Switch the OSPv2 (mxl25641-hdk-6) and Freedom (wnc-freedom) eMMC flash
flow to the FEAT-29 U-Boot update script, replacing the legacy OSPv2
update_fullimage path and the Freedom untar/flash sysupgrade path. This
exercises the image/update tooling introduced in prplos!1964.
The flow tftpboots the per-board update_script.itb, sources it and runs
update_prpl against the FEAT-29 OS artifacts:
- OSPv2: PRPL_OSP_v2-wgrtd159be_b_wav700-ext4.img (4G variant)
- Freedom: prpl_freedom-kernel.itb + prpl_freedom-rootfs.itb
update_rescue_bank is set to yes so both OS banks carry the same image
and a bank failover cannot boot a stale rootfs. U-Boot/RBE/XBL/SMD are
left unset: those are one-time migration inputs and must not be
reflashed on every refresh. Boards are expected to already be on the
prpl flash layout. Hand-off to Linux uses run bootcmd (bootprpl/bootipq)
instead of reset, which avoids a power cycle and the labgrid autoboot
re-interrupt hazard.
init_command_timeout bounds the whole init_commands sequence and is set
deliberately tight, per board, so a network/perf regression (e.g. image
TFTP throughput roughly halving) trips the timeout instead of silently
passing, while still absorbing TFTP first-packet jitter. Validated runs
executed the init_commands in:
- OSPv2: ~30s (update_script TFTP ~10s + update_prpl ~18s) -> 60s
- Freedom: ~37s (sleep 5 + update_script TFTP ~3.5s + update_prpl ~24s,
two images to both banks) -> 75s
The rootfs_data overlay is erased before update_prpl so every refresh
boots from a clean overlay; update_prpl itself leaves rootfs_data
untouched. The block offsets are hardcoded from each board's GPT because
the target U-Boot has no part command to derive them:
- OSPv2: mmc erase 0x86c00 0x10000 (32 MiB, UPDK 9.2.0)
- Freedom: mmc erase 0x534022 0x40000 (128 MiB)
Because update_prpl needs both the update script and the OS image over
TFTP, generalise the testbed/cdrouter firmware copy to a list via the
new TFTP_IMAGE_FILENAMES variable (falling back to TFTP_IMAGE_FILENAME),
rather than overloading TFTP_IMAGE_UNPACK_COMMAND. The Freedom testbed
job now drives the wnc-freedom-emmc target instead of initramfs, so the
now-unused wnc-freedom-initramfs labgrid target is dropped.
Flip the wnc-freedom and mxl25641-hdk-6 testbed runner tags to the -sfl
variant (dut-wnc-freedom-sfl, dut-mxl25641-hdk-6-b-sfl), to make it
clear, that those devices are converted to the prpl Standard Flash
Layout.
References: FEAT-29
Closes: PCF-2644, PCF-2645
Assisted-by: claude:opus-4-8:1m-context
Signed-off-by: Petr Štetiar <petr.stetiar@prplfoundation.org>
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