM
This is probably the most elegant way of booting a diskless
client. With a boot ROM the kernel gets loaded using the TFTP
protocol. As far as I know, no commercial boot ROMs yet
@@ -194,6 +198,13 @@ depend on what facilities are available:
and its mirrors. They are called 'netboot-nfs' and 'etherboot'.
Both contain everything you need to boot a diskless Linux client.
+3.6) Using pxelinux
+ Using pxelinux you specify the kernel you built with
+ "kernel <relative-path-below /tftpboot>". The nfsroot parameters
+ are passed to the kernel by adding them to the "append" line.
+ You may perhaps also want to fine tune the console output,
+ see Documentation/serial-console.txt for serial console help.
+