dts: qcs6490-rb3gen2-u-boot: add override dtsi

For running U-Boot as primary bootloader we must define the memory
layout statically.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

diff --git a/arch/arm/dts/qcs6490-rb3gen2-u-boot.dtsi b/arch/arm/dts/qcs6490-rb3gen2-u-boot.dtsi
new file mode 100644 (file)
index 0000000..c3ec4a3
--- /dev/null
+++ b/arch/arm/dts/qcs6490-rb3gen2-u-boot.dtsi
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2024 Linaro Ltd.
+ */
+/ {
+       /* When running as the primary bootloader there is no prior
+        * stage to populate the memory layout for us. We *should*
+        * have two nodes here, but ABL does NOT like that.
+        * sooo we're stuck with this.
+        */
+       memory@80000000 {
+               device_type = "memory";
+               reg = <0 0x80000000 0 0x3A800000>,
+                     <0 0xC0000000 0 0x01800000>,
+                     <0 0xC3400000 0 0x3CC00000>,
+                     <1 0x00000000 1 0x00000000>;
+       };
+};
+
+// RAM Entry 0 : Base 0x0080000000  Size 0x003A800000
+// RAM Entry 1 : Base 0x00C0000000  Size 0x0001800000
+// RAM Entry 2 : Base 0x00C3400000  Size 0x003CC00000
+// RAM Entry 3 : Base 0x0100000000  Size 0x0100000000