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The gk7205v500 lite rootfs is 5044K of its 5120K slot. The split layout lets kernel and rootfs share one budget.

• gk7205v500_lite and _ultimate use general/scripts/post-image-split.sh with BR2_OPENIPC_NOR_FIXED_PACKAGE=y: the fixed-slot package as before, plus -split.
• gk7205v500.generic.config turns on MTD_SPLIT_FIRMWARE (named "firmware"), MTD_SPLIT_UIMAGE_FW, MTD_SPLIT_SQUASHFS_ROOT and MTD_ROOTFS_ROOT_DEV (gk7205v500 family: the split NOR layout, from the device tree linux#137). Its U-Boot has the split mode since nor: split layout on the gk7205v500 family u-boot#52.
• Only these two defconfigs use this kernel config, and both ship -split, so no fixed-only build gets a split-capable kernel. gk7201v200 has its own config and is unchanged.

Built locally:

• gk7205v500_lite: uImage 1935K of 1983K, squashfs 5044K of 5120K, firmware.bin 7040K of 7616K; -lite.tgz and -lite-split.tgz.
• gk7205v500_ultimate: uImage 1935K, squashfs 6528K, firmware.bin 8512K of 15808K; nor-ultimate, nor-ultimate-split and nand-ultimate (the same six files as on latest).

Tested in qemu-hisilicon (gk7205v500 machine), with lite and ultimate rebuilt on the merged kernel (OpenIPC/linux#137) and U-Boot rebuilt from the merged OpenIPC/u-boot#52 tree:

Run	Flash	U-Boot	Result
lite split	8 MB	new	scan finds uImage at 0x50000, squashfs at 0x240000; sfc: split NOR layout, device tree partitions; firmware/kernel/rootfs/rootfs_data (0x730000); root on 31:4; login prompt
lite split, power-cycled	8 MB	new	second boot logs Seeding 2048 bits and crediting (the seed the first boot saved in the overlay); jffs2 overlay read from the host keeps .openipc-overlay, etc/fw_env.config, crond.reboot
lite split	8 MB	published u-boot-gk7205v500-nor.bin	root=/dev/mtdblock3 ignored, the flash names its own root; root on 31:4; login
ultimate split	16 MB	new	rootfs_data at 0x8a0000; root on 31:4; login; overlay kept across a power cycle (seed credited, same files)
ultimate split	16 MB	published	root= ignored; root on 31:4; login
lite fixed-slot → recovery	8 MB	new	fixed slots boot (cmdlinepart, root 31:3); run fwupd over TFTP fetches firmware.bin.gk7205v500 (7208960 bytes), erases 0x50000 to the end of the chip, writes it (byte-identical on flash); reboots split, root 31:4
ultimate fixed-slot → recovery	16 MB	new	same: 8716288 bytes, 16449536 bytes erased from 0x50000; reboots split, root 31:4, login

Not tested: sysupgrade inside Linux, because the console login stops at the Majestic EULA, and automation does not accept it. Not run on hardware. The kernel has 48K of headroom against the 1983K a fixed-slot package beside a split one may use; past that, gk7205v500 would go split-only like hi3516ev300.

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PR Summary by Qodo

Add split NOR images for gk7205v500 lite and ultimate

✨ Enhancement ⚙️ Configuration changes 🕐 10-20 Minutes

AI Description

• Enable kernel detection of split firmware and automatic SquashFS root selection.
• Ship split NOR images alongside fixed-slot packages to preserve upgrade compatibility.
• Validate both layouts in QEMU; hardware testing remains outstanding.

Diagram

graph TD
  Configs["Lite and ultimate"] --> Script["Post-image script"] --> Image["Split firmware"] --> Splitter["Kernel MTD split"] --> Root["SquashFS root"]
  Configs --> Repack["NOR repack"] --> Fixed["Fixed package"]
  Image --> Repack

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High-Level Assessment

Reuse the established split-image script and retain fixed-slot packages. A split-only release would lose compatibility with older upgrade flows, while remaining fixed-only would leave the lite rootfs close to its slot limit. The main remaining validation is on hardware.

Files changed (3) +9 / -0

Enhancement (3) +9 / -0

gk7205v500.generic.configEnable kernel partition discovery for split NOR firmware +5/-0

Enable kernel partition discovery for split NOR firmware

• Enables MTD splitting of the named firmware partition at its uImage and SquashFS boundaries. Also enables automatic selection of the discovered root filesystem as the root device.

br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config

gk7205v500_lite_defconfigProduce split and fixed-slot lite NOR packages +2/-0

Produce split and fixed-slot lite NOR packages

• Selects the shared split-image post-processing script and retains the fixed-slot package alongside the new split package for the 8 MB lite build.

br-ext-chip-goke/configs/gk7205v500_lite_defconfig

gk7205v500_ultimate_defconfigProduce split and fixed-slot ultimate NOR packages +2/-0

Produce split and fixed-slot ultimate NOR packages

• Selects the same split-image script and preserves fixed-slot NOR packaging for the 16 MB ultimate build. Its existing NAND packaging remains available.

br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig

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Code Review by Qodo

🐞 Bugs (0) 📘 Rule violations (1) 📎 Requirement gaps (0) 🎨 UX issues (0) 🔗 Cross-repo conflicts (0) 📜 Skill insights (0)

1. Split firmware has no hardware proof 📘 Rule violation ☼ Reliability

Description

The gk7205v500 split configuration changes the kernel partitioning and post-image layout for both
shipped variants without real-camera verification. The PR description reports only QEMU testing and
explicitly says it was not run on hardware, so boot and upgrade behaviour on affected cameras
remains unverified.

Code

br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config[R2873-2877]

+CONFIG_MTD_ROOTFS_ROOT_DEV=y
+CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_FIRMWARE_NAME="firmware"
+CONFIG_MTD_SPLIT_SQUASHFS_ROOT=y
+CONFIG_MTD_SPLIT_UIMAGE_FW=y

Evidence

The checklist requires real-camera evidence for any change that can alter firmware behaviour. These
changes enable split MTD partition handling in the kernel and select the split post-image script for
both shipped gk7205v500 variants, while the PR description states that testing was not run on
hardware.

Rule 3: Hardware evidence is present and honest
br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config[2873-2877]
br-ext-chip-goke/configs/gk7205v500_lite_defconfig[75-76]
br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig[84-85]

Agent prompt

The issue below was found during a code review. Follow the provided context and guidance below and implement a solution

## Issue description
The new split firmware layout changes kernel and rootfs partition behaviour for gk7205v500 images, but the PR provides only QEMU results and states that hardware testing was not performed.
## Fix Focus Areas
- br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config[2873-2877]
- br-ext-chip-goke/configs/gk7205v500_lite_defconfig[75-76]
- br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig[84-85]
## Recommended Fix
Test both lite and ultimate split images on the affected gk7205v500 hardware, recording boot, root filesystem selection, login, overlay persistence across reset, and upgrade or recovery behaviour. Add the affected board names and before/after observations to the PR description; if hardware is unavailable, do not claim hardware verification and provide the strongest applicable self-test evidence instead.

ⓘ Copy this prompt and use it to remediate the issue with your preferred AI generation tools

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