Kexec From Debian To Sharprom, Really Working How-to!, you have to compile a kernel - easy Options

[matthis]

Hello, I was frustrated about not being able to kexec successfully into sharprom, but frustration is over!!
Following Pelrun's hint that the NAND partition layout had to be hardcoded, I recompiled eviljazz's kernel passing the necessary argument to the kernel, and now using this kernel for kexec the dreaded: "unable to open initial console" is GONE!!"

How-to


1. On your Z
Boot into the sharprom using your usual kernel, check the file /var/log/dmesg and find the line which contains this:
mtdparts=sharpsl-nand:7168k@0k(smf),44032k@7168k(root),-(home) jffs2_orphaned_inodes=delete EQUIPMENT=5 LOGOLAND=1 DEFYEAR=2008 LOGO=1 LAUNCH=q
(Your values for sharpsl-nand may vary, and this is why you need to build your own kernel)

2. On your linux Desktop:
- download eviljazz's toolchain http://katastrophos.net/zaurus/kernels/com...1.09.05.tar.bz2
- download eviljazz's kernel tarball http://katastrophos.net/zaurus/kernels/cur....20-v55.tar.bz2

- Follow the instructions in the kernel tarball's README, but after executing "make oldconfig", do "make menuconfig".
In there, go to General Setup, and scroll down until you find the place to edit kernel arguments. By default, they should be: "console=ttyS0 root=/dev/mtdblock2"
Select that, and add the line you have noted on your Z earlier, so that the boot param becomes:
console=ttyS0 root=/dev/mtdblock2 mtdparts=sharpsl-nand:7168k@0k(smf),44032k@7168k(root),-(home) jffs2_orphaned_inodes=delete EQUIPMENT=5 LOGOLAND=1 DEFYEAR=2008 LOGO=1 LAUNCH=q
(Again, with your values for sharpsl-nand)

Go on with "make dep" and "make zImage", the resulting zImage will work for kexecing to sharprom!

[maemorandum]

Following Pelrun's hint that the NAND partition layout had to be hardcoded, I recompiled eviljazz's kernel passing the necessary argument to the kernel, and now using this kernel for kexec the dreaded: "unable to open initial console" is GONE!!"

Thank you, matthis. Following your guide, i got a working sharp-rom zimage for dualbooting!
But, i need the cacko-rom one instead of the sharp one.

So, is there an instruction to get a "hardcoded" cacko-zImage (C1000/C3200)?

[xamindar]

But, i need the cacko-rom one instead of the sharp one.

So, is there an instruction to get a "hardcoded" cacko-zImage (C1000/C3200)?

I don't get it. Is there some special cacko kernel that you were using before? The kernel should work on both cacko and sharp rom as they use the same kernel anyway. Please explain why these instructions didn't work for you.

[maemorandum]

using a c1000:

1. I prepared a sd-card with the zaurus_eabi_rootfs_071201.tar.bz2 and the 2.6.24.3-yonggun kernel modules and checked fstab, depmod hwclock.

2. I made a trisoft sharp nand restore from cf-card

3. I started the sharp-rom and noticed the mtdparts=sharpsl-nand command

4. I installed the http://katastrophos.net/zaurus/kernels/com...1.09.05.tar.bz2 and the eviljazz's kernel tarball and compiled the kernel with the new noticed line

5. I copied the zImage.bin.sd1 and the updater.sh for the C1000 on a cf-card and did the yonggun kernel installation for the sharp bootloader

6. I booted into debian from the inserted sd-card without problems, installed the kexec package and placed the compiled zimage and sharp-bootloader-script into the /root directory.

7. I started the script and the C1000 perfectly boots into the sharp-rom. (Dualbooting eabi-sharprom)

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In order to boot into cacko i installed the cacko-light rom with 19 MB resize (flash-utility) and eviljazz kernel update fastfpe. Then i went on with number 5. Unfortunately the booting of the cacko started and failed with the old "initial console" error.

Did it once more with the original cacko-light rom with 19 MB resize without kernel update. This ended in a

CODE

Kernel panic: Attempted to kill init!

too.