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author | blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-10-05 10:12:53 +0000 |
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committer | blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-10-05 10:12:53 +0000 |
commit | 5c105d9f3fd086aff195d3849dcf847d6b0bd927 (patch) | |
tree | 1229a11f725bfa58aa7c57a76898553bb5f6654a /target/linux/uml/README | |
download | openwrt-5c105d9f3fd086aff195d3849dcf847d6b0bd927.tar.gz openwrt-5c105d9f3fd086aff195d3849dcf847d6b0bd927.zip |
branch Attitude Adjustment
git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/uml/README')
-rw-r--r-- | target/linux/uml/README | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/uml/README b/target/linux/uml/README new file mode 100644 index 000000000..c71448555 --- /dev/null +++ b/target/linux/uml/README @@ -0,0 +1,45 @@ +Openwrt inside a user mode linux. Why would we even want this many ask? + +There are potentially a lot of reasons, one obvious one to me, it allows +folks to 'kick the tires' without actually flashing up any hardware. It's +also a great environment for porting over packages, you can get a package +fully functional in the uclibc root environment inside a uml without actually +disturbing your 'real router', and then rebuild for a specific target once +it's fully tested. + +This is a first stab at a build that 'just works' and there will be more +cleanup to come. The simple directions are:- + +Configure for uml target +Configure with an ext4 root file system +build it all + +In your bin directory you will find a kernel and an ext4 root file system +when it's finished. Just run it like this:- + +bin/uml/openwrt-uml-vmlinux ubd0=bin/uml/openwrt-uml-ext4.img con=null ssl=null ssl0=fd:0,fd:1 con0=null,fd:2 + +The uml will start, and eventually the serial console of the uml will be at your +console prompt. If you would like it in xterms, substitute con=xterm and con0=xterm. +No networking is configured, but, it's a starting point. The resulting file system +has just enough free space to start kicking the tires and playing in the world of +'embedded routers' along with all the resource restrictions that come with that +world. + +To configure networking and more, refer to the user mode linux documentation online. +A quick start goes along this line. install the uml-utilities packages so you have +the uml switch in and running, then add a command param to your uml start like this + +eth0=daemon,00:01:01:01:01:01,unix,/<your uml switch control socket here> + +With that in, and uml networking actually functional (can be a challenge at times), +you should be able to ifconfig the interface and talk to the host side, or, if you +bridged the uml switch to your host network, you should be able to run udhcp and be +away with networking off to the world. Again, if you are unfamiliar with uml and +uml networking, please read the docs and how-to stuff available on the net. It does +take some fiddling to get it started and working right the first time, but after that, +it opens up a whole new world of virtual machines. + + + +http://user-mode-linux.sourceforge.net/ |