linux-kernel - [PATCH v3 4/5] arm64: dts: librem5: protect some partitions of the nor-flash

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Message-Id: <20210219100439.9428-5-martin.kepplinger@puri.sm>
Date:   Fri, 19 Feb 2021 11:04:38 +0100
From:   Martin Kepplinger <martin.kepplinger@...i.sm>
To:     robh@...nel.org, shawnguo@...nel.org, festevam@...il.com
Cc:     kernel@...gutronix.de, linux-imx@....com, krzk@...nel.org,
        kernel@...i.sm, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Angus Ainslie <angus@...ea.ca>,
        Martin Kepplinger <martin.kepplinger@...i.sm>
Subject: [PATCH v3 4/5] arm64: dts: librem5: protect some partitions of the nor-flash

From: Angus Ainslie <angus@...ea.ca>

These sections should be read only as they contain important data.

Signed-off-by: Angus Ainslie <angus@...ea.ca>
Signed-off-by: Martin Kepplinger <martin.kepplinger@...i.sm>
---
 .../boot/dts/freescale/imx8mq-librem5.dtsi      | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
index c2bbbdeb93e3..d39ae27c8e42 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -258,6 +258,23 @@
 		compatible = "jedec,spi-nor";
 		reg = <0>;
 		spi-max-frequency = <1000000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "protected0";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+		partition@...00 {
+			label = "protected1";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+		partition@...00 {
+			label = "rw";
+			reg = <0x40000 0x1C0000>;
+		};
 	};
 };
 
-- 
2.20.1