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ymodem
Added by Thomas Nagel about 13 years ago
Hi,
What is a better option to upload a file (uImage for example) at U-boot prompt ?
When ymodem transfer fails, u-boot stays in loop forever, unable to interrupt.
kermit seems slower than ymodem.
Are there any known problems using ymodem ?
Command used : sz -b -v --ymodem /root/uImage >/dev/ttyUSB0 </dev/ttyUSB0
Regards,
TN
Replies (1)
RE: ymodem - Added by Michael Williamson about 13 years ago
Hello Mr. Nagel,
We've never tried using ymodem here at Critical Link as serial download speed hasn't been an issue. Folks generally have a faster interface to the device or do it during kernel runtime, or use kermit, which we haven't had any reports of failures with. You might check the TI E2E site regarding the TI PSP u-Boot for the OMAP-L138 (which we basically cloned and added support for the MityDSP-L138 platform on top of).
If we get a chance, we can try to reproduce the issue, but it may be a while before we get to it here.
If you are just doing development, you may be able to connect using a JTAG emulator after the UBL has loaded and download the image into memory directly (e.g., load the image via the emulator to 0xc0700000 and follow the programming instructions that way or just boot the image out of RAM for testing). This would be faster than a serial download each time.
-Mike
