Messages in this thread | | | From | Gregory CLEMENT <> | Subject | Re: [PATCH v2 1/1] arm64: dts: marvell: armada-ap806: reserve PSCI area | Date | Thu, 10 Jan 2019 12:04:46 +0100 |
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Hi Heinrich,
On ven., déc. 21 2018, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
> 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>
Applied on mvebu/fixes
I added a comment about the use with a mainline /U-Boot
Thanks,
Gregory
> --- > 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 >
-- Gregory Clement, Bootlin Embedded Linux and Kernel engineering http://bootlin.com
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