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chapter3: raise RISC-V SBI requirement#147

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xypron wants to merge 1 commit intoARM-software:mainfrom
xypron:sbi
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chapter3: raise RISC-V SBI requirement#147
xypron wants to merge 1 commit intoARM-software:mainfrom
xypron:sbi

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@xypron xypron commented Aug 27, 2025

v0.2 of the RISC-V Supervisor Binary Interface Specification was a draft. We should require conformance with a ratified document.

The System Reset Extension (SRST) is needed to implement system reset and poweroff.

The Debug Console Extension (DBCN) is needed to implement an early debug console before drivers are initialized.

v0.2 of the RISC-V Supervisor Binary Interface Specification was a draft.
We should require conformance with a ratified document.

The System Reset Extension (SRST) is needed to implement system reset and
poweroff.

The Debug Console Extension (DBCN) is needed to implement an early debug
console before drivers are initialized.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
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xypron commented Aug 27, 2025

@atishp04, @avpatel, please, review.

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xypron commented Sep 10, 2025

Base Extension
This extension is needed to discover the availability of other extensions.

HART State Management Extension (HSM)
This extension is needed to wake up the other harts in an SMP system.

System Reset Extension (SRST)
This extension implements system reboot and poweroff.

Debug Console Extension (DBCN)
This extension is used to write to the serial console before firmware drivers are available.

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vstehle commented Sep 10, 2025

Approved for merge during the call of Sep 10.

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vstehle commented Sep 10, 2025

This is pushed now.

@vstehle vstehle closed this Sep 10, 2025
@xypron xypron deleted the sbi branch January 28, 2026 21:34
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