RISC-V: Add basic support for SBI v0.2

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The SBI v0.2 introduces a base extension which is backward compatible
with v0.1. Implement all helper functions and minimum required SBI
calls from v0.2 for now. All other base extension function will be
added later as per need.
As v0.2 calling convention is backward compatible with v0.1, remove
the v0.1 helper functions and just use v0.2 calling convention.

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

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Atish Patra 2020-03-17 18:11:35 -07:00 • committed by Palmer Dabbelt

parent 8446923ae4

commit b9dcd9e415

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3 changed files with 314 additions and 73 deletions

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149

arch/riscv/include/asm/sbi.h

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243

arch/riscv/kernel/sbi.c

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5

arch/riscv/kernel/setup.c

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