From 3014c694da6c83bba883200ae65b0350a37d7976 Mon Sep 17 00:00:00 2001 From: Felix Baumann Date: Mon, 26 Dec 2022 21:40:43 +0100 Subject: [PATCH] ramips: add support for read/write uboot env to Asus RX-AX53U Add support for read/writing uboot env by renaming the second partition to its stock label "nvram" and remove the deemed unnecessary "read-only". Split the first partition "u-boot" in two, in order to allow `fw_setenv` safe write-access to the uboot environment variables. This implements hauke's request from [1]. Based on the patch provided by Shiji Yang. [1] https://github.com/openwrt/openwrt/pull/10400#discussion_r945153224 Co-Authored-By: Shiji Yang Signed-off-by: Felix Baumann [ improve commit title and description, fix some whitespace problem ] Signed-off-by: Christian Marangi (cherry picked from commit 3f1e9f6f3b14385cab7ca6d1dcc2a4b658475bc3) --- target/linux/ramips/dts/mt7621_asus_rt-ax53u.dts | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/target/linux/ramips/dts/mt7621_asus_rt-ax53u.dts b/target/linux/ramips/dts/mt7621_asus_rt-ax53u.dts index 2df8b749df..aabd90ce64 100644 --- a/target/linux/ramips/dts/mt7621_asus_rt-ax53u.dts +++ b/target/linux/ramips/dts/mt7621_asus_rt-ax53u.dts @@ -60,12 +60,21 @@ partition@0 { label = "u-boot"; - reg = <0x0 0xe0000>; + reg = <0x0 0x80000>; read-only; }; - partition@e0000 { + /* + * u-boot gets split here while keeping u-boot read-only, + * which allows safe usage of fw_setenv + */ + partition@80000 { label = "u-boot-env"; + reg = <0x80000 0x60000>; + }; + + partition@e0000 { + label = "nvram"; reg = <0xe0000 0x100000>; read-only; }; -- 2.30.2