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− | Désolé de pourrir les 'recents changes' :)
| + | Je suis Nicolas Duclos, j'ai 35 ans et je suis informaticien de formation avec un DESS (master) en info à Rennes. |
| + | |
| ==Truc utile== | | ==Truc utile== |
− | Marre de perdre GRUB lors de la réinstallation de Windows ou de perdre l'accès à Windows après à installer Linux (c'est mon cas)<br>
| + | ===GRUB sur clé USB=== |
− | ou tout simplement rendre inaccessible la partition Linux sur votre machine, voici un truc pour installer '''que''' GRUB sur une clé USB<br>
| + | Voici une petite astuce pour : |
− | ''Attention, l'ordre des actions est important''
| + | * ne plus perdre GRUB lors de la réinstallation de Windows |
− | * Formatter la cle USB en fat32 (gparted) | + | * toujours accéder à Windows après l'(la ré-)installation de Linux... (oui oui ca arrive souvent :) ) |
− | * Récuperer la liste des disques monter ainsi que leur ID | + | * rendre inaccessible la partition Linux sur votre machine |
| + | L'astuce est d'installer ''que'' GRUB sur une clé USB. |
| + | {{Note| l'ordre des actions est important}} |
| + | * Formater la cle USB en fat32 (gparted) |
| + | * Récupérer la liste des disques monter ainsi que leur ID |
| <pre class="host"> | | <pre class="host"> |
| $ sudo blkid | | $ sudo blkid |
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| /dev/sdb1: UUID="4C9D-547F" TYPE="vfat" | | /dev/sdb1: UUID="4C9D-547F" TYPE="vfat" |
| </pre> | | </pre> |
− | * installer Grub sur la cle USB | + | * installer Grub sur la clé USB |
| <pre class="host"> | | <pre class="host"> |
− | $ grub-install --no-floppy --root-directory=/media/disk /dev/sdb1 (remplacer sdb1 par la valeur récupérée avec la commande précédente) | + | $ grub-install --no-floppy --root-directory=/media/disk /dev/sdb1 (remplacer sdb1 par la valeur récupérée avec la commande précédente) |
| </pre> | | </pre> |
| * demonter le disque USB | | * demonter le disque USB |
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| $ sudo install-mbr /dev/sdb1 | | $ sudo install-mbr /dev/sdb1 |
| </pre> | | </pre> |
− | * Mettre le flag boot sur la cle USB (gparted) | + | * Mettre le flag boot sur la clé USB (gparted) |
− | | + | ===make gconfig=== |
− | ==Banc à sable==
| + | Installer les bibliothèques pour lancer make gconfig |
− | | + | |
− | | + | |
− | | + | |
− | ==Prerequisites for Linux installation==
| + | |
− | ===Install needed software packages=== | + | |
− | For build kernel image for the apf27 Armadeus plateform, we should install uboot-mkimage program
| + | |
| <pre class="host"> | | <pre class="host"> |
− | $ sudo apt-get install uboot-mkimage
| + | sudo apt-get install libgtk2.0-dev libglib2.0-dev libglade2-dev |
| </pre> | | </pre> |
− | ===Update the environment variables=== | + | ==Participation à la documentation Armadeus Project== |
− | Theses environment variables install the Android and Armadeus folder in our home directory, but of course, it can be placed anywhere!
| + | * [[Android]] |
− | <pre class="config">
| + | |
− | export ANDROID_SOURCE=~/apf27droid
| + | |
− | export ANDROID_SDK=~/android-sdk-linux_x86-1.5_r3
| + | |
− | export ARMADEUS=~/armadeus-3.1
| + | |
− | export PATH=${PATH}:${ANDROID_SDK}/tools:${ANDROID_SOURCE}/bin
| + | |
− | </pre>
| + | |
− | | + | |
− | ==Download Android source==
| + | |
− | The [http://source.android.com/download getting Android source] document describes how to set up our local work environment.
