Re: Single zImage for Armadillo and KZM9G

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Simon,

On Wednesday 21 November 2012 09:47:14 Simon Horman wrote:
> On Wed, Nov 21, 2012 at 01:38:19AM +0100, Laurent Pinchart wrote:
> > Hello,
> > 
> > I've been trying to boot the same zImage on both Armadillo (r8a7740) and
> > KZM9G (sh73a0) and stumbled on CONFIG_MEMORY_START. Armadillo has the
> > memory start at 0x40000000 while KZM9G seems to reserver the first 16MB,
> > and thus starts at 0x41000000.
> > 
> > The memory address and size can be specified per-board in the device tree,
> > but a mismatch between the DT memory start and CONFIG_MEMORY_START
> > results in a pretty hard boot failure (tested on Armadillo).
> > 
> > Has anyone run into the same issue ? Pointers would be appreciated.
> 
> The most recent discussion of CONFIG_MEMORY_START that I am aware of was
> in a thread that stemmed from "[GIT,PULL] Renesas ARM-based SoC defconfig
> for v3.8"
> 
> https://patchwork.kernel.org/patch/1627511/
> 
> In short, it would be nice to get rid of CONFIG_MEMORY_START to allow,
> amongst other things, (valid) values to be read from DT. But there
> is some work to be done.

Thank you for the information. Is there anyone working (or planning to work in 
the near future) on this ?

-- 
Regards,

Laurent Pinchart