mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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b7ec64ea16
Starting in 20.0.0, the browser needs more applet memory to function, so we can't steal as much any more.
Thus, we now steal 14 MB on 20.0.0+ instead of 40MB.
However, since this reduces memory available for custom system modules, we are adjusting to compensate.
ams.mitm's heap size has been reduced from 32MB to 12MB (recovering 20MB).
In addition, fs.mitm now uses a new mechanism for stealing memory from the applet pool while romfs is being built.
On net, we are compromising:
* Custom sysmodules lose memory available to them.
On 19.0.0/AMS 1.8.0, there was 30 MB available for custom sysmodules.
Stealing 14 MB instead of 40 MB, we lose 26 MB of that. Reducing ams.mitm's usage will gain us back 20.
Nintendo also appears to...use 4 extra MB, in 20.0.0, from my test homebrew.
So on 20.0.0/AMS 1.9.0, there should be 20 MB available for custom sysmodules.
On the bright side, on <20.0.0/AMS 1.9.0, I guess there will be 50 MB available for custom sysmodules now?
* totk mods will lose the ability to...put every file in the romfs on sd card. There will be some unknown maximum filecount for totk mods.
On the bright side, implementing the transient memory stealing should improve compatibility for some mods which strictly add files?
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| .github/ISSUE_TEMPLATE | ||
| config_templates | ||
| docs | ||
| emummc | ||
| exosphere | ||
| fusee | ||
| img | ||
| libraries | ||
| mesosphere | ||
| stratosphere | ||
| tests | ||
| thermosphere | ||
| troposphere | ||
| utilities | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| atmosphere.mk | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
Atmosphère is a work-in-progress customized firmware for the Nintendo Switch.
Components
Atmosphère consists of multiple components, each of which replaces/modifies a different component of the system:
- Fusée: First-stage Loader, responsible for loading and validating stage 2 (custom TrustZone) plus package2 (Kernel/FIRM sysmodules), and patching them as needed. This replaces all functionality normally in Package1loader/NX Bootloader.
- Exosphère: Customized TrustZone, to run a customized Secure Monitor
- Thermosphère: EL2 EmuNAND support, i.e. backing up and using virtualized/redirected NAND images
- Stratosphère: Custom Sysmodule(s), both Rosalina style to extend the kernel/provide new features, and of the loader reimplementation style to hook important system actions
- Troposphère: Application-level Horizon OS patches, used to implement desirable CFW features
Licensing
This software is licensed under the terms of the GPLv2, with exemptions for specific projects noted below.
You can find a copy of the license in the LICENSE file.
Exemptions:
- Nintendo is exempt from GPLv2 licensing and may (at its option) instead license any source code authored for the Atmosphère project under the Zero-Clause BSD license.
Credits
Atmosphère is currently being developed and maintained by SciresM, TuxSH, hexkyz, and fincs.
In no particular order, we credit the following for their invaluable contributions:
- switchbrew for the libnx project and the extensive documentation, research and tool development pertaining to the Nintendo Switch.
- devkitPro for the devkitA64 toolchain and libnx support.
- ReSwitched Team for additional documentation, research and tool development pertaining to the Nintendo Switch.
- ChaN for the FatFs module.
- Marcus Geelnard for the bcl-1.2.0 library.
- naehrwert and st4rk for the original hekate project and its hwinit code base.
- CTCaer for the continued hekate project's fork and the minerva_tc project.
- m4xw for development of the emuMMC project.
- Riley for suggesting "Atmosphere" as a Horizon OS reimplementation+customization project name.
- hedgeberg for research and hardware testing.
- lioncash for code cleanup and general improvements.
- jaames for designing and providing Atmosphère's graphical resources.
- Everyone who submitted entries for Atmosphère's splash design contest.
- All those who actively contribute to the Atmosphère repository.