Ubuntu通过串口发送文件给u-boot

Platform: IMX6Q

Windows可以通过默认的串口终端发送给u-boot，而在ubuntu上默认的minicom无此功能，不过可以通过c-kermit实现。

PS: 红色字体代表需要输入的命令。

1. 安装 c-kermit
#sudo apt-get install ckermit

2. 测试
[kris@ecovacs:~/yocto_3.14.28-1.0.1]$ kermit
C-Kermit 9.0.302 OPEN SOURCE:, 20 Aug 2011, for Linux+SSL+KRB5 (64-bit)
 Copyright (C) 1985, 2011,
  Trustees of Columbia University in the City of New York.
Type ? or HELP for help.
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>


如果提示?SET SPEED has no effect without prior SET LINE
那么chmod 777 /dev/ttyUSB0


3. 配置
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>set line /dev/ttyUSB0
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>set speed 115200
/dev/ttyUSB0, 115200 bps
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>set flow-control none
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>

ps: 本平台使用ttyUSB0, 115200


4. 连接板子u-boot
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>connect
复位板子，然后PC上按任一键就能进入u-boot命令行了。

Connecting to /dev/ttyUSB0, speed 115200
 Escape character: Ctrl-\ (ASCII 28, FS): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options.
----------------------------------------------------


U-Boot 2009.08-dirty (12月 22 2015 - 14:34:22)

CPU: Freescale i.MX6 family TO1.5 at 792 MHz
Thermal sensor with ratio = 174
Temperature:   36 C, calibration data 0x54d4c369
mx6q pll1: 792MHz
mx6q pll2: 528MHz
mx6q pll3: 480MHz
mx6q pll8: 50MHz
ipg clock     : 66000000Hz
ipg per clock : 66000000Hz
uart clock    : 80000000Hz
cspi clock    : 60000000Hz
ahb clock     : 132000000Hz
axi clock   : 264000000Hz
emi_slow clock: 132000000Hz
ddr clock     : 528000000Hz
usdhc1 clock  : 198000000Hz
usdhc2 clock  : 198000000Hz
usdhc3 clock  : 198000000Hz
usdhc4 clock  : 198000000Hz
nfc clock     : 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63015 [POR ]
Boot Device: SD
I2C:   ready
DRAM:   2 GB
MMC:   FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2
*** Warning - bad CRC or MMC, using default environment

In:    serial
Out:   serial
Err:   serial
Found PFUZE100! deviceid=10,revid=21
Net:   got MAC address from IIM: 00:00:00:00:00:00
FEC0 [PRIME]
Hit any key to stop autoboot:  0
MX6Q TEK U-Boot >

5. 加载文件到内存
比如一个文件要加载到0x907000
MX6Q TEK U-Boot > loadb 0x907000
## Ready for binary (kermit) download to 0x00907000 at 115200 bps...

然后按
ctrl + \
然后再按 connect 回到c-kermit

再发送文件：
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>send /home/kris/ddr-stress-test-mx6dq.bin
发送完成会自动回到c-kermit界面，然后外面再连到u-boot
(/home/kris/yocto_3.14.28-1.0.1/) C-Kermit>connect
Connecting to /dev/ttyUSB0, speed 115200
 Escape character: Ctrl-\ (ASCII 28, FS): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options.
----------------------------------------------------
## Total Size      = 0x000160e2 = 90338 Bytes
## Start Addr      = 0x00907000
MX6Q TEK U-Boot >

接着就可以运行文件了
MX6Q TEK U-Boot > go 0x00907000
## Starting application at 0x00907000 ...


参考：

http://blog.chinaunix.net/uid-23121085-id-2546601.html

http://blog.csdn.net/g1036583997/article/details/38497941