linux-kernel - [PATCH v2 4/9] ARM: dts: aspeed: Add facebook-bmc-flash-layout-128-data64.dtsi

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Message-ID: <20250706042404.138128-5-rentao.bupt@gmail.com>
Date: Sat,  5 Jul 2025 21:23:54 -0700
From: rentao.bupt@...il.com
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Joel Stanley <joel@....id.au>,
	Andrew Jeffery <andrew@...econstruct.com.au>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org,
	Andrew Lunn <andrew@...n.ch>,
	Tao Ren <taoren@...a.com>
Cc: Tao Ren <rentao.bupt@...il.com>
Subject: [PATCH v2 4/9] ARM: dts: aspeed: Add facebook-bmc-flash-layout-128-data64.dtsi

From: Tao Ren <rentao.bupt@...il.com>

Add facebook-bmc-flash-layout-128-data64.dts (with 64MB datastore) to be
used by Meta Network BMC platforms.

Signed-off-by: Tao Ren <rentao.bupt@...il.com>
---
Changes in v2:
  - None (the patch is introduced in v2 per Andrew's suggestion).

 .../facebook-bmc-flash-layout-128-data64.dtsi | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/facebook-bmc-flash-layout-128-data64.dtsi

diff --git a/arch/arm/boot/dts/aspeed/facebook-bmc-flash-layout-128-data64.dtsi b/arch/arm/boot/dts/aspeed/facebook-bmc-flash-layout-128-data64.dtsi
new file mode 100644
index 000000000000..efd92232cda2
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/facebook-bmc-flash-layout-128-data64.dtsi
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (c) 2020 Facebook Inc.
+
+partitions {
+	compatible = "fixed-partitions";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	/*
+	 * u-boot partition: 896KB.
+	 */
+	u-boot@0 {
+		reg = <0x0 0xe0000>;
+		label = "u-boot";
+	};
+
+	/*
+	 * u-boot environment variables: 64KB.
+	 */
+	u-boot-env@...00 {
+		reg = <0xe0000 0x10000>;
+		label = "env";
+	};
+
+	/*
+	 * image metadata partition (64KB), used by Facebook internal
+	 * tools.
+	 */
+	image-meta@...00 {
+		reg = <0xf0000 0x10000>;
+		label = "meta";
+	};
+
+	/*
+	 * FIT image: 63 MB.
+	 */
+	fit@...000 {
+		reg = <0x100000 0x3f00000>;
+		label = "fit";
+	};
+
+	/*
+	 * "data0" partition (64MB) is used by Facebook BMC platforms as
+	 * persistent data store.
+	 */
+	data0@...0000 {
+		reg = <0x4000000 0x4000000>;
+		label = "data0";
+	};
+
+	/*
+	 * Although the master partition can be created by enabling
+	 * MTD_PARTITIONED_MASTER option, below "flash0" partition is
+	 * explicitly created to avoid breaking legacy applications.
+	 */
+	flash0@0 {
+		reg = <0x0 0x8000000>;
+		label = "flash0";
+	};
+};
-- 
2.47.1