From 251ecfe37914919422d74dd32fab15a86f65e879 Mon Sep 17 00:00:00 2001
From: Sebastian Schaper <openwrt@sebastianschaper.net>
Date: Wed, 9 Sep 2020 20:42:53 +0200
Subject: ath79: add support for ZyXEL NWA1121-NI

Specifications:
 * AR9342, 16 MiB Flash, 64 MiB RAM, 802.11n 2T2R, 2.4 GHz
 * 1x Gigabit Ethernet (AR8035), 802.3af PoE

Installation:
* OEM Web UI is at 192.168.1.2
  login as `admin` with password `1234`
* Flash factory-AABJ.bin

The string `AABJ` needs to be present within the file name of the uploaded
image to be accepted by the OEM Web-based updater, the factory image is
named accordingly to save the user from the hassle of manual renaming.

TFTP Recovery:
* Open the case, connect to TTL UART port (this is the official method
  described by Zyxel, the reset button is useless during power-on)
* Extract factory image (.tar.bz2), serve `vmlinux_mi124_f1e.lzma.uImage`
  and `mi124_f1e-jffs2` via tftp at 192.168.1.10
* Interrupt uboot countdown, execute commands
  `run lk`
  `run lf`
  to flash the kernel / filesystem accordingly

MAC addresses as verified by OEM firmware:
use   address   source
LAN   *:cc      mib0 0x30 ('eth0mac'), art 0x1002 (label)
2g    *:cd      mib0 0x4b ('wifi0mac')

Signed-off-by: Sebastian Schaper <openwrt@sebastianschaper.net>
---
 target/linux/ath79/image/generic.mk | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

(limited to 'target/linux/ath79/image/generic.mk')

diff --git a/target/linux/ath79/image/generic.mk b/target/linux/ath79/image/generic.mk
index 4aa6ed6480..9ba5e20e57 100644
--- a/target/linux/ath79/image/generic.mk
+++ b/target/linux/ath79/image/generic.mk
@@ -9,7 +9,7 @@ DEVICE_VARS += ADDPATTERN_ID ADDPATTERN_VERSION
 DEVICE_VARS += SEAMA_SIGNATURE SEAMA_MTDBLOCK
 DEVICE_VARS += KERNEL_INITRAMFS_PREFIX DAP_SIGNATURE
 DEVICE_VARS += EDIMAX_HEADER_MAGIC EDIMAX_HEADER_MODEL
-DEVICE_VARS += OPENMESH_CE_TYPE
+DEVICE_VARS += OPENMESH_CE_TYPE ZYXEL_MODEL_STRING
 
 define Build/add-elecom-factory-initramfs
   $(eval edimax_model=$(word 1,$(1)))
@@ -161,6 +161,13 @@ define Build/wrgg-pad-rootfs
 	$(STAGING_DIR_HOST)/bin/padjffs2 $(IMAGE_ROOTFS) -c 64 >>$@
 endef
 
+define Build/zyxel-tar-bz2
+	mkdir -p $@.tmp
+	mv $@ $@.tmp/$(word 2,$(1))
+	cp $(KDIR)/loader-$(DEVICE_NAME).uImage $@.tmp/$(word 1,$(1)).lzma.uImage
+	$(TAR) -cjf $@ -C $@.tmp .
+	rm -rf $@.tmp
+endef
 
 define Device/seama
   KERNEL := kernel-bin | append-dtb | relocate-kernel | lzma
@@ -2687,6 +2694,28 @@ define Device/zbtlink_zbt-wd323
 endef
 TARGET_DEVICES += zbtlink_zbt-wd323
 
+define Device/zyxel_nwa11xx
+  $(Device/loader-okli-uimage)
+  SOC := ar9342
+  DEVICE_VENDOR := ZyXEL
+  LOADER_FLASH_OFFS := 0x050000
+  KERNEL := kernel-bin | append-dtb | lzma | uImage lzma -M 0x4f4b4c49
+  IMAGE_SIZE := 8192k
+  IMAGES += factory-$$$$(ZYXEL_MODEL_STRING).bin
+  IMAGE/factory-$$$$(ZYXEL_MODEL_STRING).bin := \
+	append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | \
+	pad-rootfs | pad-to 8192k | check-size | zyxel-tar-bz2 \
+	vmlinux_mi124_f1e mi124_f1e-jffs2 | append-md5sum-bin
+endef
+
+define Device/zyxel_nwa1121-ni
+  $(Device/zyxel_nwa11xx)
+  DEVICE_MODEL := NWA1121
+  DEVICE_VARIANT := NI
+  ZYXEL_MODEL_STRING := AABJ
+endef
+TARGET_DEVICES += zyxel_nwa1121-ni
+
 define Device/zyxel_nbg6616
   SOC := qca9557
   DEVICE_VENDOR := ZyXEL
-- 
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