hi3516cv6xx: convert to ultimate variant + wire opensdk source build

[widgetii]

Summary

Companion to OpenIPC/openhisilicon#202 (merged as b1c4dae5) which brought up the V5 (Hi3516CV610 / Hi3516CV608) kernel-module + sensor port.

• Renames hi3516cv6xx_lite_defconfig → hi3516cv6xx_ultimate_defconfig (git mv, history preserved). The previous 8 MB lite variant cannot fit majestic + vendor MPP libs + 42 V5 kernel modules; ultimate/16 MB is the established convention for full feature sets across the firmware tree (8 boards already use it).
• Wires hisilicon-opensdk to build cv6xx from source: 42 open_*.ko (replacing prebuilt vendor ot_*.ko) + 6 source-built sensor .so (gc4023, os04d10, sc4336p, sc431hai, sc450ai, sc500ai).
• Bumps HISILICON_OPENSDK_VERSION from 31a5e9f0 to b1c4dae5.
• Audits kernel-module / sensor / userspace lib install paths so there are no duplicates between vendor osdrv blobs and openhisilicon-supplied artifacts.
• Aligns load_hisilicon with the ev200 canonical pattern.
• Fixes a pre-existing Makefile repack-budget bug for the cv6xx firmware.bin path.

Resolves the boot regression introduced after PRs #2167 + #2170 where S70vendor → load_hisilicon hung at mmz_start: 0x42e00000 waiting on ot_base.ko (the vendor blob's init was built against a kernel config / vermagic that doesn't match openipc/linux 5.10.221).

Hardware validation (Hi3516CV610 demo board, sc4336p sensor)

load mmz ....OK!
load base.ko ....OK!     <-- the original boot-hang point — resolved
... 33 more "load X.ko ....OK!" lines ...
load sensor_i2c.ko ....OK!
load sensor_spi.ko ....OK!
ot_wtdg init ok.

# lsmod | wc -l                     → 43
# ls /proc/umap | wc -l              → 30
# ls /dev/i2c-* /dev/ot_*            → /dev/i2c-0..2 /dev/ot_proc /dev/ot_lsadc /dev/ot_mipi_rx

Build budget (FLASH_SIZE=16, repack ceiling 16384 KB)

Artifact	Size
fitImage (zImage + DTB)	2772 KB
rootfs.squashfs (xz)	7219 KB
firmware.bin.hi3516cv6xx	10048 KB
Budget margin	6336 KB / 39%

Detail per file

br-ext-chip-hisilicon/configs/hi3516cv6xx_ultimate_defconfig (renamed)

• VARIANT lite→ultimate, FLASH_SIZE 8→16
• OPENIPC_MAJESTIC left at default \"lite\" — only the lite-flavored cv6xx majestic binary has been published to OpenIPC S3 so far. Bump to \"ultimate\" in a follow-up once an ultimate-flavored cv6xx majestic binary is uploaded.
• Ultimate package set mirroring hi3516ev300_ultimate: AWS_WEBRTC, DIVINUS, EXFATPROGS+EXFAT_OPENIPC, IPTABLES, LAME_OPENIPC, LIBWEBSOCKETS_OPENIPC, MAJESTIC+MAJESTIC_FONTS+MAJESTIC_WEBUI, MOSQUITTO (no broker), MOTORS, PROTOBUF_C, QUIRC_OPENIPC, UACME_OPENIPC, VTUND_OPENIPC, ZEROTIER_ONE.
• Wireless stack intentionally omitted — openipc/linux hi3516cv6xx kernel has CONFIG_WIRELESS off, so cfg80211/mac80211-dependent USB WiFi drivers (mt7601u_openipc, rtl8188fu_openipc, linux_firmware_openipc) and wpa_supplicant/wireless-tools have nothing to bind to. Re-enable once the kernel config gains the wireless stack.
• UBI rootfs not enabled — cv6xx ships NOR flash.

general/package/hisilicon-opensdk/hisilicon-opensdk.mk

• HISILICON_OPENSDK_VERSION bumped 31a5e9f0 → b1c4dae5 (the merged cv6xx port commit).
• New hi3516cv6xx arm in the SoC dependency ladder, HISILICON_OPENSDK_SDK_CODE = 0x3516C610, DISABLE_VO=1 DISABLE_TDE=1 (V5 is encode-only).
• New HISILICON_OPENSDK_SENSORS_hi3516cv6xx listing the 6 source-built drivers.
• New cv6xx install block that ships .ko to /lib/modules/<kver>/hisilicon/ + sensor .so to /usr/lib/sensors/.
• cv6xx added to the FINALIZE_MODULES filter so the depmod hook runs and the extra/open_*.ko dedup wipe applies.

