Compiling the iMote2 kernel: Difference between revisions
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echo "Applying MSB2 Patches and kernel config" | echo "Applying MSB2 Patches and kernel config" | ||
patch -p1 < ../camera-fix.patch | |||
patch -p1 < ../msp-linux-2.6.14-pxa-mmc.patch | patch -p1 < ../msp-linux-2.6.14-pxa-mmc.patch | ||
patch -p1 < ../msp-linux-2.6.14-uart.patch | patch -p1 < ../msp-linux-2.6.14-uart.patch |
Revision as of 04:02, 23 January 2007
Downloads
Build Tools
Title | Link | Description |
---|---|---|
iMote2 Toolchain | updated Mainstone version | Use either the updated Mainstone version with an updated version of binutils. The handheld.org toolchain is similar but won't build the kernel. |
Needed Files
- Zydas driver:
- Official version is available from atheros.com
- Non-official versions (with bug fixes) are available from zd1211.ath.cx
Title | Link | Description |
---|---|---|
PlatformX 1.0 Release | sourceforge.net or local mirror | General PlatformX kernel build |
MSB2 Specific patches | here | Kernel patches and .configs |
2.6.14 linux kernel | kernel.org or local mirror | |
iMote2 JFFS2 image | fs.jffs | Our default starting point JFFS2 image |
Zydas ZD1211(b) wifi driver* | here and .config patch |
Getting Started
If you simply want to build the kernel, the easiest way is to just run the typical build script at the bottom of the page, here.
Typical Build
- MSB2 Build
- Windows RNDIS Gadget Driver
- Wifi Module
- No Standard UART console
Note, make sure the PATH is correct for your compiler and that you run this under tcsh.
Note, that "rm -rf /something" is used in this file so use it at your own risk (especially since some parts like mounting and loading modules must be run as root). It is recommended that you past each line by itself (or in small groups) to avoid any problems and to ensure a successful build
<bash>
- !/bin/tcsh
setenv PATH "/usr/local/arm/3.4.3_binutils/bin/:${PATH}" setenv ARCH arm setenv CROSS_COMPILE arm-linux- wget http://sifl.cs.washington.edu/files/imote2/mirrors/platformX/SG2Release-1_0.tgz wget http://sifl.cs.washington.edu/files/imote2/patches/msb2_patches.tgz wget http://sifl.cs.washington.edu/files/imote2/mirrors/kernel/linux-2.6.14.tar.gz wget http://sifl.cs.washington.edu/files/imote2/images/current/fs.jffs2 wget http://sifl.cs.washington.edu/files/imote2/mirrors/zd1211/zd1211-driver-r83.tgz wget http://sifl.cs.washington.edu/files/imote2/patches/linux-2.6.14_advancedRouter.patch
setenv PLATX_NOCONSOLE 1
tar zxf linux-2.6.14.tar.gz tar zxf SG2Release-1_0.tgz tar zxf msb2_patches.tgz tar zxf zd1211-driver-r83.tgz
echo "--------------------" echo "Building and compiling Kernel" cd linux-2.6.14 echo "Applying SG2 Patches" patch -p1 < ../SG2Release-1_0/src/patch-2.6.14-sg2-10
echo "Applying MSB2 Patches and kernel config" patch -p1 < ../camera-fix.patch patch -p1 < ../msp-linux-2.6.14-pxa-mmc.patch patch -p1 < ../msp-linux-2.6.14-uart.patch patch -p1 < ../msp-linux-2.6.14-sd-detect.patch cp ../msp-linux-2.6.14-config ./.config
echo "Applying Windows RNDIS Patches" patch -p1 < ../msp-linux-2.6.14-winXP-rndis.patch
if($PLATX_NOCONSOLE) echo "No Console patch 1 of 3 (kernel)" if($PLATX_NOCONSOLE) patch -p1 < ../msp-linux-2.6.14-noConsole_boot.patch if($PLATX_NOCONSOLE) patch -p1 < ../msp-linux-2.6.14-noConsole_config.patch
echo "Building kernel" setenv ARCH arm setenv CROSS_COMPILE arm-linux- sed -e 's;export PATH;#export PATH;g' -e 's;export CROSS_COMPILE=;#export CROSS_COMPILE=;g' -e 's;test:;#test:;g' Makefile.platx -i sed -e 's;echo zImage is ${ZIMAGE};#echo zImage is ${ZIMAGE};g' -e 's;${IMAGE}:: force;#${IMAGE}:: force;g' Makefile.platx -i sed -e 's;@scripts/platx_config;#@scripts/platx_config;g' Makefile.platx -i make oldconfig make zImage make modules make modules_install
echo "Copying zImage" cd .. mkdir images cd images cp ../linux-2.6.14/arch/arm/boot/zImage ./ cd ..
