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[73.252.146.110]) by smtp.gmail.com with ESMTPSA id k37sm1038671pgm.84.2021.07.28.16.38.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jul 2021 16:38:06 -0700 (PDT) From: rentao.bupt@gmail.com To: Rob Herring , Joel Stanley , Andrew Jeffery , 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 Subject: [PATCH 1/6] ARM: dts: Add Facebook BMC 128MB flash layout Date: Wed, 28 Jul 2021 16:37:50 -0700 Message-Id: <20210728233755.17963-2-rentao.bupt@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210728233755.17963-1-rentao.bupt@gmail.com> References: <20210728233755.17963-1-rentao.bupt@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210728_163807_925706_03C7879F X-CRM114-Status: GOOD ( 16.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Tao Ren 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 --- .../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"; + }; +};