[Bug 196778] TPLINK WR1043-ND v1 hardware, updates to run with system on external USB disk

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196778

            Bug ID: 196778
           Summary: TPLINK WR1043-ND v1 hardware, updates to run with
                    system on external USB disk
           Product: Base System
           Version: 10.1-STABLE
          Hardware: mips
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: wojtek at puchar.net

few updates to this great works.

to run FULL FreeBSD with only kernel in builtin flash things below are useful:

0) add options NBUF=100 or so to kernel config, default buffer allocation
scheme are excessive.

1) changes to hints for geom_map:

hint.map.0.at="flash/spi0"
hint.map.0.start=0x00000000
hint.map.0.end=0x000020000
hint.map.0.name="uboot"
hint.map.0.readonly=1

hint.map.1.at="flash/spi0"
hint.map.1.start=0x00020000
hint.map.1.end=0x0007F0000
hint.map.1.name="kernel"
hint.map.1.readonly=0

hint.map.2.at="flash/spi0"
hint.map.2.start=0x007f0000
hint.map.2.end=0x00800000
hint.map.2.name="art"
hint.map.2.readonly=1

now kernel can be loaded and updated to flash from within system, while
overwriting uboot and radio calibration data is forbidden.

2) simple script to convert kernel to uboot image without any rootfs (based on
Adrian Chadd toolset for building images for many routers):


#!/bin/sh
strip -o /tmp/kernel /boot/kernel/kernel
gzip /tmp/kernel
echo -n ' ' >/tmp/rootfs
mktplinkfw -B TL-WR1043NDv1 -L 0x80050000 -E 0x80050100 -R 0x007EFFFF \
-k /tmp/kernel.gz -N FreeBSD -V FreeBSD-10 -r /tmp/rootfs -o /tmp/kernel.flash
rm /tmp/rootfs /tmp/kernel.gz
echo /tmp/kernel.flash now is ready to be written to /dev/map/kernel

this script can be used both from inside router or when crossbuilding kernel.

3) to write it to flash first time to router use information as on Adrian Chadd
webpages.

to update kernel  from within TPLINK do

dd if=/tmp/kernel.flash of=/dev/map/kernel bs=64k

and reboot

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