Trusted Firmware allocates a chunk of memory for a lossy compressor
which makes the memory unavailable to Linux and any attempts to read/write
from Linux result in memory corruption or a crash. Fix this by reserving
the section of memory marked as unavailable by TF-A.
Fixes: a1d8a344f1ca ("arm64: dts: renesas: Introduce r8a774a1-beacon-rzg2m-kit")
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
diff --git a/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi b/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi
index 090dc9c4f57b..e01cb30e03e8 100644
--- a/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/beacon-renesom-som.dtsi
@@ -13,6 +13,17 @@ memory@48000000 {
reg = <0x0 0x48000000 0x0 0x78000000>;
};
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ lossy_decompress: lossy-decompress@54000000 {
+ reg = <0 0x54000000 0 0x03000000>; /* Reserved by TF-A */
+ no-map;
+ };
+ };
+
osc_32k: osc_32k {
compatible = "fixed-clock";
#clock-cells = <0>;
--
2.25.1
