From 835bb2433592f75d94b853d46fe2e5ab1dd87d6e Mon Sep 17 00:00:00 2001
From: Dmitry Ilyin <6576495+widgetii@users.noreply.github.com>
Date: Thu, 22 Oct 2026 13:59:04 +0300
Subject: [PATCH] gk7205v500: the split NOR image, as on the gk7205v200 family

The gk7205v500 lite rootfs is 5044K of its 5120K slot. 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 (OpenIPC/linux#137); its U-Boot has the
split mode since OpenIPC/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 with the kernel branch:
- 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 8 and 16 MB, gk7205v510/v530
16 MB): the split firmware.bin under the new U-Boot and under the
published u-boot-gk7205v500-nor.bin ("root=/dev/mtdblock3 ignored"),
root on 31:4, login, the overlay kept across a reset; the fixed-slot
package under both: root on 31:3. Not run on hardware.
---
 br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config | 5 +++++
 br-ext-chip-goke/configs/gk7205v500_lite_defconfig          | 2 ++
 br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig      | 2 ++
 3 files changed, 9 insertions(+)

diff --git a/br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config b/br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config
index 1d0a09a5c..7236e2612 100644
--- a/br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config
+++ b/br-ext-chip-goke/board/gk7205v500/gk7205v500.generic.config
@@ -2870,3 +2870,8 @@ CONFIG_CMA_SIZE_SEL_MBYTES=y
 CONFIG_CMA_ALIGNMENT=8
 CONFIG_CMA_MEM_SHARED=y
 # CONFIG_CMA_ADVANCE_SHARE is not set
+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
diff --git a/br-ext-chip-goke/configs/gk7205v500_lite_defconfig b/br-ext-chip-goke/configs/gk7205v500_lite_defconfig
index 111d7ce68..06fe33968 100644
--- a/br-ext-chip-goke/configs/gk7205v500_lite_defconfig
+++ b/br-ext-chip-goke/configs/gk7205v500_lite_defconfig
@@ -72,3 +72,5 @@ BR2_PACKAGE_OPUS_OPENIPC=y
 BR2_PACKAGE_OPUS_OPENIPC_FIXED_POINT=y
 BR2_PACKAGE_VTUND_OPENIPC=y
 BR2_PACKAGE_YAML_CLI=y
+BR2_ROOTFS_POST_IMAGE_SCRIPT="$(BR2_EXTERNAL_GENERAL_PATH)/scripts/post-image-split.sh"
+BR2_OPENIPC_NOR_FIXED_PACKAGE=y
diff --git a/br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig b/br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig
index 4faed7d47..1322a6f17 100644
--- a/br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig
+++ b/br-ext-chip-goke/configs/gk7205v500_ultimate_defconfig
@@ -81,3 +81,5 @@ BR2_PACKAGE_UACME_OPENIPC=y
 BR2_PACKAGE_VTUND_OPENIPC=y
 BR2_PACKAGE_YAML_CLI=y
 BR2_PACKAGE_ZEROTIER_ONE=y
+BR2_ROOTFS_POST_IMAGE_SCRIPT="$(BR2_EXTERNAL_GENERAL_PATH)/scripts/post-image-split.sh"
+BR2_OPENIPC_NOR_FIXED_PACKAGE=y