aboutsummaryrefslogtreecommitdiffstats
path: root/README
blob: a3351f6e2eaa1f31369fb75589937b7d1362dba0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
DreamPlug uap8xxx WiFi Access Point Kernel Module Patches for Linux 3.2 (wheezy)
================================================================================

This repository is forked from:

https://github.com/bauermann/dreamplug

The patches were "originally" grabbed from:

http://sheeva.with-linux.com/sheeva/kernel/3/3.2/3.2.9/source/

It looks like mvsdio-1-2.6.30.patch was edited in bauermann's version; i've
included the larger original for comparison.

I made one more small but questionable tweak to get things to compile:
commenting out line 74 of libertas_uap/uap_debug.c.

This repo is modeled on bauermann's 3.4 kernel patches, only "re-backported" to
contain older patches in a simple form for use compiling just the uap8xxx.ko
kernel module for the version 3.2.9 kernel that seems to be the stable release
version for debian wheezy.

This is all a horrible short-term kludge. Preferably the libertas_uap/uap8xxx
code should get added to the kernel mainline, or at least be distributed in a
coherent fashion... but I am not that hero.

Quick Binary Install
--------------------

If you have a dreamplug running the exact linux 3.2.9 kirkwood kernel that came
with debian wheezy or FreedomBox (as of Aug 22, 2012), you can just install the
uap8xxx.ko-3.2.9-kirkwood, firmware, and a modprobe file and you are good to
go... scp them to the device and then:

    # # as root
    # mkdir /lib/modules/$(uname -r)/kernel/drivers/net/wireless/libertas_uap
    # cp uap8xxx.ko-3.2.9-kirkwood /lib/modules/$(uname -r)/kernel/drivers/net/wireless/libertas_uap
    # depmod -a
    # cp -r firmware/mrvl /lib/firmware/mrvl
    # cp modprobe_libertas_uap.conf /etc/modprobe.d/libertas_uap
    # reboot

Extracting kernel module source (on any machine)
------------------------------------------------

This explains the steps I took to extract out the uap8xxx ("libertas_uap")
module code. These are now in the libertas_uap folder in this repo, so you
don't need to repeate these steps.

1. Get the kernel source and other needed packages.
  # apt-get lzma quilt
2. Get the Linux 3.4 kernel.
  # wget http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.2.9.tar.xz
2. Unpack it somewhere.
  # tar xvf linux-3.2.9.tar.bz2
3. Apply the patches found in with-linux-3.2.
  # cd linux-3.2.9
  # ln -s ../with-linux-3.2 patches
  # quilt push -a
4. Copy out the module sources
  # cp -r drivers/net/wireless/libertas_uap/ ../libertas_uap

This source didn't compile for me as-is; I blindly commented out line 74 of
uap_debug.c, which is a horrible hack and might result in kernel crashes down
the line.

Compiling uap8xxx.ko module (on DreamPlug)
------------------------------------------

These instructions based on an old mailing list post by Daniel Gillmor [1].

Generate a tarball of the libertas_uap files extracted above (or found in the
./libertas_uap folder of this repo):

    # tar -cf tar -cf libertas_uap.tar libertas_uap
    # gzip libertas_uap.tar

Copy that tarball over to a DreamPlug running a linux 3.2 kernel (only tested
with the debian wheezy 3.2.9 kernel) and install build requirements (slow!):

    # apt-get update
    # apt-get install module-assistant vim screen linux-headers-kirkwood

As any user, extract the source and build it:

    $ tar xzf libertas_uap.tar.gz
    $ cd libertas_uap
    $ make CONFIG_LIBERTAS_UAP=m -C /lib/modules/$(uname -r)/build M=$(pwd)

This compiles pretty quickly for me, even on the DreamPlug. If that worked out,
install the results as root:

    # mkdir /lib/modules/$(uname -r)/kernel/drivers/net/wireless/libertas_uap
    # cp uap8xxx.ko /lib/modules/$(uname -r)/kernel/drivers/net/wireless/libertas_uap
    # depmod -a

If you don't already have them installed, copy over the ./firmware/mrvl .bin
files and install as root:

    # cp -r firmware/mrvl /lib/firmware/mrvl

To prevent block the libertas_sdio driver from glomming on to the hardware
before uap8xxx can get to it, blacklist the other drivers by adding this file
as /etc/modprobe.d/libertas_uap.conf (or just copy modprobe_libertas_uap.conf
from this repo):

    # blacklist competing modules for the same hardware
    # used by libertas_uap (uap8xxx.ko)
    blacklist libertas_sdio
    blacklist libertas

At this point I did a cold reboot (shutdown and disconnect power), though you
might be able to just modprobe following Dan's instructions:

    root@moo:~# ip link show uap0
    Device "uap0" does not exist.
    root@moo:~# modprobe -v uap8xxx
    insmod /lib/modules/2.6.32-5-kirkwood/kernel/drivers/net/wireless/libertas_uap/uap8xxx.ko
    root@moo:~# ip link show uap0
    4: uap0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
        link/ether 00:24:23:YY:WW:ZZ brd ff:ff:ff:ff:ff:ff

Horray!

[1] http://lists.debian.org/debian-arm/2010/05/msg00081.html