Hi, 
 
I am porting Linux kernel 3.9.0 to my device which is having android 4.1 & 
kernel 3.0.3.
 

With android kernel 3.0.3, it is booting properly. But after flashing my 
build kernel 3.9.0, I am not seeing any initial kernel logs i.e 
"Uncompressing Kernel.. Booting is done".

 
We have verified machine ID & zreladdr etc. passed from bootloader and 
configured in kernel are same. Please help me if someone knows how to solve 
this problem.
 
If any assistance provided in debugging arch/arm/bootp compressed folder, 
It would be great help.
 

--------------------------------------------------------------------------------------------------

serial log with Linux 3.0.3

-----------------------------

 

......ATAG_CORE: 5 54410001 0 0 0

MEMCONFIG: 20e01323 20e01323

ATAG_MEM: 4 54410002 10000000 40000000

ATAG_MEM: 4 54410002 10000000 50000000

ATAG_MEM: 4 54410002 10000000 60000000

ATAG_MEM: 4 54410002 10000000 70000000

ATAG_SERIAL: 4 54410006 175d762f 464119ec

ATAG_REVISION: 3 54410007 c

ATAG_CMDLINE: 3d 54410009 ': loglevel=8 console=ram sec_debug.enable=0 
sec_debug.enable_user=0 c1_watchdog.sec_pet=5

sec_log=0x200000@0x5ea00000 s3cfb.bootloaderfb=0x5ec00000 
ld9040.get_lcdtype=0x0 consoleblank=0 lpj=3981312 vmalloc=144m 
console=ttySAC2,115200'

ATAG_NONE: 0 0

 

Starting kernel at 0x40008000...

 

Uncompressing Linux... done, booting the kernel.

[    0.000000] Initializing cgroup subsys cpu

[    0.000000] Linux version 3.0.31-1014481-eng 
(*se.infra@SEP-112*<se.infra@SEP-112>) 
(gcc version 4.4.3 (GCC) ) #3 SMP PREEMPT Fri Mar 1 06:19:36 KST 2013

[    0.000000] CPU: ARMv7 Processor [412fc091] revision 1 (ARMv7), 
cr=10c5387d

[    0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction 
cache

[    0.000000] Machine: SMDK4210 

.................

.................

--------------------------------------------------------------------------------------------------

 

serial log with Linux 3.9.0

---------------------------

 

ATAG_CORE: 5 54410001 0 0 0

MEMCONFIG: 20e01323 20e01323

ATAG_MEM: 4 54410002 10000000 40000000

ATAG_MEM: 4 54410002 10000000 50000000

ATAG_MEM: 4 54410002 10000000 60000000

ATAG_MEM: 4 54410002 10000000 70000000

ATAG_SERIAL: 4 54410006 175d762f 464119ec

ATAG_REVISION: 3 54410007 c

ATAG_CMDLINE: 3d 54410009 ': loglevel=8 console=ram sec_debug.enable=0 
sec_debug.enable_user=0 c1_watchdog.sec_pet=5

sec_log=0x200000@0x5ea00000 s3cfb.bootloaderfb=0x5ec00000 
ld9040.get_lcdtype=0x0 consoleblank=0 lpj=3981312 vmalloc=144m 
console=ttySAC2,115200'

ATAG_NONE: 0 0

 

Starting kernel at 0x40008000...  *(Last Bootloader logs)*

 

*<<<<No log coming after this>>*
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
Thanks,
Dilshad

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