From: Tao Ren <rentao.bupt@xxxxxxxxx>
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@xxxxxxxxx>
---
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
