Thanks All!!!!

What I want to know is how PMON jump to linux kernel image,

when mips.S function "_go" execute "j k0" command, 
(k0 is assigned by LREG(k0,R_EPC,gp)  /* EPC */)
k0 will be 40*(DBGREG)=40* (0x7ff00bad), 

the address is kuseg's domain. is it really work to turnin linux kernel image??
(In common case, linux kernl image always start from 0x100000)

any suggestion?
I just want to know MORE about the LINK method between PMON and MIPS-Linux?

best regards,
--Ku