ath79: add support for Arduino Yun
authorSungbo Eo <mans0n@gorani.run>
Sun, 12 Jan 2020 12:36:23 +0000 (21:36 +0900)
committerPetr Štetiar <ynezz@true.cz>
Wed, 8 Jul 2020 21:22:30 +0000 (23:22 +0200)
commit358aec77756d6bf850a533272f2685a45220dc0c
tree6d28b534f25267ab28af866abb92ec92b057f3a9
parentdc61e3b7ffdc2e3873af238a9100d44ee685578c
ath79: add support for Arduino Yun

Arduino Yun is a microcontroller development board, based on Atmel
ATmega32u4 and Atheros AR9331.

Specifications:
- MCU: ATmega32U4
- SoC: AR9331
- RAM: DDR2 64MB
- Flash: SPI NOR 16MB
- WiFi:
  - 2.4GHz: SoC internal
- Ethernet: 1x 10/100Mbps
- USB: 1x 2.0
- MicroSD: 1x SDHC

Notes:
- Stock firmware is based on OpenWrt AA.
- The SoC UART can be accessed only through the MCU.
  YunSerialTerminal is recommended for access to serial console.
- Stock firmware uses non-standard 250000 baudrate by default.
- The MCU can be reprogrammed from the SoC with avrdude linuxgpio.

Installation:
1.  Update U-Boot environment variables to adapt to new partition scheme.
    > setenv bootcmd "run addboard; run addtty; run addparts; run addrootfs; bootm 0x9f050000 || bootm 0x9fea0000"
    > setenv mtdparts "spi0.0:256k(u-boot)ro,64k(u-boot-env),15936k(firmware),64k(nvram),64k(art)ro"
    > saveenv
2.  Boot into stock firmware normally and perform sysupgrade with
    sysupgrade image.
    # sysupgrade -n -F /tmp/sysupgrade.bin

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
package/boot/uboot-envtools/files/ath79
target/linux/ath79/dts/ar9331_arduino_yun.dts [new file with mode: 0644]
target/linux/ath79/generic/base-files/etc/board.d/02_network
target/linux/ath79/generic/base-files/etc/uci-defaults/04_led_migration
target/linux/ath79/image/generic.mk
target/linux/ath79/patches-4.19/921-serial-core-add-support-for-boot-console-with-arbitr.patch [new file with mode: 0644]
target/linux/ath79/patches-5.4/921-serial-core-add-support-for-boot-console-with-arbitr.patch [new file with mode: 0644]