Add recipes and configuration files to add Yocto support
for FVP Base simulator from arm.
The following components are supported:
- trusted-firmware-a
- linux kernel (with specific kernel configuration and dts)
- xen (with meta-virtualization layer)
- unpacking and starting the generated image directly in Foundation
simulator (package must be download from www.arm.com website and put in
the directory downloads/licensed/silver.arm.com).

After building, the following command can be used to start a generated
image in fvp:
./tmp/deploy/tools/start-fvp-base.sh

Change-Id: I1759aecf32e84e25e813d7b0305f49616d4b47ef
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>

Add recipes and configuration files to add Yocto support
for Foundation armv8 simulator from arm.
The following components are supported:
- trusted-firmware-a
- linux kernel (with specific kernel configuration)
- xen (with meta-virtualization layer)
- unpacking and starting the generated image directly in Foundation
simulator (package must be download from www.arm.com website and put in
the directory downloads/licensed/silver.arm.com).

After building, the following command can be used to start a generated
image in foundation:
./tmp/deploy/tools/start-foundation-armv8.sh

Change-Id: Iade343c38f0799ee8523434d555cb3ca42068a86
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>

Fix TF-A recipe to only download mbedTLS when it is activated.
Allow user to modify TFA_BUILD_DIR and set BUILD_PLAT accordingly in
make arguments to properly set the build directory.

Change-Id: Ib53b245d4d3b2d62e41f0ef238ad03dc45bab056
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>

Also, removed empty README.md files (which were place holders for the
directories).

Change-Id: I1c1db95158f257015b5eb9f4a6f05219df489b4a
Signed-off-by: Jon Mason <jon.mason@arm.com>

Add a little more description for what belongs in meta-arm/meta-arm (per
feedback from Richard Purdie), and modify the max width to be 80
characters to improve readability.

Change-Id: I8f7b0598e3336132c2594c92cf3400dd5e216baf
Signed-off-by: Jon Mason <jon.mason@arm.com>

Create layer definition file for meta-arm-bsp sub-layer.

Change-Id: I305da32bf389b09750a721349fa0796c0b33b0ea
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>

Change-Id: Ic05d950971a5b161df1fafdcf6d3c01d9b3d5fb7
Signed-off-by: Vineeth Raveendran <vineeth.raveendran@arm.com>

Add a generic Trusted Firmware A recipe using TF-A version 2.1

Change-Id: I873509970bd44c6cfdaa0456516197a4eebf6ebd
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>

Add basic layer configuration file

Change-Id: I11b63d0bc74a33272feffeb73e6b0c6d717a259a
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>

Signed-off-by: Filipe Rinaldi <filipe.rinaldi@arm.com>

Add README and License Files in the root directory describing the layers
and process for interacting with the meta-arm layer.  Create the
directories for future layers (and add empty README files to force the
directories to be created by git).

Change-Id: I4d70759bf90b1c964e6d9040d145737b2f441205
Signed-off-by: Jon Mason <jon.mason@arm.com>