【学习Sitara™ AM335x】- Beaglebone环境的搭建方法

chenzhufly

【学习Sitara™ AM335x】- Beaglebone环境的搭建方法 [复制链接]

Basic Requirements

ARM Cross Compiler

1. Ubuntu (11.04 (Natty Narwhal) minimum): sudo apt-get install gcc-arm-linux-gnueabi
   Linaro: https://launchpad.net/linaro-toolchain-binaries

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Bootloader

1. Das U-Boot – the Universal Boot Loader http://www.denx.de/wiki/U-Boot
   Source – http://git.denx.de/?p=u-boot.git;a=summary

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Linux Kernel

1. Linus's Mainline tree: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=summary
   Linux omap tree: http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap.git
   Arago Project TI Staging tree: http://arago-project.org/git/projects/?p=linux-am33x.git;a=shortlog;h=refs/heads/v3.2-staging

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ARM based rootfs

1. Debian Squeeze: http://www.debian.org/

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Bootloader

Das U-Boot – the Universal Boot Loader http://www.denx.de/wiki/U-Boot

U-Boot Download:
Download U-Boot via git:

1. git clone git://git.denx.de/u-boot.git
   cd u-boot/
   git checkout v2012.10 -b tmp

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U-Boot Patches:

1. wget https://raw.github.com/RobertCNelson/Bootloader-Builder/master/patches/v2012.10/0001-enable-bootz-support.patch
   wget https://raw.github.com/RobertCNelson/Bootloader-Builder/master/patches/v2012.10/0002-am33xx-Enable-DDR3-for-DDR3-version-of-beaglebone.patch
   patch -p1 < 0001-enable-bootz-support.patch
   patch -p1 < 0002-am33xx-Enable-DDR3-for-DDR3-version-of-beaglebone.patch

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U-Boot Configure and Build:
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- distclean
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- am335x_evm_config
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
Linux Kernel

Linux Build Script:

1. git clone git://github.com/RobertCNelson/linux-dev.git
   cd linux-dev/
   git checkout origin/am33x-v3.2 -b am33x-v3.2

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For Mainline v3.6.x (in development, limited cape support)

1. git checkout origin/am33x-v3.6 -b am33x-v3.6

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Run Build Script:

1. ./build_kernel.sh

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The kernel zImage and modules will be under the deploy directory.

Debian Squeeze 6.0.6 (armel based) Root File System

Default User: debian
Password: temppwd

Root User: root
Root Password: root

1. wget -c http://rcn-ee.net/deb/minfs/squeeze/debian-6.0.6-minimal-armel-2012-10-22.tar.xz

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verify the image with:

1. md5sum debian-6.0.6-minimal-armel-2012-10-22.tar.xz
   97a4717d95c72d3c9d931a39a3aa58c6  debian-6.0.6-minimal-armel-2012-10-22.tar.xz

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Extract Image:

1. tar xJf debian-6.0.6-minimal-armel-2012-10-22.tar.xz

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Debian Wheezy (snapshot) (armhf based) Root File System

Default User: debian
Password: temppwd

Root User: root
Root Password: root

1. wget -c http://rcn-ee.net/deb/minfs/wheezy/debian-wheezy-minimal-armhf-2012-10-22.tar.xz

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verify the image with:

1. md5sum debian-wheezy-minimal-armhf-2012-10-22.tar.xz
   ff409aa856b4b2ab86a6c8126a349926  debian-wheezy-minimal-armhf-2012-10-22.tar.xz

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Extract Image:

1. tar xJf debian-wheezy-minimal-armhf-2012-10-22.tar.xz

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Ubuntu 12.10 (Quantal) (armhf based) Root File System

Default User: ubuntu
Password: temppwd

1. wget -c http://rcn-ee.net/deb/minfs/quantal/ubuntu-12.10-minimal-armhf-2012-10-22.tar.xz

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verify the image with:

1. md5sum ubuntu-12.10-minimal-armhf-2012-10-22.tar.xz
   442c3a26af8e80ecf44ea470f5dcacd5  ubuntu-12.10-minimal-armhf-2012-10-22.tar.xz

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Extract Image:

1. tar xJf ubuntu-12.10-minimal-armhf-2012-10-22.tar.xz

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Setup microSD card

For these instruction, we are assuming: DISK=/dev/mmcblk0, "sudo fdisk -l" is useful for determining the device id..

1. export DISK=/dev/mmcblk0

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Erase microSD card:

1. sudo parted --script ${DISK} mklabel msdos

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Setup Boot Partition:

1. sudo fdisk ${DISK} << __EOF__
   n
   p
   1
   +64M
   t
   e
   p
   w
   __EOF__

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Set Boot Flag

1. sudo parted --script ${DISK} set 1 boot on

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Format Boot Partition as vfat:

1. DISK=/dev/mmcblk0
   sudo mkfs.vfat -F 16 ${DISK}p1 -n boot
   (or)
   DISK=/dev/sdX
   sudo mkfs.vfat -F 16 ${DISK}1 -n boot

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Setup Root File System Partition:

1. sudo fdisk ${DISK} << __EOF__
   n
   p
   2
   w
   __EOF__

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Format rootfs as ext4:

1. DISK=/dev/mmcblk0
   sudo mkfs.ext4 ${DISK}p2 -L rootfs
   (or)
   DISK=/dev/sdX
   sudo mkfs.ext4 ${DISK}2 -L rootfs

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Mount the Boot & Root File System Partitions:

Install Bootloaders:

