mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-23 04:12:02 +00:00
23 lines
1.3 KiB
Markdown
23 lines
1.3 KiB
Markdown
|
# Fusée
|
||
|
|
Fusée is a custom bootloader used to start the Atmosphère environment.
|
||
|
|
It is divided into three sub-components: Fusée-primary, Fusée-mtc and Fusée-secondary.
|
||
|
|
|
||
|
|
Fusée is also capable of chainloading other payloads (e.g.: Android).
|
||
|
|
|
||
|
|
Fusée's behavior can be configured via the [BCT.ini](../features/BCT.md) file located on the SD card.
|
||
|
|
|
||
|
|
## Fusée-primary
|
||
|
|
Fusée-primary is the first piece of Atmosphère's code that runs on the hardware.
|
||
|
|
It is distributed as a standalone payload designed to be launched via RCM by abusing the CVE-2018-6242 vulnerability.
|
||
|
|
|
||
|
|
This payload is responsible for all the low-level hardware initialization required by the Nintendo Switch, plus the extra task of initializing the SD card and reading the next Fusée sub-components from it.
|
||
|
|
|
||
|
|
## Fusée-mtc
|
||
|
|
Fusée-mtc is an optional, but heavily recommended sub-component that performs DRAM memory training.
|
||
|
|
This ensures a proper environment for running the final Fusée sub-component.
|
||
|
|
|
||
|
|
## Fusée-secondary
|
||
|
|
Fusée-secondary is the last Fusée sub-component that runs on the system.
|
||
|
|
It is responsible for configuring and bootstrapping the Atmosphère environment by mimicking the Horizon OS's design.
|
||
|
|
This includes setting up the cryptosystem, mounting or emulating the eMMC, injecting or patching system modules and launching the Exosphère component.
|