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MLK-20542 ARM64: dts: imx8qm: domu: reserve 4KB at RAM start address 

Reserve 4KB memory at the GUEST_RAM0_BASE, this area will be used
as a magic number area, U-Boot will write this area and XEN will
check this area during U-Boot/Linux reseting/rebooting.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Flynn xu <flynn.xu@nxp.com>
(cherry picked from commit ed0659fb66dfb5b9fad51e9d920d5fb0a8a93f41)
pull/10/head
Peng Fan 2018-12-12 14:38:06 +08:00
parent 87902e44ca
commit 707a616023
1 changed files with 10 additions and 0 deletions
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10
arch/arm64/boot/dts/freescale/fsl-imx8qm-mek-domu.dts
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@ -13,6 +13,16 @@
*/
/dts-v1/;
/*
* At current stage, M41 is not ready to communicate with XEN, so we
* we need a way to tell XEN uboot is running or linux is running.
* XEN will check the contents of this area.
* So reserve a page at the beginning of GUEST_RAM0_BASE to avoid Linux
* touch this area.
*/
/memreserve/ 0x80000000 0x1000;
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/imx8qm-clock.h>
#include <dt-bindings/input/input.h>