[Angstrom-devel] [Test fodder] initramfs images for h2200, h3900, h5000 and hx4700

[Michal Panczyk]

This helps with the menu - it gets reduced to 3 positions. jffs nfs and shell.
But I was not able to boot form mdt1 - it is looking for mtdblock1
Message read from LCD :
ROOT_DEVICE=mtdblock1
CMDLINE=keepinitrd root=mtdblock1
....
(SNIP) loading modules
....
"No valid root device was specified. Please add root=/dev/something to
the kernel command line and try again."

About the patch :
We want to skip blockdevices and boot form mtdX - don't we ?
Maybe the section
" if [ "$fstype" == "(jffs2)" ]; then
#       ROOT_FSTYPE="jffs2"
        ROOT_DEVICE="$dev"
 fi"
Should somehow compare the partitions numbers ? mtdblock1 should go to
mtd1 and so on... Just haven't figured out how to do it in smart way
...

Lack of console is annoying too.
Is boot_root() section init.sh (in packages/initrdscripts/files/)
responsible for that ?
"cd $BOOT_ROOT
 exec switch_root -c /dev/console $BOOT_ROOT /sbin/init
"
How about changing /dev/console to something else (ie. ttyS0 ? ).

Another thing that has crossed my mind today - LAB has nice feature -
it there is no action taken it automatically scans for zImage and
tries to boot from media that provides it. It would be nice too -
especially after 100th boot when you don't want to choose again the
proper device to boot from...

>  From: Koen Kooi <koen at dominion.kabel.utwente.nl>
>  Subject: Re: [Angstrom-devel] [Test fodder] initramfs images for
>         h2200, h3900, h5000 and hx4700
>  -----BEGIN PGP SIGNED MESSAGE-----
>  Hash: SHA1
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>  Michal Panczyk schreef:
>
>
>  | At this point - how to get params working out of the box? Some kind of
>  | syncing between initramfs kernel and regular kernel is needed - get
>  | both of them to support mtd1. Or maybe it is in the boot script
>  | waitnig to pass the root value as /dev/$1 or something like that ?
>
>  See (thunderbird damaged) patch at the bottom
>
>  | Anther thing in that matter :
>  | How to get the second kernel (or kexec - i don't know which one is it)
>  | to be more talkative. Console gets silent after :
>
>  I noticed that as well, it would be nice if boot messages can go over
>  serial, since psplash obscures them anyway.
>
>  | As it goes for the menu it can see following choices:
>  | 0 : mtdblock0 (unknown)
>  | 1 : mtdblock1 (jffs2)
>  | 2 :  mtdblock2 (unknown)
>  | 3 :  mtdblock3 (unknown)
>  | 4 : NFS (nfsroot=192.168.2.200:/srv/nfs/oe/image)
>  | 5 : shell
>  |
>  | Values 0 and 3 should get removed.
>
>  I think uncommenting line 85 of the bootmenu script would accomplish
>  that (see patch).
>
>  | SD boot should be added.
>
>  AIUI that gets added when it detects an sd card, so something else is wrong.
>
>  | A reset option would be nice too.
>  |
>  | Where in oe is the script controlling that menu ?
>
>  org.openembedded.dev/packages/initrdscripts/files/30-bootmenu.sh
>
>  | The boot process:
>  | I chose "1" and the screen blanked. Nothing else happened until now. I
>  | am not sure if I did everything as it was supposed to be done. Judging
>  | form Koen's experience the new zImage should just be linked to old
>  | zImage in /boot dir. And that didn't work form me.
>  |
>  | The choice process itself is kind a hard - there are debug messages
>  | comming in from the keys driver that make the screen unreadable, but
>  | that is a different story.
>
>  That's probably a simple kernel patch, Paul, Milan?
>
>  As promised, the totally untested patch:
>
>
>  # old_revision [16f0fa7ec858ba228dd9d241b0cff7a309a42dff]
>  #
>  # patch "packages/initrdscripts/files/30-bootmenu.sh"
>  #  from [b378e73bcd2daa97bd9e9134000a2ade7fe2538f]
>  #    to [5d48cde70bc16d340f2c5ad3ec825874bec7c228]
>  #
>  ============================================================
>  - --- packages/initrdscripts/files/30-bootmenu.sh
>  b378e73bcd2daa97bd9e9134000a2ade7fe2538f
>  +++ packages/initrdscripts/files/30-bootmenu.sh
>  5d48cde70bc16d340f2c5ad3ec825874bec7c228
>  @@ -82,7 +82,7 @@ while read maj min nblk dev; do
>
>  ~     get_partition_type
>  ~     if [ "$fstype" != "ext2" -a "$fstype" != "ext3" -a "$fstype" !=
>  "vfat" -a "$fstype" != "jffs2" ]; then
>  - -#      continue
>  +       continue
>  ~        true
>  ~     fi
>
>  @@ -158,6 +158,7 @@ else
>  ~     # jffs2 is not recognized by mount automagically
>  ~     if [ "$fstype" == "(jffs2)" ]; then
>  ~        ROOT_FSTYPE="jffs2"
>  +        ROOT_DEVICE="$dev"
>  ~     fi
>  ~     CMDLINE="$CMDLINE root=$ROOT_DEVICE"
>  ~ fi
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-- 
Best regards
Michal Panczyk