Copy MLO to the boot partition

1. sudo cp -v ./u-boot/MLO /media/boot/

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Copy u-boot.img to the boot partition

1. sudo cp -v ./u-boot/u-boot.img /media/boot/

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uEnv.txt v3.2.x based bootscript
Create U-Boot v3.2.x "uEnv.txt" boot script: (nano uEnv.txt)

1. uEnv.txt
   console=ttyO0,115200n8
   mmcroot=/dev/mmcblk0p2 ro
   mmcrootfstype=ext4 rootwait fixrtc
   mmc_load_image=fatload mmc 0:1 0x80300000 zImage
   mmc_load_initrd=fatload mmc 0:1 0x81600000 initrd.img; setenv initrd_size ${filesize}
   mmcargs=setenv bootargs console=${console} root=${mmcroot} rootfstype=${mmcrootfstype}
   #Just: zImage
   xyz_mmcboot=run mmc_load_image; echo Booting from mmc ...
   loaduimage=run xyz_mmcboot; run mmcargs; bootz 0x80300000
   #zImage and initrd
   #xyz_mmcboot=run mmc_load_image; run mmc_load_initrd; echo Booting from mmc ...
   #loaduimage=run xyz_mmcboot; run mmcargs; bootz 0x80300000 0x81600000:${initrd_size}

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uEnv.txt v3.6.x device tree based bootscript
Create Device Tree v3.6.x "uEnv.txt" boot script: (nano uEnv.txt)

1. uEnv.txt
   initrd_high=0xffffffff
   fdt_high=0xffffffff
   dtb_file=am335x-bone.dtb
   console=ttyO0,115200n8
   mmcroot=/dev/mmcblk0p2 ro
   mmcrootfstype=ext4 rootwait fixrtc
   mmc_load_image=fatload mmc 0:1 0x80300000 zImage
   mmc_load_initrd=fatload mmc 0:1 0x81600000 initrd.img; setenv initrd_size ${filesize}
   mmc_load_dtb=fatload mmc 0:1 0x815f0000 /dtbs/${dtb_file}
   mmcargs=setenv bootargs console=${console} root=${mmcroot} rootfstype=${mmcrootfstype}
   #Just: zImage
   xyz_mmcboot=run mmc_load_image; run mmc_load_dtb; echo Booting from mmc ...
   loaduimage=run xyz_mmcboot; run mmcargs; bootz 0x80300000 - 0x815f0000
   #zImage and initrd
   #xyz_mmcboot=run mmc_load_image; run mmc_load_initrd; run mmc_load_dtb; echo Booting from mmc ...
   #loaduimage=run xyz_mmcboot; run mmcargs; bootz 0x80300000 0x81600000:${initrd_size} 0x815f0000

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Copy uEnv.txt to the boot partition:

1. sudo cp -v ./uEnv.txt /media/boot/

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Note: This repo tree is under active development, so the Kernel version can change on a daily basis...
Copy Kernel zImage:

1. sudo cp -v ./linux-dev/deploy/3.2.33-psp26.zImage /media/boot/zImage

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Copy Kernel dtbs (Device Tree v3.6.x):

1. sudo mkdir -p /media/boot/dtbs/
   sudo tar xfv ./linux-dev/deploy/3.6.0-bone0-dtbs.tar.gz -C /media/boot/dtbs/

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Copy Root File System:

1. sudo tar xfvp ./*-*-minimal-arm*-*/armel-rootfs-*.tar -C /media/rootfs/

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Copy Kernel modules:

1. sudo tar xfv ./linux-dev/deploy/3.2.33-psp26-modules.tar.gz -C /media/rootfs/

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Tweak "/etc/fstab", the defaults should work for most boards:

1. sudo nano /media/rootfs/etc/fstab

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Edit:

1. /etc/fstab
   /dev/mmcblk0p2   /           auto   errors=remount-ro   0   1
   /dev/mmcblk0p1   /boot/uboot auto   defaults            0   0

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Enable Networking on Bootup:
Note: Boards without ethernet interfaces will have delays on bootup.

1. sudo nano /media/rootfs/etc/network/interfaces

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From: (uncomment)

1. /etc/network/interfaces
   #auto eth0
   #iface eth0 inet dhcp

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To:

1. /etc/network/interfaces
   auto eth0
   iface eth0 inet dhcp
   Enable Serial Login:

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Debian:

1. sudo nano /media/rootfs/etc/inittab

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edit last line:

1. /etc/inittab
   from: T2:23:respawn:/sbin/getty -L  115200 vt102
   to: T2:23:respawn:/sbin/getty -L ttyO0 115200 vt102

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Ubuntu:

1. sudo nano /media/rootfs/etc/init/serial.conf

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Add:

1. /etc/init/serial.conf
   start on stopped rc RUNLEVEL=[2345]
   stop on runlevel [!2345]
   respawn
   exec /sbin/getty 115200 ttyO0

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Remove microSD card:

1. sync
   sudo umount /media/boot
   sudo umount /media/rootfs

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FAQ

CircuitCo LCD3 Backlight:
Turn on Backlight:

1. i2cset -f -y 1 0x24 0x07 0x09
   i2cset -f -y 1 0x24 0x08 0x60

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CircuitCo LCD3/LCD7 TouchScreen:
Add to /etc/modules:

1. /etc/modules
   fbcon
   ti_tscadc

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[ 本帖最后由 chenzhufly 于 2012-11-14 19:07 编辑 ]

爱JustdoIT

感谢楼主，很好的东西。

andylianggq

正在学习中。。。。。。。。