[Buildroot] [PATCH v4 2/4] package/xen: add custom version support

[Neal Frager via buildroot <buildroot@buildroot.org>]

Add the ability to configure specific Xen versions while leaving the default
version unchanged to avoid breaking any builds already using Xen 4.21.1.

To test:
BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_AARCH64_GLIBC_STABLE=y
BR2_PACKAGE_XEN=y

Signed-off-by: Neal Frager <neal.frager@amd.com>
Tested-by: Matthew Weber <mathew.l.weber3@boeing.com>
Prior test details: https://gist.github.com/matthew-l-weber/c17f14a3793ccee440a383e4177ff3db
Reviewed-by: John Ernberg <john.ernberg@actia.se>

---
V1->V2:
- rebased to updated master branch
- removed the line move of the XEN_SITE definition
V2->V4:
- merged into new patch series as the second patch
---
 package/xen/Config.in | 25 +++++++++++++++++++++++++
 package/xen/xen.mk    |  2 +-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/package/xen/Config.in b/package/xen/Config.in
index d63a3f6002..e50b232f0a 100644
--- a/package/xen/Config.in
+++ b/package/xen/Config.in
@@ -10,6 +10,31 @@ config BR2_PACKAGE_XEN
 
 if BR2_PACKAGE_XEN
 
+choice
+	prompt "Xen Version"
+	help
+	  Select the specific Xen version you want to use
+
+config BR2_PACKAGE_XEN_LATEST_VERSION
+	bool "4.21.1"
+
+config BR2_PACKAGE_XEN_CUSTOM_VERSION
+	bool "Custom version"
+	help
+	  This option allows to use a specific official version
+
+endchoice
+
+config BR2_PACKAGE_XEN_CUSTOM_VERSION_VALUE
+	string "Xen version"
+	depends on BR2_PACKAGE_XEN_CUSTOM_VERSION
+
+config BR2_PACKAGE_XEN_VERSION
+	string
+	default "4.21.1"	if BR2_PACKAGE_XEN_LATEST_VERSION
+	default BR2_PACKAGE_XEN_CUSTOM_VERSION_VALUE \
+				if BR2_PACKAGE_XEN_CUSTOM_VERSION
+
 config BR2_PACKAGE_XEN_HYPERVISOR
 	bool "Xen hypervisor"
 	help
diff --git a/package/xen/xen.mk b/package/xen/xen.mk
index 75252d1123..51d51333ac 100644
--- a/package/xen/xen.mk
+++ b/package/xen/xen.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-XEN_VERSION = 4.21.1
+XEN_VERSION = $(call qstrip,$(BR2_PACKAGE_XEN_VERSION))
 XEN_SITE = https://downloads.xenproject.org/release/xen/$(XEN_VERSION)
 XEN_SELINUX_MODULES = systemd udev xen
 XEN_LICENSE = GPL-2.0
-- 
2.43.0

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