From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas.petazzoni@bootlin.com (Thomas Petazzoni) Date: Fri, 29 Jun 2018 13:44:07 +0200 Subject: [PATCH v2] arm64: dts: marvell: armada-37xx: reserve memory for ATF In-Reply-To: <20180626081701.27176-1-miquel.raynal@bootlin.com> References: <20180626081701.27176-1-miquel.raynal@bootlin.com> Message-ID: <20180629134407.112819d2@windsurf> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello, On Tue, 26 Jun 2018 10:17:01 +0200, Miquel Raynal wrote: > From: Victor Gu > > The PSCI area should be reserved in Linux for PSCI operations such as > suspend/resume. > > Reserve 2MiB of memory which matches the area used by ATF (BL1, BL2, > BL3x, see [1] in ATF source code). This covers all PSCI code and data > area and is 2MiB aligned, which is required by Linux for huge pages > handling. > > Please note that this is a default setup allowing to perform PSCI > operations with legacy bootloaders. Recent bootloaders should update the > region size/position accordingly. > > [1] plat/marvell/a3700/common/include/platform_def.h > > Signed-off-by: Victor Gu > [miquel.raynal at bootlin.com: reword of commit message, comment in the DTSI] > Signed-off-by: Miquel Raynal Acked-by: Thomas Petazzoni Best regards, Thomas -- Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com