Kernel crashes

shylock_1 · 05-31-2012, 08:55 AM

Hi Guys,

I am trying to flash ROM memory with Linux Kernel 2.6.39.4 with busy box I have following hw and requirements

1/ Using intel's Atom E660T process which only can go upto 32bit no more.
2/ On board 8MB of ROM eMM connected to SPI0 bus and like to store a kernel 2.6.39.4 into it so the entire board could boot from it

3/ After successful build of Kernel 2.6.39.4 an OS image file found in the linux-2.6.39.4/arch/x86/boot/bzImage

4/ Which normally converted to binary using following command

Code:

./mkimage -c "console=ttyS0,115200n8 rootwait root=/dev/mmcblk0p2 init=/sbin/init loglevel=7 position_fix=1 pcie_aspm=off lpj=1499875" -i ramdisk.cpio bzImage plk.bin

5/ Finally I get plk.bin file which is roughly around 3.1MB in size

6/ Normally there are two partition on the eMM (NAND ROM) i.e
p1 and p2
7/ The p2 is created for the busybox utilities and p1 for actual kernel image i.e plk.bin to be store for regular use.

8/ After sending command

Code:

dd if=/plk.bin  of=/dev/mmcblk0p1  conv=fsync

The image get flashed into the ROM but boot process beigins
following stage it crashes the kernel and boot does NOT successfully
reach to bash prompt.
I wonder what I am missing? File, or any other resource I could not figure out whats gone wrong. If some please shed light on this remedy.

Code:

²L*„¥0d½5‘Á8 *É£k´H¸,©Kÿ*Ìá9f9Ö ·ƒ6Á.æÍ-} ..4«´¬ý£¤3-“¸,)6¿Ê¥´Kÿ*Ìá¹³²®d
[    2.928575] Write protecting the kernel text: 3728k
[    2.933567] Write protecting the kernel read-only data: 1684k
console ready
execve() failed: no such file or directory
[    2.947582] Kernel panic - not syncing: Attempted to kill init!
[    2.953623] Pid: 1, comm: init Not tainted 2.6.39.4 #9
[    2.958866] Call Trace:
[    2.961380]  [<c139fed2>] ? printk+0xf/0x11
[    2.965652]  [<c139fdd9>] panic+0x5b/0x145
[    2.969838]  [<c103120e>] do_exit+0x92/0x5c5
[    2.974201]  [<c11bdb42>] ? tty_write+0x1e5/0x1e5
[    2.979003]  [<c10318de>] sys_exit+0x13/0x13
[    2.983364]  [<c13a2621>] syscall_call+0x7/0xb

Thank you in advance, guys I am really upto my last thread.
Shy

smallpond · 05-31-2012, 06:11 PM

Make sure your flash is correct:

Code:

cmp plk.bin /dev/mmcblk0p1

Any way you can run plk.bin in a VM environment? That would tell you if it is built ok.

shylock_1 · 05-31-2012, 11:59 PM

Hi,

To all my working environment are native Linux, and I do not know how to test or create VM environment for this test. If you have procedure please could you outline. I might give a go.

Thank you,

Shy