From 4caa4e302c6a43edadcfe1bc4f0effc1de03c875 Mon Sep 17 00:00:00 2001
From: Brad Bishop <bradleyb@fuzziesquirrel.com>
Date: Wed, 25 Sep 2019 22:32:29 -0400
Subject: [PATCH] ARM: dts: Add 128MiB OpenBMC flash layout
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This is an alternate layout used by OpenBMC systems that require more
space on the BMC's flash. In addition to more space for the rootfs, it
supports a larger u-boot and Linux kernel FIT image.

The division of space is as follows:

 u-boot + env: 1MB
 kernel/FIT: 9MB
 rwfs: 86MB
 rofs: 32MB

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
---
 .../boot/dts/openbmc-flash-layout-128.dtsi    | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 arch/arm/boot/dts/openbmc-flash-layout-128.dtsi

diff --git a/arch/arm/boot/dts/openbmc-flash-layout-128.dtsi b/arch/arm/boot/dts/openbmc-flash-layout-128.dtsi
new file mode 100644
index 000000000000..05101a38c5bd
--- /dev/null
+++ b/arch/arm/boot/dts/openbmc-flash-layout-128.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 0xe0000>; // 896KB
+		label = "u-boot";
+	};
+
+	u-boot-env@e0000 {
+		reg = <0xe0000 0x20000>; // 128KB
+		label = "u-boot-env";
+	};
+
+	kernel@100000 {
+		reg = <0x100000 0x900000>; // 9MB
+		label = "kernel";
+	};
+
+	rofs@a00000 {
+		reg = <0xa00000 0x5600000>; // 86MB
+		label = "rofs";
+	};
+
+	rwfs@6000000 {
+		reg = <0x6000000 0x2000000>; // 32MB
+		label = "rwfs";
+	};
+};