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Atmosphere version 1.2.1 releases, supports Switch firmware 13.1.0

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Less than a day after Switch firmware 13.1.0 went live, popular custom firmware Atmosphère has already been updated to support it. The Hekate bootloader also received an update around the same time, so you may want to update that while you're updating Atmosphère. You can find links to these projects' GitHub pages below, as well as the official patch notes for Atmosphère 1.2.1.

:download: Atmosphere Download Page
:arrow: Atmosphere Discussion Thread
:download: Hekate Download Page

1.2.1 is Atmosphère's fifty-eighth official release.

Please be sure to update fusee when upgrading to 1.2.1. fusee-primary no longer exists, and will not work any more.

With thanks to the @switchbrew team, Atmosphère 1.2.1 is bundled with hbl 2.4.1, and hbmenu 3.4.1.

The following was changed since the last release:

  • Support was implemented for 13.1.0.
    • mesosphère was updated to reflect the kernel behavioral changes made in 13.1.0.
      • KScheduler now issues a data memory barrier when unlocking the scheduler lock and when early-returning due to top-thread-is-current during scheduling.
    • erpt was updated to reflect the latest official behaviors.
      • The new service added in 13.0.0 ("sprofile") was revised, and the data formats it expects was changed.
        • This still appears to be (possibly(?)) untestable due to data not being transmitted yet, but I have greater confidence things will go smoothly than I did when 1.1.0 released.
  • A number of improvements were made to mesosphère, including:
    • A build target was created to build targeting the qemu virt board.
      • This facilitates writing unit tests for the kernel (and other atmosphere components) and running them under PC.
        • Please Note: Official system software will not work at all under this, and the Atmosphère project has zero interest in attempting to run official software of any kind. This is unit testing machinery, and explicitly not more than that.
      • This should hopefully allow us to have greater confidence that all of atmosphere's components work the way they're theoretically supposed to in the future.
      • Please Note: If you are a developer who is familiar with the Horizon operating system (or capable of becoming familiar), I would greatly appreciate help writing tests and improving the testing framework.
        • Please contact SciresM#0524 if you are capable and interested.
          • Really, if you are actually a developer who would like to help me get this off the ground, I would deeply appreciate it.
          • That said, if you are not a developer but want to be one, this probably isn't the best opportunity; I expect it to be highly technical.
            • Consider the ReSwitched discord's #hack-n-all channel for your educational purposes.
        • We are (at least for now) using catch2 for unit tests.
    • Almost all virtual calls in the kernel are now resolved statically.
      • This eliminates substantial virtual call overhead, and should lead to improved kernel microperformance in pretty much every function.
    • The remaining red black tree find operations which weren't using the optimized "find key" variant are now using the optimized version.
    • Custom assembly was written to improve tick-to-timespan conversion.
      • This works around gcc emitting suboptimal assembly at -Os (it emits good assembly at -O3, clang is fine at both -O3 and -Os).
    • KThread and KSession structures were updated to optimize member layout, saving 0x10 bytes per KThread/KSession object.
    • Rather than unnecessarily zero-ing all data in kernel objects only to overwrite members later, we now only initialize the members we need to in kernel object constructors.
      • This is what Nintendo was doing already.
    • A set of custom optimized atomic primitives were implemented and are used in place of std::atomic<>
      • This works around a gcc bug which downgrades specified memory order to seq_cst, and introduces clrex in places where it is appropriate.
      • This should strictly improve microperformance of many system calls.
    • An compile-time toggleable extension was added to support 40-bit physical addresses in MapRange capabilities (using currently reserved bits).
    • A number of minor bugs were fixed, including:
      • Initial cache management now better reflects official behavior.
        • This fixes an issue that caused certain hardware with cache sensitivity to produce cryptic kernel panics during boot.
      • Incorrect logic when checking thread priority capabilities was fixed to reflect official behavior.
      • The scheduler was updated to reflect latest official behavior, and a number of minor bugs involving clz/ctz were fixed.
      • Accesses to the processes local region were fixed to properly use kernel linear region, not userland pointers.
      • The cache SVCs exposed for 32-bit processes now better reflect official core mask request semantics.
      • A bug was fixed that could cause a kernel panic if SvcArbitrateLock was called on a thread with exactly one reference in the middle of handling a user-mode exception.
  • General system stability improvements to enhance the user's experience.
For information on the featureset supported by 1.2, please see the official release notes.
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djpannda

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Amtiaz said:
Problem accessing the homebrew menu!!!! The unit fires up with package3, to the desktop of the switch! Upon trying to open the album, Atmosphere kernel panic happens!!!
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I didnt say they worked correctly.. just that its out
 
bootmonster

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bonjorys said:
where can i download the 13.1.0 firmware?
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You can download fine on a banned console, just did it there.
Amtiaz said:
Problem accessing the homebrew menu!!!! The unit fires up with package3, to the desktop of the switch! Upon trying to open the album, Atmosphere kernel panic happens!!!
Click to expand...
Worked fine for me. Make sure you clear out all the old atmosphere folders and start fresh. Make sure you have all the sig patches.

Works fine for me booting with fusee.bin
 
A

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bootmonster said:
You can download fine on a banned console, just did it there.

Worked fine for me. Make sure you clear out all the old atmosphere folders and start fresh. Make sure you have all the sig patches.

Works fine for me booting with fusee.bin
Click to expand...
Buddy, is your unit a Mariko one?? If so, would you be kind enough to wing across your hekate.ipl.ini file which you are using to boot off fusee instead of package3??
 
MasterJ360

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Everything working fine on my end aswell, just had to do an extra step in dumping the 13.1FW from sysnand since my emunand has no prodinfo. A good habit to start from now on since you cant always rely on other sources for FW dumps. Now just waiting for NXthemeInstaller update if we even need one.
 
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Tonton75015

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hello,just update right now,everything works fine but i can't install the n64 and genesis emulator.Godleaf tell that the psfo is non valid,i've tried other nsp ant they installed correctly.
Any ideas?
 

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