Cubietruck制作可启动SD卡（只测试uboot）

手上有个128M的sd卡，所以就只测试uboot

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下载uboot代码https://github.com/linux-sunxi/u-boot-sunxi.git，版本号v2014.04-rc2

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编译uboot

laptop:~$make Cubietruck_config

laptop:~$make CROSS_COMPILE=arm-linux-gnueabi- -j4

注意：

1.Cubietruck首字母大写

2.make CROSS_COMPILE=arm-linux-gnueabi- -j4中-j4表示job4（四核）

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启动代码写入SD卡

uboot父目录创建shell脚本writesdcard

#! /bin/sh

export card=/dev/sdb

export p=""

#To be on safe side erase the first part of your SD Card.

dd if=/dev/zero of=${card} bs=1M count=1

#Bootloader

dd if=u-boot-sunxi/spl/sunxi-spl.bin of=${card} bs=1024 seek=8

dd if=u-boot-sunxi/u-boot.img of=${card} bs=1024 seek=40

保存之后添加权限并(sudo)执行脚本

注意：

1.

export card=/dev/sdb

export p=""

是对应于USB插入的读卡器，详细内容参见http://linux-sunxi.org/Bootable_SD_card

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测试

1

SD卡插入Cubietruck

正确连接usb-ttl数据线——（黑接GND）（绿接RX）（白接TX）

2

打开虚拟窗口

laptop:~screen /dev/ttyUSB0 115200

3

连接Cubietruck电源

U-Boot SPL 2014.04-rc2-10390-g96510e1 (Apr 07 2014 - 21:24:32)

Board: Cubietruck

DRAM: 2048 MiB

CPU: 960000000Hz, AXI/AHB/APB: 3/2/2

spl: not an uImage at 1600

U-Boot 2014.04-rc2-10390-g96510e1 (Apr 07 2014 - 21:24:32) Allwinner Technology

CPU: Allwinner A20 (SUN7I)

Board: Cubietruck

I2C: ready

DRAM: 2 GiB

MMC: SUNXI SD/MMC: 0

*** Warning - bad CRC, using default environment

In: serial

Out: serial

Err: serial

Net: dwmac.1c50000

Warning: failed to set MAC address

Hit any key to stop autoboot: 0

** No partition table - mmc 0 **

** No partition table - mmc 0 **

** No partition table - mmc 0 **

** No partition table - mmc 0 **

** No partition table - mmc 0 **

** No partition table - mmc 0 **

** No partition table - mmc 0 **

** No partition table - mmc 0 **

** No partition table - mmc 0 **

sun7i#

测试命令led all toggle

sun7i#led all toggle

观察led

成功！

参考：
http://linux-sunxi.org/Bootable_SD_card http://linux-sunxi.org/Cubieboard/TTL http://linux-sunxi.org/Toolchain http://linux-sunxi.org/U-Boot#Compilation