[PATCH v2 1/6] ARM: dts: Add Facebook BMC 128MB flash layout
From: <hidden>
Date: 2021-08-05 22:28:37
Also in:
linux-arm-kernel, linux-aspeed, linux-devicetree, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Tao Ren <redacted> 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 <redacted> --- 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