Add Xilinx QEMU (qemu-system-xilinx-aarch64)

[stephanosio]

This commit adds Xilinx QEMU recipe for building AArch64 QEMU
(qemu-system-xilinx-aarch64).

The Xilinx QEMU fork is necessary because the arm-generic-fdt machine
type, required to properly emulate the Xilinx Zynq SoC, is only
availabe on it at this time.

For more details, refer to the issue #132.

Signed-off-by: Stephanos Ioannidis root@stephanos.io

[stephanosio]

@galak Do you have a planned date for Zephyr SDK 0.11.0 Alpha-4 release (and 0.11.0 as well)? I'd like to know when this could be available in the CI for Zephyr (zephyrproject-rtos/zephyr#20217 depends on it).

[galak]

@galak Do you have a planned date for Zephyr SDK 0.11.0 Alpha-4 release (and 0.11.0 as well)? I'd like to know when this could be available in the CI for Zephyr (zephyrproject-rtos/zephyr#20217 depends on it).

No specific date.

[galak]

In general looks good. Would like to reduce a few diffs between meta-zephyr-sdk/recipes-devtools/qemu/zephyr-qemu_git.bb or at least comment in either commit message or recipe as to why we differ.

[galak]

@galak Do you have a planned date for Zephyr SDK 0.11.0 Alpha-4 release (and 0.11.0 as well)? I'd like to know when this could be available in the CI for Zephyr (zephyrproject-rtos/zephyr#20217 depends on it).

No specific date.

I'll look to make alpha4 once we merge this PR and the openocd fix PR. Not aware of any other changes coming down the pipe.

[galak]

I reached out to the xilinx team that develops qemu and they suggested that we might just want to use the master branch. Can you see if that works for you -- and make any corresponding changes to the recipe files?

[stephanosio]

I reached out to the xilinx team that develops qemu and they suggested that we might just want to use the master branch. Can you see if that works for you -- and make any corresponding changes to the recipe files?

It looks like they just merged 4.1.50 (4.2 development tree) to master. I will update to this revision and make any relevant changes.

[galak]

It looks like they just merged 4.1.50 (4.2 development tree) to master. I will update to this revision and make any relevant changes.

thanks.