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realtek: make DGS-1210 u-boot-env partition writeable

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We are close to provide enduser friendly OpenWrt images for DGS-1210
switches that do not need serial console. Nevertheless a small bit is
missing. We cannot switch back to the vendor partition or initiate a
download of a vendor firmware image. To issue this from inside OpenWrt
we need write access to U-Boot environment.

Case 1: Switch back to secondary (vendor) image
> fw_setenv bootcmd run addargs\; bootm 0xb4e80000
> fw_setenv image /dev/mtdblock7
> reboot

Case 2: Issue D-Link Network Assistant based download on next reboot.
This is a combination of some vendor specific protocol (DDP) and a
TFTP download afterwards.
> fw_setenv bootstop on
> reboot

Allow these commands by opening up u-boot-env for write access.
Tested on DGS-1210-20.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
This commit is contained in:
Markus Stockhausen 2022-07-08 17:27:22 +02:00 committed by Sander Vanheule
parent a8e1e30543
commit b2681e584c
1 changed files with 0 additions and 1 deletions
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1
target/linux/realtek/dts-5.10/rtl8382_d-link_dgs-1210.dtsi
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@ -55,7 +55,6 @@
partition@80000 {
label = "u-boot-env";
reg = <0x00080000 0x40000>;
read-only;
};
partition@c0000 {
label = "board-name";