Pull the calibration data from the nvmem subsystem. This allows us to
move userspace caldata extraction into the device-tree definition.
Signed-off-by: Nick Hainke <vincent@systemli.org>
FCC ID: U2M-AN300APIN
Araknis AN-300-AP-I-N is an indoor wireless access point with
1 Gb ethernet port, dual-band wireless,
internal antenna plates, and 802.3at PoE+
this board is a Senao device:
the hardware is equivalent to EnGenius EWS310AP
the software is modified Senao SDK which is based on openwrt and uboot
including image checksum verification at boot time,
and a failsafe image that boots if checksum fails
**Specification:**
- AR9344 SOC MIPS 74kc, 2.4 GHz WMAC, 2x2
- AR9382 WLAN PCI on-board 168c:0030, 5 GHz, 2x2
- AR8035-A PHY RGMII GbE with PoE+ IN
- 40 MHz clock
- 16 MB FLASH MX25L12845EMI-10G
- 2x 64 MB RAM 1839ZFG V59C1512164QFJ25
- UART console J10, populated, RX shorted to ground
- 4 antennas 5 dBi, internal omni-directional plates
- 4 LEDs power, 2G, 5G, wps
- 1 button reset
NOTE: all 4 gpio controlled LEDS are viewed through the same lightguide
therefore, the power LED is off for default state
**MAC addresses:**
MAC address labeled as ETH
Only one Vendor MAC address in flash at art 0x0
eth0 ETH *:7d art 0x0
phy1 2.4G *:7e ---
phy0 5GHz *:7f ---
**Serial Access:**
the RX line on the board for UART is shorted to ground by resistor R176
therefore it must be removed to use the console
but it is not necessary to remove to view boot log
optionally, R175 can be replaced with a solder bridge short
the resistors R175 and R176 are next to the UART RX pin at J10
**Installation:**
Method 1: Firmware upgrade page:
(if you cannot access the APs webpage)
factory reset with the reset button
connect ethernet to a computer
OEM webpage at 192.168.20.253
username and password 'araknis'
make a new password, login again...
Navigate to 'File Management' page from left pane
Click Browse and select the factory.bin image
Upload and verify checksum
Click Continue to confirm
wait about 3 minutes
Method 2: Serial to load Failsafe webpage:
After connecting to serial console and rebooting...
Interrupt uboot with any key pressed rapidly
execute `run failsafe_boot` OR `bootm 0x9fd70000`
wait a minute
connect to ethernet and navigate to
192.168.20.253
Select the factory.bin image and upload
wait about 3 minutes
**Return to OEM:**
Method 1: Serial to load Failsafe webpage (above)
Method 2: delete a checksum from uboot-env
this will make uboot load the failsafe image at next boot
because it will fail the checksum verification of the image
ssh into openwrt and run
`fw_setenv rootfs_checksum 0`
reboot, wait a minute
connect to ethernet and navigate to
192.168.20.253
select OEM firmware image and click upgrade
Method 3: backup mtd partitions before upgrade
**TFTP recovery:**
Requires serial console, reset button does nothing
rename initramfs-kernel.bin to '0101A8C0.img'
make available on TFTP server at 192.168.1.101
power board, interrupt boot with serial console
execute `tftpboot` and `bootm 0x81000000`
NOTE: TFTP may not be reliable due to bugged bootloader
set MTU to 600 and try many times
**Format of OEM firmware image:**
The OEM software is built using SDKs from Senao
which is based on a heavily modified version
of Openwrt Kamikaze or Altitude Adjustment.
One of the many modifications is sysupgrade being performed by a custom script.
Images are verified through successful unpackaging, correct filenames
and size requirements for both kernel and rootfs files, and that they
start with the correct magic numbers (first 2 bytes) for the respective headers.
Newer Senao software requires more checks but their script
includes a way to skip them.
The OEM upgrade script is at
/etc/fwupgrade.sh
OKLI kernel loader is required because the OEM software
expects the kernel to be less than 1536k
and the OEM upgrade procedure would otherwise
overwrite part of the kernel when writing rootfs.
Note on PLL-data cells:
The default PLL register values will not work
because of the external AR8035 switch between
the SOC and the ethernet port.
For QCA955x series, the PLL registers for eth0 and eth1
can be see in the DTSI as 0x28 and 0x48 respectively.
Therefore the PLL registers can be read from uboot
for each link speed after attempting tftpboot
or another network action using that link speed
with `md 0x18050028 1` and `md 0x18050048 1`.
The clock delay required for RGMII can be applied at the PHY side,
using the at803x driver `phy-mode` setting through the DTS.
Therefore, the Ethernet Configuration registers for GMAC0
do not need the bits for RGMII delay on the MAC side.
This is possible due to fixes in at803x driver
since Linux 5.1 and 5.3
Signed-off-by: Michael Pratt <mcpratt@pm.me>
