[Bug 1030594] [NEW] enable flat device tree support

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Dave Walker (davewalker):

Please add a build-dep on libfdt-dev, which will add flat device tree
support to qemu. This will let users pass the '-dtb' command line
option, allowing us to specify a device tree file. Though it is
supposedly possible to pass a dtb file to the instance by appending it
to the zImage, I've been unable to get this to work (even with
CONFIG_ARM_APPENDED_DTB=y). The -dtb method is more straightforward and
I've been able to boot a highbank target with it (and the patch
referenced in #1030588):

ubuntu at server-1343577662-az-3-region-a-geo-1:~$ sudo qemu-system-arm -nographic -M highbank -m 4089 -kernel ~/vmlinuz-3.2.0-2000-highbank -append console=ttyAMA0 -dtb ~/highbank.dtb 
l2x0_priv_write: Bad offset 900
l2x0_priv_write: Bad offset 904
Booting Linux on physical CPU 0
Linux version 3.2.0-2000-highbank (buildd at nikusui) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu3) ) #1-Ubuntu SMP PREEMPT Tue Mar 27 01:49:53 UTC 2012 (Ubuntu 3.2.0-2000.1-highbank 3.2.12)
CPU: ARMv7 Processor [410fc090] revision 0 (ARMv7), cr=10c5387d
[...]

** Affects: qemu-linaro (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: qemu-linaro (Ubuntu Precise)
     Importance: Undecided
         Status: New

** Affects: qemu-linaro (Ubuntu Quantal)
     Importance: Undecided
         Status: New

-- 
enable flat device tree support
https://bugs.launchpad.net/bugs/1030594
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