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lib: Implement Hart State Management (HSM) SBI extension

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This patch adds support HSM extension. The specification is available
at https://github.com/riscv/riscv-sbi-doc.

It allows to implement hart hotplug and fixed ordered hart booting in
supervisor.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Atish Patra
2020-02-11 17:32:39 -08:00
committed by Anup Patel
parent 5b4824082f
commit e3f69fc1e9
5 changed files with 62 additions and 0 deletions
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3
lib/sbi/sbi_ecall.c
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@@ -136,6 +136,9 @@ int sbi_ecall_init(void)
if (ret)
return ret;
ret = sbi_ecall_register_extension(&ecall_base);
if (ret)
return ret;
ret = sbi_ecall_register_extension(&ecall_hsm);
if (ret)
return ret;
ret = sbi_ecall_register_extension(&ecall_legacy);