2011-05-24 22:33:29 ERROR:down load uboot.ldr file from UART MODE on BF518 EZ BOARD
lin cheng (CHINA)
Message: 100817
I have a bf518 ez board ,with no UBOOT .I down load uboot.ldr file from UART MODE,but the terminal has no response.PLS help me ? Following is my operation.
step 1: change the boot mode sw1 to 7:Boot from UART0 host;
step 2: connect the serial line;
step3 :test the serail status
[cheng@localhost can]$ sudo kermit -l /dev/ttyS0 -b 57600 -C connect
Connecting to /dev/ttyS0, speed 57600
Escape character: Ctrl-\ (ASCII 28, FS): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options.
?Carrier required but not detected.
***********************************
Hint: To CONNECT to a serial device that
is not presenting the Carrier Detect signal,
first tell C-Kermit to:
SET CARRIER-WATCH OFF
***********************************
C-Kermit 8.0.211, 10 Apr 2004, for Linux
Copyright (C) 1985, 2004,
Trustees of Columbia University in the City of New York.
Type ? or HELP for help.
(/home/cheng/project/company/emb-gate/platform-BF518/kernel/2010R1/linux-2.6.x/drivers/net/can/) C-Kermit>
Now input exit to quit Kermit.
terminal shows:
(/home/cheng/project/company/emb-gate/platform-BF518/kernel/2010R1/linux-2.6.x/drivers/net/can/) C-Kermit>exit
Closing /dev/ttyS0...OK
[cheng@localhost can]$
Now the serial works well!
step 4 :down loading uboot.ldr
[cheng@localhost uboot]$ cp u-boot-bf518f-ezbrd-uart-2010R1-RC2.ldr /tftpboot/uboot.ldr
[root@localhost cheng]# bfin-uclinux-ldr -l /tftpboot/uboot.ldr /dev/ttyS0 && kermit -l /dev/ttyS0 -b 57600 -C connect
Loading LDR /tftpboot/uboot.ldr ... OK!
Removing stale lock '//var/lock/LCK..ttyS0'
Opening /dev/ttyS0 ... OK!
Configuring terminal I/O ... OK!
Trying to send autobaud ... OK!
Trying to read autobaud ... OK!
Checking autobaud ... OK!
Autobaud result: 115200bps 29.491mhz (header:0xBF DLL:0x10 DLH:0x00 fin:0x00)
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OK!
You may want to run minicom or kermit now
Quick tip: run 'ldr <ldr> <tty> && minicom'
Connecting to /dev/ttyS0, speed 57600
Escape character: Ctrl-\ (ASCII 28, FS): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options.
----------------------------------------------------
Keyboar now not responded now .
Uboot not runs.
What to do next ?
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2011-05-24 22:41:39 Re: ERROR:down load uboot.ldr file from UART MODE on BF518 EZ BOARD
Mike Frysinger (UNITED STATES)
Message: 100818
use the -b option to bfin-uclinux-ldr to load at 57600. then post the updated display.
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2011-05-24 22:47:06 Re: ERROR:down load uboot.ldr file from UART MODE on BF518 EZ BOARD
Aaron Wu (CHINA)
Message: 100819
Looks like you can download the u-boot to board via ldr util correclty, but just can not get the u-boot console printed correctly. why there is a "Autobaud result: 115200bps 29.491mhz ". The default baudrate should be 57600. On my side I used to do the same thing and it works fine. here is the steps:
1)Download the u-boot via ldr util as you did
2)open a minicom, and set it to 57600-8-N-1, and connect to the target board
3)Once the u-boot is successfully downloaded in step 1, it will run and you get the u-boot console on minicom.
Let me know if you have more questions.
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2011-05-24 22:56:53 Re: ERROR:down load uboot.ldr file from UART MODE on BF518 EZ BOARD
Aaron Wu (CHINA)
Message: 100820
By the way, for your minicom lock issue when trying to open a minicom as mentioned in email, you may ps to find the minicom process PID, then force kill it by kill -9 PID