DR800 usbnet (USB networking to make development easier) for DR800 - Page 3

scotsman · 03-01-2011, 07:20 AM

Hi there,

would anyone of the happy DR800 usb networkers be willing to post the dmesg output of inserting the usb_gadget.ko module here? Just put a dmesg -c before the insmod usb_gadget.ko line, and a dmesg -c > /media/mmcblk0p0/dmesgoutput.txt after that line. This way we DR1000 people could check where the DR1000 goes astray, and that might well help us to adapt the patch accordingly. Many thanks!

scotsman · 03-01-2011, 07:27 AM

Dear all,

I have opened a new thread for getting the usb networking to work on the DR1000 specifically:
http://https://www.mobileread.com/forums/showthread.php?p=1422075

jonathan_s · 07-18-2011, 09:54 PM

[EDIT]I found the file in /proc/config.gz[/EDIT]

@GregorRichards I'm trying to build usbnet from source, mainly to figure out how to build kernel modules - I want to build ext2.ko The sources include a diff of the .config kernel configuration file, but where do I find the original .config to patch? I tried using the file er0200_dr800s_defconfig that comes with the kernel sources but couldn't insmod the resulting modules without 'Unknown symbol in module' errors.

Thanks!

Iñigo · 07-19-2011, 03:57 AM

Quote:

Originally Posted by jonathan_s

[EDIT]I found the file in /proc/config.gz[/EDIT]

@GregorRichards I'm trying to build usbnet from source, mainly to figure out how to build kernel modules - I want to build ext2.ko The sources include a diff of the .config kernel configuration file, but where do I find the original .config to patch? I tried using the file er0200_dr800s_defconfig that comes with the kernel sources but couldn't insmod the resulting modules without 'Unknown symbol in module' errors.

Thanks!

If you build an ext2 module, please share

jonathan_s · 07-19-2011, 04:02 AM

Quote:

Originally Posted by Iñigo

If you build an ext2 module, please share

My pleasure

Iñigo · 07-19-2011, 04:59 AM

Quote:

Originally Posted by jonathan_s

My pleasure

Thanks.

It fails to load the module in the emu:

Code:

root@qemuarm:/media/mmcblk0p1# insmod /media/mmcblk0p1/ext2.ko   
insmod: error inserting '/media/mmcblk0p1/ext2.ko': -1 Invalid module format

jonathan_s · 07-19-2011, 07:21 AM

Quote:

Originally Posted by Iñigo

It fails to load the module in the emu:

Hmmm my first assumption was that I'd accidentally posted the version I first built which didn't work. But I just confirmed that this is the file that works for me on the IREX. I don't have an emulator - it seems you need to download it from debian.o-hand.com which has been down for the last few days. (Maybe you can help me with that.) Meanwhile I don't know what to suggest - the module works fine for me, I've mounted ext2 partitions successfully.

Code:

root@dr800s:/media/mmcblk0p1/Programs/_debian# insmod ext2.ko 
root@dr800s:/media/mmcblk0p1/Programs/_debian#

Maybe confirm:

Code:

root@dr800s:/media/mmcblk0p1/Programs/_debian# md5sum ext2.ko 
ec6395da1d6e7426a252a2d69fd0b4f0  ext2.ko

Iñigo · 07-20-2011, 11:33 AM

Ok, I had 2 issues:
- I tried on the emulator... it doesn't work there... maybe because kernel already includes a ext2 module
- I stripped the file... it doesn't work on my DR800

But if I try your original file (770 KB) insmod works

Btw, the emulator comes with IREX packages, you don't need any debian.o-hand.com stuff.

Iñigo

dima_tr · 07-20-2011, 01:23 PM

- the kernel [version] in the emulator differs to the one on real DR device -> .ko compiled for DR is 95% not expected to work within the emulator
- simple "strip *.ko" somehow removes important information, the file becomes unusable .. if you really want to clean the file you should use "strip --strip-unneeded *.ko"

Have learned this during experiments with .ko for DR800

Iñigo · 07-20-2011, 02:32 PM

Quote:

Originally Posted by dima_tr

- the kernel [version] in the emulator differs to the one on real DR device -> .ko compiled for DR is 95% not expected to work within the emulator
- simple "strip *.ko" somehow removes important information, the file becomes unusable .. if you really want to clean the file you should use "strip --strip-unneeded *.ko"

Have learned this during experiments with .ko for DR800

ok, "strip --strip-unneeded *.ko" works. Thanks

jonathan_s · 07-20-2011, 09:38 PM

Ah, OK stripping the kernel modules of unnecessary symbols makes sense.

