meta-xilinx: Restructuring meta-xilinx to support multiple layers

As discussed previously on mailing list, we are proceeding with layer
restructuring. For rocko release we will have the following layers

meta-xilinx
        ->meta-xilinx-bsp (current meta-xilinx)
        ->meta-xilinx-contrib

In the subsequent releases we will add other layers from Xilinx
meta-xilinx
        ->meta-xilinx-bsp (current meta-xilinx)
        ->meta-petalinux
        ->meta-xilinx-tools
        ->meta-xilinx-contrib

This will provide one clone to get all the required meta layers from
Xilinx for a complete solution, and the users can blacklist any layer
which they don't want to use using bblayer.conf.
This will enables us to help our vendors/partners to add their reference
designs, board definitions etc.

Recipe changes :
 * Move reference design zybo-linux-bd.bb to meta-xilinx-contrib
 * Move kernel patches realted to zybo-linux-bd-zynq7 board to
   meta-xilinx-contrib
 * Update README

Signed-off-by: Manjukumar Matha <manjukumar.harthikote-matha@xilinx.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/meta-xilinx-bsp/classes/xilinx-platform-init.bbclass b/meta-xilinx-bsp/classes/xilinx-platform-init.bbclass
new file mode 100644
index 00000000..5d099500
--- /dev/null
+++ b/meta-xilinx-bsp/classes/xilinx-platform-init.bbclass
@@ -0,0 +1,14 @@
+# This class should be included by any recipe that wants to access or provide
+# the platform init source files which are used to initialize a Zynq or ZynqMP
+# SoC.
+
+# Define the path to the xilinx platform init code/headers
+PLATFORM_INIT_DIR ?= "/usr/src/xilinx-platform-init"
+
+PLATFORM_INIT_STAGE_DIR = "${STAGING_DIR_HOST}${PLATFORM_INIT_DIR}"
+
+# Target files use for platform init
+PLATFORM_INIT_FILES ?= ""
+PLATFORM_INIT_FILES_zynq = "ps7_init_gpl.c ps7_init_gpl.h"
+PLATFORM_INIT_FILES_zynqmp = "psu_init_gpl.c psu_init_gpl.h"
+