echo "--------------------"
echo "Building Zydas driver"
cd zd1211-driver-r83
sed -e 's;MODPATH := /lib/modules/$(VERSION);MODPATH := ../linux-2.6.14/modules/lib/modules/2.6.14_r1.0;g' Makefile -i
sed -e 's;KERNEL_SOURCE=$(MODPATH)/source;KERNEL_SOURCE=$../linux-2.6.14;g' Makefile -i
sed -e "s;CC=gcc;CC=${CROSS_COMPILE}gcc;g" -e "s;CPP=g++;CPP=${CROSS_COMPILE}g++;g" -e "s;LD=ld;LD=${CROSS_COMPILE}ld;g" Makefile -i
sed -e 's;$(MODPATH)/net;$(MODPATH)/kernel/drivers/net;g' Makefile -i
sed -e 's;depmod -a $(VERSION);depmod -F ../linux-2.6.14/System.map -b ../linux-2.6.14/modules -a 2.6.14_r1.0;g' Makefile -i
sed -e 's;gcc -o apdbg apdbg.c;$(CC) -o apdbg apdbg.c;g' Makefile -i
sed -e 's;cp ./apdbg /sbin/apdbg;#cp ./apdbg /sbin/apdbg;g' Makefile -i
make
make install
cd ..
echo "--------------------"
echo "Mounting Filesystem and installing kernel modules"
cd images
mkdir /mnt/jffs2Image
losetup /dev/loop/0 ../fs.jffs2
mknod /dev/mtdblock0 b 31 0
modprobe blkmtd device=/dev/loop/0
mount -t jffs2 /dev/mtdblock0 /mnt/jffs2Image
cd ..
echo "Removing all old modules from JFFS2 Image"
cd images
rm -rf /mnt/jffs2Image/lib/modules/*
echo "Copying new modules to JFFS2 Image"
cp -a ../linux-2.6.14/modules/lib/modules/2.6.14_r1.0/ /mnt/jffs2Image/lib/modules/
echo "Copying Zydas utilities to /sbin"
cp ../zd1211-driver-r83/apdbg /mnt/jffs2Image/sbin
echo "Saving a copy of the .config to the filesystem"
cat ../linux-2.6.14/.config | grep -v # | sed '/^$/d' > /mnt/jffs2Image/lib/modules/kernel.config
if($PLATX_NOCONSOLE) echo "No Console patch 2 of 3 (inittab on fs)"
if($PLATX_NOCONSOLE) patch /mnt/jffs2Image/etc/inittab ../noConsole-inittab.patch
echo "Unmounting image" sync umount /mnt/jffs2Image modprobe --remove blkmtd losetup -d /dev/loop/0 rm fs.jffs2 cp ../fs.jffs2 ./ cd ..
echo "--------------------"
echo "Building blob bootloader"
cd SG2Release-1_0/src
tar zxf blob-px2-10.tgz
cd blob-px2/src
if($PLATX_NOCONSOLE) echo "No Console patch 3 of 3 (patching blob)"
if($PLATX_NOCONSOLE) patch -p1 < ../../../../Blob_noconsole.patch
cd blob
sed -e 's/blob_status.boot_delay = 10;/blob_status.boot_delay = 0;/g' main.c -i
patch -p1 < ../../../../../Blob_imote2_setGPIO10_outputHigh_forBT_and_SD.patch
patch -p1 < ../../../../../Blob_imote2_setGPIO57_outputHigh_forLSB.patch
patch -p1 < ../../../../../Blob_sg2_32kHzOutputDisable.patch
cd ../../
make -f Makefile.cvs
make -f Makefile.cvs
ln -s ../../../linux-2.6.14 linux
./configure --host=arm-linux --with-board=stargate2 \
--with-linux-prefix=$PWD/linux \ --enable-xlli --enable-network --enable-xmodem
make cp src/blob/blob ../../../images/ cd ../../../</bash>
Steps
Extracting all the Images
-
Assuming you placed the platformX release, patches, and kernel in the same directory you could extract them all using the following commands:
<bash>tar zxf linux-2.6.14.tar.gz
tar zxf SG2Release-1_0.tgz
tar zxf msb2_patches.tgz</bash>
Patch the kernel
-
First we apply the SG2 release patches then we apply our MSB2 patches:
<bash>cd linux-2.6.14
echo "Applying SG2 Patches"
patch -p1 < ../SG2Release-1_0/src/patch-2.6.14-sg2-10
echo "Applying MSB2 Patches"
patch -p1 < ../msp-linux-2.6.14-pxa-mmc.patch
patch -p1 < ../msp-linux-2.6.14-uart.patch
patch -p1 < ../msp-linux-2.6.14-sd-detect.patch</bash>
Configure the kernel
-
At this point you can either use the normal SG2 configuration or apply the msb2 standard configuration. Be sure to add your toolchain to your path, if you've installed it in /usr/local/arm/3.4.3_binutils you could do something like this:
<bash>export PATH=/usr/local/arm/3.4.3_binutils/bin/:$PATH
export ARCH=arm
export CROSS_COMPILE=arm-linux-</bash>
- Device Drivers
- USB Support
- USB GadgetSupport
- Support for USB Gadgets (compile into the kernel)
- USB Gadget Drivers (compile into the kernel)
- Make sure 'Ethernet Gadget (with CDC Ethernet Support)' is selected
- Select 'RNDIS support (EXPERIMENTAL)'
- USB GadgetSupport
- USB Support
- Networking
- Networking options
- IP: Advanced router
- IP: Policy routing (will not appear unless "Advanced router" is set)
- Networking options
SG2 Configuration
-
The base SG2 configuration, by itself its typically not too useful.
