Uboot installation
Warnings
Ubuntu's 3.1 kernel have issue with usb while booting with u-boot. This will case wi-fi not to work.
Be accurate.
Don't insert SD card too early (to avoid device enumeration issues). Folow this guide step by step.
Added by an Ac100 user . I have never modified a wiki before...
Some errors are about where/when you have to use mmcblk1 which is the external sd-card of the AC100 and about where/when you have to use mmcblk0 which is internal sd-card of the AC100. Then it would help to understand if this guide want to install both Android and Ubuntu on internal or external sd-card. I have been unable to install Ubuntu neither Android, so I'll not make corrections to this guide, I'll just point attention to some places where it was impossible to go on without change something respect to the guide, or where I have had doubts.To install android as said in this guide and pointing to http://code.google.com/p/cm-paz00/wiki/InstallGuide?wl=en we have a problem about re-partitioning, here in ac100.wikispaces guide we have partioned mmcblk0 (internal sd-card) , while in the install guide of google.com we are installing in mmcblk1(external sd-card). an example from code.google.com guide: Mount external SD card mount /dev/mmcblk0p1 /tmp/sd while mmcblk0p1 is referred to the internal sd-card
To install ubuntu I can point attention about phase 1 ,just adding that it works and it simply goes in loop ,is this error in the errors mentioned ?? About Phase 2 it's impossible to mount /dev/mmcblk1p7 cause it's the external sd-card and in the external sd-card we have only a primary partition with fat filesystem. an example mount /dev/mmcblk1p7 /mnt/root Where are we installing ubuntu, in internal or external sd-card ??? ----------------------------------------------------------------------------------------------------------------------------------------------------------------- finishing this little adds about errors,I hope someone is able to correct them better then me.
Intro
Main idea is to get SOS partition (64 MB) with boot script and few auxiliary kernels/initrds. Boot script will contain boot menu.
Steps:
1) Start SOS uboot linux
On this step you will run SOS linux from ram. No modifications is made on AC100
2) u-boot installation
On this step you will install u-boot and convert current linux/android installation for u-boot support. In most cases system is bootable after bootloader switch.
3) Repartitioning
This step is needed for next reasons:
- simplify boot process
- fit new android version
- allow dualboot
4) Install android and Install ubuntu
Seems obvious.
Prepare
1) Download sos-uboot
2) Download helpers
3) Download u-boot-tools
u-boot-tools_2013.01.01-4_armhf.deb
4) Download Ubuntu:
DEV NOTE boot_ubuntu.zip contains kernel and initrd from .bootimg file and boot script.
- 13.04 installer and packages (old links are outdated, new links point to ftp.ubuntu-tw.org)
boot_ubuntu-13.04-preinstalled-desktop-armhf+ac100.zip
lubuntu-13.04-preinstalled-desktop-armhf+ac100.tar.gz
- 13.10 installer and packages (old links are outdated, new links point to ftp.ubuntu-tw.org)
boot_ubuntu-saucy-desktop-armhf+ac100-2013-06-19.zip
saucy-preinstalled-desktop-armhf+ac100.tar.gz
- 14.04 installer and packages from 05-Feb-2014
boot_ubuntu-trusty-desktop-armhf+ac100-2014-02-05.zip
trusty-preinstalled-desktop-armhf+ac100.tar.gz
Start SOS uboot linux
On PC:
1) Start AC100 in recovery mode ( ctrl + esc + power )
a) using nvflash
sudo nvflash --bl sos-uboot-r5-2013-11-10.bin --go
a) using tegrapart
tegrarcm --bct=your.bct --bootloader=sos-uboot-r5-2013-11-10.bin --loadaddr=0x108000
AC100 will automatically boot to command prompt
u-boot installation
On this step you change ac100 bootloader to u-boot. Installation script will keep kernel/initrd from 6-th partition (LNX).
On AC100:
1) Start SOS uboot linux
2) Run installation script and follow instructions
./switch-to-uboot
Repartitioning
On this step you will form partition scheme for android and ubuntu dual boot.
