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[XEN,v5,03/17] xen/arm: Add CONFIG_OVERLAY_DTB

Message ID 20230411191636.26926-22-vikram.garhwal@amd.com (mailing list archive)
State New, archived
Headers show
Series None | expand

Commit Message

Vikram Garhwal April 11, 2023, 7:16 p.m. UTC 
Introduce a config option where the user can enable support for adding/removing
device tree nodes using a device tree binary overlay.

Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
---
 SUPPORT.md           | 6 ++++++
 xen/arch/arm/Kconfig | 5 +++++
 2 files changed, 11 insertions(+)
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Patch

diff --git a/SUPPORT.md b/SUPPORT.md
index aa1940e55f..0a31f40af4 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -822,6 +822,12 @@  No support for QEMU backends in a 16K or 64K domain.
 
     Status: Supported
 
+### Device Tree Overlays
+
+Add/Remove device tree nodes using a device tree overlay binary(.dtbo).
+
+    Status: Supported for ARM
+
 ### ARM: Guest ACPI support
 
     Status: Supported
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 239d3aed3c..1fe3d698a5 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -53,6 +53,11 @@  config HAS_ITS
         bool "GICv3 ITS MSI controller support (UNSUPPORTED)" if UNSUPPORTED
         depends on GICV3 && !NEW_VGIC && !ARM_32
 
+config OVERLAY_DTB
+	bool "DTB overlay support (UNSUPPORTED)" if UNSUPPORTED
+	help
+	  Dynamic addition/removal of Xen device tree nodes using a dtbo.
+
 config HVM
         def_bool y