<bash>export ARCH=arm
export CROSS_COMPILE=arm-linux-
make stargate2_defconfig
make oldconfig</bash>
MSB2 Configuration
-
The default MSB2 configuration, most builds will want to use this ontop of the SG2 base.
<bash>export ARCH=arm
export CROSS_COMPILE=arm-linux-
cp ../msp-linux-2.6.14-config ./.config
make oldconfig</bash>
RNDIS (Windows XP) Ethernet Gadget Configuration
-
If you'd like to be able to connect the iMote2 to a Windows XP host instead of a linux host you can use the RNDIS patch to add Windows XP support to the kernel. Download the patch from here to your build directory. Note, that this patch currently compiles support into the kernel and not as a module.
<bash>export ARCH=arm
export CROSS_COMPILE=arm-linux-
cp ../msp-linux-2.6.14-config ./.config
patch -p1 < ../msp-linux-2.6.14-winXP-rndis.patch
make oldconfig</bash>
Next you will need to do a make menuconfig (after setting up the ARCH/CROSS_COMPILE/path) and select:
Configuring the kernel to use multiple Internet connections
-
In order for the iMote2 to selectively use multiple Internet connections simultaneously, you must enable "policy routing" in the kernel:
<bash>make menuconfig</bash>
Select the following:
Compile the kernel
-
You can then build the kernel as you normally would or perform any additional steps you want to before building. Note that if you are using the Mainstone tools instead of a 3.4.1 toolchain installed in /usr/local/arm/3.4.1 you will need to edit Makefile.platx and comment out the export lines at the top.
<bash>...
- export ARCH=arm
- export CROSS_COMPILE=/usr/local/arm/3.4.1/bin/arm-linux-
- export PATH:=${PATH}:/usr/local/arm/3.4.1/bin/
Building the zd1211(b) wireless driver
-
While the newest versions of Linux support the zd1211(b) out-of-the-box, the kernel used on the iMote2 does not. Therefore, you must download and compile the driver separately:
- Obtain and extract the latest version from [1]. As of the time of this edit, this was r83. You can do this in one step with: <bash>wget http://zd1211.ath.cx/download/zd1211-driver-r83.tgz -O - | tar xvzf -</bash>
- cd to the newly-created directory.
- Edit the Makefile, and change the MODPATH (on line 13) to point at your modules/lib/modules/2.6.14_r1.0/ directory.
- Compile and install:
Putting it all together
-
In order to combine the various steps together to create a ready to use kernel images/modules you need to complete the previous steps, copy the kernel image to someplace convenient, and copy the kernel images to the filesystem. See the script at the bottom of this page for instructions on installing the kernel modules and building the bootloader.
Flashing the kernel
-
You will need to specify the platform (SG2/Intel Mote2) and JTAG cable that you are using (Intel(R) JTAG Cable/JTAG CPU) to XFlash. The following assumes you are programming an Intel Mote2 with a Macraigor Raven JTAG:
xflash -p intelmote2 -tt "JTAG CPU" blob -offset 0x00000000
xflash -p intelmote2 -tt "JTAG CPU" zImage -offset 0x00040000
xflash -p intelmote2 -tt "JTAG CPU" fs.jffs2 -offset 0x00240000
And the following assumes you are programming an Intel Mote2 with an Intel JTAG
xflash -p intelmote2 -tt "Intel(R) JTAG Cable" blob -offset 0x00000000
xflash -p intelmote2 -tt "Intel(R) JTAG Cable" zImage -offset 0x00040000
xflash -p intelmote2 -tt "Intel(R) JTAG Cable" fs.jffs2 -offset 0x00240000