Custom 3.3 kernel with kexec support and patched recovery

[seaniko7]

As in title. Installer also includes pre-compiled kexec static binary for Kindle Keyboard.

Enjoy

http://db.tt/6t3l1jfS

[inameiname]

Originally Posted by seaniko7

As in title. Installer also includes pre-compiled kexec static binary for Kindle Keyboard.

Enjoy

http://db.tt/6t3l1jfS

Could you possibly explain a bit more as to just what installing this would do, mainly for us less apt on such kernel things? For instance, what is the benefit of the pre-compiled kexec static binary? Also, is it possible to get an uninstall for this as I tend to only do hacks when I know they can be reversed. Thanks in advance.

[giorgio130]

Great, time to find out if my backported 2.6.31 kernel works or not Thank you very much!

[giorgio130]

If you changed the source when you have the time you should also upload at least a patch, in compliance with gpl...

[seaniko7]

@giorgio130, the only thing, which I've changed is kernel configuration. Initramfs is not a part of kernel source code.

I think It'll be nice to roll my own version of initramfs with g_serial module for debugging purposes...

[giorgio130]

[root@kindle root]# kexec
-sh: kexec: Permission denied
[root@kindle root]# kexec -help
-sh: kexec: Permission denied

this is what I get...

edit: solved by
mntroot rw
chmod 777 /bin/kexec
mntroot ro

[seaniko7]

chmod 777 is your friend

edit :
nvm, you figured it out by yourself

[giorgio130]

[root@kindle /bin]# kexec /mnt/us/zImage
Cannot open /proc/atags: No such file or directory
kexec_load failed: Function not implemented
entry = 0x80008000 flags = 280000
nr_segments = 2
segment[0].buf = 0x28028
segment[0].bufsz = 10
segment[0].mem = 0x80001000
segment[0].memsz = 1000
segment[1].buf = 0x40154008
segment[1].bufsz = 1be330
segment[1].mem = 0x80008000
segment[1].memsz = 1bf000

I get the same with the original kernel extracted with getKernels1.3... are you sure you uploaded the right version?

[geekmaster]

Originally Posted by giorgio130

[root@kindle /bin]# kexec /mnt/us/zImage
Cannot open /proc/atags: No such file or directory
kexec_load failed: Function not implemented
entry = 0x80008000 flags = 280000
nr_segments = 2
segment[0].buf = 0x28028
segment[0].bufsz = 10
segment[0].mem = 0x80001000
segment[0].memsz = 1000
segment[1].buf = 0x40154008
segment[1].bufsz = 1be330
segment[1].mem = 0x80008000
segment[1].memsz = 1bf000

I get the same with the original kernel extracted with getKernels1.3... are you sure you uploaded the right version?

Does this support a compressed kernel zImage? Did you try an uncompressed uImage like the newer kindles use? I did not study the source code so I am just guessing here, but I am very interested in this...

[giorgio130]

As I say it happens also trying to load the original kernel. I also read elsewhere that /proc/atags is necessary for getting kexec to work but it's not present.

[twobob]

Okay. since the files are still hanging about I'll ask... what exactly does "custom" entail?

Like - as in - the complete mario_defconfig or w/e + kexec and no other changes?

EDIT: NVM I think it is this one: https://www.mobileread.com/forums/sho...d.php?t=175602

Cheers : )