linux2.6 does not boot from XUP

Grant Likely grant.likely at
Tue May 6 13:15:24 EST 2008

2008/5/5 张轶 <zhangyihere at>:
> The kernel I am using is 2.6.24,gcc 4.1.0,glibc 2.3.6,and the board Xilinx
> It compiles successfully with some warnings like below:
>   MODPOST vmlinux.o
> WARNING: vmlinux.o(.text+0x223c): Section mismatch: reference to
> .init.text:early_init (between 'start_here' and 'initial_mmu')
>  WARNING: vmlinux.o(.text+0x2254): Section mismatch: reference to
> .init.text:machine_init (between 'start_here' and 'initial_mmu')
> WARNING: vmlinux.o(.text+0x2258): Section mismatch: reference to
> .init.text:MMU_init (between 'start_here' and 'initial_mmu')
>  WARNING: vmlinux.o(.text+0x22b2): Section mismatch: reference to
> .init.text:start_kernel (between 'start_here' and 'initial_mmu')
> WARNING: vmlinux.o(.text+0x22b6): Section mismatch: reference to
> .init.text:start_kernel (between 'start_here' and 'initial_mmu')
>     LD      vmlinux
> The system is created as ACE file and booted from CF Card
> After uncompressing the kernel,the system hangs.The information is like
> below:
> loaded at:     00400000 0056619C
> board data at: 00000000 0000007C
> relocated to:  00404068 004040E4
> zimage at:     00404E51 00563BF4
> avail ram:     00567000 7C9E2370
> Linux/PPC load: console=ttyS0,9600 root=/dev/xsysace/disc0/part3 rw
> Uncompressing Linux...done.
> Now booting the kernel
> I wonder if it is the upper WARNINGs that causes the hang of the system, and
> how can I fix it.

The warnings most likely are not related to your problem.  Most likely
you just haven't set console correctly.  Are you using a uartlite?  If
so, use 'console=ttyUL0' on the kernel parameters line.

If you can halt the CPU and look at memory, your should also look at
__log_buf (see to find the address of __log_buf) to see how
far the kernel is booting.


Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

More information about the Linuxppc-dev mailing list