genode

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History

Stefan Kalkowski 786fe805da base: introduce caching attributes (fix #1184 ) On ARM it's relevant to not only distinguish between ordinary cached memory and write-combined one, but also having non-cached memory too. To insert the appropriated page table entries e.g.: in the base-hw kernel, we need to preserve the information about the kind of memory from allocation until the pager resolves a page fault. Therefore, this commit introduces a new Cache_attribute type, and replaces the write_combined boolean with the new type where necessary.		2014-06-26 10:57:26 +02:00
..
include	base: introduce caching attributes (fix #1184 )	2014-06-26 10:57:26 +02:00
lib	dde_rump: migrate to new ports mechanism	2014-05-27 11:14:46 +02:00
patches	Move repositories to 'repos/' subdirectory	2014-05-14 16:08:00 +02:00
ports	Enable hash checks for ports mechanism	2014-05-27 13:45:03 +02:00
run	dde_rump: rump_iso compare output on 64bit systems	2014-06-06 14:54:30 +02:00
src	dde_rump: implement rumpuser_dprintf()	2014-06-06 14:54:30 +02:00
Makefile	Enable hash checks for ports mechanism	2014-05-27 13:45:03 +02:00
README	Move repositories to 'repos/' subdirectory	2014-05-14 16:08:00 +02:00

README

                             ================================
                             Genode's Rump Kernel kernel port
                             ================================

This repository contains the Genode version of the [http://wiki.netbsd.org/rumpkernel/ - rump kernel].
The kernel is currently used to gain file-system access from within Genode. In
order to achieve that, a Genode file-system server is located at
_src/server/rump_fs_. For accessing the server through the libc, the _libc_fs_
plugin can be facilitated, which is available in the _libports_ repository.

Building instructions
#####################

In order to build the file-system server, issue

! make prepare

from the directory this file is contained in.


Add

! REPOSITORIES += $(GENODE_DIR)/repos/dde_rump

to your _etc/build.conf_ file of you build directory.

Finally,

! make server/rumps_fs

called from your build directory will build the server. You may also specify

! make run/rump_ext2

to run a simple test scenario.


Configuration
#############

Here is an example snippet that configures the server:

!<start name="rump_fs">
!  <resource name="RAM" quantum="8M" />
!  <provides><service name="File_system"/></provides>
!  <config fs="ext2fs"><policy label="" root="/" writeable="yes"/></config>
!</start>

The server is looking for a service that provides a Genode block session. If
there is more than one block session in the system, the block session must be
routed to the right block-session server. The value of the _fs_ attribute of
the _config_ node can be one of the following: _ext2fs_ for EXT2, _cd9660_ for
ISO-9660, or _msdos_ for FAT file-system support. _root_ defines the directory
of the file system as seen as root directory by the client. The server hands
most of its RAM quota to the rump kernel. This means the larger the quota is,
the larger the internal block caches of the rump kernel will be.