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UEFI for Rockchip RK356X based Single Board Computers

This repository contains a port of Tianocore EDK II to various Rockchip RK356x based boards:

Building an SD card / eMMC image

If you want to build the image, checkout the repository and run: $ make sdcard

Prebuild images are also provided for stable ports and are available in the release section.

Note: The ROCK3 Compute Module port is still work in progress: as such no prebuild images are released for those boards.

Installing

In order to have the board booting in UEFI, the firmware has to be located in one of the supported boot devices. If the device (SD card, eMMC) are removable, the easiest way is to use dd, Etcher, etc. to write the appropriate .img file to the device.

Board specific installation guides

Running

Connect a serial console to UART2 using settings 115200 8n1.

Operating system support

OS Version Supported hardware Notes
ESXi-Arm 1.12 HDMI, USB2, USB3, serial, PCIe, ethernet
Fedora 38 HDMI, USB2, USB3, serial, PCIe, thermal sensors Needs irqchip.gicv3_nolpi=1 for MSI support
FreeBSD 14.0-CURRENT ? Mangled serial output, boot stuck waiting for random seed
NetBSD 9.99.x HDMI, USB2, USB3, serial, SD card, PCIe, eMMC, SATA, ethernet, thermal sensors, watchdog
OpenBSD 7.0-current HDMI, USB2, USB3, serial To use HDMI console, enter set tty fb0 at the bootloader prompt.
Ubuntu 21.04 HDMI, USB2, USB3, serial, PCIe, thermal sensors Needs irqchip.gicv3_nolpi=1 for MSI support
Windows PE ? HDMI, USB3, PCIe BSOD when plugging device in to USB2 port (#2)

eMMC controller Device-Specific Method (_DSM)

The divider register in the RK356x's SDHCI controller does not work, so to change the eMMC card clock we have to do it through the CRU. This is exposed to the OS as an ACPI Device-Specific Method (_DSM).

Function 1: Set Card Clock

The _DSM control method parameters for the Set Card Clock function are as follows:

Arguments

  • Arg0: UUID = 434addb0-8ff3-49d5-a724-95844b79ad1f
  • Arg1: Revision = 0
  • Arg2: Function Index = 1
  • Arg3: Target card clock rate in Hz.

Return

The actual card clock rate in Hz. Will be less than or equal to the target clock rate. Returns 0 if the target clock rate could not be set.