[PATCH] rfc v3: ARM: mach-shmobile: mackerel: Add zboot support

[Simon Horman]

On Thu, Dec 09, 2010 at 09:47:15AM +0900, Simon Horman wrote:
> When CONFIG_ZBOOT_ROM is selected, the resulting zImage file will be small
> boot loader and may be burned to rom or flash.
> 
> Compile tested only.

I now have access to a Mackerel board and have verified that
this patch works.

My verification method was to usa a hack; I removed the
SDRAM initialisation portion of head-mackerel.txt and
then booting the resulting zImage from uboot using:

=> bootp
=> go 0x42000000

This is the same method that I used to test the AP4 variant of this change.

Morimoto-san, could you test this by burning an image (without the above
hack) to Flash? I can provide an image or tree if that helps.

> This patch assumes that head-mackerel.txt will be the same as head-ap4evb.txt.
> I am waiting for verification of this.
> 
> This patch depends on
> * ARM: 6515/1: Add zboot support for SuperH Mobile ARM
>   (merged into the devel branch of Russel King's linux-2.6-arm tree)
> * ARM: 6514/1: mach-shmobile: Add zboot support for SuperH Mobile ARM
>   (merged into the devel branch of Russel King's linux-2.6-arm tree)
> * MACH_MACKEREL (3211) being present in arch/arm/tools/mach-types
> 
> v2:
> * Use head-mackerel.txt for Mackerel.
>   head-ap4evb.txt was used by mistake.
> 
> v3:
> * Actually make the change to use head-mackerel.txt
> 
> Cc: Magnus Damm <magnus.damm at gmail.com>
> Cc: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
> ---
>  .../mach-shmobile/include/mach/head-mackerel.txt   |   87 ++++++++++++++++++++
>  arch/arm/mach-shmobile/include/mach/zboot.h        |    3 +
>  2 files changed, 90 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/mach-shmobile/include/mach/head-mackerel.txt
>