[PATCH v8 08/32] arm: xenguest_arm64: Add a empty devicetree file

[Simon Glass]

Add an empty version of this file, so that we can at least build this
board when devicetrees are required.

The real devicetree is created by the Xen project on-the-fly.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v8:
- Reword commit message to mention the dynamic devicetree

Changes in v7:
- Use 'empty' instead of 'fake'

 arch/arm/dts/Makefile            |  2 ++
 arch/arm/dts/xenguest-arm64.dts  | 15 +++++++++++++++
 configs/xenguest_arm64_defconfig |  2 +-
 3 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/dts/xenguest-arm64.dts

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index d53bae2c350..f6345988c8c 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1140,6 +1140,8 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt8516-pumpkin.dtb \
 	mt8518-ap1-emmc.dtb
 
+dtb-$(CONFIG_XEN) += xenguest-arm64.dtb
+
 dtb-$(CONFIG_TARGET_GE_BX50V3) += \
 	imx6q-bx50v3.dtb \
 	imx6q-b850v3.dtb \
diff --git a/arch/arm/dts/xenguest-arm64.dts b/arch/arm/dts/xenguest-arm64.dts
new file mode 100644
index 00000000000..d8734433763
--- /dev/null
+++ b/arch/arm/dts/xenguest-arm64.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Empty devicetree file for xenguest_arm64
+ *
+ * This is required to make the board build with CONFIG OF_SEPARATE
+ * Build instructions at xenguest_arm64.rst are inadequate for obtaining a real
+ * devicetree.
+ *
+ * Copyright 2021 Google LLC
+ */
+
+/dts-v1/;
+
+/ {
+};
diff --git a/configs/xenguest_arm64_defconfig b/configs/xenguest_arm64_defconfig
index 8d9d9133a2e..edce34346d3 100644
--- a/configs/xenguest_arm64_defconfig
+++ b/configs/xenguest_arm64_defconfig
@@ -3,7 +3,7 @@ CONFIG_POSITION_INDEPENDENT=y
 CONFIG_TARGET_XENGUEST_ARM64=y
 CONFIG_SYS_TEXT_BASE=0x40080000
 CONFIG_SYS_MALLOC_LEN=0x2000000
-CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_DEFAULT_DEVICE_TREE="xenguest-arm64"
 CONFIG_IDENT_STRING=" xenguest"
 CONFIG_SYS_LOAD_ADDR=0x40000000
 CONFIG_BOOTDELAY=10
-- 
2.34.1.173.g76aa8bc2d0-goog