On PC:
1) Format first partition on SD cart to fat
2) Unpack ac100-u-boot-helpers.zip to SD card
3) Safely remove SD card from PC
DO NOT INSERT SD CARD IN AC100 BEFORE THIS STEP
4) Start SOS uboot linux
On AC100:
1) Insert SD card
2) Mount SD card
mkdir /mnt/sd mount /dev/mmcblk1p1 /mnt/sd
3) Run repartition
/mnt/sd/apply_partitions_config.sh /mnt/sd/ac100_partitions.cfg /dev/mmcblk0
Setup boot configuration
On this step you will get bootmenu for sos/android/ubuntu, but only sos option will be usable.
On PC:
DO NOT INSERT SD CARD IN AC100 BEFORE THIS STEP
1) Start SOS uboot linux
On AC100:
1) Insert SD card
2) Mount SD card
mkdir /mnt/sd mount /dev/mmcblk1p1 /mnt/sd
3) Mount SOS partition
mkdir /mnt/sos mount /dev/mmcblk0p1 /mnt/sos
4) Copy boot files
cp -r /mnt/sd/boot /mnt/sos
5) Unmount
umount /mnt/sd umount /mnt/sos
6) Power off AC100 (press power button for 8 seconds)
7) Remove SD card from AC100
8) Power on AC100. If you done all right, you will get boot menu
Install android
After this step "Android Recovery" in boot menu became usable.
On AC100:
1) Use Install CWM recovery for CM-10.1 section from http://code.google.com/p/cm-paz00/wiki/InstallGuide?wl=en with following changes:
Don't copy all content of recovery-10.1.img. Copy only kernel and ramdisk:
mkdir /tmp/upacked unzip /tmp/sd/recovery-10.1.img -d /tmp/upacked cp /tmp/upacked/zImage* /tmp/p1/boot/zImage cp /tmp/upacked/initrd*.gz /tmp/p1/boot/initrd.gz
2) Unmount all
3) Powero off
3) Power on. To run recovery select Android Recovery in boot menu
Important: use this command to copy files
cp /tmp/upacked/zImage* /tmp/p1/boot/zImage cp /tmp/upacked/initrd*.gz /tmp/p1/boot/initrd.gz
otherwise file names will not match boot script and recovery will not boot.
Install ubuntu
Phase 1: rootfs installation
On PC:
1) Format first partition on SD card to fat
2) Copy to SD card
3) Unpack to SD card
https://dl.dropboxusercontent.com/u/40761340/Test/boot_ubuntu.zip
4) Safely remove SD card
On AC100:
1) Insert SD card
2) Power on
3) Select installation from SD (fat), follow instructions, don't pay much attantion to errors ;)
Phase 2: prepare for u-boot
On PC:
1) Format first partition on SD card to fat
2) Copy to SD card
https://launchpadlibrarian.net/139556634/u-boot-tools_2013.01.01-4_armhf.deb
3) Unpack to SD card
https://dl.dropboxusercontent.com/u/40761340/Test/ac100-u-boot-helpers.zip
4) Safely remove SD card from PC
On AC100:
1) Start SOS uboot linux
2) Insert SD card
3) Mount SD card
mkdir /mnt/sd mount /dev/mmcblk1p1 /mnt/sd
4) Mount target partition (p7 a.k.a UDB)
mkdir /mnt/root mount /dev/mmcblk1p7 /mnt/root
5) Copy fixed database for flash-kernel
cp /mnt/sd/all.db.fixed /mnt/root/usr/share/flash-kernel/db/all.db
6) Install u-boot tools and update initramfs
cp /mnt/sd/u-boot-tools_2013.01.01-4_armhf.deb /mnt/root/tmp /mnt/sd/help.sh mount_vfs chroot /mnt/root export PATH=/sbin:/usr/sbin:/bin:/usr/bin dpkg -i /tmp/u-boot-tools_2013.01.01-4_armhf.deb update-initramfs -u exit /mnt/sd/help.sh umount_vfs
7) Unmount all
umount /mnt/sd umount /mnt/root
8) Power off
9) Power on. Choose "Ubuntu" in boot menu. Installation will continue.