topic [jailhouse] boot from linux sd card, root cell from mmc in i.MX Processors

[jailhouse] boot from linux sd card, root cell from mmc

Ahelion — Fri, 22 Dec 2023 08:37:01 GMT

Hello all,

is it possible to boot the root cell linux from mmc and run the inmae from sdcard? Using jailhouse?

if yes, what are the steps needed?

imx8mp processor.

br, Mircea

Re: [jailhouse] boot from linux sd card, root cell from mmc

Peng_Fan — Thu, 28 Dec 2023 08:01:07 GMT

You need modify imx8mp-evk-root.dts to disable SD and enable eMMC. Then the root cell should be able to use eMMC when you booting from eMMC.

Then you need update jailhouse cell configs/arm64/imx8mp-inmate-linux.c to assign emmc sdhc controller to it, not sd sdhc controller to it, the memory map and irq map.

Then you need modify imx8mp-evk-inmate.dts to add sd sdhc in it. since there is no gpio, no regulator as of now, you need force it non-removable and configure regulator ready in root cell, but I guess should not impact.

Needs some jailhouse knowledge to make it work, hope this hepls

Re: [jailhouse] boot from linux sd card, root cell from mmc

Ahelion — Mon, 08 Jan 2024 06:39:19 GMT

Is there any imx8* that has some form of android+linux thing in jailhouse? so that I can use as reference? I realy do not know how to do the steps you said above, I am a Noob at jailhouse.