From: David Gibson <david@gibson.dropbear.id.au>
To: Scott Wood <scottwood@freescale.com>
Cc: linuxppc-dev@ozlabs.org, paulus@samba.org
Subject: Re: [PATCH 15/19] bootwrapper: Add initrd information to the device tree in ft_finalize().
Date: Wed, 14 Feb 2007 15:43:35 +1100 [thread overview]
Message-ID: <20070214044335.GA12402@localhost.localdomain> (raw)
In-Reply-To: <20070213160723.GC24815@ld0162-tx32.am.freescale.net>
On Tue, Feb 13, 2007 at 10:07:23AM -0600, Scott Wood wrote:
> On Tue, Feb 13, 2007 at 03:29:37PM +1100, David Gibson wrote:
> > Why is cuboot's malloc() allocating the flat tree in a place that's in
> > danger of being clobbered by the kernel in the first place?
>
> As the comment in cuboot.c explains, there's not enough room to do it any
> other way and still run on boards with only 8MiB of RAM -- the dts has to
> go above the wrapper image, and the "uncompressed" kernel has to go
> below, but the same heap is used for both. I believe there are some 8xx
> boards out there with only this much; even if not, 8xx currently only
> maps 8MiB by default. 8xx isn't supported by this patchset, but I'd like
> to support it eventually.
Hrm, ok. You may have seen in my Ebony patch series there's a patch
adding a bootwrapper platform_ops hook giving the address at which to
load the kernel. At present the wrapper still decompresses the kernel
to heap-allocated space, then moves it to the specified address,
however I'm hoping to write an improved version which decompresses
directly to the final location. That should address your problem
here, I believe.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
next prev parent reply other threads:[~2007-02-14 4:43 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-07 23:00 [PATCH 00/19] cuboot bootwrapper patchset Scott Wood
2007-02-07 23:01 ` [PATCH 01/19] bootwrapper: Add stddef.h to ops.h Scott Wood
2007-02-07 23:01 ` [PATCH 02/19] bootwrapper: Set -msoft-float and assembler target options Scott Wood
2007-02-07 23:01 ` [PATCH 03/19] bootwrapper: Remove OF-isms Scott Wood
2007-02-07 23:01 ` [PATCH 04/19] bootwrapper: Add ft_root_node() Scott Wood
2007-02-07 23:01 ` [PATCH 05/19] bootwrapper: Rename ft_node_add() to ft_get_phandle() Scott Wood
2007-02-07 23:01 ` [PATCH 06/19] bootwrapper: Make ft_get_phandle() accept and return NULL Scott Wood
2007-02-07 23:01 ` [PATCH 07/19] bootwrapper: Preserve the pp pointer in ft_make_space() when calling ft_reorder() Scott Wood
2007-02-07 23:01 ` [PATCH 08/19] bootwrapper: Modify *pp, not *p, in ft_shuffle() Scott Wood
2007-02-07 23:01 ` [PATCH 09/19] bootwrapper: Rename p and pp to anchor and anchorptr Scott Wood
2007-02-07 23:01 ` [PATCH 10/19] bootwrapper: Use map_string() instead of lookup_string() in ft_prop() Scott Wood
2007-02-07 23:01 ` [PATCH 11/19] bootwrapper: Add ft_find_device_rel() Scott Wood
2007-02-08 1:11 ` David Gibson
2007-02-08 17:14 ` Scott Wood
2007-02-07 23:01 ` [PATCH 12/19] bootwrapper: Refactor ft_get_prop() into internal and external functions Scott Wood
2007-02-07 23:01 ` [PATCH 13/19] bootwrapper: Make ft_get_parent() return a phandle, and NULL if already top-level Scott Wood
2007-02-07 23:01 ` [PATCH 14/19] bootwrapper: Add ft_find_node_by_prop_value() Scott Wood
2007-02-07 23:01 ` [PATCH 15/19] bootwrapper: Add initrd information to the device tree in ft_finalize() Scott Wood
2007-02-09 23:02 ` Mark A. Greer
2007-02-10 0:37 ` David Gibson
2007-02-12 16:42 ` Scott Wood
2007-02-13 4:29 ` David Gibson
2007-02-13 16:07 ` Scott Wood
2007-02-14 4:43 ` David Gibson [this message]
2007-02-07 23:01 ` [PATCH 16/19] bootwrapper: Make ft_create_node() pay attention to the parent parameter Scott Wood
2007-02-07 23:01 ` [PATCH 17/19] bootwrapper: Add dt_ops methods Scott Wood
2007-02-09 23:05 ` Mark A. Greer
2007-02-07 23:01 ` [PATCH 18/19] bootwrapper: Add xlate_reg(), and use it to find serial registers Scott Wood
2007-02-09 23:07 ` Mark A. Greer
2007-02-12 16:45 ` Scott Wood
2007-02-12 21:10 ` Josh Boyer
2007-02-13 4:30 ` David Gibson
2007-02-13 16:00 ` Scott Wood
2007-02-07 23:01 ` [PATCH 19/19] bootwrapper: compatibility layer for old U-Boots (a.k.a. cuImage, cuboot) Scott Wood
2007-02-08 21:15 ` David Gibson
2007-02-09 17:11 ` Scott Wood
2007-02-10 1:02 ` David Gibson
2007-02-12 16:52 ` Scott Wood
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