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- From 0f6c4817471faf572b5273cdf90160790b0c3b29 Mon Sep 17 00:00:00 2001
- From: Linus Walleij <[email protected]>
- Date: Thu, 17 May 2018 17:00:10 +0200
- Subject: [PATCH 07/18] ARM: dts: Fix up the D-Link DIR-685 MTD partition info
- The vendor firmware was analyzed to get the right idea about
- this flash layout. /proc/mtd contains:
- dev: size erasesize name
- mtd0: 01e7ff40 00020000 "rootfs"
- mtd1: 01f40000 00020000 "upgrade"
- mtd2: 00040000 00020000 "rgdb"
- mtd3: 00020000 00020000 "nvram"
- mtd4: 00040000 00020000 "RedBoot"
- mtd5: 00020000 00020000 "LangPack"
- mtd6: 02000000 00020000 "flash"
- Here "flash" is obviously the whole device and we know "rootfs"
- is a bogus hack to point to a squashfs rootfs inside of the main
- "upgrade partition". We know "RedBoot" is the first 0x40000 of
- the flash and the "upgrade" partition follows from 0x40000 to
- 0x1f8000. So we have mtd0, 1, 4 and 6 covered.
- Remains:
- mtd2: 00040000 00020000 "rgdb"
- mtd3: 00020000 00020000 "nvram"
- mtd5: 00020000 00020000 "LangPack"
- Inspecting the flash at 0x1f8000 and 0x1fa000 reveals each of
- these starting with "RGCFG1" so we assume 0x1f8000-1fbfff is
- "rgdb" of 0x40000.
- Signed-off-by: Linus Walleij <[email protected]>
- ---
- arch/arm/boot/dts/gemini-dlink-dir-685.dts | 16 ++++++----------
- 1 file changed, 6 insertions(+), 10 deletions(-)
- diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
- index 6f258b50eb44..502a361d1fe9 100644
- --- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
- +++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
- @@ -274,20 +274,16 @@
- read-only;
- };
- /*
- - * Between the boot loader and the rootfs is the kernel
- - * in a custom Storlink format flashed from the boot
- - * menu. The rootfs is in squashfs format.
- + * This firmware image contains the kernel catenated
- + * with the squashfs root filesystem. For some reason
- + * this is called "upgrade" on the vendor system.
- */
- - partition@1800c0 {
- - label = "rootfs";
- - reg = <0x001800c0 0x01dbff40>;
- - read-only;
- - };
- - partition@1f40000 {
- + partition@40000 {
- label = "upgrade";
- - reg = <0x01f40000 0x00040000>;
- + reg = <0x00040000 0x01f40000>;
- read-only;
- };
- + /* RGDB, Residental Gateway Database? */
- partition@1f80000 {
- label = "rgdb";
- reg = <0x01f80000 0x00040000>;
- --
- 2.19.2
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