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| Désolé de pourrir les 'recent changes' :)
| | Je suis Nicolas Duclos, j'ai 35 ans et je suis informaticien de formation avec un DESS (master) en info à Rennes. |
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| ==Truc utile== | | ==Truc utile== |
| ===GRUB sur clé USB=== | | ===GRUB sur clé USB=== |
| Voici une petite astuce pour : | | Voici une petite astuce pour : |
| * ne plus perdre GRUB lors de la réinstallation de Windows | | * ne plus perdre GRUB lors de la réinstallation de Windows |
| * ne plus avoir accès à Windows après l'installation de Linux | | * toujours accéder à Windows après l'(la ré-)installation de Linux... (oui oui ca arrive souvent :) ) |
| * rendre inaccessible la partition Linux sur votre machine | | * rendre inaccessible la partition Linux sur votre machine |
| L'astuce est d'installer '''que''' GRUB sur une clé USB. '''Attention, l'ordre des actions est important''' | | L'astuce est d'installer ''que'' GRUB sur une clé USB. |
| * Formatter la cle USB en fat32 (gparted) | | {{Note| l'ordre des actions est important}} |
| * Récuperer la liste des disques monter ainsi que leur ID | | * 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=== | | ===make gconfig=== |
| installer les bibliothèques pour lancer make gconfig
| | Installer les bibliothèques pour lancer make gconfig |
| <pre class="host"> | | <pre class="host"> |
| sudo apt-get install libgtk2.0-dev libglib2.0-dev libglade2-dev | | sudo apt-get install libgtk2.0-dev libglib2.0-dev libglade2-dev |
| </pre> | | </pre> |
| ==Banc à sable== | | ==Participation à la documentation Armadeus Project== |
| | | * [[Android]] |
| Ce qui suit n'est qu'un brouillon avec les fautes de frappes et d'orthographe comme il se doit.
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| ==Prerequisites for Linux installation==
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| ===Install needed software packages===
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| Install these package for build the kernel image and for format the mmc/µSD card
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| <pre class="host">
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| $ sudo apt-get install uboot-mkimage mtd-utils
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| </pre>
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| ===Update the environment variables===
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| Theses environment variables install the Android and Armadeus folder in our home directory, but of course, it can be placed anywhere!
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| <pre class="config">
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| export ANDROID_SOURCE=~/apf27droid
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| export ANDROID_SDK=~/android-sdk-linux_x86-1.5_r3
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| export ARMADEUS=~/armadeus-3.1
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| export PATH=${PATH}:${ANDROID_SDK}/tools:${ANDROID_SOURCE}/bin
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| </pre>
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| ==Construction of Android environment==
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| ===Download Android source===
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| The [http://source.android.com/download getting Android source] document describes how to set up our local work environment.
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| Follow theses instructions until ''Installing Repo''.<br>
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| <pre class="host">
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| $ mkdir ANDROID_SOURCE
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| $ cd $ANDROID_SOURCE
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| $ mkdir bin
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| $ curl http://android.git.kernel.org/repo >$ANDROID_SOURCE/bin/repo
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| $ chmod a+x $ANDROID_SOURCE/bin/repo
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| $ repo init -u git://android.git.kernel.org/platform/manifest.git -b android-sdk-1.5_r3
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| $ repo sync
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| </pre>
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| Since android-sdk-1.5_r3 branch, the Linux kernel isn't with the Android source,
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| 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)
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| <pre class="host">
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| $ mkdir $ANDROID_SOURCE/kernel
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| $ cd $ANDROID_SOURCE/kernel
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| $ git clone git://android.git.kernel.org/kernel/common.git android-2.6.29
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| </pre>
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| | |
| ===Apply the Armadeus patchset===
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| Je n'ai pas indiqué (a faire) dans les pré-requit, il faut naturelle avoir installé et compilé le projet Armadeus-3.1.
