ARM: dts: Add Facebook BMC flash layout
PATCH v3 1/2 ARM: dts: Add Facebook BMC flash layout
This is the layout used by Facebook BMC systems. It describes the fixed flash layout of a 32MB mtd device.
Signed-off-by Tao Ren <[email protected]>
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Changes in v3:
- adding comments explaining why "data0" and "flash0" partitions are needed.
Changes in v2:
- adding facebook copyright.
.../boot/dts/facebook-bmc-flash-layout.dtsi | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 arch/arm/boot/dts/facebook-bmc-flash-layout.dtsi
arch/arm/boot/dts/facebook-bmc-flash-layout.dtsi new file +42 -0
@@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Copyright (c) 2018 Facebook Inc. + +partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + u-boot at 0 { + reg = <0x0 0x60000>; + label = "u-boot"; + }; + + u-boot-env at 60000 { + reg = <0x60000 0x20000>; + label = "env"; + }; + + fit at 80000 { + reg = <0x80000 0x1b80000>; + label = "fit"; + }; + + /* + * "data0" partition is used by several Facebook BMC platforms + * as persistent data store. + */ + data0 at 1c00000 { + reg = <0x1c00000 0x400000>; + 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 at 0 { + reg = <0x0 0x2000000>; + label = "flash0"; + }; +};
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2.17.1