[Celinux-dev] Linux kernel hangs while booting on hardware

[Ashay Jaiswal]

Hello all,

I have successfully build SH4-Linux toolchain based on 	
(binutils-2.17, gcc-4.1.1, glibc-2.5) for Renesas SH target.	

I am trying to cross compile Linux-2.6.17 using the above mentioned 	
Cross-toolchain for Renesas target (sh-7751R2D+).	

I am facing following problem while booting kernel on the target:	
In "arch/sh/kernel/timers/timer-tmu.c" file:	
In "tmu_timer_init" function 'interval' variable is assigned 0 	
value and thus kernel hangs while "initializing tmu".	

Observation:	
In "arch/sh/kernel/cpu/clock.c"-	
In function "clk_get" the initial value of rate (member of clk
structure) is 0.	

I have initialized 'interval' variable to 80000(hard coded in kernel
source) 
It then boots further but hangs after "Freeing unused kernel memory: 84k
freed"	

After investigating into the kernel source I observed following problem:

In "init/main.c" file	
Kernel hangs while executing "run_init_process" ("/sbin/init") even
though "init" 	
is present in sbin folder.	

I tried to execute some binaries using 'exec' system call in the kernel
source 	
but kernel hangs while executing 'exec' call.	

When tried with GCC-3.4.6 based toolchain (for cross compiling kernel)
kernel 	
boots properly on hardware.	

Any help on this will be appreciated.	

Regards,	
Ashay Jaiswal	
KPIT Cummins Infosystems Ltd,	
Pune (INDIA) 	

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~	
Free download of GNU based SH-Linux toolchains for Renesas' SH Series. 	
The following site also offers free technical support to its users. 	
Visit http://www.kpitgnutools.com for details. 		
Latest versions of KPIT GNU SH-Linux tools were released on September
27, 2006.	
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~