Can someone help me with another question - how would I go about installing a different kernel rather than just building new modules for the current kernel. More specifically, do I have to reflash the rootfs and all the other things, or can I just reflash the kernel? I tried putting update.dat and zImage renamed to kernel.bin into System/update and the DR800 gave all the appearances of flashing, but when it rebooted it was still running the old kernel.

03-01-2011, 07:20 AM	#31
scotsman Enthusiast Posts: 32 Karma: 106 Join Date: Mar 2009 Device: irex DR1000S	request for dmesg output Hi there, would anyone of the happy DR800 usb networkers be willing to post the dmesg output of inserting the usb_gadget.ko module here? Just put a dmesg -c before the insmod usb_gadget.ko line, and a dmesg -c > /media/mmcblk0p0/dmesgoutput.txt after that line. This way we DR1000 people could check where the DR1000 goes astray, and that might well help us to adapt the patch accordingly. Many thanks!

03-01-2011, 07:27 AM	#32
scotsman Enthusiast Posts: 32 Karma: 106 Join Date: Mar 2009 Device: irex DR1000S	new thread for DR1000 Dear all, I have opened a new thread for getting the usb networking to work on the DR1000 specifically: http://https://www.mobileread.com/forums/showthread.php?p=1422075

07-18-2011, 09:54 PM	#33
jonathan_s Enthusiast Posts: 31 Karma: 10 Join Date: Nov 2009 Device: none	[EDIT]I found the file in /proc/config.gz[/EDIT] @GregorRichards I'm trying to build usbnet from source, mainly to figure out how to build kernel modules - I want to build ext2.ko The sources include a diff of the .config kernel configuration file, but where do I find the original .config to patch? I tried using the file er0200_dr800s_defconfig that comes with the kernel sources but couldn't insmod the resulting modules without 'Unknown symbol in module' errors. Thanks! Last edited by jonathan_s; 07-19-2011 at 12:54 AM. Reason: Problem solved

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07-20-2011, 11:33 AM	#38
Iñigo Guru Posts: 730 Karma: 72743 Join Date: Feb 2008 Location: Here or there Device: iRex iLiad, iRex DR800S. K4NT. Kobo Aura, Aura One, Libra 2.	Ok, I had 2 issues: - I tried on the emulator... it doesn't work there... maybe because kernel already includes a ext2 module - I stripped the file... it doesn't work on my DR800 But if I try your original file (770 KB) insmod works Btw, the emulator comes with IREX packages, you don't need any debian.o-hand.com stuff. Iñigo

07-20-2011, 01:23 PM	#39
dima_tr Groupie Posts: 175 Karma: 863 Join Date: Oct 2009 Location: Germany, Karlsruhe Device: Iliad v2, DR800S (inlove)	- the kernel [version] in the emulator differs to the one on real DR device -> .ko compiled for DR is 95% not expected to work within the emulator - simple "strip .ko" somehow removes important information, the file becomes unusable .. if you really want to clean the file you should use "strip --strip-unneeded .ko" Have learned this during experiments with .ko for DR800

07-20-2011, 09:38 PM	#41
jonathan_s Enthusiast Posts: 31 Karma: 10 Join Date: Nov 2009 Device: none	Ah, OK stripping the kernel modules of unnecessary symbols makes sense. Can someone help me with another question - how would I go about installing a different kernel rather than just building new modules for the current kernel. More specifically, do I have to reflash the rootfs and all the other things, or can I just reflash the kernel? I tried putting update.dat and zImage renamed to kernel.bin into System/update and the DR800 gave all the appearances of flashing, but when it rebooted it was still running the old kernel.