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Documentation: Tweak RunningOnRaspberryPi a bit

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Nico Weber 2021-10-16 09:46:17 -04:00 committed by Linus Groh
parent 1e1cd07549
commit ef1d247d79
Notes: sideshowbarker 2024-07-18 02:05:31 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/ef1d247d79d
Pull-request: https://github.com/SerenityOS/serenity/pull/10502
Reviewed-by: https://github.com/linusg
Reviewed-by: https://github.com/mundak
1 changed files with 25 additions and 9 deletions
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34
Documentation/RunningOnRaspberryPi.md
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@ -6,9 +6,11 @@ This is for development purposes only - Serenity doesn't currently boot on Raspe
Currently only UART output is supported, no display.
64-bit only, so you need a Rasperry Pi 3 or newer.
## Running in QEMU
### Step 1: Setup Serenity
### Step 1: Set Up Serenity
Please follow [build instructions](BuildInstructions.md) to download and build Serenity. Make sure everything builds successfully for x86.
@ -30,6 +32,12 @@ Meta/serenity.sh run aarch64
It should build Serenity and open a QEMU window, similar to the x86 version. You should see some messages in the terminal.
You can also run it under gdb with:
```console
Meta/serenity.sh gdb aarch64
```
## Running on real hardware using an SD Card
### Step 0: Download and run Raspberry Pi OS from an SD Card
@ -40,21 +48,29 @@ This step is needed because the original firmware files need to be present on th
Please follow one of the existing guides (for example [here](https://scribles.net/setting-up-serial-communication-between-raspberry-pi-and-pc)) and make sure UART is working on Raspberry Pi OS before proceeding.
### Step 2: Mount SD Card and modify config.txt file on Boot/ partition
### Step 2: Mount SD Card
Add the following lines:
If you use a Raspberry Pi 4, and your serenity kernel is called `kernel8.img`
(the default), and you don't have any other `kernel*.img` files on your SD
card, make sure `config.txt` is empty.
If you want to use filename that isn't `kernel8.img` or if you want to keep
other `kernel*.img` files on your SD card, put this in config.txt:
```
arm_64bit=1
kernel=myfilename.img
```
If you use a Raspberry Pi 3, put this in config.txt:
```
enable_uart=1
arm_64bit=1
# kernel=serenity.img
```
The last line is optional and specifies which kernel to use. You can either replace the default `kernel8.img` file with the Serenity kernel or use a custom file name to be able to easily switch between kernels.
### Step 3: Copy Serenity kernel to SD Card
`kernel8.img` build artifact can be found in `Build/aarch64/Kernel/Prekernel/` directory. Copy it to the main directory on `Boot/` partition, next to the `config.txt` file. You can either replace the original file or use another name (see above).
`kernel8.img` can be found in `Build/aarch64/Kernel/Prekernel/`. Copy it to the main directory on the `Boot/` partition, next to `config.txt`. You can either replace the original file or use another name (see above).
### Step 4: Put the SD Card in the Raspberry Pi and power on
@ -76,7 +92,7 @@ This is enabled by default on Raspberry Pi 3+. For the previous boards please se
This directory will serve as a TFTP server, sending files to the Raspberry Pi when requested.
### Step 2: Set up network interface
### Step 2: Set up the network interface
Switch the network interface to static mode (static IP) and disable the firewall.