ramips: mt7621 novel art_block partition
pepe2k at gmail.com
Mon Jul 27 03:53:22 EDT 2020
On 27.07.2020 03:30, Heppler, J. Scott wrote:
> I came onto a Trendnet TEW-827DRU Version 2 that is MT7621an with
> MT7615E x 2 wifi chips. I was able to get UART output and stock has
> these partitions:
> [ 2.512000] 0x000000000000-0x000001000000 : "ALL"
> [ 2.520000] 0x000000000000-0x000000030000 : "Bootloader"
> [ 2.532000] 0x000000030000-0x000000040000 : "Config"
> [ 2.544000] 0x000000040000-0x000000050000 : "Factory"
> [ 2.552000] 0x000000050000-0x000000ef0000 : "firmware"
> [ 2.564000] 0x000000050000-0x000000380000 : "kernel"
> [ 2.576000] 0x000000380000-0x000000ef0000 : "rootfs"
> [ 2.584000] 0x000000ef0000-0x000000ff0000 : "rootfs_data"
> [ 2.596000] 0x000000ff0000-0x000001000000 : "art_block"
> I reviewed all the mt7621 *dts files and none have an art_block.
grep -rn "art_block" target/linux/ramips/dts/
target/linux/ramips/dts/mt7621_elecom_wrc-1900gst.dts:31: label =
target/linux/ramips/dts/mt7621_elecom_wrc-2533gst.dts:30: label =
target/linux/ramips/dts/mt7621_elecom_wrc-1750gs.dts:31: label =
> My understanding is that for Qualcomm, the art* partition contains
> Atheros calibration data. I'm lost as to what and art_block is on a
> mediatek device. Trendnet can be lazy with partition naming - the
> TEW-810 has a partion referred to a D-Link.
Does this partition contain any data or is empty? I suppose you can just
ignore it (keep it as read-only), it looks like copy&paste mistake made
by original board manufacturer.
> I did find a "firmware2" partition -
> mt7621_asus_rt-acx5p.dtsi, a "second_config" - mt7621_mtc_wr1201.dts
> that are about the same size and position.
> Are there any Mediatek experts that can enlighten me and point me in the
> right direction?
> Thanks in advance
More information about the openwrt-devel