i.Mx31 console messages

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Murali

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Oct 10, 2008, 11:07:06 AM10/10/08
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Hi,

I am porting android to i.Mx31 hardware. I am working on the linux
2.6.22.6 kernel with android patch. For the android file system, I
have extracted the ramdisk.img from the Android 1.0 SDK. I have then
then extracted the system and data folders from the emulator and then
created a cpio archive out of these.
I am able to boot the kernel with the android file system. I am using
ttymxc0 as the kernel console and the messages are displayed on the
console(Hyperterminal on the PC connected to the hardware over UART).
I have still not got the display working.
So, I would like to see all the messages on the console. For the
kernel, I have specified the init in the android file system as the
initrd.

After executing the init the console messages stop after sometime.
When I debugged this further, I added debug messages in do_execve to
check where the messages actually stop. I found that the last
do_execve being called in /system/bin/sh in init.rc.
So, I would like to know if executing the /system/bin/sh actually
change the console to another device which is why I am not seeing any
other messages? If so what console should I be using?
In the emualtor the console is set to "ttyS0". Here even after
executing the /system/bin/sh the console messages continue to appear.
So, I even tried modifying the console to "ttyS0" in the kernel and
inspite of that the messages stop after executing /system/bin/sh.

Any help in this regard would be of great help

Thanks,
Murali
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