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maemo.org - Talk (https://talk.maemo.org/index.php)
-   MeeGo / Harmattan (https://talk.maemo.org/forumdisplay.php?f=45)
-   -   U-boot is now in extras-devel (https://talk.maemo.org/showthread.php?t=64921)

Devrim 2010-11-14 13:53
Re: U-boot is now in extras-devel
 
Ok the solution is
Boot the stock kernel first before you reinstall kernel flasher

Fabry 2010-12-30 02:04
Re: U-boot is now in extras-devel
 
Quote:
Originally Posted by Matan (Post 865884)
Did you leave maemo by reboot?

I find that if I reboot, mmc1 is not recognized, if I power off, and then power on with the power key, mmc1 is recognized.

mmc2 is even more problematic. It appears to work once after maemo, but If I boot from u-boot (by the command reset, or letting the watchdog boot), it won't recognize it again.
Your u-boot.0x38000 (from repository) has eMMC (mmc2) code ?
I have never seen internal memory during my use of u-boot so I ask if it is due to version I use

Fabry 2010-12-30 02:06
Re: U-boot is now in extras-devel
 
Quote:
Originally Posted by e-yes (Post 865425)
>* rebuilt head nitdroid 2.6.28 06 kernel in scratchbox adding MMC and ext2/3/4 support
>* copied lib/modules, lib/firmware and /dev from maemo in the nitdroid partition
>* booted with args root=/dev/mmcblk0p2 rootwait

>I may see the little "ANDROID" banner down on the fb console, then the screen clears and the system hangs.
If you have adb installed, run 'adb logcat', it's useful for troubleshooting in Android.

>I suppose that some preinit logic has to be moved from maemo/multiboot to the nitdroid partition,
>but really lack knowledge and time! anyone helping?
Yes, multiboot loads kernel modules (list is in /lib/modules/2.6.28.NIT06/modules.boot file). Solution for problem: load modules from /init.nokia.rc script ('on boot' section).
see also: http://code.google.com/p/nitdroid-v2...s/detail?id=41

>Can this be taken to mean the NITDroid team is taking an interest in seeing what can be done with adding uboot support to NITDroid?
Yes. I've got an idea about combining u-boot and multiboot... instead of flashing, multiboot should write boot.scr for u-boot (and then reboots, as usual).
Are there news on u-boot with NitDroid ?

Fabry 2010-12-30 02:32
Re: U-boot is now in extras-devel
 
Quote:
Originally Posted by RobbieThe1st (Post 865611)
I haven't read -everything-, but before I install this:
Is there a way to create a boot option that launches a shell-script with the rootfs mounted? I'm looking for a way to make BackupMenu compatible with U-boot.
Also, can I use a shell-script to start the various OS's? I'd like to see about making a GRUB-style boot menu.
U-Boot can load and boot a kernel plus an initrd (ramdisk) file.

When a Kernel starts with an initrd usually executes /linuxrc file (script) which must be present on ramdisk

So theorically should be simple to convert BackupMenu V2, which already use a ramdisk internally, to use U-Boot

Matan 2010-12-30 09:00
Re: U-boot is now in extras-devel
 
Quote:
Originally Posted by Fabry (Post 907160)
Your u-boot.0x38000 (from repository) has eMMC (mmc2) code ?
Yes. But as I said it does not setup something correctly, so it only works after maemo sets it up. If you reset the CPU from within u-boot (or let the watchdog do it for you), then u-boot comes up again, but does not recognise the internal mmc.

I did not check if after nitdroid or meego the internal mmc is recognised.

Fabry 2010-12-30 12:19
Re: U-boot is now in extras-devel
 
Quote:
Originally Posted by Matan (Post 907335)
Yes. But as I said it does not setup something correctly, so it only works after maemo sets it up. If you reset the CPU from within u-boot (or let the watchdog do it for you), then u-boot comes up again, but does not recognise the internal mmc.

I did not check if after nitdroid or meego the internal mmc is recognised.
But following this procedure theorically mmc2 should be shown:
  • Power off / shutdown Maemo
  • Power On N900 with keyboard opened
  • Press a key to stop autoboot
  • Type mmc init

Instead I always obtain "No mmc card" or "mmc1 is available" (if SD is present).
Where I am wrong ?

Matan 2010-12-30 12:51
Re: U-boot is now in extras-devel
 
u-boot works a bit differently. If you want to use the second card, it needs to be explicit:

mmc init 2

Fabry 2010-12-30 13:58
Re: U-boot is now in extras-devel
 
Quote:
Originally Posted by Matan (Post 907524)
u-boot works a bit differently. If you want to use the second card, it needs to be explicit:

mmc init 2
So "mmc init" without number is equal to "mmc init 1" and not to "mmc init all" as I wrongly supposed
And even without SD card inserted eMMC is always mmc2 and it not become mmc1 (first and only mmc present)


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