linux-yocto kernel adds openssl-native dependency by default even
when module signing is still optional. kmod should enable
openssl support too. This helps see details of signed kernel
modules and debug issues with module signing. For small systems
this can still be disabled.
modinfo output shows bad signing info when kernel signing is enabled
but openssl support is missing from kmod:
root@qemux86-64:~# dmesg|grep 509
[ 0.750905] ACPI: PCI: Interrupt link LNKG configured for IRQ 11
[ 0.950039] Asymmetric key parser 'x509' registered
[ 1.241727] Loading compiled-in X.509 certificates
[ 1.267863] Loaded X.509 cert 'Build time autogenerated kernel key: 48bcd79439f61aaf8fc19ec0882439d64db73820'
root@qemux86-64:~# lsmod
Module Size Used by
sch_fq_codel 20480 1
root@qemux86-64:~# modinfo sch_fq_codel
filename: /lib/modules/5.19.9-yocto-standard/kernel/net/sched/sch_fq_codel.ko
description: Fair Queue CoDel discipline
license: GPL
author: Eric Dumazet
depends:
retpoline: Y
intree: Y
name: sch_fq_codel
vermagic: 5.19.9-yocto-standard SMP preempt mod_unload
sig_id: PKCS#7
signer:
sig_key:
sig_hashalgo: unknown
signature:
modinfo with openssl enabled in kmod:
root@qemux86-64:~# modinfo sch_fq_codel
filename: /lib/modules/5.19.9-yocto-standard/kernel/net/sched/sch_fq_codel.ko
description: Fair Queue CoDel discipline
license: GPL
author: Eric Dumazet
depends:
retpoline: Y
intree: Y
name: sch_fq_codel
vermagic: 5.19.9-yocto-standard SMP preempt mod_unload
sig_id: PKCS#7
signer: Build time autogenerated kernel key
sig_key: 07:9A:C4:36:96:98:6E:5B:73:CF:C8:40:A6:57:D9:03:5E:27:8D:25
sig_hashalgo: sha512
signature: 21:4D:F0:E2:E0:7C:8E:31:A0:96:12:68:06:0D:FA:0D:E2:17:45:64:
51:94:7E:B0:97:DD:EB:59:89:CA:1A:C3:10:E7:7C:4D:5D:F0:5D:B6:
2A:61:D3:BF:89:7A:0D:CD:A2:39:57:1B:C6:B5:7D:C1:DB:6F:D9:36:
29:7A:07:18:F5:22:9F:9A:33:4D:38:BC:79:C8:51:8B:82:0F:B4:09:
08:37:52:11:98:50:7E:19:28:0F:13:2E:03:A5:E8:F8:D9:E7:DF:61:
18:AC:22:FE:96:BD:D0:55:96:9E:C9:1C:15:C9:0B:9A:5A:FD:D0:C0:
8F:41:12:5B:EA:4B:E5:5D:4D:EA:D5:2E:E5:80:D4:51:CC:63:97:F3:
4B:39:CC:B6:A1:83:F5:EF:2F:A1:22:CD:CA:BC:DB:82:C0:E4:AB:13:
5D:C5:F3:BC:B7:3E:B4:16:BF:87:1D:AC:69:43:1F:78:2A:5F:E2:63:
52:A2:DA:FC:F9:C0:BA:D8:1A:FE:58:4E:6A:D8:DE:BE:F8:F6:C2:59:
CE:F5:0A:A0:15:A3:01:BC:B6:70:36:4E:5F:D6:9B:B0:DE:93:15:3E:
35:37:38:D9:01:2B:72:2F:D3:74:A4:AD:F4:5F:52:74:44:E1:C9:D3:
A9:87:BC:93:58:8A:82:DB:14:6F:E0:4D:AF:8E:B5:3D:92:20:8B:4A:
04:54:6C:21:F1:76:DF:08:A9:0A:A5:D5:D0:17:CA:98:B5:F4:9F:F6:
9C:8F:DA:09:C2:37:FB:36:23:D1:25:27:4C:DB:9B:43:19:EB:55:1C:
DA:32:04:A5:B1:97:F7:A3:3B:82:55:FD:BD:6D:90:BB:61:E6:D3:93:
42:CB:FD:4A:1B:3E:03:43:7D:E3:85:32:91:45:C9:B4:CD:DC:B7:07:
37:58:8A:4A:49:5F:F7:26:41:E1:BB:A1:64:B5:86:00:17:9D:D7:81:
31:BA:DC:BF:04:CC:11:55:B1:C6:24:83:43:33:34:2D:BF:00:74:26:
6A:EC:56:90:C7:1B:C2:78:5C:7F:25:2D:78:BD:C5:D9:7D:69:6A:32:
5D:EF:48:6C:21:64:47:2A:FE:34:3C:58:8D:9E:D7:42:76:BE:89:84:
8D:62:9D:62:DE:7C:88:C4:5F:AA:13:20:6B:90:53:16:4E:06:EE:8A:
DE:F7:EA:F8:92:03:7D:84:B7:0C:9F:A0:52:B7:5E:21:BF:37:6A:C9:
34:6D:69:1E:4A:CC:48:F2:0A:6C:B8:AD:83:C0:8F:76:CC:43:0E:29:
17:A9:22:F3:0B:59:A9:87:24:AD:84:CD:EE:E2:C3:93:F7:A8:11:ED:
