| Message ID | 20250409134615.240037-1-mikko.rapeli@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v4] systemd: use serial-getty-generator on genericarm64 | expand |
diff --git a/meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend b/meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend new file mode 100644 index 0000000000..f23852a351 --- /dev/null +++ b/meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend @@ -0,0 +1,3 @@ +# auto detection instead of build time configured via SERIAL_CONSOLES +# to support multiple devices +PACKAGECONFIG:append:genericarm64 = " serial-getty-generator"
systemd-serialgetty recipe sets serial consoles based on SERIAL_CONSOLES build time variable. These fail to be detected on multiple devices including qemu and the resulting failures delay boot to systemd "running" state by one minute on an example aarch64 build machine and qemu. Serial console login works with both since udev will trigger agetty on correct devices. Using systemd side serial-getty-generator disables systemd-serialgetty. qemu-system-aarch64 core-image-base boot time with systemd-serialgetty before this patch: $ systemd-analyze Startup finished in 8.314s (firmware) + 9.805s (loader) + 14.338s (kernel) + 1min 34.392s (userspace) = 2min 6.851s multi-user.target reached after 1min 34.387s in userspace. with this patch: Startup finished in 8.312s (firmware) + 9.804s (loader) + 14.295s (kernel) + 29.808s (userspace) = 1min 2.220s multi-user.target reached after 29.802s in userspace. After recent changes to serial-getty-generator, systemd init and "poky-altcfg" builds for genericarm64 machine now don't start agetty to serial consoles which are not defined in SERIAL_CONSOLES at build time. This includes AMD KV260 where boot succeeds with long delay and without agetty serial login: [ TIME ] Timed out waiting for device /dev/hvc0. [5:185mDEPEND] Dependency failed for Serial Getty on hvc0. [ TIME ] Timed out waiting for device /dev/ttyAMA0. [5:185mDEPEND] Dependency failed for Serial Getty on ttyAMA0. [ TIME ] Timed out waiting for device /dev/ttyS2. [5:185mDEPEND] Dependency failed for Serial Getty on ttyS2. [ TIME ] Timed out waiting for device /dev/ttyS1. [5:185mDEPEND] Dependency failed for Serial Getty on ttyS1. [ TIME ] Timed out waiting for device /dev/ttyS0. [5:185mDEPEND] Dependency failed for Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. Fix is to either add all supported devices to SERIAL_CONSOLES which has been rejected https://lists.yoctoproject.org/g/poky/topic/109273447#msg13461 or using systemd to start agetty on all detected serial console devices, this patch. Without this patch AMD KV260 serial console login is broken on "poky" and "poky-altcfg" distro genericarm64 builds from poky, all images. With this patch "poky-altcfg" images have working serial console login. This change is also needed in walnascar branch. Cc: Ross Burton <ross.burton@arm.com> Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org> --- meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend | 3 +++ 1 file changed, 3 insertions(+) create mode 100644 meta-yocto-bsp/recipes-core/systemd/systemd_%.bbappend v4: improved commit message, no changes to v1 v3: https://lists.yoctoproject.org/g/poky/message/13575 no changes to v1 v2: https://lists.yoctoproject.org/g/poky/message/13566 no changes to v1 v1: https://lists.yoctoproject.org/g/poky/message/13522