From b7a8a5454226f34256c5d76480dda5abb1308395 Mon Sep 17 00:00:00 2001
From: Christopher Hill <ch6574@gmail.com>
Date: Mon, 25 May 2020 21:10:00 -0400
Subject: ath79: add support for MikroTik RouterBOARD 493G (rb4xx series)

This patch adds support for the MikroTik RouterBOARD RB493G, ported
from the ar71xx target.

See https://routerboard.com/RB493G for details

Specification:
- SoC Qualcomm Atheros AR7161
- RAM: 256 MiB
- Storage: 128MiB NAND
- Ethernet: 9x 1000/100/10 Mbps
- USB 1x 2.0 / 1.0 type A
- PCIe: 3x Mini slot
- MicroSD slot

Working:
- Board/system detection
- Ethernet
- SPI
- NAND
- LEDs
- USB
- Sysupgrade

Enabled (but untested due to lack of hardware):
- PCIe - ath79_pci_irq struct has the slot/pin/IRQ mappings if needed

Installation methods:
- tftp boot initramfs image, scp then flash via "sysupgrade -n"
- nand boot existing OpenWrt, scp then flash via "sysupgrade -n"

Notes:
- initramfs image will not work if uncompressed image size over ~8.5Mb
- The "rb4xx" drivers have been enabled

Signed-off-by: Christopher Hill <ch6574@gmail.com>
---
 target/linux/ath79/image/mikrotik.mk | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'target/linux/ath79/image')

diff --git a/target/linux/ath79/image/mikrotik.mk b/target/linux/ath79/image/mikrotik.mk
index a9ff129816..b0bd05a81c 100644
--- a/target/linux/ath79/image/mikrotik.mk
+++ b/target/linux/ath79/image/mikrotik.mk
@@ -1,5 +1,16 @@
 include ./common-mikrotik.mk
 
+define Device/mikrotik_routerboard-493g
+  $(Device/mikrotik)
+  SOC := ar7161
+  DEVICE_MODEL := RouterBOARD 493G
+  IMAGE/sysupgrade.bin = append-kernel | kernel2minor -s 2048 -e -c | \
+	sysupgrade-tar kernel=$$$$@ | append-metadata
+  DEVICE_PACKAGES += kmod-usb-ohci kmod-usb2 nand-utils
+  SUPPORTED_DEVICES += rb-493g
+endef
+TARGET_DEVICES += mikrotik_routerboard-493g
+
 define Device/mikrotik_routerboard-922uags-5hpacd
   $(Device/mikrotik)
   SOC := qca9558
-- 
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