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Diffstat (limited to 'README')
| -rw-r--r-- | README | 169 |
1 files changed, 121 insertions, 48 deletions
@@ -1,52 +1,125 @@ -Patches in with-linux-3.4 -========================= +DreamPlug uap8xxx WiFi Access Point Kernel Module Patches for Linux 3.2 (wheezy) +================================================================================ -These patches were adapted to apply on Linux 3.4 from the ones found here: +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/ -They assume the Dreamplug has the original u-boot shipped by Marvel. This -means that the kernel will expect it to report the Guruplug machine id -2659 instead of the official 3550, and it assumes u-boot doesn't provide -a flattened device tree. If your u-boot uses the Dreamplug id then you -can just remove the section about linux-3.4/arch/arm/tools/mach-types -from dreamplug-3.4.0.patch. If it also provides a flattened device tree, -then you don't need dreamplug-3.4.0.patch at all. - -Using the kernel patches ------------------------- - -Instructions based on freedom-maker's README [1]. - -To compile your own kernel, you can use config-3.4.0-1bauer2-kirkwood as basis. -Follow the following steps on the DreamPlug to compile a new kernel: - - 1. Get the kernel source and other needed packages. - # apt-get kernel-package lzma quilt - 2. Get the Linux 3.4 kernel. - # wget https://www.kernel.org/pub/linux/kernel/v3.0/linux-3.4.tar.bz2 - 2. Unpack it somewhere. - # tar xfj linux-3.4.tar.bz2 - 3. Apply the patches found in with-linux-3.4. - # cd linux-3.4 - # ln -s ../with-linux-3.4 patches - # quilt push -a - 4. Copy the config and compile. - # cp ../config-3.4.0-1bauer2-kirkwood .config - # make-kpkg clean - # make-kpkg --append-to-version -1bauer2-kirkwood --revision=3.4.0-1bauer2 --initrd --cross_compile=- kernel_image kernel_headers - 5. Install the packages. - # dpkg -i ../linux-{image,headers}-3.4.0-1bauer2-kirkwood_3.4.0-1bauer2_armel.deb - -After kernel is installed on device, hooks should be calling: - # flash-kernel 3.4.0-1bauer2-kirkwood - -After that you should get a uImage and uInitrd files under /boot. - -These packages should get a kernel up and running into DreamPlug device. -The compilation process takes 6 hours on the DreamPlug. You will need -approximately 1 GB of free space for the build (including the size of the -unpacked kernel source). - --- -[1] http://anonscm.debian.org/git/freedombox/freedom-maker.git/ +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 |