Messages in this thread Patch in this message | | | From | Heinrich Schuchardt <> | Subject | [PATCH v2 1/1] arm64: dts: marvell: armada-ap806: reserve PSCI area | Date | Fri, 21 Dec 2018 17:45:03 +0100 |
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The memory area [0x4000000-0x4200000[ is occupied by the PSCI firmware. Any attempt to access it from Linux leads to an immediate crash.
So let's make the same memory reservation as the vendor kernel.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> --- v2 Move the change from armada-8040-mcbin.dts to armada-ap806.dtsi. I only have a MACCHIATObin for testing but https://github.com/MarvellEmbeddedProcessors/linux-marvell has the reservation in that file. --- arch/arm64/boot/dts/marvell/armada-ap806.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi index 7d94c1fa592a..f8dafef83db0 100644 --- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi +++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi @@ -28,6 +28,17 @@ method = "smc"; }; + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + psci-area@4000000 { + reg = <0x0 0x4000000 0x0 0x200000>; + no-map; + }; + }; + ap806 { #address-cells = <2>; #size-cells = <2>; -- 2.19.2
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