Odroid-xu 板环境搭建
1.
Boot Sequence
Upon power on the board will search for the boot media. It will perform the following:
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1) iROM (Code inside the SoC) will attempt to read the boot media at the first 512 bytes of it. On those first 512 bytes fwbl1 should exist.
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2) fwbl1 will load bl2 (SPL) that is part of the U-boot.
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3) bl2 will load U-boot.
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4) U-Boot will do whats left, such as handle TrustZone, load kernel image if setted.
fwbl1
This blob is the first thing that CPU will call, we don't have much information on it since its provided by Samsung. Position on SD: 1
bl2
This is the SPL, part of the U-Boot, upon building U-Boot you'll have the mkspl program what will extract it from the u-boot.bin Position on SD: 31
u-boot.bin
This is the U-Boot itself built. For more information about U-Boot please check their website:http://www.denx.de/wiki/U-BootPosition on SD: 63
TrustZone Software
This is the blob done by Samsung/ARM to support Trustzone platform. Position on SD: 719
Default Env
The default env provided in U-Boot will attempt the following:
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1) Load boot.ini script from the first FAT type partition from the boot media.
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2) Load kernel from its on media/ramdisk position (This is the Android Boot)
Boot media sector map for Odroid-xu
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Odroid-xu has Min 8Gbyte eMMC or MicroSD memory card for system area.
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FAT partition to calculate the remaining blocks to create the partition.
| Area Name | Size in bytes | From(sector #) | To(Sector #) | Partition Name |
|---|---|---|---|---|
| FAT32 for Storage | Up to 4GB | 6979920 | remaining blocks | mmcblk0p1 |
| EXT4 for Android cache | 256MB | 6446520 | 6979919 | mmcblk0p4 |
| EXT4 for Android userdata | 2GB | 2240280 | 6446519 | mmcblk0p3 |
| EXT4 for Android system | 1GB | 137160 | 2240179 | mmcblk0p2 |
| Reserved | 58MB | 17647 | 137159 | |
| Kernel | 8MB | 1263 | 17646 | |
| u-boot environment | 16KB | 1231 | 1262 | |
| TrustZone SW | 256KB | 719 | 1230 | |
| u-boot | 328KB | 63 | 718 | |
| bl2 | 16KB | 31 | 62 | |
| fwbl1 | 15KB | 1 | 30 | |
| Partition table / MBR | 512 | 0 | 0 |
* “Sector number - 1” in SD map is used in the eMMC map.
Download Xubuntu Desktop 14.04 LTS for XU
http://odroid.in/ubuntu_14.04lts/
OS Image flashing tool for
Download and unzip this file.
http://dn.odroid.com/DiskImager_ODROID/Win32DiskImager-odroid-v1.3.zip
download 后烧录成功
SD 卡的安装和扩容
扩充前
root@odroid-desktop:~# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mmcblk0p2 3150076 2132236 857792 72% / none 4 0 4 0% /sys/fs/cgroup udev 892784 4 892780 1% /dev tmpfs 178812 1000 177812 1% /run none 5120 8 5112 1% /run/lock none 894060 72 893988 1% /run/shm none 102400 12 102388 1% /run/user /dev/mmcblk0p1 102182 7714 94468 8% /media/boot
默认的镜像剩余大小固定，如使用8/16G SD card时需要对没有分配的空间进行扩容
1. 先把烧录上述image的 SD card 通过USB card reader插入到一个Linux host，然后 fdisk 删除并创建分区
Disk /dev/sdb: 7948 MB, 7948206080 bytes 245 heads, 62 sectors/track, 1021 cylinders, total 15523840 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003f9f7 Device Boot Start End Blocks Id System /dev/sdb1 4096 208895 102400 c W95 FAT32 (LBA) /dev/sdb2 208896 6610943 3201024 83 Linux root@odroid-desktop:~# fdisk /dev/sdb 208896 为First sector
