Diffusion FreeBSD src repository - subversion rS348649

MFC r347514:
rS348649
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Description

MFC r347514:

Add support for HiFive Unleashed -- the board with a multi-core RISC-V SoC
from SiFive, Inc.

The first core on this SoC (hart 0) is a 64-bit microcontroller.

o Pick a hart to run boot process using hart lottery.

This allows to exclude hart 0 from running the boot process.
(BBL releases hart 0 after the main harts, so it never wins the lottery).

o Renumber CPUs early on boot.

Exclude non-MMU cores. Store the original hart ID in struct pcpu. This
allows to find out the correct destination for IPIs and remote sfence
calls.

Thanks to SiFive, Inc for the board provided.

Details

Provenance

br	Authored on

Parents

rS348648: MFC r340028 (by jhb):

Branches

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Event Timeline

br committed rS348649: MFC r347514:.Jun 4 2019, 5:39 PM

Changes (6)

Path

Size

stable/

12/

sys/

riscv/

include/

riscv/

rS348649

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stable/12/sys/riscv/include/pcpu.h

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stable/12/sys/riscv/riscv/intr_machdep.c

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stable/12/sys/riscv/riscv/locore.S

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stable/12/sys/riscv/riscv/machdep.c

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stable/12/sys/riscv/riscv/mp_machdep.c

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stable/12/sys/riscv/riscv/pmap.c

MFC r347514:rS348649Actions

Description

Details

Event Timeline

Changes (6)

rS348649

stable/12/sys/riscv/include/pcpu.h

stable/12/sys/riscv/riscv/intr_machdep.c

stable/12/sys/riscv/riscv/locore.S

stable/12/sys/riscv/riscv/machdep.c

stable/12/sys/riscv/riscv/mp_machdep.c

stable/12/sys/riscv/riscv/pmap.c

MFC r347514:
rS348649
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