README.md: Add Xen INITRD image creation steps

Add Xen INITRD image creation steps for JTAG or SD INITRD
boot modes.

Signed-off-by: Sandeep Gundlupet Raju <sandeep.gundlupet-raju@amd.com>
Signed-off-by: Mark Hatle <mark.hatle@amd.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/meta-xilinx-virtualization/README.md b/meta-xilinx-virtualization/README.md
index ad6d4ada..5b66ea38 100644
--- a/meta-xilinx-virtualization/README.md
+++ b/meta-xilinx-virtualization/README.md
@@ -36,6 +36,17 @@ ENABLE_XEN_UBOOT_SCR = "1"
 ENABLE_XEN_DTSI = "1"
 ENABLE_XEN_QEMU_DTSI = "1"
 
+# Default Xen Serial Console is serial0, if you are using serial1 then set as show below.
+XEN_SERIAL_CONSOLES = "serial1"
+
+# Variables for Xen JTAG or SD INITRD boot modes but this is not required for SD WIC image.
+IMAGE_FSTYPES += "cpio.gz"
+RAMDISK_IMAGE = "rootfs.cpio.gz"
+
+# Variables for Xen SD WIC image boot flow.
+IMAGE_FSTYPES += "wic"
+WKS_FILES = "xilinx-default-sd.wks"
+
 DISTRO_FEATURES:append = " multiarch security tpm virtualization vmsep xen"
 
 IMAGE_FEATURES += "ssh-server-openssh"