U-Boot for Nokia RX-51 with BootMenu (updated version 2012.10-rc3-1) - Page 10 - maemo.org

plipp | # 91 | 2012-02-02, 07:52 | Report

yay, i managed to boot with:

ITEM_NAME="Mer - Nemo Mobile"
ITEM_ID="nemo"
ITEM_CMDLINE="root=/dev/mmcblk0p1 rootwait rw console=ttyO2,115200n8 console=tty0 omapfb.vram=0:2M,1:2M,2:2M mtdoops.mtddev=2"
ITEM_DEVICE="${EXT_CARD}p3"
ITEM_KERNEL="uImage"
ITEM_FSTYPE="fat"
ITEM_USEATAG="1"

I got some mmcblk0 errors during boot but it managed to get into nemo. But then after a while it crashed by spraying the console with something like:

mmcblk0: error -110 sending read/write comand
mmcblk0: error -110 sending status comand

But that might just be due to my sd card being damaged or something?

Anyway, thanks for all the help!

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Netweaver | # 92 | 2012-02-02, 09:40 | Report

ha, exact same behavior here. And after that crash Nemo doesn't boot anymore.

It complaints about locked x server files etc. Ends up in an endless loop.
I'm now rewriting my SD card, thinking I was sold a bad card.
It seems it's not the case. There must still be other things to tweak.

PS I'm having a Samsung Class 10 8 GB card, from a reputable seller at Amazon. I'm expecting also a Samsung Class 6 8GB card, for actual runtime speed comparison testing.

flocke000 | # 93 | 2012-02-02, 10:47 | Report

I get exactly the same errors with the bootmenu entry posted by plipp.

My card is a 8GB class 10 from samsung, I don't think it's an issue with a bad card if we all got the same errors.

Maybe some of the options in the CMDLINE are wrong or it still needs more options ...

Fabry | # 94 | 2012-02-02, 12:03 | Report

The bootmenu items should be:

For SD generated by Nemo image:

Code:

ITEM_NAME="Mer - Nemo Mobile from SD"
ITEM_ID="nemo1"
ITEM_DEVICE="${EXT_CARD}p3"
ITEM_FSTYPE="fat"
ITEM_USEATAG="1"
ITEM_KERNEL="uImage"

For booting from a generic partition (i.e. from eMMC's partition):

Code:

ITEM_NAME="Mer - Nemo Mobile generic"
ITEM_ID="nemo2"
ITEM_KERNEL="kernel-name"
ITEM_USEATAG="1"
ITEM_CMDLINE="root=/dev/mmcblk1p5 rootwait rw console=ttyO2,115200n8 console=tty0 omapfb.vram=0:2M,1:2M,2:2M mtdoops.mtddev=2"

Remember to copy zImage (not uImage) kernel to /boot and edit "mmcblk1p5" to point to your partition (SD is mmcblk0 and eMMC is mmcblk1).

Last edited by Fabry; 2012-02-02 at 12:37.

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Fabry | # 95 | 2012-02-02, 12:08 | Report

Originally Posted by flocke000 View Post

Maybe some of the options in the CMDLINE are wrong or it still needs more options ...

Or subsystems (SD / eMMC) are not initialized by this u-boot as MeeGo/Nemo wants

Netweaver | # 96 | 2012-02-02, 12:30 | Report

mmmm, are you sure about that external SD card bootmenu item ?
When trying that I'm getting in U-Boot :

Originally Posted by

Booting Boot Menu entry 3
mmc0 is current device
reading boot.scr

** Unable to read "boot.scr" from mmc 0:3 **

And I'm being dropped in the U-Boot console.

The 3rd partition (the FAT one) on the SD card does not contain a boot.scr file, only a kernel config text file, a kernel memory map text file, the vmlinuz version of the kernel and the uImage version of the kernel. No boot.scr file.

What are we doing wrong ? Does this work on your N900 ?

PS. In the mean time received I my Samsung 8GB Class 6 SD card and I used that one as the target for the image, writing was fine. As opposed to the class 10 SD card, which seems like f*cked up. rewriting the image took forever and the card reader activity light was very strange behaving. I'll try to recover that one later.

Last edited by Netweaver; 2012-02-02 at 12:33.

Fabry | # 97 | 2012-02-02, 12:38 | Report

Originally Posted by Netweaver View Post

mmmm, are you sure about that external SD card bootmenu item ?
When trying that I'm getting in U-Boot :

And I'm being dropped in the U-Boot console.

The 3rd partition (the FAT one) on the SD card does not contain a boot.scr file, only a kernel config text file, a kernel memory map text file, the vmlinuz version of the kernel and the uImage version of the kernel. No boot.scr file.

I have edited post, please retry

Netweaver | # 98 | 2012-02-02, 12:59 | Report

I tried again, with the removal of the SCRIPT line. Now I'm having the same result as with the CMDLINE='root= ..." version we were trying before. Getting loads of mmblck1: error -110 lines in succession reading/receiving for minutes (already 8 minutes ...) in a row. This is now the 2nd card I'm putting in giving this issue. But this one hasn't even fallen through yet to Nemo, as the first one finally did.

I did see something on the Nemo install wiki :

Originally Posted by

Quality/brand of the card; some cards have issues with the N900 and offer slow performance due to I/O errors.

But I have a hard time believing 2 cards, different vendors, both Samsung 8 GB, one class 10, one class 6, are both defect.

So there must be something else ...

UPDATE: now I'm having the thousands of scrolling errors on mmcblk0. Same error -110 sending/receiving ...

Last edited by Netweaver; 2012-02-02 at 13:05.

pali | # 99 | 2012-02-02, 13:15 | Report

Same problem with dmesg error messages. Similar errors I was getting in U-boot (when I tried to activate mmc) and in U-Boot was problem that mmc/sd card was not activated with twl4030 regulator.

So I think this is problem in Nemo kernel. (U-Boot maybe does not set same sd state as NOLO, but kernel should not depends on bad bootloader).

Can somebody ask maintainers/developers of Nemo kernel about this problem? At least default Nokia Maemo 2.6.28 has no problems with eMMC/SD memory.

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Netweaver | # 100 | 2012-02-02, 13:25 | Report

I've found this info on the error, talking about a kernel bug in the same kernel version as Nemo is using, also on armel architecture

http://groups.google.com/group/beagleboard/browse_thread/thread/87f191353f55ecc2?pli=1

Smoking gun ???

Something for Carsten and his team I guess.

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