ARM: dts: Add openbmc-flash-layout-64-alt.dtsi

Add openbmc-flash-layout-64-alt.dtsi to describe the partitions of the
secondary flash for OpenBMC's 64M static layout.
The layout is the same as openbmc-flash-layout-64.dtsi and the labels
are prepended with "alt-" for the partitions.

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Reviewed-by: Patrick Williams <patrick@stwcx.xyz>
Link: https://lore.kernel.org/r/20211210093443.2140557-1-yulei.sh@bytedance.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

diff --git a/arch/arm/boot/dts/openbmc-flash-layout-64-alt.dtsi b/arch/arm/boot/dts/openbmc-flash-layout-64-alt.dtsi
new file mode 100644 (file)
index 0000000..6505258
--- /dev/null
+++ b/arch/arm/boot/dts/openbmc-flash-layout-64-alt.dtsi
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Bytedance.
+ */
+
+partitions {
+       compatible = "fixed-partitions";
+       #address-cells = <1>;
+       #size-cells = <1>;
+
+       u-boot@0 {
+               reg = <0x0 0xe0000>; // 896KB
+               label = "alt-u-boot";
+       };
+
+       u-boot-env@e0000 {
+               reg = <0xe0000 0x20000>; // 128KB
+               label = "alt-u-boot-env";
+       };
+
+       kernel@100000 {
+               reg = <0x100000 0x900000>; // 9MB
+               label = "alt-kernel";
+       };
+
+       rofs@a00000 {
+               reg = <0xa00000 0x2000000>; // 32MB
+               label = "alt-rofs";
+       };
+
+       rwfs@6000000 {
+               reg = <0x2a00000 0x1600000>; // 22MB
+               label = "alt-rwfs";
+       };
+};