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From:   Christian Hewitt <christianshewitt@gmail.com>
To:     Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Kevin Hilman <khilman@baylibre.com>,
        Neil Armstrong <narmstrong@baylibre.com>,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org
Cc:     Christian Hewitt <christianshewitt@gmail.com>,
        Furkan Kardame <furkan@fkardame.com>
Subject: [PATCH 1/3] arm64: dts: meson: add BL32 reserved-memory region to GT-King
Date:   Sat, 22 Jan 2022 07:32:19 +0000
Message-Id: <20220122073221.2398-2-christianshewitt@gmail.com>
In-Reply-To: <20220122073221.2398-1-christianshewitt@gmail.com>
References: <20220122073221.2398-1-christianshewitt@gmail.com>
Precedence: bulk

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 c5522ff9c729 ("arm64: dts: meson-g12b-gtking: add initial device-tree")
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
---
 arch/arm64/boot/dts/amlogic/meson-g12b-gtking.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-gtking.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-gtking.dts
index 5d96c1449050..58a300d6b545 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-gtking.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-gtking.dts
@@ -19,6 +19,14 @@
 		rtc1 = &vrtc;
 	};
 
+	reserved-memory {
+		/* 32 MiB reserved for ARM Trusted Firmware (BL32) */
+		secmon_reserved_bl32: secmon@5300000 {
+			reg = <0x0 0x05300000 0x0 0x2000000>;
+			no-map;
+		};
+	};
+
 	spdif_dit: audio-codec-1 {
 		#sound-dai-cells = <0>;
 		compatible = "linux,spdif-dit";
-- 
2.17.1