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| Dans un second temps, j'indiquerai les différentes actions pour ne pas être obliger à compiler le projet Armadeus, notamment pour la rustine patch-2.6.29.4.bz2
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| <pre class="host">
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| $ $ARMADEUS/buildroot/toolchain/patch-kernel.sh $ANDROID_SOURCE/kernel $ARMADEUS/downloads patch-2.6.29.4.bz2
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| $ $ARMADEUS/buildroot/toolchain/patch-kernel.sh $ANDROID_SOURCE/kernel $ARMADEUS/buildroot/toolchain/kernel-headers linux-2.6.29.4-\*.patch{,.gz,.bz2}
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| $ $ARMADEUS/buildroot/toolchain/patch-kernel.sh $ANDROID_SOURCE/kernel $ARMADEUS/buildroot/target/device/armadeus/linux/kernel-patches/2.6.29.4 \*.patch{,.gz,.bz2}
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| $ mkdir $ANDROID_SOURCE/kernel/drivers/armadeus
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| $ cp -r $ARMADEUS/target/linux/modules/* $ANDROID_SOURCE/kernel/drivers/armadeus
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| $ cp $ARMADEUS/target/device/armadeus/apf27/apf27-linux-2.6.29.config $ANDROID_SOURCE/kernel/arch/arm/configs/apf27_android_defconfig
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| </pre>
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| ===Battery patch===
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| At the beginning, reboot happened over again even though Android logo appeared on board.
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| Result of investigation, we found that battery power was returned with 0 when boot..
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| A effectuer!!!!
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| ===update android kernel configuration for APF27===
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| C'est un point délicat, Google/Android ne donne '''aucune''' informations dessus
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| <pre class="config">
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| </pre>
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| ===compile Android kernel===
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| <pre class="host">
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| $ cd $ANDROID_SOURCE/kernel
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| $ make ARCH=arm mrproper
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| $ make ARCH=arm apf27_android_defconfig
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| $ make ARCH=arm CROSS_COMPILE=../prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi- uImage
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| $ cp ./arch/arm/boot/uImage $TFTPBOOT/apf27-linux.bin
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| </pre>
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| ==Making SD card for boot==
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| ===Copying the Android root filesystem===
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| Android’s root file system is generated in $ANDROID_SOURCE/out/target/product/generic
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| <pre class="host">
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| $ cd $ANDROID_SOURCE/out/target/product/generic
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| $ mkdir $ANDROID_SOURCE/rootfs (or '$ sudo rm -rf $ANDROID_SOURCE/rootfs/*' if the folder already exist )
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| $ cp -a root/* $ANDROID_SOURCE/rootfs/
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| $ cp -a system/* $ANDROID_SOURCE/rootfs/system/
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| $ cd $ANDROID_SOURCE/rootfs
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| $ sudo chown -R root.root .
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| $ sudo chmod -R a+rwX data system
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| </pre>
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| ===Change init.rc===
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| To do!!!!
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| ===Formatting an MMC/SD card===
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| We will create two partitions on our mmc/sd card, The first one will use for Android memory card, the second one will use for Android file system.
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| First connect your card reader to your workstation, with the MMC/SD card inside. Type the '''dmesg''' command to see which device is used by your workstation. Let’s assume that this device is '''/dev/sdb'''
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| <pre class="host">
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| $ dmesg
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| ...
