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This is effectively a manual cherry-pick of commit:
37d3b1b316470fdcfebc59d5522bfbfefc025ff6
from the master branch with additional review and fixups.
The intent of these changes is to minimize the effort to backport
fixes from the master branch, which has been updated in preparation
for the switch to the next Yocto LTS release in early 2022.
Bug-AGL: SPEC-4144
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ic649d942ac043edc52976a3d4190590bb1c125e7
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The Jailhouse configuration files had to be modified to append the additional
memory regions present on the higher mem variants of the RPi4.
To avoid the use of mem= kernel parameter to fix the memory that can be used
by the root cell, a device tree overlay with reserved-memory nodes is used
instead.
To avoid conflict with the GPU memory, the memory region used for Jailhouse
and the non-root cells was moved from 0x30000000 to 0x20000000.
Bug-AGL: SPEC-3507
Signed-off-by: Jakub Luzny <jakub@luzny.cz>
Change-Id: Iabd67504c3df0349dd62e45f12d1019de14328f1
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Jailhouse is a partitioning hypervisor based on Linux. It is able to run
bare-metal applications or (adapted) operating systems besides Linux.
For this purpose, it configures CPU and device virtualization features
of the hardware platform in a way that none of these domains, called
"cells" here, can interfere with each other in an unacceptable way.
This layer adds the Jailhouse package into AGL and also appends the BSPs
to allow it to run. Currently, Raspberry Pi 4 and QEMU x86-64 targets
are supported.
To enable Jailhouse and include it in the image, the AGL feature
agl-jailhouse must be enabled.
Bug-AGL: SPEC-3507
Signed-off-by: Jakub Luzny <jakub@luzny.cz>
Change-Id: I0fbc0b5d931c85d6f22b0222da8c2b106c4115e1
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Scott Murray
Jakub Luzny