info.md

Boot

• Boots from internal flash memory (A-DATA)
• Uses modified GRUB bootloader
• Kernel params
  • Enable the serial console (for debugging)
    • console=tty0
    • console=ttyS0,115200n8
  • Allow it87 modules to load properly
    • acpi_enforce_resources=lax
  • Used by ASUSTOR
    • mem=4G snd_hda_instel.bdl_pos_adj=8

Linux

• Modules
  • /etc/modprobe.d/blacklist-asustor.conf
    • gma500_gfx
  • /etc/modules
    • it87
    • it87_wdt
    • gpio-it87

LEDs

• Mostly it87 GPIOs
  • The it87 chip has two led blink settings, how to access?
    • The qnap-leds could be forked (kernel module)
  • Brightness controlled via FAN PWM (pwm3)
• HDD leds are controlled via the Marvell chip, dunno how to access them

LCD (LCM)

• /dev/ttyS1 (it87 uart)
  • Controls LCD
  • Button events