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charset="UTF-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PUZPR06MB5747.apcprd06.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ae026734-b2e3-45e9-8d23-08de9c3d8705 X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Apr 2026 04:55:20.4829 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: vkHSzxn1/wkhun14txq0q74/YD/9l7/8zqv3ukdqwUEJz2EiN2IzIUXDiLWPDjzgelQPO4V2LugcUZngML44tpePi+XazsrcgYa71v3bwMo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SEZPR06MB5880 X-Original-Sender: srinuvasan.a@siemens.com X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@siemens.com header.s=selector2 header.b=MCIoAB3K; arc=pass (i=1 spf=pass spfdomain=siemens.com dkim=pass dkdomain=siemens.com dmarc=pass fromdomain=siemens.com); spf=pass (google.com: domain of srinuvasan.a@siemens.com designates 2a01:111:f403:c405::5 as permitted sender) smtp.mailfrom=srinuvasan.a@siemens.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=siemens.com X-Original-From: "Arjunan, Srinu" Reply-To: "Arjunan, Srinu" Precedence: list Mailing-list: list isar-users@googlegroups.com; contact isar-users+owners@googlegroups.com List-ID: X-Spam-Checked-In-Group: isar-users@googlegroups.com X-Google-Group-Id: 914930254986 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-Spam-Status: No, score=-4.9 required=5.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,RCVD_IN_RP_CERTIFIED, RCVD_IN_RP_RNBL,RCVD_IN_RP_SAFE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on shymkent.ilbers.de X-TUID: wVhSiYw6fs59 > Err, where/how do you define "primary" and "secondary" EFI bootloaders? > Note that EBG is isar-cip-core, and there we definitely do not have such = a concept. Can you > elaborate what you want to achieve? In our downstream project, we use a combination of EBG and systemd-boot, al= ong with UKI (ukify) images. EBG acts as the primary bootloader to enable watchdog support during early = boot, while systemd-boot is used as a secondary bootloader to select the appropri= ate Btrfs snapshot along with its corresponding UKI image. If the system fails to be successfully =E2=80=9Cblessed=E2=80=9D (e.g., due= to issues detected during validation of a newly created Btrfs snapshot), we need a mechanism to fall back to a previously working snapshot and its = associated UKI image. This fallback selection is handled by systemd-boot. To support this flow, the WIC plugin expects /boot/EFI/Linux to contain the= unified kernel image required for the first boot. Therefore, we run kernel-install after update-initramfs to ensure that the = unified kernel image is properly=20 generated and placed in the expected location. Many thanks, Srinu -----Original Message----- From: Kiszka, Jan (FT RPD CED) =20 Sent: 15 April 2026 18:35 To: Arjunan, Srinu (FT FDS CES LX PBU 2) ; isar-u= sers@googlegroups.com Cc: K L, Shivaschandra (FT FDS CES LX PBU 1) Subject: Re: [PATCH] rootfs: run kernel-install after update-initramfs On 15.04.26 14:55, srinuvasan.a via isar-users wrote: > From: srinuvasan >=20 > When efibootguard is used as the primary bootloader and systemd-boot=20 > as secondary, the WIC plugin expects /boot/EFI/Linux to contain a=20 > unified kernel image for first boot. >=20 Err, where/how do you define "primary" and "secondary" EFI bootloaders? Note that EBG is isar-cip-core, and there we definitely do not have such a = concept. Can you elaborate what you want to achieve? > Run kernel-install after update-initramfs to ensure the unified kernel=20 > image is generated and placed correctly. >=20 > Invoke kernel-install for UKI generation only when: > - ukify binary is available > - /usr/lib/kernel/install.conf exists >=20 > Signed-off-by: Shivaschandra KL > Signed-off-by: srinuvasan > --- > meta/classes-recipe/rootfs.bbclass | 20 +++++++++++++++++--- > 1 file changed, 17 insertions(+), 3 deletions(-) >=20 > diff --git a/meta/classes-recipe/rootfs.bbclass=20 > b/meta/classes-recipe/rootfs.bbclass > index a9233111..9024f006 100644 > --- a/meta/classes-recipe/rootfs.bbclass > +++ b/meta/classes-recipe/rootfs.bbclass > @@ -14,10 +14,20 @@ ROOTFS_DISTRO ?=3D "${DISTRO}" > ROOTFS_USE_DRACUT ??=3D "" > =20 > def initramfs_generator_cmdline(d): > - rootfs_packages =3D d.getVar('ROOTFS_PACKAGES') or '' > + rootfs_packages =3D d.getVar('ROOTFS_PACKAGES') or '' > + > if 'dracut' in rootfs_packages or bb.utils.to_boolean(d.getVar('ROOT= FS_USE_DRACUT')): > - return "dracut --force --kver \"$kernel_version\"" > - return "update-initramfs -u -v -k \"$kernel_version\"" > + return 'dracut --force --kver "$kernel_version"' > + > + cmdline =3D 'update-initramfs -u -v -k "$kernel_version"' > + > + cmdline +=3D ( > + '; command -v ukify >/dev/null && [ -f /usr/lib/kernel/install.c= onf ] && ' Who is using ukify? No one in isar or isar-cip-core at least. Are you refer= ring to an out-of-tree wic plugin with these changes? In-tree (Isar), we still need to enable meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py to generate UKIs. B= ut that would be systemd-boot UKI-only, no EBG then. Jan > + 'kernel-install add "$kernel_version" "/boot/${kernel##*/}" ' > + '"/boot/initrd.img-$kernel_version" || :' > + ) > + > + return cmdline > =20 > ROOTFS_PACKAGES ?=3D "" > ROOTFS_VARDEPS ?=3D "" > @@ -627,6 +637,10 @@ python do_generate_initramfs_setscene () { } > =20 > rootfs_generate_initramfs[progress] =3D "custom:rootfs_progress.InitrdPr= ogressHandler" > +rootfs_generate_initramfs:prepend() { > + export kernel > +} > + > rootfs_generate_initramfs() { > if [ -n "$(sudo find '${ROOTFSDIR}/boot' -type f -name 'vmlinu[xz]*'= )" ]; then > for kernel in ${ROOTFSDIR}/boot/vmlinu[xz]-*; do -- Siemens AG, Foundational Technologies Linux Expert Center --=20 You received this message because you are subscribed to the Google Groups "= isar-users" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to isar-users+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/isar-users/= PUZPR06MB57475ADF58813411880F623488202%40PUZPR06MB5747.apcprd06.prod.outloo= k.com.