linux-hardening - [PATCH 2/2] arm64: dts: qcom: msm8992-libra: Fix the memory map

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Date:   Mon, 19 Dec 2022 14:19:18 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     marijn.suijten@...ainline.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Eugene Lepshy <fekz115@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jeremy McNicoll <jmcnicol@...hat.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kees Cook <keescook@...omium.org>,
        Tony Luck <tony.luck@...el.com>,
        "Guilherme G. Piccoli" <gpiccoli@...lia.com>,
        linux-hardening@...r.kernel.org
Subject: [PATCH 2/2] arm64: dts: qcom: msm8992-libra: Fix the memory map

The memory map was wrong. Fix it to prevent the device from randomly
rebooting.

Fixes: 0f5cdb31e850 ("arm64: dts: qcom: Add Xiaomi Libra (Mi 4C) device tree")
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 .../boot/dts/qcom/msm8992-xiaomi-libra.dts    | 77 +++++++++++++++----
 1 file changed, 60 insertions(+), 17 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/msm8992-xiaomi-libra.dts b/arch/arm64/boot/dts/qcom/msm8992-xiaomi-libra.dts
index b242c272d2af..fcca1ba94da6 100644
--- a/arch/arm64/boot/dts/qcom/msm8992-xiaomi-libra.dts
+++ b/arch/arm64/boot/dts/qcom/msm8992-xiaomi-libra.dts
@@ -11,6 +11,12 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/gpio-keys.h>
 
+/delete-node/ &adsp_mem;
+/delete-node/ &audio_mem;
+/delete-node/ &mpss_mem;
+/delete-node/ &peripheral_region;
+/delete-node/ &rmtfs_mem;
+
 / {
 	model = "Xiaomi Mi 4C";
 	compatible = "xiaomi,libra", "qcom,msm8992";
@@ -70,25 +76,67 @@ reserved-memory {
 		#size-cells = <2>;
 		ranges;
 
-		/* This is for getting crash logs using Android downstream kernels */
-		ramoops@...00000 {
-			compatible = "ramoops";
-			reg = <0x0 0xdfc00000 0x0 0x40000>;
-			console-size = <0x10000>;
-			record-size = <0x10000>;
-			ftrace-size = <0x10000>;
-			pmsg-size = <0x20000>;
+		memory_hole: hole@...0000 {
+			reg = <0 0x06400000 0 0x600000>;
+			no-map;
+		};
+
+		memory_hole2: hole2@...0000 {
+			reg = <0 0x06c00000 0 0x2400000>;
+			no-map;
+		};
+
+		mpss_mem: mpss@...0000 {
+			reg = <0 0x09000000 0 0x5a00000>;
+			no-map;
+		};
+
+		tzapp: tzapp@...0000 {
+			reg = <0 0x0ea00000 0 0x1900000>;
+			no-map;
+		};
+
+		mdm_rfsa_mem: mdm-rfsa@...b0000 {
+			reg = <0 0xca0b0000 0 0x10000>;
+			no-map;
+		};
+
+		rmtfs_mem: rmtfs@...00000 {
+			compatible = "qcom,rmtfs-mem";
+			reg = <0 0xca100000 0 0x180000>;
+			no-map;
+
+			qcom,client-id = <1>;
 		};
 
-		modem_region: modem_region@...0000 {
-			reg = <0x0 0x9000000 0x0 0x5a00000>;
+		audio_mem: audio@...00000 {
+			reg = <0 0xcb000000 0 0x400000>;
+			no-mem;
+		};
+
+		qseecom_mem: qseecom@...00000 {
+			reg = <0 0xcb400000 0 0x1c00000>;
+			no-mem;
+		};
+
+		adsp_rfsa_mem: adsp-rfsa@...00000 {
+			reg = <0 0xcd000000 0 0x10000>;
 			no-map;
 		};
 
-		tzapp: modem_region@...0000 {
-			reg = <0x0 0xea00000 0x0 0x1900000>;
+		sensor_rfsa_mem: sensor-rfsa@...10000 {
+			reg = <0 0xcd010000 0 0x10000>;
 			no-map;
 		};
+
+		ramoops@...00000 {
+			compatible = "ramoops";
+			reg = <0 0xdfc00000 0 0x40000>;
+			console-size = <0x10000>;
+			record-size = <0x10000>;
+			ftrace-size = <0x10000>;
+			pmsg-size = <0x20000>;
+		};
 	};
 };
 
@@ -130,11 +178,6 @@ &blsp2_uart2 {
 	status = "okay";
 };
 
-&peripheral_region {
-	reg = <0x0 0x7400000 0x0 0x1c00000>;
-	no-map;
-};
-
 &pm8994_spmi_regulators {
 	VDD_APC0: s8 {
 		regulator-min-microvolt = <680000>;
-- 
2.39.0