Variable nomenclature is aligned with xen documentation.
https://xenbits.xen.org/docs/unstable/misc/xen-command-line.html
Currently it supports Xen Dom0 boot and can be extended for DomU
or Dom0less boot.
Signed-off-by: Sandeep Gundlupet Raju <[email protected]>
---
classes-recipe/xen-u-boot-scr.bbclass | 43
+++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
create mode 100644 classes-recipe/xen-u-boot-scr.bbclass
diff --git a/classes-recipe/xen-u-boot-scr.bbclass
b/classes-recipe/xen-u-boot-scr.bbclass
new file mode 100644
index 00000000..df8287e1
--- /dev/null
+++ b/classes-recipe/xen-u-boot-scr.bbclass
@@ -0,0 +1,43 @@
+# Copyright (C) 2024, Advanced Micro Devices, Inc. All rights
reserved.
+#
+# SPDX-License-Identifier: MIT
+#
+# This bbclass defines u-boot script variables required for xen
boot which can be
+# inherited u-boot boot scripts recipes and also allows to
configure these variables
+# from recipes, global and machine configurations files.
+
+# Variable nomenclature is aligned with
+# https://xenbits.xen.org/docs/unstable/misc/xen-command-line.html
+
+# Image Load Address for Xen Dom0 boot
+KERNEL_LOAD_ADDRESS ??= "0x00400000"
+XEN_LOAD_ADDRESS ??= "0x00200000"
+DEVICETREE_LOAD_ADDRESS ??= "0xC000000"
+RAMDISK_LOAD_ADDRESS ??= "0x2600000"
+
+# Xen boot image types.
+# KERNEL_IMAGETYPE: Specifies DomU kernel image file to be loaded
by u-boot.
+# XEN_IMAGETYPE: Specifies xen hypervisor binary to be loaded by
u-boot.
+# Example: xen or xen.efi or xen.gz
+# DOM0_RAMDISK_IMAGETYPE: Specifies DOM0 ramdisk to be used,
Example: cpio.gz
+XEN_IMAGETYPE ??= "xen"
+DOM0_RAMDISK_IMAGETYPE ??= "rootfs.cpio.gz"
+
+# Set the amount of memory for dom0 depending on total available
memory size(DDR).
+DOM0_MEM ??= "256M"
+
+# Specify which UART console Xen should use. You can sepecify the
devicetree
+# alias or full path to a node in the devicetree
+# XEN_SERIAL_CONSOLES = "/soc/serial@7e215040" or
+# XEN_SERIAL_CONSOLES = "serial0" or
+# XEN_SERIAL_CONSOLES = "/axi/serial@ff000000"
+XEN_SERIAL_CONSOLES ??= "/soc/serial@7e215040"
+
+# Specify additional command line arguments used for Xen and this
will be appended
+# to xen-bootargs cariable. This can also be used for passing debug
cmd line arguments.
+# Examples: XEN_CMDLINE_APPEND ?= "sched=credit loglvl=all
guest_loglvl=debug"
+XEN_CMDLINE_APPEND ??= "sync_console bootscrub=0"
+
+# Specify the max number of vcpus for dom0
+# Example usage: DOM0_MAX_VCPUS = "2" or DOM0_MAX_VCPUS = "2-4"
+DOM0_MAX_VCPUS ??= "1"
--
2.34.1
