ARCH LINUX WITH MAINLINE KERNEL FOR TOSHIBA AC100 [paz00 / dynabookaz]

ac100-kernel.md

ARCH LINUX WITH MAINLINE KERNEL FOR TOSHIBA AC100

all u need

• 1-2 hours of your life
• build envirment for the Kernel
• device with Ubuntu and nvflash
• AC100
• mini-usb cabel
• usb-stick >512MB

build the kernel

1. setup the build enviorment

   • create the work directory:

     mkdir -p ~/ac100/output_files

2. get the kernel source

   • get the sources:

     curl -LO https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.5.2.tar.xz

     cd linux-4.5.2

3. build the kernel

   • genrate the config

     make tegra_defconfig ARCH=arm

   • adjust the config for:

     1. Kernel low-level debugging options

        in Kernel hacking

        to OFF

     2. USB Video Class

        in Device drivers --> Multimedia support --> Media USB Adapters

        to MODULE

     3. USB NETWORK Device [only if like to use anadapter] you will find the availbe Modules under

        in Device drivers --> Network device support --> USB Network Adapters

        to MODULE

     make menuconfig ARCH=arm

   • build zIMAGE, modules, dtb

     make zImage modules dtbs INSTALL_MOD_STRIP=1 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

   • build install-modules

     make modules_install INSTALL_MOD_PATH=../output_files INSTALL_MOD_STRIP=1 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

   • copy dtb and zImage to the output_files directory

     cp arch/arm/boot/dts/tegra20-paz00.dtb ../output_files

     cp arch/arm/boot/zImage ../output_files

4. make output flashable

   • change into output_files directory

     cd ../output_files

   • create needed folders

     mkdir boot usr

   • move lib into usr [to avoid breaks of arch]

     mv lib usr

   • move zImage and dtb into boot

     mv zImage boot

     mv tegra20-paz00.dtb boot

   • create boot.cmd

     
       cat <<'EOF' > ~/ac100/output_files/boot/boot.cmd
       setenv bootargs 'root=/dev/mmcblk0p1 rootfstype=ext4 rootwait'
       ext2load mmc 0:1 0x1000000 /boot/zImage
       ext2load mmc 0:1 0x2000000 /boot/tegra20-paz00.dtb
       bootz 0x1000000 - 0x2000000
       EOF
       

   • create directory etc

     mkdir etc

   • add fstab

     
       cat <<'EOF' > ~/ac100/output_files/etc/fstab
       /dev/mmcblk0p1  /   ext4    rw,noatime,commit=30,barrier=1,data=ordered    0    0
       EOF
       

   • pack the files

     tar cf kernel.tar boot usr etc

5. prepare pen drive

   • copy kernel.tar to pen drive

     cp ~/ac100/output_files/kernel.tar < mountpoint of the pen drive >

   • get Arch Linux filesystem for Tegra systems

     curl -o < mountpoint of the pen drive > http://archlinuxarm.org/os/ArchLinuxARM-trimslice-latest.tar.gz

6. boot AC100 into recovery mode

   • press ctrl + esc + Power

7. install on the flash host nvflash

   curl -O /tmp https://phablet-paz00.googlecode.com/files/nvflash_20110628-2_all.deb ; sudo dpkg -i nvflash_20110628-2_all.deb

8. connect AC100 with your flash Host

9. get and boot a minimal SOSUBOOT

   • on the flash Host

     curl -O /tmp https://dl.dropboxusercontent.com/u/40761340/Test/sos-uboot-r5-2013-11-10.bin nvflash --bl sos-uboot-r5-2013-11-10.bin --go

   • on the AC100

     ./switch-to-uboot

10. prepare the AC100

    • create one new partions [maybe u like to backup the old once]

      
        parted /dev/mmcblk0 mklabel gpt
        parted /dev/mmcblk0 -s mkpart primary 7168s '100%'
        parted /dev/mmcblk0 -s name 1 UDB
        

    • create filesystem

      mkfs.ext4 /dev/mmcblk0p1

11. Install Kernel and OS

    • create mount point

      mkdir /target mkdir /source

    • mount the emmc

      mount -t ext4 /dev/mmcblk0p1 /target

    • inserte the stick and mount it

      mount -t vfat /dev/sda1 /source

    • change into directory /target

      cd /target

    • extract the ARCH Linux filesystem

      gzip -dc /source/ArchLinuxARM-trimslice-latest.tar.gz | tar xp

    • erase /boot to add new builded kernel for the AC100

      rm -rf boot/*

    • unpack kernel.tar

      tar xf /source/kern.tar

    • change into the /boot directory

      cd /target/boot

    • make the kernel bootable

      mkimage -A arm -O linux -T script -C none -a 0 -e 0 -n "ubootscript" -d boot.cmd boot.scr

    • sync for safety

      sync

    • unmount the pen drive and the emmc

      cd /; umount /target; umount /source

enjoy Arch Linux and the mainline kernel on your AC100 \o/

Source:

AC100 wiki
dev.cutecolors.jp.net
UNicksDaemon
ddevnet.net

Good morning,
After some time, I tried to update the system.
I have locked the linux-armv7, libdrm and mesa packages in the pacman.conf file.....but every time I run Syu, the update always results in: kernel panic.
Am I forgetting some steps or? Does anyone have a stable image to share?

Greetings in advantage.