tree 4a44b81da0666bd30d877604a767f186bb9592bb
parent ed0fb571fc149de85f2b99ddf73bb1ca5cc38cb7
author Brad Bishop <bradleyb@fuzziesquirrel.com> 1564077836 -0400
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1565911638 -0400

aspeed: provide suitable kernel build defaults

oe-core has these defaults:
 KERNEL_IMAGETYPE: "zimage"
 KERNEL_CLASSES: "kernel-uimage"
 INITRAMFS_IMAGE: ""
 INITRAMFS_FSTYPES: "cpio.gz"

Override those defaults with Aspeed specific defaults that are more
appropriate to the current state of typical usage (FIT) of Aspeed chips:

 KERNEL_IMAGETYPE: "fitImage"
 KERNEL_CLASSES: "kernel-fitimage"
 INITRAMFS_IMAGE: "aspeed-image-initramfs"
 INITRAMFS_FSTYPES: "cpio.xz"

By default use aspeed-image-initramfs in the FIT image.
aspeed-image-initramfs is just an alias to core-image-minimal.  The
alias is required because vanilla core-image-minimal is not an initramfs
image recipe...in oe, in general, the usage of the image recipe
(initramfs or not) is baked into the recipe itself with a line like:

IMAGE_FSTYPES = "${INITRAMFS_FSTYPES}"

The same behavior *could* be obtained with a bbappend but that then
prevents users from using the original image recipe as a real root
filesystem image in their setups.

Perhaps at a later time a replacement image with an Aspeed hardware
evaluation kit theme would be a more suitable default.

(From meta-aspeed rev: 7639df3650f6d91c9b533e0287142fdcfbc0b2ea)

Change-Id: I51def69bcfd786f4c8aad2ae68376da335aad039
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>