armhf: highbank: relocate initrd to make room for a bigger kernel

[Paolo Pisati]

Our kernels are growing big, thus if we want to avoid vmlinuz stomp over initrd after decompression, we should relocate initrd leaving more room for a bigger kernel.

It already happens with our T/master generic kernel on highbank:

boot.scr:

echo Starting Ubuntu...
setenv bootargs console=ttyAMA0 nosplash
mw.l 800000 0 10000
scsi scan
ext2load scsi 0 0x800000 vmlinuz
ext2load scsi 0 0x1000000 initrd.img
bootz 0x800000 0x1000000:${filesize} 0x1000

...
[ 1.953323] scsi 2:0:0:0: Direct-Access ATA SAMSUNG SSD 830 CXM0 PQ: 0 ANSI: 5
[ 1.961785] sd 2:0:0:0: [sda] 250069680 512-byte logical blocks: (128 GB/119 GiB)
[ 1.961853] sd 2:0:0:0: Attached scsi generic sg0 type 0
[ 1.974782] sd 2:0:0:0: [sda] Write Protect is off
[ 1.979650] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.990153] sda: sda1 sda2 sda3 < sda5 sda6 >
[ 1.995656] sd 2:0:0:0: [sda] Attached SCSI disk
[ 2.300204] ata4: SATA link down (SStatus 0 SControl 300)
[ 2.644202] ata5: SATA link down (SStatus 0 SControl 300)
[ 2.649653] md: Waiting for all devices to be available before autodetect
[ 2.656454] md: If you don't use raid, use raid=noautodetect
[ 2.662474] md: Autodetecting RAID arrays.
[ 2.666573] md: Scanned 0 and added 0 devices.
[ 2.671014] md: autorun ...
[ 2.673805] md: ... autorun DONE.
[ 2.677180] RAMDISK: Couldn't find valid RAM disk image starting at 0.
...

while moving initrd futher up, fixes it:

boot.scr:

setenv bootargs console=ttyAMA0 nosplash
mw.l 800000 0 10000
scsi scan
ext2load scsi 0 0x800000 vmlinuz
ext2load scsi 0 0x2000000 initrd.img
bootz 0x800000 0x2000000:${filesize} 0x1000

ubuntu@c09:~$ uname -a
Linux c09 3.12.0-2-generic #7 SMP Tue Nov 12 12:50:26 UTC 2013 armv7l armv7l armv7l GNU/Linux

[Paolo Pisati (p-pisati)]

this fix should be propagated back to every Ubuntu release that will carry a modern, multiplatform, generic armhf kernel.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "bootscr.highbank.diff" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

[Paolo Pisati (p-pisati)]

i just encountered the same problem on Midway with a T kernel, and thus the same modification should be applied there.

[Launchpad Janitor (janitor)]

This bug was fixed in the package flash-kernel - 3.0~rc.4ubuntu45

---------------
flash-kernel (3.0~rc.4ubuntu45) trusty; urgency=low

  * bootscr.highbank: allow more space to load larger kernels (LP: #1250495)
 -- Adam Conrad <email address hidden> Wed, 11 Dec 2013 03:48:23 -0700

[Rolf Leggewie (r0lf)]

quantal has seen the end of its life and is no longer receiving any updates. Marking the quantal task for this ticket as "Won't Fix".

[Rolf Leggewie (r0lf)]

raring has seen the end of its life and is no longer receiving any updates. Marking the raring task for this ticket as "Won't Fix".

[Rolf Leggewie (r0lf)]

saucy has seen the end of its life and is no longer receiving any updates. Marking the saucy task for this ticket as "Won't Fix".

[Steve Langasek (vorlon)]

The Precise Pangolin has reached end of life, so this bug will not be fixed for that release