linux-kernel - [PATCH 3/3] arm64: dts: meson: add BL32 reserved-memory region to GS-King-X

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Message-Id: <20220122073221.2398-4-christianshewitt@gmail.com>
Date:   Sat, 22 Jan 2022 07:32:21 +0000
From:   Christian Hewitt <christianshewitt@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Christian Hewitt <christianshewitt@...il.com>,
        Furkan Kardame <furkan@...rdame.com>
Subject: [PATCH 3/3] arm64: dts: meson: add BL32 reserved-memory region to GS-King-X

Add an additional reserved memory region for the BL32 trusted firmware
shipping in Beelink g12b devices. This fixes a long running issue with
boxes booting from Vendor u-boot where the board wedges during boot or
soon after due to the (un)reserved region being overwritten.

Fixes commit 93db2ce05204 ("arm64: dts: meson: add initial Beelink GS-King-X device-tree")
Signed-off-by: Christian Hewitt <christianshewitt@...il.com>
Tested-by: Furkan Kardame <furkan@...rdame.com>
---
 arch/arm64/boot/dts/amlogic/meson-g12b-gsking-x.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-gsking-x.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-gsking-x.dts
index 6c7bfacbad78..c6178cbe3a9b 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-gsking-x.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-gsking-x.dts
@@ -20,6 +20,14 @@
 		rtc1 = &vrtc;
 	};
 
+	reserved-memory {
+		/* 32 MiB reserved for ARM Trusted Firmware (BL32) */
+		secmon_reserved_bl32: secmon@...0000 {
+			reg = <0x0 0x05300000 0x0 0x2000000>;
+			no-map;
+		};
+	};
+
 	gpio-keys-polled {
 		compatible = "gpio-keys-polled";
 		#address-cells = <1>;
-- 
2.17.1