This file was forked from the generic (non verity) version in
meta-yocto, but it would seem that due to limited use, an update
in the parent never made it here, even after two years:
[commit 0c679ac53b52e631a7c961872ce58f5cf74b8629 in meta-yocto]
From: Kevin Hao <kexin.hao@windriver.com>
Date: Tue, 23 Mar 2021 17:35:29 +0800
Subject: [PATCH] meta-yocto-bsp: beaglebone: Set a fixed size for boot
partition in WIC image
After the dosfstools has been updated to v4.2 by commit b522f24723e1
("dosfstools: update 4.1 -> 4.2"), the commit b29eb5be67e9 ("mkfs.fat:
Align total number of sectors to be multiple of sectors per track") in
v4.2 has caused a regression in beagebone black board. The reason is
that the real total sectors of the fat filesystem created by the mkdosfs
may not be the same size as what we requested due to align with the
sectors per track, this change seem no side effect to linux kernel,
but it breaks the beaglebone black boot ROM and make it can't load the
MLO. In order to fix this issue, we choose to set a fixed size for the
boot partition to make sure that the total sectors always are aligned
with the sectors per track.
[Yocto #14306]
Bring the same change across, so dm-verity doesn't face the same
frustrating silent boot failure with zero console output.
With this change in place, and allowing for read-only rootfs, we see:
device-mapper: verity: sha256 using implementation "sha256-generic"
EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
INIT: version 3.01 booting
Note that the above is from booting on real hardware on Kirkstone.
Cc: Kevin Hao <kexin.hao@windriver.com>
Cc: Niko Mauno <niko.mauno@vaisala.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Based on systemd-bootdisk-microcode.wks.in, this adds
the dm-verity image similar to the beaglebone wks
already in meta-security.
Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Since dm-verity-image.bbclass effectively injects
<DM_VERITY_IMAGE>:do_image_<DM_VERITY_IMAGE_TYPE>
dependency for do_image_wic task, we can change verity rootfs artifact
reference here from DEPLOY_DIR_IMAGE to IMGDEPLOYDIR in order to
mitigate following breakage which was observed when bitbaking
<DM_VERITY_IMAGE> target from scratch (using sstate-cache provided
artifacts):
| wic.filemap.Error: cannot open image file '.../build/tmp/deploy/images/beaglebone-yocto/core-image-minimal-beaglebone-yocto.ext4.verity': [Errno 2] No such file or directory: '.../build/tmp/deploy/images/beaglebone-yocto/core-image-minimal-beaglebone-yocto.ext4.verity'
| WARNING: exit code 1 from a shell command.
|
ERROR: Task (.../meta/recipes-core/images/core-image-minimal.bb:do_image_wic) failed with exit code '1'
Signed-off-by: Niko Mauno <niko.mauno@vaisala.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
This adds various bits and pieces to enable generating a working example
of a full chain of trust up to dm-verity-protected rootfs level on Beagle
Bone Black.
The new initramfs is quite generic and should work for other SoCs as well
when using fitImage.
The following config can be used with current master poky,
meta-openembedded & meta-security to generate a BBB image using verified
boot and dm-verity.
UBOOT_SIGN_KEYDIR = "/tmp/test-keys/"
UBOOT_SIGN_KEYNAME = "dev"
UBOOT_SIGN_ENABLE = "1"
UBOOT_MKIMAGE_DTCOPTS = "-I dts -O dtb -p 2000"
UBOOT_MACHINE_beaglebone-yocto = "am335x_boneblack_vboot_config"
IMAGE_CLASSES += "dm-verity-img"
IMAGE_FSTYPES += "wic.xz ext4"
DM_VERITY_IMAGE = "core-image-full-cmdline"
DM_VERITY_IMAGE_TYPE = "ext4"
KERNEL_CLASSES += "kernel-fitimage"
KERNEL_IMAGETYPE_beaglebone-yocto = "fitImage"
IMAGE_INSTALL_remove = " kernel-image-zimage"
IMAGE_BOOT_FILES_remove = " zImage"
IMAGE_BOOT_FILES_append = " fitImage-${INITRAMFS_IMAGE}-${MACHINE}-${MACHINE};fitImage"
# Using systemd is not strictly needed but deals nicely with read-only
# filesystem by default.
DISTRO_FEATURES_append = " systemd"
DISTRO_FEATURES_BACKFILL_CONSIDERED += "sysvinit"
VIRTUAL-RUNTIME_init_manager = "systemd"
VIRTUAL-RUNTIME_initscripts = "systemd-compat-units"
INITRAMFS_IMAGE = "dm-verity-image-initramfs"
INITRAMFS_FSTYPES = "cpio.gz"
INITRAMFS_IMAGE_BUNDLE = "1"
WKS_FILE = "beaglebone-yocto-verity.wks.in"
KERNEL_FEATURES_append = " features/device-mapper/dm-verity.scc"
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
