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From: rentao.bupt@gmail.com
To: Rob Herring <robh+dt@kernel.org>, Joel Stanley <joel@jms.id.au>,
	Andrew Jeffery <andrew@aj.id.au>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	openbmc@lists.ozlabs.org, taoren@fb.com
Cc: Tao Ren <rentao.bupt@gmail.com>
Subject: [PATCH v2 1/6] ARM: dts: Add Facebook BMC 128MB flash layout
Date: Thu,  5 Aug 2021 15:28:13 -0700	[thread overview]
Message-ID: <20210805222818.8391-2-rentao.bupt@gmail.com> (raw)
In-Reply-To: <20210805222818.8391-1-rentao.bupt@gmail.com>

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

This is the layout used by Facebook BMC systems. It describes the fixed
flash layout of a 128MB mtd device.

Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
---
 Changes in v2:
  - None.

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

diff --git a/arch/arm/boot/dts/facebook-bmc-flash-layout-128.dtsi b/arch/arm/boot/dts/facebook-bmc-flash-layout-128.dtsi
new file mode 100644
index 000000000000..7f3652dea550
--- /dev/null
+++ b/arch/arm/boot/dts/facebook-bmc-flash-layout-128.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@e0000 {
+		reg = <0xe0000 0x10000>;
+		label = "env";
+	};
+
+	/*
+	 * image metadata partition (64KB), used by Facebook internal
+	 * tools.
+	 */
+	image-meta@f0000 {
+		reg = <0xf0000 0x10000>;
+		label = "meta";
+	};
+
+	/*
+	 * FIT image: 119 MB.
+	 */
+	fit@100000 {
+		reg = <0x100000 0x7700000>;
+		label = "fit";
+	};
+
+	/*
+	 * "data0" partition (8MB) is used by Facebook BMC platforms as
+	 * persistent data store.
+	 */
+	data0@7800000 {
+		reg = <0x7800000 0x800000>;
+		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";
+	};
+};
-- 
2.17.1


  reply	other threads:[~2021-08-05 22:29 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05 22:28 [PATCH v2 0/6] ARM: dts: Add Facebook AST2600 BMCs rentao.bupt
2021-08-05 22:28 ` rentao.bupt [this message]
2021-08-05 22:28 ` [PATCH v2 2/6] ARM: dts: aspeed: wedge400: Use common flash layout rentao.bupt
2021-08-05 22:28 ` [PATCH v2 3/6] ARM: dts: aspeed: Common dtsi for Facebook AST2600 Network BMCs rentao.bupt
2021-08-05 22:28 ` [PATCH v2 4/6] ARM: dts: aspeed: Add Facebook Cloudripper (AST2600) BMC rentao.bupt
2021-08-13  1:29   ` Joel Stanley
2021-08-13  3:40     ` Tao Ren
2021-08-13  4:13       ` Joel Stanley
2021-08-13 14:45       ` Andrew Lunn
2021-08-14  5:22         ` Tao Ren
2021-08-14 15:26           ` Andrew Lunn
2021-08-17  0:01             ` Tao Ren
2021-08-05 22:28 ` [PATCH v2 5/6] ARM: dts: aspeed: Add Facebook Elbert " rentao.bupt
2021-08-05 22:28 ` [PATCH v2 6/6] ARM: dts: aspeed: Add Facebook Fuji " rentao.bupt

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