mirror of
https://github.com/samueldr/wip-pinebook-pro.git
synced 2025-01-08 09:59:47 +01:00
Update README
This commit is contained in:
Samuel Dionne-Riel
parent
fb057b9eca
commit
5e4197f560
1 changed files with 53 additions and 47 deletions
100
README.md
100
README.md
|
|
@ -15,46 +15,51 @@ Clone this repository somwhere, and in your configuration.nix
|
|||
That entry point will try to stay unopinionated, while maximizing the hardware
|
||||
compatibility.
|
||||
|
||||
## Compatibility
|
||||
|
||||
### Tested
|
||||
## Current state
|
||||
|
||||
* X11 with modesetting
|
||||
* Wi-Fi
|
||||
* Brightness controls
|
||||
* Speaker output
|
||||
*A whole lot of untested*.
|
||||
|
||||
### Untested
|
||||
You can look at the previous state to see that the basic stuff works. But I
|
||||
find listing everything as working is hard.
|
||||
|
||||
* Bluetooth
|
||||
What's untested and not working will be listed here at some point. Maybe.
|
||||
|
||||
### Known issues
|
||||
|
||||
* Suspend (or resume) fails.
|
||||
#### `rockchipdrm` and `efifb`
|
||||
|
||||
### Tips
|
||||
`CONFIG_FB_EFI` has been disabled in the customized kernel as `rockchipdrm`
|
||||
will not render the VT if `efifb` is present.
|
||||
|
||||
Be careful if using the mainline kernel instead, as it will have
|
||||
`CONFIG_FB_EFI` set to `y`.
|
||||
|
||||
#### *EFI* and poweroff
|
||||
|
||||
When booted using EFI, the system will not power off. It will stay seemingly
|
||||
stuck with the LED and display turned off.
|
||||
|
||||
Power it off by holding the power button for a while (10-15 seconds).
|
||||
|
||||
Otherwise you might have a surprise and find the battery is flat!
|
||||
|
||||
The backlight can be controlled using `light` (`programs.light.enable`).
|
||||
|
||||
## Image build
|
||||
|
||||
> **NOTE**: These images will be built without an *Initial Boot Firmware*.
|
||||
|
||||
### SD image
|
||||
|
||||
```
|
||||
$ ./build.sh
|
||||
$ lsblk /dev/mmcblk0 && sudo dd if=$(echo result/sd-image/*.img) of=/dev/mmcblk0 bs=8M oflag=direct status=progress
|
||||
$ nix-build -A sdImage
|
||||
```
|
||||
|
||||
The `build.sh` script transmits parameters to `nix-build`, so e.g. `-j0` can
|
||||
be used.
|
||||
### ISO image
|
||||
|
||||
Once built, this image is self-sufficient, meaning that it should already be
|
||||
booting, no need burn u-boot to it.
|
||||
|
||||
The required modules (and maybe a bit more) are present in stage-1 so the
|
||||
display should start early enough in the boot process.
|
||||
|
||||
The LED should start up with the amber colour ASAP with this u-boot
|
||||
configuration, as a way to show activity early. The kernel should set it to
|
||||
green as soon as it can.
|
||||
```
|
||||
$ nix-build -A isoImage
|
||||
```
|
||||
|
||||
## Note about cross-compilation
|
||||
|
||||
|
|
@ -64,41 +69,42 @@ When cross-compiled, all caveats apply. Here this mainly means that the kernel
|
|||
will need to be re-compiled on the device on the first nixos-rebuild switch,
|
||||
while most other packages can be fetched from the cache.
|
||||
|
||||
## `u-boot`
|
||||
|
||||
Assuming `/dev/mmcblk0` is an SD card.
|
||||
For cross-compilation, you might have to provide a path to a known-good Nixpkgs
|
||||
checkout. *(Left as an exercis to the reader.)*
|
||||
|
||||
```
|
||||
$ nix-build -A pkgs.uBootPinebookPro
|
||||
$ lsblk /dev/mmcblk0 && sudo dd if=result/idbloader.img of=/dev/mmcblk0 bs=512 seek=64 oflag=direct,sync && sudo dd if=result/u-boot.itb of=/dev/mmcblk0 bs=512 seek=16384 oflag=direct,sync
|
||||
$ NIX_PATH=nixpkgs=/path/to/known/working/cross-compilation-friendly/nixpkgs
|
||||
```
|
||||
|
||||
The eMMC has to be zeroed (in the relevant sectors) or else the RK3399 will use
|
||||
the eMMC as a boot device first.
|
||||
## *Initial Boot Firmware*
|
||||
|
||||
Alternatively, this u-boot can be installed to the eMMC.
|
||||
> **NOTE**: The previously available customized *U-Boot* from this repository
|
||||
> are not available anymore.
|
||||
|
||||
Installing to SPI has yet to be investigated.
|
||||
### *Tow-Boot*
|
||||
|
||||
### Updating eMMC u-boot from NixOS
|
||||
I highly suggest installing *Tow-Boot* to the SPI Flash.
|
||||
|
||||
**Caution:** this could render your system unbootable. Do this when you are in
|
||||
a situation where you can debug and fix the system if this happens. With this
|
||||
said, it should be safe enough.
|
||||
- https://github.com/Tow-Boot/Tow-Boot
|
||||
|
||||
Having the firmware installed to SPI makes the device act basically like a
|
||||
normal computer. No need for weird incantations to setup the initial boot
|
||||
firmware.
|
||||
|
||||
Alternatively, starting from the *Tow-Boot* disk image on eMMC is easier to
|
||||
deal with and understand than having to deal with *U-Boot* manually.
|
||||
|
||||
|
||||
### Mainline *U-Boot*
|
||||
|
||||
Mainline U-Boot has full support for graphics since 2021.04. The current
|
||||
unstable relases of Nixpkgs are at 2021.04 at least.
|
||||
|
||||
```
|
||||
$ nix-build -A pkgs.uBootPinebookPro
|
||||
$ lsblk /dev/disk/by-path/platform-fe330000.sdhci && sudo dd if=result/idbloader.img of=/dev/disk/by-path/platform-fe330000.sdhci bs=512 seek=64 oflag=direct,sync && sudo dd if=result/u-boot.itb of=/dev/disk/by-path/platform-fe330000.sdhci bs=512 seek=16384 oflag=direct,sync
|
||||
$ nix-build -A pkgs.ubootPinebookPro
|
||||
```
|
||||
|
||||
### Alternative boot order
|
||||
|
||||
If you rather USB and SD card is tried before the eMMC, `pkgs.uBootPinebookProExternalFirst`
|
||||
can be installed, which has an alternative patch set added on top that will
|
||||
change the boot order.
|
||||
|
||||
The SD image is built using the "alternative boot order" u-boot. Thus, flashing
|
||||
the image to your eMMC keeps external devices bootable.
|
||||
Note that the default U-Boot build does not do anything with LED on startup.
|
||||
|
||||
|
||||
## Keyboard firmware
|
||||
|
|
|
|||
Loading…
Reference in a new issue