ARM: dts: Add OpenBMC flash layout

This is a layout used by OpenBMC systems. It describes the fixed flash
layout of a 32MB mtd device.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>

diff --git a/arch/arm/boot/dts/openbmc-flash-layout.dtsi b/arch/arm/boot/dts/openbmc-flash-layout.dtsi
new file mode 100644 (file)
index 0000000..6c26524
--- /dev/null
+++ b/arch/arm/boot/dts/openbmc-flash-layout.dtsi
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+partitions {
+       compatible = "fixed-partitions";
+       #address-cells = <1>;
+       #size-cells = <1>;
+
+       u-boot@0 {
+               reg = <0x0 0x60000>;
+               label = "u-boot";
+       };
+
+       u-boot-env@60000 {
+               reg = <0x60000 0x20000>;
+               label = "u-boot-env";
+       };
+
+       kernel@80000 {
+               reg = <0x80000 0x440000>;
+               label = "kernel";
+       };
+
+       rofs@c0000 {
+               reg = <0x4c0000 0x1740000>;
+               label = "rofs";
+       };
+
+       rwfs@1c00000 {
+               reg = <0x1c00000 0x400000>;
+               label = "rwfs";
+       };
+};