general/package/hisilicon-osdrv-hi3516cv6xx/hisilicon-osdrv-hi3516cv6xx.mk

• Dropped the 39 prebuilt INSTALL ... files/kmod/ot_*.ko lines — those modules are now built against the running openipc/linux tree by hisilicon-opensdk and ship under hisilicon/.
• Dropped the prebuilt files/sensor/*.so install — sensor drivers now built from vendor SDK source by hisilicon-opensdk.
• Added install for the 43-lib transitive NEEDED closure of the majestic binary against the vendor MPP lib set in files/lib/. libopus.so is explicitly excluded because BR2_PACKAGE_OPUS_OPENIPC builds a source equivalent. 14 unreferenced vendor libs are also omitted, saving ~660 KB:
  • excluded: libss_mpi_aibnr/bla/cipher/devstat/km/otp/smartae/syskol/uvc, libss_bcd, libmbedtls_harden_adapt, libsvp_aicpu, libvqe_common, libopus.

general/package/hisilicon-osdrv-hi3516cv6xx/files/script/load_hisilicon

Aligned with the hi3516ev200 canonical pattern (was vendor-flavored modprobe ot_* previously):

Before	After
modprobe ot_*	modprobe open_* (openhisilicon PREFIX is open_)
set_allocator(){} empty stub	fw_setenv mmz_allocator
check_allocator defined but never called	called from insert_osal
insert_security_subsys hard-fail on missing open_cipher/open_km	best-effort 2>/dev/null; V5 ships cipher/km as closed-source full .ko, the rest of the MPP pipeline survives their absence
Sensor probe used full insert_ko (~15 s, fails on missing cipher/km)	minimal insert_detect()/remove_detect() (osal+mmz+sys_config+base+isp+sensor_i2c+sensor_spi, ~3 s)
-sensor0/-sensor set only SNS_TYPE0 (auto-detect probe still fired)	also exports SENSOR=\$arg, skips the probe gate when user specifies explicitly
modprobe sys_config (vendor name, no prefix)	modprobe open_sys_config
# modprobe extdrv/ot_sensor_spi stale vendor-SDK reference	dropped
open_wdt / open_pwm / open_piris / open_sensor_spi commented out	uncommented (they build clean now)

general/package/all-patches/wireguard-tools/0001-netlink-fallback-define-NLM_F_DUMP_INTR.patch

The cv6xx musl toolchain shipped under openipc/firmware releases is built against a pre-3.16 kernel UAPI snapshot, so wireguard-tools 1.0.20210914 fails to compile with NLM_F_DUMP_INTR undeclared. Patch adds a fallback #define NLM_F_DUMP_INTR 0x10 in src/netlink.h (the value is stable since the flag was added in upstream commit 1d4c8c29c7df in 2014). Same patch applies safely to all other targets.

Makefile

repack target's firmware.bin branch hard-coded an 8192 KB budget regardless of BR2_OPENIPC_FLASH_SIZE. Added a cv6xx-aware path that uses FLASH_SIZE * 1024 so cv6xx_ultimate (FLASH_SIZE=16) is checked against 16384 KB instead of 8192 KB. Other SoCs unchanged.

.github/workflows/build.yml + toolchain.yml

CI matrix entry hi3516cv6xx_lite → hi3516cv6xx_ultimate to match the renamed defconfig.

Dedup audit

• Kernel modules — clean. Only open_*.ko in /lib/modules/<kver>/hisilicon/. extra/ is wiped by the FINALIZE_MODULES hook. 191 unique .ko paths, 0 collisions.
• Sensors — clean. 6 source-built libsns_*.so in /usr/lib/sensors/. Vendor prebuilt install stripped from osdrv .mk.
• MPP libs — clean. libopus.so excluded from osdrv install (BR2_PACKAGE_OPUS_OPENIPC wins).
• majestic NEEDED — all resolved (43 vendor libs + libprotobuf-c.so.1 via BR2_PACKAGE_PROTOBUF_C=y).

Deferred follow-ups (not blocking)

• open_cipher / open_km / open_otp / open_hardware_cryptodev — vendor ships only as full closed .ko; blob extraction TBD.
• WiFi stack — enable CONFIG_WIRELESS family in the cv6xx kernel config + restore the WiFi-USB driver packages.
• Ultimate-flavored cv6xx majestic binary — publish to OpenIPC S3, then bump OPENIPC_MAJESTIC=\"ultimate\" in the defconfig.

Test plan

• Build clean (make BOARD=hi3516cv6xx_ultimate all)
• firmware.bin ≤ 16384 KB
• 42 open_*.ko install to /lib/modules/5.10.221/hisilicon/
• 6 sensor .so install to /usr/lib/sensors/
• majestic NEEDED libs all resolve at install
• Kernel module load chain validated on real CV610 hardware (modprobe-driven, 43 modules loaded clean)
• No duplicate kmods/sensors/MPP libs between osdrv and opensdk installs
• Cold-boot + sysupgrade test once the PR builds and the sysupgrade bundle is published
• Majestic RTSP smoke test after sysupgrade

closes #180 on the openhisilicon side; resolves the post-#2167/#2170 boot regression on the firmware side.