TI的AM3359的sd卡分区以及sd卡启动说明
【1】sd 卡分区： ti提供了自己的分区shell脚本create-sdcard.sh 脚本目录在：ti-sdk-am335x-evm-05.06.00.00/bin/
（1）插入sd卡（若是笔记本sd卡槽，不显示sd卡，可能是因为sd卡走的是PCI总线而不是usb，这时需要一个读卡器）
（2）执行sudo ./create-sdcard.sh
（3）弹出以下信息。按如下标示进行分区即可（红色为自己填写信息），此处分区分了两个，一个boot，一个rootfs ################################################################################
This script will create a bootable SD card from custom or pre-built binaries.
The script must be run with root permissions and from the bin directory of the SDK
Example: $ sudo ./create-sdcard.sh
Formatting can be skipped if the SD card is already formatted and partitioned properly.
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Availible Drives to write images to:
# major minor size name 1: 8 16 3813376 sdb
Enter Device Number: 1（此处填写分区设备描述符）
sdb was selected
Checking the device is unmounted
sdb1 sdb2 sdb3 72261 3727080
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Detected device has 2 partitions already
Re-partitioning will allow the choice of 2 or 3 partitions
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Would you like to re-partition the drive anyways [y/n] : y
Now partitioning sdb ...
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Select 2 partitions if only need boot and rootfs (most users) Select 3 partitions if need SDK & CCS on SD card. This is usually used by device manufacturers with access to partition tarballs.
****WARNING**** continuing will erase all data on sdb
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Number of partitions needed [2/3] : 2（分区数量）
Now partitioning sdb with 2 partitions...
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Now making 2 partitions
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记录了1024+0 的读入 记录了1024+0 的写出 1048576字节(1.0 MB)已复制，13.1196 秒，79.9 kB/秒 Disk /dev/sdb doesn't contain a valid partition table DISK SIZE - 3904897024 bytes Checking that no-one is using this disk right now ... OK
Disk /dev/sdb: 474 cylinders, 255 heads, 63 sectors/track
sfdisk: ERROR: sector 0 does not have an msdos signature /dev/sdb: unrecognized partition table type Old situation: No partitions found New situation: Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System /dev/sdb1 * 0+ 8 9- 72261 c W95 FAT32 (LBA) /dev/sdb2 10 473 464 3727080 83 Linux /dev/sdb3 0 - 0 0 0 Empty /dev/sdb4 0 - 0 0 0 Empty Successfully wrote the new partition table
Re-reading the partition table ...
If you created or changed a DOS partition, /dev/foo7, say, then use dd(1) to zero the first 512 bytes: dd if=/dev/zero of=/dev/foo7 bs=512 count=1 (See fdisk(8).)
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Partitioning Boot
################################################################################ mkfs.vfat 3.0.7 (24 Dec 2009)
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Partitioning rootfs
################################################################################ mke2fs 1.41.11 (14-Mar-2010) 文件系统标签=rootfs 操作系统:Linux 块大小=4096 (log=2) 分块大小=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 233392 inodes, 931770 blocks 46588 blocks (5.00%) reserved for the super user 第一个数据块=0 Maximum filesystem blocks=956301312 29 block groups 32768 blocks per group, 32768 fragments per group 8048 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736
正在写入inode表: 完成 Creating journal (16384 blocks): 完成 Writing superblocks and filesystem accounting information: 完成
This filesystem will be automatically checked every 38 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
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Partitioning is now done Continue to install filesystem or select 'n' to safe exit
**Warning** Continuing will erase files any files in the partitions
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Would you like to continue? [y/n] : n
boot和rootfs分区自动挂载到/media/
【2】环境搭建，生成bootloader和编译内核
ti提供的资料中会有一个叫ti-sdk-am335x-evm-05.04.01.00-Linux-x86-Install文件，这个里面有必要的工具包（minicom，filesystem，nfs，tftp，uboot，load uboot script）
打开终端：
（1）./ti-sdk-am335x-evm-05.04.01.00-Linux-x86-Install 将会在主目录下生成名为ti-sdk-am335x-evm-05.04.01.00 cd ti-sdk-am335x-evm-05.04.01.00/ sudo ./setup.sh(注意：系统不是10.04，则vim /ti-sdk-am335x-evm-05.04.01.00/setup.sh,将第十四行用#屏蔽掉。#$cwd/bin/setup-host-check.sh)。 遇到选项回车默认即可。
（2）gedit ~/.bashrc 在打开的文件末尾添加如下：
export PATH=/home/share/ti-sdk-am335x-evm-05.04.01.00/linux-devkit/bin:$PATH
export ARCH=arm
export CROSS_COMPILE=arm-arago-linux-gnueabi-
保存退出 source ~/.bashrc(使其生效)
（3）编译u-boot cd ti-sdk-am335x-evm-05.04.01.00/board-support/u-boot-2011.09-psp04.06.00.07/ make o=am335x am335x_evm 在am335x中会生成第一级bootloader MLO和第二级bootloader u-boot.img
（4）编译内核 cd ti-sdk-am335x-evm-05.04.01.00/board-support/linux-3.2-psp04.06.00.07.sdk/
依次执行如下命令：
make mrproper
make tisk_am335x-evm_defconfig
make （生成uImage）
uImage 在arch/arm/boot/下生成了uImage(内核)
（5） 将MLO，u-boot.img,uImage拷贝到SD卡的boot分区 将targetNFS里的所有文件拷贝到rootfs分区
将sd卡插入开发板上电。