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| [ 9145.613954] sdb: sdb1 sdb2
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| [ 9145.615125] sd 10:0:0:0: [sdc] Attached SCSI removable disk
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| [ 9145.615258] sd 10:0:0:0: Attached scsi generic sg3 type 0
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| </pre>
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| Type the mount command to check your currently mounted partitions. If MMC/SD partitions are mounted, unmount them.<br>
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| In a terminal edit partitions with fdisk:
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| <pre class="host">
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| sudo fdisk /dev/sdb
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| </pre>
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| Delete any existing partition with the d command.<br>
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| Now, create the boot partition:
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| <pre class="host">
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| Command (m for help): n
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| Command action
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| e extended
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| p primary partition (1-4)
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| p
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| Partition number (1-4): 1
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| First cylinder (1-495, default 1): 1
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| Last cylinder, +cylinders or +size{K,M,G} (1-239, default 239): +1G
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| </pre>
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| Change its type to FAT32:
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| <pre class="host">
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| Command (m for help): t
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| Selected partition 1
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| Hex code (type L to list codes): c
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| Changed system type of partition 1 to c (W95 FAT32 (LBA))
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| </pre>
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| Using the n command again, create a second partition filling up the rest of your card (just accept default values).<br>
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| Now, format the partitions in your card:
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| <pre class="host">
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| sudo mkfs.vfat -n MemoryCard -F 32 /dev/sdb1
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| sudo mkfs.ext2 -L AndroidFS /dev/sdb2
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| </pre>
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| Remove and insert your card again. Your new partitions should be mounted automatically.<br>
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| ===Copying data to the MMC/SD card===
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| Now copy the Android root filesystem to the second partition.
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| <pre class="host">
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| sudo rsync -a $ANDROID_SOURCE/rootfs/ /media/AndroidFS/
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| </pre>
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| Finish by unmounting your MMC/SD partitions:
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| <pre class="host">
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| sudo umount /media/MemoryCard
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| sudo umount /media/AndroidFS
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| </pre>
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| ==Boot setup==
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| The last thing left to do is to specify how the board boots Linux.<br>
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| In the U-boot prompt, make the mmc boot is on second partition of the MMC/SD card
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| <pre class="apf">
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| # setenv mmcroot '/dev/mmcblk0p2 rw'
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| </pre>
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| Now set the kernel command line arguments
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| <pre class="apf">
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| # setenv addmmcargs 'setenv bootargs ${bootargs} root=${mmcroot} rootfstype=${mmcrootfstype} init=\init androidboot.console=ttyS0'
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| # saveenvmtd-utils
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| </pre>
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| ==Debug==
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| <pre class="apf">
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| # mount /dev/mmcblk0p2 /mnt/mmc
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| # strace -f -ff -tt -s 200 chroot /mnt/mmc /init androidboot.console=ttyS0
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| # strace chroot /mnt/mmc /init androidboot.console=ttyS0
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| </pre>
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| ===Tester android avec l'emulateur===
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| [http://developer.android.com/guide/developing/tools/emulator.html emulator]
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| <pre class="host">
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| $ make ARCH=arm goldfish_defconfig
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| $ make ARCH=arm CROSS_COMPILE=../prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi
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| # créer des AVD (Android Virtual Device)
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| $ ~/dev/android-sdk-linux_x86-1.5_r3/tools/android create avd -n APF27-H -t 2 -s 272x480
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| $ ~/dev/android-sdk-linux_x86-1.5_r3/tools/android create avd -n APF27-L -t 2 -s 480x272
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| $ $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
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| </pre>
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| ==Android Root File system==
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| Android emulator has 3 basic images on tools/lib/images directory.
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| * '''ramdisk.img''' is gziped cpio archive. 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. It is made just for the Android and do special things to start up the Android system.
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| * '''system.img''' is a partition image that will be mounted as / and thus contains all system binaries.
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| * '''userdata.img''' is a partition image that can be mounted as /data and thus contains all application-specific and user-specific data.
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| '''/system''' directory has libraries and default system packages (*.apk). /data directory has timezone, cache, and ''ApiDemos.apk'' package.<br>
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| 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.
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| <pre class="apf">
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| ...
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| zygote {
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| exec /system/bin/app_process
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| args {
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| 0 -Xzygote
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| 1 /system/bin
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| 2 --zygote
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| }
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| autostart 1
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| }
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| runtime {
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| exec /system/bin/runtime
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| autostart 1
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| }
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| ...
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| dbus {
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| exec /system/bin/dbus-daemon
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| args.0 --system
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| args.1 --nofork
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| autostart 1
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| }
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| ...
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| </pre>
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