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arm-autonomy/wic: Deploy Xen related artefacts in the wic boot partition

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This patch brings the following changes:
* Documentation about how to customize the wic image for N1SDP
* Introduce a custom wks and grub.cfg file for N1SP when building with
  `DISTRO_FEATURES += "arm-autonomy-host"` to include Xen artefacts and boot
  option.
* Introduce a mechanism to include extra global settings for machines defined
  in meta-arm-bsp when building with `DISTRO_FEATURES += "arm-autonomy-host"`.

Change-Id: Ic9f36bae3bf04df1ee6a6c543e812f27c5c537a0
Issue-Id: SCM-1065
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Diego Sueiro
2020-10-01 17:07:38 +01:00
committed by Jon Mason
parent fa846e808c
commit 1b2500bfb0
8 changed files with 129 additions and 3 deletions
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meta-arm-autonomy/documentation/n1sdp-image-customization.md
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Customizing Arm Autonomy Host image layout for N1SDP
====================================================
When buiding with `DISTRO_FEATURES += "arm-autonomy-host"` the user can
perform a couple of customizations in the generated wic image:
1. Set the guest partition size (default: 4iG) via `GUEST_PART_SIZE` and
`GUEST_PART_SIZE_UNIT` (M or G) variables to be set in any conf file. The
value of these variables should be aligned with the sum of all
XENGUEST_IMAGE_DISK_SIZE set for the guests. By default, LVM2 metadata is
1 MiB per physical volume, hence it needs to be taken into account when
setting GUEST_PART_SIZE.
2. The wic image partition layout and contents with a custom wks file via
`ARM_AUTONOMY_WKS_FILE` variable (default:
arm-autonomy-n1sdp-efidisk.wks.in which is affected by GUEST_PART_SIZE,
GUEST_PART_SIZE_UNIT and GRUB_CFG_FILE variables).
3. Custom grub.cfg file via `GRUB_CFG_FILE` (default:
arm-autonomy-n1sdp-grub.cfg) variable to be set in any conf file. The full
path or relative to `ARM_AUTONOMY_WKS_FILE` should be set.
The `arm-autonomy-n1sdp-efidisk.wks.in` and `arm-autonomy-n1sdp-grub.cfg` files
are located at `meta-arm-autonomy/dynamic-layers/meta-arm-bsp/wic`.
Other variables can also be custmized to set what files need to be included
in the wic image boot partition. Please refer to
`meta-arm-autonomy/dynamic-layers/meta-arm-bsp/conf/machine/n1sdp-extra-settings.inc`
for more details.