[U-Boot-Users] Strange : Same 8248 image needs to be reprogrammed
samsongshu at yahoo.com.cn
Mon Jun 13 13:42:46 CEST 2005
After porting u-boot on a 8248 board, I was confused
by a programming problem with WireTAP. For the sake
of 8248/8260 HRCW theory, RSTCONF must pull up to
connect 8248 target with a No-head config file when
there is a blank FLASH on board or WireTAP cannot
init the target correctly. The programming process is
Pull up RSTCONF -> Connect WireTAP with No-head
config file -> Program the image on 0xff000000
-> Disconnect WireTAP -> Pull down RSTCONF
-> Power-on -> No serial output -> Power-down
-> Connect WireTAP with head config file
-> Reprogram the same image at 0xff000000
-> Disconnect WireTAP -> Power-on -> Work!
We suspected sth wrong on first programmig. So we
checked the FLASH content with WireTAP but found
at least first and last three bytes had the right
content. Should I need to check all FLASH content?
The image I compiled first is about 100KByte!!!
I wanna to blame it on config file we used or FLASH
programming mechanism or 8248 itself. But I have
no clear clue with them:-(
Could anyone have similar experience on 8260 series
target? How about BDI2000 on it? Any idea?
Thanks in advance,
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