| + | |
− | Follow theses instructions until ''Installing Repo''.<br>
| + | |
− | <pre class="host">
| + | |
− | $ mkdir ANDROID_SOURCE
| + | |
− | $ cd $ANDROID_SOURCE
| + | |
− | $ mkdir bin
| + | |
− | $ curl http://android.git.kernel.org/repo >$ANDROID_SOURCE/bin/repo
| + | |
− | $ chmod a+x $ANDROID_SOURCE/bin/repo
| + | |
− | $ repo init -u git://android.git.kernel.org/platform/manifest.git -b android-sdk-1.5_r3
| + | |
− | $ repo sync
| + | |
− | </pre>
| + | |
− | Since android-sdk-1.5_r3 branch, the Linux kernel isn't with the Android source,
| + | |
− | We can download it in a compress archive (tar.gz) file with this [http://android.git.kernel.org/?p=kernel/common.git;a=snapshot;h=refs/heads/android-2.6.29;sf=tgz android-kernel-2.6.29] (about (70Mib) or with git repository (more 300Mib)
| + | |
− | <pre class="host">
| + | |
− | $ mkdir $ANDROID_SOURCE/kernel
| + | |
− | cd $ANDROID_SOURCE/kernel
| + | |
− | git clone git://android.git.kernel.org/kernel/common.git android-2.6.29
| + | |
− | </pre>
| + | |
− | | + | |
− | | + | |
− | #/home/rennes/dev/armadeus-3.1/downloads/
| + | |
− | ./patch-kernel.sh /home/rennes/dev/android-source/kernel . patch-2.6.29.4.bz2
| + | |
− | #/home/rennes/dev/armadeus-3.1/buildroot/toolchain/kernel-headers
| + | |
− | ./patch-kernel.sh /home/rennes/dev/android-source/kernel ./kernel-headers linux-2.6.29.4-\*.patch{,.gz,.bz2}
| + | |
− | #/home/rennes/dev/armadeus-3.1/buildroot/target/device/armadeus/linux/kernel-patches/2.6.29.4
| + | |
− | ./patch-kernel.sh /home/rennes/dev/android-source/kernel ./2.6.29 \*.patch{,.gz,.bz2}
| + | |
− | mkdir /home/rennes/dev/android-source/kernel/drivers/armadeus
| + | |
− | cp -r /home/rennes/dev/armadeus-3.1/target/linux/modules/* /home/rennes/dev/android-source/kernel/drivers/armadeus
| + | |
− | | + | |
− | make ARCH=arm CROSS_COMPILE=../prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi- uImage
| + | |
− | cp ./arch/arm/boot/uImage /tftpboot/apf27-linux.bin
| + | |
− | | + | |
− | # modifier les arguments pour le démarage du noyau
| + | |
− | setenv bootargs console=ttySMX0,115200 mtdparts=mxc_nand.0:640k(U-boot)ro,384k(U-boot_env),512k(firmware),5M(kernel),-(rootfs) root=/dev/mtdblock4 rootfstype=jffs2 ip=192.168.1.24:192.168.1.189:192.168.1.1:255.255.255.0:apf27::off
| + | |
− | setenv mmcroot '/dev/mmcblk0p2 rw'
| + | |
− | setenv addmmcargs 'setenv bootargs ${bootargs} root=${mmcroot} rootfstype=${mmcrootfstype} init=\init androidboot.console=ttyS0'
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− | | + | |
− | #installer MTD Utilies
| + | |
− | sudo apt-get install mtd-utils
| + | |
− | mkfs.jffs2 -r ./android-source/out/target/product/generic/system -n -o /tftpboot/apf27-rootfs.arm.jffs2a
| + | |
− | | + | |
− | #installer les bibliothèques pour lancer make gconfig
| + | |
− | sudo apt-get install libgtk2.0-dev libglib2.0-dev libglade2-dev
| + | |
− | | + | |
− | | + | |
− | # modifier le fichier d'init.
| + | |
− | /home/rennes/dev/android-source/out/target/product/generic/root/init.rc
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− | | + | |
− | $ cd $YOUR_PATH
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− | $ mkdir rootfs
| + | |
− | $ cd rootfs
| + | |
− | $ rm -rf *
| + | |
− | $ cp -Rfp ../android-source/out/target/product/generic/root/* .
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− | $ cp -Rfp ../android-source/out/target/product/generic/system/ .
| + | |
− | $ cp -Rfp ../android-source/out/target/product/generic/data/ .
| + | |
− | $ tar cfvz ../apf27-rootfs-android.tar.gz ./
| + | |
− | $ cd ..
