[Buildroot] [PATCH 1/1] configs/qemu: add DTB support for ARM Versatile PB

[Guillaume Delbergue]

Hi both,

The platform boots with or without DTB option (-dtb […]/versatile-pb.dtb) with this patch (tested with QEMU master on Ubuntu 14.04).
Of course, I can adjust README. But currently, even with this patch, README is still valid. If you don’t specify dtb, it will use ATAGS and boot.

PS : CONFIG_MACH_VERSATILE_DT ( != ARM_APPENDED_DTB) is not to support appended DTB to zImage. http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/mach-versatile/Kconfig

Regards,

Guillaume Delbergue

> On 25 Nov 2015, at 14:54, Gustavo Zacarias <gustavo at zacarias.com.ar> wrote:
> 
> On 25/11/15 10:48, Thomas Petazzoni wrote:
> 
>>> Add CONFIG_MACH_VERSATILE_DT to support Versatile platform from device tree
>>> 
>>> Signed-off-by: Guillaume Delbergue <guillaume.delbergue at greensocs.com>
>> 
>> Then maybe the board/qemu/arm-versatile/readme.txt file should be
>> updated to make use of the DTB ?
>> 
>> Gustavo ?
>> 
>> Thanks,
>> 
>> Thomas
> 
> Hi.
> Yes, definitely, since we don't default to any form of appended DTB for that defconfig the current instructions will probably result in a non-bootable scenario.
> Care to adjust this and send a new patch?
> You can look at the vexpress readme.txt (board/qemu/arm-vexpress/readme.txt) on how to adjust/use it, but in theory you already do that unless you changed the kernel output to appended zImage.
> Regards.

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