1 Commits

Author	SHA1	Message	Date
Michael Pratt	96017a6013	ath79: add support for Senao Engenius EAP1200H ... FCC ID: A8J-EAP1200H Engenius EAP1200H is an indoor wireless access point with 1 Gb ethernet port, dual-band wireless, internal antenna plates, and 802.3at PoE+ **Specification:** - QCA9557 SOC - QCA9882 WLAN PCI card, 5 GHz, 2x2, 26dBm - AR8035-A PHY RGMII GbE with PoE+ IN - 40 MHz clock - 16 MB FLASH MX25L12845EMI-10G - 2x 64 MB RAM NT5TU32M16FG - UART at J10 populated - 4 internal antenna plates (5 dbi, omni-directional) - 5 LEDs, 1 button (power, eth0, 2G, 5G, WPS) (reset) **MAC addresses:** MAC addresses are labeled as ETH, 2.4G, and 5GHz Only one Vendor MAC address in flash eth0 ETH *:a2 art 0x0 phy1 2.4G *:a3 --- phy0 5GHz *:a4 --- **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:** 2 ways to flash factory.bin from OEM: Method 1: Firmware upgrade page: OEM webpage at 192.168.1.1 username and password "admin" Navigate to "Firmware Upgrade" page from left pane Click Browse and select the factory.bin image Upload and verify checksum Click Continue to confirm and wait 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 "192.168.1.1/index.htm" Select the factory.bin image and upload wait about 3 minutes **Return to OEM:** If you have a serial cable, see Serial Failsafe instructions otherwise, uboot-env can be used to make uboot load the failsafe image *DISCLAIMER* The Failsafe image is unique to Engenius boards. If the failsafe image is missing or damaged this will brick the device DO NOT downgrade to ar71xx this way, it can cause kernel loop or halt ssh into openwrt and run `fw_setenv rootfs_checksum 0` reboot, wait 3 minutes connect to ethernet and navigate to 192.168.1.1/index.htm select OEM firmware image from Engenius and click upgrade **TFTP recovery:** Requires serial console, reset button does nothing rename initramfs to 'vmlinux-art-ramdisk' make available on TFTP server at 192.168.1.101 power board, interrupt boot execute tftpboot and bootm 0x81000000 NOTE: TFTP is not reliable due to bugged bootloader set MTU to 600 and try many times **Format of OEM firmware image:** The OEM software of EAP1200H is a heavily modified version of Openwrt Kamikaze. One of the many modifications is to the sysupgrade program. Image verification is performed simply by the successful ungzip and untar of the supplied file and name check and header verification of the resulting contents. To form a factory.bin that is accepted by OEM Openwrt build, the kernel and rootfs must have specific names... openwrt-ar71xx-generic-eap1200h-uImage-lzma.bin openwrt-ar71xx-generic-eap1200h-root.squashfs and begin with the respective headers (uImage, squashfs). Then the files must be tarballed and gzipped. The resulting binary is actually a tar.gz file in disguise. This can be verified by using binwalk on the OEM firmware images, ungzipping then untaring. Newer EnGenius software requires more checks but their script includes a way to skip them, otherwise the tar must include a text file with the version and md5sums in a deprecated format. The OEM upgrade script is at /etc/fwupgrade.sh. OKLI kernel loader is required because the OEM software expects the kernel to be no greater than 1536k and the factory.bin 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`. Therefore the PLL registers for GMAC0 do not need the bits for 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>	2021-01-23 12:53:22 +01:00