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ildar is offline ildar
2012-02-01 , 10:45
Posts: 20 | Thanked: 14 times | Joined on Oct 2011
#71
Originally Posted by Hurrian View Post
I found the problem with my crapola not working.
fatls mmc 1 was listing down my Music folder off my eMMC. What the actual ****? It might be because of damaged fat32 though.
Moved bootmenu files to ~/MyDocs/Music/ and it worked.

Would probably still be banging rocks together if not for the Gumstix wiki.
Have the same here. Details:
  1. 1. Have the healthy FAT at /home/user/MyDocs
  2. 2. U-boot shows default menu
  3. 3. U-boot console:
    Code:
    mmc init
mmc dev 1
fatls 1
    It shows the contents of /home/user/MyDocs/Text/0scraps/20111026223145
So U-boot indeed handles (v)FAT incorrectly.
My guess it is due to misaligned partition OR parted resize. I mean I used parted to resize /dev/mmcblk0p1 so that I could put another system on eMMC.

Any ideas howto fix?
 

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Netweaver is offline Netweaver
2012-02-01 , 14:12
Posts: 323 | Thanked: 180 times | Joined on Oct 2009 @ Gent, Belgium
#72
when creating the bootmenu.d file entry for the latest Nemo kernel, what extra boot arguments/options one needs enter in the file to boot Nemo from the SD card ?

or, what manual commands could be tried in the uboot console to boot nemo ?

stskeeps would be the best to answer this I guess, as he was the first person able to create the PR1.3+uboot kernel, able to boot from the external MMC.

Thanks.
Last edited by Netweaver; 2012-02-01 at 14:18.
 

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Rob1n is offline Rob1n
2012-02-01 , 14:32
Posts: 3,617 | Thanked: 2,412 times | Joined on Nov 2009 @ Cambridge, UK
#73
Originally Posted by Netweaver View Post
when creating the bootmenu.d file entry for the latest Nemo kernel, what extra boot arguments/options one needs enter in the file to boot Nemo from the SD card ?
All I had to pass in was the normal root=/dev/mmcblk0pX argument to tell it which partition to boot to.
 

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pali is offline pali
2012-02-01 , 15:16
Posts: 2,154 | Thanked: 8,464 times | Joined on May 2010
#74
Here are all supported variables for bootmenu entry:

ITEM_NAME=""
ITEM_DEVICE=""
ITEM_FSTYPE=""
ITEM_KERNEL=""
ITEM_INITRD=""
ITEM_SCRIPT=""
ITEM_CMDLINE=""
ITEM_USEATAG=""

Try to play with it, maybe you can get nemo booting. Now I do not have time to playing with it.

I tried this (stored kernel uImage-nemo in MyDocs) but not worked:
ITEM_NAME="Nemo"
ITEM_KERNEL="uImage-nemo"
ITEM_DEVICE="${INT_CARD}p1"
ITEM_FSTYPE="fat"
 

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Rob1n is offline Rob1n
2012-02-01 , 16:58
Posts: 3,617 | Thanked: 2,412 times | Joined on Nov 2009 @ Cambridge, UK
#75
Originally Posted by pali View Post
Here are all supported variables for bootmenu entry:

ITEM_NAME=""
ITEM_DEVICE=""
ITEM_FSTYPE=""
ITEM_KERNEL=""
ITEM_INITRD=""
ITEM_SCRIPT=""
ITEM_CMDLINE=""
ITEM_USEATAG=""

Try to play with it, maybe you can get nemo booting. Now I do not have time to playing with it.

I tried this (stored kernel uImage-nemo in MyDocs) but not worked:
ITEM_NAME="Nemo"
ITEM_KERNEL="uImage-nemo"
ITEM_DEVICE="${INT_CARD}p1"
ITEM_FSTYPE="fat"
I think you need to add:
ITEM_CMDLINE="root=${EXT_CARD}p6"

or wherever the Nemo partition is.
 

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[DarkGUNMAN] is offline [DarkGUNMAN]
2012-02-01 , 17:06
Posts: 309 | Thanked: 456 times | Joined on Jan 2010
#76
Originally Posted by Rob1n View Post
I think you need to add:
ITEM_CMDLINE="root=${EXT_CARD}p6"

or wherever the Nemo partition is.
How did you build the Nemo uImage to add to the boot entry?
Is it the same procedure used for a merged image (uboot + p49) and setting that one instead?

I would guess this will allow more than one O/S can be loaded from several partitions on the sdcard?
Last edited by [DarkGUNMAN]; 2012-02-01 at 17:13.
 
pali is offline pali
2012-02-01 , 17:26
Posts: 2,154 | Thanked: 8,464 times | Joined on May 2010
#77
Originally Posted by Rob1n View Post
I think you need to add:
ITEM_CMDLINE="root=${EXT_CARD}p6"

or wherever the Nemo partition is.
!! ${EXT_CARD} is variable ONLY for ITEM_DEVICE !!

in ITEM_CMDLINE you should use root=/dev/mmcblk...
 
pali is offline pali
2012-02-01 , 17:27
Posts: 2,154 | Thanked: 8,464 times | Joined on May 2010
#78
Originally Posted by [DarkGUNMAN] View Post
How did you build the Nemo uImage to add to the boot entry?
Is it the same procedure used for a merged image (uboot + p49) and setting that one instead?

I would guess this will allow more than one O/S can be loaded from several partitions on the sdcard?
store kernel image (must be in uImage format) to internal/external mmc and set correct variables.

script u-boot-update-bootmenu will then create correct bootmenu configuration
 
plipp is offline plipp
2012-02-01 , 18:11
Posts: 4 | Thanked: 2 times | Joined on Feb 2012
#79
The nemo mobile project releases ready made raw images that you write to an sd card. I should be configured as follows:
partition 1: root filesystem
partition 2: swap
partition 3: /boot

So something like this:
ITEM_NAME="Nemo"
ITEM_KERNEL="uImage"
ITEM_DEVICE="${EXT_CARD}p3"
ITEM_FSTPE="fat"
ITEM_CMDLINE="root=/dev/mmcblk1p1"

Should work, right? But nope, it loads the right kernel (as does run sdboot in the console), but then it just shuts down.

Any suggestions?
 

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pali is offline pali
2012-02-01 , 18:49
Posts: 2,154 | Thanked: 8,464 times | Joined on May 2010
#80
Originally Posted by plipp View Post
The nemo mobile project releases ready made raw images that you write to an sd card. I should be configured as follows:
partition 1: root filesystem
partition 2: swap
partition 3: /boot

So something like this:
ITEM_NAME="Nemo"
ITEM_KERNEL="uImage"
ITEM_DEVICE="${EXT_CARD}p3"
ITEM_FSTPE="fat"
ITEM_CMDLINE="root=/dev/mmcblk1p1"

Should work, right? But nope, it loads the right kernel (as does run sdboot in the console), but then it just shuts down.

Any suggestions?
I had same problem when tested.
 
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