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images: add core-image-initramfs-boot

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Add a minimal initramfs image recipe that just contains enough initramfs
to find the real root filesystem and pivot to it.

BSPs can use MACHINE_EXTRA_RRECOMMENDS to pull in any kernel module
packages that are required to bring up the hardware so that the rootfs
can be found.

(From OE-Core rev: 3e862cddf28e58957b7c6d9c983fdb40eb5442fb)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Ross Burton
2023-12-13 18:22:37 +00:00
committed by Richard Purdie
parent 56a22eb31c
commit 26560efaea
2 changed files with 23 additions and 0 deletions
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1
meta/conf/distro/include/maintainers.inc
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@@ -101,6 +101,7 @@ RECIPE_MAINTAINER:pn-connman-conf = "Ross Burton <ross.burton@arm.com>"
RECIPE_MAINTAINER:pn-connman-gnome = "Ross Burton <ross.burton@arm.com>"
RECIPE_MAINTAINER:pn-consolekit = "Chen Qi <Qi.Chen@windriver.com>"
RECIPE_MAINTAINER:pn-core-image-base = "Richard Purdie <richard.purdie@linuxfoundation.org>"
RECIPE_MAINTAINER:pn-core-image-initramfs-boot = "Ross Burton <ross.burton@arm.com>"
RECIPE_MAINTAINER:pn-core-image-minimal = "Richard Purdie <richard.purdie@linuxfoundation.org>"
RECIPE_MAINTAINER:pn-core-image-minimal-dev = "Richard Purdie <richard.purdie@linuxfoundation.org>"
RECIPE_MAINTAINER:pn-core-image-minimal-initramfs = "Richard Purdie <richard.purdie@linuxfoundation.org>"

22
meta/recipes-core/images/core-image-initramfs-boot.bb Normal file
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@@ -0,0 +1,22 @@
SUMMARY = "Basic initramfs to boot a fully-featured rootfs"
DESCRIPTION = "Small initramfs that contains just udev and init, to find the real rootfs."
LICENSE = "MIT"
INITRAMFS_SCRIPTS ?= "initramfs-framework-base initramfs-module-udev"
PACKAGE_INSTALL = "${INITRAMFS_SCRIPTS} ${VIRTUAL-RUNTIME_base-utils} base-passwd"
# Ensure the initramfs only contains the bare minimum
IMAGE_FEATURES = ""
IMAGE_LINGUAS = ""
# Don't allow the initramfs to contain a kernel, as kernel modules will depend
# on the kernel image.
PACKAGE_EXCLUDE = "kernel-image-*"
IMAGE_FSTYPES = "${INITRAMFS_FSTYPES}"
IMAGE_NAME_SUFFIX ?= ""
IMAGE_ROOTFS_SIZE = "8192"
IMAGE_ROOTFS_EXTRA_SPACE = "0"
inherit image