NEC Aterm WR8750N is a 2.4/5 GHz band 11n (Wi-Fi 4) router, based on
AR9344.
Specification:
- SoC : Atheros AR9344
- RAM : DDR2 128 MiB (2x Hynix H5PS5162GFR-S6C)
- Flash : SPI-NOR 8 MiB (Macronix MX25L6406EMI-12G)
- WLAN : 2.4/5 GHz 2T2R
- 2.4 GHz : Atheros AR9344 (SoC)
- 5 GHz : Atheros AR9382
- Ethernet : 5x 10/100/1000 Mbps
- switch : Atheros AR8327
- LEDs/Keys (GPIO): 10x/4x
- note : all LEDs are controlled by ath9k chip (AR9382)
- UART : through-hole on PCB
- assignment : 3.3V, GND, NC, TX, RX from tri-angle marking
- settings : 9600n8
- USB : 1x USB 2.0 Type-A
- hub (internal): NEC uPD720114
- Power : 12 VDC, 1.5 A (Max. 16 W)
- Stock OS : NetBSD based
Flash instruction using initramfs-factory.bin image (StockFW WebUI):
1. Boot WR8750N with router mode normally
2. Access to the WebUI ("http://aterm.me/" or "http://192.168.0.1/") on
the device and open firmware update page ("ファームウェア更新")
3. Select the OpenWrt initramfs-factory.bin image and click update
("更新") button
4. After updating, the device will be rebooted and booted with OpenWrt
initramfs image
5. On the initramfs image, upload (or download) uboot.bin and
sysupgrade.bin image to the device
6. Replace the bootloader with a uboot.bin image
mtd write <uboot.bin image> bootloader
7. Perform sysupgrade with a sysupgrade.bin image
sysupgrade <sysupgrade image>
8. Wait ~120 seconds to complete flashing
Flash instruction using initramfs-factory.bin image (bootloader CLI):
1. Connect and open serial console
2. Power on WR8750N and interrupt bootloader by ESC key
3. Login to the bootloader CLI with a password "chiron"
4. Start TFTP server by "tftpd" command
5. Upload initramfs-factory.bin via tftp from your computer
example (Windows): tftp -i 192.168.0.1 PUT initramfs-factory.bin
6. Boot initramfs image by "boot" command
7. On the initramfs image, back up the stock bootloader and firmware if
needed
8. Upload (or download) uboot.bin and sysupgrade.bin image to the device
9. Replace the bootloader with a uboot.bin image
10. Perform sysupgrade with a sysupgrade.bin image
11. Wait ~120 seconds to complete flashing
Notes:
- All LEDs are connected to the GPIO controller on the ath9k chip
(AR9382) and controlled by it. Those LEDs are probed after probing of
ath9k chip, so they cannot be handled as status LEDs of OpenWrt while
booting.
- A reset pin of the internal USB hub is connected to the GPIO
controller of the ath9k chip, like LEDs above. That hub will be
detected after probing of the ath9k chip.
- The stock bootloader requires an unknown filesystem on firmware area
in the flash. Booting of OpenWrt from that filesystem cannot be
handled, so the bootloader needs to be replaced to mainline U-Boot
before OpenWrt installation.
MAC Addresses:
LAN : 1C:B1:7F:xx:xx:00 (config, 0x6 (hex))
WAN : 1C:B1:7F:xx:xx:01 (config, 0xc (hex))
2.4 GHz: 1C:B1:7F:xx:xx:02 (config, 0x0 (hex) / art, 0x1002 (hex))
5 GHz : 1C:B1:7F:xx:xx:03 (config, 0x12 (hex) / art, 0x5002 (hex))
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/15432
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Some vendors of Senao boards have a similar flash layout
situation that causes the need to split the firmware partition
and use the lzma-loader, but do not store
checksums of the partitions or otherwise
do not even have a uboot environment partition.
This adds simple shell logic to skip that part.
Also, simplify some lines and variable usage.
Signed-off-by: Michael Pratt <mcpratt@pm.me>
Use a similar upgrade method for sysupgrade.bin, like factory.bin,
for Senao boards with the tar.gz OEM upgrade platform,
and 'failsafe' image which is loaded on checksum failure.
This is inspired by the OEM upgrade script /etc/fwupgrade.sh
and the existing platforms for dual-boot Senao boards.
Previously, if the real kernel was damaged or missing
the only way to recover was with UART serial console,
because the OKLI lzma-loader is programmed to halt.
uboot did not detect cases where kernel or rootfs is damaged
and boots OKLI instead of the failsafe image,
because the checksums stored in uboot environment
did not include the real kernel and rootfs space.
Now, the stored checksums include the space for both
the lzma-loader, kernel, and rootfs.
Therefore, these boards are now practically unbrickable.
Also, the factory.bin and sysupgrade.bin are now the same,
except for image metadata.
This allows for flashing OEM image directly from openwrt
as well as flashing openwrt image directly from OEM.
Make 'loader' partition writable so that it can be updated
during a sysupgrade.
tested with
ENS202EXT v1
EAP1200H
EAP350 v1
EAP600
ECB350 v1
ECB600
ENH202 v1
Signed-off-by: Michael Pratt <mcpratt@pm.me>
While most of the target's contents are split into subtargets, the
base-files are maintained for the target as a whole.
However, OpenWrt already implements a mechanism that will use (and
even prefer) files in the subtargets' directories. This can be
exploited to make several scripts subtarget-specific and thus save
some space (especially helpful for the tiny devices).
The only script remaining in parent base-files is
/etc/hotplug.d/ieee80211/00-wifi-migration, everything else is
moved/split.
Note that this will increase overall code lines, but reduce code
per subtarget.
base-files ipk size reduction:
master (generic) 49135 B
split (generic) 48533 B (- 0.6 kiB)
split (tiny) 43337 B (- 5.7 kiB)
split (nand) 44423 B (- 4.6 kiB)
Tested on TL-WR1043ND v4 (generic) and TL-WR841N v12 (tiny).
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
