"Mark A. Greer" <mgreer at mvista.com> wrote: > > I cannot see any active info.Is early console > > output message not enough to find out something > > useful? > > Sure it does. You have to enable it, then add some > progress lines to help narrow down where you're > panic'ing/hanging.
Well, the cmdline I added is the switch of early console enable, which I should enable CONFIG_SERIAL_8250_CONSOLE in kernel config first. A new and nice feature of 2.6.x to me. > You can even use the > progress facility to dump the __log_buf. I don't have such experience. If possible, could u give me a linkage or doc for me to have a look? > I'm taking your unwillingness to use a jtag/cops > debugger as indication > that you don't have such a tool!?!? For the moment, I don't have such a cute hardware tool which can support source code debug like BDI2000. To be frank, I haven't used a hardware tool to debug kernel. Perhaps the problem I met wasn't complicated to use it. But now it is another story:-) BTW, Could I use KGDB to try it? Thanks, Sam Best regards, Sam _________________________________________________________ Do You Yahoo!? 150??MP3???????????? http://music.yisou.com/ ??????????????????? http://image.yisou.com 1G??1000??????????? http://cn.rd.yahoo.com/mail_cn/tag/1g/*http://cn.mail.yahoo.com/event/mail_1g/
