In order for u-boot to work on Nios II architecture,
the device tree file requires adding pre-relocation
flag to the CPU node.

Patch is tested on 10m50 board. Pass booting up
Linux.

[YOCTO #11628]

Signed-off-by: Gan, Yau Wai <yau.wai....@intel.com>
---
 .../u-boot/files/10m50-update-device-tree.patch    | 28 ++++++++++++++++++++++
 meta/recipes-bsp/u-boot/u-boot-common_2017.07.inc  |  1 +
 2 files changed, 29 insertions(+)
 create mode 100644 meta/recipes-bsp/u-boot/files/10m50-update-device-tree.patch

diff --git a/meta/recipes-bsp/u-boot/files/10m50-update-device-tree.patch 
b/meta/recipes-bsp/u-boot/files/10m50-update-device-tree.patch
new file mode 100644
index 0000000..841953c
--- /dev/null
+++ b/meta/recipes-bsp/u-boot/files/10m50-update-device-tree.patch
@@ -0,0 +1,28 @@
+Nios II for MAX10 10m50 board requires update to 
+its device tree to enable CPU driver during
+u-boot pre-relocation. This patch tag the CPU 
+with dm-pre-reloc flag.
+
+Upstream-Status: Submitted
+
+Signed-off-by: Gan, Yau Wai <yau.wai....@intel.com>
+
+---
+ arch/nios2/dts/10m50_devboard.dts | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/arch/nios2/dts/10m50_devboard.dts 
b/arch/nios2/dts/10m50_devboard.dts
+index 05eac30..461ae68 100644
+--- a/arch/nios2/dts/10m50_devboard.dts
++++ b/arch/nios2/dts/10m50_devboard.dts
+@@ -19,6 +19,7 @@
+               #size-cells = <0>;
+ 
+               cpu: cpu@0 {
++                      u-boot,dm-pre-reloc;
+                       device_type = "cpu";
+                       compatible = "altr,nios2-1.1";
+                       reg = <0x00000000>;
+-- 
+2.7.4
+
diff --git a/meta/recipes-bsp/u-boot/u-boot-common_2017.07.inc 
b/meta/recipes-bsp/u-boot/u-boot-common_2017.07.inc
index f27989d..e37f5fd 100644
--- a/meta/recipes-bsp/u-boot/u-boot-common_2017.07.inc
+++ b/meta/recipes-bsp/u-boot/u-boot-common_2017.07.inc
@@ -11,6 +11,7 @@ SRCREV = "d85ca029f257b53a96da6c2fb421e78a003a9943"
 
 SRC_URI = "git://git.denx.de/u-boot.git \
     file://MPC8315ERDB-enable-DHCP.patch \
+    file://10m50-update-device-tree.patch \
 "
 
 S = "${WORKDIR}/git"
-- 
2.7.4

-- 
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