RISC-V: Add cpu_ops and modify default booting method

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Currently, all non-booting harts start booting after the booting hart
updates the per-hart stack pointer. This is done in a way that, it's
difficult to implement any other booting method without breaking the
backward compatibility.

Define a cpu_ops method that allows to introduce other booting methods
in future. Modify the current booting method to be compatible with
cpu_ops.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

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Atish Patra 2020-03-17 18:11:40 -07:00 • committed by Palmer Dabbelt

parent e011995e82

commit 2875fe0561

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5 changed files with 147 additions and 21 deletions

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34

arch/riscv/include/asm/cpu_ops.h

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2

arch/riscv/kernel/Makefile

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38

arch/riscv/kernel/cpu_ops.c

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43

arch/riscv/kernel/cpu_ops_spinwait.c

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51

arch/riscv/kernel/smpboot.c

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