I have figured it out,haha!!
2010/7/30 Detlev Zundel dzu@denx.de
Hi yaojin liu lanmanck@gmail.com writes:
I use arm-2009q1-203-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.gz to compile uboot1.3.4, and found that if I set OPTFLAGS to -O1,or O2, uboot will crash, usually in printf().
<faq>
What board do you use? Why do you use U-Boot 1.3.4 and not current code?
</faq>
when i set to O3, it runs to prompt, but after several seconds(or
minutes),
the code is dead,and the console has no response. Os also has the problem,usually cannot run to main_loop(). How should i resolve this problem?
Actually I presume that somebody tested U-Boot on the board you use. Probably there is a running version on it - so the most obvious problem seems to be your toolchain. So my advise is:
Find a working starting point, i.e. a known to work U-Boot version for your board (latest?) together with a known-to-work toolchain (eldk-4.2 for arm?).
Then use your toolchain, compare results, find problem and post answer :)
Cheers Detlev
-- There are three kinds of people in the world; those who can count and those who can't. -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu@denx.de