Re: [PATCH] ath79/zyxel_nbg6716: resize kernel partition to 6MiB and reenable again

[Hauke Mehrtens]

On 5/22/21 5:00 PM, André Valentin wrote:

The bootloader happily accepts this.
But devices need a fresh reinstall because of resulting ubi partition
changes. Therefore a  sysupgrade will brick your device.

Please install a fresh factory image via bootloader.
Alternatively, you can flash sysupgrade-6M-Kernel.bin with
  zcat sysupgrade-6M-Kernel.bin | mtd -r -e /dev/mtd 3 write - /dev/mtd3

This may thow an error, because it is a 256M image. There are
devices out there with this flash size.

Notice that you will always loose configuration.

Signed-off-by: André Valentin <avalen...@marcant.net>
---
  .../linux/ath79/dts/qca9558_zyxel_nbg6716.dts |  4 ++--
  target/linux/ath79/image/nand.mk              | 24 +++++++++++++------
  2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/target/linux/ath79/dts/qca9558_zyxel_nbg6716.dts 
b/target/linux/ath79/dts/qca9558_zyxel_nbg6716.dts
index 9aee8c362c..411b086188 100644
--- a/target/linux/ath79/dts/qca9558_zyxel_nbg6716.dts
+++ b/target/linux/ath79/dts/qca9558_zyxel_nbg6716.dts
@@ -147,12 +147,12 @@

                        label = "kernel";
-                       reg = <0x500000 0x400000>;
+                       reg = <0x500000 0x600000>;
                };

                        label = "ubi";
-                       reg = <0x900000 0x7700000>;
+                       reg = <0xb00000 0x7500000>;
                };
        };
  };
diff --git a/target/linux/ath79/image/nand.mk b/target/linux/ath79/image/nand.mk
index caaa01c92d..37a5713ff1 100644
--- a/target/linux/ath79/image/nand.mk
+++ b/target/linux/ath79/image/nand.mk
@@ -236,6 +236,15 @@ TARGET_DEVICES += netgear_wndr4500-v3

    SOC := qca9558
+  DEVICE_COMPAT_VERSION := 2.0
+  DEVICE_COMPAT_MESSAGE := Kernel partition has been resized to 6M. \
+       A sysupgrade will brick your device. \
+       Please install a fresh factory image via bootloader. \
+       Alternatively, you can flash sysupgrade-6M-Kernel.bin with \

partition@500000 { partition@900000 { define Device/zyxel_nbg6716 + zcat sysupgrade-6M-Kernel.bin | mtd -r -e /dev/mtd3 write - /dev/mtd3

.\

+       This may thow an error, because it is a 256M image. There are \
+       devices out there with this flash size. \
+       Notice that you will always loose configuration.
    DEVICE_VENDOR := ZyXEL
    DEVICE_MODEL := NBG6716
    DEVICE_PACKAGES := kmod-usb2 kmod-usb-ledtrig-usbport kmod-ath10k-ct \
@@ -243,19 +252,20 @@ define Device/zyxel_nbg6716
    RAS_BOARD := NBG6716
    RAS_ROOTFS_SIZE := 29696k
    RAS_VERSION := "OpenWrt Linux-$(LINUX_VERSION)"
-  KERNEL_SIZE := 4096k
+  KERNEL_SIZE := 6144k
    BLOCKSIZE := 128k
    PAGESIZE := 2048
    KERNEL := kernel-bin | append-dtb | uImage none | zyxel-buildkerneljffs | \
-       check-size 4096k

This check was triggered by the build bots.


Hauke

I am not sure, but I think this also adds the rootfs to the kernel image and then it gets too big.

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