From: Gregory CLEMENT <gregory.clement@bootlin.com>
To: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Jason Cooper <jason@lakedaemon.net>, Andrew Lunn <andrew@lunn.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/1] arm64: dts: marvell: armada-ap806: reserve PSCI area
Date: Thu, 10 Jan 2019 12:04:46 +0100 [thread overview]
Message-ID: <874lagpycx.fsf@FE-laptop> (raw)
In-Reply-To: <20181221164503.5128-1-xypron.glpk@gmx.de> (Heinrich Schuchardt's message of "Fri, 21 Dec 2018 17:45:03 +0100")
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
next prev parent reply other threads:[~2019-01-10 11:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-21 16:45 [PATCH v2 1/1] arm64: dts: marvell: armada-ap806: reserve PSCI area Heinrich Schuchardt
2018-12-26 16:16 ` Gregory CLEMENT
2018-12-26 17:09 ` Heinrich Schuchardt
2019-01-10 6:34 ` Emmanuel Vadot
2019-01-10 11:01 ` Gregory CLEMENT
2019-01-10 11:04 ` Gregory CLEMENT [this message]
2019-01-20 14:14 ` Heinrich Schuchardt
2019-01-21 10:41 ` Greg Kroah-Hartman
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