9A:CC:DA:7F:9D:73:06:5C:A7:1A:6A:54
(From OE-Core rev: d6a62eb68641239985a1f8cf9cf4528a07fd0b99)
Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Poky
Poky is an integration of various components to form a pre-packaged build system and development environment which is used as a development and validation tool by the Yocto Project. It features support for building customised embedded style device images and custom containers. There are reference demo images ranging from X11/GTK+ to Weston, commandline and more. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK suitable for IDE integration.
Additional information on the specifics of hardware that Poky supports is available in README.hardware. Further hardware support can easily be added in the form of BSP layers which extend the systems capabilities in a modular way. Many layers are available and can be found through the layer index.
As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation, the 'meta-yocto' layer which has configuration and hardware support components. These components are all part of the Yocto Project and OpenEmbedded ecosystems.
The Yocto Project has extensive documentation about the system including a reference manual which can be found at https://docs.yoctoproject.org/
OpenEmbedded is the build architecture used by Poky and the Yocto project. For information about OpenEmbedded, see the OpenEmbedded website.
Contribution Guidelines
The project works using a mailing list patch submission process. Patches should be sent to the mailing list for the repository the components originate from (see below). Throughout the Yocto Project, the README files in the component in question should detail where to send patches, who the maintainers are and where bugs should be reported.
A guide to submitting patches to OpenEmbedded is available at:
https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded
There is good documentation on how to write/format patches at:
https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines
Where to Send Patches
As Poky is an integration repository (built using a tool called combo-layer), patches against the various components should be sent to their respective upstreams:
OpenEmbedded-Core (files in meta/, meta-selftest/, meta-skeleton/, scripts/):
- Git repository: https://git.openembedded.org/openembedded-core/
- Mailing list: openembedded-core@lists.openembedded.org
BitBake (files in bitbake/):
- Git repository: https://git.openembedded.org/bitbake/
- Mailing list: bitbake-devel@lists.openembedded.org
Documentation (files in documentation/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/yocto-docs/
- Mailing list: docs@lists.yoctoproject.org
meta-yocto (files in meta-poky/, meta-yocto-bsp/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto
- Mailing list: poky@lists.yoctoproject.org
If in doubt, check the openembedded-core git repository for the content you intend to modify as most files are from there unless clearly one of the above categories. Before sending, be sure the patches apply cleanly to the current git repository branch in question.