kumquat-buildroot/board/nezha/readme.txt
Peter Korsgaard acbe6a0a89 configs/nezha_defconfig: new defconfig
Add a defconfig for the Allwinner Nezha, a raspberrypi-style board built
around the RISC-V 64bit D1 SoC.

There is currently no upstream support, so use the git repos from Samuel
Holland as explained on the linux-sunxi wiki:

https://linux-sunxi.org/Allwinner_Nezha

The U-Boot DTB is also used by opensbi, but the two branches are
unfortunately not in sync at the moment, so add a patch to fix the
compatible for the PLIC so opensbi makes it available to S-Mode (Linux).

The use of the sun20i-d1-spl SPL bootloader / TOC1 file format also makes it
a bit more complicated to build the boot image.  As this is expected to only
be a temporary issue, add a U-Boot patch to build the TOC1 image as part of
the build rather than adding explicit support in our U-Boot package to do
it.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2021-11-08 09:45:50 +01:00

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Allwinner Nezha
===============
Nezha is is a low-cost RISC-V 64-bit based platform, powered by an
Allwinner D1 SoC.
How to build
============
$ make nezha_defconfig
$ make
How to write the SD card
========================
Once the build process is finished you will have an image called "sdcard.img"
in the output/images/ directory.
Copy the bootable "sdcard.img" onto an SD card with "dd":
$ sudo dd if=output/images/sdcard.img of=/dev/sdX
Connect a TTL UART to the debug connector, insert the microSD card and
plug in a USB-C cable to the PWR connector to boot the system.