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lightweight sept dox

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Michael Scire 2019-02-20 13:37:40 -08:00
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docs/components/fusee/sept.md Normal file
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# sept
Sept is a payload that facilitates booting Atmosphère when targeting firmware version 7.0.0+.
It consists of a primary and a secondary payload.
## Sept-Primary
Sept-primary is essentially a stand-in for Nintendo's package1ldr, on 7.0.0+. To use it, the caller (normally Fusée-secondary) loads the sept-primary binary to `0x4003F000`,
loads the 7.0.0+ TSEC firmware to `0x40010F00`, and loads a signed, encrypted payload to `0x40016FE0`.
This signed, encrypted payload is normally Sept-secondary.
## Sept-Secondary
Sept-secondary is a payload that performs 7.0.0+ key derivation, and then chainloads to `sept/payload.bin`.
It is normally stored encrypted/signed; if one wishes to build sept-secondary instead of using release builds, one must bring his/her own keys.