| + | |
− | $ sudo blkid
| + | |
− | $ sudo mkfs.ext2 /dev/sdd1 (replace X with your MMC reader drive letter, if your Laptop has an integrated MMC reader then use mmcblk0p1 instead of sdX1)
| + | |
− | $ sudo mkdir -p /media/mmc
| + | |
− | $ sudo mount /dev/sdd1 /media/mmc
| + | |
− | $ sudo tar xvf apf27-rootfs-android.tar.gz -C /media/mmc
| + | |
− | $ sudo chmod -R 777 /media/mmc/*
| + | |
− | | + | |
− | Sur l'APF27
| + | |
− | # mount /dev/mmcblk0p2 /mnt/mmc
| + | |
− | # strace -f -ff -tt -s 200 chroot /mnt/mmc /init androidboot.console=ttyS0
| + | |
− | # strace chroot /mnt/mmc /init androidboot.console=ttyS0
| + | |
− | | + | |
− | # tester android avec l'emulateur
| + | |
− | $ make ARCH=arm goldfish_defconfig
| + | |
− | $ make ARCH=arm CROSS_COMPILE=../prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi
| + | |
− | # créer des AVD (Android Virtual Device)
| + | |
− | $ ~/dev/android-sdk-linux_x86-1.5_r3/tools/android create avd -n APF27-H -t 2 -s 272x480
| + | |
− | $ ~/dev/android-sdk-linux_x86-1.5_r3/tools/android create avd -n APF27-L -t 2 -s 480x272
| + | |
− | # cf http://developer.android.com/guide/developing/tools/emulator.html
| + | |
− | $ $ANDROID/out/host/linux-x86/bin/emulator -avd APF27-H -sysdir $ANDROID/out/target/product/generic/ -kernel $ANDROID/kernel/arch/arm/boot/zImage -data $ANDROID/out/target/product/generic/userdata.img -ramdisk $ANDROID/out/target/product/generic/ramdisk.img -system $ANDROID/out/target/product/generic/system.img
| + | |
− | | + | |
− | | + | |
− | | + | |
− | Android Root File system ¶
| + | |
− | | + | |
− | Android emulator has 3 basic images on tools/lib/images directory.
| + | |
− | | + | |
− | * ramdisk.img
| + | |
− | * system.img
| + | |
− | * userdata.img
| + | |
− | | + | |
− | ramdisk.img is gziped cpio archive. ramdisk image is very small and contains configuration files, and some executable files such as init and recovery. The init file is not a regular system V init. It is made just for the Android and do special things to start up the Android system.
| + | |
− | | + | |
− | system.img and userdata.img are VMS Alpha executable. system.img and userdata.img have the contents of /system and /data directory on root file system. They are mapped on NAND devices with yaffs2 file system. /dev/block/mtdblock0 for /system and /dev/block/mtdblock1 for /data.
| + | |
− | | + | |
− | /system directory has libraries and default system packages (*.apk). /data directory has timezone, cache, and ApiDemos.apk package.
| + | |
− | | + | |
− | The main services are zygote(/system/bin/app_process), runtime(/system/bin/runtime), and dbus(/system/bin/dbus-daemon). You can see the /etc/init.rc file on the Android ramdisk image.
| + | |
− | | + | |
− | ...
| + | |
− | zygote {
| + | |
− | exec /system/bin/app_process
| + | |
− | args {
| + | |
− | 0 -Xzygote
| + | |
− | 1 /system/bin
| + | |
− | 2 --zygote
| + | |
− | }
| + | |
− | autostart 1
| + | |
− | }
| + | |
− | runtime {
| + | |
− | exec /system/bin/runtime
| + | |
− | autostart 1
| + | |
− | }
| + | |
− | ...
| + | |
− | dbus {
| + | |
− | exec /system/bin/dbus-daemon
| + | |
− | args.0 --system
| + | |
− | args.1 --nofork
| + | |
− | autostart 1
| + | |
− | }
| + | |
− | ...
| + | |
− | | + | |
− | | + | |
− | | + | |
− | Questions on ramdisk, userdata, and system img files
| + | |
− | | + | |
− | ramdisk.img is a small partition image that is mounted read-only by the kernel at boot time. It only contains /init and a few config files. It is used to start init which will mount the rest of the system images properly and run the init procedure. A Ramdisk is a standard Linux feature.
| + | |
− | | + | |
− | system.img is a partition image that will be mounted as / and thus contains all system binaries
| + | |
− | userdata.img is a partition image that can be mounted as /data and thus contains all application-specific and user-specific data.
| + | |
− | | + | |
− | The build system generates these files, which can later be flashed to a real device, however the emulator uses them in a different way:
| + | |
− | | + | |
− | * system.img is copied into a temporary file, which is used by the emulator session. So any change you make to / as root in the emulator are lost when the program exits
| + | |
− | | + | |
− | * userdata.img is only used when you use -wipe-data. Instead, it uses ~/.android/userdata-qemu.img (on Unix) as the persistent /data partition image. Using -wipe-data simply copes the content of userdata.img into userdata-qemu.img
| + | |
Je suis Nicolas Duclos, j'ai 35 ans et je suis informaticien de formation avec un DESS (master) en info à Rennes.