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Joachim Wiberg
77a7915e1f
On single-core Cortex-A7, the YANG bootstrap and config loading is the dominant boot bottleneck. The current sequence spawns three serial phases (bootstrap, sysrepo-plugind, load), each performing independent sr_connect()/sr_disconnect() cycles, and every sysrepoctl/sysrepocfg invocation is a fork+exec that rebuilds SHM from scratch. Replace all three with a single confd binary that does one sr_connect() and performs all datastore operations in-process: - Wipe stale /dev/shm/sr_* for a clean slate - sr_install_factory_config() from the generated JSON - Smart migration: compare config version via libjansson, only fork+exec the migrate script when versions actually differ - Load startup-config (or test-config) via lyd_parse_data() + sr_replace_config(), mirroring what sysrepocfg -I does internally - On failure: revert to factory-default, load failure-config, set login banners (Fail Secure mode) - On first boot: copy factory-default to running, export to file - dlopen plugins and enter event loop The bootstrap shell script is split: config generation (gen-hostname, gen-interfaces, etc.) stays in the new gen-config script, while all sysrepo operations move into the C daemon. The finit boot sequence collapses from 5 stanzas to 2 (gen-config -> confd). Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Board Support
The board support for an architecture always starts with Qemu support,
this is what each linux_defconfig at the very least sets up. Then
each $BR2_ARCH has additional BSPs, e.g., Banana Pi BPI-R3.
The board/ directory is matched with the configs/*_defconfigs and
the only execption is board/common/, which holds all shared files for
Infix builds.
Each board/$BR2_ARCH/ can then have vendor/product sub-directories
for the BSPs which may contain "fixups" to the base kernel config and
any additional device tree files that should be included as well.
To rebuild a board-specific package, e.g. NanoPi R2S:
make friendlyarm-nanopi-r2s-rebuild all