sudo fdisk /dev/mmcblk0 p (see starting block of p2, e.g. 266240) d (delete) 2 (partition 2) n (new) p (primary) 2 (partition 2) 266240 (starting block) <enter> (it will take ending block as end partition, so you have entire space) w (write partitions)
2. 使用该SD卡启动并做resize2fs
oot@odroid-desktop:~# resize2fs /dev/mmcblk0p2 resize2fs 1.42.9 (4-Feb-2014) Filesystem at /dev/mmcblk0p2 is mounted on /; on-line resizing required old_desc_blocks = 1, new_desc_blocks = 1 The filesystem on /dev/mmcblk0p2 is now 3863424 blocks long. root@odroid-desktop:~# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mmcblk0p2 15213368 2139708 12426548 15% / none 4 0 4 0% /sys/fs/cgroup udev 892784 4 892780 1% /dev tmpfs 178812 1012 177800 1% /run none 5120 0 5120 0% /run/lock none 894060 72 893988 1% /run/shm none 102400 12 102388 1% /run/user /dev/mmcblk0p1 102182 7714 94468 8% /media/boot root@odroid-desktop:~# fdisk -l
VNC Server 安装
安装之前需要设置代理如：
export http_proxy=http://172.16.2.187:8080
参考http://forum.odroid.com/viewtopic.php?f=52&t=4489
http://www.linuxidc.com/Linux/2014-09/106805.htm
apt-get install x11vnc
x11vnc -storepasswd 12345 /etc/x11vnc.pass 设置密码为12345
命令运行或者让自动启动
x11vnc -display :0 -auth /var/run/lightdm/root/:0 -forever -bg -rfbauth /etc/x11vnc.pass -rfbport 5900
或 vi /etc/init/x11vnc.conf
start on login-session-start
script
x11vnc -display :0 -auth /var/run/lightdm/root/:0 -forever -bg -o /var/log/x11vnc.log -rfbauth /etc/x11vnc.pass -rfbport 5900
end script
reboot
Step-by-Step guide to building a odroid-xu Kernel
Download the cross tool chain package
[ http://dn.odroid.com/ODROID-XU/compiler/arm-eabi-4.6.tar.gz ]
Copy the cross tool package to /opt/toolchains
If the '/opt/toolchains' directory does not exist in host pc, then create the directory.
# sudo mkdir /opt/toolchains # sudo cp arm-eabi-4.6.tar.gz /opt/toolchains # cd /opt/toolchains # sudo tar zxvf arm-eabi-4.6.tar.gz
Uncompress the cross tool with tar command
# cd /opt/toolchains # sudo tar xvfz arm-eabi-4.6.tar.gz
Add Path in your environment file
Modify your ~/.bashrc file to add a new path with editor (gedit or vi)
export ARCH=arm
export PATH=${PATH}:/opt/toolchains/arm-eabi-4.6/bin
export CROSS_COMPILE=arm-eabi-
To apply this change, login again or restart the .bashrc
# source ~/.bashrc
Check the tool-chain path to see if it is set up correctly or not.
# arm-eabi-gcc -v Using built-in specs. COLLECT_GCC=arm-eabi-gcc COLLECT_LTO_WRAPPER=/opt/toolchain/arm-eabi-4.6/bin/../libexec/gcc/arm-eabi/4.6.x-google/lto-wrapper Target: arm-eabi Configured with: /tmp/android-15472/src/build/../gcc/gcc-4.6/configure --prefix=/usr/local --target=arm-eabi --host=x86_64-linux-gnu --build=x86_64-linux-gnu --with-gnu-as --with-gnu-ld --enable-languages=c,c++ --with-gmp=/tmp/android-15472/obj/temp-install --with- mpfr=/tmp/android-15472/obj/temp-install --with-mpc=/tmp/android-15472/obj/temp-install --without-ppl --without-cloog --disable-libs sp --enable-threads --disable-nls --disable-libmudflap --disable-libgomp --disable-libstdc__-v3 --disable-sjlj-exceptions --disable- shared --disable-tls --disable-libitm --with-float=soft --with-fpu=vfp --with-arch=armv5te --enable-target-optspace --with-abi=aapcs --with-gcc-version=4.6 --with-binutils-version=2.21 --with-gmp-version=4.2.4 --with-mpfr-version=2.4.1 --with-gdb-version=7.3.x --w ith-arch=armv5te --with-sysroot=/tmp/android-15472/install/sysroot --with-prefix=/tmp/android-15472/install --with-gold-version=2.21 --enable-gold --disable-gold --disable-multilib --program-transform-name='s&^&arm-eabi-&' Thread model: single gcc version 4.6.x-google 20120106 (prerelease) (GCC)
Source code download
参考
http://odroid.com/dokuwiki/doku.php?id=en:odroid-xu